Epson Stylus Photo 925 Service Manual Download Page 27

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C H A P T E R

OPERATING PRINCIPLES

Summary of Contents for Stylus Photo 925

Page 1: ...EPSON STYLUSPHOTO925 Color Inkjet Printer SEOT02006 SERVICE MANUAL ...

Page 2: ... However should any errors be detected SEIKO EPSON would greatly appreciate being informed of them T The above not withstanding SEIKO EPSON CORPORATION can assume no responsibility for any errors in this manual or the consequences thereof EPSON is a registered trademark of SEIKO EPSON CORPORATION General Notice Other product names used herein are for identification purpose only and may be trademar...

Page 3: ...NOT CONNECT THE UNIT TO A POWER SOURCE UNTIL INSTRUCTED TO DO SO WHEN THE POWER SUPPLY CABLE MUST BE CONNECTED USE EXTREME CAUTION IN WORKING ON POWER SUPPLY AND OTHER ELECTRONIC COMPONENTS WARNING REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REPAIR TECHNICIAN MAKE CERTAIN THAT THE SOURCE VOLTAGES IS THE SAME AS THE RATED VOLTAGE LISTED ON THE SERIAL NUMBER RATING PLATE ...

Page 4: ...cing the product PPENDIX Provides the following additional information for reference Connector pin assignments Electric circuit boards components layout Electrical circuit boards schematics Exploded diagram Parts List Symbols Used in this Manual Various symbols are used throughout this manual either to provide additional information on a specific topic or to warn of possible danger present during ...

Page 5: ...Revision Status Revision Date of Issue Description A June 21 2002 First release ...

Page 6: ...6 Supported Memory Card 16 Supported Voltage 16 Multiple Slots Operation 16 Priority 16 Exclusive Access Control against External Storage Device Connecting Port 16 ternal Storage Device Connecting Port 17 Compatibility 17 Specifications for Devices Available 17 Current Supply 17 andalone Printing Function 18 File System 18 Media Format 18 File Format 18 Valid Image Sizes 18 Maximum Number of Photo...

Page 7: ...ton 23 p Down Arrow Buttons 23 lect Button 23 ack Button 23 ustom Buttons 1 and 2 24 tial Setting Values 24 APER 25 Paper Handling 25 Paper Specification 25 ut Sheet 25 nvelope 25 Printing Area 26 ut Sheet 26 nvelopes 26 perating Principles verview 28 Printer Mechanism 28 Print Head 29 inting Process 30 inting Method 31 Carriage Mechanism 31 arriage Motor CR Motor 31 arriage Home Position Detectio...

Page 8: ...ng Principles 40 C408 PSB PSE board 40 C475 MAIN Board 42 ain Elements 43 otor Driver Circuit 44 SF Pump Motor Drive Circuit 47 utter Motor Drive Circuit 47 nsor Circuit 48 oubleshooting verview 51 oubleshooting with LED Error Indications and EPSON Status Monitor 3 Messages 52 nit Level Troubleshooting 58 sassembly and Assembly verview 74 Precautions 74 Tools 76 Work Completion Check 77 sassembly ...

Page 9: ...Motor removal 108 Paper Eject Roller removal 110 PF Roller removal 112 F Scale installation 115 djustment utline 119 Conditions for Adjustments 119 djustment 120 Parallel adjustor 120 djustment Program 122 Outline 122 Starting up the adjustment program 122 EEPROM initialization 123 Head ID 124 CR Motor drive dispersion 125 Bi D adjustment 126 USB ID Input 128 First Dot Position Adjustment 129 Cut ...

Page 10: ...backup data 134 A4 normal paper printing 135 EEPROM data 136 aintenance verview 138 ROM Replacement 138 Cleaning 138 Service Maintenance 139 ppendix onnector Summary 147 Major Component Unit 147 SP List 148 ploded Diagrams 151 ectrical Circuits 163 ...

Page 11: ...C H A P T E R PRODUCTDESCRIPTION ...

Page 12: ...so available with SD and Multi Media Card by using external USB card reader Compatible with PRINT Image Matching 2 5 Exif 2 2 Connected with a printer unit via USB hub High quality color print max 2880 x 720 dpi in PC printing High speed print Exclusively used for USB I F Compact space saving Exclusively used for Windows Macintosh Multi size supported ASF Borderless print Roll paper supported with...

Page 13: ...Q font EPSON Courier 10 CPI 1 2 3 Paper Feeding V Feeding Method T Friction feed with ASF V Paper Path T Cut sheet ASF Top entry Front out V Feed Speed T 150m sec 10 16 mm feed T 4 5 inches sec Fast continuous feed 1 2 4 General Specifications for Cutter Mechanism V Cutting method Fixed cutting edge movable rotary blade V Cutting direction Unidirectional from 80th column side to 0th column side V ...

Page 14: ...sumption Approx 15W ISO10561 Letter Pattern Approx 7W in sleep mode Energy Star compliant Approx 0 4W in powered off mode sulation Resistance 10 M ohms min between AC line and chassis DC 500 V electric strength AC 1500 V rms 1 minute between AC line and chassis 1 2 7 Environmental Condition V Temperature T Operating 10 35 C See Figure 1 2 below for conditions T Non operating 20 40 C 1 month at 40 ...

Page 15: ...Print Head Life 3000 million dots nozzle or 5 years whichever comes first 2 9 Safety Approvals 20 V version Safety standards UL1950 CSA22 2 No 950 EMI FCC part15 subpart B class B CSA C108 8 class B 20 240 V version Safety standards EN 60950 VDE EMI EN 55022 CISPR Pub 22 class B AS NZS 3548 class B 2 10 Acoustic Noise Level Approx 42 dB A According to ISO 7779 ...

Page 16: ...t printing Only the image files in the valid slot are valid and photo numbers are assigned to the valid image files V For PC connection Windows Only one removable disk drive is displayed and only the media in the valid slot can be accessed from the removable disk V For PC connection Macintosh Only the media in the valid slot are mounted on the desktop 1 3 5 Priority The order of priority is define...

Page 17: ...versal Serial Bus Specifications Revision 1 1 Bit rate 12 Mbps Full Speed Device Data encoding NRZI Adaptable connector USB Series A Recommended cable length 2 meters 4 2 Specifications for Devices Available niversal Serial Bus Mass Storage Class Bulk Only Transport Revision 1 0 and bclass code is 0x06 SCSI transparent command set 4 3 Current Supply 0 mA max ...

Page 18: ...mage Framer Only files in the EPUDL directory are valid OTE PNG and TIFF formats are not supported 1 5 4 Valid Image Sizes The image sizes that are valid with this printer are in accordance with DCF Version 1 0 Note that the image sizes that are mandatory for DCF Version 1 0 are as follows Horizontal 160 X 1800 pixels Vertical 160 Y 1200 pixels However this printer handles the following size range...

Page 19: ...e and time information in accordance with the digital camera standard format Exif Data and time information of the file system supported in DOS timestamp of the file Fixed values 1 January 1970 00 00 00 5 7 3 Date Range nuary 1970 00 00 00 31 December 2069 23 59 59 any photo data files have date and time information outside this range the entire file rt result will be pending ...

Page 20: ...ed after sorting in the card DPOF This icon turns on when the printing setting for the print specification file that is defied by DPOF is valid PIF This icon turns on when P I F files are stored in the inserted memory card Black Ink No ink When the ink has run out Ink low When the ink is about to run out Large amount remaining When 76 to 100 of the ink remains Medium large amount remaining When 51...

Page 21: ...g accessed ompactFlash LED This LED turns on when a card is inserted into the CompactFlash slot and the slot is valid and blinks while being accessed Table 1 3 Icons Name Icon Conditions blinks turn on alternately turns on turns on turns on turns on Table 1 5 Error Source Error Display Other Printer Ink out black Black ink out Black T026 The genuine EPSON ink cartridge listed above is recommended ...

