Epson FX-880 - Impact Printer Service Manual Download

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FX-880 Service Manual

Chapter

4 DISASSEMBLY AND ASSEMBLY

Rev. A

4-4

4.2 DISASSEMBLY AND ASSEMBLY

This section provides the disassembly procedures. The basic order for disassembly is shown in
the flowchart below. The exploded diagrams are also provided in the APPENDIX. Refer to them to
see how components are engaged each other if necessary.

START

Pre-disassembly

Procedures

Printhead Removal

Upper Housing Removal

HP Detector Removal

Printer Mechanism

Removal

C229MAIN Board

Removal

C229PSB/PSE Board

Removal

Platen Removal

PF Motor Removal

CR Motor Removal

PG Detector

Removal

Release Detector

Removal

Front PE Detector

Removal

Rear PE Detector

Removal

Carriage Assembly

Removal

PF Gear Train Removal

Ribbon Drive

Assembly Removal

Rear Paper Guide

Assembly Removal

Printer Mechanism Disassembly

START

Main Compornents Disassembly

ROM Replacemant

Figure 4-1. Disassembly Flowchart

Summary of Contents for FX-880 - Impact Printer

Page 1: ...6 59 0 18 3LQ PSDFW RW 3ULQWHU EPSON FX 880 4008484 ...

Page 2: ...e contents of this manual However should any errors be deteced 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 on...

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 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 ON THE SERIAL NUMBER RATING PL...

Page 4: ...he theory of electrical and mechanical operations of the product CHAPTER 3 TROUBLESHOOTING Provides the step by step procedures for troubleshooting CHAPTER 4 DISASSEMBLY AND ASSEMBLY Describes the step by step procedures for disassembling and assembling the product CHAPTER 5 ADJUSTMENTS Provides Epson approved methods for adjustment CHAPTER 6 MAINTENANCE Provides preventive maintenance procedures ...

Page 5: ...REVISION STATUS Rev Date Page s Contents A 1997 09 30 All First release ...

Page 6: ...lt Setting Mode 2 1 11 1 2 6 1 Setting Items 1 11 1 2 7 EEPROM Clear Function 1 12 1 2 8 Bi D Adjustment 1 13 OPERATING PRICIPLES 2 1 MAIN COMPONENTS 2 1 2 1 1 C229MAIN Board 2 1 2 1 2 C229PSB PSE Board 2 1 2 2 PRINTER MECHANISM 2 2 2 2 1 Printhead 2 2 2 2 2 Paper Feed Mechanism 2 2 2 2 3 Carriage Movement Mechanism 2 2 2 2 4 Tractor Feed Mechanism 2 2 2 2 5 Platen Gap Adjustment Mechanism 2 2 2 2...

Page 7: ... Home Position Detector Removal 4 6 4 2 3 Pre disassembly Procedures 4 7 4 2 4 Upper Housing Removal 4 8 4 2 5 C229MAIN Board Removal 4 9 4 2 6 C229PSB PSE Board Removal 4 11 4 2 7 ROM Removal 4 12 4 2 8 Platen Removal 4 13 4 2 9 Printer Mechanism Removal 4 14 4 2 10 Printer Mechanism Disassembly 4 15 4 2 10 1 CR Motor Removal 4 15 4 2 10 2 PF Motor Removal 4 16 4 2 10 3 PF Gear Train Disassembly ...

Page 8: ...D RESETTING THE PRINTER 5 2 5 2 1 Platen Gap Adjustment 5 2 5 2 2 Factory Setting 5 4 5 2 3 Bi D Adjustment 5 6 MAINTENANCE 6 1 PREVENTIVE MAINTENANCE 6 1 6 2 LUBRICATION 6 2 APPENDIX 7 1 CONNECTOR SUMMARY 7 1 7 2 COMPONENT LAYOUT 7 6 7 3 EXPLODED DIAGRAM 7 9 7 4 DIMENSION AND WEIGHT 7 11 7 5 CIRCUIT DIAGRAM 7 12 ...

Page 9: ...PRODUCT SPECIFICATION C H A P T E R 1 ...

Page 10: ...ormal Copy High speed Draft 10cpi 80 410 345 Draft 10cpi 80 310 260 NLQ 10cpi 80 78 65 l When the power supply voltage drops to the lower limit the printer stops printing once and then starts to print rest data on that line again more slowly than before l When the head temperature rises to the upper limit the printer stops printing once If the head temperature falls down to the normal level it beg...

Page 11: ...led Jointing Line glue at the top or one side of form Table 1 5 Envelope Insertion Rear entry only Envelope No 6 No 10 Width 165mm 6 5 241mm 9 5 Length 92mm 3 6 105mm 4 1 Total thickness 0 16 0 52mm 0 0063 0 020 The difference of thickness at the printable area is within 0 25mm 0 0098 Weight 45 90g m2 12 24 lb Quality BOND paper plain paper air mail no glue at a flap not curled not folded not crum...

