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EPSON Stylus PHOTO 895/785EPX/915/825

Revision B

Disassembly and Assembly

Disassembly

4.2.9 LD Roller removal

Remove the Housing from the printer. (Refer to Section 4.2.1 "Housing
Removal")

Take the Head FFC off from the Head FFC holder located along the LD roller
shaft holder.

Figure 4-26. Taking Head FFC out from the FFC holder

Remove two screws (C.B.S 3x6 F/ZN) securing the LD roller holder to the Main
frame.

Figure 4-27. Removing two screws securing the LD roller holder

LD roller shaft holder

Head FFC holder

Tightening Torque for screw

• C.B.S 3x6, F/ZN screw for screw securing the LD roller holder: 9 +/- 1 kgf.cm

• C.B.S 3x8, F/ZN screw for screw securing the LD roller holder: 9 +/- 1 kgf.cm

C.B.S 3x6, F/ZN

C.B.S 3x8, F/ZN

LD roller cover

LD roller holder reinforcement board

Содержание Stylus Photo785EPX

Страница 1: ...EPSON STYLUSPHOTO895 785EPX 915 825 Color Inkjet Printer SEIJ01001 SERVICE MANUAL ...

Страница 2: ...ever should any errors be detected SEIKO EPSON would greatly appreciate being informed of them 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 trademarks or ...

Страница 3: ... MUST BE CONNECTED USE EXTREME CAUTION IN WORKING ON POWER SUPPLY AND OTHER ELECTRONIC COMPONENTS 4 WHEN DISASSEMBLING OR ASSEMBLING A PRODUCT MAKE SURE TO WEAR GLOVES TO AVOID INJURIER FROM METAL PARTS WITH SHARP EDGES WARNING 1 REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REPAIR TECHNICIAN 2 MAKE CERTAIN THAT THE SOURCE VOLTAGES IS THE SAME AS THE RATED VOLTAGE LISTED ...

Страница 4: ...yout 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 a procedure or an action Be aware of all symbols when they are used and always read NOTE CAUTION or WARNING messages Indicates an operating or maint...

Страница 5: ...Revision Status Revision Issued Date Description A April 19 2001 First Release B August 8 2002 Revision Added Stylus PHOTO 915 825 to the manual ...

Страница 6: ...a 17 1 5 6 File Sort 17 1 5 6 1 File Sort Rule 17 1 5 6 2 Date Data Capture Rule 17 1 5 6 3 Date Range 17 1 6 Printer PNL Operation Specifications 18 1 6 1 Switches 18 1 6 2 Indicators 18 1 6 3 Panel Functions 18 1 6 4 Printer Condition and Panel Status 19 1 7 Printer Initialization 20 1 8 Initial setting values 20 1 9 Errors 21 1 10 Printing of filled patterns 21 1 11 Monochrome PNL operation spe...

Страница 7: ...4 2 2 Operation Panel removal 77 4 2 2 1 Printer Panel Board Removal 77 4 2 2 2 Monochrome panel board removal 79 4 2 3 Housing Lower Cover Removal 80 4 2 3 1 Housing Lower Cover Left Removal 80 4 2 3 2 Housing Lower Cover Right Removal 81 4 2 4 Printhead removal 81 4 2 5 CR motor removal 84 4 2 6 Waste drain ink pad unit removal 85 4 2 7 Printer mechanism removal 86 4 2 8 Circuit board removal 87...

Страница 8: ...ate to the firmware for inspection 134 5 5 2 Brightness adjustment 135 5 5 2 1 Brightness adjustment procedures 135 5 5 3 Image pattern inspection 136 Chapter 6 Maintenance 6 1 Overview 138 6 1 1 Cleaning 138 6 1 2 Service Maintenance 139 Chapter 7 Appendix 7 1 Connector Summary 147 7 1 1 Major Component Unit 147 7 1 2 EEPROM Address Map printer section 152 7 1 3 EEPROM Address Map Storage section...

Страница 9: ...C H A P T E R 1 PRODUCTDESCRIPTION ...

Страница 10: ...ompact Flash Smart Media Memory Stick Microdrive SD Only Stlyus PHOTO 895 915 MMC Only Stlyus PHOTO 895 915 with PCMCIA adapter Connected with a printer unit via USB hub High Color Print Quality High Speed Printing Exclusively used for USB I F Windows Macintosh exclusive Compact Space Saving Multi size Compatible ASF Roll paper can be used 1 6inch Preview monitor optional PRINT Image Matching 2 5 ...

Страница 11: ...es x 5 Cyan Magenta Yellow Light cyan Light magenta Print Direction Bi direction with logic seeking Print Speed Printable Columns This value is the speed of normal dot printing Control Code ESC P Raster command EPSON Remote command Character Tables One international character sets PC 437 US Standard Europe Typeface Bit map LQ font EPSON Courier 10 CPI Table 1 1 Character Mode Character Pitch Print...

Страница 12: ...second between AC line and chassis 220 240V Version Rated Voltage AC220V 240V Input Voltage Range AC198 264V Rated Frequency Range 50 60Hz Input Frequency Range 49 5 60 5Hz Rated Current 0 25 A Power Consumption Approx 19W ISO10561 Letter Pattern Approx 3 5W in standby mode Energy Star compliant Insulation Resistance 10M ohms min between AC line and chassis DC 500V Dielectric Strength AC 1500V rms...

Страница 13: ... nozzle printing 1 2 8 Safety Approvals 120V Version Safety Standards UL1950 CSA22 2 No 950 EMI FCC part 15 subpart B Class B CSA C108 8 Class B 220 240V Version Safety Standards EN60950 VDE EMI EN55022 CISPR Pub 22 Class B AS NZS 3548 Class B 1 2 9 Acoustic Noise Level Approx 47dB A According to ISO 7779 1 2 10 CE Marking 220 240V Version Low Voltage Directive 73 23 EEC EN60950 EMC Directive 89 3...

Страница 14: ...port Rev 1 0 Storage Bit Rate 12Mbps Full Speed Device Data Encoding NRZI Adaptable Connector USB Series B Recommended Cable Length 2 meters Figure 1 3 USB Pin Assignment Device ID 00H 51H MFG EPSON CMD ESCPL2 BDC D4 MDL Stylus SP Photo SP 895 or 785EPX or 915 or 825 CLS PRINTER DES EPSON SP Stylus SP Photo SP 895 or 785EPX or 915 or 825 Table 1 3 Connector Pin Assignment and Signals Pin No Signal...

Страница 15: ...nly Stylus PHOTO 915 825 1 4 3 Supported Voltage 5v only 3 3v 5v 3 3v only Note1 Media that uses 3 3v 5v is automatically set based on the VS1 terminal PCMCIA Note2 The supply current to the memory card is max 330mA For Stylus PHOTO 895 785EPX or 500mA For Stylus PHOTO 915 825 1 4 4 Attached Card Adapter Imformation Stylus PHOTO 915 825 4 in 1 Flash Card Adapter is attached with Stylus PHOTO 915 8...

Страница 16: ... Camera specification file MRK Definition file used in camera specification mode AUTOPRINT MRK file that has a full pass name with up to 32 characters is valid EPSON frame file EFF Frame data file format defined for standard use of EPSON products Only files in the MISC FRAME directory are valid PNG and TIFF formats are not supported Stylus PHOTO 915 825 The following file formats can be used for t...

Страница 17: ...ign photo numbers Because the photo number is assigned in accordance with the file sort rule specific to this machine it may not match with the photo number displayed when the data is viewed in a digital camera 1 5 6 1 File Sort Rule This machine sorts the photo data files based on the following priorities 1 Older data first The date and time information attached to the photo data files are used f...

Страница 18: ...s or Ejects the Paper Pushing within 3seconds Starts the Cleaning of head Pushing for 3seconds When carriage is on the Ink Cartridge change position return carriage from Ink Cartridge change position Roll paper Loads or Ejects Back Out feed by pushing for 3 seconds the Roll paper Tear Off feed and return When carriage is on the Ink Cartridge change position return carriage from Ink Cartridge chang...

Страница 19: ...Switch Function Maintenance Initialize EEPROM Roll paper Pushing for 10 seconds Reset the ink overflow counter in the EEPROM Table 1 8 Error LED Indication Printer Status Error LED Priority Power ON 10 Ink sequence proceeding 6 Ink cartridge changing 5 Data processing 9 Paper out On 4 Paper jam condition On 3 Ink end black On Blink 8 Ink low black Blink 8 Ink end color On Blink2 8 Ink low color Bl...

Страница 20: ...om last power off When printer is initialized the following actions are performed a Cap the printer head b Eject a paper c Clears input data buffer d Clears print buffer e Sets default values 3 Software Initialization The ESC command also initialize the printer When printer is initialized the following actions are performed a Clears print buffer b Sets default values 1 8 Initial setting values Ini...

Страница 21: ... paper out error Paper Jam When the printer fails to eject a sheet it goes into a paper jam error No Ink Cartridge When the printer detects that ink cartridge comes off or failed to read or write CSIC data it goes into this error mode Maintenance Request When the total amount of ink wasted through cleanings and flushing reaches to the limit printer indicates this error and stops In such a case the...

