Minolta Di620 Manual Download Page 393

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D-82

3-8. ELECTRICAL/IMAGE ADJUSTMENT
1) Touch Panel Adj.

Adjustment Procedure

1. Call the Tech. Rep. mode to the screen.
2. Touch [Tech. Rep. Choice] and [System Set], in that order.
3. Touch [Touch Panel Adj.].

6. Touch [End]. Then, touch [Menu] to recall the Tech. Rep. mode to the screen.

Be sure to perform the Touch Panel Adj. after the following items have been done.
1) Memory Clear
2) Control Panel replacement

When is this adjustment required?

4. Touch the four crosses (+) on the screen in sequence.

These crosses may be touched in any order; but be sure to
touch the center of each cross.

NOTE

1155D191CA

5. The cross touched changes into a grid marker (consisting

of a square with a cross superimposed) and the
adjustment is completed when [END] is touched.

1155D192CA

Summary of Contents for Di620

Page 1: ...Di 620 GENERAL MECHANICAL ELECTRICAL ...

Page 2: ...4 6 1 Drum Drive Mechanism M 14 6 2 Grounding of the PC Drum M 15 7 DRUM CHARGING M 16 7 1 PC Drum Charge Corona Comb Electrode Cleaning Mechanism M 17 7 2 Ozone Filter M 19 8 IR SECTION M 20 8 1 Exposure Section Structure and Operation M 21 8 2 Exposure Lamp ON OFF Control M 22 8 3 IR Image Processing System M 24 8 4 Image Density Control M 26 8 5 Detecting of Original M 32 8 6 Drive Mechanism fo...

Page 3: ...ION M 65 12 1 Drawer in Position Detection M 66 12 2 Paper Empty Detection M 67 12 3 Paper Lifting Lowering Mechanism M 69 12 4 Paper Stack Lowering Drawer Locking Mechanism Inch Area M 72 12 5 Paper Level Detecting M 73 12 6 Universal Tray 2nd Drawer Paper Size Detection M 74 12 7 3rd Drawer in Position Detection M 76 12 8 3rd Drawer Paper Empty Detection M 77 12 9 Main Tray Paper Stack Lifting L...

Page 4: ...echanism M 108 15 3 PC Drum Paper Separator Fingers Moving Mechanism M 109 16 MAIN ERASE LAMP M 112 17 TRANSPORT SECTION M 113 18 FUSING UNIT M 114 18 1 Drive for the Fusing Unit M 115 18 2 Fusing Rollers Pressure Mechanism M 116 18 3 Oil Application Mechanism M 116 18 4 Cleaning Web Take Up Mechanism M 117 18 5 Fusing Temperature Control M 118 18 6 CPM Control M 120 19 EXIT DUPLEX SWITCHING SECTI...

Page 5: ...1151SBG000CA GENERAL ...

Page 6: ...ntation For United States Users Laser Safety This copy machine is certified as a Class 1 Laser product under the U S Department of Health and Human Services DHHS Radiation Performance Standard according to the Radiation Control for Health and Safety Act of 1968 This means that the copy machine does not produce hazardous laser radiation CDRH Regulations The Center for Devices and Radiological Healt...

Page 7: ... 1 laser produkt der opfylder lEC825 sikkerheds kravene VAROlTUS Laitteen Käyttäminen muulla kuin tässä käyttöohjeessa mainitulla tavalla saattaa altistaa käyttäjän turvallisuusluokan 1 ylittävälle näkymättömälIe lasersäteiylle VARNING Om apparaten används på annat sätt än i denna bruksanvisning specificerats kan användaren utsättas för osynlig laserstrålning som överskrider gränsen för laser klas...

Page 8: ...G 3 Laser Safety Labels Laser safety labels are attached to the outside of the copy machine as shown below 1155O653AA 1155O698CB 1155O699EA For Europe For United States ...

Page 9: ...G 4 Label inside copy machine The following laser safety label will be attached inside the copy machine as shown below 1155G002AA ...

Page 10: ...g Udskiftning må kun ske med batteri af samme fabrikat og type Levér det brugte batteri tilbage til leverandøren Norway only ADVARSEL Eksplosjonsfare ved feilaktig skifte av batteri Benytt samme batteritype eller en tilsvarende type anbefalt av apparatfabrikanten Brukte batterier kasseres i henhold til fabrikantens instruksjoner Sweden only VARNING Explosionsfara vid felaktigt batteribyte Använd s...

Page 11: ...commended by the manufacturer Dispose of used IC Package according to the manufacturer s instruction Germany only VORSICHT Austausch nur durch denselben oder einen vom Hersteller empfohlenen gleichwertigen Typ Entsorgung gebrauchter Batterien nach Angaben des Herstellers ...

Page 12: ... New Micro Toning System CHARGING SYSTEM Comb Electrode DC Negative Corona with Scorotron System IMAGE TRANSFER Visible Image Transfer by means of a Single Wire DC SYSTEM Negative Corona with Corotron System PAPER SEPARATING Single Wire AC Corona with Corotron System plus SYSTEM Paper Separator Finger FUSING SYSTEM Heat Roller PAPER DISCHARGING Charge Neutralizing Brush SYSTEM MAXIMUM ORIGINAL Met...

Page 13: ...OWER CURRENT CONSUMPTION Copier Only POWER 115 V 120 V 127 V 220 240 V 50 60 Hz REQUIREMENTS Area Zoom Ratio Size 1 000 Area Zoom Ratio Size 1 000 Metric A3L A4L A4C B4L 35 47 62 40 Inch 11 17 L 8 1 2 11 L 8 1 2 11 C 8 1 2 14 L 35 48 62 41 Fixed Area Mode Metric Inch Full Size 1 000 1 000 Reduction 0 816 0 707 0 500 0 785 0 733 0 647 0 500 Enlargement 1 154 1 414 2 000 1 214 1 294 1 545 2 000 Vari...

Page 14: ...t 980 mm 38 1 2 WEIGHT 200 kg 441lbs Copier Only excluding the Copy Tray starter toner and paper Temperature 10 to 32 C with a fluctuation of 10 C or less per hour Humidity 15 to 85 RH with a fluctuation of 10 RH or less per hour Ambient Illumination 3 000 lux or less Levelness 1 1 75 mm 100 mm ...

Page 15: ...is sourced from the same power outlet make sure that the capacity of the outlet is not exceeded Use a power source with little voltage fluctuation Never connect by means of a multiple socket any other appliances or machines to the outlet being used for the copier Make the following checks at frequent intervals Is the power plug abnormally hot Are there any cracks or scrapes in the cord Has the pow...

Page 16: ...e power cord into the outlet When unplugging the power cord do not pull on the cord hold the plug and pull it out Do not bring any magnetized object near the copier Do not place a vase or vessel containing water on the copier Be sure to turn OFF the Power Switch at the end of the workday or upon power failure Use care not to drop paper clips staples or other small pieces of metal into the copier O...

Page 17: ...with toner wash them with soap and water immedi ately Do not throw away any used consumables PC Drum starter toner etc They are to be collected NOTE Do not burn bury in the ground or throw into the water any consumables PC Drum starter toner etc 1155SBG0600A The Printerhead of this copier uses a laser diode that emits a laser beam Use the following precautions when performing service jobs at the u...

Page 18: ...lug In Counter 3 Electronic Document Handler EDH 1 4 Data Controller D 102 5 Large Capacity Cassette C 304 6 Finisher FN 3 7 16MB Memory 8 Hard Disk Drive Kit 1145M035AA 1 2 4 1138O525AA 8 4487U043AA 7 4487U025AA 3 5 6 1155O013DA 7 SYSTEM OPTIONS ...

Page 19: ...1155SAM000CA MACHANICAL ELECTRICAL ...

Page 20: ...BM0100A 2 3 4 5 6 7 8 9 10 11 12 13 14 1 36 35 34 D 33 32 31 E 30 29 28 F 27 G 26 15 B 16 A 17 K L 18 19 M N 20 21 O P 22 25 24 23 1155G001AA 37 38 39 40 41 42 49 44 45 46 47 48 43 H I C J 1 CROSS SECTIONAL VIEW ...

Page 21: ... Transport Roller 36 Upper Fusing Roller Separator Finger 37 Upper Fusing Roller Heater Lamp H1 38 Upper Fusing Roller 39 Suction Unit 40 Cleaning Blade 41 Lower Fusing Roller 42 Lower Fusing Roller Heater Lamp H2 43 PC Drum Separator Finger 44 Duplex Unit Horizontal Transport Roller 2 45 Transfer Separator Charger 46 Timing Roller 47 Duplex Roller 1 48 Duplex Roller 2 49 Duplex Unit Horizontal Tr...

Page 22: ...electrical signal that controls the output level from the laser diode LD 5 Laser Exposure The laser beam emitted from the LD strikes the surface of the PC drum creating a latent electrostatic image 6 PC Drum The drum is an aluminum cylinder coated with photosensitive material The action of the laser generates an electrostatic pattern latent image onto the drum surface 7 Drum Charging A scorotron c...

Page 23: ...ge 15 Transport The suction belt moves the sheet to the fusing section 16 Fusing Heat and pressure supplied by the upper and lower fusing rollers cause the toner to fuse to the sheet 17 Upper Paper Exit Switch The switching mechanism determines whether the sheet is ejected to the copy tray or transported to the turnover section 18 Turnover This section flips the sheet and directs it onward The she...

Page 24: ...23 Drives the Transport Roller and Manual Feed Roller 6 Transport Roller Coupling Gears 7 Manual Feed Paper Take Up Clutch CL1 F Vertical Transport Motor M22 Drives the Vertical Transport Rollers and the Duplex Unit Hor izontal Transport Rollers 3 4 8 Duplex Unit Horizontal Transport Roller Coupling Gears 2 9 Vertical Transport Roller Drive Gears G Paper Take Up Motor M21 Drives the Take Up Roller...

Page 25: ...d trip ON Scanner Motor M31 Check of clamps gain light level adjustment original size detection filter Cycle ON OFF to adjust temperature Power cord is plugged into power outlet A Power source outputs stabilized DC24V power supply to the dehumidifying heaters LCC Tray ON Note Only if the Paper Dehumidifying Switch S8 is ON Power Switch is turned ON B DC Voltage output Control panel display Note Th...

Page 26: ... Size Detection Moves to leading edge of original When START key is turned ON IR Section D Exposure Lamp FL1 IR Cooling Fan Motor M33 ON M31 Executes Gain Shading adjustment Scanner Motor M31 Moves under shading sheet ON SL7 OFF Starts M31 scan ON Scanner Reference Position Sensor PC55 Blocked Stops M31 L Shading signal L H FL1 OFF M33 OFF ON ON ON ON After completion Gain Shading adjustment E ...

Page 27: ... Fan Motor M13 After reading AIDC pattern Approx 110ms OFF Grid output Approx 750ms Developing Unit Drive Motor M1 ON Full speed F When START key is turned ON Printer Section ON Approx 50ms Developer bias PC Drum Drive Motor M2 ON Suction Fan Motor M14 ON ON Paper Take Up Motor M21 Approx 75ms CL3 OFF PH Cooling Fan Motor M19 ON Vertical Transport Motor M22 ON Transport Motor M23 ON Approx 500ms 1...

Page 28: ...1225ms Exit Duplex Switching Solenoid SL3 ON When sheet clears Transport Roller Sensor PC1 H H Vertical Transport Motor M22 OFF Approx 131ms Transport Motor M23 OFF When sheet clears Paper Leading Edge Sensor PC2 H I Approx 1550ms Exit Duplex Switching Solenoid SL3 OFF Approx 62 5ms Synchronizing Motor M5 OFF When sheet clears Turnover Feed Entry Sensor PC11 H J Approx 300ms Reverse the direction ...

Page 29: ...harger OFF When VD signal to PWB A Master Board changes from to L H L Approx 160ms Developing Unit Drive Motor M1 OFF Approx 920ms OFF PC Drum Charger OFF Power Supply Unit Cooling Fan Motors 2 3 M16 M18 OFF PC Drum Drive Motor M2 Main Erase Lamp LA1 OFF OFF PH Cooling Fan Motor M19 Suction Fan Motor M14 Ozone Ventilation Fan Motor M12 Toner Suction Fan Motor M13 Half speed OFF Power Supply Unit C...

Page 30: ...h morning Correct for ID drop caused by low drum sensitivity when copier is first power switch is turned ON before copier is fully warmed up AIDC sensor contamination use V control to correct the grid voltage Vg and developer bias Vb Correction After Pro longed Non Use Correct for ID change caused by change in drum sensitivity due to non usage for at least two hours in the standby state When START...

Page 31: ...ation 1 The LED projects approx 950 nm infrared light onto the surface of the PC Drum 2 The phototransistor detects the amount of light reflected back 3 The phototransistor outputs a voltage corresponding to the intensity of the light reflected back Toner Density on PC Drum Light reflected Output Voltage High Small High Low Large Low Image Transfer Paper Separator Coronas PC Drum AIDC Sensor UN6 O...

Page 32: ... or other material will cause a drop in the sensor output voltage This must be corrected for if the AIDC sensor is to continue providing reliable reference values To make the adjustment the drum surface is erased and an AIDC pattern is generated on it LED current is then adjusted to bring the AIDC sensor output voltage to 1V 3 V Control Drum deterioration and environmental factors may lead to a dr...

Page 33: ...oss of optical sensitivity If the drum is removed from the unit it should be wrapped in a soft clean cloth or other protective covering to prevent lengthy exposure to ambient light 1155SBM0601A 6 1 Drum Drive Mechanism The drum is driven by the PC Drum Drive Motor A flywheel mounted to the drum shaft helps to maintain smooth rotation CONTROLLED PART CONTROL SIGNAL ON OFF WIRING DIAGRAM M2 PJ7A 2A ...

Page 34: ...the rear end When the PC Unit is slid into the copier the Drum Holding Shaft contacts the ground point This provides for assured grounding of the PC Drum through the Ground Plate in the rear to the frame of the copier Ground Plate Drum Holding Shaft Ground Point Drive Gear 1155M034AA ...

Page 35: ...wire type chargers produce circular coronas that can generate significant ozone on all sides the comb electrode charger concentrates the discharge onto the grid mesh thereby reducing ozone generation CONTROL SIGNAL ON OFF WIRING DIAGRAM HV1 PC Drum Charger PJ9A 2A L H F G 8 9 INITIAL VALUE 614V CONTROL SIGNAL WIRING DIAGRAM Grid Voltage VG PJ9A 12A F 8 NOTE Will vary in accordance with image stabi...

Page 36: ...s on copies and charge leak Mechanism When PC Drum Charge Comb Cleaning Motor M7 is energized its drive is trans mitted to the Screw Shaft This in turn moves the Cleaner mounted on the Screw Shaft Drum Comb Cleaner Home Position Sensor PC16 detects the Cleaner at its home position which is the reference position for its cleaning motion The Cleaner makes one round trip per each cleaning cycle to cl...

Page 37: ...urned ON 2 The number of copies made exceeds 10K after S1 has been turned ON and 10 minutes elapse after the last copy cycle has been completed 3 A PC Drum Charge Corona malfunction which has been detected is reset 4 A misfeed malfunction which has been detected is reset with a sheet of paper remaining at the area near the Image Transfer Paper Separator Corona CONTROL SIGNAL FORWARD BACKWARD WIRIN...

Page 38: ...s absorbed by the Ozone Filter as the air is drawn out of the copier by Ozone Ventilation Fan Motor CONTROL SIGNAL ON OFF WIRING DIAGRAM M12 PJ10A 7B L H B 10 M17 PJ10A 6B L H A 10 1155M005AA PC Drum Charger Ozone Filter PC Drum Cooling Fan Motor M17 Ozone Ventilation Fan Motor M12 ...

Page 39: ...signal is then converted into a digital image signal The digital image signal passes through correction processing and the result is output to the MSC board 1 2 3 4 5 6 7 8 9 10 1155M006AA 1 Scanner Motor M31 2 Scanner Drive Cable 3 Scanner Reference Position Sensor PC55 4 Exposure Lamp Inverter Board UN10 5 Digital Image Processing Board PWB IB 6 CCD Analog Image Processing Board PWB IA 7 Lens 8 ...

Page 40: ...s so that the copy for these areas is generally too dark The Auxiliary Reflector reduces the problem by reflect ing light from the Exposure Lamp onto the original 2 Exposure Lamp Heater This heater warms up the exposure lamp reducing the system s warmup time 3 Exposure Lamp Fluorescent lamp used to illuminate the original 4 Mirror 1 Directs the reflected light from the original over to Mirror 2 1 ...

Page 41: ...orrect for fluctuations in output voltage caused by environmen tal changes and by performance disparities among components Exposure Lamp ON Timing Power Switch turns ON the Exposure Lamp remote signal goes causing the Exposure Lamp to come ON The Exposure Lamp intensity remains at 100 adjustment during that the Expo sure Lamp is ON and is then readjusted Exposure Lamp OFF Timing The Exposure Lamp ...

Page 42: ...p to go OFF when the subscan area signal from the Digital Image Processing Board changes from to Under EDH 1 single feed mode the Exposure Lamp goes off the Subscan Area signal changes from to Under book mode the Exposure Lamp goes off the Subscan Area signal changes from to CONTROL SIGNAL ON OFF WIRING DIAGRAM Subscan Area Signal VD PJ3B 27 H 18 L H L H L H L H L H Manual placement of original ED...

Page 43: ...e processing 1 Photoelectric Conversion CCD Sensor PWB IA 6 Image Monitor PWB IB 2 Analog Processing PWB IA 3 ODD EVEN Synthesis PWB IB 4 Shading Correction PWB IB 5 Histogram Processing PWB IB 7 Magnification Processing PWB IB 8 MTF Correction PWB IB 9 IR Density Correction PWB IB 10 Octal to Binary Converter PWB IB 11 S P Conversion PWB IB Memory PWB B PH PWB J L ...

Page 44: ...age density data that is in linear propor tional to the density of the original image 5 Histogram Processing PWB IB Generates a histogram of the image data for use during EE gain adjustment 6 Image Monitor PWB IB Monitors the image data Used for detecting the size of the original 7 Magnification Processing PWB IB Adjusts the image in accordance with the feature setting Enlarge Reduce made at the c...

Page 45: ...analog PPC the AE control method holds the intensity of the exposure lamp constant and determines the characteristics of the original by means of sample data obtained through realtime scanning The IR Density Cor rection Processing section then removes the background components that are below the threshold Setting of the Density Level The user can select from three levels Light Normal or Dark by Us...

Page 46: ...resents the density of the original s background For a two tone B W image such as a word processor document where the back ground is white the peak would appear all the way to the right as shown by the dotted line in the above illustration For a newspaper which is character ized by a somewhat darker background the peak would appear at about the position shown by the solid line in the above chart P...

Page 47: ...ted in order to generated the reflectivity histogram The CPU determines the type of the original based on the histogram and sets the removal threshold accordingly The CPU transmits the threshold value to the IR Density Correction block This block then corrects the image density of incoming data in accordance with the relation shown below Realtime Scanning X Image density value after density correc...

Page 48: ...ain density detail within characters and other high density areas while removing the fogging component from the low den sity areas The following block diagram illustrates the operation of auto density AE control 1155M104CB White Level Correction Reflectivity Density Converter IR Density Correction block CPU Histogram Processingblock CCD ODD EVEN Analog Processing block PWB IA Sampling PWB IB Memor...

Page 49: ...rdingly The control flow during manual density mode is described below Original CCD Sensor Original placement Lens PWB IB PWB IA IR density correction PWB B AUTO Control Panel PWB B Memory PWB J PWB L PH Section Copy CPU 1155M105CA The user selects manual density mode at the touch panel and then sets the density level step The step setting is transmitted through the Memory board to the Digital Ima...

Page 50: ...e reproduction of the high density areas If the Image Quality mode is set to Photo however the gradation curve is designed to promote image smoothness even density and low noise In this case the curve is adjusted in accordance with the manual density setting as illustrated below The above processing enables the user to select copy density effectively for any of the image quality modes The followin...

Page 51: ...he original l The original detecting filter is a low pass filter LPF that passes visible light in the approximate region of 400nm to 460nm The filter blocks almost all light in the 530nm to 700nm range This reflectivity difference makes it possible for the CCD sensor to detect only the light that is coming from original 1 2 1155M059AA Metric Area Inch based Area Detection of Original Scanning of O...

Page 52: ...o 158 1mm 158 0mm or less Subscan Direction 374 1mm and above A3L A3L A3L A3L A3L 374 0 to 340 1mm A3L A3L B4L B4L B4L 340 0 to 307 1mm A3L A3L B4L FLS FLS 307 0 to 288 3mm A3L A3L B4L A4L A4L 288 2 to 267 1mm A3L A3L B4L Letter L Letter L 267 0 to 220 1mm A3L A3L B4L A4L A4L 220 0 to 158 1mm A4C Letter C A4C A4L A5L 158 0mm or less A4C Letter C A4C A5C A5L Actual Size of Original Main Scan Direct...

Page 53: ...ted light from the pad is cut off by the filter before it reaches the CCD sensor The CCD sensor therefore receives light only from the original Note however that the yellow pad does in fact reflect some light an average of below 26 within the 400nm to 490nm range A threshold is therefore intro duced with respect to reflectivity within this wavelength range to prevent the sys tem from interpreting ...

