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Service Guide ML380

Chapter 0 About This Manual

Manual Copyright

This document may not be reproduced without the written permission of the Okidata Technical Training
Group. Every effort has been made to ensure the accuracy of the information contained in this training
course. Okidata is not responsible for errors beyond its control.

© 1994 by Okidata All rights reserved.

First Edition August, 1989 P/N 59238701

Second Edition September, 1993 P/N 59238702

Third Edition November, 1994 P/N 59238703

Written and produced by the Okidata Technical Training Group

Please address any comments on this publication to:

Technical Training Group
Okidata
532 Fellowship Road
Mount Laurel, NJ 08054-3499
Fax Number: (609) 235-2600, ext. 7034

Okilink Login Name: Technical Training

OKIDATA is a registered trademark of Oki Electric Industry Company, Ltd.; marques deposee de Oki
Electric Industry Company, Ltd.; marca registrada, Oki Electric Industry Company, Ltd.
MICROLINE is a registered trademark of Oki Electric Industry Company, Ltd.; marque depose de Oki
Electric Industry Company, Ltd.
Centronics is a registered trademark of Centronics Inc.
PLUG n PRINT is a registered trademark of Oki America, Inc.; marque deposee de Oki America, Inc.
Epson is a registered trademark of Seiko Epson Corporation.
IBM is a registered trademark of International Business Machine Corporation.

Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business
Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)

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Содержание ML380

Страница 1: ...Thank You for purchasing this Factory Service Manual on EBAY from PCTECHINFO Click Here for more Factory Service Manuals for other Computer and Printer Copier Manufacturers from PCTECHINFO...

Страница 2: ...7 97 Note This Adobe Acrobat version of the Okidata Service Training Manual was built with the pictures rendered at 300 dpi which is ideal for printing but does not view on most displays well Copyrigh...

Страница 3: ...03 Initialization 16 2 1 04 Interface Control 17 2 1 05 Printhead Drive Circuit 18 2 1 06 Spacing Drive Circuit 19 2 1 07 Line Feed Circuit 20 2 1 08 Alarm Circuits 21 2 1 09 Paper End Detection Circ...

Страница 4: ...55 3 2 22 Space Motor Assembly 56 3 2 23 Bottom Paper Guide Lever 57 3 3 Printer Adjustments 58 3 3 02 Gap Between Platen and Printhead 59 3 3 03 Space Belt Tension 60 3 3 04 Key Combinations 61 3 3 0...

Страница 5: ...g ASCII Test 100 4 8 03 Font Test 101 4 8 04 Serial Interface Loopback Test General Information 102 Loopback Connector Configuration Diagram 103 Procedure 104 Serial Cable Information 105 Serial Inter...

Страница 6: ...125 B 2 02 Covers 126 B 2 03 Printer Unit 127 B 2 04 Printer Mechanism 1 of 3 128 B 2 05 Printer Mechanism 2 of 3 129 B 2 06 Printer Mechanism 3 of 3 130 B 2 07 Option Parts 131 B 2 08 Consumables 132...

Страница 7: ...p Road Mount Laurel NJ 08054 3499 Fax Number 609 235 2600 ext 7034 Okilink Login Name Technical Training OKIDATA is a registered trademark of Oki Electric Industry Company Ltd marques deposee de Oki E...

Страница 8: ...andard An optional pull tractor is available Font and Character Pitch selection is available through the operator panel printer menu or through software using control codes A Centronics Parallel inter...

Страница 9: ...inches 120 millimeters Height 13 58 inches 345 millimeters NOTE Dimensions DO NOT INCLUDE the platen knob acoustic cover and paper separator 1 2 02 Weight 17 9 pounds 8 1 kilograms Copyright 1997 Okid...

Страница 10: ...240 VAC 5 5 15 Single phase AC 1 3 02 Power Consumption Operating 90 VA Idle 30 VA 1 3 03 Power Frequency 120 VAC 50 60 Hz 2 220 240 VAC 50 60 Hz 2 Copyright 1997 Okidata Division of OKI America Inc...

Страница 11: ...ng humidity 20 to 80 RH While in storage 40 to 158 degrees Fahrenheit 40 to 70 degrees Celsius Storage humidity 5 to 95 RH 1 4 04 Impact Non operating 3 G or less 1 4 05 Vibration Operating 0 3 G 5 to...

Страница 12: ...and 114 CSA No CSA Standard C22 2 No 154 FCC FCC Certified per Part 15 Subject J Class B VDE VDE 0806 0875 Class B and 0836 BS BS 5850 6204 IEC 435 380 Copyright 1997 Okidata Division of OKI America I...

Страница 13: ...r Line Characters Per Inch 80 10 96 12 120 15 137 17 1 160 20 1 6 03 Character Pitches 5 6 8 5 10 12 15 17 1 20 characters per inch Characters Per Inch cpi The character pitches are selected through t...