Страница 22: ...lus PHOTO 785EPX 825 When all LCDs are displayed Figure 1 5 Monochrome PNL of Stylus PHOTO 895 915 Figure 1 6 Monochrome PNL of Stylus PHOTO 785EPX 825 Print Mode Paper Type Paper Size Page Layout Select Photo Copies Quality Photo enhance Select Photo Brightness Processing Cancel Print c g i d e f h Print Mode Paper Type Paper Size Page Layout Select Photo Copies Quality Photo enhance Select Photo...

Страница 23: ... panel Table 1 9 Switch description No Name Description 1 LCD PNL Indicates the print condition setting contents of printer 2 Print Printer start operation 3 Cancel Cancellation of operations and printing action 4 Select Photo Selects one or all frames 5 Cross shaped key Moves the cursor 6 Brightness Sets frame function 7 Processing Lights on or blinks while processing Table 1 10 Error LCD Indicat...

Страница 24: ...m x 235mm Japanese Chokei4 90mm x 205mm Japanese Yokei1 120mm x 176mm Japanese Yokei2 114mm x 162mm Japanese Yokei3 98mm x 148mm Japanese Yokei4 105mm x 235mm Quality 10 DL C6 Bond paper PPC Air mail Japanese Chokei3 4 Craft New Kent Japanese Yokei1 2 3 4 Craft New Kent Weight 10 DL C6 45g m2 75g m2 12 lb 20 lb Japanese Chokei3 4 50g m2 70g m2 13 lb 19 lb Japanese Yokei1 2 3 4 50g m2 100g m2 13 lb...

Страница 25: ...o Paper Size A4 210mm x 297mm Panoramic 210mm x 594mm Letter 215 9mm x 279 4mm 4 x 6 101 6mm x 152 4mm 100mm x 150mm 200mm x 300mm 89mm x 7m 100mm x 8m 210mm x 10m 8 Iron On Cool Peel Transfer Paper Size A4 210mm x 297mm Letter 215 9mm x 279 4mm 9 Ink Jet Note Cards Size A6 105mm x 148mm 10 Ink Jet Greeting Cards Size 8 x 10 203 2mm x 254mm 5 x 8 127mm x 203 2mm 11 Photo Stickers 16 Size A6 105mm ...

Страница 26: ...0mm x 8m 127mm x 8m 210mm x 10m 17 Premium Luster Photo Paper Size Letter 215 9mm x 279 4mm 18 Premium Semigloss Photo Paper Size A4 210mm x 297mm Letter 215 9mm x 279 4mm 100mm x 8m 4 x 26 101 6mm x 152 4mm 210mm x 10m 19 Bright White Ink Jet Paper Size A4 210mm x 297mm 20 EPSON ColorLife TM Photo Paper Size A4 210mm x 297mm Letter 215 9mm x 279 4mm 21 EPSON Economy Paper Size A4 210mm x 297mm 22...

Страница 27: ... paper dimension is defined by using command otherwise it is not reduced 14mm As for an area between 3mm and 14mm margin printing quality may decline Refer to 1 12 2 Paper Specification for PW paper width and PL paper length Printable Area A Printable Area B Printable Area A 14mm Right Margin 3mm Left Margin 3mm Top Margin 3mm Bottom Margin 3mm Table 1 11 Printing Area Paper Size Left Margin min R...

Страница 28: ... Figure 1 8 Printable Area for Envelopes Table 1 12 Envelope Margin Size Left Margin min Right Margin min Top Margin min Bottom Margin min 10 3 mm 0 12 28 mm 1 10 3 mm 0 12 14 mm 0 55 DL 3 mm 0 12 7 mm 0 28 3 mm 0 12 14 mm 0 55 C6 3 mm 0 12 3 mm 0 12 3 mm 0 12 14 mm 0 55 Printable Area LM RM TM BM ...

Страница 29: ...r Ink Cartridge Type Exclusive Cartridge Color Magenta Cyan Yellow Light Cyan Light Magenta Print Capacity 220 pages A4 360 dpi 5 duty each color Ink Life 2 years from date of production Storage Temperature Storage 20 oC to 40 oC within a month at 40 oC Packing 30 oC to 40 oC within a month at 40 oC Transit 30 oC to 60 oC within 120 hours at 60 oC and within a month at 40 oC Dimension 49 1 mm W x ...

Страница 30: ...ame are fixed and cannot be changed The values parenthesis are used when IEEE 1284 4 is valid nn indicates the number of bytes in Model Name String stored in E2H FFH 00H should be place at the end of the model name string Table 1 13 Setting the Model Name EEPROM setting Device ID bytes counter MDL value for Device ID and BDC ID 5EH 60H 7DH World Standard Device Euro Asia 00H don t care 00H 4EH 51H...

Страница 31: ...C H A P T E R 2 OPERATINGPRINCIPLES ...

Страница 32: ...Head Carriage Mechanism Paper Feeding Mechanism Paper Loading Mechanism Ink System Pump Mechanism Cap Mechanism and Carriage Lock Mechanism Like other EPSON ink jet printers the Stylus PHOTO 895 785EXP 915 825 is equipped with three stepping motors one for ASF Pump mechanism one for Paper feeding mechanism and one for carriage mechanism ASF unit uses rear entry front eject system This ASF unit is ...

Страница 33: ...Element Certain amount of voltage expands and contracts PTZ The drive wave generated on MAIN board drives PZT and PZT pushes the top cavity which has ink stored to discharge the ink from each nozzle on the nozzle plate Ink Cavity The ink absorbed from the ink cartridge goes through the filter and then is stored temporarily in this tank called cavity until PZT is driven Nozzle Plate The board with ...

Страница 34: ...tate When no printing signal is sent from PC or no PZT drive voltage is applied PZT does not change 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 C408 C498 MAIN board IC Nozzle Selector located on the printhead unit latches data once by 1 byte unit An appropriate PZT latched by the nozzle sele...

Страница 35: ...er products micro dot middle dot and large dot compose this mode Print dot 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 including printhead CR timing belt CR guide shaft platen gap adjustment mechanism parallelism adjustment mechanism CR guide ...

Страница 36: ...en gap PG between the platen surface and the print head This is a mechanism for use by the user to select the appropriate PG in accordance with the print results or other conditions such as the amount of curl in the paper Also the parallelism adjustment bushings mounted on the left and right ends of the carriage guide shaft adjust the amount of parallelism between the carriage guide shaft and the ...

Страница 37: ...g Figure 2 8 Paper Feeding Mechanism Following shows you how to transfer the PF motor drive to the PF roller and the Paper Eject Roller PF motor drive transmission path PF roller path PF Motor Pinion Gear CW Combination Gear 16 21 6 CCW Spur Gear 73 6 CW Paper eject roller path PF Motor Pinion Gear CW Combination Gear 11 6 36 8 CCW Spur Gear 25 6 CW Figure 2 8 Paper Feeding Mechanism Table 2 3 PF ...

Страница 38: ...sists of ASF motor LD roller Pad holder Paper return plate ASF Frame Hopper and so on Table shows the ASF motor specifications For the major feature of this ASF unit ASF HP sensor is not used and the single LD roller is built in the ASF unit Drive sent from the ASF motor is always transmitted to the ASF unit side But the Change lever and the Clutch mechanism switch ON OFF drive to the LD roller Dr...

Страница 39: ...Motor Drive Transmission Path When the ASF motor torque is switched to the ASF unit side by the clutch mechanism the function of the ASF mechanism varies depending on the rotational direction of the ASF motor as shown in the table below 1 The ASF Motor rotational direction seen from the right side of the printer Clutch Mechanism Unlike the previous products this product dose not have a ASF HP sens...

Страница 40: ...on force of the Tension spring 0 143 and the Clutch gear is engaged with the Clutch lock tooth as above Step2 s center figure 3 When the ASF motor rotates CW direction in the above Step3 s figure the Change lever moves to the right direction with the CW rotation of the Combination gear 37 6 44 4 And the drive from the PF motor is transmitted to the LD roller shaft via Clutch gear and Clutch lock t...

Страница 41: ... tension force of the Tension spring 0 143 And the Clutch lock tooth is OK with the Clutch gear to transmit the ASF motor drive as right figure The ASF motor pinion gear rotates CW direction and the drive from the ASF 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 Hopp...

Страница 42: ...bination Gear 14 4 38 4 CCW Combination Gear 37 6 44 4 CW Spur Gear 36 8 CCW Combination Gear 9 6 24 CW Pump Unit Gear CCW The Pump unit and Wiper mechanism drives according to the ASF motor rotational direction as shown in the right table 1 The ASF Motor rotational direction seen from the right side of the printer Following figure shows the overview of the pump mechanism operation Figure 2 14 Pum...

Страница 43: ... used for the previous models pumps and ejects ink only inside the cap by absorbing ink with the valve open By opening the Air valve the negative pressure is decreased and only the ink inside the cap is ejected the ink is not absorbed from Ink cartridge or head cavity But valveless cap system this operation is done out side of the capping area The CR moves to left side of the Cap assembly and the ...

Страница 44: ...s PHOTO 915 825 Power supply board C408 PSE Monochrome panel board C408 PNL Printer panel board C408 PNL B This section provides operating principles of C408 C498 MAIN Board and C408 PSE Board Refer to Figure 2 17 Electric Circuit for the major connection of the each boards and their roles Figure 2 17 Electric Circuit Printon section Printer section CC408 PSE Board C408 C498 MAIN 3 3VDC 5VDC 42VDC...