Page 54: ...the original The extracted edge data is used to calculate the original s size its position and its skew The results of these calculations are then used to determine the reading area for the CCD sensor and scanning start point for the scanner CCD Sensor PWB IA Lens Original Glass Original EDH 1 Digital Image Processing Boad PWB IB Original Detecting Filter LPF Light reflected from original Light re...

Page 55: ...and subscan edge values as follows 1 Skew B A M L tanθ Relation 1 gives the angle of tilt If the user has set the skew warning mode to ON user s choice setting then the copier will output a warning if the detected skew is beyond the acceptable limit B A Original M L 1155M111CA θ ...

Page 56: ...opping down when the Original Detecting Solenoid switches OFF Original Detecting Solenoid ON Detection operation in progress Original Detecting Solenoid OFF While copying is in progress or while the copier is in standby Original Detecting Solenoid SL7 Original Detecting Filter Cushion 1 1155M031AA Original Detecting Mechanism Lens CCD Sensor 1155M032AA Original Detecting Mechanism Lens CCD Sensor ...

Page 57: ... Solenoid remote signal and the Original Detecting Solenoid sole noid do not operate if the copier is set to a mode that does not use original detection Original Detecting Solenoid OFF Timing At Power Switch ON or at CPU Reset When the copier is executing clamp gain auto adjustment the Original Detecting Solenoid remote signal goes after the Original Detecting Sole noid comes ON This causes the Or...

Page 58: ... s home position is at the Scanner Reference Position Sensor This position serves as the reference for the scan motion Mirrors Carriage Mirrors 2 and 3 Mirror 2 and Mirror 3 are fixed to the carriage at a right angle to one another Light reflected from Mirror 1 bounces off Mirrors 2 and 3 passes through the lens and moves to Mirror 4 The carriage for Mirrors 2 and 3 is driven by the Scanner Motor ...

Page 59: ...ssing Board which uses it to detect the motor s speed and travel dis tance The Processing board determines the current motor speed based on the rate of the incoming monitor pulse and adjusts the scanner drive pulse as necessary to maintain stable motor speed At the same time the SCP uses the monitor pulse count to control the scanner s travel distance where the pulse count required for a full moti...

Page 60: ...at the transport roller IR Section Adjust gain sample the shading data Main Unit Continue transport of copy paper EDH 1 Start transport of original IR Section Move scanner to EDH 1 original scan position Main Unit Continue transport of copy paper Ð EDH 1 Transport the original sheet eject IR Section Scan read the image and store the image data into memory Main Unit Prepare memory output then begin...

Page 61: ...If APS Standby If not APS Feed copy paper IR Section Run prescan to detect original s size Main Unit If APS Standby If not APS Stop copy paper at timing roller area standby IR Section Scan read the image and store the image data into memory Move to scanner reference posi tion then stop Main Unit If APS Select copy paper based on origi nal s size Begin copy paper feed Stop copy paper at synchronizi...

Page 62: ...and other components The CCD Cooling Fan Motor draws in air from the outside The IR Cooling Fan Motor passes heated air to the Ozone Ventilation Fan Motor which then passes it out of the unit Control Signal ON OFF WIRING DIAGRAM M32 PJ10A 9B A B 10 M33 PJ9IB 1B B 15 16 CCD Cooling Fan Motor M32 IR Cooling Fan Motor M33 Ozone Ventilation Fan Motor M12 1155M075AA L H L H ...

Page 63: ...ordination between the IR section and the printer section thereby improving the copying performance Standard memory capacity is 16MB The capacity can be increased by installing expansion memory or a hard disk Memory Storage Image Processing System The memory section receives binarized image data from the IR section s Digital Image Processing Board processes the data as described below and outputs ...

Page 64: ...A4 page of copy data Compression Circuitry Inputs the binarized data from the Image Memory block one line at a time and further compresses it Use of this compression step makes it possible for the next block Encoded Mem ory block to hold data IR Section Input Image Memory 2MB Compression Circuitry Encoded Memory 16MB Ð Expansion Circuitry PH Section ƒ Output Image Memory 12MB Memory Section ...

Page 65: ...es of standard A4 originals Ð Expansion Circuitry This block expands the data from the Encoded Memory block restores the data to the form it had prior to compression by the Compression Circuitry block ƒ Output Image Memory Stores the expanded image data and performs the image rotation shift erase and other editing functions for subsequent output to the printer ...

Page 66: ...um This copier is provided with two types of Laser Units one for 400 dpi and the other for 600 dpi The 400 dpi Laser Unit emits laser light when the machine is used as a copier while the 600 dpi Laser Unit emits light when the machine is used as a printer hooked up to a personal computer 1 2 3 4 1155M046AA 1 PH Board PWB J 2 PH Unit 3 CCD Cooling Fan Motor M32 4 Polygon Motor Control Board UN5 10 ...

Page 67: ...s 1155M008AA 1 Polygon Motor M4 2 Cylindrical Lens 3 600dpi LD Collimeter Unit 4 Beam Splitter 5 400dpi LD Collimeter Unit 6 SOS Sensor Board PWB G 7 Return Mirror 8 Long Cylinder Lens 9 SOS Mirror 10 f θ Lenses 1 2 3 4 5 6 7 8 9 10 ...

Page 68: ...locks These blocks implement a variety of types of corrective processing as described below 7 D A Conversion PWB L 8 LIMOS Circuitry PWB L 9 Laser Emission PWB L 2 Bit Expansion PWB J Memory PWB B 3 Screen Processing PWB J 4 γ Correction PWB J 5 PH Line Memory PWB J 6 Erasure of Outside Area PWB J 1 PH I F PWB J ...

Page 69: ...n sity 4 γ Correction PWB J Adjusts data so that the copied image s gradation characteristics will be propor tional to the gradation characteristics of the original Adjustment is made by selecting the appropriate gamma look up table then using the table data to con vert image density values into appropriate laser intensity values 5 PH Line Memory PWB J Corrects for differences in data transfer fre...

Page 70: ...The SOS Sensor Board has two photoreceptors A and B set along the laser path The A and B waveforms are therefore offset with respect to time as the laser moves first across A and then across B The point at which the two waveforms cross Point C below gives the SOS signal output time This SOS signal determines the laser emission timing for two lines in the main scanning direction 1155M009AA Polygon ...

Page 71: ...to B LD force ON area B to C LD OFF C to D Laser beam area according to the image data A B D C SOS Mirror PC Drum 1155M087CA ON OFF A Varies depending on the image area paper size and zoom ratio H L Laser Diode LD SOS Signal A 1155T41MCB ...

Page 72: ...7 18 19 20 1155M047AA 1 Toner Bottle 2 Toner Bottle Holder 3 Toner Bottle Home Position Sensor PC4 4 Main Hopper Toner Replenishing Motor M9 5 Sub Hopper Toner Conveying Screw 6 Sub Hopper Toner Agitating Lever 7 Sub Hopper Toner Empty Switch S7 8 Toner Regulator 9 Developer Conveying Agitating Screw 10 ATDC Sensor UN4 11 Bucket Roller 12 Developer Regulator 13 2nd Sleeve Magnet Roller 14 1st Slee...

Page 73: ...n When drive is later transmitted to the Developing Unit Coupling Gear 2 is pushed to the front by the tension of the spring to mesh positively with Coupling Gear 1 The following parts are driven by the Developing Unit Drive Motor Given in are the drive gears keyed to the illustration Sub Hopper Toner Conveying Screw A Sub Hopper Toner Agitating Lever B Developer Conveying Agitating Screw C Bucket...

Page 74: ...cipal magnetic pole S1 of the 2nd Sleeve Magnet Roller will not be changed with respect to the center of the PC Drum The torsion springs at the front and rear ends of the Developing Unit press the Ds Positioning Collars of the 1st and 2nd Sleeve Magnet Rollers tightly against the PC Drum thus keeping constant the distance between each Sleeve Magnet Roller and the PC Drum Developer Regulator S1 S2 ...

Page 75: ... when toner is attracted to the latent image the carrier is firmly held onto the Sleeve Roller S3 The developer brush is formed so that the developer attracted onto the 1st Sleeve Magnet Roller and not used for development is efficiently transferred onto the 2nd Sleeve Magnet Roller 2nd Sleeve Magnet Roller N3 The developer fed by the 1st Sleeve Magnet Roller is positively attracted onto the surfa...

Page 76: ...f the PC Drum depends on how much lower the PC Drum surface potential Vi is than Vb i e the potential difference When the potential difference is large a greater amount of toner is attracted When the potential difference is small a smaller amount of toner is attracted CONTROL SIGNAL ON OFF WIRING DIAGRAM Developing Bias PJ9A 7A L H D 12 1075M068AA 2nd Sleeve Magnet Roller 1st Sleeve Magnet Roller ...

Page 77: ...ner into the sub hopper immediately clears the Toner Empty condition Toner replenishing continues until the toner amount reaches the target level Automatic Adjustment of ATDC Sensor The ATDC sensor is adjusted automatically when F8 mode is run Running F8 mode after starter has been replaced When toner agitation is completed after the START key is pressed the CPU reads the value output by the ATDC ...

Page 78: ...is more than 3 below the target level the copier will suspend copy operation and start replenishing of toner Copying resumes when the T C read ing gains 1 percentage point But note that this feature does not operate if a Toner Empty condition has been detected Toner Resupply Mode Conditions Resupply Quantity Large resupply quantity The T C value detected by the ATDC sensor is at least 0 5 below th...

Page 79: ...r output voltage T C ratio and the size of the paper being fed through the copier CONTROLLED PART CONTROL SIGNAL ON OFF WIRING DIAGRAM M10 PJ2A 9A L H D 4 Sub Hopper Toner Replenishing Roller Sub Hopper Toner Replenishing Motor M10 1075M133AA Toner Regulator Sub Hopper Toner Agitating Lever Sub Hopper Toner Replenishing Roller Sub Hopper Toner Conveying Screw from Main Hopper 1075M060AA ...

Page 80: ...Toner Empty Switch so that the switch does not activate When toner falls to the near empty level the magnet comes close to the Sub hop per Toner Empty Switch on each downward rotation and then moves away on each upward rotation causing the Sub hopper Toner Empty Switch to go repeatedly ON and OFF Continuation of this ON OFF pulse for a period of 60 seconds causes the copier to recognizes a toner n...

Page 81: ...sition Detecting Plate fitted to the coupling and Toner Bottle Home Position Sensor ensure that the Toner Supply Port in the Toner Bottle is positioned at the top whenever the Toner Bottle is stopped CONTROL SIGNAL ON OFF WIRING DIAGRAM M9 PJ2A 10A L H F 4 CONTROL SIGNAL ON OFF WIRING DIAGRAM PC4 PJ2A 5A L H F 19 1161M041AA Sub Hopper Main Hopper Toner Replenishing Motor M9 Coupling Gear Toner Bot...

Page 82: ...the coupling 1155SBM1109A 11 9 Toner Supply Port Covering Uncovering Mechanism The Toner Supply Port in the Toner Bottle Holder is covered to prevent toner from dropping into the inside of the copier when the PC Unit is slid out of the copier When the PC Unit is in the copier the Sub Hopper keeps the Toner Supply Port uncovered When the PC Unit is slid out of the copier the tension of the springs ...

Page 83: ...fall over the Pre Image Transfer Guide Plate and Image Transfer Paper Separator Coronas Unit The toner particles are drawn through the Suction Duct and collected by the Air Fil ter as the air is drawn out of the copier by Toner Suction Fan Motor CONTROL SIGNAL ON OFF WIRING DIAGRAM M13 PJ2A 3B L H F 4 1075M071AA Air Filter Suction Duct 1st Air Filter 2nd Air Filter Air Toner Suction Fan Motor M13 ...

Page 84: ...rtical Transport Sensor 3 PC38 18 3rd Drawer Paper Take Up Sensor PC34 19 3rd Drawer Feed Roll 20 3rd Drawer Separator Roll 21 3rd Drawer Paper Take Up Roll 22 Wire Take Up Pulley 23 Tension Pulley 24 Main Tray 25 Shifter Transport Timing Belt 26 Shifter Transport Roller 27 Shift Tray 28 Shifter 29 Shift Gate 30 Pulley 31 3rd Drawer Paper Empty Sensor PC50 at front of copier 3rd Drawer Lift Up Sen...

Page 85: ...ight blocking plate in the rear of the drawer blocks 1st 2nd Drawer Set Sensor The copier then knows that the drawer has been slid into position CONTROL SIGNAL UNBLOCKED BLOCKED WIRING DIAGRAM PC44 PJ15F 5B H L H 23 PC45 PJ14F 5B H L G 23 L 1075M107AA Light Blocking Plate 1st 2nd Drawer Set Sensor PC44 45 ...

Page 86: ...the paper take up The copier considers that there is no paper loaded if the sensor is unblocked 1st 2nd Drawer Paper Empty Key detects a paper empty condition when the drawer is slid into the copier The copier considers that there is no paper loaded if the board is unblocked H H 1st 2nd Drawer Paper Empty Sensor PC48 49 Paper Lifting Plate 1st 2nd Drawer Paper Empty Key PWB E1 E2 Paper Empty Lever...

Page 87: ...M 68 CONTROL SIGNAL UNBLOCKED BLOCKED WIRING DIAGRAM PC48 PJ15F 8B H L H 23 PC49 PJ14F 8B H L G 23 PWB E1 PJ5A 1A L H A B 22 23 PWB E2 PJ5A 3A L H C D 22 23 ...

Page 88: ...ft Up Motor is energized it turns the Paper Lifting Arm thus raising the paper stack so it is pressed against the Paper Take Up Roll L 1075M109AA Flat Spring 1st 2nd Drawer Lift Up Motor M24 25 1st 2nd Drawer Set Sensor PC44 45 Lift Up Motor Assy Paper Lifting Arm Gear A Light Blocking Plate 1st 2nd Drawer Lift Up Motor is energized caus ing the paper stack to be raised Paper lifting is started Th...

Page 89: ...er Take Up Roll lowers 1st 2nd Drawer Lift Up Sensor is unblocked 1st 2nd Drawer Lift Up Motor is energized to raise the paper stack thus blocking the 1st 2nd Drawer Lift Up Sensor 1st 2nd Drawer Lift Up Motor is deenergized Note Repeating these operations keeps con stant the pressure between the Paper Take Up Roll and paper regardless of the amount of paper still available for use H L During Copy...

Page 90: ...per stack See 1 Metric Areas operation Press 1st 2nd Drawer Paper Descent Key UN7 8 Load originals on the Duplexing Document Feeder Turn ON Power Switch S1 Place a paper stack on the Multi Bypass Table Open and close a door Slide the Sorter away from and back to the copier Raise and lower the Duplexing Document Feeder Press any key on the control panel L Paper Lifting Arm 1st 2nd Drawer Lift Up Mo...

Page 91: ...cked and is deenergized when the 1st 2nd Drawer Lower Position Sensor is unblocked the blocking plate passing through the sensor This unlocks the drawer and the drawer is pushed approx 70 mm out to the front by the spring placed in the rear of the copier After the drawer has been unlocked Lift Up Motor starts turning forward and is deenergized when the 1st 2nd Drawer Lower Position Sensor is block...

Page 92: ...s is translated into the amount of paper which is shown on the Touch Panel as a graphic marker in units of 50 sheets of paper During Copy Cycle As the paper is consumed and the top level of the paper stack lowers the Lift Up Motor is energized to turn forward to raise the paper stack During this time Lift Up Motor Pulse Sensor detects pulses and that pulse count is accumulated When the count reach...

Page 93: ... deactuated by the lever moved in phase with the Trail ing Edge Stop The paper width in the crosswise direction is detected by 2nd Drawer Paper Size Detecting Resistor mounted directly under the drawer to the rear beside the right rail The resistance of Detecting Resistor is varied as the rack of the Edge Guide for the 2nd Drawer pushes the resistor Size Detection in Feeding Direction Side Detecti...

Page 94: ...Invoice L 2 5 1 2 8 1 2 148 210 140 216 Voltage across resistors Greater 4 23V Smaller 0 54V B5L 182 257 B5C 257 182 A4L 210 297 A4C 297 210 B4L 257 364 A3L 297 420 Quarto C 10 8 254 203 G Letter L 8 10 1 2 203 267 G Letter C 10 1 2 8 267 203 Folio 8 1 4 13 210 330 Letter L 8 1 2 11 216 279 Letter C 11 8 1 2 279 216 Legal 8 1 2 14 216 356 11 14 11 14 279 356 Ledger 11 17 279 432 Comp Form 11 15 27...

Page 95: ... the copier the light blocking plate in the rear of the drawer blocks 3rd Drawer Set Sensor and the copier determines that the 3rd Drawer has been slid into it CONTROL SIGNAL UNBLOCKED BLOCKED WIRING DIAGRAM PC24 PJ8F 2 H L F 19 L 3rd Drawer Set Sensor PC24 Light Blocking Plate 1075M111AA ...

Page 96: ...d by 3rd Drawer Shift Tray Paper Empty Sensor The copier considers that the Shift Tray has run out of paper when 3rd Drawer Shift Tray Paper Empty Sensor is unblocked Copying Operation at Main Shift Tray Paper Empty When a paper empty condition is detected in the Main Tray during a multi copy cycle the paper stack on the Shift Tray if available is transferred to the Main Tray to continue the copy ...

Page 97: ...M 78 CONTROL SIGNAL BLOCKED UNBLOCKED WIRING DIAGRAM PWB E PJ2H 6A H L E F 25 CONTROL SIGNAL BLOCKED UNBLOCKED WIRING DIAGRAM PC50 PJ13F 8B L H F 23 PC31 PJ2H 4A L H H 25 ...

Page 98: ... at its lower limit position 3rd Drawer Lift Up Sensor PC42 Main Tray Shift Tray Wire Light Blocking Plate 3rd Drawer Tray Lower Position Sensor PC20 3rd Drawer Main Tray Overrun Detecting Sensor PC21 3rd Drawer Elevator Motor M28 Wire 1161M044AA When the Main Tray is raised the paper stack on the tray presses upward the Paper Take Up Roll Assy which blocks 3rd Drawer Lift Up Sensor The low signal...

Page 99: ...ier Raise and lower the Duplexing Document Feeder Press any key on the control panel 3rd Drawer Set Sensor is blocked 1sec 3rd Drawer Paper Descent Key is pressed For inch areas 3rd Drawer Elevator Motor is energized to raise the Main Tray The paper stack causes the light blocking plate of the Paper Take Up Roll Assy to block the 3rd Drawer Lift Up Sensor 15msec 3rd Drawer Elevator Motor is deener...

Page 100: ...3rd Drawer Lift Up Sensor is blocked 2 3rd Drawer Lift Up Sensor is blocked during top level correction While the Main Tray is going down 1 3rd Drawer Tray Lower Position Sensor is blocked 2 3rd Drawer Main Tray Overrun Detecting Sensor is blocked CONTROL SIGNAL FORWARD BACKWARD WIRING DIAGRAM M28 PJ2H 6 7B L H I 25 26 CONTROL SIGNAL ON OFF WIRING DIAGRAM UN9 PJ2H 10A L H F 25 CONTROL SIGNAL UNBLO...

Page 101: ...s shown on the Touch Panel as a graphic marker in units of 50 sheets of paper During Copy Cycle As the paper is consumed and the top level of the paper stack lowers the 3rd Drawer Elevator Motor is energized to turn forward to raise the paper stack During this time the Scaner Reference Position Sensor detects pulses and that pulse count is accumulated When the count reaches 50 sheets of paper one ...

Page 102: ...hen blocks again 3rd Drawer Shifter Return Position Sensor This is when the Shifter has just trans ferred the paper stack onto the Main Tray 1 The light blocking plate is shaped as shown below having a cutout in it As it moves past the 3rd Drawer Shifter Return Position Sensor it produces the sensor outputs as shown CONTROL SIGNAL FORWARD BACKWARD WIRING DIAGRAM M29 PJ2H 4 5B L H H I 25 26 CONTROL...

Page 103: ...ift Gate is retracted The drive from 3rd Drawer Shift Gate Motor turns the cam to move the Shift Gate to the front or rear 3rd Drawer Shift Gate Position Sensor detects where the Shift Gate is located CONTROL SIGNAL ON OFF WIRING DIAGRAM M30 PJ2H 2 3B L H H 25 26 CONTROL SIGNAL UNBLOCKED BLOCKED WIRING DIAGRAM PC52 PJ2H 1B L H H 25 26 Shift Gate 4479M005AA Cam 3rd Drawer Shift Gate Motor M30 3rd D...

Page 104: ...er Tray Lower Position Sensor 0 5sec 3rd Drawer Lock Solenoid is energized and remains so for 0 5 sec The locking pawl in the rear of the copier is disengaged from the locking shaft in the rear of the 3rd Drawer The tension of the spring in the rear of the copier pushes the 3rd Drawer approx 70 mm out to the front CONTROL SIGNAL ON OFF WIRING DIAGRAM SL6 PJ7F 2 L H F 19 UN9 PJ2H 10A L H F 25 L 3rd...

Page 105: ...ided to prevent this prob lem Upper Lower Paper Dehumidifying Heater ON OFF Conditions ON Conditions Upper and Lower Paper Dehumidifying Heaters are turned ON when Paper Dehumidifying Switch is turned ON with the power cord plugged in OFF Conditions Upper and Lower Paper Dehumidifying Heaters are OFF when Power Switch S1 is turned ON CONTROL SIGNAL ON OFF WIRING DIAGRAM S8 PJ9C 3 4B L H C D 26 H4 ...

