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EPL-7500

Chapter5 Adjustment

Rev. A

5-1

5.1 ADJUSTMENT

This chapter explains adjustment procedure. Adjustment should be done
after components and parts are exchanged.

5.1.1 Interlock Switch Position Adjustment

If the printer power does not turn on when the top cover is closed even at
the power switch on, perform the position adjustment of interlock switch by
the following procedures.

1. Remove right cover, left cover and front cover.
2. Loosen the screw which is fixing interlock switch, and close the top cover

completely.

3. Move the interlock switch up and down, and tighten the screw at the

position that the switch turns on.

Refer to Chapter4 Disassembly and Assembly.

Summary of Contents for EPL-5700

Page 1: ...6 59 0 18 3DJH 3ULQWHU EPSON EPL 5700 4009173 ...

Page 2: ...e contents of this manual However 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 o...

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: ...the 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 1998 05 06 All First release ...

Page 6: ...1 3 PANEL OPERATION 1 8 1 3 1 Power Switch 1 8 1 3 2 Control Panel 1 8 1 3 2 1 Switches 1 8 1 3 2 2 Lights 1 8 1 3 3 List of Panel Setting 1 9 1 3 4 Special alternative Operation 1 13 1 3 4 1 Operation at Power On 1 13 1 3 4 2 Up dating ROM Program 1 14 1 4 OPTIONS AND CONSUMABLE 1 15 ...

Page 7: ...or 2 5 2 1 4 3 Cassette Type Sensor 2 5 2 1 5 Laser Exposure 2 6 2 1 5 1 Sub Scanning Direction Vertical scanning direction 2 6 2 1 5 2 Main Scanning Direction Horizontal scanning direction 2 7 2 1 5 3 Printable Area 2 7 2 1 6 Charging Process 2 7 2 1 6 1 Overview Refer to Figure2 9 on the next page 2 7 2 1 6 2 Cleaning OPC drum 2 8 2 1 7 Developing 2 9 2 1 7 1 Overview 2 9 2 1 7 2 Function of eac...

Page 8: ...TING PRINCIPLES 2 16 TROUBLESHOOTING 3 1 OVERVIEW 3 1 3 2 ELECTRIC CHECK POINT 3 1 3 2 1 Rating of Power Fuse F1 3 1 3 2 2 Coil Resistance of Main Motor 3 1 3 2 3 Checking Sensors 3 2 3 3 PRINTER CONDITION 3 3 3 3 1 Indication 3 3 3 3 1 1 Status Conditions 3 3 3 3 1 2 Error Conditions 3 4 3 3 1 3 Warning Conditions 3 6 3 3 1 4 Service Req Error 3 7 3 3 2 Paper Jam Sensor 3 9 3 3 2 1 Overview 3 9 3...

Page 9: ...3 Troubleshooting Print Quality Problems 3 12 3 4 4 Horizontal Lines 3 14 DISASSEMBLY AND ASSEMBLY 4 1 OVERVIEW 4 1 4 1 1 Precaution for Disassembly and Assembly 4 1 4 1 2 Recommended Tools 4 2 4 1 3 Specification for Screws 4 2 4 1 4 Work Completion Check 4 2 4 2 DISASSEMBLY PROCEDURE 4 3 4 2 1 Preparation Before Disassembly 4 4 4 2 2 Right Cover Removal 4 5 4 2 3 Paper Feed Roller Removal 4 6 4 ...

Page 10: ... Unit Removal 4 18 4 2 17 Disassembling the Fusing Unit 4 19 4 2 17 1 Heater Lamp Removal 4 19 4 2 17 2 Thermister Thermostat Removal 4 21 4 2 17 3 Paper Eject Sensor PS3 4 22 4 2 18 Transfer Roller Exchange 4 23 4 2 19 Power Board Removal 4 24 4 2 20 High Voltage Board Removal 4 26 4 2 21 Paper Sensor PS1 Removal 4 27 4 2 22 Main Motor Removal 4 27 4 2 23 Driving Unit Removal 4 28 4 3 DISASSEMBLY...

Page 11: ...Switch Position Adjustment 5 1 MAINTENANCE 6 1 MINTENANCE 6 1 6 1 1 User Maintenance 6 1 6 1 2 Service Maintenance 6 1 APPENDIX 7 1 CONECTOR PIN ASSIGMENTS 7 1 7 2 CIRCUIT BOARD COMPONENT LAYOUT 7 6 7 3 EXPLODED DIAGRAM 7 7 7 4 CIRCUIT DIAGRAM 7 17 ...

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Page 13: ...PRODUCT DESCRIPTION 3 7 5 ...

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Page 15: ...r transfer Fixing Heat roller system Density regulator Developer bias variation system user can regulate PRINT SPEED Resolution 600 dpi Print Speed 8ppm A4 LTR B5 A5 6 9ppm legal 1 Same with optional cassette 2 Regarding printing with custom size non standard size paper the printing speed will become faster because cleaning takes place automatically First print 19 seconds A4 LTR 18 2 seconds B5 17...