Страница 45: ...C 3 3VDC by the chopping regulator IC of the secondary circuit Figure 2 18 C408 PSE Board Block Diagram The C408 PSE board has the various control circuits to stop voltage output if a malfunction occurs on the power supply board or the main board while the printer mechanism is on duty Following explains each control and protection circuit Table 2 7 Application of the DC Voltages Voltage Applicatio...

Страница 46: ...oth wave form by the outer RC integration circuit 2 2 1 2 Protection circuit The C408 PSE board has the various control circuits to stop voltage output if a malfunction occurs on the power supply board or the main board or while the printer mechanism is on duty Following explains each control and protection circuit 42VDC line constant voltage control circuit The output of 42V line is monitored by ...

Страница 47: ...the printer s power switch is turned off while printing When the CR unit is not at the home position while the printer is printing the CR unit stops printing then the power is shut down after returning to the home position and finishing the locking action When the papers are stored in the printer mechanism in the condition supplied by the ASF even if the printer is not printing the paper is ejecte...

Страница 48: ...Printon section Printer section P ROM IC3 D RAM4M IC5 D RAM16M IC4 Data Address SDRAM IC18 CPU V832 IC15 Data Address Common Driver IC12 Q5 6 Motor Driver IC9 Motor Driver IC11 Motor Driver IC10 CN9 CN8 CN13 CN12 CN11 CN4 CN5 Head CR Motor PF Motor ASF Motor HP Sensor PE Sensor E01A22C CPU ASIC2in1 IC2 Reset IC EEPROM IC6 Parallel IF Flash ROM IC24 USB HUB IC IC20 E05B75B ASIC1 IC22 E09A31A ASIC2 ...

Страница 49: ...allel IF which connects the printer and Printon sections can receive the high speed data by means of the DMA function up to at the maximum 500 kbytes second The product can also receive the data transmitted at the maximum 800 kbytes second ECP mode in compliance with the IEEE1284 since it is applicable to the ECP mode Applicable to the USB Universal Serial Bus Rev 1 1IF Full speed 12 Mbps without ...

Страница 50: ...IC11 PF motor drive IC Motor Driver IC10 ASF motor drive IC Table 2 10 Main Elements Printon section IC Location Function CPU V832 IC15 USB storage class target PCMCIA control Image processing Operating frequency 47 6 MHz ASIC1 E05B75B IC22 Package 208pinPQFP Operating frequency 47 6 MHz and 48 MHz ASIC2 E09A31A IC17 Data communication with the printer section Start and finish of DMA by MWPACKU SW...

Страница 51: ...y the DATA signal output from the CPU IC9 the original data for the head drive waveform is written in the memory in the IC12 The addresses for the written data are determined by the A0 A4 signals and of among data used to determine the waveform angles is selected Then setting the selected data producing trapezoid waveform value and canceling the data are performed by the rising edges of the CLK1 a...

Страница 52: ...e hybrid type stepping motor and performs constant current bi polar drive CPU IC2 converts PF motor phase control signal to LB1946 micro step drive form and outputs to motor driver IC IC11 LB1946 Based on this signal IC11 determines the phase mode The current value on each phase is determined by CPU IC2 and outputs from the each port to driver IC IC11 Motor driver IC generates motor driver wavefor...

Страница 53: ...cuit and EEPROM are united Reset Circuit Reset circuit RTC9822 IC6 which monitors three types of voltage logic group 3 3V 5V and power group 42V is mounted on the C408 C498 MAIN board Each reset circuit monitors the voltage of 3 3V 5V and 42V and prevents the operation failure of printer by resetting CPU and ASIC if any failure is detected It is possible for this IC to monitor the 3 3V 5V and 42V ...

Страница 54: ...is not equipped on the ASF and the ASF HP is determined with the clutch mechanism 2 1 5 Paper Loading Mechanism ASF Unit HP Sensor This sensor uses the photoelectric conversion method and detects the CR home position at the right end of CR shaft by the HP sensor when the power is turned on This sensor outputs the HIGH signal to the CPU as it detects the CR home position when the power is turned on...

Страница 55: ...C H A P T E R 3 TROUBLESHOOTING ...

Страница 56: ...START Unit level Troubleshooting Unit repair Assemble Adjustment END Table 3 1 Motor Coil Resistance Motor Location Check Point Resistance CR Motor CN13 Pin 1 and 3 Pin 2 and 4 7 8 Ohms 10 25 C phase PF Motor CN12 Pin 1 and 3 Pin 2 and 4 7 8 Ohms 10 25 C phase ASF Motor CN11 Pin 1 and 3 Pin 2 and 4 7 8 Ohms 10 25 C phase Table 3 2 Sensor Check Point Sensor Name Check Point Signal Level Switch Mode...

Страница 57: ...r 0 2 sec off for0 4 sec Table 3 3 Error LED Indication Printer Status Error Priority Power ON 10 Ink sequence proceeding 6 Ink cartridge changing 5 Data processing 9 Paper out On 4 Paper jam condition On 3 Ink end black On Blink 8 Ink low black Blink 8 Ink end color On Blink2 8 Ink low color Blink 8 Ink end both color black On On 8 No ink cartridge color or black On 7 Reset Timer IC reset EEPROM ...

Страница 58: ...ed Paper is always loaded without any print job The Change lever is broken in the Clutch mechanism Table 3 10 Paper is always loaded without any print job Maintenance request error Count up of the protection counter Table 1 7 Special Setting Mode Fatal error indication HP sensor lever or PE sensor lever dose not move smoothly HP PE sensor is defective CR motor is defective ASF motor is defective M...

Страница 59: ...h has ink stain somewhere Table 3 15 Print quality is not good Table 3 5 Error Condition and possible cause Symptom Possible Cause Check table Table 3 6 Paper out error indication Step No Detail phenomenon Check point Remedy 1 ASF LD roller attempt to load the paper But paper is not loaded at all The LD roller seems slipping Check the surface of the LD roller if the micro pearl or severe smear is ...

Страница 60: ...medy Spur gear 35 2 Clutch tooth Tension spring 0 143 4 When the print data is sent to the printer ASF LD roller continue to load the paper even if the first paper is loaded to the PF roller and the paper is ejected while the ASF hopper is flapping 1 Check if the tip of the Change lever has any damage 2 Check if the Compression spring 2 94 comes off from the Change lever If it is no problem procee...

Страница 61: ... the Front paper guide 1 Check if the Front paper guide is floating from the assemble position 2 Check if there is any damage around the rear edge of the each rib on the Front paper guide If it is no problem proceed the next step 1 Assemble the Front paper guide front to the suitable portion and confirm the PF grounding spring is securing the Front paper guide 2 Replace the Front paper guide with ...

Страница 62: ...4 Check if the head FFC has any damaged 5 Check if the I C works correctly 1 Set the ink cartridge in place 2 Remove and then reset the ink cartridge in place 3 Connect the Head FFC 4 Replace the Head FFC 5 Replace the ink cartridge faulty CSIC 6 If the problem is not solved replace the Main board with new one Table 3 7 Paper jam error indication Step No Detail phenomenon Check point Remedy Table ...

Страница 63: ... one HP sensor lever Torsion spring 0 22 2 When the printer is turned on the CR unit dose not move at all in the power on sequence 1 Check if the CR motor connector is connected CN13 on the Main board 2 Check if the coil resistance of the CR motor is about 7 8ohm by using the tester Refer to Table 3 1 Motor Coil Resistance 1 Connect the CR motor connector to the CN13 on the Main board 2 Replace th...

Страница 64: ...the Change lever to the printer back side with the tweezer or small screw driver 3 Connect the ASF motor cable to CN11 on the Main board Replace the ASF motor with new one Table 3 11 Fatal Error indication Step No Detail phenomenon Check point Remedy Top housing Change lever 4 Ditto 4 If the CR lock lever is not released even if the ASF motor rotate in the power on sequence check if one of the gea...

Страница 65: ...73 6 and Combination Gear 16 21 6 are meshed correctly 4 If the problem is not solved replace the Main board with new one Spur Gear 73 6 Right Side of printer Combination Gear 16 21 6 PF Motor Table 3 13 Paper is not ejected completely without any error indication Step No Detail phenomenon Check point Remedy 1 Printing is normal But the paper is not ejected completely and the bottom area stay arou...

Страница 66: ...k pad in the CL sequence proceed the following check point 2 2 Remove the foreign material around the seal rubber parts 3 Replace the Cap assembly with new one 4 Set the Compression spring into the Cap assembly Cap seal rubber parts Compression spring 1 Ditto 5 Check if the Pump tube is connected to the bottom of the Cap assembly correctly 6 Check if the pump tube has a little slack between the Ca...

Страница 67: ... it is not recovered with CL Step No Detail phenomenon Check point Remedy Table 3 15 Print quality is not good Step No Detail phenomenon Check point Remedy 1 Uneven vertical banding is appeared against the CR movement direction 1 Check if each segment is printed correctly in the nozzle check pattern 2 Check if the surface of the CR guide shaft dose not have any sever stain 3 Check if the surface o...