Page 106: ...ism Drive for the paper take up sequence is transmitted from Paper Take Up Motor when 1st 2nd 3rd Drawer Paper Take Up Clutch is energized Paper Take Up Motor M21 Paper Take Up Roll 1st 2nd 3rd Drawer Paper Take Up Clutch CL3 4 5 Paper Feed Roll Paper Separator Roll 1075M114AA ...

Page 107: ... the underside Driven by the Feed Roll the paper drives the Separator Roll allowing the paper to be fed into the Vertical Transport Section Normal Feeding 4425M012AA Since the friction coefficient between the second sheet of paper and the Separator Roll is greater than that between the first and second sheets of paper the Separator Roll is not driven and holds the second sheet of paper The Feed Ro...

Page 108: ...l from the Feed Roll when the drawer is slid out of the copier The paper pressure release mechanism consists of the Pressure Release Spacer on the Separator Roll Assy and the Pressure Release Rail fitted to the upper part of the Drawer Rail When the drawer is slid out the Pressure Release Rail presses down the Pressure Release Spacer which results in the Separator Roll being dis engaged from the F...

Page 109: ...ut from Master Board Control Timing Multi copy cycle for 2 copies CONTROL SIGNAL ON OFF WIRING DIAGRAM M21 PJ2F 2 L H H 19 CL3 PJ15F 2B L H D 1 CL4 PJ14F 2B L H C 1 CL5 PJ13F 2B L H F 1 CONTROL SIGNAL UNBLOCKED BLOCKED WIRING DIAGRAM PC32 PJ15F 2A L H H 22 PC33 PJ14F 2A L H G 22 PC34 PJ13F 2A L H F 22 1155T25MCA T1 75msec T2 6msec ...

Page 110: ... the second sheet of paper for the next copy cycle without causing a paper misfeed It eliminates a paper misfeed that would otherwise result when two sheets of paper are taken up at once Is the second sheet of paper is stationary blocking the paper take up sensor when the trailing edge of the first sheet of paper moves past the vertical transport sensor unblocked the copier determines that it is a...

Page 111: ...e Mechanism Each Vertical Transport Roller is driven by Vertical Transport Motor Timing Chart CONTROL SIGNAL ON OFF WIRING DIAGRAM M22 PJ17F 3 6 Pulse Output D 7 Vertical Transport Motor M22 Vertical Transport Rollers 1075M118AB 1155T26MCA T1 62msec ...

Page 112: ...er Rear of Copier 1075M135AB 1 2 3 4 5 6 7 8 9 10 Front of Copier 8 5 1 Manual Feed Paper Empty Sensor PC6 2 Manual Bypass Separator Roll 3 Manual Bypass Feed Roll 4 Manual Feed Paper Pick Up Solenoid SL1 5 Manual Bypass Edge Guides 6 Manual Bypass Table 7 Manual Feed Size Detecting Resistor VR1 8 Paper Stopper 9 Manual Bypass Take Up Roll 10 Right Door ...

Page 113: ...pass Table is transmitted from Transport Motor via Manual Feed Paper Take Up Clutch to the Manual Bypass Feed and Take Up Rolls Here is the drive train 1155M041AA Transport Motor M23 Lower Transport Roller Manual Feed Paper Take Up Clutch CL1 Manual Bypass Feed Roll Manual Bypass Take Up Roll ...

Page 114: ...heet of paper is fed in by separating the second sheet of paper from the top one This is accomplished by the Torque Limiter fitted to the Separator Roll shaft which stops the Separator Roll when there is a change in friction between the Feed and Separator Rolls For details of the paper separating mechanism see 12 14 Drawer Paper Take Up Mechanism SL1 Take Up Roll Position Paper Stoppers At take up...

Page 115: ...LOCKED WIRING DIAGRAM PC6 PJ7A 9B H L H 29 1075M140AA Manual Bypass Take Up Roll Manual Feed Paper Empty Sensor PC6 When Paper is Placed When paper is placed on the Multi Bypass Table PC6 is blocked as follows When No Paper is Placed When there is no paper on the Multi Bypass Table PC28 is unblocked as follows L H PC6 Blocked L PC6 Unblocked H 1075M142AA 1075M141AB Manual Feed Paper Empty Sensor ...

Page 116: ...anual Bypass Take Up Control Multi Copy Cycle for 2 Copies CONTROL SIGNAL ON OFF WIRING DIAGRAM CL1 PJ2A 2B L H I 29 30 SL1 DOWN PJ8A 2B L H H 15 SL1 UP PJ8A 1B L H H 15 1155T27MCA T1 67msec T2 87msec T3 76msec ...

Page 117: ...in the paper before the Synchronizing Rollers The Transport Synchronizing Rollers Unit is made of the following parts Upper Synchronizing Roller Paper Dust Removers Upper Transport Roller Transport Roller Sensor PC1 Lower Transport Roller Lower Synchronizing Roller Paper Leading Edge Sensor PC2 1075M127AA 1155M042AA Transport Motor M23 Synchronizing Motor M5 Upper Synchronizing Roller Lower Synchr...

Page 118: ...ust Remover As paper is fed through the rollers the charges on the tubing attract paper dust from the paper The dust is then transferred onto the Paper Dust Remover 1155SBM1302A 13 2 Transport Roller Drive Mechanism The Upper Transport Roller is driven by the Lower Transport Roller The Lower Transport Roller is driven by Transport Motor through a gear train 1075M129AA Upper Synchronizing Roller Pa...

Page 119: ... motor is controlled by energizing the four internal coils using pulse signals output from Drawer S P Board as controlled by Master Board Multi Copy Cycle for 3 Copies CONTROL SIGNAL UNBLOCKED BLOCKED WIRING DIAGRAM PC2 PJ3A 2B H L B 7 CONTROL SIGNAL ON OFF WIRING DIAGRAM M23 PJ16F 3 6 Pulse Output D 7 1155T28MCA T1 67msec T2 76msec ...

Page 120: ...SBM1305A 13 5 Synchronizing Roller Drive Control Synchronizing Motor a stepping motor is controlled by energizing the four internal coils using pulse signals output through the control by Master Board CONTROL SIGNAL UNBLOCKED BLOCKED WIRING DIAGRAM PC2 PJ3A 2B H L B 7 CONTROL SIGNAL ON OFF WIRING DIAGRAM M5 PJ9A 2 5B Pulse Output D E 7 1155M044AA Synchronizing Motor M5 Lower Synchronizing Roller 1...

Page 121: ...or Fingers physically peel the paper off the surface of the PC Drum For details see PAPER SEPARATOR FINGERS The Image Transfer Paper Separator Coronas Unit is provided with a Pre Image Transfer Guide Plate that determines the angle at which the paper comes into contact with the PC Drum and keeps an optimum distance between the paper and the PC Drum so that the image may be properly transferred ont...

Page 122: ...he Image Transfer Paper Separator Coronas is absorbed by the Ozone Filter from the air being drawn out of the copier by Suction Fan Motor CONTROL SIGNAL ON OFF WIRING DIAGRAM HV2 I T Corona PJ3A 5A L H B 7 HV2 P S Corona PJ3A 2A L H B 7 1155T30MCA 1155M015AA ...

Page 123: ...ator Charge Wire Cleaning Motor is energized its drive is transmitted to the Screw Shaft This in turn moves the two Cleaners mounted on the Screw Shaft Image Transfer Paper Separator Wire Cleaning Motor is a two phase stepping motor The Cleaners are detected at their home position which is the reference position for the cleaning motion by Transfer Separator Wire Cleaner Home Position Sensor The Cl...

Page 124: ... The number of copies made exceeds 10K after the Power Switch has been turned ON and 10 minutes elapse after the last copy cycle has been com pleted 3 An Image Transfer Paper Separator Coronas malfunction which has been detected is reset 4 A misfeed malfunction which has been detected is reset with a sheet of paper remaining at the area near the Image Transfer Paper Separator Corona CONTROL SIGNAL...

Page 125: ...the copier The Blade Tension Spring ensures that the Cleaning Blade is pressed against the PC Drum surface at a given constant pressure The Toner Antispill Mylar prevents the scraped off toner from falling onto the areas inside the copier ensuring all scraped off toner falls on the Toner Conveying Coil The PC Drum Paper Separator Fingers join forces with the Paper Separator Corona to positively se...

Page 126: ...ting the PC Drum as well as Cleaning Blade from deteriorating Drive from PC Drum Drive Motor turns the Lateral Movement Cam The Lateral Movement Pin on the end of the Cleaning Blade Assy Mounting Bracket is pushed by the cam which results in the Cleaning Blade being moved back and forth 1155M017AA Cleaning Blade Assy Mounting Bracket Lateral Movement Pin 1155M018AA PC Drum Drive Motor M2 Later Mov...

Page 127: ...ven by PC Drum Drive Motor The Toner Collecting Bottle has a capacity of approx 13 liters Toner Collecting Bottle Set Sensor is provided to detect that the Toner Collecting Bottle is installed so that the copier can inhibit the initiation of a copy cycle if the Toner Collecting Bottle is missing CONTROL SIGNAL UNBLOCKED BLOCKED WIRING DIAGRAM PC53 PJ11F 2 H L G 32 1155M019AA Cleaning Blade Toner C...

Page 128: ...al with their tips ground to mini mize damage to the surface of the PC Drum There are three Paper Separator Fingers provided to cope with any paper size The Paper Separator Fingers are pressed against the surface of the PC Drum to positively separate paper from it Further to minimize damage to the PC Drum the Fingers are moved back and forth CONTROL SIGNAL ON OFF WIRING DIAGRAM SL4 PJ10A 8B L H C ...

Page 129: ...ever at B the Paper Sepa rator Fingers are turned counterclockwise This brings the fingers into contact with the surface of the PC Drum The pressure the Paper Separator Fingers exert against the surface of the PC Drum is maintained at approx 1g When the Separator Finger Solenoid is deenergized the Actuating Lever is low ered by the tension of the spring This results in the Finger Shaft being turne...

Page 130: ...er is returned to the original position in the direction of arrow E by the tension of the spring As a result pawl D moves over the ratchet one tooth back The ratchet is not turned backward as it is provided with a lock that prevents the ratchet from turning backward According to the profile of the eccentric cam the Lateral Movement Plate is moved as the eccentric cam turns This results in the Fing...

Page 131: ...incandescent tungsten filament lamps connected in a series inside a glass tube CONTROL SIGNAL ON OFF WIRING DIAGRAM LA1 PJ10A 10B L H C 4 5 Main Erase Lamp LA1 1075M093AA 1155M016AA Main Erase Lamp LA1 ON OFF ON OFF ON OFF 1155T32MCA PC Drum Drive Motor M2 Developing Unit Drive Motor M1 LA1 200msec 950msec 920msec 1155T32MCA 16 MAIN ERASE LAMP ...

Page 132: ...n Belt Drive Roller which is driven by PC Drum Drive Motor Four rubber belts are used as the Suction Belts There are small holes in each belt to enhance the drawing power of the Suction Fan Motor Further each belt has a rough surface which prevents slippage during paper transport CONTROL SIGNAL HALF SPEED FULL SPEED WIRING DIAGRAM M14 PJ3A 7B H L B 8 1155M021AA PC Drum Drive Motor M2 Suction Belt ...

Page 133: ...ats the roller from the inside to ensure stabilized fusing performance It also minimizes wrinkles and skewed feed that would occur due to variations in the roller s surface tempera ture during the early period after the power has been turned ON 1155M022AA Web Regulation Plate Web Roller Oil Supply Web Feeding Roller Web Take Up Roller Upper Paper Separator Fingers Lower Paper Separator Fingers Fus...

Page 134: ...otor fitted to the Fusing Drive Unit in the rear of the copier CONTROL SIGNAL ON OFF WIRING DIAGRAM M3 PJ7A 1A L H C D 1 1155M023AA Upper Fusing Roller Drive Gear Upper Fusing Roller Lower Fusing Roller Fusing Motor M3 The gears enclosed by are on the copier frame Clutch Spring 1155T33MCA ...

Page 135: ...l is applied to the surface of the Upper Fusing Roller when the Clean ing Web being fed off the Web Roller is pressed tightly up against the Upper Fusing Roller by the Oil Supply Web Feeding Roller The surface of the Upper Fusing Roller is cleaned at the same time when silicone oil is applied to it The silicone oil is then transferred onto the Lower Fusing Roller The oil prevents copies having off...

Page 136: ...e length of web taken up The copier therefore refers to the count of the Web Roller counter and turns the Cleaning Web Drive Motor one turn in the beginning for every 7 copies made and at the last stage for every 14 copies made thereby ensuring that a given amount of web is taken up for each copy The Web Take Up Roller Shaft is provided with a Clutch Spring that prevents the roller from turning ba...

Page 137: ...ng ON and OFF the heater lamps to arrive at a predetermined temperature Temperature control completed means the predetermined temperature has been reached Example The copier is turned ON when the Upper and Lower Fusing Rollers are cool in the morning and a copy cycle is run following the completion of warm up Part Name Symbol Function Controlled Temperature Upper Fusing Roller Heater Lamp H1 Turns...

Page 138: ...ture Detection of Abnormally High Temperature When the Upper Fusing Roller Thermistor detects an abnormally high temperature 215 C or higher Master Board outputs a signal to turn OFF Main Relay thus cutting off power to the heater lamps CONTROL SIGNAL ON OFF WIRING DIAGRAM H1 SSR1 PJ8A 3B L H A 1 2 H2 SSR2 PJ8A 4B L H A 1 2 CONTROL SIGNAL Low Temp High Temp WIRING DIAGRAM TH1 PJ3A 9B Analog Input ...

Page 139: ...erature to increase This recovers the fusing performance When good fusing performance is recov ered the copier resumes the normal CPM CPM Control When the normal CPM is 62 copies min for example and when the copier determines that fusing performance has been degraded it reduces the CPM by 25 to 45 copies min During the CPM control the copier provides a greater interval between scan motions and bet...

Page 140: ...M 121 Multi Copy Cycle Immediately After Warm up in Early Morning normal CPM 62 1155M082CA ...

Page 141: ...xit tray ejection or Toward the lower copy exit tray or duplex unit Paper Exit Roller Discharge Brush Upper Copy Exit Trays Exit Roll Paper Exit Switch S10 Exit Switching Lever Fusing Section Transport Roll Upper Fusing Roller Lower Fusing Roller Transport Roller 1155M024AA Front View Rear View Exit Duplex Switching Solenoid SL3 1075M020AA 19 EXIT DUPLEX SWITCHING SECTION ...

Page 142: ...exit tray or the duplex unit CONTROL SIGNAL ON OFF WIRING DIAGRAM SL3 PJ2A 14A L H D 1 Paper Exit Roller To Upper Copy Exit Tray Switching lever To Lower Copy Exit Tray or Duplex Unit Exit Duplex Switching Solenoid SL3 Rear View 1075M021AA SL3 ON SL3 OFF Rear View 1155M115AA 1155M116AA SL3 ON Sheet is ejected to upper copy exit tray SL3 OFF Sheet continues transport to lower copy exit tray or to d...

Page 143: ...or else transport to the Duplex Unit Exit Duplex Switching Section Fusing Section Turnover Transport Roller 2 Exit Switching Lever Turnover Roll Turnover Roll Turnover Film Duplex Unit Turn over Exit Solenoid Turnover Roll Turnover Transport Roller 1 Turnover Feed Entry Sensor PC11 Duplex Unit Turnover Feed Jam Sensor PC57 Turnover Roller Turnover Roller Separator Solenoid SL2 1155M025AB Duplex Un...

Page 144: ...s of gears on the Duplex Unit The Turnover Roller is controlled independently by the Turnover Motor Turnover Trans port Roller 1 Turnover Trans port Roller 2 Turnover Feed Entry Sensor PC11 Turnover Roller Turnover Feed Jam Sensor Duplex Unit Gears Turnover Motor M6 Turnover Roller Interval Solenoid SL2 1155M026AA ...

Page 145: ...tion is switched a specified interval after the Turnover Feed Entry Sensor detects the sheet s leading edge In the event of a jam anywhere in the copier the Turnover Feed Jam Sensor detects sheets that are left in the turnover section of the copier If Turnover Roller is separated from drive roller If Turnover Roller is engaged with drive roller CONTROL SIGNAL UNBLOCKED BLOCKED WIRING DIAGRAM PC11 ...

Page 146: ...r before the trailing edge of the previous sheet has cleared this roller Separation is generated by activation of the Turnover Roller Separator Solenoid Activation of the Turnover Roller Interval Solenoid causes a lever to press against the Turnover Roll so that the Turnover Roller Drive Roller moves away from the Turnover Roller CONTROL SIGNAL ON OFF WIRING DIAGRAM SL2 PJ6A 2B L H G 1 Turnover Ro...

Page 147: ... the sheet to either of the following Ejection at the lower copy exit tray if the copier is operated in folded sorting mode Transport to the turnover switching section To Turnover Switching Section To Lower Paper Exit Copy Tray Duplex Unit Turnover Exit Solenoid SL5 Copier Rear View 1155M002AA 21 LOWER PAPER EXIT SWITCHING SECTION ...

Page 148: ... Depending on the Duplex Unit Turnover Exit Solenoid state ON or OFF the sheet moves either to the Lower Paper Exit Copy Tray ejection or else to the Turnover Switching Section CONTROL SIGNAL ON OFF WIRING DIAGRAM SL5 PJ6A 3B L H F 1 Duplex Unit Turnover Exit Solenoid SL5 1155M028AA SL5 ON 1155M003AA SL5 OFF 1155M004AA Copier Rear View ...

Page 149: ...ntal Transport Roller 3 Vertical Transport Motor drives Transport Roller 4 drives Horizontal Transport Roller 3 by means of a tim ing belt The action of the duplex rollers transports the sheet up to the Transport Roller Duplex Unit Horizontal Entry Transport Sensor PC13 Duplex Unit Horizontal Transport Sensor PC12 Duplex Unit Horizontal Transport Jam Sensor PC56 1155M029AA Fusing Motor M3 Vertical...

Page 150: ...e been printed on both sides The copier starts the cycle by taking up and performing one side copying on a fixed number of blank sheets 6 sheets if A4 paper The copier then refeeds these sheets for copying on the other side When second side copying is fin ished the copier begins the next cycle CONTROL SIGNAL UNBLOCKED BLOCKED WIRING DIAGRAM PC12 PJ7A 3B H L G 29 PC13 PJ7A 4B H L F G 29 PC56 PJ7A 5...

Page 151: ...the power cord is unplugged or the RAM Board removed from the copier Backup Battery requires a voltage of 2V or more to retain the contents of memory Important As we noted above the RAM stores critical data If the RAM Board has been replaced with a new one memory must first be cleared and then all settings be made again It should also be noted that the RAM Board should not be replaced at the same ...

Page 152: ...Unplug the power cord from the power outlet and remove the Upper Right Cover 2 Insert the memory card into the specified position on PWB B 3 Plug the power cord into the power outlet 4 Turn ON Power Switch S1 This rewrites the data 5 On the Touch Panel make sure that the data has been prop erly written Then unplug the power cord from the power outlet again Do not turn S1 OFF at this time 6 Remove ...

Page 153: ...Di620 SWITCHES ON PWBs TECH REP SETTINGS 1155SBS000AA ...

Page 154: ... s Choice Function Setting Procedure S 12 4 3 User s Choice Function Tree S 13 4 4 Settings in the User s Choice S 15 S 21 5 1 Tech Rep Mode Menu Screen S 21 5 2 Tech Rep Mode Function Setting Procedure S 21 5 3 Tech Rep Mode Function Tree S 22 5 4 Settings in the Tech Rep Mode S 24 1 Function S 24 2 Tech Rep Choice S 29 3 System Input S 32 4 Counter S 33 5 I O Check S 39 6 I R EDH Check S 40 7 RO...

Page 155: ...0 6 1 Security Mode Menu Screen S 50 6 2 Security Mode Function Setting Procedure S 50 S 52 7 1 Adjust Menu Screen S 52 7 2 Adjust Function Tree S 52 7 3 Adjust Function Setting Procedure S 53 6 SECURITY MODE 7 ADJUST ...

Page 156: ...tatic electricity such as a carpet or plastic bag Do not touch the parts and printed patterns on the PWBs with bare hands 1151SBS0102A 1 2 Precautions for Replacement and Inspection Whenever replacing the PWB make sure that the power cord of the copier has been unplugged When the power is on the connectors must not be plugged in or unplugged Use care not to strap the pins of an IC with a metal too...

Page 157: ...ss of this key Access mode will allow the user to make copies Energy Saver Key Set the copier into the Energy Saver mode Interrupt Key Sets the copier into or lets it leave the Inter rupt mode Panel Reset Key Press to set the copier into the initial mode clearing all settings made on the control panel Note It does not clear the zoom ratios and job settings stored in memory and Interrupt mode Clear...

Page 158: ...iary Density Orig Copy or Basics Message Display Shows the current copier status operating instructions and other data including the number of copies selected and the amount of paper still available for use Basic Function Keys Allows the user to select the Finishing zoom ratio and copy paper Function Display Shows graphic representations of the settings currently made for Orig Copy and Finish ing ...