Page 16: ...le 1 2 Paper Handling Cont Paper supply method Capacity Supplied paper size Permissible paper thickness Manual Feed slot 4 1 sheet Standard or Custom paper sizes that fall within the range of usable sizes given below 100x148 215 9x 355 6 mm Normal paper 60 to 90g m 2 16 to 24lb Thick paper 90 to 157g m 2 Special paper labels OHP Lower cassette 1 5 500 sheets 1 A4 LG LT Normal paper 60 to 90g m 2 1...

Page 17: ...on ENVIRONMENTAL CONDITION Usage conditions including expendable parts Temperature 10 to 35 C Humidity 15 to 85 without condensation Air pressure altitude 760hPa or more 2500 meters or less Surface angle 1 degree incline or less for both front to rear and side to side Luminosity 3000 lux or less not exposed to direct sunlight Environmental conditions for storage and transportation Normal 0 to 35 C...

Page 18: ...o breakdowns 120V model AC 1000V duration of one surge 200V model AC1500V duration of one surge 7 Leakage current 3 5mA or less 120V model 3 5mA or less 200V model DIMENSIONS Dimensions Main unit 397 W mm x 463 L mm x251 H mm Weight Approximately 7 5Kg not including expendable or optional parts RELIABILITY AND DURABILITY Product life Approximately 180000 printed pages or five years whichever comes...

Page 19: ...DA NCDRH Class 1 200V model TÜV GS EN60825 NEMKO EN60825 EMC Table 1 5 EMC Model Name Applicable certification 100V model CNS 13438 CISPR22 Taiwan FCC Part15 Subpart B Class B CSA C108 8 Class B 200V model EC EMC Directive 89 336 PEC EN55022 Class B EN61000 3 2 EN61000 3 3 EN50082 1 AS 3548 Australia Power consumption In compliance with international Energy Star standards Others Toner Do not effec...

Page 20: ...ICATION Useable paper types are mentioned below PAPER TYPES Normal Paper 60g m 2 to 90g m 2 16 lbs to 24 lbs Copy bond and recycled paper in general use Special Paper Labels Japanese official post cards OHP film Color paper thick paper 90 to 157 g m 2 special DTP paper letterhead Note Ibs ream weight ib 500 pages 17x22 g m 2 1g m 2 0 2659763 lbs CAUTION The paper type listed below can not be used ...

Page 21: ...an print characters However this is limited to those paper types used generally X Can not feed Option PAPER SIZE Table 1 7 Paper Size and Paper Feeding Paper Type Paper Size Paper Tray Manual Feed Slot Optional Lower Cassette A4 210x297 O O O A5 148x210 O O JIS B5 182x257 O O Letter 8 5 x 11 O O O Normal Half Letter 5 5 x 8 5 O O Paper Legal 8 5 x 14 O O O EXE 7 25 x 10 5 O O Government Legal 8 5 ...

Page 22: ...h Use this button in combination with the Continue button in order to stop printing and reset Warm boot In the reset condition if both Alt switch and Continue switch are pressed more than 5 seconds the printer goes to Reset All condition 1 3 2 2 Lights On Line LED green Displays a non flashing light when the printer is on line indicating the printer can receive print data When the printer is off l...

Page 23: ... light is flashing 1 3 3 List of Panel Setting This printer has no LCD display in the control panel so it is not possible to make function settings from the control panel excluding toner left quantity reset and OPC drum life reset by the special operation and status sheet Function settings can be performed using RCP remote control panel In the Table below note that the bold and italic value in the...

Page 24: ...f Normal Maximum Minimum Table 1 11 Function Setting for the Control Panel Cont Menu Item Value Serial Menu Word Length Baud Rate Parity Stop Bit DTR Xon Xoff Buffer Size 8 7 9600 19200 38400 57600 300 600 1200 2400 4800 None Even odd 1 2 On Off On Off Robust Normal Maximum Minimum AUX Menu 2 Buffer Size Normal Maximum Minimum ESC Page Menu 4 Auto CR Auto FF CR Function LF Function FF Function Err...

Page 25: ...u Item Value ESCP2 Menu Font Pitch Condensed T Margin Text CGTable 7 Country Auto CR Auto LF Bit Image ZeroChar Courier Prestige Roman Sans serif Roman T Orator S Sans H Script OCR A OCR B 10cpi 12cpi 15cpi Prop Off On 0 40 0 50 1 50 inch step 0 05 inch 1 62 17 66 16 available Max 81 Lines PcUSA Italic PcMultiln PcPortugue PcCanFrenc PcNordic PcTurkish2 PcE Europe BpBRASCII BpAbicomp USA France Ge...

Page 26: ...g is only possible to change by EJL command but if printer receive this command internal setting will force to set to Normal setting Thick Select when using narrow media such as envelopes postcards etc 6 Can only be selected in GLlike mode 7 When the NLSP font DIMM is added the selectable SymSet and CGTable for RCP for DOS are added Following symbol set will be added For LJ4 mode Pclcelandic 8 PCL...

Page 27: ...r lamp and memory lamp are turned on following function will start Hexadecimal Damp Turn on the power while pressing the Form Feed switch then the printer will enter damp mode The received data is converted by hexadecimal ASCII and printed out This function is canceled by Warm Boot see page 1 8 or turning power again Toner Reset Turn on the power while pressing On Line switch and Form Feed switch ...