Страница 14: ...llel Optional RS232C Serial 19 2 Kbytes Super Speed Ready Busy X ON X OFF NOTE When the serial interface module is installed the printer s parallel interface connector is NOT accessible 1 6 10 Line Fe...

Страница 15: ...iameter pins Overheat Protection When printhead temperature is between 90 and 129 degrees Celsius ALARM 1 the printer stops bi directional printing Uni directional printing begins If the temperature c...

Страница 16: ...k paper 1 6 19 Print Modes Letter Quality Utility 1 6 20 Print Speed Print Mode Character Pitch 10 cpi 12 cpi 15 cpi 17 1 cpi 20 cpi LQ 50 cps 60 cps 75 cps 85 cps 100 cps Utility 150 cps 180 cps 112...

Страница 17: ...gle Part 14 22 lb 52 5 to 82 5 to g m 2 Multi Part Carbonless 9 11 lb 35 to 40 g m 2 Multi Part Interleaf Paper 10 12 lb 38 to 45 g m 2 Carbon 9 lb 35 g m 2 Width 3 5 to 10 5 inches 89 to 267 millimet...

Страница 18: ...l DO NOT use Paper Park with labels Transparency NOTE Roller marks may mar the transparency under high temperature high humidity conditions Length 3 to 14 inches 76 2 to 356 millimeters Number of Copi...

Страница 19: ...Program ROM 256 Kbit Located at Q2 of the main control board Resident Character Generator ROM 1 Mbit Masked to the CPU 1 8 03 RAM 32 Kbyte Located on the main control board Used as Receive Buffer Prin...

Страница 20: ...inthead and void any warranties Material Cartridge Fabric Types Black Nylon Ribbon Life On average at 10 characters per inch Utility Mode Black Ribbon 2 million characters Copyright 1997 Okidata Divis...

Страница 21: ...eders CSF 3800 Single Bin with envelope capability Paper Width 7 2 to 8 5 inches 182 to 216 millimeters Paper Length 10 1 to 11 7 inches 257 to 297 millimeters Capacity 50 sheets 20 lb 1 10 02 Pull Tr...

Страница 22: ...red through the Menu When the serial interface module is installed the printers parallel interface connector is NOT accessible Copyright 1997 Okidata Division of OKI America Inc All rights reserved Se...

Страница 23: ...of power on time 25 duty cycle 35 page density 1 11 04 Printhead Life Average 200 million characters in 10 cpi utility mode normal 25 duty 35 page density 1 11 05 Ribbon Life Approximately 2 million c...

Страница 24: ...it and interface connector The switches and LED s of the operator panel are mounted on this board The power to the control board is supplied by the power supply unit The power to the other electrical...

Страница 25: ...rammable ROM stores the Menu Mode data LSI Q7 LC92018B 283 This LSI switches the phase of the space motor and generates the timing of print dots for each print density The LSI performs the following f...

Страница 26: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 27: ...generated ROM program execution starts with the mode setting of Q5 Q6 and Q7 Next ROM and RAM are checked for errors RAM is initialized and the carriage is homed The program finally establishes the In...

Страница 28: ...ON as the data is processed When processing is completed the BUSY signal is switched OFF and an ACK signal is sent to the host to request more data The BUSY signal is also switched ON when the printe...

Страница 29: ...rive duration is determined by an RC integrating circuit which modifies the HD ON pulsewidth The pulsewidth of the HD ON signal varies with the number of pins being driven The drive time increases as...

Страница 30: ...drive voltage compensation circuit and sent back to the LSI Q7 The space overdrive signals Phase 1DVOV Phase 2 DVOV Phase 3DVOV and Phase 4DVOV switch Q16 and Q17 ON setting up the proper phase relati...

Страница 31: ...n a stopped position During line feed operation the line feed motor is driven in accordance with the LF OVD signal The signals LFMO Phase 1 through LFMO Phase 4 establish the proper phase relationship...

Страница 32: ...printhead The CPU senses this circuit every time a line is printed Whenever printing the printhead temperature increases If the head temperature reaches approximately 90 degrees 129 degrees Celsius a...

Страница 33: ...by a photosensor When the printer detects an out of paper condition the PEN signal goes low printing is stopped and the ALARM LAMP is switched ON Copyright 1997 Okidata Division of OKI America Inc Al...

Страница 34: ...ter board consists of the power switch AC fuse and AC noise filter Power Transformer If the internal temperature of the power transformer rises abnormally the built in temperature fuse will open to pr...

Страница 35: ...eeping the wires inside the printhead A coil is wrapped around each of the permanent magnets When a dot is to be printed current is passed through the appropriate coil This creates a magnetic field wh...

Страница 36: ......