Page 159: ...ing Display A warning display is given when any further copier operation will not be possible or only faulty results will come out due to erroneous panel settings or other cause Example Unmatched paper size in Auto Paper Error Display An error display is given when trouble occurs which can be corrected by the user Example Paper misfeed toner empty door open Caution Display A caution display is giv...

Page 160: ... Name Description S1 1 S1 2 S1 3 S1 4 Used when making factory settings Note 1 NEVER use these switches in the field Note 2 Normally set to OFF for all PWB B PWB W PWB S HV2 PWB J PWB A 1155S013AC Factory Setting Switches 3 FUNCTIONS OF SWITCHES AND OTHER PARTS ON PWBs ...

Page 161: ...ed DIPSW1 4 DIPSW1 5 External Interface I F Connection Switches Used when an external I F is connected Symbol Name Description LD1 Operation Check LED Starts blinking at 1 second intervals when the Power Switch is turned ON LD2 LD3 Light up when the system is ready for operation Operation Check LED 1155S014AC Expansion Memory DIPSW1 1 DIPSW1 2 Standard 16MB ON OFF 36MB ON ON Hard Disk DIPSW1 3 Mou...

Page 162: ...ession Check LED including reading Lit up during compression LED4 Expansion Check LED including printing Lit up during expansion LED5 Fatal Error Check LED Lights up when an error that is categorized as fatal occurs LED6 Error Check LED Lights up when an error that is categorized as an ordinary error occurs LED7 Caution Check LED Lights up when a condition that is categorized as a caution occurs L...

Page 163: ...e 2 Initial settings are OFF for all S3 1 S3 2 S3 3 S3 4 Used when making factory adjustments Note NEVER use these switches in the field S4 PHC Board CPU Reset Switch Used to reset the CPU on the PHC Board LD1 Laser Power Setting Check LED Lights up or goes out when the laser power is set Factory Adjustment Check Switches Factory Adjustment Switches 1155S002AA PJ2 TP2 TOTAL MEMORY COM TP3 TP1 S25 ...

Page 164: ...ry Clear Completed appears on the Touch Panel If it does touch ENTER Symbol Name Description S25 Trouble Reset Switch Resets a malfunction including those of the Exposure Lamp C04XX and fusing C05XX S26 Tech Rep Setting Switch Sets the copier into the Tech Rep mode PJ2 Initialize Switch Forcibly resets a misfeed or malfunction that occurs due to incorrect operation etc when it cannot be reset by o...

Page 165: ...ose Trouble Reset Switch S25 Initialize Points PJ2 Memory Clear Test Point TP3 Misfeed display Malfunction display excluding Exposure Lamp and fusing malfunctions Malfunction display including Exposure Lamp and fusing malfunctions Erratic operation display User mode Tech Rep mode System input Level history Security mode Adjust mode 1155S016AC ...

Page 166: ...ator Corona wire has been replaced Symbol Name Description SW1 SW2 1 SW2 2 SW2 3 SW2 4 SW2 5 SW2 6 SW2 7 SW2 8 Used when making factory settings Note 1 NEVER use these switches in the field Note 2 All should be set to OFF LED1 Operation Check LED Starts blinking at 0 5 sec intervals when the Power Switch is turned ON LED2 Error Check LED Lights up when an error occurs LED3 SCSI Communications Chec...

Page 167: ...e key 2 Select the page number key that contains the desired function from among 1 6 through 6 6 shown at the bottom of the Touch Panel 3 Select the function to be set and make settings as required 4 After the settings are complete touch the Enter key to validate the settings Note The function selected is highlighted Exiting the Mode Perform any one of the following steps to go back to the Basic s...

Page 168: ...d Mixed Original Detect Memory Recall Auto Paper Auto Size Tray Priority 2 6 Exposure Priority Default Level Output Priority Intelligent Sorting Criss Cross Mode 3 6 Realign Warning Small Originals 4 in 1 Copy Order Date Printing Format Date Printing Position Page Printing Position 2in1 4in1 BookletCopyZoom ...

Page 169: ...User s Choice 4 6 Confirmation Beep 5 6 Universal Tray Special Paper Auto Panel Reset Energy Save Mode Plug In Counter Reset Auto Shut Off 6 6 Date Time Set Print Exposure Priority Device Administrator Mode ...

Page 170: ... not OFF when power is turned ON or the Panel Reset Key pressed Memory Recall Select whether to enable ON or disable OFF the function that retains the image data even after the last copy paper has been fed out allowing the user to recall the same image data Auto Paper Auto Size Specify the default mode selected automatically when power is turned ON or the Panel Reset key pressed Paper Priority Spe...

Page 171: ...l Exposure Note EXP 1 Lighter to EXP 9 Darker Output Priority Select the default finishing type when the copier is equipped with a Sorter or Staple Sorter Intelligent Sorting Select whether to turn ON or OFF the function that automatically switches between Sort and Non Sort according to the number of originals loaded in the document feeder Criss Cross Mode Select whether to enable ON or disable OF...

Page 172: ...ormat for date printing Punctuation Date Format Date Printing Position Set the position at which to print the date Metric Areas Inch Areas Page Number Position Set the position at which to print the page number how many millimeters or inches from the bottom of the page Metric Areas Inch Areas Touch Panel Display Setting The default is Confirmation Beep Select whether to run ON or OFF the beep that...

Page 173: ... reset the panel or not when the Plug In Counter is pulled out of the copier a magnetic card is pulled out of the Data Controller or the Access Mode key is pressed Auto Shut Off Select whether to turn ON or OFF the Auto Shut Off function that shuts down the copier a given period of time after a copy cycle has been com pleted or the last key operated Selecting ON means setting the time it takes the...

Page 174: ...Counter Limit ID Count Reset Clears the total and size counters of all accounts No Enter the set account number from the 10 key Pad Total Displays the count of the Total Counter It can also be cleared with the Clear key Size Displays the count of the Size Counter It can also be cleared with the Clear key Limit Enter the maximum number of copies that can be made from the 10 key Pad ID Enter the acc...

Page 175: ...can be set using the 10 key Pad User Help Set the user help code to be transmitted by the user to the Center using the EP NET Non Auto Shut Off Select whether to enable or disable the setting of the Auto Shut Off func tion available from User s Choice Highlighted 1 to 99 OFF Disable Enable OFF key is not displayed OFF key is displayed ...

Page 176: ...nto the Tech Rep mode 1 With the copier turned ON press the Tech Rep Setting Switch 2 With the Meter Count screen opened from Utility press the following keys in this order 2 Select the particular Tech Rep mode function to be set 3 Make the necessary settings by following the instructions given sequentially on the screen Note The function selected is highlighted Exiting the Mode Touch Exit on the ...

Page 177: ...sk Format Hard Disk Check ECC Check Date Time Check Image Memory System Set FLS Paper Auto Paper Config Printer Time Out Touch Panel Adj Maintenance Call Simplex Duplex Universal Toner Empty Stop T C Abnormal Lead Edge Erase Trail Edge Erase Loop Adjustment γ Table Straight Line VG Adjust TC Auto Recover Printer Change Fixed Zoom Paper Size Input Marketing Area Tel input CH Wire Cleaning System In...

Page 178: ... Zoom FD Position CD S ADF Mode CD S ADF Mode FD Skew Check Function EDH Sensors Port Signal Finisher I O Check Erasure Width ID in Photo Mode Skew Detection Tech Rep Choice EDH I O Check EDH Paper Passage ROM Version RD Mode Level History Admin Mode I O Check Fold Stopper Staple Edge Staple Center Z Fold Paper Fin Warning Off Tech Rep Choice Tech Rep Mode ...

Page 179: ...nt sheet of paper out before halting Another press of the Start key will resume the test cycle F2 HV Output Setting Set the output of each HV Note This function is only for factory setting and should never be used in the field F5 AIDC Sensor Automatically adjusts the AIDC Sensor Procedure Press the Start key to start the adjustment sequence Note The copier automatically stops as soon as it complet...

Page 180: ...ocedure 1 Select either the minimum reference value or maximum reference value 2 For the minimum reference value slide the Edge Guide to the minimum width B5Y crosswise and press the Start key For the maximum reference value slide the Edge Guide to the maximum width A4 crosswise and press the Start key Note The copier automatically stops as soon as it completes setting the volt age The Stop key ma...

Page 181: ... Panel shows the percentage of processing completed of the diagnostic sequence If the sequence has been completed okay it gives the message of OK if a fault was encountered it gives the mes sage of NG together with the address at which the fault occurred Procedure Press the Start key to start the diagnostic sequence Note The copier automatically stops as soon as it completes the diagnostic sequenc...

Page 182: ...t image If a fault was encountered the panel gives the message of NG and the corresponding malfunction code C12XX C13XX or the copier feeds out paper with a defective image Procedure 1 Touch either Memory Prn1 or Memory Prn2 2 Press the Start key to start the diagnostic sequence The copier runs a print cycle at the same time 3 Compare the image on the paper fed out with that of the sample to deter...

Page 183: ...tart key to start the diagnostic sequence Note The check is automatically terminated as soon as it is completed ECC Check Checks for proper connection and operation of the ECC Note The Touch Panel shows the percentage of sequence completed If the check has been completed okay it gives the message of OK If a fault was encountered the panel gives the message of NG together with the corresponding mal...

Page 184: ...pier and Pi6000 if a Pi6000 is connected If Disable is selected communication detection is not made Note A malfunction code appears on the Touch Panel if no communications are carried out between the copier and Pi6000 within the set period of time Touch Panel Adj Correct the deviation in the sensitive area of the Touch Panel Procedure 1 Touch the four points marked with on the screen in any sequen...

Page 185: ... The press of the Start key lets the copier output a test pattern grid pat tern The paper source is the Universal Tray Trail Edge Erase Set the erase width on the trailing edge of the image Note The press of the Start key lets the copier output a test pattern grid pat tern The paper source is the Universal Tray Loop Adjustment Set the length of loop to be formed between the Synchronizing Rollers γ...

Page 186: ...g 0 results in no straight line screening performed VG Adjust Set VG when a fog or void occurs in the image T C Auto Recover Select whether to enable or disable auto recovery of T C when it drops Note As a rule the setting should not be changed Highlighted 0 1 4 7 Not used Making the Making the image look hard image look soft 2 0 3 Lighter Darker Enable Disable ...

Page 187: ...rocedure 1 Touch the key of the paper source for which the paper size setting is to be changed to show the Paper Size Input 2 screen 2 Touch the desired paper size key Note If the 10 Key Pad has been selected enter the FD and CD size of the paper from the 10 Key Pad 3 Touch End to validate the paper size setting Marketing Area Select the marketing area to set the paper size and fixed zoom ratios P...

Page 188: ...rent count value and the above setting Each counter may be reset to 0 independently of each other 3 When the count reaches the preset value the Maintenance Call reminder M1 is given Note When Call Indicated is selected for Maintenance Call available from Tech Rep Choice Setting a Count 1 Touch Maint Set and then press the Clear key to clear the count If the count is accidentally cleared pressing t...

Page 189: ...p Entrance Dup Exit No of misfeeds that occurred at the paper take up section of the LCT No of misfeeds that occurred at the paper take up transport section of the copier No of misfeeds that occurred at the paper trans port section of the copier No of misfeeds that occurred at the paper sepa rator section of the copier No of misfeeds that occurred at the Fusing Unit of the copier No of misfeeds th...

Page 190: ...ual Feed 1st Drawer 1st Drawer Parts 2nd Drawer 2nd Drawer Parts 3rd Drawer 3 d D P t No of sheets of paper fed from the Multi Bypass Table No of sheets of paper fed from the 1st Drawer No of sheets of paper fed from the 1st Drawer No of sheets of paper fed from the 2nd Drawer No of sheets of paper fed from the 2nd Drawer No of sheets of paper fed from the 3rd Drawer No of sheets of paper fed from...

Page 191: ...count If the count is accidentally cleared pressing the Interrupt key will undo the clear operation 2 Enter the desired value from the 10 Key Pad Clearing a Count Touch Count and then press the Clear key to clear the count If the count is accidentally cleared pressing the Interrupt key will undo the clear opera tion Display Description Developer 1 Developer 2 Other PM Parts 1 Other PM Parts 2 Clea...

Page 192: ...harge Corona Malfunction Code C0090 C0100 C0110 C0200 Location Transfer Corona Developing Bias Separator Corona Exposure Lamp Malfunction Code C0210 C0220 C0230 C04X0 Location Fusing Unit Scanner Encoder pulse Error 3rd Drawer 2th Drawer Malfunction Code C05X0 C0600 C090X C091X Location 1st Drawer 4th Drawer LCC PFC Malfunction Code C092X C095X C099X C09CX Location Finisher Transport Staple Unit C...

Page 193: ...e H sync Trouble Malfunction Code C1330 C0602 C0650 C1430 Location 2hours correction Trouble EDH Trouble Gain Adjust Trouble CCD Trouble Malfunction Code C0F20 C143E C1440 C1441 Location Serial GA Trouble EEPROM Trouble IR Cooling Fan Lamp Heater Malfunction Code C1461 2 C1468 C1499 C14AX Location Sequence Timeout IR Filter SPC Error Memory Check Trou ble EEC Control Trouble Controler Trouble Malf...

Page 194: ...heck This function is used to check the sensors and boards when a paper misfeed or malfunction occurs thereby locating the fault Tech Rep Mode I O Check Touch Panel Display Operation I O Check Note For details see TROUBLESHOOTING ...

Page 195: ... of the intensity of lamp light Note The Touch Panel shows OK if the intensity data and light distribu tion ratio fall within the specified range and NG if they fall outside the range It gives the message of Unable if the check sequence is abnormally terminated Procedure Press the Start key to start the measurement cycle Note The copier automatically stops as soon as it completes the measure ment ...

Page 196: ...adjustment Note 2 The Touch Panel shows OK if the adjustment value falls within the specified range and NG if it falls outside the range It gives the message of Unable if a faulty detection size is noted Procedure 1 Place the chart on the Original Glass 2 Press the Start key to start the measurement cycle 3 If the measurement result is okay touch Save which highlights the key to save the measureme...

Page 197: ...tion after making sure that the result of the Skew Check is within 1 0 Note 2 The Touch Panel shows OK if the adjustment value falls within the specified range and NG if it falls outside the range It gives the message of Unable if the adjustment sequence is abnormally terminated Procedure 1 Load the chart in the EDH 2 Press the Start key to start the measurement cycle 3 If the measurement result i...

Page 198: ...es that the copier has been able to take measurements providing no criteria for determining if the specifications are met or not Procedure 1 Load the chart in the EDH 2 Press the Start key to start the measurement cycle Note The copier automatically stops as soon as it completes the measure ment cycle The Stop key may however be pressed to halt the sequence Tech Rep Choice Allows the Tech Rep to s...

Page 199: ...operating modes Procedure 1 Touch the desired sub function key 2 Press the Start key to start the check sequence Note The copier automatically stops as soon as it completes the check sequence The Stop key may however be pressed to halt the sequence Touch Panel Display Setting ROM Version Displays the version of the current ROM Note No versions are displayed if the system is not mounted with a ROM ...

Page 200: ...the outside line number Note 2 The time it takes the private branch exchange PBX system to switch from the extension line to the outside line varies depending on the type of PBX system used Set this time as follows Fixed switching time Enter the pause code a single lasts 2 sec Varying switching time Enter the wait code W Initial Transmission Used to perform the initial transmission from the PPC to...

Page 201: ...anch exchange PBX system to switch from the extension line to the outside line varies depending on the type of PBX system used Set this time as follows Fixed switching time Enter the pause code a single lasts 2 sec Varying switching time Enter the wait code W Initial Transmission Used to perform the initial transmission from the PPC to the Center to check for correct communication when the Data Te...

Page 202: ...urrent Displays the approximate current ATDC Sensor output voltage and the T C value Note Here is the correspondence between the output voltage and T C 3 57V 1 3 21V 2 2 86V 3 2 68V 3 5 2 50V 4 2 32V 4 5 2 15V 5 AIDC Fine Set Displays the AIDC Sensor LED control voltage adjusted with the AIDC Sensor contamination correction fine adjustment Note 1 The LED control voltage is adjusted in the range be...

Page 203: ... 12 AIDC Current Displays the approximate current AIDC Sensor output voltage Vg Current Displays the grid voltage as corrected through image stabilization and related functions Vb Current Displays the developing bias voltage as corrected through image stabiliza tion and related functions Touch Panel Display Setting Copy Track Copy Track Date Max Copy Sets User Help See Administrator Mode of User s...

Page 204: ...nsor Tech Rep Choice Allows the Tech Rep to set check adjust and program the various Tech Rep functions for the Finisher Fold Stopper Adjust the stop position of the 1st Crease Stopper Note In the Inch Areas this function cannot be used because the 1st Crease Stopper has a different mechanism Staple Edge Set the leading edge stapling position in the FD direction Staple Center Set the center stapli...

Page 205: ...ys in this order 2 Enter the Security mode by pressing the following keys in this order 3 Select the particular Security mode to be set 4 Make the necessary settings by following the instructions given sequentially on the screen Note The Function selected is highlighted Exiting the Mode Perform any one of the following steps to go back to the Basic screen 1 Press the Panel Reset key and Touch Exit...

Page 206: ...screen according to the type of vendor mounted on the copier Highlighted ON OFF Copies Made Copy Cycles No Count 11 17 A3 B4 11 17 Legal A3 11 17 B4 11 14 FLS Legal A6 Mode 1 1 count per 1 copy cycle normal mode Mode 2 Multiple count up according to paper size and 1 2 sided copying Mode 3 Multiple count up according to paper size and 1 2 sided copying Copying 1 Sided 2 Sided Manual Bypass Size Siz...

Page 207: ...alue given on the Adjust Mode Label on the inside of the Front Door 7 1 Adjust Menu Screen 1155SBS0702A 7 2 Adjust Function Tree 1155S012CA Adjust Printer Registration CD Registration FD Zoom FD Adjust Fusing C Input Image Density ATDC control IR Zoom CD Zoom FD Manual Scale FD Scale CD Exp Lamp Adjust Exp Lamp address EDH Zoom FD EDH Feed 2 Feed FD Feed CD S ADF Feed FD S ADF Feed CD Regist Loop ...

Page 208: ...ch Exit on the Tech Rep Mode screen Tech Rep Mode Adjust Printer Touch Panel Display Setting The default is Registration CD Adjust registration of the printer in the main scanning direction by changing the timing at which the laser beam strikes the PC Drum Note The press of the Start key causes the copier to output a test pattern using the paper source currently selected for use Registration FD Ad...

Page 209: ...Scale position in the FD direction scanning position Scale CD Set the correction value for the Original Width Scale position in the CD direction scanning position Exp Lamp Adjust Set the intensity regulating level of the Exposure Lamp Note This function is only for factory setting and should never be used in the field Exp Lamp address Set the starting address for light intensity monitoring Note Th...

Page 210: ...nal scanning position in the FD direc tion in the single feed mode S ADF Feed CD Set the correction value for the original scanning position in the CD direc tion in the single feed mode Regist Loop 1 Set the length of loop to be formed on the leading edge of the 1 sided orig inal before the Registration Roller of the EDH Regist Loop 2 Set the length of loop to be formed on the leading edge of the ...

Page 211: ...Di620 TROUBLESHOOTING ...

Page 212: ... Code T 36 1 C0000 Fusing Motor M3 s Failure to Turn T 36 C0010 PC Drum Drive Motor M2 s Failure to Turn 2 C0020 Paper Take Up Motor M21 s Failure to Turn T 38 C0040 Suction Fan Motor M14 s Failure to Turn C0042 Toner Suction Fan Motor M13 s Failure to Turn C0048 Hard Disk Drive Cooling Fan Motor 1 M34 s Failure to Turn Hard Disk Drive Cooling Fan Motor 2 M35 s Failure to Turn 3 C0049 PH Cooling F...

Page 213: ... Timing C14A0 Exposure Lamp Heater UN13 Failure during Warming up C14A1 Exposure Lamp Heater UN13 Failure Abnormally Low Temperature C14A2 Exposure Lamp Heater UN13 Failure Abnormally High Temperature C14A3 IR Warming up Failure 11 C0500 Warming up Failure T 54 C0510 Abnormally Low Fusing Temperature C0520 Abnormally High Fusing Temperature C0540 Fusing Roller Thermistor Loading Failure C0550 Hard...

Page 214: ... Failure to Turn ON T 72 19 C0F24 AIDC Sensor UN6 Contamination Correction Failure T 73 20 C0F32 ATDC Sensor UN4 Failure T 74 C0F33 Abnormally Low T C as Detected by ATDC Sensor UN4 C0F34 T C Recovery Failure as Detected by ATDC Sensor UN4 21 C10 C14 T 75 22 The Copier Does not Turn ON T 77 5 IMAGE FAILURE 5 1 Image Failure Troubleshooting T 78 5 2 Initial Checks T 78 5 3 Troubleshooting Procedure...

Page 215: ...ponent on a PWB or any other functional unit including a motor is defective the text only instructs you to replace the whole PWB or functional unit and does not give troubleshooting procedures applicable within the defective unit 2 All troubleshooting procedures contained herein assume that there are no breaks in the harnesses and cords and all connectors are plugged into the right positions 3 For...