Page 22: ...e are recommended Maintenance request Service required Parts inside your printer are at the end of their service life Contact your dealer for replacement Cutter error position Cutter error Turn the printer off and remove any jammed paper Wait a few minutes then turn the printer back on Cutter error jam Unable to cut Turn the printer off and remove any jammed paper Wait a few minutes then turn the ...

Page 23: ... all the previous panel operations are canceled and the default settings are regained If any document is spooled for printing the latest spooled values are regained If an extension connector is selected a folder selection display is displayed only when no printing is performed 1 6 5 6 Up Down Arrow Buttons Press the Up Down arrow button to move the cursor at the highlighted area on the panel displ...

Page 24: ...e Page Layout Advanced Settings Enhancements Advanced Settings Brightness Advanced Settings Saturation Advanced Settings Sharpness Advanced Settings Automatic Correction 1 7 Initial Setting Values Initial setting values during the initial operation are as follows V Page position Current paper position is the page front end position V Line feed 4 23 mm 1 6 inch V Right margin position 80 columns V ...

Page 25: ...78kg 8 2 2 Envelope ze 10 241 3mm x 104 8mm DL 220mm x 110mm C6 162mm x 114mm 220x132 220mm x 132mm Japanese Chokei 3 120mm x 205mm Japanese Chokei 4 90mm x 205mm Japanese Yokei 1 120mm x 176mm Japanese Yokei 2 114mm x 162mm Japanese Yokei 3 98mm x 148mm Japanese Yokei 4 105mm x 235mm Quality 10 DL C6 Bond paper PPC Air mail Japanese Chokei 3 4 Craft New Kent Japanese Yokei 1 2 3 4 Craft New Kent ...

Page 26: ...ve the printing range consists of a combination of ntable areas A B and C e quality of the printing in each of the A B and C printing areas is different and ere are cases where printing in the B and C areas becomes garbled 1 8 3 2 Envelopes Figure 1 5 Printable Area for Envelopes Printable Area A Printable Area B Printable Area A 14mm Right Margin 3mm Left Margin 3mm Top Margin 3mm Bottom Margin 3...

Page 27: ...C H A P T E R OPERATINGPRINCIPLES ...

Page 28: ... Drives the carriage Almost no driving sound A linear scale is mounted to facilitate checking the current position of the carriage F Motor DC motor with brush Drives the Paper Feed Roller at paper regular feeding paper supply and paper ejection To facilitate checking the paper feed pitch a loop scale is mounted on the surface of a high precision gear utter Motor DC motor with brush Drives the Cutt...

Page 29: ...control functions e print head stores the head ID in EEPROM and generates an appropriate PZT drive ltage to prevent amount of ink from varying with print heads The following explains print head basic components V PZT PZT is an abbreviation of Piezo Electric Element A certain level of voltage expands and contracts PTZ The drive wave generated on the MAIN board drives PZT and PZT pushes the top cavi...

Page 30: ...nge shape therefore PZT does not squeeze the cavity Ink pressure inside the cavity is kept normal 2 Ejecting State When the print signal is output from the C475 MAIN board IC Nozzle Selector located on the print head unit latches data once by 1 byte unit An appropriate PZT latched by the nozzle selector is pushed into the cavity by the common voltage applied from the main board By this operation i...

Page 31: ... size varies according to print data and this mode enables even sharper image output on exclusive paper 2 1 3 Carriage Mechanism The carriage mechanism consists of Carriage motor CR motor Carriage unit CR unit CR guide shaft platen gap adjustment mechanism parallelism adjustment mechanism etc 2 1 3 1 Carriage Motor CR Motor A DC motor is used as the drive source Table 2 2 below shows the specifica...

Page 32: ...he carriage guide shaft The carriage guide shaft is an eccentric shaft and is rotated by operating the adjust lever and thus narrows 1 2 mm or widens 2 1 mm the gap platen gap PG between the platen surface and the print head Figure 2 6 Adjustment of Adjust Lever CR Motor Parallelism Adjustment Bushing Linear Scale CR Unit Adjust Lever PG Lever CR Guide Shaft Photo interrupter Encoder Platen Surfac...

Page 33: ...rce from the PF Motor and the names of parts on the path Figure 2 7 Paper Feeding Mechanism When paper is loaded from the ASF the PF sensor detects the paper loading and the paper feed mechanism conveys the paper once until the leading edge of the paper arrives at the center of the Front Paper Guide If the paper loading is not detected Paper Out error is displayed If paper loading is detected afte...

Page 34: ... on the fixed cutter rotates along the fixed tting edge to cut the paper Like the CR Motor and PF Motor the Cutter Motor is a C motor However cutting operation is not controlled by a scale and encoder but is ntrolled by the two photosensors mounted at both ends of the moving area of the ovable rotary blade Figure 2 8 shows the transmission path of the driving force from e Cutter Motor and the name...

Page 35: ...37 6 44 4 CCW Change Lever rotates CCW Release the Clutch mechanism lock position Figure 2 9 below shows the switching route concerning the driving force from the ASF Pump Motor to the ASF Unit Figure 2 9 Switch the ASF Pump Motor Drive to ASF Unit Side V Transfer the ASF Pump motor drive to LD roller ASF Pump Motor pinion gear rotates CW direction with a specific steps Combination Gear 14 4 38 4 ...

Page 36: ...echanism varies depending on the rotational ection of the ASF Pump motor as shown in the table below Table 2 7 ASF Unit Function ASF Pump Motor Rotational Direction Directions 1 1 The ASF Pump Motor rotational direction seen from the right side of the printer Corresponding Functions Clockwise Picks up and loads paper Counterclockwise Release the Change Lever Clutch mechanism ...

Page 37: ...tor pinion gear rotates CW direction and the drive from the ASF Pump motor is transmitted to the ASF LD roller shaft through the Clutch lock tooth and the Clutch gear The ASF hopper release lever rotates with the ASF LD roller and release the ASF Hopper The ASF hopper is pushed with the Compression spring 4 96 and the paper is picked up with the ASF LD roller The ASF LD roller rotates CW direction...

Page 38: ... 4 Combination Gear 37 6 44 4 Spur Gear 36 8 mbination Gear 9 6 24 Spur Gear 27 2 Pump Gear e Pump unit and Wiper mechanism drives according to the ASF Pump motor ational direction as shown in the right table Following figure shows the overview of the pump mechanism operation Figure 2 12 Pump Mechanism Figure 2 13 ASF Pump Motor Drive Transmission Path to the Pump Unit Table 2 8 ASF Pump Motor Rot...

Page 39: ... gure below shows outline of capping operation Figure 2 14 Capping Mechanism 2 1 7 3 Cap Unit This printer does not use absorbing pads To ensure the same effect as absorbing pads the Cap Unit of this printer is changed in the following points compared with that of the conventional printer models 1 To keep the moisture inside the cap the diameter of the ink discharge hole is smaller than that for t...

Page 40: ...8 PSB PSE board The power supply boards of Stylus Photo 925 use a RCC Ringing Chalk Converter circuit which generates 42VDC for drive line and 5VDC 3 3VDC for logic line to drive the printer The application of the output voltage is described below Printer section Printer section C408 PSB PSE Board C475 MAINBoard 3 3VDC 5VDC C475 PNL Board CR Motor PF Motor ASF Motor Head Driver Board HP PE Sensor ...

Page 41: ...3 3VDC PSC signal from Main board Energy saving signal Smoothing Circuit C51 C52 D51 TRANS T1 Main Switch Circuit Over Current Protection Filter Circuit C11 DB1 L1 C1 F1 TH1 AC Input Q1 Over current protective function Over voltage protective function Secondary side SW function with delay circuit Power saving mode applied 3 3V Chopper Circuit Full Wave Rectifier Circuit Smoothing Circuit ...