Страница 37: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 38: ...hich is attached to the bottom of the carriage frame When the pulse motor rotates clockwise as viewed from above the driving force is transmitted to the mini pitch belt through the drive pulley and th...

Страница 39: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 40: ...t into the ribbon cartridge Ribbon Feed Operation The rotation of the space pulse motor is transmitted to the drive gear in the ribbon cartridge through the space rack and ribbon feed gear assembly th...

Страница 41: ...o the FRICTION FEED position the change gear is disengaged from the tractor gear At the same time the release lever applies pressure to push the pressure rollers against the platen allowing paper to b...

Страница 42: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 43: ...paper end condition Bottom Feed Paper End When paper is installed it moves the bottom paper end lever to position A2 and the sensor is switched ON When a paper out condition exists the bottom paper en...

Страница 44: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 45: ...l arm is closed a reverse line feed of about 0 18 inches is performed This moves the paper to the print start position Continuous Sheet Rear Feed SASF 1 Push the paper release lever to the continuous...

Страница 46: ...condition exists or 14 inches of paper have been fed 3 When the PAPER END condition exists the printer retracts 0 49 inches of paper The paper is still installed on the push tractor but cut sheet pape...

Страница 47: ...is procedures in Section Four of this Service Handbook Follow the procedures listed in Adjustments and Service Settings Adjustments may be required when either consumable or parts are replaced Failure...

Страница 48: ...s 4 Inch Awl or large opened paper clip Wire Cutters Digital Multimeter Feeler Gauge capable of measuring 014 inches Shop Vacuum Clean soft and lint free Cloth All Purpose Cleaner Contact Kleen Okidat...

Страница 49: ...it boards use extreme care Integrated circuits microprocessors ROM and RAM can be destroyed by static electricity 9 Do not place printed circuit boards directly on conductive surfaces 10 Follow the re...

Страница 50: ...vailable Part Item Comment Appendix B Number Description Reference This Service Handbook lists the disassembly procedures for major components of the unit Okidata DOES NOT recommend disassembling a un...

Страница 51: ...front of the printer 3 Push the paper separator 3 at location A and release it from the platen shaft 4 4 Lift the paper separator to detach the guide pins 5 from the printer mechanism 6 P N N A AC Cab...

Страница 52: ...Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 53: ...sp the tab of the head clamp 3 lift up and swing it 90 in the direction of Arrow A to unlock the printhead 4 4 Lift the printhead from the carriage frame 5 NOTE Perform the printhead gap adjustment pr...

Страница 54: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 55: ...the assemblies to the center of the printer unit 5 Remove the two screws 4 The screws are at the back of printer on the bottom 6 Lift the rear part of the upper cover 5 pull it forward and remove it 7...

Страница 56: ......

Страница 57: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 58: ...ction of Arrow A leaving the carriage plate in place 4 Set the carriage plate under the space rack 4 5 Release the claw 5 6 Remove the B side of the space rack from the guide pin 6 and lift the space...

Страница 59: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 60: ...is procedure 3 2 02 2 Release the four claws 1 3 Insert a screwdriver into the grooves 2 and pry the claws away from the carriage plate 3 4 Lift the ribbon feed gear assembly 4 in the direction of arr...

Страница 61: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 62: ...tom of the carriage plate 9 Use a screwdriver to push the claw of the belt clamp in the direction of arrow A Then remove the belt clamp and belt by lowering the claw in the direction of arrow B NOTE P...

Страница 63: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 64: ...dures 3 2 01 3 2 02 3 2 03 3 2 05 and 3 2 06 2 Remove the two head cables 1 from the connectors 2 on the control board When cable clamp 3 is lifted the head cables can be removed 3 Pull the head cable...

Страница 65: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 66: ...ive connectors 1 connected to the control board 2 3 Remove the five screws 3 4 Release the two claws 4 and move the control board in the direction of arrow A to remove P N 55047801 PCB UMMB Main Contr...

Страница 67: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 68: ...screwdriver to release the six claws 1 on the operation panel 2 and remove the operation panel from the control board 3 P N 53524301 Sheet Operation Panel RSPL B 2 03 Copyright 1997 Okidata Division o...

Страница 69: ...of the line feed motor 3 in the direction of arrow C 3 Pull the line feed motor out of the guide holes 4 in the direction of arrow D NOTE After installation check that the platen gear 5 engages firml...

Страница 70: ...procedures 3 2 01 3 2 02 and 3 2 10 2 Pull the paper end sensor 1 from the sensor guide 2 P N 56106901 Photosensor Assembly RSPL B 2 04 Paper End Copyright 1997 Okidata Division of OKI America Inc All...

Страница 71: ...left bail arm 4 4 Remove the left bail arm from the bail bar 5 5 Use pliers to remove the right bail arm spring 6 Push claw downward pull it out of guide hole of main frame and remove the right bail...

