Xerox Phaser 1235 Service Quick Reference Guide

PHASER® 1235 NETWORK COLOR PRINTER

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

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 Unpublished rights reserved under the copyright laws of the United States.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

DocuPrint

, WorkSet

, ColorStix

, Ethernet

, the TekColor

, the stylized X, and XEROX

icon, Made For Each Other

are registered trademarks of Xerox Corporation. PhaserLink™, PhaserPort™, PhaserPrint™, PhaserSym™, PhaserTools™, InfoSMART™, and the TekColor™ name are trademarks of Xerox Corporation. TekColor Care

and RealSUPPORT

are

service marks of Xerox Corporation.

Software is a registered trademark of FTP Software, Incorporated.

FTP

and HP-GL

PCL

Novell Sun

and NetWare

, Sun Microsystems

are registered trademarks of Hewlett-Packard Corporation.

are registered trademarks of Novell, Incorporated.

, and Sun Microsystems Computer Corporation

are registered trademarks of Sun Microsystems, Incorporated.Other marks are trademarks or registered trademarks of the companies with which they are associated.

All trademarks noted herein are either the property of Xerox Corporation, Pantone, Inc., or their respective companies. © Pantone, Inc., 1988.

TE/sn

Users safety summary

Terms in manual:

Power source:

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 either supply conductor and ground. Use only the speciﬁed power cord and connector. Refer to a qualiﬁed service technician for changes to the cord or connector.

Operation of product:

technician to replace fuses inside the product. Do not operate without the covers and panels properly installed. Do not operate in an atmosphere of explosive gases.

Safety instructions:

product into a power source.

Terms on product:

Care of product:

Disconnect the power plug if the power cord or plug is frayed or otherwise damaged, if you spill anything into the case, if product is exposed to any excess moisture, if product is dropped or damaged, if you suspect that the pr oduct needs servicing or repair, and whenever you clean the product.

CAUTION Conditions that can result in damage to the product. WARNING Conditions that can result in personal injury

or loss of life.

For 110 VAC printers, Do not apply more than 140 volts RMS

Avoid electric shock by contacting a qualiﬁed service

Read all installation instructions carefully before you plug the

CAUTION A personal injury hazard exists that may not be

apparent. For example, a panel may cover the hazardous area. Also applies to a hazard to property including the product itself.

DANGER A personal injury hazard exists in the area where

you see the sign.

Disconnect the power plug by pulling the plug, not the cord.

Ground the product:

grounded AC outlets only. If necessary, contact a licensed electrician to install a properly grounded outlet.

Plug the three-wire power cord (with grounding prong) into

Symbols as marked on product:

DANGER high voltage:

Protective ground (earth) terminal:

Use caution. Refer to the manual(s) for information:

WARNING:

controls (and other conductive parts) can cause an electrical shock. Electrical product may be hazardous if misused.

If the product loses the ground connection, usage of knobs and

Service safety summary

For qualiﬁed service personnel only:

Summary.

Do not service alone:

product unless another person capable of rendering ﬁrst aid or resuscitation is present.

Use care when servicing with power on:

points in this product. To avoid personal injury, do not touch exposed connections and components while power is on.

Disconnect power before removing the power supply shield, soldering, or replacing components.

Do not wear jewelry:

other metallic objects could come into contact with dangerous voltages and currents.

Power source:

not apply more than 120 or 250 volts rms (depending on printer model) between the supply conductors or between either supply conductor and ground. A protective ground connection by way of the grounding conductor in the power cord is essential for safe operation.