Page 28: ...ts turns off after up date process is completed normally 6 Press On line switch and re boot the printer CAUTION If you fail to up date the program ROM correctly Service Req Error appears and the printer will not be able to start Solution when error occurs If up dating RON fails error is indicated and goes to Check SUM error service req error without appropriate operations Write Error Because of de...

Page 29: ...rational memory module Refer to Reference Guide EPSON Script Level 2 module C83229 Optional Interface Cards Optional Ethernet Card 32KB Serial Interface Card 32KB Parallel Interface Card Coax Interface Card Twinax Interface Card AppleTalk Interface Card GPIB Interface Card C82357 C82362 C82307 C82310 C82314 C82315 C82312 C82313 Note The asterisk is a substitute for the last digit of the product nu...

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Page 31: ...OPERATING PRINCIPLES 3 7 5 ...

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Page 33: ...rollers gears and main motor which causes driving power in order to load the paper Paper Eject Roller F U Main Motor Paper Eject Roller F D Back Up Roller Heat Roller Transfer Roller Charging Brush Sleeve Roller Toner Feed Roller Paper Feed Roller Second paper feed Roller Second paper feed unit Connecting Gear OPC Drum Figure 2 1 Mechanism Parts ...

Page 34: ...cond paper feed unit 500 sheets can be installed The paper once loaded is carried to the transfer roller Fusing roller Paper eject roller Paper eject tray Exposure Eject Fusing Charging Developing Transfer Face down paper eject Print head Manual feed Multi paper feed tray Second paper feed cassette optional Paper feed Face up paper eject Paper feed Figure 2 2 Paper Path ...

Page 35: ...tates 2 At the same time the push down cam also rotates then the tray lifting plate stands up The paper in the tray is carried into the printer by the paper feed roller see figure2 4 3 Separation pad method is used in order to separate each paper and prevents of feeding the second paper together 4 Since there is no paper size sensor mechanism in the multi paper feed tray the printer detects the le...

Page 36: ...is transferred from the connecting gear on the main motor Paper feed method is the same as from multi paper feed tray As separation method separation pad method is used for multi paper feed tray but the separator claw is used for the second paper feed unit The separator claw is the method that uses elasticity between the separator installed at the paper feed cassette and the paper Only one paper i...

Page 37: ... Cassette Type Sensor Cassette type sensor switch with sector shaped lever is mounted on the second paper feed unit When the cassette for each paper size is inserted the switch presser on the right side of each cassette pushes the lever according to the paper size Then the cassette type sensor switch is turned On or Off This switch is the 3 consecutive switch and the printer distinguishes the cass...

Page 38: ...aser diode Control Board Figure 2 7 Exposure Mechanism 2 1 5 1 Sub Scanning Direction Vertical scanning direction 1 After the printer receives printing signal the polygon motor M2 and main motor M1 rotate and paper feeding starts 2 After the fed paper tip turns ON the paper feed sensor TOD signal main control circuit sends VIDEO signal to the print head and printing starts 3 When the print startin...

Page 39: ...d by rotation brush and pre charging film Electric potential on the surface of OPC drum after charging is about 800 V Charging by rotation brush and pre charging film has low rate of ozone occurrence by corona discharge and also has low voltage because of direct charging to the OPC drum Also it is excellent in uniformity of charge potential and stability Rotation brush is rotated when the driving ...

Page 40: ...d to minus by charging bias 1280VDC to the rotation brush At this time reversed bias 1KV is charged to the transfer roller 2 Toner moves down to the OPC drum side whose electric potential is low and is collected in the development part It goes to this cleaning at the idling state when the cover is closed after the paper jam is cleared Also it goes to this cleaning sequence at the size error 15msec...

Page 41: ... Toner sending roller Transfers toner to the sleeve roller part Sleeve roller Rotates resin sleeve Resin sleeve Transfers toner to the OPC drum surface OPC drum Creates image on the surface by laser beam Performs development by resin sleeve and transports the developed image to the paper surface Toner blade Put the toner thin and evenly on the resin sleeve Charges toner minus between toner blade a...

Page 42: ...A 8 µ A is initial value according to the paper type and printing duty This can improve the effectiveness of the transfer especially under the high temperature with high humidity environment Left over electric potential on the paper is removed by the discharge needle Since the left toner from OPC drum attach to the transfer roller it is necessary to clean the transfer roller In the cleaning the re...

Page 43: ...ntrols the temperature of the fusing part The heater lamp is 450W 3 different voltages are used according to the destination 100V 120V and 230V If the heat lamp is not turned off even when the thermister detects abnormally high temperature thermostat turns off the heater current as soon as the temperature of the heat roller reaches 195 C and prevents the heat roller from increasing its temperature...

Page 44: ...waiting mode Unless the upper cover is opened or error happens this mode is maintained Table 2 3 Heat Roller Temperature Control Temperature control before it is interrupted Temperature right after the temperature control started Less than 50 C More than 50 C less than100 C More than 100 C Mode1 Mode1 Mode2 3 or power is off Mode1 Mode2 Mode3 2 1 9 3 Prevention of paper bent from the fusing Someti...

Page 45: ...n Eject Face down Eject Roller Face up Eject Face up Eject Roller Paper Eject Disengage Guide Paper Eject Disengage Lever Figure 2 16 Paper Eject Mechanism Face down eject Paper is ejected to the face down tray located upper side of the printer Face up eject Paper is ejected to the optional face up tray Face up paper eject is available even without optional face up tray Since the resistance is lea...