Page 42: ...IC10 Data Address SDRAM IC4 Common Driver IC18 Motor Driver IC13 Motor Driver IC12 Motor Driver IC7 CN9 CN8 CN13 CN12 CN11 CN14 CN15 Head CR Motor PF Motor ASF Motor CT Sensor PE Sensor E01A27CA CPU ASIC 2in1 IC11 Reset IC EEPROM IC8 Parallel IF Flash ROM IC3 USB HUB IC6 MAX1602 controller IC16 CN4 CN5 C475PNL Preview Monitor USB IF CN3 SDRAM IC5 CR Encoder CN10 CN17 CN18 Motor Driver IC14 CPU V83...

Page 43: ...IC Generates head common voltage Motor Driver IC13 CR motor drive IC Motor Driver IC14 PF motor drive IC Motor Driver IC12 ASF motor drive IC Motor Driver IC7 Cutter motor drive IC Table 2 11 Main Elements Printer section IC Location Function CPU V833 IC1 USB storage class target Control of various cards Image processing Operating frequency 60MHz ASIC E09A40BA IC2 Package 256 pin PBGA Operating fr...

Page 44: ...r to drive the carriage unlike a stepping motor can not recognize the rrent position by pulse The linear scale mounted along the carriage travel region tects the carriage position physically The linear scale encoder sensor outputs two pes of TTL level pulses phase A and phase B Figure 2 20 Output Waveform from the CR Linear Scale Encoder The current moving direction of the carriage is detected bas...

Page 45: ...e CPU suppose that the carriage has arrived at the lock lever position T The CPU has detected 500 mA as the CR motor drive current T The difference between P1 and P2 output pulse count when the carriage moves from the right frame is 30 The CR Motor reverses and the carriage moves from left to right again If the CPU has detected 720 mA as the CR motor drive current the CPU supposes that the carriag...

Page 46: ...etect paper feed length by the given control pulse Therefore a loop scale is ounted on the spur gear 73 6 to detect the paper feed length The loop scale encoder tputs two types of TTL level pulses phase A and phase B e rotational direction of the rotor of the PF Motor is determined by the phase tween the phase A and phase B waveforms Figure 2 23 shows the output waveforms m the loop scale encoder ...

Page 47: ...Circuit 2 2 2 4 Cutter Motor Drive Circuit Like for the CR Motor and PF Motor a DC motor is used as the motor for the cutter mechanism which is newly designed for this printer Although the CR PF motor drive circuit detects the relevant unit position by the scale the cutter drive circuit detects the cutter position by the photosensors located at both ends of the cutter travel region Based on the si...

Page 48: ...als V Thermistor THM The thermistor is attached directly on the print head driver board It monitors the temperature around the print head and determines the proper head drive voltage according to the ink viscosity that varies by the temperature The temperature detected by the thermistor is returned to the CPU analog port When the temperature rises the head drive circuit lowers the drive voltage Wh...

Page 49: ...sts of the loop scale mounted at the left end of the PF roller shaft and a transmission type photosensor It has the maximum resolution of 1 180 inch and outputs to the CPU the High signal through a black slit on the loop scale and the Low signal through a transparent slit The PF Motor is controlled based on these output signals ...

Page 50: ...C H A P T E R TROUBLESHOOTING ...

Page 51: ...pecification and error indication Figure 3 1 Troubleshooting Flowchart START Unit level Troubleshooting Unit repair Assemble Adjustment END Table 3 1 Motor Coil Resistance Motor Location Check Points Resistance ASF Motor CN11 Pin1 and 3 Pin2 and 4 7 0Ω 10 25 C phase Table 3 2 Sensor Check Points Sensor Name Check Points Signal Level Switch Mode PE Sensor CN18 Pin1 and 2 2 4V more than 0 7V less th...

Page 52: ...Status LED Indication LCD Indication EPSON Status Monitor 3 Condition for Error Detection atal error indication On General error Turn the printer off Remove any foreign objects from inside the printer Wait a few minutes then turn the printer back on If the problem persists contact your dealer This error display occurs when any of the following conditions occurs 1 The CR Unit does not operate norma...

Page 53: ... documentation for information about clearing the jam This error display occurs when paper is detected even after paper eject motion aper out Blink Paper is not set correctly Set the paper correctly then press the Roll Paper button if using roll paper or press the Maintenance button if using sheet paper This error display occurs when the PE sensor can not detect the front end of paper during paper...

Page 54: ...error display occurs in either of the following cases 1 The cutter motor when operated does not run normally 2 The carriage of the cutter does not recognize the home position utter error jam Unable to cut Turn the printer off and remove any jammed paper Wait a few minutes then turn the printer back on Table 3 3 LED Error Indications and EPSON Status Monitor 3 Messages Printer Status LED Indication...

Page 55: ...ecommended Press the Maintenance button for ink cartridge replacement nk cartridge out or Wrong ink cartridge Depends on the result f the cartridge etection Blink Color ink cartridge not correctly installed Color T027 The genuine EPSON ink cartridge listed above is recommended This error display occurs in either of the following cases 1 Ink consumption reaches 100 2 Faulty ink cartridge NOTE A lit...

Page 56: ...he printer can not communicate with the PC nk cartridge recognition rror before ink eplacement CL Blink This error display occurs if any abnormal ink cartridge has been detected at head cleaning after ink replacement Table 3 3 LED Error Indications and EPSON Status Monitor 3 Messages Printer Status LED Indication LCD Indication EPSON Status Monitor 3 Condition for Error Detection ...

Page 57: ...rs if any abnormal ink cartridge has been detected at initial ink cartridge Memory card error Compatible error The inserted card cannot be used with this printer Memory card error SmartMedia is inserted pside down SmartMedia card inserted incorrectly Table 3 3 LED Error Indications and EPSON Status Monitor 3 Messages Printer Status LED Indication LCD Indication EPSON Status Monitor 3 Condition for...

Page 58: ...but the icon for cartridge flashes and the printer does not accept any operation on the panel CR Motor 1 Check to see if the CR Motor connector cable is connected CN14 on the Main Board 2 Check to see if any damage is observed on the CR Motor connector cable 1 Connect the CR Motor connector cable to the CN14 on the Main Board 2 Replace the CR Motor with a new one PF Roller does not rotate at all i...

Page 59: ...t Bush Roller 1 Check to see if the Right Bush Roller is in position 1 Replace the Right Bush Roller with a new one Paper Guide Top 1 Check to see if the Paper Guide Top is in position 1 Replace the Paper Guide Top with a new one Cutter does not return to the home position Cutter Unit 1 Check to see if the movable cutter is on the 80th digit position 1 Replace the Cutter Unit CR Unit moves a littl...

Page 60: ...on the both PE Sensor Lever 2 Check to see if the PE sensor cable is out of position 3 Check to see if any damage is observed on the PE sensor cable 4 Check to see if the PE sensor work correctly by using the tester Refer to Table 3 2 Sensor Check Points 1 Install the torsion Spring 0 22 in the proper position on the PE Sensor Lever 2 Connect the PE sensor cable to CN18 on the Main Board and the c...

Page 61: ...all the Front Frame properly 3 Replace the Front Frame with a new one Paper Eject Roller 1 Check to see if the Paper Eject Roller has been installed properly 2 Check to see if the gear of the Paper Eject Roller rotates properly 1 Install the Paper Eject Roller properly 2 Install the Paper Eject Roller gear properly Although the first sheet is fed from the ASF Unit the next sheet is not fed and n e...

Page 62: ...r from the SF the Hopper does not perate Paper is not set correctly Set the paper correctly then press the Roll Paper button if using roll paper or press the Maintenance button if using sheet paper ASF Unit 1 During paper feed operation check to see if the Hopper is operating and the compression spring 4 96 is in the correct position 1 Install the compression spring 4 96 properly between the ASF f...