Page 216: ... of the input port of the board IC with the copier in the standby state including a misfeed malfunction and closure failure condition allows the Tech Rep to determine whether signals are properly input to a controlled part 2 I O CHECK When a paper misfeed occurs in the paper take up section of the copier 1st Drawer Paper Take Up Sensor PC32 is considered to be responsible for it Procedure 1 Remove...

Page 217: ...02A 2 2 I O Check List I O Check Screens The following screens are only typical and the port data shown does not necessarily represent the actual one 1155T024CC 1155T021CC 1155T025CC 1155T022CC 1155T026CC 1155T023CC ...

Page 218: ...F PA2 PJ14F 2A PC41 Lift up 2nd Drawer Paper Lift Up Sensor At upper limit Not at upper limit IC1F PC0 PJ14F 8A PC49 Paper Empty 2nd Drawer Paper Empty Sensor Paper present Paper not present IC2F PA1 PJ14F 8B PC37 Leading Edge Vertical Transport Sensor 2 Paper present Paper not present IC2F PA3 PJ14F 5A PC26 Lift up Pulse 2nd Drawer Lift Up Motor Pulse Sensor Blocked Unblocked IC4A P232 PJ4A 13 UN...

Page 219: ... PC42 LCC Raised Posi tion 3rd Drawer Paper Lift Up Sensor At upper limit Not at upper limit IC2F PC0 PJ13F 8A PC20 Lowered Posi tion 3rd Drawer Lower Position Sensor At lower limit Not at lower limit IC4A P235 PJ4A 9 PC34 Take up 3rd Drawer Paper Take Up Sensor Paper present Paper not present IC2F PC1 PJ13F 2A PC50 Paper Empty 3rd Drawer Paper Empty Sensor Paper present Paper not present IC2F PC3...

Page 220: ...hen closed IC5A P300 PJ10A 12B S5 Turn Over Lower Left Door Interlock Switch When opened When closed IC5A P322 PJ8A 10A Finisher set Finisher Set Switch In position Out of position IC5A P301 PJ8A 4A S1 Power Switch Power Switch ON OFF IC5A P326 PJ6A 15A S6 Pre drive Off F Predrive OFF Front Switch Closed Open IC4A P205 PJ2A 8A PC5 Pre drive Off R Predrive OFF Rear Sensor Blocked Unblocked IC4A P22...

Page 221: ...a paper misfeed occurs the Touch Panel shows the corresponding message misfeed location and paper location 3 PAPER TRANSPORT FAILURE Blinking Misfeed location Lit Paper location 1155O632CA 1 2 3 4 5 7 6 8 9 12 10 11 13 15 19 14 21 18 20 16 17 ...

Page 222: ...p 1 10 2nd Drawer take up 1 11 3rd Drawer take up 1 12 Vertical transport lower right of copier 1 13 LCC See the relevant option service manual 14 Entrance to Non Sort Finisher Tray 15 Vertical transport through Finisher 16 Entrance to Elevator Tray 17 Paper Folding Unit 18 Exit to Non Sort Tray 19 Copy stack transport 20 Exit to Elevator Tray 21 Exit to Finisher Tray Misfeed in the copier Open th...

Page 223: ...PC36 1st Drawer Paper Take Up Sensor PC32 Manual Feed Paper Empty Sensor PC6 Transport Roller Sensor PC1 Paper Leading Edge Sensor PC2 Paper Exit Switch S10 Turnover Feed Entry Sensor PC11 Vertical Transport Sensor 3 PC38 2nd Drawer Paper Take Up Sensor PC33 Duplex Unit Horizontal Transport Jam Sensor PC56 Duplex Unit Horizontal Transport Entry Sensor PC13 Duplex Unit Horizontal Transport Sensor P...

Page 224: ...2 sec after 2nd Drawer Paper Take Up Sensor PC33 has been blocked L PC1 is not blocked L even after the lapse of approx 1 5 sec after 3rd Drawer Paper Take Up Sensor PC34 has been blocked L Type Detection Timing Bypass paper take up fail ure detection PC1 is not blocked L even after the lapse of approx 0 5 sec after Man ual Feed Paper Take Up Clutch CL1 has been energized after one paper take up r...

Page 225: ...ransport Roller Sensor PC1 PC1 is not blocked L even after the lapse of approx 2 5 sec after PC13 has been blocked L when the paper is stored into the Duplex Unit Leading edge detection by Turnover Exit Sensor PC14 PC14 is not blocked L even after the lapse of approx 0 9 sec after the paper which is to be turned over and fed out through the lower exit port has unblocked H PC11 Leading edge detecti...

Page 226: ...aper Take Up Clutch CL4 3rd Drawer Paper Take Up Clutch CL5 1st Drawer Paper Take Up Sensor PC32 2nd Drawer Paper Take Up Sensor PC33 3rd Drawer Paper Take Up Sensor PC34 Vertical Transport Motor M22 Vertical Transport Sensor 1 PC36 Vertical Transport Sensor 2 PC37 Vertical Transport Sensor 3 PC38 Master Board PWB A Drawer S P Board PWB F 1155C25TAA ...

Page 227: ...F and GND change from DC24V to DC0V when the Start key is pressed YES Change CL4 NO Change PWB F or PWB A 8 When the 3rd Drawer is use Check CL5 for operation Does the voltage across PJ13F 2B on PWB F and GND change from DC24V to DC0V when the Start key is pressed YES Change CL5 NO Change PWB F or PWB A Paper is at a stop in the verti cal transport section 1 Are the Vertical Transport Rollers defo...

Page 228: ...al Parts Transport Motor M23 Transport Roller Sensor PC1 Synchronizing Motor M5 Paper Leading Edge Sensor PC2 Separator Finger Solenoid SL4 Suction Fan Motor M14 Master Board PWB A Synchronizing Motor Control Board PWB T Drawer S P Board PWB F 1155C02TAA ...

Page 229: ...1 actuator for operation and if it is okay change PC1 Paper is at a stop at the Syn chronizing Roll ers 1 Are the Synchronizing Rollers deformed worn or dirty with paper dust YES Clean or change the Syn chronizing Rollers 2 Is a proper length of loop formed before the Synchronizing Rollers NO Select Tech Rep Tech Rep Choice Printer and Loop Adjustment in that order to make the loop adjustment 3 Do...

Page 230: ...C Drum Paper Separator Fin gers move smoothly when operated manually NO Change the separator fin gers 3 Is there a gap between the PC Drum Paper Separator Fingers and the sur face of the PC Drum when step 2 is performed again YES Adjust the position of the PC Drum Paper Separator Fin gers 4 Check SL4 for operation Does the voltage across PJ10A 8B on PWB A and GND change from DC24V to DC0V when the...

Page 231: ...lti Bypass Misfeed Relevant Electrical Parts Manual Feed Paper Take Up Clutch CL1 Manual Feed Paper Empty Sensor PC6 Manual Feed Paper Pressure Solenoid SL1 Master Board PWB A Power Supply Board PWB C 1155C03TAA ...

Page 232: ... Take Up Rolls deformed worn or dirty with paper dust YES Clean or change the Manual Feed Paper Take Up Rolls 5 Check CL1 for operation Does the voltage across PJ2A 2B on PWB A and GND change from DC24V to DC0V when the Start key is pressed after paper has been loaded on the Multi Bypass Table NO Change PWB A 6 Check SL1 for operation Does the voltage across PJ8A 2B on PWB A and GND change from DC...

Page 233: ...T 19 4 Fusing Exit Misfeed Relevant Electrical Parts Suction Fan Motor M14 Paper Exit Switch S10 Exit Duplex Switching Solenoid SL3 Master Board PWB A 1155C04TAB ...

Page 234: ...e the Fusing Rollers 2 Are the Fusing Roller Paper Separator Fingers deformed worn or dirty YES Clean correct or change the Paper Separator Fin gers 3 Is the Oil Roller dirty YES Clean or change the Oil Roller Paper is at a stop in the exit section 1 Are the Exit Duplex Switching Lever and Transport Guide Plate dirty or deformed YES Clean or change the defec tive lever and or guide plate 2 Check S...

Page 235: ...Duplex Unit Horizontal Transport Entry Sensor PC13 Turnover Exit Sensor PC14 Duplex Unit Turnover Exit Solenoid SL5 Duplex Unit Turnover Motor M6 Duplex Unit Horizontal Transport Jam Sensor PC56 Turnover Feed Jam Sensor PC57 Duplex Unit Paper Take Up Solenoid SL2 Master Board PWB A Duplex Unit Turnover Motor Control Board PWB Z 1155C05TAB ...

Page 236: ...ded copy cycle NO Check gears belts roller and proper engagement and check the gear coupling for torn pieces of paper 5 Is a torn piece of paper present on the paper path surface YES Remove the torn piece of paper 6 Is PC11 fully operational Make the input port check using I O Check YES Change PWB A NO Check the PC11 actuator for operation and if it is okay change PC11 Paper is at a stop in the tu...

Page 237: ...tep 7 has been checked NO Check the PC57 actuator for operation and if it is okay change PC57 The leading edge of the paper is at a stop in the hori zontal transport section of the Duplex Unit 1 Is the Paper Guide Sheet dirty or deformed YES Clean or change the guide sheet 2 Is PC13 fully operational Make the input port check using I O Check NO Check the PC13 actuator for operation and if it is ok...

Page 238: ...M E M O ...

Page 239: ...r with a technical representative call message Perform the following steps to reset malfunctions 4 MALFUNCTION Press the Trouble Reset Switch on Tech Rep Setting Switches Board PWB S for the fusing mal functions C05 Turn OFF and ON the Power Switch for the following malfunctions C1401 C1402 C1410 C1430 C1461 C1462 C1468 C1469 Open and close the Lower Front Door for any other malfunctions Malfuncti...

Page 240: ...gnal remains LOW for a continuous 1 5 sec or more period while M35 remains deenergized C0049 PH Cooling Fan Motor M19 s failure to turn The Lock signal remains HIGH for a continuous 1 5 sec or more period while M19 remains energized The Lock signal remains LOW for a continuous 1 5 sec or more period while M19 remains deenergized C004A PC Drum Cooling Fan Motor M17 s failure to turn The Lock signal...

Page 241: ...of 7 sec after M7 has started turning forward PC16 is not blocked L even after the lapse of 20 sec after M7 has started turning backward C0110 Image Transfer Paper Separator Wire Cleaning Motor M8 s failure to turn Faulty Transfer Separator Wire Cleaning Home Position Sensor PC17 PC17 is not unblocked H even after the lapse of 7 sec after M8 has started turning forward PC17 is not blocked L even a...

Page 242: ...ed warming up C14A3 IR warming up failure When the light intensity is adjusted A Temperature Under Control signal is not received from the engine within 195 sec after FL1 has turned ON Code Description Detection Timing C0500 Warming up failure defective Upper Fusing Roller Heater Lamp During warming up the surface temperature of the Upper Fusing Roller does not reach 90 C within 180 sec from room ...

Page 243: ...Inch Areas 2nd Drawer Paper Lift Up Sensor PC41 is not blocked L even after the lapse of 5 sec after 2nd Drawer Lift Up Motor M25 has started turning forward for upward motion PC41 is not blocked L even when 2nd Drawer Lift Up Motor Pulse Sensor PC26 detects 150 HIGH going and LOW going edges after M25 has started turning forward for upward motion 2nd Drawer Lower Position Sensor PC19 is not block...

Page 244: ...on 1st Drawer Lower Position Sensor PC18 is not blocked L even after the lapse of 5 sec after M24 has started turning backward for downward motion PC18 is not blocked L even when PC25 detects 150 HIGH going and LOW going edges after M24 has started turning backward for downward motion PC18 is not unblocked H even after the lapse of 1 5 sec after it has been blocked L while M24 is turning backward ...

Page 245: ...ed L even after the lapse of 3 sec after PC20 has been blocked L while M28 is turning backward for downward motion PC42 is not unblocked H even after 40 edges are counted after M28 has started turning backward for downward motion PC21 is not blocked L when PC20 is blocked L while M28 is turning forward for upward motion or backward for downward motion C0994 3rd Drawer Elevator Motor M28 s failure ...

Page 246: ...even after the lapse of 10 sec after a return motion has been started PC23 is not unblocked H even when 40 edges are counted after M29 has started turning backward for leftward motion C099C 3rd Drawer Shift Motor M29 s fail ure to turn PC30 detects no HIGH going or LOW going edges even after the lapse of 500 msec after M29 has started turn ing forward for rightward motion or backward for left ward...

Page 247: ...ail ure to turn See the option service manual C0B49 Copy Set Clamp Motor 1 M3 s fail ure to turn C0B4A Copy Set Clamp Motor 2 M4 s fail ure to turn C0B4B Copy Set Clamp Motor 2 M4 s fail ure to turn C0B4F FD Stopper Motor M13 s failure to turn Code Description Detection Timing C0B50 Stapling Motor M15 s failure to turn See the option service manual C0B51 Stapling Motor M15 s failure to turn Code D...

Page 248: ... for a con tinuous 1 sec period while LA1 remains ON Code Description Detection Timing C0F24 AIDC Sensor UN6 contamination correction failure The UN6 output voltage does not fall within the range of 0 9V to 1 1V even after the contamination correction and variation adjustment C0F32 ATDC Sensor UN4 failure The UN4 output voltage remains 0 2V or less or 4 5V or more for a continuous 3 sec period aft...

Page 249: ...ived for 1 sided copies to be taken up from the Duplex Unit C133B Normal communication data not received from FN for 250 msec Normal communication data is not received from the FN for 250 msec C13F0 400 dpi SOS detection failure An SOS signal is not detected even after the lapse of a given period of time 5 to 5 8 sec after Polygon Motor M4 has been energized at 400 dpi Either an ST21 signal or ST2...

Page 250: ...er full C142A Communications error 4 transmission hard error C1430 H Sync fault C143E Pick Up Motor malfunction EDH C1440 Gain adjustment failure C1441 CCD failure clamp adjustment failure C1450 Sequence trouble timeout C1461 Serial GA1 fault C1462 Serial GA2 fault C1468 Hardware trouble EEPROM 1 C1469 Hardware trouble EEPROM 2 C1470 Module to module communication CCM EVM C1471 Module to module co...

Page 251: ...n the Touch Panel reset the malfunction and then start the relevant troubleshooting procedure 1 C0000 Fusing Motor M3 s Failure to Turn C0010 PC Drum Drive Motor M2 s Failure to Turn Relevant Electrical Parts Fusing Motor M3 PC Drum Drive Motor M2 Master Board PWB A Power Supply Board PWB C 1155C06TAA ...

Page 252: ...oltage across PJ7C 6B on PWB C and GND DC24V YES Change PWB A or M3 NO Change PWB C Step Check Item Result Action 1 Check M2 for operation Does the voltage across PJ7A 2A on PWB A and GND change from DC5V to DC0V when the Start key is pressed NO Change PWB A 2 Does the voltage across PJ7A 9A on PWB A and GND change from DC5V to DC0V when the Start key is pressed NO Check gears for overload and if ...

Page 253: ...C0048 Hard Disk Drive Cooling Fan Motor 1 M34 s Failure to Turn Hard Disk Drive Cooling Fan Motor 2 M35 s Failure to Turn Relevant Electrical Parts Paper Take Up Motor M21 Suction Fan Motor M14 Toner Suction Fan Motor M13 Hard Disk Drive Cooling Fan Motor 1 M34 Hard Disk Drive Cooling Fan Motor 2 M35 Master Board PWB A Drawer S P Board PWB F 1155C07TAB ...

Page 254: ...if they are okay change M14 Step Check Item Result Action 1 Check M13 for operation Does the voltage across PJ2A 3B on PWB A and GND change from DC0V to DC24V when the Start key is pressed NO Change PWB A 2 Does the voltage across PJ2A 5B on PWB A and GND change from DC5V to DC0V when the Start key is pressed YES Change PWB A NO Check gears for overload and if they are okay change M13 Step Check I...

Page 255: ...g Fan Motor M19 s Failure to Turn C004A PC Drum Cooling Fan Motor M17 s Failure to Turn Relevant Electrical Parts PC Drum Cooling Fan Motor M17 PH Cooling Fan Motor M19 Master Board PWB A Power Supply Board PWB C 1155C11TAB ...

Page 256: ...0V when the Start key is pressed YES Change PWB A NO Check gears for overload and if they are okay change M19 Step Check Item Result Action 1 Check M17 for operation Does the voltage across PJ10A 6B on PWB A and GND change from DC0V to DC24V when the malfunction is reset NO Change PWB A 2 Does the voltage across PJ10A 4B on PWB A and GND change from DC5V to DC0V when the malfunction is reset YES C...

Page 257: ...Fan Motor M32 s Failure To Turn C004C Ozone Ventilation Fan Motor M12 s Failure to Turn Relevant Electrical Parts Ozone Ventilation Fan Motor M12 CCD Cooling Fan Motor M32 Master Board PWB A Power Supply Board PWB C 1155C08TAB ...

Page 258: ...when the malfunction is reset YES Change PWB A NO Check gears for overload and if they are okay change M17 Step Check Item Result Action 1 Check M12 for operation Does the voltage across PJ10A 7B on PWB A and GND change from about DC16V to DC24V when the Start key is pressed NO Change PWB A 2 Does the voltage across PJ10A 5B on PWB A and GND change from DC5V to DC0V when the malfunction is reset Y...

Page 259: ...ly Unit Cooling Fan Motor 1 M15 s Failure to Turn Power Supply Unit Cooling Fan Motor 2 M16 s Failure to Turn Relevant Electrical Parts Power Supply Unit Cooling Fan Motor 3 M18 Power Supply Unit Cooling Fan Motor 2 M16 Power Supply Unit Cooling Fan Motor 1 M15 Master Board PWB A 1155C32TAB ...

Page 260: ...operation Does the voltage across PJ2A 6B on PWB A and GND change from DC0V to DC24V when the Start key is pressed NO Change PWB A 2 Does the voltage across PJ2A 8B on PWB A and GND change from DC5V to DC0V when the Start key is pressed NO Check gears for overload and if they are okay change M15 3 Check M16 for operation Does the voltage across PJ2A 9B on PWB A and GND change from DC0V to DC24V wh...

Page 261: ...er Front Door Does the Toner Bottle turn at this time NO Check for overloads and then check step 4 2 Does the voltage across PJ2A 10A on PWB A and GND change from DC24V to DC0V when step 1 is performed once again NO Change PWB A 3 Does the voltage across PJ30 3 and PJ30 4 on PWB O change from 0V to AC12V when step 1 is performed once again NO Change PWB O 4 Is PC41 fully operational Does the volta...

Page 262: ... M1 for operation Does the voltage across PJ7A 5A on PWB A and GND change from DC5V to DC0V when the Start key is pressed NO Change PWB A 2 Does the voltage across PJ7A 7A on PWB A and GND change from DC5V to DC0V when the Start key is pressed NO Check gears for overload and if they are okay change M1 3 Is the voltage across PJ7C 4B on PWB C and GND DC24V YES Change PWB A or M1 NO Change PWB C 115...

Page 263: ...r M8 s Failure to Turn Defective Transfer Separator Wire Cleaning Home Position Sensor PC17 Relevant Electrical Parts PC Drum Charge Comb Cleaning Motor M7 Drum Comb Cleaning Home Position Sensor PC16 Image Transfer Paper Separator Wire Cleaning Motor M8 Transfer Separator Wire Cleaning Home Position Sensor PC17 Master Board PWB A Wire Cleaning Motor Drive Board PWB P 1155C12TAA ...

Page 264: ...urned ON and then change to DC0V YES Change PWB P or M7 NO Change PWB A Step Check Item Result Action 1 Check the I O Check screen to see if PC17 is operational Manually turn the screw shaft to bring the cleaner to its home position Is the Clean Trance input signal 1 when the Trans port Tray is slid into the copier and the M4 lock lever is raised Is the input signal 0 when the Transport Tray is sl...

Page 265: ...ransfer Corona Leak Detected C0220 Developing Bias Leak Detected C0230 Paper Separator Corona Leak Detected Relevant Electrical Parts PC Drum Charge Developing Bias HV HV1 Image Transfer Paper Separator HV HV2 Master Board PWB A Power Supply Board PWB C 1155C13TAA ...

Page 266: ...e Image Transfer Paper Separator Coronas Unit installed properly NO Install the Image Transfer Paper Separa tor Coronas Unit properly 2 Are the Image Transfer Paper Separator Coronas wires dirty or have they snapped YES Clean or change the corona wires 3 Is C0210 or C0230 shown even when PJ1HV2 is unplugged from HV2 YES Change PWB A NO Change HV2 Step Check Item Result Action 1 Is the developing b...

Page 267: ...er UN13 Failure Abnormally Low Temperature C14A2 Exposure Lamp Heater UN13 Failure Abnormally High Temperature C14A3 IR Warming up Failure Relevant Electrical Parts Exposure Lamp FL1 Exposure Lamp Inverter Board UN10 Exposure Lamp Holder UN11 Exposure Lamp Heater UN13 Master Board PWB A Power Supply Board PWB C Image Processing Board PWB IB Lamp Flexible Printed Circuit PWB IE 1155C14TAB ...

