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P HAS E R® 1235
N ET WOR K CO LOR P R I NTE R
Service Quick Reference Guide
Warning
The following servicing instructions are for
use by qualified service personnel only. To
avoid personal injury, do not perform any
servicing other than that contained in
operating instructions unless you are qualified
to do so.
This printing: December 2000
071-0728-00
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Copyright © Xerox Corporation. Unpublished rights reserved under the copyright laws of the United States. Contents of this publication may not be reproduced in any form without permission of Xerox Corporation. ® ® ® ® ® Phaser , PhaserShare , ColorStix , the TekColor icon, Made For Each Other , ® ® ® ® DocuPrint , WorkSet , Ethernet , the stylized X, and XEROX are registered trademarks of Xerox Corporation. PhaserLink™, PhaserPort™, PhaserPrint™, Ph
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Users safety summary Terms in CAUTION Conditions that can result in damage to the product. manual: WARNING Conditions that can result in personal injury or loss of life. Power source: For 110 VAC printers, Do not apply more than 140 volts RMS between the supply conductors or between either supply conductor and ground. Use only the specified power cord and connector. For 220 VAC printers, do not apply more than 260 volts RMS between the supply conductors or between
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Symbols as marked on product: DANGER high voltage: Protective ground (earth) terminal: Use caution. Refer to the manual(s) for information: ! WARNING: If the product loses the ground connection, usage of knobs and controls (and other conductive parts) can cause an electrical shock. Electrical product may be hazardous if misused. Service safety summary For qualified service personnel only: Refer also to the preceding Users Safety Summary. Do not service alone: Do not perf
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Contents General Information 1 The Phaser 1235 Color Printer 2 Printer RAM and printer capabilities 4 CRU life counter behavior 4 Print engine assemblies 5 The image processor board 11 The control panel 12 On Line LED 12 ! Fault 12 Rear panel 13 Accessing special operating modes 14 System controller board LEDs 14 Paper tray type sensing 15 Specifications 16 Regulatory specifications 19 Error Codes and Messages 21 Error messages 21 Troubleshooting 31 Power on self-diagnostic test 32 Pri
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Jams 41 Wrong media 41 Paper jams at the paper tray 41 Manual bypass feeder feed jams 42 Paper jams at the registration rollers 42 Paper jams at the transfer belt 42 Fuser jams 43 Eject jams 43 Jams in the duplex unit 43 No drum imaging unit installed 44 Imaging drum unit up/down error 44 Fan error 44 Fuser unit error 45 Other problems 46 The printer continuously displays “Booting” or “Initializing.” 46 False “No toner cartridge installed” message 46 False “No fuser unit installed” message 4
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Service Tests and Adjustments 61 Diagnostics mode 61 Switch scan test 63 LED head test 68 Motor and clutch tests 69 Test printing 71 Consumable count initialization 73 Consumable counter display 75 Consumable continuation counter display 76 Adjusting color density and balance 77 Printing a Test Page 77 Interpreting the Color Balance test print 77 What to look for 78 Making adjustments 78 Adjustment recovery 79 Cleaning and Maintenance 81 Service preventive maintenance procedure 81 Recomm
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Left plate assembly 108 Electronic boards 109 System controller board 109 Print engine controller board 110 Toner sensor board 111 Entrance sensor board 113 High voltage power supply 114 Low voltage power supply 116 Control panel 117 Paper feed components 118 Tray 1 feed roller and nudger roller 118 Retard pad 119 Paper-size sensing board 120 Paper-size sensing actuator 122 Main feeder assembly 123 Tray 1 no-paper/low-paper sensors 125 Paper tray lift arm roller 126 Multi-sheet bypass feeder
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Drive assembly components 151 Main motor assembly 151 Main feeder drive motor 153 Transfer belt motor assembly 154 Xerographic components 156 Shutter plate 156 Color registration sensor assembly 157 Color registration solenoid 158 LED assembly 159 Drum contact assembly 160 Toner sensor actuators 161 Duplex unit 163 Optional paper feeder components 164 Idler roller assembly 164 Inner frame 166 Feeder clutch 169 Feeder motor 171 Feeder control board 173 Paper transport roll guide 175 Feeder
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Figures The Phaser 1235 Color Printer with lower tray feeders 1 Print engine circuit boards 5 Print engine circuit boards (cont’d) 6 Print engine sensor and switch locations 7 Print engine sensor and switch locations (cont’d) 8 Print engine motors, clutches and solenoids 9 Optional feeder motor and clutch 10 Features of the controller board 11 The control panel 12 The printer rear panel 13 Tray switch sensors and actuators 15 Door safety interlock switches 37 LED Hea
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Removing the entrance sensor board 113 Removing the high voltage power supply 115 Removing the low voltage power supply 116 Removing the control panel 117 Removing the feed roller and nudger roller 118 Removing the retard pad 119 Removing the paper size sensing board 121 Removing the paper size sensing actuator 122 Removing the main feeder assembly 124 Removing the lower plate assembly 125 Removing the paper tray lift arm roller 126 Removing the multi-sheet bypass feede
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Removing the feeder control board cover 167 Removing the optional feeder inner plate 168 Removing the feeder control board cover 169 Removing the feeder clutch 170 Removing the feeder control board cover 171 Removing the feeder motor 172 Removing the feeder control board cover 173 Removing the feeder control board 174 Removing the feeder control board cover plate 175 Removing the paper transport roll guide 176 Removing the feeder control board cover plate 177 Removing t
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Tables Entering special operating modes 14 Paper size detection 15 Physical dimensions 16 Printer clearances 16 Functional specifications 17 Electrical specifications 18 Environmental specifications 18 Printer fault messages 21 POWER Connector pinout 35 Motor and fuser roller resistances 38 Engine maintenance mode menu 62 Switch scans and the sensor and switches test 64 Motor and clutch test constraints 69 Test Print menu 71 Table 1: Initialization items - consu