Page 12: ...Base sheet width 101 6 254 0mm 4 10 Base sheet length 101 6 558 8mm 4 22 Base sheet thickness 0 07 0 09mm 0 0028 0 0035 Total thickness 0 16 0 19mm 0 0063 0 0075 Label weight 68g m 2 17 lb Quality A very continuous form labels a very mini line labels or the same quality labels Table 1 8 Roll Paper Insertion Rear entry Width 216mm 8 5 Thickness 0 07 0 09mm 8 5 Weight 52 82g m 2 14 22 lb Quality Pla...

Page 13: ...ange 50 to 60 Hz Input frequency range 49 5 to 60 5 Hz Rated current 0 7 A Max 1 6 A Power consumption Approx 34 W ISO IEC10561 Letter pattern Insulation resistance Min 10 MW between AC line and chassis Dielectric strength AC 1000 V rms 1 min or AC 1200 V rms 1 sec between AC line and chassis 230 V version Rated voltage AC 220 to 240 V Input voltage range AC 198 to 264 V Rated frequency range 50 t...

Page 14: ...3 million characters Draft 10 cpi 14 dot chr SAFETY APPROVALS 120 V version Safety standards UL 1950 CSA C22 2 No 950 EMI FCC part 15 subpart B class B CSA C108 8 class B 230 V version Safety standards EN60950 VDE NEMKO EMI EN55022 CISRP pub 22 class B AS NSZ 3548 class B CE MARKING 230 V version Low Voltage Directive 73 23 EEC EN60950 EMC Directive 89 336 EEC EN55022 class B EN61000 3 2 EN61000 3...

Page 15: ...Pull tractor unit C80020 Roll paper holder 8310 Front paper guide C81402 Front sheet guide C81400 Serial Interface card C82305 C82306 32KB intelligent serial Interface card C82307 C82308 32KB intelligent Interface card C82310 C82311 Local Talk I F card C82312 32KB IEEE 1284 I F card C82313 Coax I F card C82314 Twinax I F card C82315 IEEE 1284 parallel I F card C82345 Ethernet I F card C82347 Accor...

Page 16: ...face cable to from the printer 2 Pause This switch alternates printer activity between printing and non printing states If this button is held down for over 3 seconds when the printer is in the non printing status the Micro Adjust function and Font selection are enabled If it is pressed again these function are disabled 3 Load Eject Loads the paper when the printer is out of paper Ejects the paper...

Page 17: ...LF FF turning on the printer Function Executes the Draft self test printing 2 Data dump mode Switches Load Eject and LF FF switches at same time while turning on the printer Function Executes the data dump function 3 Clearing the line counter value for the ribbon life in the EEPROM Switches Tear off Bin and Pause at same time while turning on the printer Function Clears the line counter value stor...

Page 18: ... Font Green Indicates the font selections Table 1 10 LED Status Printer status Font Tear Off Bin Pause Paper Out Pause On Paper out error On On Release lever error On Paper eject warning On Blinks Head hot warning Blinks Blinks Micro adjust Font selection Blinks Tear off According as paper path Bin selection According as bin selection Font selection According as font selection Fatal error Blinks B...

Page 19: ... n g e t h e s e t t i n g v a l u e H o l d i n g d o w n T e a r o f f B i n s w i t c h t u r n o n t h e p r i n t e r P u s h d o w n L o a d E j e c t s w i t c h t o s e l e c t t h e a i m e d l a n g u a g e P u s h d o w n T e a r o f f B i n s w i t c h F i n i s h Figure 1 4 Flowchart for Default Setting Mode 1 1 2 5 2 Setting Items Setting values available for the default setting mode...

Page 20: ... c t t h e a i m e d l a n g u a g e P u s h d o w n T e a r o f f B i n s w i t c h F i n i s h Figure 1 5 Flowchart for Default setting mode 2 1 2 6 1 Setting Items Setting values available for the default setting mode including factory settings are as shown in the following table Table 1 13 Setting Values Available for Default Setting Mode 2 Items Setting values BOLD font factory setting Page l...

Page 21: ...ractor 8 5 mm TOF adjustment value for CSF bin 1 8 5 mm TOF adjustment value for CSF bin 2 8 5 mm TOF adjustment value for rear manual insertion 8 5 mm TOF adjustment Value for front manual insertion 8 5 mm Bottom margin for rear tractor 11 inch Bottom margin for front tractor 11 inch Font Selection Draft 10 cpi Print direction setting Bi D I F mode selection Auto Auto I F waiting time setting 10 ...

Page 22: ...l i t i l e m e m o r y E N D H o l d i n g d o w n P a u s e s w i t c h t u r n t h e p r i n t e r o n a n d t h e f i r s t a l i g n m e n t p a t t e r i s p r i n t e d a l o n g w i t h t h e g u i d e f o r t h e a d j u s t m e n t S t e p B F i x t h e s e l e c t e d n u m b e r b y p r e s s i n g T e a r O f f B i n s w i t c h a n d t h e n e x t a l i g n m e n t p a t t e r i s p ...