Do not perform internal service or adjustment of this

Remove jewelry prior to servicing. Rings, necklaces, and

This product is intended to operate from a power source that will

Refer also to the preceding Users Safety

Dangerous voltages may exist at several

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 Print engine troubleshooting 33

Testing the print engine 33

Verifying printer operation by using its self-test print 34

Verifying power supply operation 34

Measuring power supply voltages 34 Inspecting the low-voltage power supply fuse 36 Safety interlocks 36 Testing for a shorted motor 37

Motor and fuser roller resistances 38

Media jams and the paper path 39

Media-based problems 39

Media problems 39 Multiple-sheet pick 39 The media skews passing through the paper path 40 Paper tray indicates it is empty when it is not 40

Service Guide

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 46 Front door indicated being open when it is closed 47 High temperature error 47 Low temperature error 47 Invalid memory DIMM 47

Printing and print quality problems 48

Light or blurred images 48 Dark, stained background 49 Blank print 50 Black stripe in direction of paper travel 51 White stripe in direction of paper travel 52 Poor fusing, toner offsetting 53 Repeating defect or voids on print 54 Missing characters or voids in print 55 Color misalignments 56 Unexpected colors 57 Image is skewed on the paper 58 Image is not centered on the print 58 The print is wrinkled 58

Macintosh printing problems 59

Image never prints 59 Image is rotated 90 degrees 59 Image prints in black-and-white 59 Printer isn’t in the Chooser 60

Windows printing problems 60

Image never prints 60

Phaser 1235 Network Color Printer

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 Recommended tools 82 Periodically replaced parts 82

Cleaning 83

Cleaning the LED bar 83 Cleaning the pickup roller 83

Resetting NVRAM 85

FRU Disassembly 87

Cabinet panels 87

Top cover 87 Left-side cover 88 Right-side cover 89 Rear cover 90 Front cover 91 Face-up tray 92

Frames components 93

Right shield plate 93 Electrical chassis (card cage) 94 Electrical chassis cooling fan 96 Printer unit chassis 97 Main cooling fan 99 Top cover inner frame 100 Left/right top cover spring assembly 103 Left paper tray guide assembly 104 Right paper tray guide assembly 106

Service Guide

vii

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 components 127

Multi-sheet bypass feeder 127 Multi-sheet bypass feeder entrance sensor actuator 129

Paper transport components 130

Tray 1 entrance sensor actuator 130 Belt entrance sensor actuator 131 Transfer belt unit 132

Registration components 133

Registration clutch 133 Registration motor assembly 134 Registration roller assembly A and drive gear 135 Registration roller assembly B 137

Exit assembly and fuser components 139

Fuser unit 139 Fuser latching handle (left) 140 Fuser latching handle (right) 141 Fuser exit roller 142 Exit sensor assembly 144 Duplex guide assembly 146 Eject guide assembly 148 Stack full sensor 149

viii

Phaser 1235 Network Color Printer

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 drive assembly 177

Paper size sensing actuator 179

Paper size sensing board 180

Lower connector 181

Upper connector 183

Tray 2/3 feed roller and nudger roller 185

FRU List 187

Using the parts list 187

Test Prints 211

Wiring Diagram 215

Service Guide

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 Head Test Pattern 68 Print problem caused by dirty LED lens 83 Removing the top cover 87 Removing the left-side cover 88 Removing the right-side cover 89 Removing the rear cover 90 Removing the front cover 91 Removing the face-up tray 92 Removing the right shield plate 93 Removing the electrical chassis 95 Removing the electrical chassis cooling fan 96 Disconnecting the registration motor in-line connector (HOPFF) 97 Removing the printer unit chassis 98 Removing the main cooling fan 99 Removing the top shield plate 100 Removing the harnesses from the electrical chassis 101 Removing the top cover inner frame 102 Removing the left/right top cover spring assembly 103 Removing the lower plate assembly 104 Removing the left paper tray guide assembly 105 Removing the paper tray guide assemblies 106 Removing the right paper tray guide assembly 107 Removing the left plate assembly 108 Removing the system controller board 109 Removing the print engine controller 110 Disconnecting the LED power harnesses 111 Removing the toner sensor board 112