Страница 68: ...paper is used according to the printer driver setting 2 Check if the correct head ID is stored in the EEPROM by using the Adjustment program 1 Use the suitable paper according to the driver setting 2 Input 13 digits code of the head ID into the EEPROM by using the Adjustment program Table 3 15 Print quality is not good Step No Detail phenomenon Check point Remedy CR Movement Direction 4 Ink stains...

Страница 69: ...C H A P T E R 4 DISASSEMBLYANDASSEMBLY ...

Страница 70: ...ctive goggles to protect your eyes from ink If ink gets in your eye flush the eye with fresh water and see a doctor immediately Always wear gloves for disassembly and reassembly to avoid iujury from sharp metal edges To protect sensitive microprocessors and circuitry use static discharge equipment such as anti static wrist straps when accessing internal components Never touch the ink or wasted ink...

Страница 71: ...remove the ink cartridge from the carriage unless this manual specifies to do so When transporting the printer after installing the ink cartridge be sure to pack the printer for transportation without removing the ink cartridge Use only recommended tools for disassembling assembling or adjusting the printer Observe the specified torque when tightening screws Apply lubricants and adhesives as speci...

Страница 72: ...e only specified tools to avoid damaging the printer Table 4 1 Tools Name Supplier Parts No Phillips Screw Driver No 1 EPSON B743800100 Phillips Screw Driver No 2 EPSON B743800200 Nipper EPSON B740500100 Tweezers EPSON B741000100 ROM puller EPSON 2035659 F749 One side open end wrench EPSON B741300100 ...

Страница 73: ...m Is paper advanced smoothly No paper jamming No paper skew No multiple feeding No abnormal noise Checked Not necessary Is the PF Motor at correct temperature Checked Not necessary Is the ASF motor at correct temperature Checked Not necessary Is the paper path free of any obstructions Checked Not necessary Adjustment Specified Adjustment Are all the adjustment done correctly Checked Not necessary ...

Страница 74: ... removal CR motor removal ASF frame unit removal PF motor removal LD roller unit removal Board assembly removal Printer mechanism removal page 77 page 99 page 104 page 85 page 88 page 85 page 86 page 102 page 100 page 84 page 110 Housing removal page 75 Printhead removal page 81 Housing lower cover removal page 80 Paper eject roller removal page 100 CR unit removal page 104 Main board unit removal...

Страница 75: ...oles in the bottom of the printer the screws are situated near to the rear Figure 4 2 Removing two screws for housing 2 Remove three screws C B S 3x6 F ZN from the rear of the printer Figure 4 3 Removing three screws for housing 3 Release hooks inside the left and right panels The housing can be detached by pushing it forward to the operator Figure 4 4 Removing the left side housing C B S TITE 3x6...

Страница 76: ...moval C A U T I O N Tightening Torque for screw C B S TITE 3x6 F ZN screw for housing front side 6 1kgf cm C B S 3x6 F ZN screw for housing back side 6 1kgf cm Ensure that C B S TITE 3 x 6 F ZN screws are used for the two screws on the front side of the printer The tips of these screws are rounded for user s safety To detach the housing pay attention since the monochrome panel FFC is installed FFC...

Страница 77: ...rom the printer Refer to Section 4 2 1 Housing Removal 2 Remove 3 screws C B S 3x6 F ZN and C B P 3x8 F ZN securing the Operation Panel Assembly Then remove the Operation Panel Assembly from the Printer Mechanism Figure 4 7 Removing 3 screws for Operation Panel Tightening Torque for Screw C B S 3x6 F ZN screw for ground screw on the housing 3 5 1 kgf cm To install the housing make sure to install ...

Страница 78: ...L board 5 Remove the Panel Shield Plate and the C408 PNL B board from the Operation Panel Assembly Tightening torque for screw C B S 3x6 F ZN screw for control panel cover 9 1 kgf cm C B P 3x8 F ZN screw for control panel cover 6 1 kgf cm C B P 3x8 F ZN Tightening torque for screw C B P 3x8 F ZN screw for printer panel board 6 1 kgf cm C H E C K P O I N T Removing the Operation Panel Assembly also...

Страница 79: ... C B S 3x6 F ZN located on the rear of the monochrome panel board and detach the panel shield plate Figure 4 9 Monochrome panel board 4 Remove the FFC from the monochrome panel board connector C A U T I O N Pay attention since the buttons of monochrome panel will be not fixed anymore if the monochrome panel board is detached C B P 3x8 F ZN Tightening torque for screw C B S 3x6 F ZN screw for monoc...

Страница 80: ...Sub Left Panel Housing from the printer mechanism Detach the stacker at the same time Figure 4 10 Sub Left Panel Removal 3 Remove three screws C B P 3x8 F ZN from the left housing lower cover and detach the cover Figure 4 11 Housing Lower Cover Left Removal Tightening torque for screw C B S 3x6 F ZN screw for Sub Panel Housing on the printer side 9 1 kgf cm C B P 3x8 F ZN screw for Sub Panel Housi...

Страница 81: ...emove the Housing from the printer Refer to Section 4 2 1 Housing Removal 2 Open the Cover Cartridge and remove the both black and color ink cartridge 3 Remove the Cover Cartridges for black and color ink cartridges from the CR Assembly 4 Remove the Head FFC Holder from the CR Assembly by releasing two hooks Figure 4 13 Removing the Head FFC Holder 5 Disconnect the Printhead s FFC from the connect...

Страница 82: ...the four portions indicated in the following Figure 4 15 Placing the Printhead s FFC Make sure that the Head Grounding Plate is installed to the carriage correctly Refer to Figure 4 16 Printhead installing the position pin the grounding plate Make sure that two holes of the Printhead correctly fit in the installing position pins Figure 4 16 Printhead installing the position pin the grounding plate...

Страница 83: ...or printhead 6 1 kgf cm B TITE SEMSW2 2 5x5 F ZB screw for printhead 2 0 5 kgf cm A D J U S T M E N T R E Q U I R E D When the Printhead is replaced with a new one following adjustments must be performed in the order below 1 Initial ink charge 2 Printhead ID input 3 Bi d adjustment When the Printhead is removed and reinstalled only the following adjustment is required 1 Head cleaning 2 Bi d adjust...

Страница 84: ...al 2 Using tweezers or a small screwdriver slide the CR Lock Lever to front and release the CR Lock Lever from the CR unit 3 Loosen the CR Timing Belt by pushing the Driven Pulley Holder to right using a screwdriver and remove the Timing Belt carefully from the pinion gear on the CR motor Refer to Figure 4 17 Removing the Timing Belt Figure 4 17 Removing the Timing Belt CR Timing belt ...

Страница 85: ...B P 3x8 F ZN and detach the Sub Left Panel Housing from the printer mechanism Detach the stacker at the same time Figure 4 19 Removing the waste drain inkpad unit 3 Lift the left side of printer and disengage the hook of waste drain ink pad unit then pull out the waste drain ink pad unit to remove A D J U S T M E N T R E Q U I R E D The Gap adjustment Bi d adjustment is required when the CR motor ...

Страница 86: ...3 1 Housing Lower Cover Left Removal 4 Remove five screws as shown here Figure 4 21 Printer mechanism removal C H E C K P O I N T When attaching the waste drain inkpad check that the tip of waste ink tube is correctly placed at the specified position of waste drain inkpad If the waste ink tube is not correctly attached ink leakage may occur Refer to Figure 4 20 Tip of the waste ink tube setting po...

Страница 87: ...on 4 2 6 Waste drain ink pad unit removal 4 Remove the printer mechanism from printer Refer to Section 4 2 7 Printer mechanism removal 5 Remove 10 screws to detach the board cover as shown below Figure 4 22 Board cover removal 6 Remove the right housing lower cover from the board assembly Refer to Section 4 2 3 2 Housing Lower Cover Right Removal C A U T I O N Be careful not to drop the waste drai...

Страница 88: ...G for the ground cable Figure 4 23 Panel shield plate removal Figure 4 24 Remove the screw securing each circuit board C408 C498 MAIN Remove nine screws C B S 3x6 F ZN Red Green circled screws 7pcs for Main board C P 3x6 F ZN Yellow circled screws 2pcs USB interface connector preview monitor connector C408 PSE Remove five screws C B S 3x6 F ZN Blue Green circled screws 5pcs for PSE board C B S 3x6...

Страница 89: ... 3x8 F ZN screw for AC120V cable 6 1kgf cm C B O 4x5 F ZG screw for Earth cable 11 1kgf cm When reassembling the main board tighten screws from lower numbers in Figure 4 22 Board cover removal When reassembling the main board and the circuit board tighten screws from lower numbers in Figure 4 24 Remove the screw securing each circuit board C H E C K P O I N T Check the Earth terminal and wire posi...

Страница 90: ...re 4 26 Taking Head FFC out from the FFC holder 3 Remove two screws C B S 3x6 F ZN securing the LD roller holder to the Main frame Figure 4 27 Removing two screws securing the LD roller holder LD roller shaft holder Head FFC holder Tightening Torque for screw C B S 3x6 F ZN screw for screw securing the LD roller holder 9 1 kgf cm C B S 3x8 F ZN screw for screw securing the LD roller holder 9 1 kgf...