Page 46: ...to each following unit Rotation charge brush Charging voltage Sleeve roller Developing bias voltage Toner regulation board Developing blade voltage Toner collecting board Collecting blade voltage Transfer roller Transfer voltage Main motor Driving power source for the printer Paper empty sensor PE1 Detects if there is any paper or not Paper in Low Paper Feed sensor PS1 Detects the paper is fed In ...

Page 47: ... the temperature of the fusing part increases abnormally 195 C Following shows position of electric parts functions of the optional second paper feed unit Paper Feed Solenoid Cassette Type Sensor Switch Relay Board Paper Empty Sensor Figure 2 18 Locaion of Electric Parts in the Second Paper Feed Cassette Table 2 7 Function of Electric Parts of Second Paper Feed Cassette Name Function Paper feed so...

Page 48: ...uter Receiving printing data and sending status Processing printing data Analyzing command and generating video signal Sending video signal to engine controller Monitoring panel or switch conditions Main functions of the engine controller Receiving the video signal and sending the engine status Monitoring sensors Controlling each mechanism of the engine Controlling the optional lower cassette CPU ...

Page 49: ...t function control Video I F control communication with engine controller Program ROM Mask ROM CN3 DIMM module which stores control program Flash ROM C215PROG is built in the initially mass produced printers Mask ROM C215PROGB is built in later mass produced printers DRAM IC14 15 2 16Mbit x16 s are mounted and operates as standard memory Mask ROM IC5 6 2 8Mbit x16 s are mounted and stores font dat...

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Page 51: ...TROUBLESHOOTING 3 7 5 ...

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Page 53: ...tive or not 3 2 1 Rating of Power Fuse F1 Table below shows rated power fuse F1 Table 3 1 Rated Power Fuse Power Voltage F1 100V type 8A 125V 200V type 4A 250V 3 2 2 Coil Resistance of Main Motor By measuring the coil resistance of the main motor the motor can be checked if it is working all right or not Following table shows how to measure the coil resistance Table 3 2 Coil Resistance of the Moto...

Page 54: ...d Sensor Connector CN210 Pin1 and Pin2 High Paper out Low Paper in Paper Eject Sensor Connector CN208 Pin2 and Pin3 High Paper out Low Paper in Interlock switch Power board connector CN3 On Off by switch operation Thermister Connector CN202 Pin1 and Pin2 Analog output 1 7MΩ 20 C Paper empty sensor in the second paper feed unit Connector CN211 Pin5 and Pin6 High Paper in Low Paper out Cassette type...

Page 55: ...pen Paper and Continue lights On Error Paper out Paper light flashes and Continue light On Error Paper set Paper and Continue lights are on Error Table 3 5 Printer Message List Cont Condition Indication Status Toner out Toner and Continue lights On Error Memory Overflow Memory light On Continue light flashes Error Print Overrun Memory light On Continue light flashes Error Service Req Error All lig...

Page 56: ...r jam is cleared and warming up is completed the jammed page s print data is automatically printed Printer Open The top cover is open Close the top cover Paper Out There is no paper in the specified paper source Load paper of the indicated size into the source Paper Set This error appears if Size Ignore is off in the printer driver and the paper loaded in the tray does not match the required paper...

Page 57: ...e 3 6 Memory Module RAM Capacity Function No RAM installation Printing up to 600dpi is possible 4MB installation Printing is possible in all printing conditions Print Overrun The required time to process the print data exceeds the print engine speed because the current page is too complex Turn on Page Protect on the printer setting dialog of the panel menu of your printer driver or use the remote ...

Page 58: ...pecial C10 241 3 9 1 21 C5 JIS B5 I B5 Paper DL 220 HLT C5 A5 C5 229 C10 HLT DL C6 162 I B5 250 GLT EXE JIS B5 C10 Toner Low The printer is almost out of toner or the toner left level reaches 0 and printing will be stopped This error is canceled by pressing Continue switch Exchange with new toner and close the top cover Pressing Continue switch resets the toner counter automatically However even i...

Page 59: ...PU Error z z z z CPU Error address misalignment z z z CPU Error address misalignment z z z z CPU Error z z z z CPU Error z z z z z CPU Error z z Note z means light is on Table 3 9 Service Req Error List cont Cause Paper Light Toner Light Memo ry On line Form Feed Contin ue Controller Related Errors CPU Error z z z CPU Error z z z CPU Error z z z z CPU Error z z z CPU Error z z z z CPU Error z z z ...

Page 60: ...signal is not detected within 0 8 second after polygon motor is turned on The rotational number of polygon motor does not reach the range of 0 5 within 5 5 seconds after the polygon motor is turned on After polygon motor is turned on and the rotational number of polygon motor settles within 0 5 that rotational number reaches 5 5 seconds continuously and go beyond 3 Abnormal Fusing When the thermis...

Page 61: ...r starts rotating by turning on the paper feed solenoid from multi paper feed tray or second paper feed unit If there is no paper in the fusing mechanism the heater light is not turned off but other driving is turned off 3 3 2 2 Paper Jam Sensor Conditions The paper feed sensor is not turned On within 2 8 seconds after the paper feed starting in other words the paper feed roller starts rotating by...