Page 268: ...h to the CCD for possible obstruction 4 Does NG appear when Scanning Check of Function I R under I R EDH Check available from the Tech Rep mode is run YES Change PWB IB or UN10 5 Is the voltage across PJ9C 7B on PWB C and GND DC24V YES Change PWB A NO Change PWB C Step Check Item Result Action 1 Is the resistance across PJ3UN10 1 and PJ3UN10 2 on UN10 about 30 ohms NO Change UN13 or PWB IE 2 Does ...

Page 269: ...Lamp H1 Lower Fusing Roller Heater Lamp H2 Upper Fusing Roller Thermistor TH1 Lower Fusing Roller Thermistor TH2 Upper Fusing Roller Thermal Fuse TF1 Lower Fusing Roller Thermal Fuse TF2 Upper Guide Plate Resistor R1 Lower Guide Plate Resistor R2 Upper Fusing Heater Lamp SSR1 SSR1 Lower Fusing Heater Lamp SSR2 SSR2 Upper Fusing Heater Lamp SSR3 SSR3 Lower Fusing Heater Lamp SSR4 SSR4 Main Relay RY...

Page 270: ...Heater Lamp H2 Upper Fusing Roller Thermistor TH1 Lower Fusing Roller Thermistor TH2 Upper Fusing Roller Thermal Fuse TF1 Lower Fusing Roller Thermal Fuse TF2 Upper Fusing Heater Lamp SSR1 SSR1 Lower Fusing Heater Lamp SSR2 SSR2 Main Relay RY1 Master Board PWB A Power Supply Board PWB C 1155C27TAB ...

Page 271: ...t end Is the measurement infinity YES Change TH1 6 Measure the resistance of TH2 across CN32 2 and 3 on the Fusing Unit end Is the measurement infinity YES Change TH2 7 Does the voltage across PJ8A 3B on PWB A and GND change from DC5V to DC0V when the Power Switch is turned ON NO Change PWB A 8 Does the voltage across PJ8A 4B on PWB A and GND change from DC5V to DC0V when step 2 is performed again...

Page 272: ...hange PWB A 4 Unplug CN69 8P Is the circuit across CN69 1 and 2 on the Fusing Unit end closed YES Change TH1 5 Unplug CN69 8P Is the circuit across CN69 5 and 6 on the Fusing Unit end closed YES Change TH2 6 Is the voltage across PJ4C 3A on PWB C and GND and across PJ4C 2A on PWB C and GND DC5V YES Change PWB A NO Change PWB C Step Check Item Result Action 1 Check the Thermistor Set signal Does th...

Page 273: ...ner Motor M31 Malfunction C0602 Cable Unwound C0650 SHOME Signal Error Relevant Electrical Parts Scanner Motor M31 Scanner Reference Position Sensor PC55 Digital Image Processing Board PWB IB SCP Board PWB IC 1155C16TAA ...

Page 274: ...cross PJ1IC 11 on PWB IC and GND change from DC5V to DC0V when the malfunction is reset NO Check gears and belts for overload and if they are okay change M31 or PWB IC 4 Is the voltage across PJ3IC 6 on PWB IC and GND DC5V NO Change PWB IC 5 Is PJ9IB plugged properly into PWB IB and PJ14 into PC55 NO Plug them in properly 6 Does the voltage across PJ9IB 2A on PWB IB and GND change to DC0V when PC5...

Page 275: ...Failure Inch Areas C0914 2nd Drawer Lift Up Motor M25 s Failure to Turn Metric Areas Relevant Electrical Parts 2nd Drawer Lift Up Motor M25 2nd Drawer Paper Lift Up Sensor PC41 2nd Drawer Lift Up Motor Pulse Sensor PC26 Master Board PWB A Drawer S P Board PWB F 1155C28TAA ...

Page 276: ...Up Motor M25 2nd Drawer Paper Lift Up Sensor PC41 2nd Drawer Lift Up Motor Pulse Sensor PC26 2nd Drawer Paper Descent Key UN8 2nd Drawer Lower Position Sensor PC19 Master Board PWB A Drawer S P Board PWB F 2nd Drawer Flexible Printed Circuit PWB M2 1155C29TAA ...

Page 277: ...k the PC41 actuator and if it is okay change PC41 Step Check Item Result Action 1 Does M25 start turning when the 2nd Drawer is slid into the copier and UN8 turned ON NO Check for overloads and then check step 3 and onward 2 Does the voltage across PJ6F 6 on PWB F and GND change from DC0V to DC24V when step 1 is performed again YES Check gears for overload and if they are okay change PWB M2 or M25...

Page 278: ...Failure Inch Areas C0924 1st Drawer Lift Up Motor M24 s Failure to Turn Metric Areas Relevant Electrical Parts 1st Drawer Lift Up Motor M24 1st Drawer Paper Lift Up Sensor PC40 1st Drawer Lift Up Motor Pulse Sensor PC25 Master Board PWB A Drawer S P Board PWB F 1155C30TAB ...

Page 279: ...Up Motor M24 1st Drawer Paper Lift Up Sensor PC40 1st Drawer Lift Up Motor Pulse Sensor PC25 1st Drawer Paper Descent Key UN7 1st Drawer Lower Position Sensor PC18 Master Board PWB A Drawer S P Board PWB F 1st Drawer Flexible Printed Circuit PWB M1 1155C31TAA ...

Page 280: ...k the PC40 actuator and if it is okay change PC40 Step Check Item Result Action 1 Does M24 start turning when the 1st Drawer is slid into the copier and UN7 turned ON NO Check for overloads and then check step 3 and onward 2 Does the voltage across PJ6F 1 on PWB F and GND change from DC0V to DC24V when step 1 is performed again YES Check gears for overload and if they are okay change PWB M1 or M24...

Page 281: ...s 3rd Drawer Paper Lift Up Sensor PC42 3rd Drawer Paper Empty Sensor PC50 3rd Drawer Lower Position Sensor PC20 3rd Drawer Overrun Detecting Sensor PC21 3rd Drawer Elevator Motor M28 3rd Drawer Elevator Motor Pulse Sensor PC29 Master Board PWB A Drawer S P Board PWB F 3rd Drawer Flexible Printed Circuit PWB H 1155C19TAB ...

Page 282: ... Change PWB A or PWB F NO Check the PC21 actuator for operation and if it is okay change PC21 or PWB H Step Check Item Result Action 1 Does M28 start turning when 3rd Drawer Paper Descent Key UN9 is pressed with the 3rd Drawer slid into the copier NO Check for overloads and then check step 3 2 Does the voltage across PJ5F 6 during ascent or 7 during descent on PWB F and GND change from DC0V to DC2...

Page 283: ...Drawer Shift Gate Motion Failure Relevant Electrical Parts 3rd Drawer Lock Solenoid SL6 3rd Drawer Shift Gate Position Sensor PC52 3rd Drawer Shift Gate Motor M30 Master Board PWB A Drawer S P Board PWB F 3rd Drawer Flexible Printed Circuit PWB H 1155C20TAA ...

Page 284: ...1 Load paper only in the Shift Tray and slide the 3rd Drawer into the copier Does M30 start turning at this time NO Check for overloads and then check step 3 2 Does the voltage across PJ5F 2 on PWB F and GND change from LOW to HIGH when step 1 is performed again YES Check gears for overload and if they are okay change M30 or PWB H NO Change PWB A or PWB F 3 Is PC52 fully operational Make the input...

Page 285: ... Turn Relevant Electrical Parts 3rd Drawer Shifter Return Position Sensor PC23 3rd Drawer Shifter Home Position Sensor PC22 3rd Drawer Shift Motor M29 3rd Drawer Shift Motor Pulse Sensor PC30 Master Board PWB A Drawer S P Board PWB F 3rd Drawer Flexible Printed Circuit PWB H 1155C21TAA ...

Page 286: ...m Result Action 1 Load paper only in the Shift Tray and slide the 3rd Drawer into the copier Does M29 start turning at this time NO Check for overloads 2 Does the voltage across PJ5F 4 5 on PWB F and GND change from DC0V to DC24V when step 1 is performed again YES Check gears for overload and if they are okay change M29 or PWB H NO Change PWB A or PWB F 3 Check PC30 for operation Does the voltage ...

Page 287: ...ster Board PWB A Step Check Item Result Action 1 Does the voltage across PJ10A 10B on PWB A and GND change from DC24V to DC0V when the Start key is pressed NO Change PWB A 2 Is the voltage across PJ10A 10B on PWB A and GND DC24V while the copier is in the standby state YES Change LA1 NO Change PWB A 1155C22TAA ...

Page 288: ... Sensor UN6 Master Board PWB A Step Check Item Result Action 1 Are PJ10A CN27 CN21 and CN64 plugged securely into PWB A NO Plug them in securely 2 Is the photosensor LED of the AIDC Sen sor contaminated YES Clean UN6 and run the F5 operation NO Change UN6 or PWB A and run the F5 operation 1155C23TAA ...

Page 289: ...t Electrical Parts ATDC Sensor UN4 Master Board PWB A Step Check Item Result Action 1 Are PJ8A and CN23 plugged securely into PWB A NO Plug them in securely 2 Does the voltage across PJ8A 10B on PWB A and GND fall within the range of DC0 2V to DC4 5V during a copy cycle YES Change PWB A NO Change UN4 and developer and then run the F8 and F5 operations in that order 1155C24TAB ...

Page 290: ...the harness is intact change the board C133B Check cables for proper connection and if they are okay change the Finisher CPU board C13F0 C13F1 Reset the malfunction and turn OFF and ON the Power Switch If the same malfunction is still detected check the PWB J connector and if it is okay change either the PH Unit PWB J or PWB A C13F2 C13F3 Check the Trailing Edge Stop and Edge Guide mechanism and h...

Page 291: ...B C1461 Reset the malfunction i e turn OFF and ON the Power Switch If the same malfunction is still detected change PWB IB C1462 Reset the malfunction i e turn OFF and ON the Power Switch If the same malfunction is still detected check the EDH harness and if it is okay change PWB IB C1468 Reset the malfunction i e turn OFF and ON the Power Switch If the same malfunction is still detected change PW...

Page 292: ...not turn ON 1 Is there an AC power supply voltage across PJ1PU 1 and 3 on PU1 NO Check the circuit breaker and power supply voltage If they are okay change PWB D 2 Is the voltage across PJ2PU 1 2 3 on PU1 and GND DC24V NO Check the fuse on PU1 and if it is intact change PU1 3 Is the voltage across PJ11C 4 on PWB C and GND DC24V when S1 is OFF NO Change PWB C 4 Is the voltage across PJ11C 2 3 on PW...

Page 293: ...s or replace a scratched one 4 Adjust data and Level History data Do the values set for Adjust and Level History fall within the specified ranges 5 PM parts supplies Have the PM parts supplies such as the PC Drum Cleaning Blade and others that affect image quality reached the end of the their cleaning replacement cycles 6 Adjustment items registration focus etc Among the adjustment items given in ...

Page 294: ...e Samples 1 Blank copy 1155T001AA 2 Black copy 3 Low image density 4 Foggy background 5 Black streaks or bands 6 Black spots 7 Blank streaks or bands 8 Void areas 9 Smear on back 10 Uneven image density 11 Gradation reproduction failure 12 Rough image 13 Periodically uneven image ...

Page 295: ...echanism to the Developing Unit in good condition NO Check and change any defective part 7 Is the Image Transfer Corona wire installed correctly NO Install it properly 8 Is the wiring between Image Transfer Paper Separator HV HV2 and Image Transfer Corona normal NO Correct the wiring 9 Is the paper guide shorted to the frame YES Change HV1 or HV2 NO Close the circuit properly IR 1 Are the mirrors ...

Page 296: ...pear when I R Mem Prn is then run YES Change PWB B Section Step Check Item Result Action Engine 1 Is the PC Drum properly grounded NO Clean or change the PC Drum ground plate 2 Are the Comb Electrode and grid mesh nor mal NO Check and change if nec essary 3 Is the wiring between PC Drum Charge Developing Bias HV HV1 and PC Drum Charge Corona normal NO Correct the wiring 4 Is the Image Transfer Cor...

Page 297: ...Sleeve Roller seriously contaminated YES Clean the Sleeve Roller 4 Is the developing bias contact normal NO Clean or change the devel oping bias contact 5 Is the Main Erase Lamp dirty YES Clean the Main Erase Lamp 6 Select Tech Rep Mode Tech Rep Choice and Printer change the value for VG Adjust to a smaller one on the end and make a copy Does foggy background occur on the copy NO This completes th...

Page 298: ...y in that order Does NG appear when I R Mem Prn is then run YES Change PWB B Section Step Check Item Result Action Engine 1 Is the PC Drum surface dirty with foreign mat ter YES Clean or change the PC Drum 2 Are the PC Drum Paper Separator Fingers dirty with foreign matter YES Clean or change the sepa rator fingers 3 Is the Upper Fusing Roller dirty with foreign matter YES Clean or change the Fus ...

Page 299: ...lean or change the Upper Paper Separator Fingers 9 Is the Db plugged with caked toner or foreign matter YES Remove foreign matter Change the developer 10 Is the window on the underside of the PH dirty YES Clean the window 11 Is the light path between PH to PC Drum dirty with dust YES Remove the dust Memory 1 Select Tech Rep Mode Function and Image Memory in that order Does NG appear when Input Ima...

Page 300: ...when Input Image is then run YES Change PWB B 2 Select Tech Rep Mode Function and Image Memory in that order Does NG appear when I R Mem Prn is then run YES Change PWB B Section Step Check Item Result Action Engine 1 Are the Suction Belts dirty YES Clean them and check the Developing Unit 2 Is the Image Transfer Corona dirty YES Clean it and check the Developing Unit 3 Is the Pre Image Transfer Gu...

Page 301: ...the frame NO Close the circuit properly 6 Is the image improved by loading new paper YES Change the copy paper and instruct the user in how to store paper IR 1 Are the Original Glass mirrors and lens dirty with foreign matter YES Clean the Original Glass mirrors and lens 2 Is the Shading Sheet dirty YES Clean the sheet 3 Is the Exposure Lamp dirty or deteriorated YES Clean or change the Expo sure ...

Page 302: ... selected from Tech Rep Choice of Tech Rep Mode 5 Are the PJs and connectors plugged securely into PWB B and PWB J YES Change PWB B or PWB J NO Plug them in securely Section Step Check Item Result Action Engine 1 Has the developer PM counter reached near 40K YES Change the developer 2 Are the Developing Unit and Db plugged with foreign matter or caked toner YES Remove foreign matter and caked tone...

Page 303: ...ter YES Clean or change the defec tive gear 8 Is the PH Assy installed securely YES Change PWB J or PH Assy NO Install the PH Assy securely 9 Is the PC Unit installed all the way into the copier NO Slide the PC Unit all the way into the copier 10 Do the bearing bushings on the PC Drum shaft turn smoothly NO Change the bearing bush ings IR 1 Are the Scanner Motor drive gears cracked or dirty with f...

Page 304: ...Di620 DIS REASSEMBLY ADJUSTMENT ...

Page 305: ...Be sure to take necessary action Before attempting to disassemble the machine be sure to unplug its power cord The machine contains a high voltage unit and a circuit with a large current capacity that may cause an electric shock or burn from sparking The machine also contains quick moving parts which could injure a person If the machine uses a laser a person can lose his her eyesight by a laser be...

Page 306: ...ng this part or other parts near it When the machine is energized with any of its covers removed never use a flammable spray near it as a fire can result Make sure that correct screws diameter and length of the screw binding tapping screws are used in the correct places when assembling parts If a wrong screw is used a short insulating distance could result It could also result in collapsed threads...

Page 307: ...5 6 Removal of the Lift Up Motor Metric areas only D 16 7 Removal of the Synchronizing Rollers Unit D 17 8 Disassembly of the Synchronizing Rollers Unit D 18 9 Cleaning of the Upper Transport Roller Upper Synchronizing Roller D 21 10 Cleaning of the Lower Transport Roller Lower Synchronizing Roller D 21 11 Cleaning of the Paper Dust Remover D 21 12 Removal of the Suction Belts D 22 13 Disassembly ...

Page 308: ...Seal AIDC Sensor and PC Drum Paper Separator Fingers D 43 9 Disassembly of the PC Drum Paper Separator Fingers Assy D 43 10 Cleaning of the AIDC Sensor D 44 11 Replacement of the Toner Antispill Seal D 44 12 Replacement of the Cleaning Blade D 45 13 Replacement of the PC Ground Plate D 46 14 Replacement of the Ozone Filters D 46 15 Replacement of the Toner Collecting Bottle D 47 2 6 PC DRUM CHARGE...

Page 309: ...aning and Replacement of the Upper Paper Separator Fingers D 61 4 Replacement of the Lower Paper Separator Fingers D 61 5 Cleaning and Replacement of the Pre Fusing Guide Plate D 61 6 Cleaning and Replacement of the Upper Fusing Roller Thermistor D 62 7 Cleaning and Replacement of the Lower Fusing Roller D 62 8 Replacement of the Web Roller D 63 9 Replacement of the Web Pressure Roller D 63 10 Cle...

Page 310: ...Timing Belt D 75 3 6 SOLENOID POSITION ADJUSTMENT D 76 1 Adjustment of Manual Feed Paper Pick Up Solenoid Position D 76 2 Adjustment of the Duplex Unit Paper Take Up Solenoid Position D 77 3 Adjustment of the Exit Duplex Switching Solenoid Position D 78 4 Positioning of the PC Drum Paper Separator Fingers Separator Finger Solenoid D 79 5 Adjustment of the Duplex Unit Turnover Exit Solenoid Positio...

Page 311: ... Loop Adjustment D 98 15 γ Table D 100 16 Erasure Width D 102 17 Zoom CD D 104 18 Zoom FD D 106 19 Scale CD D 108 20 Scale FD D 110 21 Focus Positioning of the Scanner and 2nd 3rd Mirrors Carriage D 112 22 2nd 3rd Mirrors Carriage Height Adjustment D 113 INSTALLATION OF THE PLUG IN COUNTER OPTION MOUNTING BRACKET D 115 4 MISCELLANEOUS ...

Page 312: ...ctrostatic destruction Use a blower brush and cloth If a unit containing these sensors is to be cleaned first remove the sensors from the unit When handling the PWBs with MOS ICs observe Instructions for Handling the PWBs with MOS ICs When handling the PC Drum observe precautions given in Handling of the PC Drum Note that replacement of a PWB may call for readjustments or resetting of particular i...

Page 313: ...e off your watch and ring and wear laser protective goggles A highly reflective tool can be dangerous if it is brought into the laser beam path Use utmost care when handling tools on the user s premises The printerhead is not maintainable in the field It is to be replaced as an assembly including the con trol board Never therefore attempt to remove the laser diode or adjust trimmers on the control...

Page 314: ...ard make sure that the power cord has been unplugged from the power outlet During Inspection Avoid checking the IC directly with a multimeter use connectors on the Board Never create a closed circuit across IC pins with a metal tool When it is absolutely necessary to touch the ICs and other electrical components on the PW Board be sure to ground your body 1151SBD0103A 1 3 HANDLING OF THE PC DRUM D...

Page 315: ...is evident on the face of the Pad after wiping 1076D003 3 Soak a small amount of either ethyl alcohol or isopropyl alcohol into a clean unused dust free cotton pad which has been folded over into quarters Now wipe the surface of the PC Drum in one continuous movement from its rear edge to its front edge and off its surface one to two times Never move the pad back and forth 1076D004 4 Using the SAM...

Page 316: ...at the assembly or unit secured can only be adjusted or set at the factory and shall not be readjusted set or removed in the field Note that when two or more screws are used on the part in question only one representative screw may be marked with red paint Purpose of Application of Red Paint Do not turn the variable resistors on boards for which no adjusting instructions are given in ADJUSTMENT 11...

Page 317: ...D 6 2 1 DOORS COVERS AND EXTERIOR PARTS IDENTIFICATION AND REMOVAL PROCEDURES 2 1155D003AB 1155D002AB 1 17 16 14 13 12 11 10 9 8 7 6 5 4 3 18 19 20 21 22 23 24 25 15 2 DISASSEMBLY REASSEMBLY ...

Page 318: ...g three connectors Remove one ground wire mounting screw Open the Right Door and pull it up 12 Right Front Cover Swing down No 1 Remove two screws that secure the Right Front Cover 13 Front Right Cover Slide out all paper drawers Remove two screws that secure the Front Right Cover 14 3rd Drawer See p D 25 15 2nd Drawer Slide out the drawer and then lifting it slightly up pull it out of posi tion 1...

Page 319: ...r screws at the right and left and one at the front illustrated below 4 Loosen the two screws marked with raise the control panel unplug two connectors and one ground wire connector and then remove the Control Panel Unit To remove only the control panel loosen two screws marked with raise the control panel unplug two connectors and one ground wire connector A A 1155D004AC A A ...

Page 320: ... removal pro cedures The removal procedures given in the following omit the removal of connectors and screws securing the circuit board support or circuit board Where it is absolutely necessary to touch the ICs and other electrical components on the board be sure to ground your body PWB IA PWB J PWB IC UN10 PWB IB UN1 UN6 UN4 PWB P UN5 PWB S PWB T PWB Y PWB A PWB C PWB D PU1 PWB P HV2 PWB W PWB B ...