Страница 91: ...Pull the LD roller shaft holder unit upward from the Main frame Figure 4 28 Pushing two hooks of the LD roller shaft holder 6 Remove the LD roller along with the Clutch mechanism from the LD roller shaft holder unit Figure 4 29 Removing the LD roller with Clutch mechanism Two hooks for LD roller holder Clutch mechanism LD Roller LD Roller shaft holder unit Panel shield plate ...

Страница 92: ...ear 23 2 Before assembling the LD roller shaft make sure that the round hole of the Clutch is set on the protrusion on the LD roller shaft as shown in the following figure Figure 4 31 Assembling the Clutch Assemble the LD roller shaft holder unit to the printer mechanism in the following procedure 1 Set the tip of the Change lever to the printer front side Figure 4 32 LD Roller shaft holder assemb...

Страница 93: ...g procedure 2 3 Make sure the PE detection lever is the same as the following figure Figure 4 34 Correct position of the PE detection lever Paper return plate PE detection lever Fasten the LD roller shaft holder with two screws C B S 3x6 F ZN in the order indicated in the following figure Figure 4 35 Fastening the LD roller shaft holder Tightening torque for screw C B S 3x6 F ZN screw for LD rolle...

Страница 94: ...ct the cable from the sensor connector Figure 4 36 Removing the HP or PE detection lever 4 Release each two hooks of HP and PE sensors securing them from the LD roller then remove the sensors HP detection lever PE sensor HP sensor Fixing nooks Fixing nooks PE detection lever C H E C K P O I N T Tor Make sure that the Torsion spring 0 22 is hung to the following suitable position Figure 4 37 Torsio...

Страница 95: ...ion 4 2 6 Waste drain ink pad unit removal 3 Remove one screw C B S P4 3x6 F ZN and detach the pump unit cover Figure 4 40 Pump unit cover removal Tor Make sure that the HP or PE sensor cable is placed to the suitable groove on the LD roller shaft holder Figure 4 39 Sensor cable placing position Make sure that the each sensor lever turn back smoothly by moving it after the sensor was assembled to ...

Страница 96: ...e Ink system frame 6 Release one hook for Cap assembly on the Ink system frame and take the Cap assembly out from the Ink system frame 7 Disconnect the waste drain ink tube carefully from the bottom of the Cap assembly Tightening torque for screw C B S P4 3x6 F ZN screw for pump unit cover 9 1 kgf cm C B S 3x6 F ZN screw for ink system frame and cap assembly 9 1 kgf cm C A U T I O N When the Ink s...

Страница 97: ...head cleaner with oil or grease When installing the Cleaner head set the rubber side black side facing toward the right side of the frame When installing the Cleaner head set the two square cut offs on the Cleaner head into the two hooks on the Ink system Figure 4 42 Cleaner Head Assembly Cleaner head Hook cut off C A U T I O N When replacing the Cap Assembly do not touch the sealing rubber portio...

Страница 98: ...nk system frame Make sure that the ink tube is placed along the following position Figure 4 44 Ink tube placing position After installing the Pump Assembly ensure that the cleaner parts move back and forth by rotating the Gear Combination Gear 37 6 44 4 Combination Gear 9 6 24 Spur Gear 14 4 38 4 Pump Unit Cap Assembly Ink Tube Tightening torque for screw C B S 3x6 F ZN screw for ink system frame ...

Страница 99: ...ree nuts M3 hexagon nut securing the ASF motor to the ink system frame Figure 4 45 Removing of ASF motor 5 Disconnect the ASF motor s connector cable from the CN11 on C408 C498 MAIN board 6 Remove the ASF motor from the ink system frame Hexagon Nut M3 C A U T I O N Pay attention not to damage gears when attaching the ink system unit Connect the ASF motor connector cable to the CN11 on C408 C498 MA...

Страница 100: ...he Plain washer and then remove the Combination gear 11 6 36 8 carefully Refer to Figure 4 47 Removing the combination gear 11 6 36 8 Figure 4 47 Removing the combination gear 11 6 36 8 C A U T I O N When removing the Front frame if the CR unit is out of the CR home position the nozzle surface of the Printhead may come in contact with Paper guide front as soon as the Front frame is removed This is...

Страница 101: ...ght side and remove the paper eject roller from the left side bushing Figure 4 49 Removal of Paper Eject Roller Paper Eject Roller Bush A D J U S T M E N T R E Q U I R E D When you replace the Frame front make sure to lubricate the specific amount of G26 to the Frame front Refer to the Chapter 6 Refer to Figure 6 5 Lubrication point 5 When you replace the Paper eject roller with new one make sure ...

Страница 102: ...3 Paper Eject Roller removal 5 Remove the Plain washer and then remove the Combination gear 11 6 36 8 carefully Refer to Figure 4 51 Removing the Plain washer and Combination gear 11 6 36 8 Figure 4 51 Removing the Plain washer and Combination gear 11 6 36 8 When you assemble the Front frame to the Printer mechanism set the CR unit to the left side and assemble the Front frame from the right side ...

Страница 103: ...he left frame Hexagon Nut M3 PF Motor C H E C K P O I N T Be sure that the PF motor cable is placed to the backward Refer to the Figure 4 53 PF motor cable Figure 4 53 PF motor cable Since the CN 12 is located near the rear edge of the Main board It is easier to use the tweezers or pincers to connect the cable to the CN12 Check that the connector cable of PF motor is securely connected to the CN12...

Страница 104: ...elt from the CR pinion gear Refer to Section 4 2 5 CR motor removal 3 Release the Printhead FFC from the cable holders on the LD roller shaft holder And disconnect the Printhead FFC from the connectors CN8 and CN9 on the Main board Figure 4 54 Taking Printhead FFC off 4 Remove the Lever PG s hook from the installation hole in the right side of the frame then remove the Lever PG Figure 4 55 Removal...

Страница 105: ...ight align it with the hole in the frame and remove it Figure 4 57 Removing bush parallel adjustment right 10 Remove the shaft CR guide together with the carriage unit from the frame 11 Remove the shaft CR guide from the carriage unit Tightening torque for screw C B S TITE P4 3x6 F ZN screw for screw securing the Bushing Parallelism adjustment right 7 1 kgf cm C B S TITE P4 3x6 F ZN Bushing Parall...

Страница 106: ... Figure 4 16 Printhead installing the position pin the grounding plate CR Slider CR Grounding Plate C H E C K P O I N T If the CR unit is disassembled or replaced with a new one make sure that the CR timing belt is set in the assembling groove correctly as following figure Figure 4 59 CR timing belt setting position A D J U S T M E N T R E Q U I R E D When you replace the CR unit with a new one lu...

Страница 107: ...e housing lower cover from the printer Refer to Section 4 2 3 Housing Lower Cover Removal 4 Remove the Paper Eject roller Refer to Section 4 2 13 Paper Eject Roller removal 5 Remove the CR unit Refer to Section 4 2 15 CR unit removal 6 Release the PF grounding spring from the Main frame Figure 4 60 Releasing the PF grounding spring 7 Release one hook located on the right edge of the Front paper gu...

Страница 108: ...k on the Front paper guide Figure 4 62 Remove the Front paper guide 9 Fit the protrusions of the Left PF roller bushing to the notches in the frames as shown in the following figure and remove the PF roller fasten spacer with tweezer Figure 4 63 Fit the protrusions of the Left PF roller bushing to each notches 10 As shown in Step 2 in the above figure slide the left roller bushing to the right sid...

Страница 109: ...that the hooks and the dowel pins on the Front paper guide is set to the fitting positions secure Slide the Front paper guide to the right side by pushing it and make sure that the right hook on the Front paper guide is locked to the frame securely If the Front paper guide is not fixed securely to the suitable position it may cause the paper jam problem Figure 4 65 Front paper guide assembling not...

Страница 110: ...two screws C B S TITE P4 3x8 F ZN screw C B S TITE P4 3x6 F ZN securing the ASF frame unit and remove the ASF frame unit from the printer mechanism Figure 4 66 Removing the screws securing the ASF frame 4 Remove the Spur gear 23 2 from the ASF frame Figure 4 67 Removing the Gears from ASF frame unit C B S TITE P4 3x8 F ZN C B S TITE P4 3x6 F ZN ASF Frame Unit A D J U S T M E N T R E Q U I R E D As...

Страница 111: ... the ASF Frame and the Hopper and remove the Hopper from the ASF frame Figure 4 68 Removing the Compression spring 2 67 6 Remove the Torsion spring 25 7 from the bottom of the ASF frame and the Pad holder Paper return plate Figure 4 69 Removing the Torsion spring 25 7 ASF Hopper Compression Spring 2 67 ASF Frame ASF Frame Torsion Spring 25 7 ...

Страница 112: ...frame ASF Frame Pad Holder When you replace the ASF frame or Hopper with the new one make sure to lubricate the specific amount of G26 into the groove on ASF frame Refer to Figure 6 6 Lubrication point 6 and Figure 6 4 Lubrication point 4 in the Chapter 6 Fasten the ASF unit C B S TITE P4 3x8 F ZN screw left screw in the following figure C B S TITE P4 3x6 F ZN screw right screw in the following fi...

Страница 113: ... 1 Remove the tilt screws and then tilt stand Figure 4 72 Tilt base removal 2 Remove two screws securing the monitor cable cover and detach the monitor cable cover Figure 4 73 Monitor cable cover removal 3 Remove the monitor cable from the hook on the rear case Figure 4 74 Monitor cable hook removal 4 Remove four screws securing the back case Figure 4 75 Removal of the back case attaching screws T...