Page 63: ...h is broken 1 Reinstall the tension spring 0 143 inside the clutch mechanism 2 Reinstall the clutch so that the round hole in the clutch is put correctly on the projection on the LD Roller 3 Replace the clutch mechanism with a new one Ink System Unit 1 Check to see if the Compression spring 1 47 comes off from the Change lever 1 Reinstall the compression spring 1 47 on the Change Lever properly he...

Page 64: ...cleaning sheet in the ASF up side down Then holding the top edge try to load the paper from the Printer driver The micro pearl on the LD Roller surface is removed To remove severe smear staple a cloth moistened with alcohol to a post card and clean the roller in the same manner If the problem is not solved replace the LD Roller with a new one Table 3 6 Check Points for Paper Out Error continued Ob...

Page 65: ...o the home osition and error display ccurs Cutter Motor 1 Check to see if the cutter motor connector cable is connected to CN17 on the Main Board 2 Check to see if the cutter motor connector cable is damaged 1 Connect the cutter motor connector cable to CN17 on the Main Board 2 Replace the cutter motor with a new one CT sensor 1 Check to see if the CT sensor is installed properly inside the cutter...

Page 66: ... Printer does not operate at all Power Supply Board Main Board 1 Check to see if the connector cable from the Power Supply Board is connected to CN19 on the Main Board 2 Check to see if the connector cable from the Power Supply Board is damaged 1 Connect the connector cable 2 Replace the Main Board with a new one If the problem is not solved replace the Power Supply Board with a new one Although t...

Page 67: ...onitor 3 occurs Ink Cartridge 1 Check to see if the ink cartridge is normal by installing it in another printer 1 Replace the Ink Cartridge with a new one No Ink error Printer does not execute printing operation and error display by LED and EPSON Status Monitor 3 occurs Ink Cartridge 1 Check to see if ink is remaining in the ink cartridge 2 Check to see if the ink cartridge is normal by installing...

Page 68: ... 1 Wipe the grease from the Front Frame and apply it again Ink System Unit 1 Check to see if the Change Lever operates smoothly 1 Replace the Change lever with a new one The bottom surface of the CR Unit comes in contact with the surface of the Front Frame FrontFrame 1 Check to see if the Front Frame is deformed 1 Replace the Front Frame with a new one CR Unit is in contact with the Paper Guide To...

Page 69: ...ssing nozzles varies with CL operation Cap Unit 1 Check to see if there is any foreign material around the seal rubber parts on the cap assembly 2 Check to see if any damage is observed around the seal rubber parts on the cap assembly 3 Check to see if the compression spring 0 98 has been installed on the Cap Unit properly 4 Check to see if the Ink tube is connected to the bottom of the Cap Unit c...

Page 70: ...new one 4 Execute head cleaning and check the nozzle check pattern If the problem is not solved replace the Print Head with a new one Stripes perpendicular to the CR moving rection appear with uneven density of int f the problem is not solved replace the CR Motor with a new one CR Unit 1 Check to see if the surface of the CR Guide Shaft has any sever stain 2 Check to see if the surface of the CR G...

Page 71: ...ged 1 Clean the surface of the PF Roller carefully 2 Replace the PF Roller with a new one 3 Replace the Spur gear 73 6 with a new one Printer driver and exclusive paper 1 Check to see if the suitable paper is used according to the printer driver setting 1 Use the suitable paper according to the printer driver setting Print Head 1 Check to see if each segment is printed correctly in the nozzle chec...

Page 72: ...he Front Frame is stained with ink 1 With a soft cloth wipe the ink stains off the Front Frame 1 Check to see if the Front Frame is deformed 1 Replace the Front Frame with a new one Housing Lower Covers 1 Check to see if Housing Lower Covers are stained with ink 1 With a soft cloth wipe the ink stains off the Housing Lower Covers carefully Paper Eject Roller 1 Check to see if the Paper Eject Rolle...

Page 73: ...C H A P T E R DISASSEMBLYANDASSEMBLY ...

Page 74: ...follow the instructions in this manual T Wear protective goggles to protect your eyes from ink If ink gets in your eye flush the eye with fresh water and see a doctor immediately T Always wear gloves for disassembly and reassembly to avoid injury from sharp metal edges T Never touch the ink or wasted ink with bare hands If ink comes into contact with your skin wash it off with soap and water immed...

Page 75: ...rotect sensitive microprocessors and circuitry use static discharge equipment such as anti static wrist straps when accessing internal components T Never remove the ink cartridge from the carriage unless this manual specifies to do so T When transporting the printer after installing the ink cartridge be sure to pack the printer for transportation without removing the ink cartridge T Use only recom...

Page 76: ...0 ROM puller EPSON 2035659 F749 Table 4 2 Screws No Description Appearance 1 C B S SCREW 3x4 F UC 2 C B S SCREW 3x4 F ZN 3 C B S SCREW 3x6 F ZN 4 C B S TITE 3x6 F ZN 5 C B S TITE SCREW 3x4 F ZN 6 C B S TITE SCREW 3x6 F ZN 7 C B S TITE R SCREW 3x6 F UC 8 C B S TITE P4 3x6 F ZN 9 C B P TITE SCREW 3x6 F ZN 10 C B P TITE SCREW 3x8 F ZN 11 C B P SCREW 2 5x5 F ZN 12 C P SCREW 2 5x6 F ZN 13 C P SCREW 3x4...

Page 77: ...perature V Checked V Not necessary Is the ASF motor at correct temperature V Checked V Not necessary Is the paper path free of any obstructions V Checked V Not necessary Main Unit Cutter Mechanism Does the movable rotary blade move smoothly V Checked V Not necessary Is there no abnormal sound V Checked V Not necessary Is there no dirt or obstacle in the moving zone of the movable rotary blade V Ch...

Page 78: ...ncoder Board removal PF Motor removal ASF Frame Unit removal LD Roller Unit removal CR Unit removal CR Motor removal Ink System Unit removal Circuit Board Unit removal Waste Drain Ink Pad Unit removal Paper Eject Roller removal PE Sensor removal page 81 page 85 page 90 page 108 page 95 page 91 page 105 page 102 page 98 page 110 page 94 page 99 page 87 Housing removal page 79 PF Roller removal page...

Page 79: ...crews C B S SCREW 3x6 F ZN securing the Housing at the rear of the printer Figure 4 3 Removing the two screws at the Rear of the Housing 3 Lift the rear of the Housing slightly disconnect the Panel FFC from the Main Board and remove the Housing Figure 4 4 Removing the Housing A U T I O N T Ensure that C B S TITE R 3 x 6 F US screws are used for the two screws on the front side of the printer The t...

Page 80: ...talled on the Main Frame C B P TITE SCREW 3x8 F ZN LCD Grounding Plate T Tightening torque for screws Two screws in the front of housing C B S TITE R SCREW 3x6 F UC 5 7 kgf cm Three screws at the rear of housing C B S SCREW 3x6 F ZN 5 7 kgf cm Four screws securing the housing cover C B P TITE SCREW 3x8 F ZN 5 7kgf cm T When installing the Stacker Supplement on the Cutter Cover make certain that th...

Page 81: ...e Panel Unit to the Housing and remove the Panel Unit Figure 4 8 Removing the Panel Unit Disconnect the Panel FFC from the Panel Board C B P TITE SCREW 3x8 F ZN T The buttons will come off when the Panel Unit is removed from the Housing In installation locate the buttons as shown below Figure 4 9 Installing the Buttons T Tightening torque for screws Four screws securing the Panel Unit C B P TITE S...

Page 82: ...0 Removing the combination gear 47 19 2 3 Remove the three screws C B P TITE SCREW 3x8 F ZN securing the Housing Lower Cover Left Rear and remove the Housing Lower Cover Left Rear Figure 4 11 Removing the Housing Lower Cover Left Rear 4 Remove the two screws C B S SCREW 3x6 F ZN and C B P TITE SCREW 3x8 F ZN securing the Housing Lower Cover Left Front and remove the Housing Lower Cover Left Front ...