Phaser 1235 Network Color Printer

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 feeder 128 Removing the multi-sheet bypass feeder entrance sensor actuator 129 Removing the tray 1 entrance sensor actuator 130 Removing the belt entrance sensor actuator 131 Removing the transfer belt unit 132 Removing the registration clutch 133 Removing the registration motor assembly 134 Removing the registration roller assembly A and drive gear 136 Removing the registration roller assembly B 138 Removing the fuser unit 139 Fuser latching handle (left) 140 Removing the fuser latching handle (right) 141 Removing the fuser exit roller 143 Removing the exit sensor assembly 145 Removing the duplex guide assembly 147 Removing the eject guide assembly 148 Removing the LED Assembly power connector 149 Removing the stack full sensor 150 Removing the main motor assembly 152 Removing the main feeder drive motor 153 Removing the transfer belt motor assembly 155 Removing the shutter plate 156 Removing the color registration sensor assembly 157 Removing the color registration solenoid 158 Removing an LED assembly 159 Removing the drum contact assembly 160 Disconnecting the LED assembly power harness 161 Removing the toner sensor actuators 162 Removing the duplex unit 163 Removing the feeder control board cover 164 Removing the idler roller assembly 165 Removing the optional feeder inner frame bottom screws 166

Service Guide

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 the feeder drive assembly 178 Removing the paper size sensing actuator 179 Removing the paper size sensing board 180 Removing the feeder control board cover plate 181 Removing the lower connector 182 Removing the feeder control board cover plate 183 Removing the upper connector 184 Removing the tray 2/3 feed roller and nudger roller 185 Cabinet FRUs 189 Top cover FRUs 191 Printer chassis FRUs (1 of 2) 193 Printer chassis FRUs (2 of 2) 195 Paper tray FRUs 197 Paper tray guide FRUs 199 Multi-sheet bypass feeder FRUs 201 Electrical components FRUs 203 Duplexer unit 205 Lower Tray Assembly FRUs 207 Wiring diagram (part 1 of 3) 215 Wiring diagram (part 2 of 3) 216 Wiring diagram (part 3 of 3) 217 Wire routing at the engine controller board 218 Wire routing at the top of the engine controller board 219 Detail of wiring passthru 220 Wiring under the top shield plate 221

xii

Phaser 1235 Network Color Printer

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 - consumables 73 Table 2: Initialization items - calibration points 74 Consumable counter menu items 75 Consumable life-cycle counts 76 Periodically replaced parts 82 FRU parts list of the printer cabinet 188 FRU part list of the top cover assembly 190 FRU part list of the printer chassis (1 of 2) 192 FRU of the printer chassis (2 of 2) 194 FRU of the paper tray 196 FRU of the paper tray guide 198 FRUS of the multi-sheet bypass feeder 200 Electrical components FRUs 202 FRUs of the duplexer unit 204 FRUs of the Lower Tray Assembly 206 Hardware kit 208 Gear kit 208 Sensor flag kit 209 Harness kit 209 Customer replaceable consumables 210

Service Guide

xiii

General Information

This service guide contains information useful for troubleshooting, repairing, adjusting, and maintaining the Xerox Phaser includes troubleshooting guides, adjustment procedures and a ﬁeld replaceable units (FRU) list.

Topics such as printer theory of operation, conﬁguration page details, and verifying printer operation are located on the companion

Resources CD-ROM

To ensure a complete understanding of the product, we recommend participation in Phaser 1235 printer service training.

1235 Color Printer. This manual

Color Printer Service & Support

The Phaser 1235 Color Printer with lower tray feeders

Service Guide

The Phaser 1235 Color Printer

The Phaser 1235 Color Printer combines a 4-color LED-based, tandem-design print engine with an EFI image processing controller board supporting Adobe’s PostScript Level 3 page description language. The controller features a bi-directional parallel interface and an Ethernet port for host communication. The Ethernet port supports EtherTalk 10/100baseT, Novell and TCP/IP. An optional network adapter card allow the printer to communicate with Token Ring networks. All printer versions support the color PCL5C printer language.