Page 62: ...the paper recommended paper No Use the recommended paper 3 Is the paper bent or wrinkle or wet Yes Exchange the paper Advise the user about paper storage 4 Is the paper feed roller deformed Or is there any dirt by paper dust or friction Yes Exchange the paper feed roller 5 Does the actuator of the paper feed sensor work normally No Check the lever operation and re assemble Exchange the necessary p...

Page 63: ...rd Exchange the power unit 2 Is there continuity between Pin1 and Pin3 of the Connector CN2 on the fusing unit No Exchange the fusing unit Exchange he heater light Exchange the thermostat Yes Exchange the main control board Exchange the power unit 3 4 2 4 Power can not be turned on Table 3 16 Remedy for Abnormal Laser 4 Check Item Remedy 1 Is the power switch On No Turn the power switch On 2 Is th...

Page 64: ...ssion Exchange the print head Exchange the main control board Improper transfer Exchange the transfer roller Exchange the high voltage board Exchange the main control board Table 3 18 Print Quality Problems Symptom Possible cause Solution All black Abnormal laser emission Exchange the Print head Exchange the main control board Figure 3 3 All black Abnormal charging Exchange the high voltage board ...

Page 65: ...igh voltage board Note Since the life span of the fusing unit and the transfer roller are same if you need to exchange either one of them make sure to exchange both of them Table 3 20 Print Quality Problems Symptom Possible Cause Solution Foggy background Defective developing bias Exchange the high voltage board Figure 3 7 Foggy background End of life of OPC drum Exchange drum cartridge White line...

Page 66: ...can be determined by measuring its space between lines as it is shown in Table 3 21 Space Space Figure 3 10 Horizontal Lines with Spaces Table 3 21 Finding defective parts Parts Name Diameter of each roller Space Toner cartridge Sleeve φ15 8mm 49 6mm Drum cartridge OPC drum φ30mm 94mm Transfer roller Roller φ16mm 50 2mm Fusing unit Heat roller φ20mm 62 8mm Back up roller φ21 6mm 67 8mm ...

Page 67: ...DISASSEMBLY AND ASSEMBLY 3 7 5 ...

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Page 69: ...the tools which have high possible reflection rate into the laser path Especially handle those tools carefully at the users places WARNING If you can not turn off the power because your service requires power take off rings and watches and wear laser protective goggles When you using the protective goggles use the one which meets following specifications Maximum Power 5mW Output wave length 780 81...

Page 70: ... is made to the printer use the check list shown below to confirm that all works are completed properly and the printer is ready to return to the user Table 4 3 Check Sheet Category Parts Check Points Status Operation Control Panel Are the indication of LED LCD and their operations normal OK NG Heater lamp Does it operate normal OK NG Status sheet printing Does the printer print normally OK NG Dat...

Page 71: ...which are not mentioned Start Right Cover Removal Control Panel Removal Front Cover Removal Left Cover Removal Top Cover Removal Rear Cover Removal Fusing Unit Removal Disassembling the Fusing Unit Heater Lamp Removal Transfer Roller Exchange Paper Feed Roller Removal Paper Empty Sensor PE1 Removal ROM Exchange Interlock Switch Removal Main Control Board Removal Print Head Unit Removal Paper Feed ...

Page 72: ...n 1 Push the release button located left side of the top cover and open the top cover 2 Take the toner cartridge out of the printer 3 Take the drum cartridge out of the printer 4 Remove the paper feed tray 5 If the optional face up tray is attached remove it Top Cover Release Button Drum Cartridge Toner Cartridge Paper Feed Tray Figure 4 2 Preparation Before Disassembly ...

Page 73: ...ng the right cover toward back a little bit remove the cover to the right side Hook of Shield Cover Right Cover Tab Figure 4 3 Right Cover Removal CHECK POINT 9 When assembling the right cover attach it so that two hooks of the cover can match with the corresponding holes on the printer side shield cover Refer to figure4 4 Corresponding Holes of the Shield Cover Hooks of Right Cover Figure 4 4 Ins...

Page 74: ...ller back side is in the hole of the shaft 4 2 4 Paper Empty Sensor Removal PE1 1 Release the hook connecting the paper feed roller cover and the printer opening the paper feed roller cover and remove it sliding it to the left side 2 Release the hook securing the paper empty sensor to the mechanism frame of the printer and remove it upward 3 Remove the sensor harness from the paper empty sensor CH...

Page 75: ...over of the main control board and remove the cover ROM Cover CBB 3x6 Figure 4 7 ROM Cover Removal 3 Push the lever of ROM connector securing ROM board and remove the ROM board 4 Insert the new version s ROM board to the connector ROM Board Lever Figure 4 8 ROM Board Removal CHECK POINT 9 If ROM is Flash ROM C215PROG up date ROM program by power on operation on the control panel See Chapter 1 ...

Page 76: ... one is on the top surface CS 3x8 Control Panel Figure 4 9 Fixing Screws for Control Panel 3 Push the control panel back once and release the connection between the front cover and hook of the control panel Then lift up the control panel a little bit 4 Remove the harness of the control panel from the connector on the main board and remove the control panel Control Panel Harness of the Control Pane...