Page 23: ...OPERATING PRICIPLES 3 7 5 ...

Page 24: ... CPU TMP96C141AF IC3 gate array E05B50 IC2 EEPROM AT93C46 IC4 1 4M PSRAM IC5 2 4M PROM IC7 driver elements and so on C N 3 P F M o t o r D r i v e r I C C R M o t o r D r i v e I C G a t e a r r a y E 0 5 B 5 0 P r i n t H e a d D r i v e r E E P R O M P S R A M P R O M C P U Figure 2 1 C229MAIN Component 2 1 2 C229PSB PSE Board The C229 PSB PSE power supply board consists of Transformer Switching...

Page 25: ... PF motor is transferred to the tractor unit via the release mechanism in the paper feed mechanism The release mechanism switches the PF motor torque between cut sheet feeding and continuous paper feeding by the release lever This printer is equipped with several tractor feeding methods front rear push tractor feeding front rear push pull tractor feeding and front rear pull tractor feeding which i...

Page 26: ... i t H P D e t e c t o r P r i n t h e a d P l a t e n R o l l e r P F M o t o r C R G u i d e S h a f t P G A d j u s t L e v e r R i b b o n F e e d M e c h a n i s m R e l e a s e L e v e r F r o n t P E d e t e c t o r P a r a l l e l i s m B u s h i n g P a r a l l e l i s m B u s h i n g R e l e a s e D e t e c t o r Figure 2 3 Printer Mechanis Outline ...

Page 27: ...wing table Table 2 2 Output Voltages and Applications Output Voltage Applications 5V 5 0 7A Logic lines Type B I F output is included Detectors Panel Switches LEDs 35V 6 0 8A CR Motor PF Motor Printhead The power supply circuit consists of the line filter circuit ZC RCC Zero Cross Ringing Choke Converter switching circuit and 5V chopper regulator IC The AC voltage is first input to the line filter...

Page 28: ...OM System control data Market TTL threshold Bi D setting Page length TOF etc containing PSRAM IC5 1M 4M bit Buffer and Working area of CPU Gate array ROM IC7 2 4M bit EPROM Mask ROM Control program containing SLA7024M IC8 CR Motor driver A2917SEB IC11 PF Motor driver Comparator IC12 Power off signal sensing E E P R O M P a r a l l e l I F T y p e B I F O p t i o n O p e r a t i o n P a n e l P F M...

Page 29: ...and transmitted to the printhead through the gate array as shown in the figure below H o s t c o m p u t e r C P U P r i n t h e a d d r i v e r c i r c u i t P r i n t d a t a c o n v e r s i o n I m a g e d a t a t r a n s f e r I n p u t b u f f e r I m a g e b u f f e r R A M G a t e a r r a y D a t a l a t c h a n d d a t a o u t p u t Figure 2 6 Data Flow ...

Page 30: ...TROUBLESHOOTING 3 7 5 ...

Page 31: ...roubleshooting Process Flowchart 3 1 1 Main Component Checking Point The following components can be checked by a simple measurement equipment such as a multi meter etc easily Table 3 1 Motor Coil Resistance Test Points Motor Connector Number Test Pin Number Test Method Set Meter to Ohms Disconnect Motor from Main Board and check it with Printer Power off Meter Reading PF Motor CN8 1 and3 2 and 4 ...

Page 32: ...printhead solenoid dot wire number 8 19 0 8Ω at 25 C Common pin C2 Test pin 8 Common pin C3 Test pin 2 6 Common pin C4 Test pin 5 9 Common pin C5 Test pin 3 7 A 2 C1 6 C2 C3 4 8 9 C4 7 C5 5 1 3 T T View A Printhead Printhead Connenctor Printhead Connenctor Figure 3 2 Printhead Connector Pin Alignment Table 3 3 Printhead Driver Test Pint Transistor Numbers Test Method Set meter to diodes Check powe...

Page 33: ... to 6 Meter should toggle between open and short HIGH PG 1 3 Printhead thermistor Place one lead on pin T and the other lead on other pin T to check the resistance Refer to Fig 3 2 Approx 14KΩ at 17 C 3 1 2 Error As this printer checks its condition by itself at power on when it finds any trouble it indicates it with error indication buzzer and LEDs The error Indications and countermeasures are sh...

Page 34: ...rom the home position at power on z Carriage returns to home position correctly but the printer then fails to enter the READY mode 3 6 Printing is faulty during self test but carriage operation is normal z No printing at all z Faulty printing some of the dots are not printing 3 7 Abnormal paper feeding The printer prints but feeds paper Incorrectly 3 8 Abnormal control panel operation When the LF ...