The printer is available in three conﬁgurations:

■

The

Phaser 1235N

supplemented with an additional 32-, 64- and 128-Mbyte RAM DIMM; maximum usable capacity is 512 Mbytes. The printer contains 136 standard, built-in fonts. The Phaser 1235N prints at a color resolutions of 600 x 600 dots-per-inch and 600 x 1200 dots-per-inch.

■

The

Phaser 1235DT

128 Mbytes of memory , an auto-duplexer, an internal hard drive and a lower feeder tray assembly. With the hard drive the 1235DT supports a print collation mode, a “First Page Preview” mode and a secure printjob “password” mode.

■

The

Phaser 1235DX

Phaser 1235DT printers but includes 256 MBytes of RAM, two lower feeder tray assemblies and a printer station cart.

The printer supports the following resolutions:

comes standard with 64 Mbytes of RAM which can be

is the same as the Phaser 1235N except it includes

has all the features and capabilities of the

■

600 x 600 dpi (Normal)

■

600 x 1200 dpi (High-quality)

The printer also accepts 300 x 300 dpi ﬁles from PCL legacy drivers, PCL bit map fonts, PCL bit map images, although these ar e imaged at 600 x 600 dpi. The r esolution supported is a function of the PDL used and the feature being selected, such as Fax Friendly Black and Draft Mode. Both PostScript and PCL allow full selection of all paper sources, paper sizes, paper types and output destinations.

The auto-duplexer unit (optional on the Phaser 1235N) allows the printer to automatically create two-sided prints.

Print speeds depend on the chosen resolution and selected media. For resolutions of 600 x 600 (standard), in color, the printer prints at 12 pages-per-minute (ppm) on paper. Monochrome printing is at 20 ppm on paper. Transparency ﬁlm printing is always 5 ppm. For 600 x 1200 dpi (enhanced) color printing, the printer prints color at the same speeds as standard mode.

The printers support printing on A-, A4- and Legal-sized paper and transpar ency ﬁlm from an adjustable tray. Optional lower tray feeders, up to two can be installed, are available. The printer features a built-in multi-sheet bypass feeder from which specialty media, cardstock and envelopes can be fed. The printer also supports manual feeding using the multi-sheet bypass feeder.

Phaser 1235 Network Color Printer

If the printer is equipped with multiple trays loaded with the same-size paper, the printer will switch to an alternate tray as a paper source when a tray runs out of paper.

After being idle for the selected amount of time the printer switches into its Energy Star mode where it consumes less than 45 watts of power. It “awakens” upon receiving data at any of its ports.

Proof Jobs.

customer assigns a password and copy account at the client workstation before printing. The ﬁrst set of prints are printed immediately. The original number of requested sets are printed after the customer enters the matching password on the printer’s control panel. The customer has the option of printing the original number of requested sets or deleting the job. Since more than one job may be associated with the same password, the customer can print all the jobs, delete all the jobs or select or delete individual jobs. A proof job that has not been printed is retained on hard disk through power cycles. Proof jobs sent to a printer without the har d disk option ar e not printed and are discarded.

Secure Jobs.

matching password is entered from the control panel. The customer assigns the password at the client workstation before printing. The job is stored, and printing is delayed until the password is entered on the printer’s control panel. Since more than one job can have the same password, all secure jobs with the same password are printed. A secure job that has not been printed or r eleased is r etained on disk through power cycles. The internal hard drive is required for this function.

TIFF Direct Printing.

itself has no capability to select printing options such as orientation, paper size, or duplexing. All TIFF ﬁles downloaded to the printer are processed using the default PostScript parameters stored in the printer. Auto sensing of TIFF ﬁles are included in the emulation sensing and switching logic when the TIFF option is enabled. TIFF direct printing requires the internal hard drive.