Страница 72: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 73: ...shaft and the adjusting lever 9 Pull the carriage shaft in the direction of arrow B and remove it from the carriage frame 8 Be careful not to lose the eccentric collar 9 When installing the eccentric...

Страница 74: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 75: ...2 from the main frame 3 3 Lift the A side of the platen assembly until the B side clears the release lever 4 NOTES After installation check that the platen gear engages firmly with the line feed motor...

Страница 76: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 77: ...mbly shaft out of the main frame in the direction of arrow D 9 Remove the shaft NOTES Installation Position the tab 12 of the paper chute firmly with the groove 13 of the main frame Engage the cut she...

Страница 78: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 79: ...g from the underside of the printer mechanism and using a screwdriver detach the connection hole section 1 from the projection 2 of the main frame 3 Begin at point A and end at point B 3 Remove the pa...

Страница 80: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 81: ...e the shaft in the direction of Arrow D to remove the shaft from the larger guide hole 11 8 Push the left part of the tractor assembly in the direction of Arrow E and remove the tractor assembly 12 wh...

Страница 82: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 83: ...cond pin 3 is part of the printer mechanism The first pin must be released before the switch will pivot on the second pin 3 To release the first pin use an opened paper clip to push the pin out of the...

Страница 84: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 85: ...ition switch 2 from the pin 3 3 Pull the switch through the opening 4 in the printer frame 4 Release the cables from the guides on the frame 5 Remove the microswitch assembly P N 56211301 Microswitch...

Страница 86: ...printer mechanism 3 to remove it P N 54148708 Screw No 3 x 8 MM Self Tapping RSPL B 2 02 P N 53330101 Plate Shield RSPL B 2 02 P N 50071301 Cover Lower Assembly RSPL B 2 03 P N 53510601 Cover Lower RS...

Страница 87: ...Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 88: ...ormer the AC switch 9 and the AC power cord from the lower cover assembly 10 8 The power supply unit is made of the grounding cords the transformer the AC switch and the connector 11 NOTE Installation...

Страница 89: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 90: ...or assembly 5 in the direction of arrow A 4 Remove the brackets 6 from the guide holes 7 of the main frame and remove the space motor assembly NOTE Installation On installation align the brackets with...

Страница 91: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 92: ...in from the guide hole 3 of the main frame 3 Remove the pin 4 from the guide hole 5 of the main frame and remove the bottom paper guide lever NOTE When the paper chute 6 is installed the cut sheet pap...

Страница 93: ...Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 94: ...res may be required when replacing either consumables or parts The disassembly assembly procedures list the required adjustments and refer you to this section Failure to perform these procedures may r...

Страница 95: ...n position front 2 Set the printhead gap adjusting lever 2 to range 1 3 Move the carriage to the left side of the platen and rotate the left adjusting collar 3 to obtain the correct gap between the pl...

Страница 96: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 97: ...Belt 3 2 06 Space Motor Assembly 3 2 22 Procedure 1 Slightly loosen the screw of the idle pulley DO NOT remove the screw 2 Manually slide the carriage assembly back and forth across the entire length...

Страница 98: ...nu if Menu set to LIMITED OPERATION SEL FEED Hold during Power ON Reset Menu to Factory Defaults TOF PARK Hold during Power ON Activate Rolling ASCII Test FEED Hold during Power ON Activate Font Test...

Страница 99: ...anent memory However they can be changed through software commands control panel settings or by resetting the menu When the printer is in Menu Select Mode the function of the control panel buttons cor...

Страница 100: ...go out and MENU MODE will print on the paper 6 Use the control panel to make menu changes Press GROUP to move to the next group in the menu Press ITEM to move to the next item within a group Press SET...

Страница 101: ...while powering ON the printer 5 The POWER lamp will light The SELECT lamp will not light MENU MODE will print on the paper 6 Use the control panel to make menu changes Press GROUP to move to the next...

Страница 102: ...s installed 2 Verify that the ribbon is correctly installed 3 Enter Menu Select Mode either from Print Mode or Power OFF From Print Mode Verify that the printer is powered ON and the SELECT lamp is li...

Страница 103: ...Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 104: ...ML380 Chapter 3 Maintenance Disassembly Sample Menu Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this materia...

Страница 105: ...ory default settings 1 Before resetting the Menu Okidata STRONGLY RECOMMENDS printing the Menu Printing the Menu provides a reference of customized settings When the Menu is reset all customized setti...

Страница 106: ...ted Operation prevents the printer settings from being changed Procedure To return the printer to Full Operation you must modify the menu CAUTION Determine the preference of the end user regarding thi...

Страница 107: ...Function prints 8 Press SET until FULL OPERATION prints 9 Press EXIT to save the change and exit Menu Mode Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Busine...