Page 35: ...eplace the fuse Is the new fuse also blown when power is turned on again Measure the 35V line at pin 7 or 8 of CN2 on C229PSB PSE Is output voltage normal Replace the C229 PSB PSE Measure the 5V line at pin 3 or 4 of CN2 on C229PSB PSE Is output voltage normal Replace the C229 PSB PSE Verify each motor and printhead solenoid resistance referring to Table 3 1 and Table 3 2 Are the resistance normal...

Page 36: ...connectors connecting the C229MAIN board and printer mechanism Reinsert the connectors correctly Is the fault solved END END END Dose the carriage move to the home position See the troubleshooting for Printer Mechanism Is the fault solved Replace the C229MAIN Board NO NO NO NO YES YES YES YES Figure 3 5 Flowchart 2 ...

Page 37: ...n the printer to start self test printing Is printing executed Are all connectors connecting the C229MAIN board and printer mechanism NO YES Reinsert the connectors correctly Is the fault solved END NO YES Is the vertical line aligned Is any dot missing Perform the Bi D adjustment Is the fault solved END NO YES Verify FFCs are properly inserted and have continuity If they are not defective replace...

Page 38: ...e connector CN5 or CN6 correctly Is the fault solved Dose the platen knob rotate smoothly when it is turned manually at power off Refer to the troubleshooting for Printer Mechanism Replace the C229MAIN board Is the fault solved Refer to the troubleshooting of Printer Mechanism Is the fault solved Replace the C229MAIN board END END END END NO YES NO YES YES NO YES NO NO YES NO YES Figure 3 7 Flowch...

Page 39: ...the switches have clicks Replace the Operation Panel Is the fault solved Replace the C229MAIN board Is the fault solved END Verify that the harness for the operation panel is properly inserted and have continuity If it is connected replace the harness END END NO YES NO YES YES NO Figure 3 8 Flowchart 5 ...

Page 40: ...r to the other troubleshooting items Verify the default setting Is the interface cable connected correctly Replace the interface cable Is the fault solved END Replace the C229MAIN board Is the fault solved Increase the setting position of the paper thickness lever Is the fault solved Adjust the platen gap Refer to chapter 4 END END NO YES YES NO NO YES YES YES NO NO Figure 3 9 Flowchart 6 ...

Page 41: ...and other value to be checked to evaluate the operation of each component Table 3 6 Repair of the C229PSB PSE Symptom Condition Cause Checkpoint Solution Fuse F1 is blown Verify whether the fuse is blown or not Replace the C229PSB PSE board Transformer T1 is open Verify the coil of transformer by a multimeter Replace the C229PSB PSE board The printer dose not operate at all 35V line is defective S...

Page 42: ...ctive Verify the waveform at pin 5 or 7 of PC1 Figure 3 12 Waveform of PC1 Replace the C229PSB PSE board The printer dose not operate at all 5V line is defective Regulator IC IC51 is defective Verify the waveform at pin 5 of IC51 Figure 3 13 OSC of IC51 Replace the C229PSB PSE board Verify the waveform at pin 9 or 10 of IC51 Figure 3 14 Output of IC51 Replace the C229PSB PSE board ...

Page 43: ...tance and other value to be checked to evaluate the operation of each component Table 3 8 Repair of the C229MAIN Symptom Condition Cause Checkpoint Solution The printer dose not operate at all The CPU dose not operate The reset circuit is not operational Verify the voltage waveforms for the 5VDC line IC1 pin 3 and for the reset signal IC1 pin 1 when the power is on 5V line RESET Figure 3 15 Reset ...

Page 44: ... is defective Verify the oscillator signal at pin 26 or 27 of the CPU IC3 Figure 3 17 Clock Signal of CPU Replace the C229MAIN board The carriage operates abnormally The carriage dose not operate at all IC8 is defective Verify the CR motor phase control signals at pin 5 6 16 17 and motor drive signals at pin 1 8 11 18 of IC8 Pin 5 of IC8 Pin 1 of IC8 Figure 3 18 CR Motor Control Signal Replace the...

Page 45: ... PF Motor Control Signal Replace the C229MAIN board Self test printing is abnormal The self test printing is not executed or a particular dot is not printed Any transistor of Q2 Q10 is defective Verify the printhead drive signal at the corrector and base of Q2 Q11 BASE of Q5 CORRECTOR of Q5 Figure 3 20 Pritnhead Drive Signal Replace the C229MAIN board Any transistor from Q11 to Q25 is defective Re...

Page 46: ...r rotates but the carriage dose not move The belt drive or driven pulley is defective Verify the pulleys which are broken or worn Replace the pulleys The timing belt is defective Verify the timing belt is set correctly to the carriage Reset the belt to the carriage Verify whether the timing belt is broken or not Replace the belt The carriage moves to the left slightly then stops The carriage movem...

Page 47: ... whether any foreign substance is put on Remove any foreign substance uniformly The PF motor dose not drive the mechanism Verify the mechanism whether any foreign substance is put on Remove any foreign substance The PF motor is defective Measure the motor coil resistance It should be about 16 ohms If the motor is shorted also verify the drivers on the main board Replace the PF motor and drivers if...

