Tektronix Phaser 840 Service Manual

PHASER® 840 COLOR LASER 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: May 1998 071-0388-00

Copyright © 1998 by Tektronix, Inc., Wilsonville, Oregon. Printed in the United States of America. All rights reserved. Contents of this publication may not be reproduced in any form without permission of Tektronix, Inc.

Tektronix

, Phaser®, and Made for Each Other® are registered trademarks of Tektronix, Inc. TekColor™, PhaserShare™, PhaserMatch™, PhaserLink™, Finepoint™ and PhaserPrint™ are trademarks of Tektronix, Inc. RealSUPPORT

and TekColor CareSM are service marks of Tektronix, Inc.

Other marks are trademarks or registered trademarks of the companies with which they are associated.

November 1998. First printing

December 1998. Changed pages: 41, 60, 76, 84, 85, 108, 126, 133

May 1999. Changed pages: 5, 61, 62, 68, 74, 112, 118, 124, 126, 127, 147, 149

TE/mq/mm

User safety summary

Terms in manual

CAUTION Conditions that can result in damage to the product.

WARNING Conditions that can result in personal injury or loss of life.

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 250 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.

WARNING Turning the power off using the On/Off switch does not de-

Safety instructions:

product into a power source.

For 110 VAC printers, Do not apply more than 130 volts RMS

Avoid electric shock by contacting a qualiﬁed service

energize the printer. You must remove the power cord to disconnect the printer from the mains. Keep the power cord accessible for removal in case of an emergency.

Read all installation instructions carefully before you plug the

Terms on product

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.

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 product needs servicing or repair, and whenever you clean the product.

Ground the product:

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

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

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:

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 250 volts rms 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 product

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

Phaser 840 printer overview 2 Solid inks 3

About RAM upgrades 3 Memory considerations 4 Print engine assemblies 6 The main board 14

Combination sensors and their meanings 15

Media tray type sensing 15

Front panel 16 Rear panel 18

Regulatory specifications 24

Error Codes and Messages 25

Rear panel LEDs error codes 25 Error messages 28

Troubleshooting 37

System power-up sequence 37

Verifying main board CPU operation 39 Verifying print engine operation by printing its startup page 39 Verifying power supply operation 39

Measuring power supply voltages 40

Inspecting the power supply fuses 40 Testing for shorted drivers 41 Testing for a shorted motor 42 Testing motor and solenoid resistances 42 Media jams and the paper path 43

Media-based problems 43 Paper-pick errors 43 Print transfer jams 44 Checking the process motor and drive train 45 Media skews passing through the paper path 45

Printing and print quality problems 46

Streaks or lines across the print 46 Streaks or lines down the print 46 Missing ink or light colored ink band running length of print 47 Scratches parallel to the long axis of printing, particularly with film 48 White portion of print is colored 48 Color is uneven 49 Not printing 49

Service Guide

Printing too light or too dark 49 Fuzzy text 50 Poor primary color fills 50 Poor small text resolution 51 Ghosting 51 Variation of density on second side of print 52 Ghost of first side image on second side of print 52 Vertical line appear wavy 52 Oil streaks on print 53 Poor ink adhesion, poor image durability 53 Incomplete image transfer to paper 54 Ink smears of first side of duplex print 55 Repeating print defects on print 55 Banding parallel to long edge of print 56 Wrinkling 56 Image is offset or cut off 57 Oil streaks on top of print 57

Macintosh printing problems 57

Image never prints 57 Image prints in black-and-white 58 Image is rotated 90 degrees 58 Printer isn’t in the Chooser 58

Windows printing problems 58

Image never prints 58

Adjustments 59

Bypass mode (manufacturing mode) 59 Cool down mode 59 Hidden service menu 60

Bypassing a “short menu” 60 Printing service test prints 61 Printing the Configuration Page 61 Selecting Duplex Oil Chase 61

Adjustments 62

Process belt tension adjustment 62 Exit roller drive belt tension adjustment 63 Y-axis belts tension adjustment 64 Printhead-to-drum spacing adjustment 66 Cap/wipe/purge assembly belt adjustments 68 Drum position encoder gap 70 Transfix roller pressure spring adjustment 72 X-axis scale adjustment 74