Страница 108: ...directional bi directional Paper Out Override No Yes Print Registration O 1 2 3 4 5 5 4 3 2 1 Operator Panel Functions Full Operation Limited Operation Interface Parallel Serial Vertical Control Line...

Страница 109: ...ON X OFF Diagnostic Test No Yes Busy Line SSD SSD DTR RTS Baud Rate 9600 4800 2400 1200 600 300 19200 bps DSR Signal Valid Invalid DTR Signal Ready on Power Up Ready on Select Busy Time 200 millisecon...

Страница 110: ...the SELECT button to deselect the printer The SELECT lamp will go out 3 To move the paper do either of the following To move the paper up press and hold TOF PARK and press FEED To move the paper down...

Страница 111: ...ECT button to select the printer The SELECT lamp will light Bottom Feed 1 Load paper into the printer 2 Press the SELECT button to deselect the printer The SELECT lamp will go out 3 Rotate the platen...

Страница 112: ...rocedure 1 Tear off any printed pages 2 Make sure the printer is selected The SELECT lamp must be lit 3 Press TOF PARK 4 The paper will retract from the paper path 5 Move the paper selection to the si...

Страница 113: ...f can only be used with continuous feed paper fed in from the rear on the built in push tractor It cannot be used with the optional pull tractor Procedure 1 Load continuous feed paper into the printer...

Страница 114: ...1 Before resetting the Menu Okidata STRONGLY RECOMMENDS printing the Menu Printing the Menu provides a reference of customized settings When the Menu is reset all customized settings are LOST 2 Power...

Страница 115: ...Use a dry lint free cloth and vacuum cleaner Areas to be Cleaned Carriage Shaft and Vicinity Remove or vacuum out the paper particles wipe out dirt dust ribbon waste etc Paper Feed Area and Pin Surfa...

Страница 116: ...as to be Lubricated Carriage Shaft Wipe the carriage shaft with a lint free cloth that has been lightly dampened with machine oil Then wipe the carriage shaft with a dry lint free cloth Space Rack App...

Страница 117: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 118: ...aterials from Step 1 3 6 02 All Other Returns CAUTION The product MUST be returned in the original packaging The product MUST be returned with ALL originally supplied factory items Be sure to secure t...

Страница 119: ...cedures RAPs Each RAP will ask you questions or require you to make observations The answers to these questions and the results of your observations determine your next course of action Use the RAP In...

Страница 120: ...al number from the back of the printer Refer to the following to decode the serial number Example Printer Serial Number 401A0154693 Date Code 401 4 year 01 month Revision A Serial Number 0154693 Copyr...

Страница 121: ...e top of each test is a header This header provides the following information printer model 1 emulation 2 version 3 firmware revision number 4 firmware part number 5 character generator revision numbe...

Страница 122: ...ning kit Please be as specific and detailed as possible Your comments suggestions and criticisms are used to update and revise training kits You should reference the training materials when servicing...

Страница 123: ...ilable via Okilink II Situations that are NOT addressed in the reference documentation technical service bulletins or round tables may be reported to the Dealer Service and Support Engineers Contact T...

Страница 124: ...respond by mail please use the appropriate address listed in the Service Center Reference Guide Information Provided Please provide the following information when reporting problems Okidata Dealer Nu...

Страница 125: ...to the Service Center Reference Guide for information on accessing Okilink II 4 3 03 Faxable Facts Okidata s Faxable Facts is an automated fax document retrieval system It is maintained by Okidata s...

Страница 126: ...placed as recommended 4 Has the ribbon been installed properly 5 Is an Okidata ribbon being used 6 Is the printhead gap correctly set 7 Is the firmware the latest current revision 8 Are the printer dr...

Страница 127: ...e status of the POWER SELECT Font Indicators and Pitch Indicator Lamps 5 Refer to the Fault Alarms Tables Section 4 6 6 Locate the error 7 Perform the designated corrective action Operational Errors A...

Страница 128: ...ook Is the output satisfactory NO Refer to Section 4 5 of this Service Handbook YES Are all operator panel switches operating properly NO Replace the operator panel YES Has the problem been resolved Y...

Страница 129: ...sample 2 Make sure that the paper you are using is within specifications Paper specifications can be found in Section 1 of this Service Handbook 3 Make sure that the printhead gap adjust lever is in t...

Страница 130: ...nter before loading the paper If you re using continuous feed paper you can do this by using the following procedure Back the paper out of the printer Fold the paper over three times to produce a page...

Страница 131: ...as soon as you select an LQ font 8 You need to check the data sent by the computer to the printer Use the hexadecimal dump mode To enter this mode hold the SELECT and TOF PARK buttons down while power...

Страница 132: ...Page 89 Service Guide ML380 Chapter 4 Failure Repair Analysis 4 5 ABNORMAL OUTPUT 4 5 01 Output Samples...