Page 48: ...ibbon mask is in the correct position Reinstall the ribbon mask The platen gap is not adjusted correctly Set the gap adjustment lever to the first position and verify the platen gap The correct platen gap is 0 365 0 015 Adjust the platen gap Refer to the chapter 5 Adjustment Problem Printing continues after the paper ends or when no paper is loaded Printing continues past the end of the page The P...

Page 49: ...DISASSEMBLY AND ASSEMBLY C H A P T E R ...

Page 50: ...t sink attached to the switching FET Q1 on the power supply board just after power off as it may be very hot Never touch the heat sink attaches to the switching FET Q1 while at AC power cable is connected to the AC outlet as it is not electrically isolated CAUTION To maintain efficient printer operation Use only the recommended tools for maintenance work Use only the recommended lubrications and a...

Page 51: ...ry Is the PF motor at the normal temperature Not too hot Checked OK Not necessary Paper Path Do all types of paper advance smoothly Checked OK Not necessary Is the tractor feeding paper smoothly Checked OK Not necessary Are all paper paths clear of obstructions Checked OK Not necessary Is the plate free of damage Checked OK Not necessary Ribbon Mask Is the ribbon mask free of damage Checked OK Not...

Page 52: ...iption CB Screw Cross recessed Bind head Screw CBS Screw Cross recessed Bind head S tight Screw CBB Screw Cross recessed Bind head B tight Screw CBP Screw Cross recessed Bind head P tight Screw CP Screw Cross recessed Pan head Screw CB O Screw Cross recessed Bind head Screw with Outside toothed lock washer Table 4 4 Screw Types and Abbreviations Head Body Washer assembled Top Side Cross recessed B...

Page 53: ...START Pre disassembly Procedures Printhead Removal Upper Housing Removal HP Detector Removal Printer Mechanism Removal C229MAIN Board Removal C229PSB PSE Board Removal Platen Removal PF Motor Removal CR Motor Removal PG Detector Removal Release Detector Removal Front PE Detector Removal Rear PE Detector Removal Carriage Assembly Removal PF Gear Train Removal Ribbon Drive Assembly Removal Rear Pape...

Page 54: ...FFC from the printhead and remove it WARNING Before disassembling or assembling the printhead disconnect the power supply cable from the AC power socket Failure to do cause personal injury Be careful with the printer when you handle it as it may be very hot just after printing 8670 17 After replace the printhead perform the platen gap adjustment Refer to Chapter 5 Head FFC Printhead Figure 4 2 Pri...

Page 55: ...ome Position Detector Removal 1 Remove the top cover 2 Release the hook attaching the HP detector to the printer mechanism and remove it 3 Disconnect the harness of the detector from the detector connector H o o k H a r n e s s H P D e t e c t o r Figure 4 3 HP Detector Removal ...

Page 56: ...ASSEMBLY top cover front cover paper eject cover knob and tractor unit T r a c t o r U n i t P a p e r E j e c t C o v e r Figure 4 4 DPre Desassembly CAUTION Remove the paper eject cover and the tractor unit by pushing and releasing the hooks at both sides When remount them verify to snap these hooks on the projecting parts ...

Page 57: ... release 2 hooks of panel assembly attaching to upper housing from front bottom side of upper housing and remove the panel away 6 Open the upper housing from front side and remove it away U p p e r H o u s i n g R e l e a s e L e v e r S H E E T R E L A S E C A P C B B 4 x 1 2 C B S M 3 x 6 P a n e l A s s e m b l y L o w e r C a s e P a n e l F F C P a n e l F F C C B S M 3 x 6 Figure 4 5 Upper H...

Page 58: ...the printer mechanism and lower housing and remove the shield cover 4 Disconnect the harnesses from the connectors CN3 CN4 CN5 CN6 CN7 CN8 CN9 CN10 CN11 and CN12 on the C229MAIN board 5 Remove 2 CBS M3 12 screws securing COVER CONNECTOR UPPER to the I F GROUNDING PLATE 6 Remove 6 CBB 3 12 screws securing C229MAIN Board to the lower case 7 Remove the GUIDE I F BOARD and GROUNDING PLATE I F UPPER 8 ...

Page 59: ... S 3 x 1 2 C O V E R C O N N E C T O R U P P E R L o w e r C a s e C 2 2 9 M A I N B o a r d C B B 3 x 1 2 C B B 3 x 1 2 C B B 3 x 1 2 C P M 3 x 8 G U I D E I F B O A R D G R O U N D I N G P L A T E I F U P P E R R O M C 2 2 9 P S B P S E P r i n t e r M e c h a n i s m I F G R O U N D I N G P L A T E Figure 4 6 C229MAIN Board Removal ...