PDF Direct Printing

PDF ﬁles directly requires a hard disk. PDF printing uses the printer’s currently deﬁned imaging settings. Auto sensing of PDF ﬁles are included in the emulation sensing and switching logic when the PDF option is installed. PDF direct printing requires the internal hard drive.

A proof job is a speciﬁc case of a multiple-copy job. With a proof job, the

Secure printing allows the customer to defer printing of a job until a

TIFF ﬁles consist of compressed binary images. The TIFF format

. The printer supports a native PDF image processing. Processing

Hex Mode.

hexadecimal codes as well as the ASCII equivalent. Hex mode pages are numbered and formatted to clearly indicate the order in which data was received. Hex mode is invoked from the control panel’s Print Menu, and remains active until it is explicitly disabled at the control panel or the printer is reset. SNMP data may be processed in Hex mode, since it is not print data. EtherTalk or TokenTalk is not operational in Hex mode, since these protocols require the PostScript interpreter to be running. PostScript and PCL interpreters are not available in Hex mode. When Hex mode is active, all PDL job streams are printed in hex, rather than interpreted. This includes TIFF, PDF, and PJL.

The printer features a hex mode in which all prints are printed as

Service Guide

Printer RAM and printer capabilities

The printer features three DIMM connectors which accept 64-, 128-, and 256-Mbytes RAM DIMMs. The printer can use off-the-shelf RAM meeting these speciﬁcations:

■

168-pin DIMM

■

Synchronous DRAM

■

3.3 volt

■

9 nsec speed

■

Valid on-board Serial Presence Detect ROM.

The Startup page and the Conﬁguration Page list the amount of RAM installed in the printer.

Upon power-up, the image processor interrogates the 256 byte Serial Presence Detect ROM which describes the DIMM with details such as data width, clock delay, number of address columns and row, refresh rate and more. If the DIMM does not meets the required speciﬁcations it the printer reports and “Invalid Memory DIMM Conﬁguration” message and stops the booting process.

If the power-up self-test diagnostics detect a DIMM with defective memory cells the printer declares “Diagnostics Failed - Press Enter to Continue.” After the enter key is pressed the boot process continues and the defective RAM DIMM is ignored. Note that a seriously defective RAM DIMMs (with grounded address lines, for example) can keep the system controller board from booting up at all.

With mor e memory the printer gains the capabilities of printing without having to use image compression (which trades less installed RAM for longer image processing time) and dual frame buffers for printing one image while processing a second image (which gives greater printing throughput).

The printer features three slots each of which can contain a 64-, 128-, or 256-Mbytes SDRAM DIMM. Any slot may be used for any size DIMM. However, 256 Mbyte RAM DIMMs cannot be mixed with smaller RAM DIMMs. DRAM memory totalling beyond 512 Mbytes will be ignored. The image-processing controller board also contains 16 Kbytes of non-volatile memory (NVRAM), to store all for the necessary values that can be set on the printer.

CRU life counter behavior

Internal counters track customer replaceable unit (CRU) life usage and store the values in NVRAM. The controller monitors these counters in order to display the near end of use and end of use messages.

The toner states displayed are OK, Low, and Empty, where the engine senses and automatically reports the Low and Empty states. When the empty state is r eached for toner, the printer terminates printing at the end of current page and displays the appropriate message on the control panel. No further jobs are accepted from any input port.