Page 321: ...ge Transfer Paper Separator Slide out the Transport Tray Assy Remove the Transport Unit cover Remove the Fusing Unit front cover PWB S Tech Rep Setting Switches Board Swing down No 2 Remove the control panel lower cover assy PWB T Synchronizing Motor Control Board Remove No 25 PWB W ECC Board Remove No 8 9 Remove the IR Unit fixing bracket Remove the Memory Board cover PWB Y RAM Board Remove No 25...

Page 322: ...ight Door Multi Bypass Unit 2 Slide out the drawer 3 Remove one screw and the harness cover 4 Remove the locking wiring saddle 5 Unplug connectors from Drawer S P Board PWB F 6 Remove four screws and slide the Paper Take Up Unit in the direction shown in the illustration 1075D008AB 1075D009AB ...

Page 323: ...5D199AA 3 Remove three screws and the Paper Take Up Clutch mounting bracket 4 Remove the bushing and Paper Take Up Clutch Assy 1075D200AB 5 Remove the E ring and Paper Take Up Clutch 1075D201AB When reinstalling the Paper Take Up Clutch secure it in position with the protrusion of the clutch aligned with the cutout in the mounting bracket NOTE ...

Page 324: ... ends and the Guide Plate 4 Remove two shoulder screws of the Paper Separator Roll Assy 5 Remove one C clip and slide the Paper Separator Roll Assy off in the direction shown 1075D010AA 1 Open the Right Door 2 Remove two screws and the Paper Separator Unit 1155D005AA 1075D012AA 6 Remove two screws and the Paper Guide Plate ...

Page 325: ...ll and Feed Roll 1075D013AA 7 Remove the C clip and slide the bushing to the side 8 Slide the coupling to the left and remove the Paper Take Up Roll Assy 1075D014AB 1075D015AB When reinstalling the Paper Take Up Roll Assy place it horizontally by holding down the torsion spring NOTE ...

Page 326: ... two bearings 4 Remove the Vertical Transport Roller white by sliding it in the direction shown 5 Loosen two screws on the Paper Guide Plate and remove the Vertical Transport Roller black by sliding it in the direction shown 1075D016AA 1 Open the Right Door 2 Using a soft cloth dampened with alcohol wipe clean each Vertical Transport Roller 1155D006AA 1155D007AA When the Vertical Transport Rollers...

Page 327: ...r Replenishing Motor Control Board and the Drawer S P Board 1075D018AB 4 Remove the Toner Collecting Bottle Remove two screws unplug one connector and remove the metal plate 5 Remove four screws to free the Vertical Transport Motor Assy 1075D019AB 6 Remove five screws Slightly raising the Paper Take Up Drive Assy remove it together with the Vertical Transport Motor Assy 1075D020AA 7 Unplug two con...

Page 328: ... Lower Door 2 Lower Lever M4 and slide out the Transport Tray Assy 3 Remove Misfeed Clearing Knob M3 4 Remove one screw and Lever M4 5 Remove three screws and the Transport Unit cover 1155D010AB 6 Unplug two connectors remove four screws and remove the Synchronizing Roller Unit ...

Page 329: ...55D011AA 1 Remove the Synchronizing Rollers Unit 2 Unhook the springs from the front and rear ends of the Misfeed Clearing Guide Plate 1 Different types of pressure springs are used for the Transport Roller and Synchronizing Roller Do not confuse them at reinstallation 2 When the Transport Roller and Synchronizing Roller have been removed perform Loop Adjustment and Zoom FD Adjust NOTES 1155D012AB...

Page 330: ... Plate 6 Remove four screws and the Pre Transport Rollers Guide Plate 7 Pull out the joint and remove the cover 8 Remove the two E rings and pull out the bushing for the Lower Transport Roller 9 Remove the Misfeed Removal Knob gear and one E ring 1155D014AB 1155D015AB ...

Page 331: ...age Transfer Guide Plate 11 Snap off one E ring and remove the bushing from the Lower Synchronizing Roller 12 Remove the Lower Transport Roller by sliding it in the direction shown 13 Remove the Lower Synchronizing Roller by sliding it in the direction shown 1155D016AB 1155D017AB ...

Page 332: ...nsport Roller Unit 2 Using a brush or soft cloth clean the Upper Transport Roller Upper Synchronizing Roller 1155D019AB 1 Remove the Transport Rollers Unit 2 Remove the Paper Dust Remover Synchronizing Roller Front Guide Plate and Transport Roller Front Guide Plate 3 Using a brush or soft cloth clean the Lower Transport Roller Lower Synchronizing Roller 1155D020AB Using a brush clean the Paper Dus...

Page 333: ...ve three screws and the Transport Unit cover 6 Remove four screws and the Suction Unit At reinstallation press the Suction Unit against the Suction Base Plate Ensure that the bearing is properly aligned with the radius in the side plate NOTE 1155D021AB 1155D022AA 7 Remove the front and rear terminals Free the Suction Belts Driven Roller from the Suction Deck Frame to remove the Suction Belts ...

Page 334: ...Multi Bypass Unit 2 Remove the three screws shown and the Multi Bypass Unit 1155D023AB 1075D032AA 3 Loosen two screws slide the pivot shaft to the side and remove the Multi Bypass Table 1075D038AA 4 Remove two screws and the Manual Feed Paper Pick Up Solenoid Assy Cover ...

Page 335: ... two connectors and remove the Manual Feed Paper Pick Up Solenoid Assy 6 Remove the Paper Take Up Roll Assy by removing the two C clips gear and bushings shown 7 Disassemble the Paper Take Up Roll Assy 1075D039AA 1155D024AA 1075D037AA ...

Page 336: ...scent Key and slide the 3rd Drawer out to the front If pressing the Paper Descent Key does not allow you to slide out the 3rd Drawer insert a screwdriver or similar ob ject through the hole in the Rear Lower Cover and unlock the drawer 1155D026AA 2 Remove four screws on the Slide Rails and pull the 3rd Drawer out to the front 3 Unplug one connector loosen two thumbscrews to remove the Connector Bo...

Page 337: ...lug one connector and remove the Cover Assy 4425D104AA 3 Remove two screws and the inner cover 1161D016AA 4 Remove two screws and the drive bottom cover 4425D106AA 5 Unplug the connector and remove three screws and the drive base plate 1161D017AA Ensure correct meshing of gears at reinstallation NOTE ...

Page 338: ...ur pulleys 1155D030AA 8 Remove four wire holders and the Main Tray Use care not to bend the wire Use new wire holders at reinstallation NOTES 1155D031AA 9 Remove four screws each and the Frame Assy at the front and rear 4425D113AA 10 Remove the E ring slide the bushing off and remove the Wire Take Up Pulley Assy ...

Page 339: ... 1 Press the Paper Descent Key and slide out the drawer 1075D305CA If pressing the Paper Descent Key does not allow you to slide out the drawer open the Right Door and push the Lock Release Lever shown in the illustration with a screw driver or similar object to unlock the drawer 1075D368CA 2 Remove two screws and the metal plate 1075D306CA 3 Remove one screw and the connector cover ...

Page 340: ...awer Stoppers and the drawer 1075D308CA 1 Slide out the drawer 2 Remove one screw and the Lift Up Motor Cover 1075D309CA 3 Unplug one connector 4 Remove one E ring and the Lift Up Motor 1075D310CA If the Lift Up Motor is replaced with a new one loosen the screw and while lightly pressing the Lift Up Motor fixing bracket in the direction of the arrow tighten the screw NOTE ...

Page 341: ...per Cover and Rear Cover 1155D033AC 5 Remove ten screws and the IR Unit fixing bracket 6 Unplug three connectors 1155D034AB 7 Remove one stopper screw on the right of the IR Unit 1155D035AB 8 Remove one stopper screw on the left of the IR Unit 1155D037AA Remove two control panel mounting screws and slide the IR Unit towards the rear If a hard disk is mounted slide the IR Unit with care about the c...

Page 342: ...d the CCD Unit 1155D051AD 5 Loosen three screws indicated by the arrow 6 Remove six screws and the board cover 1 When removing the CCD Unit remove only the three screws specified That is remove the CCD Unit as one unit 2 After the CCD Unit has been reinstalled perform Scale CD Zoom CD Position CD and S ADF Mode CD In addition to these adjustments perform Address Adjust and Orig Size Adjust also if...

Page 343: ... has been unplugged from the outlet Never attempt to disassemble PWB J and the PH Unit 1155D040AA 1 The PH Unit is not maintainable It is to be replaced as an assembly NEVER open the top cover of the PH Unit to attempt a disassembly 2 Do not touch the window glass surface on the bottom of the PH Unit A dirty window glass results in white streaks in the image 3 When the PH Unit has been reinstalled...

Page 344: ...ss with a soft cloth 1155D211AA Wipe clean the EDH Glass with a soft cloth 1155D042AA 1 Remove the Original Glass 2 Using a soft cloth wipe clean the Scanner Rails Bushings at the front 1155D043AA 3 Using a soft cloth wipe clean the Scanner Rails Bushings in the rear Apply lubricant to the Scanner Rails Bushings after they have been cleaned NOTE ...

Page 345: ...ft to remove it from the copier 1155D214AA 1 Remove the Original Glass 2 Remove two screws and the Scanner cover 1155D045AA 3 Unplug two connectors 1155D046AA 4 Remove one screw and the flat cable holding bracket 5 Remove three screws and the flat cable 1155D047AB When the Scanner have been replaced perform Address Adjust NOTE ...

Page 346: ...he arrow to remove it from the holder then replace it with a new one Replacement Do not touch the Exposure Lamp with bare hands when cleaning or replacing it If the lamp has been replaced perform Address Adjust NOTE 1155D220AA P 1 Remove the Scanner Cover 2 Remove the Exposure Lamp 3 Remove the Exposure Lamp Heater from the Exposure Lamp and replace it with a new one 1155D221AA 1155D222AA 35mm Exp...

Page 347: ...its correct position when wiped clean NOTE 1155D050AA 4 Wipe clean the 2nd and 3rd Mirrors with a soft cloth 1075D051AB 1 Remove the Control Panel 2 Remove the Original Glass 3 Slide the Scanner all the way to the left 4 Remove six screws and the board cover 1155D052AA 5 Wipe clean the Lens with a soft cloth When the Lens has been cleaned perform Exp Lamp address and Orig Size Adjust NOTE 1155D053...

Page 348: ...ght Upper Cover Upper Right Cover Left Upper Cover Upper Left Cover and Original Glass 2 Remove the Scanner 3 Move the Scanner to the location shown Then remove the Scanner positioning screws one each at the front and rear and free the Scanner fixing bracket 1155D055AB 4 Slide out the IR Unit 5 Unplug one connector unhook the spring and remove four screws and the Scanner Motor 1155D056AA 6 Remove ...

Page 349: ...one spring and remove the Scanner Drive Cable 1155D058AA 9 Remove three screws and the drive side plate 10 Remove the Scanner Drive Pulley 1155D059AA Pulley A Pulley B Pulley C Cable Drive Pulley 1155D060AA 1 Position the round bead of the Scanner Drive Cable in the pulley as shown ...

Page 350: ...ip the Cable Holding Jig onto the pulley to secure the cable in position Make sure that no part of the cable rides on the other NOTE 1155D063AA 4 Fit the Cable Drive Pulley to the drive side plate and mount the pulley to the copier 1155D064AA Pulley B Pulley C 5 Wind the length of the cable on the cylindrical stopper end around pulleys C and B and secure its end to the frame 1155D065AA Pulley A Pu...

Page 351: ...D066AB When winding the cable around pulley B place the length of the cable on the cylindrical stopper end at the front and the length of the cable on the mounting bracket end in the rear NOTE 1155D067AA 7 Fit the cable into the Cable Guide Groove hook on the spring and secure it in position 1155D068AB 8 Remove the Cable Holding Jig When the Scanner Drive Cables have been replaced perform Zoom FD ...

Page 352: ...n three screws and slide out the PC Unit 1075U008AA 1 Slide out the PC Unit 2 Loosen two screws and remove the Developing Unit For the Developing Unit see p D 51 NOTE 1075D082AA 1 Remove the Developing Unit 2 Unplug one connector and remove the PC Drum Charge Corona For the PC Drum Charge Corona see p D 48 NOTE 1075D083AA 1 Remove the PC Drum Charge Corona 2 Unplug one connector and remove the Cle...

Page 353: ...he Cleaning Unit 2 Remove the PC Drum 3 Peel off the Cleaning Felt Pads and replace them with new ones When the Cleaning Felt Pad has been replaced clear Waste Toner Count of Consumables Counter available from Tech Rep mode NOTE 1161D037AA 1 Remove the PC Drum 2 Remove one screw and flat spring 3 Unplug two connectors and remove the Main Erase Lamp holder 1155D070AA 4 Remove one screw and the Main...

Page 354: ...1AA 1 Remove the PC Drum 2 Unplug one connector and remove the Cleaning Unit 3 Turn over the Cleaning Unit remove four screws unplug one connector and remove the PC Drum Paper Separator Fingers Assy One of the screws is provided with a collar Be careful not to lose it NOTE 1075D092AA 4 Remove two screws and the PC Drum Paper Separator Fingers mounting bracket During removal and reinstallation of t...

Page 355: ...removed and reinstalled be sure to adjust the position of the PC Drum Paper Separator Fingers For details see p D 79 NOTE 1155D122AA 1 Slide out the PC Unit 2 Remove the PC Drum 3 Using a soft cloth dampened with alcohol wipe clean the AIDC Sensor 1161D031AA 1 Remove the PC Drum 2 Remove the Cleaning Unit 3 Turn over the Cleaning Unit remove four screws unplug one connector and remove the PC Drum ...

Page 356: ... has been replaced perform the following steps 1075D098AA 1 Before installing the PC Drum apply lubricant shipped with the new Cleaning Blade to the cleaning felt pads at both ends of the PC Drum Also apply toner to the entire surface of the Cleaning Blade 1075U047AA 2 Install the PC Drum and apply a thin coat of toner to the surface of the PC Drum 1075D099AA A B 3 Holding onto both ends of the PC...

Page 357: ...ace the PC Ground Plate 1155D076AB PC Drum Charge Corona 1 Slide out the PC Unit 2 Pull out the Ozone Filter and replace it 1155D126AA 3 Remove the Rear Cover 4 Peel off the filter and remove two screws and the Toner Suction Fan Assy 1155D127AA 5 Pull out the Ozone Filter and replace it When mounting the Ozone Filter use care not to allow the films on both ends of the filter to be in contact with ...

Page 358: ... four screws and Suction Fan Assy 1155D129AA 4 Pull out the Ozone Filter and replace it 1155D130AA 5 Remove the Rear Cover 6 Pull out the Ozone Filter and replace it 1155D077AA 1 Remove the Rear Cover 2 Remove the Toner Collecting Bottle and replace it When the Toner Collecting Bottle has been replaced clear the Toner Collect count of Consumable available from Counter under the Tech Rep mode NOTE ...

Page 359: ...Mesh PC Drum Charge Comb Electrode and Cleaners 1075D103AA 1 Remove the PC Drum Charge Corona 2 Remove the grid meshes 3 Remove the holder covers at the front and rear 1161D021AA 4 Remove the cleaner cover 5 Extend the springs and remove the comb electrodes 1161D022AA 6 Remove the cleaner assy and remove the cleaning rolls ...

Page 360: ...rush If the blower brush is not effective in cleaning the Grid Mesh use a soft cloth dampend with alcohol to clean serious contamination NOTE Place the Grid Mesh on a flat surface and sweep the cloth along the mesh Do not touch the cleaned Grid Mesh with bare hands NOTE 1155D080AC 1 Open the Front Lower Door 2 Lower Lever M4 and slide out the Transport Tray Assy 3 Remove one screw and the fixing b...

Page 361: ...the holder covers at the front and rear and four paper guides 1155D083AA 3 Extend the corona wire spring and remove the corona wire and wire cleaner 1155D084AA Using a soft cloth dampened with alcohol wipe the housing clean of dirt 1155D085AA Using a soft cloth dampened with alcohol wipe the guide plate clean of dirt 1 Use care not to peel off the seal at the center of the guide plate 2 Be also ca...

Page 362: ...g Unit 2 Remove two screws and the Sub Hopper 1075D218AA 1 Remove the Sub Hopper 2 Loosen two screws and the Developer Scattering Prevention Plate 3 Remove the guide 1075D219AA When reinstalling the Developer Scattering Prevention Plate press it against the Developing Unit NOTE 1075D220AA 4 Remove two screws and the handle 5 Remove the Doctor Blade ...

Page 363: ... Replenishing Motor 9 Snap off the E ring and remove the bushing for the Developer Conveying Agitating Screw 10 Remove two screws and the bushing for the Bucket Roller 11 Remove four screws and the gear holder at the rear of the Developing Unit 12 Remove seven gears three shafts 1155D086AB 1155D087AB When reinstalling the bushing twist it into position NOTE 1075D223AA ...

Page 364: ... two screws each at the front and rear and the 1st 2nd Sleeve Magnet Rollers Assy 17 Remove the Toner Replenishing Sleeve Magnet Roller and the bushings on the front and rear 18 Disassemble the 1st 2nd Sleeve Magnet Rollers Assy as illustrated below 1155D088AA When reinstalling the bushing twist it into position NOTE When reinstalling the bushings twist it into position NOTE 1075D225AA 1075D226AB ...

Page 365: ... No Groove in Shaft 1st Sleeve Magnet Roller Groove in Shaft 2nd Sleeve Magnet Roller Gray Blue 1075D228AB Install the spring and developing bias terminal as illustrated on the left NOTE 1075D230AA Using a brush whisk dust and dirt off the Developer side seals 1155D123AA Replacement 1 Remove the Developing Unit 2 Peel off the Developer side seals and replace them with new ones ...

Page 366: ...he front Ds Positioning Collars Then remove and replace the front Ds Positioning Collars 1155D125AA 4 Remove four screws then remove the gear holder from the rear side of the Developing Unit 5 Remove three gears 6 Remove the two E rings one each from each of the rear Ds Positioning Collars Then remove and replace the rear Ds Positioning Collars Using a brush whisk dust and dirt off the seal To rep...

Page 367: ...ove the Sub Hopper Assy Developer Scattering Prevention Plate guide handle and the Doctor Blade 2 Tilt the Developing Unit and turning the drive gear dump the developer out of the unit Vacuum the developer remaining in the unit Since vacuuming the developer generates static electricity be sure first to remove the ATDC Sensor NOTE 1075D236AA 3 Reinstall the Doctor Blade handle guide and Developer S...

Page 368: ...55D093AA 5 Remove one screw and the Fusing Unit When the Fusing Unit has been replaced clear the count of Fusing Unit of PM Counter 4 4 and Waste Toner Count of Consumables Counter available from Tech Rep mode NOTE 1075D242AA 1 Remove the Fusing Unit 2 Remove four screws and the Web Roller Assy For the Web Roller Assy see p D 63 NOTE 1155D094AA 3 Remove one screw each at the front and rear and the...

Page 369: ...5D246AA 7 Remove two screws and the Fusing Roller Thermal Fuse 1155D096AA 8 Remove two screws and the Fusing Unit Rear Cover 1155D097AA 9 Unplug one connector and remove one screw and the heater lamp holder 10 Slide out Upper Fusing Roller Heater Lamps When installing the heater lamps make sure that the end of the lamps on which their ratings are shown is on the front side NOTE ...

Page 370: ...ve one screw and the heater harness 1155D100AA 17 Go to the rear of the Fusing Unit and slide out the Lower Fusing Roller Heater Lamp When reinstalling the Lower Fusing Roller Heater Lamp make sure that its end on which its rating is shown is at the rear NOTE 1161D023AA 18 Loosen the roller pressure springs at the front and rear to free the Lower Fusing Roller The illustration shows only the front...

Page 371: ... Remove four shoulder screws one washer and the Upper Fusing Unit 1075D253AA 21 Remove two screws and the Lower Paper Separator Fingers Assy 1155D102AA When the Upper Fusing Roller has been removed clear the count of Fusing Roller of PM Counter 4 4 available from Tech Rep mode NOTE 1155D103AA 23 Remove one screw one shoulder screw and the Pre Fusing Guide Plate ...

Page 372: ...pened with alcohol then apply silicone oil to the fingers NOTE 1155D104AA Replacement 1 Remove the Upper Paper Separator Fingers Assy 2 Unhook the finger springs remove the E ring and slide out the fixing shaft to replace the Upper Paper Separator Fingers 1155D106AA 1 Remove the Fusing Unit and loosen the roller pressure springs at the front and rear 2 Remove two screws and swing up the Upper Fusi...

Page 373: ...ller Thermistor Assy NOTE 4 Using a soft cloth dampened with silicone oil wipe clean the Upper Fusing Roller Thermistor If the thermistor is seriously contaminated first use a soft cloth dampened with alcohol then apply silicone oil to the thermistor NOTE 1155D108AA 1 Remove the Fusing Unit 2 Remove two screws and the harness cover 3 Remove the harness from the wiring saddle 4 Remove the Fusing Un...

Page 374: ...Roller Assy from the Fusing Unit 2 Remove one screw each from the Web Roller bushing and Web Take Up Roller bushing 1075D268AA 3 Remove the Web Roller and Web Take Up Roller When the Web Roller has been removed clear Web Count of Consumables Counter available from Tech Rep mode NOTE 1075D269AA 1 Remove the Web Roller and Web Take Up Roller 2 Remove the pressure springs at the front and rear 1075D2...