Page 77: ...hooks one is located right bottom side the other is located left bottom securing the front cover to the printer mechanism by inserting the shaft of the driver from the holes which are for installing the optional second paper feed unit and remove the front cover from the bottom side Left Edge Hook Right Edge Hook Holes for installing the second paper feed unit Figure 4 12 Lower Edge Hooks of the Fr...

Page 78: ... from the switch 5 Remove one CS screw 3x5 securing inter lock switch bracket to the printer 6 Remove two CP O screws securing the inter lock switch to the bracket and remove the inter lock switch CP O 2x10 Interlock Switch CS 3x6 Interlock Switch Bracket Interlock Switch Harness Figure 4 13 Interlock Switch Removal 8670 17 In case of removing the inter lock switch make sure to perform interlock s...

Page 79: ...shield cover In the figure CBS screws are marked with Shield Cover Figure 4 14 Shield Cover Removal 5 Remove harnesses which are connected to the connector on the main control board 6 Remove ten CS screws 3x6 securing the main control board to the printer 7 Remove one CP fixing screw for serial interface 3x6 and two CP fixing screws 3x6 for parallel interface and remove the board Main Control Boar...

Page 80: ...panel See section 4 2 6 4 Remove the front cover See section 4 2 7 5 Remove two CS screws 3x8 securing the left cover to the printer 6 Lift up the left cover a little bit and remove it to left side CS 3X8 Left Cover Figure 4 16 Left Cover Removal CHECK POINT 9 When installing the left cover install it so that 2 hooks of the left cover are inserted to the corresponding holes on the printer side ...

Page 81: ...e the harness of the print head unit from CN205 and CN209 on the board 8 Remove one CSB screw 3x8 and four CS screws 3x6 securing the print head unit to the printer 9 Remove the harness from two clamps which are securing the harness to the printer and remove the print head unit CHECK POINT 9 If you need to remove the fixing screw located at the bottom of the print head unit two CS screws insert th...

Page 82: ...SB screws 3x8 securing the left paper feed guide holder to the left frame of the printer 8 Remove one CSB screw 3x8 securing the paper feed guide holder and paper feed guide 9 Release the connection between the paper guide and holder pushing down the left paper guide holder and remove the paper guide 10 Locate the printer s back side bottom so that printer s bottom side comes side Remove two CSB s...

Page 83: ... 13 Paper Feed Solenoid Removal 1 Remove the right cover See section 4 2 2 2 Remove the paper empty sensor See section 4 2 4 3 Remove the control panel See section 4 2 6 4 Remove the front cover See section 4 2 7 5 Remove the left cover See section 4 2 10 6 Remove paper feed unit See section 4 2 12 7 Remove one CSB screw 3x8 securing the paper feed solenoid to the paper feed unit and remove the pa...

Page 84: ...e control panel See section 4 2 6 4 Remove the front cover See section 4 2 7 5 Remove the left cover See section 4 2 10 6 Push both left and right hinges of the top cover toward arrow directions in figure 4 21 and remove the top cover Top Cover Hinge Figure 4 21 Top Cover Removal 8670 17 If top cover is exchanged be sure to perform Interlock Positioning Adjustment Refer to Chapter5 ...

Page 85: ...ection 4 2 6 4 Remove the front cover See section 4 2 7 5 Remove the left cover See section 4 2 10 6 Remove the top cover See section 4 2 14 7 Remove two CBB screws 3x8 three CS screws 3x6 and one CP screw with out teethed washer securing the rear cover to the printer 8 Lift up the rear cover once and remove it CBB 3x8 CS 3x5 CS 3x5 CS 3x5 CP 3x6 Rear Cover Out teeth washer Figure 4 22 Rear Cover ...

Page 86: ... Remove the left cover See section 4 2 10 6 Remove the top cover See section 4 2 14 7 Remove the rear cover See section 4 2 15 8 Remove harness of the paper eject sensor at the fusing unit from the connector part of the paper eject sensor 9 Remove the harness of the thermister from the relay connector 10 Remove the harness of the heater lamp from the clamp of the paper guide and also remove it fro...

Page 87: ...2 Remove two CSB screws 3x8 securing the fusing unit 3 Release the right and left hooks connecting the fusing unit and separate the fusing unit CSB 3x8 CSB 3x8 Figure 4 24 Separation of the Fusing Unit 4 Remove the backup roller 5 Refer to Figure4 25 1 Move the front fusing guide board to the left side once 2 remove the right side of the guide board 3 remove the left side of the guide board 1 2 3 ...

Page 88: ...e fusing unit 7 Remove the heater lamp CP O 3x6 CSB 3x8 Heater Lamp Terminal Board Heat Roller Voltage Indication Figure 4 26 Heater Lamp Removal CHECK POINT 9 Do not touch the glass surface of the heater lamp with your bare hands When installing the heater lamp the side that indicates lamp voltage should come to the terminal board side ...

Page 89: ...In order to avoid damaging the heat roller surface by the fusing separation claw perform disassembly and assembly of the roller by lifting it up a little bit 1 2 3 Heat Roller Driven Gear Figure 4 27 Heat Roller Removal 5 Remove four fusing unit separation claws 6 Remove one CSB 3x8 screw securing the thermister to the fusing unit and remove the thermister from the fusing unit 7 Remove two CP O sc...