Page 60: ... the connector CN1 on the C229PSB PSE Board 6 Remove 2 CBB 3 12 screws securing the C229PSB PSE Board to the Lower Case and remove the C229PSB PSE Board away WARNING Before disassembling assembling or adjusting the printer disconnect the power supply cable from the AC power socket Failure to do it cause personal injury Do not touch the heat sink attached to the switching FET Q1 on the power supply...

Page 61: ...r power off as it may be very hot Never touch the heat sink attaches to the switching FET Q1 while at AC power cable is connected to the AC outlet as it is not electrically isolated 1 Remove the PAPER GUIDE ASSEMBLY top cover front cover paper eject cover knob and tractor unit See Section 4 2 3 2 Remove the upper housing See Section 4 2 4 3 Remove 5 CBS M3 4 screws and 3 CBB 3 12 screws securing t...

Page 62: ...securing the COVER PLATEN 4 Rotating the teeth of the PLATEN SHAFT HOLDERs toward front disengage them from the Left Right Side Frames 5 Slide the PLATEN toward right a little and take it off upward 8670 17 If replace the plate perform the platen gap adjustment Refer to Chapter 5 C B S M 3 x 8 C o v e r P l a t e n P L A T E N P L A T E N S H A F T H O L D E R P L A T E N S H A F T H O L D E R L e...

Page 63: ...cover See Figure 4 6 4 Disconnect the harnesses from the connectors CN3 CN4 CN5 CN6 CN7 CN8 CN9 CN10 and CN11 on the C229MAIN board 5 Remove 2 CBB 4 12 screws securing the front frame to the lower housing and remove the front frame 6 Remove 4 mechanism fixing screws and remove the printer mechanism upward 8670 17 Once remove the printer mechanism verify the platen gap and the Bi D adjustment C B B...

Page 64: ...screws securing the CR motor to the motor bracket and remove the CR motor C R M o t o r S H A F T M O U N T C R C B M 3 x 6 T e n s i o n S p r i n g H o o k T i m i g B e l t C R M o t o r B r a c k e t F R A M E S U B R I G H T Figure 4 10 PF Motor Removal 8670 17 If replace the CR motor or TIMING BELT perform the Bi d adjustment See Chapter 5 CHECK POINT 9 Position the CR motor assembly on the ...

Page 65: ...he release lever to the vertical Rear Push tractor or forward Push tractor position 4 Remove 2 CBS M3 8 screws securing the PF motor to the FRAME SUB RIGHT and remove the PF motor CAUTION In case of the release lever in the Friction feeding position PF motor is not released P F M o t o r C B S M 3 x 8 F R A M E S U B R I G H T R e l e a s e L e v e r P o s i t i o n M o t o r H a r n e s s Figure ...

Page 66: ... U B R I G H T C B S 3 x 8 H e a d F F C I N T E R M I T T E N T G E A R L E V E R R E L E A S E S P U R G E A R 3 4 5 S P U R G E A R 2 1 S P U R G E A R 3 4 S P U R G E A R 3 4 5 S P U R G E A R 3 4 5 S P U R G E A R 2 7 C O M P R E S S I O N S P R I N G 2 0 0 P l a i n W a s h e r Figure 4 13 PF Gear Train Disassembly CHECK POINT 9 Verify to properly mesh the release lever with the teeth of INT...

Page 67: ... printer mechanism and remove the detector L E F T F R A M E C l i p P G D e t e c t o r Figure 4 15 PG Detector Removal 4 2 10 5 Release Detector Removal 1 Remove the printer mechanism See Section 4 2 9 2 Remove 2 clips of Release detector attached to the FRAME SUB RIGHT of the printer mechanism and remove the detector R e l e a s e D e t e c t o r F R A M E S U B R I G H T C l i p s Figure 4 16 ...

Page 68: ... r C l i p Figure 4 17 Front PE Detector Removal 4 2 10 7 Rear PE Detector Removal 1 Remove the printer mechanism See Section 4 2 9 2 Hold the printer mechanism horizontally 3 Release 2 clips of REAR PAPER GUIDE ASSEMBLY attached Rear PE detector 4 Release 2 notches of the REAR PAPER GUIDE ASSEMBLY attaching the detector to it slide the detector toward rear a little and then remove the detector do...

Page 69: ...RONT with the SHAFT CR GUIDE 8 Release the TIMING BELT from the 2 clips at the bottom of the carriage assembly C a r r i a g e A s s e m b l y O I L P A D S H A F T C R G U I D E B U S H I N G P A R A L L E L A D J U S T L E V E R G A D J U S T R e l e a s e L e v e r H e x a g o n N u t W a s h e r T I M I N G B E L T F R A M E F R O N T Figure 4 19 Carriage Assembly Removal 8670 17 If remove the...