Страница 133: ...that the headgap lever setting is appropriate for the type of paper being used 3 Check perform the printhead gap adjustment 4 Paper is not within specification Refer to Section One for paper specific...

Страница 134: ...anel LED s 2 Go to the Fault Alarm Lamp Display Table Section 4 6 02 3 Look for the LED Indications you have observed 4 The Table will provide a Failure Description Probable Cause and Recommended Acti...

Страница 135: ...rmal Operation Mode Menu Printer is in Menu Mode see Printer Handbook Normal Operation Slow Blink Operator Alarm Condition Paper en d Out of paper condition Load Paper If paper is installed check for...

Страница 136: ...e the main control board Courier Prestige 10 Spacing Error Head Homing Error 1 Check for binding by manually moving the carriage assembly 2 Replace the space motor 3 Replace the main control board Cou...

Страница 137: ...eps 1 Go to the RAP Index 2 Find the RAP which is associated with the printers problem 3 Go to the appropriate RAP 4 All RAPs begin with a START statement followed by questions or another type of stat...

Страница 138: ...er 02 Spacing Operation Does Not Operate Normally 03 Wrong Character Or Missing Dots 04 Line Feed Problems 05 Data Receiving Failure Copyright 1997 Okidata Division of OKI America Inc All rights reser...

Страница 139: ...s F1 and F2 on the control board Are they open YES Replace the open fuses s NO Is the connector CN9 on the control board connected properly NO Attach connector CN9 properly YES Remove connector CN9 Is...

Страница 140: ...rive mechanism for smooth operation NO Are 5V and 35V on the control board Refer to Appendix A of this Service Handbook NO Go to RAP 01 Item A YES Is the connector CN8 on the control board connected p...

Страница 141: ...thead connector correctly NO Seat the head cable to the printhead connector correctly YES Replace the printhead Is condition corrected YES End of procedure NO Replace the control board Is condition co...

Страница 142: ...line feed motor gear Ensure correct operation of the push tractor assemblies both right and left and the tractor drive gears YES Is connector CN4 on the control board connected properly NO Connect it...

Страница 143: ...terface module YES Are the serial interface parameters properly set in the menu Refer to the Printer Handbook Chapter Three OR Refer to Section Three of this Service Handbook YES Replace the serial in...

Страница 144: ...decimal Dump Mode The Rolling ASCII and Font Tests check print operations The Serial Interface Loopback Test checks the operation of the serial interface board The Hexadecimal Dump Mode checks the dat...

Страница 145: ...owing information printer model 1 emulation 2 version 3 firmware revision number 4 firmware part number 5 character generator revision number 6 and character generator part number 7 ML380 EPS A F W 03...

Страница 146: ...print 5 To stop the test press SELECT Sample Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http...

Страница 147: ...R4084 xxxx CAUTION Running the test without paper loaded will allow the printhead to print on the platen This will dirty the platen cause excessive wear of the ribbon and may damage the platen ribbon...

Страница 148: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 149: ...on of the serial interface In order to run this test the serial interface board must be installed with a serial loopback test connector attached to it Refer to the diagram in the next section for the...

Страница 150: ...guration Diagram 1 Jumper the following pins together Pin 2 to Pin 3 Pin 4 to Pin 5 Pin 8 to Pin 11 Pin 6 to Pin 20 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDA...

Страница 151: ...check the memory function and the signal logic If both are functioning properly the following will be printed LOOP TEST RAM GOOD I F GOOD If either is malfunctioning the following will be printed LOOP...

Страница 152: ...until NO is specified 22 Press SELECT to exit Menu Mode NOTE If you do not set Diagnostic Test to no the printer will enter the test mode at each power ON Copyright 1997 Okidata Division of OKI Ameri...

Страница 153: ...determine the cable requirements on the computers end The printer has the following cable requirements Shielded RS 232C cable UL and CSA approved No more than 50 feet long Cannon DB 25P plug or equiv...

Страница 154: ...om Printer Always set to low mark 5 Not Used 6 Data Set Ready DSR To Printer Indicates that data can be sent 7 Signal Ground SG Ground Ground 8 to 10 Not Used 11 Supervisory Send Data SSD From Printer...

Страница 155: ...Page 107 Service Guide ML380 Chapter 4 Failure Repair Analysis Commonly Used Serial Cable Configurations IBM 25 Pin Cable Configuration IBM 9 Pin Cable Configuration...

Страница 156: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 157: ...s an example of a hexadecimal dump 61 6D 70 6C 65 20 66 20 61 20 68 65 78 61 64 65 63 69 6D 61 6C 20 64 75 6D 70 2E 0D 0A Procedure Follow these steps to engage the Hexadecimal Dump Mode 1 Make sure t...

Страница 158: ...on The charts on the following pages provide information needed to determine if the printhead and motors used in the printer are defective Copyright 1997 Okidata Division of OKI America Inc All rights...