Страница 114: ...se Refer to 4 3 1 2 Remove one screw securing the control board unit Figure 4 77 Removal of the control board unit attaching screw 3 Remove three connectors attached to the control board unit Figure 4 78 Connectors removal 4 Remove the control board unit Connector Screw C H E C K P O I N T CN602 and CN603 are open close type connectors A D J U S T M E N T R E Q U I R E D When the control board uni...

Страница 115: ...2 3 Remove two screws securing the panel assembly and then remove the panel assembly Figure 4 79 Panel assembly removal 4 Remove the hook from shield board and detach the shield plate and panel unit Figure 4 80 Panel unit removal Panel assembly Screws Hook Shield plate Panel unit A D J U S T M E N T R E Q U I R E D When the panel unit is replaced make sure to adjust as follows Brightness adjustmen...

Страница 116: ...C H A P T E R 5 ADJUSTMENT ...

Страница 117: ... quality between each printer mechanism it is necessary to set up the adjustment information for each mechanism It is therefore necessary to set up and save the correct mechanism information with the use of the adjustment program when the printer mechanisms the main circuit board and the printer head have been replaced Table 5 1 Adjustment items 1 2 3 4 5 6 7 8 Service item Parallel adjustments EE...

Страница 118: ... 5 1 Initial position of the bush and parallel adjustor 2 Set the lever and PG to the 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 C A U T I O N Do not scratch of otherwise damage the specially coated surfaces of the roller and PF unit the paper guide or the surface of the front rib Clean the gap gauge with a cloth mois...

Страница 119: ... covers the gauge on the left hand side 11 Set the lever and PG at the position at the front 12 Rotate the left hand bush and parallel adjuster towards you and set them so that they are one cog tooth towards the rear in the direction where the PG is widened from the position where contact is made with the printer head If the head and gauge come into contact from the beginning rotate the bush to th...

Страница 120: ...screen 2 Select the model name 3 Select the number of the port to which the Stylus PHOTO 895 785EPX 915 825 is connected to the computer C A U T I O N This program is specially designed for use on the Windows 98 Me platforms It will not run on DOS Windows 3 x 95 NT 2000 XP This program runs only on USB I F Table 5 2 Individual adjustment service program No Main Menu Service 1 Adjustment EEPROM ini...

Страница 121: ...ed and the program ended when the Quit button is clicked The screen will return to the model selection screen when the Next button is clicked Figure 5 6 Termination Status Click on the Statust button the status values of this printer is displayed in the center of the screen at the bottom like Figure 5 5 Maine menu C A U T I O N Do not start up the adjustment program before connecting the USB cable...

Страница 122: ...tial setting It is required to write the initial setting values into EEPROM when the Main board is replaced Figure 5 7 EEPROM Initial Setting Click on the OK button to write the initial setting values into EEPROM Click on the Check button customer and model name are displayed in the center of the screen at the bottom ...

Страница 123: ...ted and then click on the OK button If Check head ID has been selected the value will be displayed in the center of the screen at the bottom If Input Head ID has been selected the following screen will be displayed to enable the head ID to be entered Figure 5 9 Input head ID 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 t...

Страница 124: ...rinter If Check present adjustment value has been selected the value will be displayed in the center of the screen at the bottom If Input Bi D adjustment value has been selected a screen to enable the adjustment value to be entered will be displayed Adjustments are required if the result of the printed Bi D adjustment pattern looks like the examples shown below The lines are not straight Figure 5 ...

Страница 125: ...w Production process line number 3 digits PC number 2 digits Year month date 12 digits The personal computer s time data is used for this 0 1 digit A new USB ID is created during the repair process by adding an 8 digit serial number automatically generated by the adjustment program to the end of the existing 10 digit product serial number This new USB ID is then entered into the control circuit bo...

Страница 126: ... the current condition of memory card drive If an error message is displayed on screen replace the Main board 5 3 8 First Dot Position Adjustment With this function you can adjust the first dot position This adjustment is not necessary for repair as a rule However make this adjustment on user s request Click on the Print after setting A4 paper first dot position is printed In adjustment specify to...

Страница 127: ...k is to be used for head cleaning Black Unused 1 24 ink cartridge Color Unused 1 13 ink cartridge Figure 5 17 Head cleaning Click on the OK button to start the head cleaning procedure 5 3 10 Ink charge This function implements the initial ink replenishment process The following ink is to be used for ink replenishment Black Unused 1 8 ink cartridge Color Unused 1 4 ink cartridge Figure 5 18 Initial...

Страница 128: ...head and only the ink in 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 C A U T I O N 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...

Страница 129: ...ck on the OK button If Check the present counter value has been selected the following screen will be displayed Click on the OK button to display the counter value in the center of the screen at the bottom Figure 5 21 Check the protection counter The following screen will be displayed if Clear the protection counter value has been selected to enable the protection counter to be cleared Click on th...

Страница 130: ... 1 Click the OK button to start reading the data Figure 5 23 EEPROM backup data 2 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 24 Data backup checking window 3 Upon completion of successful backup EEPROM parameter backup is completed will be displayed in the central lower a...

Страница 131: ... paper Figure 5 26 Print A4 pattern Two pieces of A4 paper are used by the check pattern Set two pieces of A4 paper in the printer and then click on the OK button to commence printing Check the patterns printed on both pieces on paper If unacceptable areas exist make the necessary adjustments with the service program The followings show the printed samples Figure 5 27 Print sample 1 ...

Страница 132: ...when a tick has been added to EEPROM Data on the supplementary menu Figure 5 29 EEPROM data The 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 Specify the address and then click on the OK button A screen that will call out the EEPROM data from the printer will be displayed Change th...

Страница 133: ...ing is complete Turn the power of printer OFF 8 Wait for 10 seconds after turning the power of printer OFF 5 4 2 Firmware version check method This section describes the check method of the firmware in the memory card drive 1 Turn the power ON while pressing the Print key then print the detail environmental setting values 2 Check the firmware version in the memory card drive Refer to the Figure 5 ...

Страница 134: ...s 1 For actual images refer to the Table 5 4 Figure 5 31 Inspection image display procedure C A U T I O N Pay great attention not to mistake the firmware for inspection with the actual firmware since they have the same file name Table 5 3 Image pattern display order Order Image pattern Order Image pattern 1 16 level gray scales 5 Green raster 2 Color chart 6 Blue raster 3 Window 7 White raster 4 R...

Страница 135: ...ase of preview monitor detached 3 Display the 16 level gray scales following the Figure 5 31 Inspection image display procedure 4 Turn VR501 and check that the level is variable then set it at the central click position 5 Turn the VR500 with the precision screwdriver to adjust so that the 16 levels can be the center Figure 5 32 VR instrumentation C H E C K P O I N T To check the image observe from...

Страница 136: ...Gray scale Levels should be 16 levels Levels should be displayed step by step Color chart Color pattern should be 8 patterns Color order from left to right white yellow light blue green pink red blue black Window Surrounding of display section should be white Center of display section should be black Red raster Total area should be red Green raster Total area should be green Blue raster Total area...

Страница 137: ...C H A P T E R 6 MAINTENANCE ...

Страница 138: ... 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 C A U T I O N Never use chemical solvents such as thinner benzine and acetone to clean the exterior parts of printer like the housing These chemicals may deform or deteriorate the components of the printer B...

Страница 139: ...ter 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 the confirmation of the customer replace...

Страница 140: ...tion Type G 26 Lubrication Amount Φ1mm x 4points Use a syringe to lubricate After lubrication move the ASF hopper manually and smooth out the grease inside the ASF frame 5 Lubrication Point Specified both edges area on the Front frame Refer to Figure 6 5 Lubrication point 5 Lubrication Type G 26 Lubrication Amount Φ1mm x 200mm x 1 areas Use a syringe to lubricate After lubrication move the CR unit...

Страница 141: ...syringe to lubricate Table 6 2 Lubrication Point No Lubrication Type Point Remarks 13 Lubrication Point Cavity of the paper eject roller bush Right Refer to Figure 6 13 Lubrication point 13 Lubrication Type G 26 Lubrication Amount Φ2mm x Full circle Use a syringe to lubricate 14 Lubrication Point Roller paper stopper Refer to Figure 6 14 Lubrication point 14 Lubrication Type G 26 Lubrication Amoun...

Страница 142: ...ylus PHOTO 895 785EPX 915 825 Revision B Maintenance Overview 142 Figure 6 1 Lubrication point 1 Figure 6 2 Lubrication point 2 Figure 6 3 Lubrication point 3 Figure 6 4 Lubrication point 4 G 56 G 26 G 26 G 26 ...

Страница 143: ...lus PHOTO 895 785EPX 915 825 Revision B Maintenance Overview 143 Figure 6 5 Lubrication point 5 Figure 6 6 Lubrication point 6 Figure 6 7 Lubrication point 7 Figure 6 8 Lubrication point 8 200 mm G 26 G 26 G 26 ...

Страница 144: ...s PHOTO 895 785EPX 915 825 Revision B Maintenance Overview 144 Figure 6 9 Lubrication Point 9 Figure 6 10 Lubrication point 10 Figure 6 11 Lubrication point 11 Figure 6 12 Lubrication point 12 G 26 G 26 G 26 G 26 ...