Page 83: ...ght Rear Figure 4 13 Removing the Housing Lower Cover Right Rear T Tightening torque for screws Five screws securing the Housing Lower Cover Left Rear Front C B P TITE SCREW 3x8 F ZN 5 7kgf cm C B S SCREW 3x6 F ZN 5 7kgf cm J U S T M E N T E Q U I R E D T Once the combination gear 47 19 2 has been removed or when it has been replaced with a new one be sure to apply an appropriate amount of grease ...

Page 84: ...river and remove the Housing Lower Cover Right Front Figure 4 15 Removing the Housing Lower Cover Right Front 2 C B S SCREW 3x6 F ZN C B S SCREW 3x4 F ZN T Install the Housing Lower Cover Right Front so that the projection as shown below is positioned inside Figure 4 16 Installing the Housing Lower Cover Right Rear T Tightening torque for screws Eight screws securing the Housing Lower Cover Right ...

Page 85: ...ink cartridges Remove the Cover Cartridges for black and color ink cartridges from the CR Unit Disengage the hooks and remove the Head FFC Holder Cover from the CR Unit Figure 4 17 Removing the Head FFC Holder Disconnect the Print Head FFC and Encoder FFC from the connectors of the Print Head 8 Remove the two screws C B P TITE SCREW 3x8 F ZN and B TITE SEMS W2 2 5x5 F ZB securing the Print Head to...

Page 86: ...ecting the Head FFC and Encoder FFC Head Positioning Pins Head Grounding Plate A D J U S T M E N T R E Q U I R E D T Tightening torque for screws Two screws securing the Print Head C B P TITE SCREW 3x8 F ZN 5 7kgf cm B TITE SEMS W2 2 5x5 F ZB 1 5 2 5kgf cm T When the Print Head is replaced with a new one following adjustments must be performed in the order below 1 Head ID input 2 Initial ink charg...

Page 87: ...e the Timing Belt from the pinion of the CR Motor Figure 4 22 Removing the Timing Belt 5 Remove the Driven Pulley by pushing it downward from the Driven Pulley Holder 6 Disengage the hooks which fasten the PG Lever to the Main Frame and remove the PG Lever Figure 4 23 Removing the PG Lever A U T I O N T Do not touch the CR Scale with bare hands Otherwise the surface of the CR Scale can be soiled o...

Page 88: ... remove it together with the CR Unit from the Main Frame 10 Remove the CR Guide Shaft from the CR Unit Hooks PG Lever Complement CR Guide Shaft C B S TITE P4 3x6 F ZN Parallelism Adjusting Bush C A U T I O N T Although removing the CR Guide Shaft only is possible never do that be sure to remove it together with the CR Unit If the CR Guide Shaft only is removed the nozzle surface of the Print Head ...

Page 89: ... one make sure that the timing belt is set in the setting groove as shown below Figure 4 27 Timing Belt Setting Position Setting Groove Timing belt T When installing the PG Lever on the Main Frame set the Torsion Spring in the position as shown below properly Figure 4 28 Torsion Spring Setting Position T When installing the CR Scale on the CR Unit make sure that the CR Scale does not come in conta...

Page 90: ...priate amount of grease G 56 to the specified points Refer to Figure 6 3 Lubrication point 2 in Chapter 6 T When replacing the Driven Pulley Holder with a new one apply an appropriate amount of grease G 26 to the specified points Refer to Figure 6 2 Lubrication point 1 in Chapter 6 T Once the CR Unit has been removed or when it has been replaced with a new one make the following adjustments 1 PG a...

Page 91: ...er Shaft Holder to the Main Frame The screw on the right side is found in the rear Figure 4 32 Removing the LD roller shaft holder 1 5 While placing the ASF Hopper in the ASF Frame disengage the hooks of the LD Roller Shaft Holder by pulling them up and remove it Figure 4 33 Removing the LD roller shaft holder 2 6 Disconnect the cable from the PE Sensor connector mounted on the LD Roller Shaft Hol...

Page 92: ... Mechanism Round hole in the Clutch Protrusion on the LD Roller Shaft T When connecting the cable to the connector of the PE Sensor fasten the cable to the LD Roller Shaft Holder as shown below Figure 4 36 Installing the PE sensor cable T When installing the LD Roller Shaft Holder on the printer mechanism set the Change Lever to front and place the paper return side in the ASF Frame T Make certain...

Page 93: ...the two screws in the numerical order as shown below Spur Gear 35 2 Spur Gear 23 2 C B S SCREW 3x6 F ZN LD Roller Shaft Holder 1 2 T Tightening torque for screws One screw securing the Head FFC Grounding Plate C B S SCREW 3x6 F ZN 8 10kgf cm Two screws securing the LD Roller Shaft Holder C B S SCREW 3x6 F ZN 8 10kgf cm A D J U S T M E N T R E Q U I R E D T Once the LD Roller has been removed or wh...

Page 94: ...he printer body and remove the LD Roller Refer to 4 2 7 LD Roller removal Disengage the hooks of the PE Sensor fastened to the LD Roller Shaft Holder and take out the PE Sensor Figure 4 40 Removing the PE Sensor Hooks PE Sensor C H E C K P O I N T T Make sure that the Torsion spring 0 22 is hung to the following suitable position Figure 4 41 Checking the setting of Torsion Spring Torsion Spring 0 ...

Page 95: ...ter body Figure 4 42 Removing the ASF Unit Disconnect the cables from the ASF Unit If the Change Lever has been set in the front position push it down rearward and remove the ASF Unit Figure 4 43 Position of Change Lever 6 Pull off the spur gear 23 2 mounted at the right side of the ASF Unit Figure 4 44 Pulling off the Spur Gear 23 2 7 Remove the two Compression Springs from the ASF Unit Figure 4 ...

Page 96: ...e the ASF Frame and ASF Hopper Figure 4 46 Separating the ASF Frame and ASF Hopper Remove the Torsion Spring 32 7 set at the rear of the ASF Frame Figure 4 47 Removing the Torsion Spring 32 7 10 Remove the Pad holder Paper return plate from the ASF frame Figure 4 48 Removing the Pad Holder ASF Frame ASF Hopper Torsion Spring 32 7 Pad Holder ...

Page 97: ...Order in which the Screws for ASF Unit are to be tightened T Tightening torque for screws Two screws securing the ASF Unit C B S TITE 3x6 F ZN 8 10kgf cm C B S TITE P4 3x6 F ZN 8 10kgf cm J U S T M E N T E Q U I R E D T When the ASF Frame and ASF Hopper are to be replaced with new ones be sure to apply an appropriate amount of grease G 26 to the specified points Refer to Figure 6 5 Lubrication poi...

Page 98: ... P TITE SCREW 3x8 F ZN Hooks T The Waste Drain Ink Pad is composed as shown below In installation take care not to confuse the positions of the Waste Drain Ink Pad members Figure 4 52 Positions of Waste Drain Ink Pad members T Be sure to place the ink tube in the correct position on the Waste Drain Ink Pad Placing the ink tube in a wrong position can cause ink leakage A D J U S T M E N T R E Q U I...

Page 99: ...r Figure 4 53 Removing the Timing Belt 5 Remove the two screws C P SCREW 3x4 F ZN while holding the CR Motor and remove the CR Motor Figure 4 54 Removing the CR motor A U T I O N T When removing the timing belt take care not to damage the CR Scale or the PF Scale Driven Pulley Holder CR Scale PF Scale Timing Belt T When installing the CR Motor connect the CR Motor Connector Cable to the Main Board...