Страница 159: ...ure Repair Analysis 4 9 02 Main Control Board UMMB Voltage Check Points Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any upd...

Страница 160: ...ter 4 Failure Repair Analysis 4 9 03 Connectors Block Diagram Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to th...

Страница 161: ...hapter 4 Failure Repair Analysis 4 9 04 Connector Location Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this...

Страница 162: ...r 4 Failure Repair Analysis 4 9 05 Resistance Diagrams Printhead Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to...

Страница 163: ...hapter 4 Failure Repair Analysis Space and Line Feed Motors Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this...

Страница 164: ...apter 4 Failure Repair Analysis 4 9 06 Head Cable Connection Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to thi...

Страница 165: ...circuit boards used in the printer The following areas are covered Firmware Fuses Jumpers Sensors Switches Test Points Where an item is not applicable the word NONE will be listed Copyright 1997 Okid...

Страница 166: ...cter generator ROM which is soldered to the printed circuit board The original board contains one jumper SP4 Refer to A 2 01 for jumper placement information Summary UMMB Current Board The current boa...

Страница 167: ...ldered on the UMMB Fuses F1 2 5 Amp 125V F2 1 6 Amp 125V F1 3 15 Amp 125V Power Supply Filter Board Jumpers SP4 Place this jumper on the A Side for both 512K ROM and the 256K ROM Sensors NONE Switches...

Страница 168: ...er Pitch Test Points Check the voltages at the testpoints shown 8 vdc Line Feed Space Motor Printer Alarm Circuitry 35 vdc Print Wire Drive 5 vdc Printer Logic Main Control Board UMMB Original Jumper...

Страница 169: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 170: ...125V Power Supply Filter Board Jumpers SP4 A Side 1MB 512K ROM in Q2 B Side 256K ROM in Q2 SP6 A Side 256K 512K ROM in Q2 B Side 1 MB Mask ROM in Q2 SP7 A Side 256K 512K ROM in Q2 B Side 1 MB Mask RO...

Страница 171: ...Character Pitch Test Points Check the voltages at the testpoints shown 8 vdc Line Feed Space Motor Printer Alarm Circuitry 35 vdc Print Wire Drive 5 vdc Printer Logic Main Control Board UMMB Current J...

Страница 172: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 173: ...Sensors NONE Switches NONE Testpoints CN1 Pin 18 see diagram 5 vdc Q4 Pin 14 9 vdc Q4 Pin 16 9 vdc NOTES Check on solder side of board with cover removed Be careful not to damage any components when...

Страница 174: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 175: ...and which are not N A will appear where a part number is not available Current Part Numbers Okidata has made every effort to include current part numbers in this Service Handbook at the time of publis...

Страница 176: ...on are available through Okilink II Faxable Facts and Technical Information Refer to the Service Center Reference Guide for information on accessing these resources Copyright 1997 Okidata Division of...

Страница 177: ...upply item which has a specified life and must be periodically replaced It is purchased and installed by the end user Okidata machines are designed to work exclusively with Okidata consumables By usin...

Страница 178: ...TSBs are also referred to as Okidata s monthly mail The TSBs contain the latest information on firmware revisions procedure changes and technical information updates Okidata distributes the TSBs thro...

Страница 179: ...ion Center Okidata Service and Support telephone numbers The Service Center Reference Guide contains the procedures to follow for ordering parts Please read understand and follow these procedures Serv...

Страница 180: ...Support to find the correct part number Refer to the Service Center Reference Guide for information on contacting Okidata Copyright 1997 Okidata Division of OKI America Inc All rights reserved See th...

Страница 181: ...ated parts breakdown charts Description Section Printer B 2 01 Covers B 2 02 Printer Unit B 2 03 Printer Mechanism 1 of 3 B 2 04 Printer Mechanism 2 of 3 B 2 05 Printer Mechanism 3 of 3 B 2 06 Option...

Страница 182: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Страница 183: ...Okidata P N Oki J P N Description Comments Disassembly Procedure 1 62407901 N A Printer ML380 Parallel 120V Epson LQ Comp Refer to B 1 02 N A 2 62407902 N A Printer ML380 Parallel 220V Epson LQ Comp R...

Страница 184: ...Page 126 Service Guide ML380 Chapter B Illustrated Parts Listing B 2 02 Covers Part numbers are subject to change Refer to Okilink II for current part numbers and pricing information...

Страница 185: ...1081P1 Guide Sheet R 3 2 03 6 53510101 1PP4094 1077P1 Cover Access RSPL 3 2 03 7 53510001 1PP4094 1076P1 Cover Middle RSPL 3 2 03 8 54148708 T2P3 8 HHC Screw No 3 x 8 MM Self Tapping RSPL 3 2 20 9 533...