Страница 145: ... PHOTO 895 785EPX 915 825 Revision B Maintenance Overview 145 Figure 6 13 Lubrication point 13 Figure 6 14 Lubrication point 14 Figure 6 15 Lubrication point 15 Figure 6 16 Lubrication point 16 G 26 G 26 G 26 G 26 ...

Страница 146: ...C H A P T E R 7 APPENDIX ...

Страница 147: ...10 HP sensor C408 PSE CN2 CN1 Printer Mechanism USB CN3 CN11 CN5 CN13 CN14 CN2 PE sensor PCMCIA Preview monitor Printer PNL Monochrome PNL AC power ASF motor Table 7 1 Connector Summary for C408 C498 MAIN Connector Function Table to refer to CN1 PCMCIA Table 7 2 CN1 PCMCIA CN2 Preview monitor Table 7 3 CN2 Preview Monitor CN3 USB I F Table 1 3 Connector Pin Assignment and Signals CN4 HP sensor Tab...

Страница 148: ...Bus cycle prolonged 62 BVD2 SPKR Battery voltage detection Audio digital waveform 63 BVD1 STSCHG Battery voltage detection Card status change 60 INPACK Input port response 33 WP IOIS16B Write protect I O port is 16 bits 43 VS1 Voltage sensing 1 57 VS2 Voltage sensing 2 36 CD1 Card detection 67 CD2 Card detection Table 7 3 CN2 Preview Monitor Pin Signal name I O Function 1 5V 5V power supply 2 5V 5...

Страница 149: ...CK Out Serial clock 6 GND Ground 7 CH Out Waveform selection signal of the MS and variable shots 8 COC In Color I C detection signal 9 RXD Out CSIC output 10 COB In Black I C detection signal 11 TXD In CSIC output 12 VDD3 3 Logic power supply 3 3V 13 GND Ground 14 COM Head drive pulse trapezoid wave 15 GND Ground 16 COM Head drive pulse trapezoid wave 17 GND Ground Table 7 8 CN9 Printhead Pin Sign...

Страница 150: ...hase drive signal B 4 ASF B Out Phase drive signal B Table 7 8 CN9 Printhead Pin Signal name I O Function Table 7 11 CN12 PF Motor Pin Signal name I O Function 1 PFA Out Phase drive signal A 2 PFB Out Phase drive signal A 3 PF A Out Phase drive signal B 4 PF B Out Phase drive signal B Table 7 12 CN13 CR Motor Pin Signal name I O Function 1 CRA Out Phase drive signal A 2 CRB Out Phase drive signal ...

Страница 151: ...tor Summary 151 12 INH Out LCD I F indication lights out 13 3 3V 3 3V power supply 14 CE Out LCD I F chip enable signal 15 5V 5V power supply 16 SCL Out LCD I F shift clock 17 DN Out LCD I F indication data Table 7 13 CN14 Monochrome PNL Pin Signal name I O Function ...

Страница 152: ...Reserved Bit0 Reserved 00H 00H 02H 05H Ink counter Cb 00H 00H 00H 00H 06H 09H Ink counter Cy 00H 00H 00H 00H 0AH 0DH Ink counter Cm 00H 00H 00H 00H 0EH 11H Ink counter Cc 00H 00H 00H 00H 12H 15H Ink counter Clm 000H 00H 00H 00H 16H 19H Ink counter Clc 00H 00H 00H 00H 1AH Ink counter A0 00H 00H 3 1BH 00H 00H 3 1CH Ink counter Rb0 00H 00H 3 1DH 00H 00H 3 1EH Ink counter Ry0 00H 00H 3 1FH 00H 00H 3 2...

Страница 153: ...PROM Address Map Address Explanation Setting QPIT setting Factory setting 30H Interface selection Bit7 Reserved Bit6 Reserved Bit5 Reserved Bit4 Reserved Bit3 USB Bit2 Reserved Bit1 Parallel Bit0 Auto 00H 00H 2 31H Interface time out 0 to 255 by second value of 0 means 10seconds 0AH 0AH 32H I F Speed Bit7 Reserved Bit6 Bit5 Reserved Bit4 Bit3 ECP speed Bit2 Bit1 Compatibility speed Bit0 00H 00H 33...

Страница 154: ... ID for VhU 1 n 40 00H 1 43H Head Actuator Rank ID for VhM2 1 n 34 00H 1 44H Head Actuator Rank ID for VhB 1 n 34 00H 1 45H Head Actuator Rank ID for AR 0 n 6 00H 1 46H Head Actuator Rank ID for IwB 30 n 70 00H 1 47H Head Actuator Rank ID for IwC 30 n 70 00H 1 48H Head Actuator Rank ID for IwM 30 n 70 00H 1 49H Head Actuator Rank ID for IwY 30 n 70 00H 1 Table 7 14 EEPROM Address Map Address Expla...

Страница 155: ... 0x88 Defined the following in this page A is Stylus PHOTO 895 B is Stylus PHOTO 785EPX C is Stylus PHOTO 915 D is Stylus PHOTO 825 0x00 A C 0x39 B D 0x38 0x89 0x00 0x00 0x8a 0x00 0x35 0x8b 0x00 0x00 0x8c 0x00 A C D 0x20 B 0x45 0x8d 0x00 0x00 0x8e 0x00 A C D 0x53 B 0x50 0x8f 0x00 0x00 0x90 iProduct 0x00 A C D 0x74 B 0x58 0x91 0x00 0x00 0x92 0x00 A C D 0x6f B 0x20 0x93 0x00 0x00 0x94 0x00 A C D 0x7...

Страница 156: ... EEPROM Address Map Address Field Description QPIT Setting Factory Setting 0xba 0x00 1 0xbb 0x00 0x00 0xbc 0x00 1 0xbd 0x00 0x00 0xbe 0x00 1 0xbf 0x00 0x00 0xc0 0x00 1 0xc1 0x00 0x00 0xc2 0x00 1 0xc3 0x00 0x00 0xc4 0x00 1 0xc5 0x00 0x00 0xc6 0x00 1 0xc7 0x00 0x00 0xc8 0x00 0x00 0xc9 0x00 0x00 0xca Interface descriptor The value of Device descriptor for USB Mass Storage Class bInterfaceClass bInter...

Страница 157: ...actory Setting 0xd4 Panel Settings Initial setting for Index print mode 1 Upper 4bits Default of Paper Type 0x00 Premium Glossy Photo Paper 0x10 Photo Quality Ink Jet Paper 0x20 Plain Paper 0x30 Photo Paper 0x40 Matte Paper Heavyweight Lower 4bits Default of Paper Size 0x00 89mm Roll 0x01 127mm Roll 0x02 4 Roll 0x03 210mmRoll 0x04 4 x6 0x05 A4 Letter 0x06 5 x7 0x07 8 x10 0x00 0x25 0xd5 Initial set...

Страница 158: ...e 0x50 20 Lower 4bits Default of Quality 0x00 High 0x01 Normal 0x00 0x00 0xdc Initial setting for Set print mode 3 Upper 4bits Default of PhotoEnhance 0x00 On 0x10 Off Lower 4bits Reserved Don t care 0x00 0x00 0xdd Reserved 0x00 0x00 0xde 0x00 0x00 0xdf 0x00 0x00 Table 7 15 EEPROM Address Map Address Field Description QPIT Setting Factory Setting 0xe0 Detailed environment Trimming 0x00 Enabled 0x0...

Страница 159: ...l value 2 Use the specific value to the product Available characters are 0 to 9 and A to Z 0xf1 0x00 0x00 0xf2 0x00 0x00 0xf3 0x00 0x00 0xf4 0x00 0x00 0xf5 0x00 0x00 0xf6 0x00 0x00 0xf7 0x00 0x00 0xf8 0x00 0x00 0xf9 0x00 0x00 0xfa 0x00 0x00 0xfb 0x00 0x00 0xfc 0x00 0x00 0xfd 0x00 0x00 0xfe 0x00 0x00 0xff 0x00 0x00 Table 7 15 EEPROM Address Map Address Field Description QPIT Setting Factory Setting...

Страница 160: ... ACCESS 111 SHIELD PLATE PANEL 113 STACKER ASSY ASP 114 FOOT 115 LOCK STACKER B 116 COMPRESSION SPRING 2 94 117 FOOT 121 C P SCREW B010103311 122 C B S SCREW B300204211 123 C B O SCREW 4X5 F ZG 124 C B S TITE R SCREW 3X6 F UC 125 C B P TITE SCREW 3X8 F ZN 126 C B S SCREW B300204311 127 C F S TITE 3X8 F ZN 128 C B S TITE P4 3X8 F ZN 129 C B S TITE P4 3X6 F ZN 131 GASKET PC CARD 132 BUTTON PRINT STA...

Страница 161: ...TIMING BELT 510 LEVER CHANGE 511 SHEET PROTECTION 512 FRAME FRONT D 513 PULLEY DRIVEN Table 7 16 Parts List Code Name 514 SHAFT PULLEY DRIVEN 515 BUSHING PULLEY DRIVEN 516 HOLDER PULLEY DRIVEN 517 COMPRESSION SPRING 5 85 518 COMPRESSION SPRING 19 6 519 INSULATOR MOTOR CR 520 SPACER INSULATOR 521 SPURGEAR 73 6 522 ROLLER PF 523 BUSH ROLLER PF RIGHT 524 BUSH ROLLER PF LEFT B 525 SPACER FASTEN ROLLER...