Phaser 1235 Network Color Printer

Print engine assemblies

Paper size sensing board

Low voltage power supply

Duplex control (in duplexer)

High voltage power supply

Print engine circuit boards

Toner sensor board

Control panel assembly

Entrance sensor board

7098

Service Guide

Print engine controller board

Optional feeder

Print engine circuit boards (cont’d)

System controller board

Feeder control

Paper-size sensing board

7099

Phaser 1235 Network Color Printer

Stack full sensor

Toner cartridge sensors

Exit sensor

Color registration sensor assembly

Waste toner sensor

Entrance cassette sensor

Belt entrance sensor

Temperature sensor

Humidity sensor

Registration entrance sensor

Top cover interlock switch

Front cover interlock switch

7100

Print engine sensor and switch locations

Service Guide

Multi-sheet bypass tray empty sensor

OHP sensor

Stack full sensor

Multi-sheet bypass position sensor

Print engine sensor and switch locations (cont’d)

Fuser exit sensor

Belt entrance sensor

7101

Phaser 1235 Network Color Printer

Duplex Gate solenoid

Registration shutter solenoid

Transfer belt motor assembly

Registration motor

Registration clutch

Main feeder drive motor

Duplex drive assembly

Print engine motors, clutches and solenoids

7102

Service Guide

Feeder motor

Optional feeder

Optional feeder motor and clutch

Phaser 1235 Network Color Printer

Feeder clutch

7103

The image processor board

Token ring card

SDRAM

Fan cooled processor

Features of the controller board

Hard drive

0728-05

Service Guide

The control panel

The control panel consists of eight labeled keys. These keys navigate the menu system for printer operations. Two LEDs on the display indicate On Line and active faults. The LCD display is two lines by twenty-four characters wide.

Menu up/down

Item up/down

Value up/down

The control panel

Key 0 places the printer off-line or on-line. Key 4 is an Enter key. The pairs of keys 1 and 5 are used to scroll through the main menu. Keys 2 and 6 navigate the sub menus, and Keys 3 and 7 scroll sub-menu values.

On Line LED

Green in color, this LED indicates when the printer is “On Line” and ready to process data. When transitioning from “On Line” to “Off Line”, the LED ﬂashes at a rate of two times per second. When data is being received and processed, the LED ﬂashes at a rate of once per second.

! Fault

Red in color , this LED illuminates whenever operator intervention is required, such as a paper jam in the printer.

Phaser 1235 Network Color Printer

Rear panel

The rear panel of the printer features the host interface connectors:

■

Bi-directional parallel IEEE 1284-B connector.

■

Twisted Pair 10/100baseT Ethernet connector. With the addition of the Token Ring card the printer can connect to Token Ring network via its Ethernet interface.

Ethernet port

Parallel port

The printer rear panel

0728-03

Service Guide

Accessing special operating modes

The printer can be placed in diagnostics or other operation modes by simultaneously holding the

Menu Up (1)

Entering special operating modes

Key Combination Mode

On Line (0) and Enter (4)

Menu Up (1) and Menu Down (5)

Menu Up (1) and Enter (4)

Enter (4) and Value Down (7)

and the

This enables the The Reset Menu is not normally available to the customer, as it contains

the ability to format devices and perform a factory reset of all items. The control panel displays To exit, switch the printer power off, then on.

This forces the The Control Panel will display

Mode

on the second line. This indicates that the printer is ready to be

have its ﬁrmware ﬂash updated. To exit, switch the printer power off, then on.

Forces the printer into the controller.

The control panel displays that the printer is ready to enter diagnostics.

To exit, switch the printer power off, then on. This reinitiates the NVRAM to factory defaults for all values except copy

counts. The control panel displays

Enter (4)

Reset Menu

Software Update Mode

keys as you turn on the printer.

to become available at the control panel.

Ready

when completed.

Entering...

Engine Diagnostics Mode

Diag Mode 1?

Ready

when complete.

on the parallel port.

on the ﬁrst line

in the ﬁrst line. This indicates

and Download

, bypassing the

System controller board LEDs

A power LED (PWR), when illuminated, indicates +5V is being supplied to the system controller board.