Страница 186: ...Page 127 Service Guide ML380 Chapter B Illustrated Parts Listing B 2 03 Printer Unit Part numbers are subject to change Refer to Okilink II for current part numbers and pricing information...

Страница 187: ...0A2046M1162 Fuse 125V 1 6A RSPL 3 2 08 8 56304301 540A2046M1252 Fuse 125V 2 5A RSPL 3 2 08 9 53524301 3PP4043 3783G1 Sheet Operation Panel RSPL 3 2 09 10 50071301 1PA4094 1073G1 Cover Lower Assembly R...

Страница 188: ...Page 128 Service Guide ML380 Chapter B Illustrated Parts Listing B 2 04 Printer Mechanism 1 of 3 Part numbers are subject to change Refer to Okilink II for current part numbers and pricing information...

Страница 189: ...3781G1 Photosensor Assembly Paper End RSPL 3 2 11 8 50911801 4PB4025 2843P1 Spring Bail Arm L RSPL 3 2 12 9 53511001 2PP4043 3696P1 Bail Arm L RSPL 3 2 12 10 50911701 4PB4025 2842P1 Spring Bail Arm R...

Страница 190: ...3 2 13 19 50061305 3PA4025 2811G5 Platen Assembly RSPL 3 2 14 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to th...

Страница 191: ...Page 129 Service Guide ML380 Chapter B Illustrated Parts Listing B 2 05 Printer Mechanism 2 of 3 Part numbers are subject to change Refer to Okilink II for current part numbers and pricing information...

Страница 192: ...1 3PA4043 3773G1 Roller Pressure Assembly RSPL 3 2 15 9 50911501 3PP4025 2819P1 Guide Paper Pressure RSPL 3 2 16 10 51216101 4PP4025 2869P1 Gear Tractor RSPL 3 2 17 11 A 56211301 4YX4043 3780G1 Micros...

Страница 193: ...strated Parts Listing B 2 06 Printer Mechanism 3 of 3 Part numbers are subject to change Refer to Okilink II for current part numbers and pricing information Item Okidata P N Oki J P N Description Com...

Страница 194: ...amp Head RSPL 3 2 13 8 53056201 3PP4025 2836P1 Protector Ribbon RSPL 3 2 13 9 53330201 4PP4043 3764G1 Frame Carriage RSPL 3 2 13 10 50071901 4PA4043 3779G1 Tractor Pin L Assembly RSPL 3 2 17 11 510039...

Страница 195: ...Page 131 Service Guide ML380 Chapter B Illustrated Parts Listing B 2 07 Option Parts Part numbers are subject to change Refer to Okilink II for current part numbers and pricing information...

Страница 196: ...Item Okidata P N Oki J P N Description Comments Refer to B 1 02 Disassembly Procedure...

Страница 197: ...Part of 4 N A 6 55047901 4YA4042 1451G11 PCB UMRS RS232C I F w o ROM Option RSPL Part of 4 N A 7 53511501 2PP4043 3717P1 Cover Lower RS232C I F Option RSPL Part of 4 N A 8 70015901 Kit Pull Tractor M...

Страница 198: ...ent part numbers and pricing information Item Okidata P N Oki J P N Description Comments Refer to B 1 02 Disassembly Procedure 1 52104001 N A Ribbon Cartridge Consumable 3 2 02 Copyright 1997 Okidata...

Страница 199: ...isting B 2 09 Packaging Part numbers are subject to change Refer to Okilink II for current part numbers and pricing information Item Okidata P N Oki J P N Description Comments Refer to B 1 02 Disassem...

Страница 200: ...Foam End Cap Right N A 4 N A N A Bag Printer N A 5 N A N A Bag Accessories N A Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for...

Страница 201: ...ining Document N A 2 58232301 N A Package User s Documentation Document Inc 3 4 5 6 N A 3 52033001 N A Card QA Reply Document Part of 2 N A 4 53436029 N A Bag Poly 9 x 12 Document Part of 2 N A 5 5805...

Страница 202: ...idata Service Center Reference Guide Document N A 14 53547501 N A Okidata Support 3 Ring Binder Document N A 15 58067201 N A ABCD Warranty Claim Forms Pkg of 20 Document N A 16 58052401 N A Warranty S...

Страница 203: ...idata Marketing Communications Refer to the Service Center Reference Guide for information on contacting Okidata Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA...

Страница 204: ...ument N A 2 A 52046201 N A Label Kit Document N A 3 A 58055201 N A Sheet Cover Letter Document N A 4 A 59238901 N A Guide Study Document N A 5 A 59238701 N A Manual Training Document N A 6 A 59235901...

Страница 205: ...k Printer Document N A P N 58217703 Microline 380 Service Training Kit This kit replaces P N 58217702 Items in the training kit except for the Printer Handbook are NOT available separately Item Okidat...

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