Page 100: ...tor Cable from the connectors CN17 and CN15 on the Main Board 4 Disengage the four hooks fastening the Cutter Cover to the Cutter Unit and remove the Cutter Cover Disengage the hooks at the side of the Cutter Cover by pushing them up Figure 4 56 Removing the Cutter Cover 5 Remove the two screws C B S SCREW 3x6 F ZN securing the Cutter Cover Bottom at the bottom of the Cutter Unit and remove the Cu...

Page 101: ...ard securely T Tightening torque for screws Two screws securing the Cutter Cover Bottom C B S SCREW 3x6 F ZN 5 7kgf cm Six screws securing the Cutter Unit C B S SCREW 3x6 F ZN 8 10kgf cm C B S SCREW 3x4 F ZN 8 10kgf cm A D J U S T M E N T R E Q U I R E D T Once the gear shaft which transmits the driving force from the PF Motor to the paper eject roller in the cutter mechanism has been removed or i...

Page 102: ...tter motor connector cable CN17 T PE sensor connector cable CN18 T CR Encoder FFC CN10 T PF Encoder FFC CN12 T CT sensor connector cable CN15 T Head FFC CN8 CN9 T Panel FFC CN5 Remove the four screws C B S SCREW 3x6 F ZN securing the Circuit Board Unit to the printer body and remove the Circuit Board Unit from the printer body carefully Figure 4 60 Removing the Circuit Board Unit 5 Remove the 17 s...

Page 103: ...the Shield Plate and remove the Main Board Figure 4 63 Removing the Main Board 2 8 Remove the four screws C B S SCREW 3x6 F ZN securing the Power Supply Board to the Shield Plate and remove the Power Supply Board Figure 4 64 Removing the Power Supply Board C P SCREW 3x6 F ZN C P SCREW 2 5x6 F ZN C B S SCREW 3x6 F ZN C B S TITE SCREW 3x6 F ZN Power Cable T When installing the Main Board and Power S...

Page 104: ...tems T Before removing the Main Board connect the USB cable and read out the data stored in the Main Board by using the EEPROM data backup function of the adjustment program After replacing the Main Board with a new one write the read out data in the new Main Board T CR variation correction T Confirm the memory card drive T Printing on A4 size noramal paper If the data can not be read from a defec...

Page 105: ...N securing the Ink System Tray to the printer body and remove the Ink System Tray Figure 4 66 Removing the Ink System Tray 8 Remove the four screws C B S SCREW 3x6 F ZN and C B S SCREW 3x4 F UC securing the Ink System Frame to the Main Frame Figure 4 67 Removing the Ink System Unit 9 Remove the Ink System Unit Cap Pump Unit carefully 10 Disengage the hooks fastening the Cap Unit to the Ink System ...

Page 106: ... square cut portions of the Head Cleaner at the two hooks of the Ink System Figure 4 69 Setting the Hooks of Ink System T When installing a new Cap Unit take care not to touch the seal rubber T The component parts in the Pump unit are not individually supplied as ASP So please replace the whole Pump unit when replacing the Pump unit T Take care not to crush or leave any stress on the ink tube conn...

Page 107: ...tem Tray C B S SCREW 3x6 F ZN 4 6kgf cm Five screws securing the Ink System Frame C B S SCREW 3x4 F UC 6 8kgf cm C B S SCREW 3x6 F ZN 6 8kgf cm C B S SCREW 3x6 F ZN which secure the Cap Unit and Cutter Unit 8 10kgf cm J U S T M E N T E Q U I R E D T Once the combination gear 9 6 24 has been removed or when it has been replaced with a new one be sure to apply an appropriate amount of grease G 26 to...

Page 108: ...securing the PF Encoder and remove the PF Encoder See Figure 4 73 Removing the PF Scale Remove the PF Scale stuck on the PF Roller carefully Figure 4 73 Removing the PF Scale 5 Remove the plain washer retaining the combination gear 13 6 33 and remove the combination gear 13 6 33 Figure 4 74 Removing the Combination Gear 13 6 33 A U T I O N T Do not touch the PF Scale with bare hands The surface if...

Page 109: ...r Cable T Install the PF Scale on the PF Roller Gear properly by referring to 4 2 18 1 PF Scale installation T Plug the PF Motor Connector Cable in the connector CN13 on the Main Board securely T Tightening torque for screws One screw securing the PF Encoder C B P SCREW 2 5x5 F ZN 2 4kgf cm Two screws securing the PF Motor C P SCREW 3x4 F ZN 5 7kgf cm A D J U S T M E N T R E Q U I R E D T Once the...

Page 110: ...y See step 7 described in 4 2 15 Ink System Unit removal Remove three screws C B S SCREW 3x6 F ZN securing the Front frame to the Main frame Figure 4 77 Removing the Front frame Lift the left side of the Front Frame slightly and shift it to the left for its removal Remove the PF Encoder PF Scale and combination gear 13 6 33 from the printer body See steps 3 5 described in 4 2 16 PF Motor removal 1...

Page 111: ... S T M E N T R E Q U I R E D T Once the Paper Eject Roller has been removed or when it has been replaced with a new one be sure to apply an appropriate amount of grease G 26 to the bore of the bush Refer to Figure 6 13 Lubrication point 12 in Chapter 6 T Once the combination gear 13 6 33 has been removed or when it has been replaced with a new one be sure to apply an appropriate amount of grease G...

Page 112: ...ge the hook located at the right side of the Paper Guide Front and slide the Paper Guide Front to the left Figure 4 82 Removing the Paper Guide Front 1 8 Release the PF Grounding Spring at the left side of the Paper Guide Front from the Main Frame and lift the left side of the Paper Guide Front and remove it Figure 4 83 Removing the Paper Guide Front 2 9 Unlock the Paper Guide Top from the Main Fr...

Page 113: ... of the PF Roller in the cut area of the Main Frame as shown below and pull off the PF Roller together with the left bush to the left Actually PF Roller Gear is mounted Figure 4 86 Removing the PF Roller Paper Guide Top OHP Sheet Bush PF roller T To fasten the PF Roller to the Main Frame fit the projection of the left bush in the cut hole of the frame while pressing the right side of the PF Roller...

Page 114: ... for installing the Paper Guide Top Hook Torsion Spring 2 Install the Paper Guide Top on the Main Frame by following the steps as shown below with arrows and release the torsion spring from the hook Make certain that the projection of the Paper Guide Top is fit in the cut hole in the Main Frame For installation insert an OHP sheet the same way as for removal Figure 4 89 Installing the Paper Guide ...

Page 115: ...ter installing the Paper Guide Front on the Main Frame make certain that the hook and projections at the right side of the Paper Guide Front are fixed at the correct positions If they are not fixed at the correct positions paper jam can be caused Figure 4 90 Mounting Position of Paper Guide Front T Install the PF Scale on the PF Roller Gear by referring to 4 2 18 1 PF Scale installation J U S T M ...

Page 116: ...U T I O N T Do not touch the following surfaces Inside of the mounting hole for PF Roller Shaft of the PF Scale Printed side of the PF Scale T The Scale Mounting Plate does not have to be positioned so that its contour is adjusted to the circle printed on the PF Scale With this side down PF Scale Mounting Plate Scale Mounting plate scale tool No 1051765 C A U T I O N The D50 Tape does not have to ...

Page 117: ...stick the PF Scale on the spur gear 73 6 yet Using the PF scale unit mounting tool AS Tool No 1051767 stick the PF Scale on the spur gear Figure 4 94 Sticking the Loop Scale PF Scale Spur gear 73 6 Projections PF scale unit mounting tool 1051767 C H E C K P O I N T T Make sure that the two projections of the spur gear 73 6 are positioned in the round holes in the PF Scale T Make certain that the P...

Page 118: ...C H A P T E R ADJUSTMENT ...

Page 119: ... used cartridge forcibly Ink Out error may occur during operation If Ink Out error has occurred replace the ink cartridge with a new one and perform the same operation once again T Before executing protection counter clear by the adjustment program make certain that the waste ink pad has been replaced If not ink may leak from the lower housing Table 5 1 Adjustments Required in Repair and Order of ...