The LED HDD, illuminates to ﬂashes to indicate hard drive read/write activity. LED GIO2 ﬂashes to indicate proper CPU operation. LED GIO3; off indicates 10baseT connection, on indicates 100baseT.

off

The LED LNK is

when the printer is not installed on an Ethernet network,

while data is transmitted to the host. When the optional Token Ring Card is installed, the LED LNK indicates the operation

of the Token Ring Card (Ethernet port operations are disabled). The LED Connection

off

when the printer is not inserted into the Token Ring,

is attempting to insert itself into the Token Ring,

when the printer is properly inserted

blinks

while the printer is

in the ring.

off

The LED SPD, located next to the LNK LED, is

per-second (MBPS),

Phaser 1235 Network Color Printer

when the card is set for 16 MBPS.

when the card is set for 4 megabits-

blinks

Paper tray type sensing

The positions of four tab pieces are set according to the position of the paper guide. A cam interlocks the tabs with the paper guide of the paper tray.

Upon insertion of the tray in the printer , four actuator tabs activate four switches. The combinations of the tab position indicate the size of the paper in the tray.

Paper size detection

State of Microswitch Paper Size SW1

(top)

0000No tray installed 0111Letter 0101Executive 0011A4 1110Legal 14 1011Legal 13 1101B5 1100A5 1001A6

SW2 SW3 SW4

(bottom)

Rotating sensor actuators (side of tray) Paper size sensors

Tray switch sensors and actuators

0728-04

Service Guide

Speciﬁcations

Physical dimensions

Dimensions Speciﬁcation

Height: 16.9 cm (43.0 in.) Width: 43.0 cm (16.9 in.) Depth: 62.0 cm (24.4 in.) Weight: About 51 kgs (112.2 lbs.)

Printer clearances

Clearances Speciﬁcation

Top: 91.5 cm (36 in.) Left: 30.5 cm (12 in.) Right: 30.5 cm (12 in.) Front: Unlimited for removal of consumables Rear: 61 cm (24 in.) for connecting computer cable and power cord Mounting surface

ﬂatness:

Maximum deviation of 50 mm from horizontal, side-to-side, with all four feet in contact with the table surface.

Phaser 1235 Network Color Printer

Functional speciﬁcations

Characteristic Speciﬁcation

Printing process Electro-photographic, four color (CMYK) tandem transfer printing Color medium Four toner cartridges each contain one of four colors: cyan, magenta,

Addressability 600 x 1200 dpi text and graphics Printing speed

(A, A4)

Minimum printing margins

Usable paper Tray: A-size (letter), Legal, Folio, Executive (7.25 x 10.5 in.)

yellow or black. The toner is a nonmagnetic, monocomponent contact medium.

Time from paper-load to paper-eject for continuous A, A4 printing: Four-color: 12 ppm Monochrome: 20 ppm Four-color transparency: 5 ppm Monochrome transparencies: 12 ppm Print times do not include image processing time, which can vary depending on image complexity.

All sides 4.2 mm (0.167 in.),

A4-size (metric letter), A5, B5, and A6 use only premium bond laser printer or copier paper Tray feed paper weight: 60 to 176 g/m2 (16 to 47 lb.) Minimum paper size: 148 mm x 210 mm (5.83 x 8.27 in.)

Multi-sheet bypass feeder: A-size (letter), Legal, Folio, Executive (7.25 x 10.5 in.), A4-size (Metric letter), A5, B5, and A6. Minimum paper size is 76 x 127 mm (3 x 5 in.)

Only

Xerox-brand Phaser 1235 A- and A4-size transparency ﬁlm is

supported.

Paper tray capacity

Multi-sheet Bypass Feeder - 16 lb. to 54 lb. (60g/m2 to 203g/m2) Two-sided printing: 75 to 105 g/m2 (20 to 28 lb.)

Tray 1: 530 sheets of paper or 175 transparencies. Tray 2 and Tray 3: 530 sheets of paper. Multi-sheet Bypass Feeder: single sheet to 100 sheets of standard

paper. Varying number of env

Multi-sheet Bypass Feeder can use media in the 20 to 60 gm2 range.

elopes and other special stock. The

Service Guide

+ 200 hidden pages