Page 375: ...oor 2 Lower Lever M4 and slide out the Transport Tray Assy 3 Using a soft cloth dampened with alcohol wipe clean the Upper Transport Roller 1155D111AA 1 Open the Front Lower Door 2 Lower Lever M4 and slide out the Transport Tray Assy 3 Using a soft cloth dampened with alcohol wipe clean the Lower Transport Roller ...

Page 376: ...rnover Roller Transport Rollers Upper Lower 1 Open the Front Lower Door Slide out the Duplex Unit and slightly lifting it up remove it from the copier 1155D210AA 1 Open the Left Upper Door 2 Using a soft cloth dampened with alcohol clean the Turnover Roller Transport Rollers Upper Lower ...

Page 377: ...m the cord clamps 1155D113AC 5 Remove two screws and the cover of the Exit Duplex Switching Unit 1155D114AC 6 Open the Exit Duplex Switching Unit 7 Remove the harness from the edge cover 8 Remove one screw and holding bracket Then remove the band from the Exit Duplex Switching Unit 9 Close the Exit Duplex Switching Unit and remove one E ring from the unit mounting shaft 10 Open and remove the Exit...

Page 378: ...ner Drive Cable Holding Jig PC Drum Paper Separator Fingers Jig 1 1075 7902 01 PC Drum Bearing Jig front 2 1075 7903 01 PC Drum Paper Separator Fingers Jig 3 1074 7903 02 PC Drum Bearing Jig rear 4 1031 7922 01 Shaft Scanner Mirrors Carriage Positioning Jig 1 1155 7902 01 Scanner Mirrors Carriage Positioning Jig 2 1022 7807 01 Set Screws 1155 7901 01 1075D114AA 1075D115AA 1075D116AA 1075D119AA 115...

Page 379: ...IDC Sensor Adjust D 86 Universal Tray width detection adjustment D 87 Zoom FD Adjust 410 0 5 mm Control Panel D 90 Registration CD 5 0 0 5 mm D 91 Registration FD D 92 Lead Edge Erase 3 0 1 0 mm D 94 Trail Edge Erase D 96 Loop Adjustment Approx 3 0 mm D 98 γ Table Within reference grada tion range D 100 Erasure Width 3 0 mm D 102 Zoom CD 200 1 0 mm D 104 Zoom FD 300 1 5 mm D 106 Scale CD 0 0 5 mm ...

Page 380: ...ontact for NC and NO Requirement Out of Adjustment When the actuator is closed If the gap between the switch and actuator is too big current does not at times flow to NC or NO If there is no gap between the switch and actuator the actuator is bent or the switch can be broken 1136D007AA Yellow NO Red COM 1136D009AA Blue NC Red COM Wiring for the NC Type Wiring for the NO Type 1074D040 Actuator 0 1 ...

Page 381: ...ock Switch is OFF when the Front Lower Door is closed move the Interlock Switch Assy towards the front When the Front Lower Door cannot be closed because the Interlock Switch is moved too much towards the front shift it back 1075D122AA 4 After the Interlock Switch Assy is moved tighten the mounting screw 5 Check the Interlock Switch ON OFF by closing and opening the Front Lower Door An NO type swi...

Page 382: ... the Set Sensor Assy is mounted 1075D129AA 3 Since the Set Sensor and the magnet catch are located on the same mounting bracket move them so that the Front Upper Door is securely locked when it is closed 4 After the Set Sensor and the magnet catch are moved tighten the mounting screw 5 Check the Set Sensor is activated and deactivated and the door locks by closing and opening the Front Upper Door ...

Page 383: ...d by a tension spring to the Tension Lever that maintains the tension of each timing belt adjustment is completed by re tightening the mounting screw after it has been loosened Reference 1161D005AA 1 Remove the Rear Cover 2 Remove one screw and the Large Capacity Cassette Lattice Connector mounting bracket 1075D131AA 3 Through the notch loosen the screw by which the Tension Lever is mounted as sho...

Page 384: ...hown on the left and then re tighten it 1155D134AA 1 Open the Front Lower Door and pull out the Duplex Unit 2 Remove the Duplex Unit Cover 3 Loosen the screw by which the Tension Lever is mounted as shown on the left and then re tighten it 1155D216AB 1 Open the Front Lower Door and pull out the Duplex Unit 2 Remove the Misfeed Clearing Knob and one screw then loosen five screws to remove the Duple...

Page 385: ...eft and then re tighten it 1155D137AA 1 Remove the Rear Cover and Upper Rear Cover 2 Loosen four screws on the Scanner Motor mounting bracket and then re tighten them 1075D311AA 1 Pull out the 3rd Drawer and remove it 2 Lift up the Main Tray and remove the two screws by which the Shift Tray is fixed Be careful the Main Tray wire easily comes off at reassembly NOTE 1075D312AB 3 Release the lock by ...

Page 386: ... by which the Tension Pulley Assy is mounted and move the assy in the direction of the arrow 6 After moving it tighten the mounting screw 1161D026AA 1 Remove the Front Left Cover and Left Front Cover 2 Loosen the screw that secures the Tension Pulley Assy and then tighten it again ...

Page 387: ...ularly when the Pick Up Solenoid is ON Requirement 1075D154AA 1 Remove the Right Door 2 Remove three screws and the Multi Bypass Unit 3 Remove two screws and the Manual Feed Paper Pick Up Solenoid Assy cover 4 Loosen two screws slide the pivot shaft and remove the Multi Bypass Table 5 Remove three screws unplug two connectors and remove the Manual Feed Paper Pick Up Solenoid Assy 1075D155AA 6 Set ...

Page 388: ...hen the Take Up Solenoid is OFF 5 After adjustment is completed tighten the two Take Up Solenoid mounting screws The gap between the E ring of the plunger and the Take Up Solenoid should be 2 5 to 3 0 mm when the Take Up Solenoid is OFF Requirement 1155D144AB 1 Remove the Left Lower Door 2 Remove eight screws and the Turnover Unit Assy 3 Loosen the two screws by which the Take Up Solenoid is mount...

Page 389: ...t with the guide plate when the Switching Solenoid is energized 4 After the adjustment is completed tighten the Switching Solenoid Assy mounting screw The stopper of the Exit Duplex Switching Plate should be in contact with the guide plate when the Switching Solenoid is energized Requirement 1155D142AA 1 Remove the Left Upper Door 2 Loosen the screw by which the Switching Solenoid Assy is mounted ...

Page 390: ...arator fingers are positioned between side A and side B To adjust turn the adjustment screw with a 3 mm Allen wrench The gap between the three PC Drum Paper Separator Fingers and the PC Drum should be 0 3 to 1 0 mm when the Separator Finger Solenoid is OFF Requirement 1075D148AA 3 Set the PC Drum Separator Fingers Jig against the Cleaning Unit and fix it with the Front and Rear PC Drum Lock Levers...

Page 391: ...the Turnover Exit Solenoid is ON 5 After the adjustment is completed tighten the two mounting screws The gap between the guide fingers and guide plate should be 4 mm when the Turnover Exit Solenoid is ON 1 0 Requirement 1155D141AA 1 Remove the Left Lower Door 2 Remove four screws and the mounting bracket 1155D139AA 3 Loosen one screw by which the Turnover Exit Solenoid Assy is mounted 1 0 1155D140...

Page 392: ... access the Security mode press the following keys in this order with the Tech Rep mode menu on the screen Press the keys in order of 1 and 2 3 Accessing the Adjust Mode To access the Adjust mode press the following keys in that order with the Tech Rep mode menu on the screen Press the keys in order of 1 and 2 Stop Key 0 of 10 Key Pad 0 of 10 Key Pad Stop Key 0 of 10 Key Pad 1 of 10 Key Pad 1155D1...

Page 393: ...sure to perform the Touch Panel Adj after the following items have been done 1 Memory Clear 2 Control Panel replacement When is this adjustment required 4 Touch the four crosses on the screen in sequence These crosses may be touched in any order but be sure to touch the center of each cross NOTE 1155D191CA 5 The cross touched changes into a grid marker consisting of a square with a cross superimpo...

Page 394: ...he Tech Rep mode to the screen Be sure to perform the Orig Size Adjust after the following items have been done 1 Memory Clear 2 A faulty original size detection occurs 3 Replacement of the CCD Unit and Scanner parts including the Exposure Lamp When is this adjustment required 1155D146AA 1 Place a chart a blank sheet of A4 lengthwise or Letter paper on the Original Glass and lower the Electronic D...

Page 395: ...e adjustment touch End and then Menu to recall the Tech Rep mode to the screen Be sure to perform the Address Adjust after the following items have been done Replacement of the CCD Unit and Scanner parts including the Exposure Lamp When is this adjustment required 1155D147AA 1 Lower the Electronic Document Hander with no original placed on the Original Glass The Start key remains lit up orange whi...

Page 396: ...ment 2 ATDC Sensor replacement When is this adjustment required 1075U010AA 1 Load the Developing Unit with two packs of fresh starter 2 Set the Developing Unit into the PC Unit 3 Reinstall the PC Unit into the copier and tighten the three screws 1 While the copier is in the adjustment cycle the Start Key is lit up orange The key turns green as soon as the adjustment cycle is completed 2 Note that ...

Page 397: ...bout 3 minutes 6 After the adjustment touch End and then Menu to recall the Tech Rep mode to the screen Be sure to perform the AIDC Adjustment F5 mode after the following items have been done 1 Starter replacement 2 AIDC Sensor replacement 3 Memory clear When is this adjustment required This adjustment must be made after F8 ATDC Sensor Adjustment NOTE While the copier is in the adjustment cycle th...

Page 398: ...ction Adjustment FD Mode after the following items have been done 1 Memory Clear 2 RAM Board replacement 3 Disassembly of the Universal Tray When is this adjustment required 1155D148AA 4 Select Max 5 Place A4 or Letter paper in the crosswise direction in the Universal Tray and slide the Edge Guide to the width of the paper 6 Press the Start key to execute the function 1155D149AA 7 Select Min 8 Pla...

Page 399: ...ection Adjustment after the following items have been done PC Unit replacement When is this adjustment required 1155D069AA 1 Slide out the PC Unit 1155D152AA 2 Remove the Rear Cover 3 Loosen the two screws on the PC Unit positioning pin 4 Install the PC Unit in place and tighten the two screws ...

Page 400: ...e been done 1 Transport Unit replacement 2 Removal of the Transport Motor and Synchronizing Motor When is this adjustment required 1155D206AA 1 Slide out the Transport Unit 1155D153AA 2 Remove the Rear Cover 3 Loosen the seven screws that secure the Transport Motor and Synchronizing Motor 4 Install the Transport Unit in place and tighten the seven screws ...

Page 401: ...t 3 to 3 Requirement 1155D208AA This adjustment must be made when the PH or the Scanner Drive Cable has been replaced NOTE If width A is longer than the specifications make the setting value smaller than the current one If width A is shorter than the specifications make the setting value greater than the current one 1 Use the following equation to find the setting value Specification 410 mm measur...

Page 402: ...1155D154AB This adjustment must be made after the PH has been replaced and following the adjustment of the reference Zoom FD Adjust NOTE If width A is longer than the specifications make the setting value smaller than the current one If width A is shorter than the specifications make the setting value greater than the current one 1 Use the following equation to find the setting value Specification...

Page 403: ...etween the leading edge of the paper and the image start position is just about average visually Check to see if width A on the test pattern is up to the specifications If it is outside the specified range perform the following adjustment steps Width A on the test pattern output should fall within the following range Specification Adjust Mode Setting Range 5 0 0 5 mm Registration FD 8 2 to 8 2 Req...

Page 404: ...ent one 1 Use the following equation to find the setting value Specification 5 0 mm measurement setting value 2 If a single adjustment procedure does not successfully bring width A into the specified range try another setting value Setting Instructions 4 7 5 8 0 3 6 9 C 1155D189CA Use to enter the setting value Use to chage the or sign Use to clear the setting value 1155D189CA 1155D197CA Be sure t...

Page 405: ...tput should fall within the following range Note The measurement shall be taken at the center on the leading edge of the paper Specification Adjust Mode Setting Range 3 0 3 0 mm Lead Edge Erase 0 to 5 Requirement 1155D156AB This adjustment must be made after the PH has been replaced and following Registration CD FD and Zoom FD Adjust NOTE If width A is longer than the specifications make the setti...

Page 406: ...ss the Start key to let the copier produce a test pattern Then press the Stop key 13 Check to see if width A on the test pattern is up to the specifications If it is outside the specified range replace the PH Unit ...

Page 407: ...tput should fall within the following range Note The measurement shall be taken at the center on the trailing edge of the paper Specification Adjust Mode Setting Range 3 0 3 0 mm Trail Edge Erase 0 to 5 Requirement 1155D157AB This adjustment must be made after the PH has been replaced and following Registration CD FD and Zoom FD Adjust NOTE If width A is longer than the specifications make the set...

Page 408: ...ss the Start key to let the copier produce a test pattern Then press the Stop key 13 Check to see if width A on the test pattern is up to the specifications If it is outside the specified range replace the PH Unit ...

Page 409: ...en any of the following symptoms occurs variations in the amount of print leading edge void paper skew folded edge and misfeed NOTE 1155D158AB 1 Open the Front Door and fit the Front Lower Door Interlock Switch Actuating Jig 1155D009AB 2 Slide out the Transport Tray remove the lever knob and cover and slide the Transport Tray back into the copier 1155D160AA 1155D159AA 1155D161AA A A A Correct A go...

Page 410: ...setting value smaller than the current one If length A is shorter than the specifications make the setting value greater than the current one If a single adjustment procedure does not successfully bring length A into the specified range try another setting value Setting Instructions 4 7 5 8 0 3 6 9 C 1155D189CA Use to enter the setting value Use to chage the or sign Use to clear the setting value ...

Page 411: ...t pattern 1138D349AA The gradation on the test pattern output should fall within the range between the upper and lower limits when compared with the reference gradation Reference Gradation Requirement 1138D349AA This adjustment must be made when the PC Drum has been replaced NOTE 1 On the Basic screen touch Density and then Photo to set the copier into the Photo mode 1155O230CB ...

Page 412: ...e Enter key to validate the setting value If the sample copy is darker than the reference gradation make the setting value smaller than the current one If the sample copy is lighter than the reference gradation make the setting value greater than the current one If a single adjustment procedure does not successfully bring the gradation level into the specified range try another setting value Setti...

Page 413: ...th 0 to 5 Requirement 1155D162AB This adjustment must be made when a shadow is produced from the Original Scale NOTE 1155D218AA 1 Set Lead Edge Erase of the printer to 0 See p D 95 for the erase width setting procedure 2 Place the test chart on the Original Glass as shown on the left and then lower the Electronic Document Hander 3 Make one copy on A3 or 11 17 paper in the full size mode 4 Check if...

Page 414: ...pecifications make the setting value greater than the current one If a single adjustment procedure does not successfully bring width A B into the specified range try another setting value Setting Instructions 4 7 5 8 0 3 6 9 C 1155D190CA Use to enter the setting value Use to clear the setting value 1155D190CA 1155D193CA Be sure to touch the Enter key before returning to the normal operation mode I...

Page 415: ...size 1 000 200 1 0 mm Zoom CD 0 990 to 1 010 Requirements This adjustment must be made when the CCD Unit has been replaced NOTE 1155D164AA 1 Place a scale in parallel with the Original Width Scale and make a copy Use the full size 1 000 mode and 200 mm or wider pa per If the scale is of plastic and transparent place a blank sheet of paper over it 1134D124AA 2 Measure the length of the scale on the...

Page 416: ...the setting value If the measurement does not fall within the specifications through one setting try another setting Setting Instructions 4 7 5 8 0 3 6 9 C 1155D190CA Use to enter the setting value Use to clear the setting value 1155D190CA 1155D194CA Be aware that the previous data is restored if the Panel Reset Key is pressed to return the copier to the normal operating state Be sure to touch Ent...

Page 417: ...ts This adjustment is to be made only if Zoom CD falls outside the specified range as checked after the Scanner Drive Cable has been replaced NOTE 1155D166AA 1 Place a scale in parallel with the Original Length Scale Perpendicular to the Original Width Scale and make a copy Use the full size 1 000 mode and A3 or 11 17 paper If the scale is of plastic and transparent place a blank sheet of paper ov...

Page 418: ...the setting value If the measurement does not fall within the specifications through one setting try another setting Setting Instructions 4 7 5 8 0 3 6 9 C 1155D190CA Use to enter the setting value Use to clear the setting value 1155D190CA 1155D195CA Be aware that the previous data is restored if the Panel Reset Key is pressed to return the copier to the normal operating state Be sure to touch Ent...

Page 419: ...ecified range with respect to the Original Width Scale Specification Adjust Mode Setting Range 0 0 5 mm Scale CD 7 0 to 7 0 Requirement 1 This adjustment must be made when the CCD Unit or Original Glass has been replaced 2 After the adjustment be sure return Erasure Width and Registration on the printer side to the original values NOTES 1155D164AA 1 Place a scale on the Original Glass so that it r...

Page 420: ...l Width Scale make the setting value greater than the current one If a single adjustment procedure does not successfully bring the leading edge image position into the specified range try another setting value Setting Instructions 4 7 5 8 0 3 6 9 C 1155D189CA Use to enter the setting value Use to chage the or sign Use to clear the setting value 1155D200CA 1155D189CA Be sure to touch the Enter key ...

Page 421: ...e Setting Range 0 0 5 mm Scale FD 12 0 to 12 0 Requirement 1 This adjustment must be made when the Scanner has been removed or the Scanner Drive Cable or Original Glass has been replaced 2 After the adjustment be sure to return Erasure Width Registration and Lead Edge Erase on the printer side to the original values NOTES 1155D166AA 1 Place a scale on the Original Glass so that it runs parallel wi...

Page 422: ...al Length Scale make the setting value greater than the current one If a single adjustment procedure does not successfully bring the leading edge image position into the specified range try another setting value Setting Instructions 4 7 5 8 0 3 6 9 C 1155D189CA Use to enter the setting value Use to chage the or sign Use to clear the setting value 1155D201CA 1155D189CA Be sure to touch the Enter ke...

Page 423: ...d the Scanner and also between the Scanner Mirrors Carriage Positioning Jig and the 2nd 3rd Mirrors Carriage Requirement 1155D054AB 1 Remove the EDH Upper Rear Cover Right Upper Cover Upper Right Cover Original Glass Holder and Original Glass 2 Temporarily loosen the set screw of the cable holding plate of the Scanner Drive Cable 1155D168AA 3 Fit the Scanner Mirrors Carriage Positioning Jig in the...

Page 424: ...ference to the Original Scale reference position and lower the EDH 2 Make a full size copy using A3 paper 3 Check that skew on the copy of the test chart falls within the specified range If it is outside the range follow these steps to make an adjustment 1155D224AA 4 Remove two screws and the Left Upper Cover 5 Loosen the two screws on the left side of the control panel and remove one screw on the...

Page 425: ...has been made tighten the screw for adjusting height of the 2nd 3rd Mirrors Carriage If the skew is In the direction of skew 1 Move the mounting bracket to the left as viewed from the rear of the copier In the direction of skew 2 Move the mounting bracket to the right as viewed from the rear of the copier Use the following formula to find how much the mounting bracket should be moved Amount of ske...

Page 426: ...t Lower Door 1075D123AA 3 Remove the Right Front Cover 4 Remove the Total Counter cover 1075D289AA 5 Connect the connector 4 pin of the Plug In Counter mounting bracket 6 Install the Plug In Counter mounting bracket with one screw at the rear and one screw and nut at the front When the Plug In Counter mounting bracket is installed be sure to set Key Counter of Security Mode to ON NOTE ...

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Page 431: ...ounter H 4 1155M084CB Metric Areas Inch Areas 1161M021BA 1155M085CA SYMBOL PART NAME LOCATION S1 Power Switch I 1 S2 Lower Front Door Interlock Switch H 1 S3 Right Door Interlock Switch H 1 S4 Upper Left Door Interlock Switch H I 4 S5 Lower Left Door Interlock Switch I 7 S6 Pre Drive OFF Front Switch I 1 S7 Sub Hopper Toner Empty Switch D 4 S8 Paper Dehumidifying Switch C D 26 S10 Paper Exit Switc...

Page 432: ...M D 13 CN29 2P QR 1P B 11 CN30 5P CT E 2 CN31 28P LATTICE I 4 CN32 4P SM C 12 CN33 9P SM I 4 CN34 2P SM D 13 CN36 2P SM C 4 CN37 2P CT K 4 CN39 9P YL I 4 CN42 2P CT E 6 CN43 2P CT E 6 CN46 3P SM L 4 CN47 3P CT J 4 CN54 3P CT J 4 CN55 12P LATTICE K 4 CN56 12P LATTICE J 7 CN57 3P SM C 3 CN58 2P CT C 7 CN59 3P CT B 6 CN60 6P CT B 7 CN62 3P CT I 5 CN64 3P SM B 11 CN66 2P SM B 7 CN69 8P SM F 12 1 U S A...

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Page 466: ...1155SB000EA 1155 7997 11 98022370 17196 Copyright 1998 MINOLTA CO Ltd Printed in Japan Use of this manual should be strictly supervised to avoid disclosure of confidential information MINOLTA CO LTD ...

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Summary of Contents for Di620

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Minolta Di620, Manual, Page: 393 / 466

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Summary of Contents for Di620

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