Page 70: ...r See Section 4 2 10 4 6 Remove the harness of HP Detector 7 Remove 4 CBS M3 8 screws securing the LEFT FRAME of the printer mechanism and remove the LEFT FRAME 8 Remove the Head FFC from the FRAME REAR of the PRINTER MECHANISM 9 Remove 2 CBS M3 8 screws securing the FRAME REAR to the RIGHT FRAME and remove the REAR PAPER GUIDE ASSEMBLY 10 Push the clip on the bottom of the REAR PAPER GUIDE ASSEMB...

Page 71: ... Section 4 2 10 8 5 Remove the harness of PG Detector See Section 4 2 10 4 6 Remove the harness of HP Detector from the LEFT FRAME 7 Remove 4 CBS M3 8 screws securing the LEFT FRAME of the printer mechanism and remove the LEFT FRAME 8 Remove the CBC M3 8 screw and the CBB 3 8 screw securing the ribbon drive assembly 9 Release the ribbon drive assembly engaging with the ROLLER ASSEMBLY DRIVE and re...

Page 72: ...ADJUSTMENT 3 7 5 ...

Page 73: ...g Bi D Adjustment Printhead Removal or Replacement Printer Mechanism Replacement Printer Mechanism Removal Main Boar Replacement Timing Belt Replacement Platen Replacement Carriage Assembly Replacement CR Motor Replacement EEPROM Clear Note 1 means adjustment is required Note 2 means adjustment is not required 5 1 2 Adjustment Tools The following table shows the tools required for each adjustment ...

Page 74: ...e printhead onto the carriage assembly 5 Set the paper adjustment lever to the position 0 the second step position from rear 6 Rotate the SHAFT CR GUIDE so that the large countersink on the left edge of the shaft comes upward SHAFT CR GUIDE Carriage Assembly BUSHING PARALLEISM ADJUST Large countersink Small countersink Figure 5 2 SHAFT CR GUIDE Setting 7 Move the carriage assembly to the right edg...

Page 75: ...eft becomes under 0 02 mm 15 When the parallelism gap of right and left becomes less than 0 02 mm move the carriage assembly to the center of the printable area 16 Insert the thickness gauge between the printhead and the PLATEN and rotate the SHAFT CR GUIDE so that the platen gap becomes 0 365 0 015 mm 0 3 6 5 0 0 1 5 P L A T E N P r i n t h e a d Figure 5 3 Platen Gap 17 When the adjustment is co...

Page 76: ...arket setting menu appears Referring to the market list table move the cursor using or key to select your market from the list and press Return key To change the choice to the other market after selection you may press ESC key only The market setting menu appears again An example for EAI is shown below Table 5 3 Market List Destination Code Destination Code EAI EAI Latin USASTD EDG NLSP NLSP EURO ...

Page 77: ...ey several times to quite the program CAUTION As this adjustment program is just same as the check program in the factory and includes many other check items which are not needed for service you should not performed any items which are not described in this manual Otherwise the printer functions are not guaranteed The factory setting value is not installed into the EEPROM without this FF paper pri...

Page 78: ...e width Refer to 5 2 2 7 The main menu appears Move the cursor using or key to select 1 Bi D Adjust from the list and press Return key The test pattern printing starts 8 Then the Bi D adjustment menu appears Move the cursor using or key to select Bi D printing mode from the three printing modes and the or key to change the setting value 9 Press Space key and the four line Bi D pattern for the curr...

Page 79: ...t sides of the column 11 Press Return key to fix the adjustment value in each mode 12 Turn off the printer once to install the Bi D setting into the EEPROM 13 Press ESC key for several times to quite the program CAUTION As this adjustment program is just same as the check program in the factory and includes many other check items which are not needed for service you should not performed any items ...

Page 80: ...MAINTENANCE 3 7 5 ...

Page 81: ... and grease give is great especially in low temperature Therefore EPSON has been tested and analyzed various oil and grease extensively and chooses the best one for that print Table 6 1 Lubrication Type Name Quantity Available Part No Oil O 2 40 cc EPSON B710200001 Grease G 26 40 g EPSON B702600001 Table 6 2 Lubrication Points Ref No Lubrication Point Lubricant 1 2 holes for the SPUR GEARs 34 5 G ...

Page 82: ... L u b r i c a t i o n P o i n t R e f N o 1 Figure 6 1 Lubrication Point 1 P l a t e n G a p A d j u s t m e n t S l o t L u b r i c a t i o n P o i n t R e f N o 3 G a p A d j u s t m e n t L e v e r L u b r i c a t e a l l t h e s e s l o t s L u b r i c a t i o n P o i n t R e f N o 2 Figure 6 2 Lubricating Point 2 and 3 ...

Page 83: ...o 4 Figure 6 3 Lubricating Point 4 L u b r i c a t i o n P o i n t R e f N o 5 L u b r i c a t i o n P o i n t R e f N o 6 L u b r i c a t i o n P o i n t R e f N o 7 Figure 6 4 Lubricating Points 5 6 and 7 R e l e a s e S h a f t L u b r i c a t i n g P o i n t 8 Figure 6 5 Lubricating Point 8 ...