Page 90: ...Harness of the Thermister Back side of the fusing unit Figure 4 29 Locating Harness of the Thermister 4 2 17 3 Paper Eject Sensor PS3 1 Remove the fusing unit See section 4 2 16 2 Release the connection between the sensor and lever moving the lever of the paper eject sensor 3 Release the hook of sensor securing the sensor to the fusing unit and remove the sensor Sensor Lever Sensor Hook Paper Ejec...

Page 91: ...t support 1 Remove fusing unit See section 4 2 16 2 Remove two CBB screws 3x8 securing the front cover transferring to the printer Remove the front cover transferring Transfer Roller Holder Transfer Roller Shaft Support Shaft Support CBB CBB Front Cover Transferring Figure 4 31 Transfer Roller Removal 3 Push down the lever of right and left transfer roller supports white toward front side and remo...

Page 92: ...r See section 4 2 14 8 Remove the rear cover See section 4 2 15 9 Remove the harness of the heater lamp from connector CN2 on the power board Refer to section 4 2 16 10 Remove the harness of the inter lock switch from connector CN3 on the power board 11 Remove the harness of the main control board from connector CN207 on the main board 12 Remove two CP O screws 3x6 and two CS screws 3x6 securing t...

Page 93: ...ews 3x8 one CP O screw 3x6 one CP screw 4x6 and one out teethed washer securing the power board to the power installation board and remove the power board CS 3x8 CS 3x8 CP O 3x6 CP 4x6 Out teethed washwer Power Board Power Installation Board Figure 4 34 Power Board Removal ...

Page 94: ...ve the top cover See section 4 2 14 8 Remove the rear cover See section 4 2 15 9 Remove the power unit See section 4 2 19 10 Remove the harness coming out of the main control board from the connector of the high voltage board 11 Remove two CBB screws 3x8 securing the high voltage board to the transfer unit 12 Remove the high voltage board and earth plate CHECK POINT 9 When installing the high volt...

Page 95: ...sor Hook Paper Feed Sensor Sensor Harness Figure 4 36 Paper Feed Sensor Removal 4 2 22 Main Motor Removal 1 Remove the right cover See section 4 2 2 2 Remove the paper empty sensor See section 4 2 4 3 Remove the control panel See section 4 2 6 4 Remove the front cover See section 4 2 7 5 Remove the shield cover of the main control board See section 4 2 9 6 Remove the left cover See section 4 2 10 ...

Page 96: ...2 10 7 Remove the top cover See section 4 2 14 8 Remove the rear cover See section 4 2 15 9 Remove the fusing unit See section 4 2 16 10 Remove the power unit See section 4 2 19 11 Remove the screw for main motor See section 4 2 22 12 Remove three CS screws 3x6 one paper feed fixing screw two CSB screws 3x8 and remove unit securing the driving unit to the printer Parts marked with 13 Remove seven ...

Page 97: ...3 1 Second Paper Feed Roller Exchange 1 Lift up the tab of the paper feed roller 1 2 Move the paper feed roller to 2 direction 3 Remove the paper feed roller toward 3 direction 4 Install the new paper feed roller in reverse order 1 2 3 Tab of Paper Feed Roller Paper Feed Roller Figure 4 39 Second Paper Feed Roller Removal ...

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Page 99: ...ADJUSTMENT 3 7 5 ...

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Page 101: ...es not turn on when the top cover is closed even at the power switch on perform the position adjustment of interlock switch by the following procedures 1 Remove right cover left cover and front cover 2 Loosen the screw which is fixing interlock switch and close the top cover completely 3 Move the interlock switch up and down and tighten the screw at the position that the switch turns on Refer to C...

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Page 103: ...MAINTENANCE 3 7 5 ...

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Page 105: ...oth damped with water Do not use alcohol Toner Cartridge Exchange Approximately 3000 sheets Consecutive printing Refer to User s manual Drum Cartridge Exchange Approximately 20000 sheets Consecutive printing Refer to User s manual Note In case of intermittent printing its occasion is 80 of consecutive printing 6 1 2 Service Maintenance Following maintenance should be done by qualified repair servi...

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Page 107: ...APPENDIX 3 7 5 ...

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Page 109: ... Interconnection with Main Board Table 7 1 Connector List Connector Function Pins Reference Tables C234 Main Board CN1 ROM DIMM not used CN2 ROM DIMM optional font CN3 ROM DIMM 72 Table7 2 7 4 CN4 SCSI not used CN5 RAM SIMM 72 Table7 5 7 7 CN6 Parallel Interface 36 Table7 8 CN7 RS 422 8 Table 7 9 CN8 RS 232C not used CN9 Control Panel 26 Table7 10 CN10 Type B not used CN11 Video Connector not used...

Page 110: ...bit data bus 26 D13 I O 32bit data bus 27 D14 I O 32bit data bus 28 A7 O Address bus 29 A11 O Address bus Table 7 3 Connector CN3 Pin Cont Pin Signal Name I O Description 30 Vcc Power 31 A8 O Address bus 32 A9 O Address bus 33 A13 O Address bus 34 RDX O Lead Signal 35 D15 I O 32 bit data bus 36 A14 O Address Bus 37 D16 I O 32bit data bus 38 D17 I O 32bit data bus 39 GND Ground 40 BE0X O Bite enabl...