Page 120: ...ial Position of Right Parallelism Adjustment Bushing 2 Set the PG lever to the 0 position at the front 3 If the carriage unit is locked use a pair of pincers to press down on the lock lever and release it A U T I O N T Take care not to scratch the specially coated surface of the PF Roller or the rib surfaces of the Front Paper Guide T Clean the gap gauge with a cloth moistened with alcohol prior t...

Page 121: ...t the 0 position at the front 12 Turn the Left Parallelism Adjustment Bushing toward you to a position where the print head comes in contact with the thickness gauge Then turn the Parallelism Adjustment Bushing rearward in the direction of widening the platen gap by one tooth and set it there If the print head is already in contact with the gauge turn the bushing rearward to a position where it do...

Page 122: ... is specially designed for use on the Windows 98 platforms It will not run on DOS Windows 3 x or XP T This program runs only on USB I F Table 5 2 Adjustment Program No Main Menu Service Paper to be used See 1 Adjustment EEPROM initialization None p 123 Head ID A4 normal paper p 124 CR Motor drive dispersion None p 125 Bi D adjustment A4 normal paper p 126 USB ID input None p 128 First dot position...

Page 123: ... clicked Figure 5 5 Termination 5 3 3 EEPROM initialization It is required to write the initial setting values into EEPROM when the Main Board is replaced Figure 5 6 EEPROM initialization Click the OK button and the intended market will be written in EEPROM Figure 5 7 Intended Market Setting Completion Screen A U T I O N T Do not start up the adjustment program before connecting the USB cable to t...

Page 124: ...ted and then click on the OK button Figure 5 8 Head ID adjustment items Check the 13 character ID written on each of the print heads and enter the ID for the head that has been replaced Click on the OK button when the ID has been entered Figure 5 9 Input head ID 3 Select Head ID Check pattern printing make the printer print the Check Pattern on A4 normal paper and check the printing result Figure ...

Page 125: ...5 11 CR Motor drive dispersion Adjustment by writing the CR Motor drive dispersion decision value hen any of the CR Motor Main Board and Power Supply Board has been replaced ake adjustment by writing the CR Motor drive dispersion decision value Select all e replaced parts and click the OK button igure 5 12 Writing confirmation of CR Motor drive dispersion decision value 2 Adjustment by executing t...

Page 126: ...correctly The adjustment is implemented in a print confirm just print confirm sequence It is also possible to check the current settings th this function Select Printing the Bi D adjustment pattern and click the OK button Figure 5 14 Bi Directional adjustment items 2 The Bi D adjustment pattern includes the items as shown in the sample below Figure 5 15 Print sample of Bi D adjustment pattern ...

Page 127: ... again Figure 5 16 Bi D adjustment pattern If adjustments are necessary click on the Previous button to return to the previous screen select Input Bi D adjustment value and enter the required adjustment value Figure 5 17 Input Bi D adjustment value 5 If you select Checking present Bi D parameter you can check the Bi D adjusted value which have been input Figure 5 18 Checking the adjusted value ...

Page 128: ...re generated by the adjustment program and automatically added to e serial number to constitute the new USB ID is new USB ID is then entered into the control circuit board s EEPROM Figure 5 19 USB ID adjustment items 1 Click on the item to be implemented and then click on the OK button If Check USB ID has been selected the value will be displayed in the center of the screen at the bottom If Input ...

Page 129: ...er s request adjustment specify to shift the first dot position to the left or to shift it to the ht Figure 5 21 First dot position adjustment 5 3 9 Cut Position Adjustment With this function you can adjust the cut position Make sure the the check pattern is printed on the roll paper before you enter the adjustment value Adjust by the order below Checking by the check pattern Adjustment Printing C...

Page 130: ...he possible cause of each error are as follows Error messages 1 Cannot acquire the memory card drive handle 2 Cannot acquire the memory card drive letter 3 Cannot open the epson jpg file 4 Cannot reserve memory 5 Read error 6 Cannot copy the jpg file into the PC card 7 The copied jpg file in the PC card is not same as the original files Cause 1 The memory card drive is broken down or the printer d...

Page 131: ...sing dots Unused 1 8 ink cartridge e following ink is to be used for head cleaning Black Unused 1 21 ink cartridge Color Unused 1 11 ink cartridge Figure 5 24 Head cleaning 5 3 12 Initial ink charge This function implements the initial ink replenishment process The following ink is to be used for ink replenishment Black Unused 1 11 ink cartridge Color Unused 1 6 ink cartridge Figure 5 25 Initial i...

Page 132: ...n the cap is discharged to the waste drain ink pad After complete this sequence this program set the initial ink charge flag into the EEPROM and reset the several ink consumption counters to 0 A U T I O N T After carry out this function replace the waste drain ink pad with new one and reset the Waste drain ink pad counter Otherwise the ink or S46 liquid may leak from the pad during the transportat...

Page 133: ...e 5 27 Protection counter Figure 5 28 Check the protection counter Figure 5 29 Clear the protection counter 5 3 15 The number of the cutting operation With this function you can check the cutter operation count Click OK and the number of times the cutter has operated will be displayed in the central lower area on the screen Figure 5 30 The number of the cutting operation ...

Page 134: ...n to start reading the data Figure 5 31 EEPROM backup data The display as shown below will appear According to the instruction turn off the power to the printer replace the Main Board turn on the power again and click OK Figure 5 32 Data backup checking window 3 Upon completion of successful backup EEPROM parameter backup is completed will be displayed in the central lower area on the screen Figur...

Page 135: ... A4 normal paper printing r check pattern printing use one sheet of A4 normal paper Set a sheet of A4 normal per on the printer and click the OK button and printing of the check pattern will be rted eck the printed pattern If there is any problem make the adjustment again by the justment program The followings show the printed samples Figure 5 35 Print sample ...

Page 136: ...ollowing menu will be displayed hen a tick has been added to EEPROM Data on the supplementary menu Figure 5 36 EEPROM data e EEPROM data function contains the following two functions Check the EEPROM Data This enables the EEPROM data within a range specified by an address to be confirmed Change the EEPSOM data It is possible to write data into specified EEPROM addresses and amend existing values H...

Page 137: ...C H A P T E R MAINTENANCE ...

Page 138: ...with ink use a cloth moistened with neutral detergent to wipe it off V Side the printer Use a vacuum cleaner to remove any paper dust V ASF LD Roller If paper dust on the surface of ASF LD Roller lowers the friction set the adhesive surface of the cleaning sheet included in the media to the surface of the ASF roller and repeat loading paper from the ASF ROM C A U T I O N T Never use chemical solve...

Page 139: ...along with the firmware version ink counter select code page nozzle check pattern on the status printing sheet If the ink counter value is close to its limit notify your customer and recommend that the waste ink pad be replaced If the waste ink pad is not replaced at that time there is a possibility that Maintenance Error will occur soon after the printer is returned to the customer Once you have ...

Page 140: ...ly to the surfaces of the ASF Hopper and LD Roller Cam which come in contact with each other 4 Lubrication Point Part of the gear spur gear 35 2 of the clutch mechanism which come in contact with the LD Holder See Figure 6 5 Lubrication point 4 Lubrication Type G 26 Lubrication Amount φ1mm x 2 points Apply grease properly to the surfaces of the spur gear 35 2 and LD Holder which come in contact wi...

Page 141: ... the cutter mechanism which comes in contact with the frame See Figure 6 12 Lubrication point 11 Lubrication Type G 26 Lubrication Amount φ1mm x 2mm Lubricate with a dropping pipet Table 6 2 Lubrication Point continued NO Lubrication Type Point Remarks 12 Lubrication Point Inside the bore of the right bushing for the paper eject roller See Figure 6 13 Lubrication point 12 Lubrication Type G 26 Lub...