Page 84: ...APPENDIX 3 7 5 ...

Page 85: ...r CN9 CR Motor Release Detector CN10 CN11 PG Detector CN12 Panel AC Printhead Figure 7 1 Cable Connections Table 7 1 Connector Summary Board Connector No Pin Description C229MAIN Board CN1 36 Parallel I F CN2 36 Type B I F Option CN3 10 DC input Power On Off CN4 2 HP Detector CN5 3 Rear PE Detector CN6 2 Front PE Detector CN7 16 Printhead Thermistor CN8 4 PF Motor CN9 5 CR Motor CN10 2 Release Det...

Page 86: ...not ready to accept data 12 O PE When this signal is HIGH the printer is in a state of paper out error 13 O SLCT This signal is always HIGH when the printer is power on 14 I AFXT Not used 15 NC Not connected 16 GND Signal ground 17 Chassis Chassis ground 18 O Logic H This line is pulled up to 5V through 3 9 kΩ 19 30 GND Signal ground 31 I INIT This signal initializes the printer 32 O ERROR This si...

Page 87: ...24 GND Ground 25 O A3 Address bus bit 3 26 O A2 Address bus bit 2 27 O A1 Address bus bit 1 28 O A0 Address bus bit 0 29 I O D7 Data bus bit 7 30 I O D6 Data bus bit 6 31 I O D5 Data bus bit 5 32 I O D4 Data bus bit 4 33 I O D3 Data bus bit 3 34 I O D2 Data bus bit 2 35 I O D1 Data bus bit 1 36 I O D0 Data bus bit 0 Table 7 4 Connector Pin Assignment CN3 Pin No I O Signal Name Function 1 O PSC 2 I...

Page 88: ...AD1 1 Head Data 5 O HEAD5 5 Head Data 6 O C5 3 7 Common 7 O HEAD7 7 Head Data 8 O C4 5 9 Common 9 O HEAD9 9 Head Data 10 O HEAD8 8 Head Data 11 O HEAD4 4 Head Data 12 O C3 3 Common 13 O C2 8 Common 14 O HEAD6 8 Head Data 15 O C1 1 4 Common 16 O HEAD2 2 Head Data Table 7 9 Connector Pin Assignment CN8 Pin No I O Signal Name Function 1 O PFA PF Motor phase A 2 O PF A PF Motor phase A 3 O PFB PF Moto...

Page 89: ...o I O Signal Name Function 1 I PG1 PG Detector signal 2 GND Ground Table 7 13 Connector Pin Assignment CN12 Pin No I O Signal Name Function 1 5V 5V 2 O POUTL Paper Out LED 3 O PAUSE Pause LED 4 O TOFFL Tear Off Bin LED 5 O FONT2L Font LED 6 O FONT1L Font LED 7 I FONTSW Font Switch 8 I LFFFSW FF LF Switch 9 I LDEJSW Load Eject Switch 10 I PAUSSW Pause Switch 11 I PSC Power Switch Control signal 12 ...

Page 90: ...FX 880 Service Manual Appendix Rev A 7 6 7 2 COMPONENT LAYOUT Figure 7 2 C229MAIN Board Component Layout ...

Page 91: ...FX 880 Service Manual Appendix Rev A 7 7 Figure 7 3 C229PSB Board Component Layout Figure 7 4 C229PSE Board Component Layout ...

Page 92: ...FX 880 Service Manual Appendix Rev A 7 8 Figure 7 5 C229PNL Board Component Layout ...

Page 93: ...140 541 140 140 108 140 120 500 105 126 126 126 106 127 127 127 450 122 104 138 129 606 135 EXPLODED DIAGRAM FOR FX 880 1 109 125 125 113 127 133 127 117 200 110 111 400 400 373 137 132 112 112 115 100 116 126 126 128 101 107 101 125 125 125 127 123 123 Figure 7 6 Exploded Diagram 1 ...

Page 94: ...618 581 123 610 601 607 595 597 593 590 616 501 598 594 526 535 535 535 528 531 620 533 527 530 525 534 578 532 602 619 572 617 623 570 568 575 588 582 557 564 559 565 565 614 571 502 610 610 610 606 585 610 610 610 589 573 524 521 584 583 510 561 562 503 613 613 587 599 610 551 549 547 543 550 536 650 622 621 EXPLODED DIAGRAM FOR FX 880 2 505 505 558 505 505 619 Figure 7 7 Exploded Diagram 2 ...

Page 95: ...FX 880 Service Manual Appendix Rev A 7 11 7 4 DIMENSION AND WEIGHT 4 1 5 3 5 0 1 5 4 Figure 7 8 Case Outline Drawing ...

Page 96: ...FX 880 Service Manual Appendix Rev A 7 12 7 5 CIRCUIT DIAGRAM For the circuit diagram of the following circuit boards refer to the following pages C229PNL BOARD C229MAIN BOARD C229PSB PSE BOARD ...

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