Page 111: ...und 2 D0 I O 32bit data bus 3 D16 I O 32bit data bus 4 D1 I O 32bit data bus 5 D17 I O 32bit data bus 6 D2 I O 32bit data bus 7 D18 I O 32bit data bus 8 D3 I O 32bit data bus 9 D19 I O 32bit data bus 10 Vcc Power 11 NC O Not used 12 A0 O DRAM Address bus 13 A1 O DRAM Address bus 14 A2 O DRAM Address bus 15 A3 O DRAM Address bus 16 A4 O DRAM Address bus 17 A5 O DRAM Address bus 18 A6 O DRAM Address...

Page 112: ...bus 54 D26 I O 32bit data bus 55 D11 O 32bit data bus 56 D27 I O 32bit data bus 57 D12 I O 32bit data bus 58 D28 I O 32bit data bus 59 Vcc Power 60 D29 I O 32bit data bus 61 D13 I O 32bit data bus Table 7 7 Connector CN5 Pin Cont Pin Signal Name I O Description 62 D30 I O 32bit data bus 63 D14 I O 32bit data bus 64 D31 I O 32bit data bus 65 D15 O 32bit data bus 66 NC Not used 67 70 PD0 PD3 I Prese...

Page 113: ... not used 4 A1 O Control Data select signal of LCD controller 5 LCDWRX O LCD controller writing signal not used 6 DB3 O Data bus to LCD not used 7 DB2 O Data bus to LCD not used 8 DB1 O Data bus to LCD not used 9 DB0 O Data bus to LCD not used 10 SW5X I Panel switch not used 11 SW6X I Panel switch not used 12 SW7X I Panel switch not used 13 SW8X I Panel switch not used 14 LED4X O LED light On sign...

Page 114: ...EPL 5700 Chapter7 Appendix Rev A 7 6 7 2 CIRCUIT BOARD COMPONENT LAYOUT Figure 7 2 C234 Main Control Board Component Layout Front Figure 7 3 C234 Main Control Board Component Layout Rear ...

Page 115: ... Following pages show exploded diagrams of EPL 5700 1 Housing 2 Paper Exit Section 3 Paper Take Up Section 4 Fusing Unit 5 Drive Transfer Unit 6 Frames I 7 Frames II 8 Optional 2 nd Lower Paper Feeding Section I 9 Optional 2 nd Lower Paper Feeding Section II ...

Page 116: ...08 3705 3504 3504 3704 3704 09 13 07 06 10 11 04 14 12 15 02 03 16 05 01 1 HOUSING ...

Page 117: ...08 07 05 06 05 02 04 03 02 01 01 2 PAPER EXIT SECTION 3704 3704 3704 3704 ...

Page 118: ...11 03 24 13 12 01 15 16 17 18 14 10 09 08 04 23 02 06 05 07 19 03 01 22 21 20 25 3 PAPER TAKE UP SECTION 3704 3704 3704 SL1 3704 0601 1308 9109 9109 ...

Page 119: ...07 09 06 13 08 12 PS3 11 07 05 04 15 15 15 15 14 02 08 18 TS1 3923 TH1 H1 16 17 10 01 22 21 23 03 20 19 3704 3504 3704 1305 1305 3704 4 FUSING UNIT ...

Page 120: ...03 02 01 39 04 05 06 07 08 09 10 11 13 12 14 16 17 15 18 19 20 21 22 23 40 41 24 25 26 27 28 29 31 30 32 33 34 36 37 35 42 38 3501 1308 1308 3907 3907 HV1 PS2 M1 3907 3704 5 DRIVE TRANSFER UNIT ...

Page 121: ...16 19 18 17 4012 4012 17 15 14 22 06 06 12 13 21 20 12 11 10 09 08 07 06 06 05 05 04 03 02 01 3501 2901 3501 3501 S2 3501 3501 3501 4011 4011 3504 8301 PE1 3501 3504 6 FRAMES I ...

Page 122: ...02 PU1 03 04 05 06 01 14 07 08 07 09 10 11 13 12 15 PH 16 7 FRAMES II 3504 3501 3704 3501 3704 3704 3704 3501 1305 2514 8302 ...

Page 123: ...08 15 09 04 03 05 07 06 12 08 14 13 30 29 28 27 26 25 25 17 12 11 25 16 18 19 03 04 20 21 23 24 31 22 22 22 25 01 02 3704 3704 3504 3704 3704 3504 3501 PWB A SW21 SL21 3704 3501 3704 3704 3704 3501 3501 9107 9107 9107 9107 9112 9112 0509 ...

Page 124: ...9 2ND PAPER TAKE UP II OPTION 01 02 03 04 05 06 06 14 04 14 13 12 11 08 08 07 09 10 01 3704 3704 3704 ...

Page 125: ...EPL 5700 Chapter7 Appendix Rev A 7 17 7 4 CIRCUIT DIAGRAM Circuit diagram of C234 main board is on the next pages 1 C234 Main Board 1 2 2 C234 Main Board 2 2 3 C239 PROG Board Depending on destinations ...

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