Страница 162: ...SP AW 1 6X10 F B 567 PLANE WASHER 5 2X0 2X10 S NA 568 U TYPE SPRING 5 2X0 13X10 S NA 587 C B S SCREW B300204211 588 COMBINATION GEAR 14 4 38 4 Table 7 16 Parts List Code Name 589 COMPRESSION SPRING 2 94 B 590 MOTOR ASSY ASF 591 TRAY IS B 592 POROUS PAD INK EJECT CAP LOWER D 594 SHEET PROTECTION SMALL 595 C B S TITE P4 3X6 F ZN 597 ROLLER DRIVEN 598 POROUS PAD TRAY IS UPPER B 599 POROUS PAD TRAY IS...

Страница 163: ...TE SEMS W2 2 5X5 F ZB 743 POROUS PAD INK EJECT UPPER B 744 STOPPER PAPER GUIDE LOWER 746 SUPPORT PLATE HOLDER SHAFT C Table 7 16 Parts List Code Name 747 IDLE ROLLER 748 HOLDER IDLE ROLLER 749 SPRING HOLDER IDLE ROLLER 750 DOUBLE SIDED TAPE 88X20 751 COVER ROLLER LD 752 GROUNDING PLATE HEAD FFC 753 HOLDER SHAFT 754 ROLLER LD 755 SHAFT ROLLER LD D 756 SHAFT ROLLER LD SUPPORT 757 EXTENSION SPRING 0 ...

Страница 164: ...No 01 747 747 748 749 750 185 184 183 182 181 117 331 For JPN 180 124 737 103 122 136 451 450 122 125 111 125 137 125 138 744 123 127 730 731 732 743 125 122 104 125 125 125 105 106 400 400 107 132 110 135 133 134 100 139 141 143 142 140 109 101 727 713 707 102 A B X C C B 115 ...

Страница 165: ...PT EPSON STYLUS PHOTO 785EPX 895 10304 Rev 01 No 02 706 144 710 736 114 122 114 114 145 131 122 704 705 122 121 800 801 803 806 803 802 708 718 709 122 122 122 122 122 122 200 300 330 122 122 712 122 122 122 103 702 701 703 122 X A For JPN 805 ...

Страница 166: ... 10304 Rev 02 No 03 511 545 544 544 544 544 544 545 545 545 741 595 546 547 549 549 511 546 545 546 546 560 530 546 587 547 545 512 587 546 564 595 552 567 545 543 543 543 566 565 550 568 535 537 536 565 532 700 738 531 740 739 563 559 717 740 533 125 729 728 For EAI LATIN 544 544 594 ...

Страница 167: ...16 539 726 539 540 539 539 540 723 722 721 715 556 556 587 503 505 126 725 507 542 541 542 542 541 765 764 719 763 761 502 587 590 506 734 541 551 759 758 757 753 724 520 519 510 523 589 588 504 509 592 591 501 129 754 756 746 No 04 Rev 08 10304 PM 790PT EPSON STYLUS PHOTO 785EPX 895 587 556 126 552 760 128 767 C408 MECH 043 598 599 600 ...

Страница 168: ...04 PM 790PT EPSON STYLUS PHOTO 785EPX 895 10304 Rev 02 No 5 08 09 10 07 For ESP ECC ETT 02 05 01 ...

Страница 169: ... FOOT 115 LOCK STACKER B 116 COMPRESSION SPRING 2 94 117 FOOT 121 C P SCREW B010103311 122 C B S SCREW B300204211 123 C B O SCREW 4X5 F ZG 124 C B S TITE R SCREW 3X6 F UC 125 C B P TITE SCREW 3X8 F ZN 126 C B S SCREW B300204311 127 C F S TITE 3X8 F ZN 128 C B S TITE P4 3X8 F ZN 129 C B S TITE P4 3X6 F ZN 131 GASKET PC CARD 132 BUTTON PRINT START PANTONE5487C 133 BUTTON STOP DICG 179 134 BUTTON FRA...

Страница 170: ...RIVEN 514 SHAFT PULLEY DRIVEN 515 BUSHING PULLEY DRIVEN 516 HOLDER PULLEY DRIVEN Table 7 17 Parts List Code Name 518 COMPRESSION SPRING 19 6 519 INSULATOR MOTOR CR 520 SPACER INSULATOR 521 ROLLER PF ASSY 523 BUSH ROLLER PF RIGHT 530 CARRIAGE C 531 SHAFT CR GUIDE 532 SLIDER CR 533 GROUNDING PLATE HEAD 535 ROLLER EJ MAIN ASSY 536 PAPER GUIDE FRONT 537 POROUS PAD PAPER GUIDE FRONT 539 TORSION SPRING ...

Страница 171: ... POROUS PAD TRAY IS LOWER C 600 HOLD SPRING FRAME CAP 700 PRINT HEAD 701 SHIELD PLATE M B 702 SHIELD PLATE M B UPPER 703 COVER SHIELD PLATE M B Table 7 17 Parts List Code Name 704 GROUNDING PLATE PC CARD 705 SHIELD PLATE P B UPPER 706 SPRING SHUTTER PC CARD 707 EDGE GUIDE E 708 HOUSING SUPPORT PC CARD 709 SHIELD PLATE P B SUPPORT 710 CAVER PC CARD 712 SHIELD PLATE M B SUPPORT 713 PAD BRAKE EDGE GU...

Страница 172: ...ER 746 SUPPORT PLATE HOLDER SHAFT C 747 IDLE ROLLER 748 HOLDER IDLE ROLLER B 749 SPRING HOLDER IDLE ROLLER 750 DOUBLE SIDED TAPE 88X20 751 COVER ROLLER LD 752 GROUNDING PLATE HEAD FFC 753 HOLDER SHAFT ASSY 754 ROLLER LD 757 EXTENSION SPRING 0 143 760 STOPPER LEVER CHANGE 767 GUIDE TUBE 800 MOUNTING PLATE ROLL PAPER HOLDER B 801 FRAME ROLL PAPER LEFT E ASSY 802 FRAME ROLL PAPER RIGHT E ASSY Table 7...

Страница 173: ...STYLUS PHOTO 825 915 C498 CASE 001 Rev 01 No 01 184 183 182 181 124 103 122 136 122 125 111 125 137 125 138 123 127 125 122 104 125 125 125 105 106 107 132 110 135 133 134 100 139 141 143 142 140 109 101 102 A B X C C B 115 ...

Страница 174: ...EPSON STYLUS PHOTO 825 915 C498 CASE 002 Rev 01 No 02 122 144 114 122 114 114 145 131 122 122 121 122 122 122 122 122 122 122 122 122 122 122 103 122 X ...

Страница 175: ...EPSON STYLUS PHOTO 825 915 331 451 450 A C498 ELEC 001 Rev 01 No 03 200 300 330 A ...

Страница 176: ...09 535 500 561 550 550 550 550 550 550 550 547 546 511 544 544 544 544 544 545 595 546 546 547 547 549 549 511 546 545 546 546 560 530 587 545 512 587 546 546 546 546 546 546 546 564 595 545 543 543 543 537 536 532 531 563 559 717 533 For EAI LATIN 544 594 ...

Страница 177: ...YLUS PHOTO 825 915 Rev 01 No 05 501 591 592 509 504 588 589 523 510 519 520 551 541 734 506 590 587 502 541 542 542 541 542 507 505 503 587 556 556 540 539 539 540 539 539 716 521 587 587 541 541 597 508 542 555 516 515 518 514 553 552 513 515 548 554 ...

Страница 178: ...ESPON STYLUS PHOTO 825 915 C498 MECH 003 Rev 01 No 06 117 737 744 730 731 732 743 707 747 747 748 750 727 713 741 700 738 740 739 740 125 729 728 749 ...

Страница 179: ...Except ETT 714 ESPON STYLUS PHOTO 825 915 C498 MECH 004 Rev 01 No 07 706 710 736 704 708 718 705 712 702 701 703 X ...

Страница 180: ...752 751 753 719 126 757 129 754 746 No 08 Rev 02 EPSON STYLUS PHOTO 825 915 126 760 128 C498 MECH 0051 715 ...

Страница 181: ...For ECC ETT 02 C498 PACK 001 Rev 01 No 9 EPSON STYLUS PHOTO 825 915 400 06 800 802 801 04 08 09 10 07 05 01 For 220v 240v ...

Страница 182: ...Tilt Screw Screw 2x12 Back Case Screw 2x6 Front Case Cover Sheet Panel Unit Shield Plate Screw 2x6 Control Board Unit Monitor Cable Cover Monitor Cable Screw 2x12 Tilt Bolt Tilt Stand ...

Страница 183: ...The electric circuit diagrams below are shown at the following pages C408 MAIN control circuit board 1 2 C408 MAIN control circuit board 2 2 C498 MAIN control circuit board 1 2 C498 MAIN control circuit board 2 2 C408 PSB C408 PSE C408 PNL circuit board C408 PNL B circuit board Preview monitor circuit board ...

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