Page 142: ...PSON Stylus Photo 925 Revision A Maintenance Overview 142 Figure 6 2 Lubrication point 1 Figure 6 3 Lubrication point 2 Figure 6 4 Lubrication point 3 Figure 6 5 Lubrication point 4 G 26 G 56 G 26 G 26 ...

Page 143: ...PSON Stylus Photo 925 Revision A Maintenance Overview 143 Figure 6 6 Lubrication point 5 Figure 6 7 Lubrication point 6 Figure 6 8 Lubrication point 7 Figure 6 9 Lubrication point 8 G 26 G 26 G 26 G 26 ...

Page 144: ...N Stylus Photo 925 Revision A Maintenance Overview 144 Figure 6 10 Lubrication point 9 Figure 6 11 Lubrication point 10 Figure 6 12 Lubrication point 11 Figure 6 13 Lubrication point 12 G 26 G 26 G 26 G 26 ...

Page 145: ...PSON Stylus Photo 925 Revision A Maintenance Overview 145 Figure 6 14 Lubrication point 13 Figure 6 15 Lubrication point 14 G 26 G 26 ...

Page 146: ...C H A P T E R APPENDIX ...

Page 147: ...t CN8 CN9 CN12 CN4 CR motor Printhead PF motor C475MAIN CN17 CN1 CN10 CT sensor C408 PSB PSE CN2 CN1 Printer Mechanism USB CN3 CN11 CN5 CN13 CN14 CN2 PE sensor CF TypeáU Preview monitor MS SSFDC C475PNL AC power ASF motor CN19 CN18 CN15 CN6 HOST USB CR Encoder PF Encoder Cutter Motor Table 7 1 Connector Summary for C475 MAIN Connector Function CN1 CF Type II CN2 Memory Stick Smart Media CN3 USB I ...

Page 148: ... C B S SCREW B300204211 124 C P SCREW B010102311 125 C B P TITE SCREW 3x8 F ZN 126 C B S SCREW B300200111 127 BUTTON MOVE B 128 BUTTON PANEL B 129 BUTTON PRINT B 130 BUTTON CANCEL B 131 BUTTON PS B 132 BUTTON MEMORY B 133 OPTECAL TUBE PANEL 134 COVER COLOR LCD C 135 COVER LCD B 136 DOUBLE SIDE TAPE 3 5x34 137 DOUBLE SIDE TAPE 4 5x55 138 FOOT 139 SHEET PRINT B 140 SHEET CANCEL B 141 SHEET CUSTOM B ...

Page 149: ...T 541 PAPER GUIDE ASSY UPPER 542 POROUSPAD PAPER GUIDE FRONT B 543 PAPER GUIDE FRONT Table 7 2 ASP List continued Ref No Part Name 544 ROLLER EJ ASSY 545 FRAME FRONT 547 STARWHEEL ASSY FRONT 548 STARWHEEL ASSY REAR 549 SPUR GEAR 19 2 550 SHAFT SPUR GEAR CONNECT 551 SPUR GEAR 13 6 552 PLANE WASHER 4 1x0 5x6 5 553 CARRIAGE ASSY 554 C B S SCREW B300200111 555 C B S SCREW B300204211 556 C P SCREW B010...

Page 150: ... 723 C B P TITE SCREW 3x8 F ZN 724 CUTTER ASSY EDG 725 C B S SCREW B300204211 726 LEVER PG 727 COVER HARNESS 728 CABLE HEAD 729 C B S TITE P4 3x6 F ZN 730 TRAY POROUS PAD 731 POROUSPAD INK EJECT LOWER D 732 POROUSPAD INK EJECT MIDDLE D 733 POROUS PAD INK EJECT D 734 PAPER GUIDE LOWER 735 SPACER ASF 736 SHEET PROTECTION INK 738 COVER CARTRIDGE BK D 739 COVER CARTRIDGE C B Table 7 2 ASP List continu...

Page 151: ...PSON Stylus Photo 925 Revision A ppendix Exploded Diagrams 151 3 Exploded Diagrams ploded diagrams for Stylus Photo 925 are shown on the following pages ...

Page 152: ...dix Exploded Diagrams 152 EPSON STYLUS PHOTO 925 No 1 Rev 01 C475 C475 CASE 003 A A 125 125 125 125 102 122 135 128 127 130 129 133 132 131 149 125 101 112 104 100 103 125 122 122 106 144 107 105 134 137 136 137 136 140 139 143 142 141 120 ...

Page 153: ...OTO 925 No 2 Rev 01 C475 C475 CASE 004 122 125 122 122 122 122 122 122 122 122 122 122 122 122 122 122 122 122 122 122 122 121 124 122 125 125 126 122 122 122 122 122 122 E I G J N O B K M L H F 122 122 122 125 125 125 125 138 108 126 110 122 109 E D C C 138 111 D 113 122 138 148 ...

Page 154: ...PSON Stylus Photo 925 Revision A ppendix Exploded Diagrams 154 EPSON STYLUS PHOTO 925 No 3 Rev 01 C475 C475 ELEC 001 B 330 450 E I G J N O B K M L H F 200 ...

Page 155: ...0011 J K P L M N F 522 523 531 520 515 518 519 514 513 521 568 552 549 550 551 516 554 554 508 556 567 515 503 561 505 502 511 504 556 555 552 509 510 708 559 555 560 506 555 555 512 554 567 557 507 558 592 555 591 553 501 593 552 566 EPSON STYLUS PHOTO 925 No 4 Rev 02 C475 ...

Page 156: ...pendix Exploded Diagrams 156 C475 MECH 0021 526 555 534 527 532 525 530 517 524 530 528 527 529 544 536 533 542 554 554 555 562 545 548 547 541 541 539 539 539 541 540 539 565 543 537 548 500 564 EPSON STYLUS PHOTO 925 No 5 Rev 02 C475 ...

Page 157: ...PSON Stylus Photo 925 Revision A ppendix Exploded Diagrams 157 C475 MECH 003 709 710 711 712 707 713 719 E I G J N O B K M L H F E D C EPSON STYLUS PHOTO 925 No 6 Rev 01 C475 ...

Page 158: ...25 Revision A ppendix Exploded Diagrams 158 C475 MECH 0041 G 731 732 732 733 734 705 701 703 J I H 740 740 700 728 723 741 715 739 738 730 F 725 702 727 722 126 725 726 736 723 724 EPSON STYLUS PHOTO 925 No 7 Rev 02 C475 ...

Page 159: ...PSON Stylus Photo 925 Revision A ppendix Exploded Diagrams 159 C475 MECH 005 P O 729 706 718 725 704 725 725 717 716 725 721 714 735 EPSON STYLUS PHOTO 925 No 8 Rev 01 C475 ...

Page 160: ...PSON Stylus Photo 925 Revision A ppendix Exploded Diagrams 160 C475 POWE 001 B 300 E I G J N O B K M L H F EPSON STYLUS PHOTO 925 No 10 Rev 01 C475 ...

Page 161: ...PSON Stylus Photo 925 Revision A ppendix Exploded Diagrams 161 04 01 03 05 03 03 03 C475 PACK 002 07 06 EPSON STYLUS PHOTO 925 EAI Specitication No 9 Rev 01 C475 802 801 ...

Page 162: ...PSON Stylus Photo 925 Revision A ppendix Exploded Diagrams 162 04 01 03 05 03 03 03 C475 PACK 003 802 801 07 06 805 EPSON STYLUS PHOTO 925 All branches except EAI No 9 Rev 01 C475 400 without ETT AC110V ...

Page 163: ... A ppendix Electrical Circuits 163 4 Electrical Circuits e electrical circuit diagrams for the following circuit boards are shown on the lowing pages 75 MAIN control circuit board 08 PSB PSE circuit board 75 PNL Panel circuit board ...

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Epson Stylus Photo 925, Service Manual

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