Vacuum check 75

Phaser 840 Color Printer

Cleaning and Maintenance 77

Cleaning 78

Cleaning Page 79 Vacuum 79 Drum temperature sensor 79

Maintenance 80

Maintenance roller 80

Waste tray 80 Lubrication 81 Inspection 82

Resetting NVRAM 83

Key FRU Removal and Replacement 87

Main board 88

Power supply 89

Power control board 90

Paper/drum heater 91

Upper feed roller assembly 92

Drum/transfix assembly 94

Drum position sensor assembly 99

Printhead 101

X-axis motor and drive assembly 104

Y-axis belt drive assembly 105

Cap/wipe/purge assembly 106 Locking the printhead 108

FRU List 109

High-capacity Paper Tray Assembly 126 Service tools 128 Supplies and accessories 128

Test Prints 133

Wiring Diagrams 145

Service Guide

vii

Figures

The Phaser 840 printer (shown with optional High-capacity Paper Tray Assembly) 1

Internal features of the print engine 6 Circuit boards of the print engine (right front view) 7 Circuit boards of the print engine (left-rear view) 8 The printer’s I Printhead maintenance system of the print engine 10 Sensors and switches on the right side of the print engine 11 Sensors and switches on the left side of the printer 12 Solenoids and clutches on the print engine 13 Features of the main board 14 Printer front panel 17 Printer rear panel 19 Attaching the service load connector to J250 41 Setting process belt tension 62 Setting exit roller drive belt tension 63 Setting the Y-axis belt tension 65 Attaching the digital gap indicator 66 Spacing the printhead to the drum 67 Aligning (timing) the cap/wipe/purge assembly drive belts 69 Setting the drum position encoder gap 71 Adjusting the transfix roller pressure springs 73 Adjusting the x-axis scale adjustment 74 Connecting the vacuum gauge to the printer 75 Resetting print engine NVRAM menu item 84 Clearing PostScript NVRAM menu item 85 Removing the main board 88 Removing the power supply 89 Removing the power control board 90 Removing the paper/drum heater 91 Remove the upper feed roller assembly (left side) 92 Removing the upper feed roller assembly (front) 93 Removing the drum transfix assembly (left side) 95 Removing the drum/transfix assembly (right side) 97 Marking the drum home flag sensor alignment 99 Removing the drum position sensor assembly 100 Plugging the reservoir holes 101 Removing the printhead 103 Removing the x-axis motor and drive assembly 104

C bus 9

viii

Phaser 840 Color Printer

Removing the Y-axis belt drive assembly 105 Removing the cap/wipe/purge assembly 107 Cabinet FRUs 111 Imaging FRUs 113 Paper path FRUs 115 Motors and fans FRUs 117 Circuit boards FRUs 119 Solenoids and clutches FRUs 121 Gears and belts FRUs 123 Sensors and flags FRUs 125 High-capacity Paper Tray 127 Print engine wiring diagram 145 Wire routing on the right side of the printer near right I/O board 146 Wire dressing above the x-axis drive 147 Vacuum hose dressing 148 Routing wiring on the left side of the printer 149 Wire dressing behind the printhead 150

Service Guide

Tables

Installed RAM and printer capabilities 4 Tray switch sensor combinations 15 Rear panel DIP switch settings 19 Physical dimensions 20 Printer installation clearances 20 Functional specifications 21 Electrical specifications 22 Environmental specifications 23 Main board power-up self-test error codes 25 Front panel and fault history log error codes and messages 28 Motor and solenoid resistances 42 Hidden Service Menu 60 Cabinet FRUs 110 Imaging FRUs 112 Paper path FRUs 114 Motors and fans FRUs 116 Circuit board FRUs 118 Solenoid and clutches FRUs 120 Gears and belts FRUs 122 Sensors and flags FRUs 124 High-capacity Paper tray FRUs 126 Service tools 128 Supplies and accessories 128

Phaser 840 Color Printer

General Information

This service guide contains information useful to verify operation, troubleshoot, repair, adjust, and maintain a Tektronix Phaser® 840 Color Printer. This guide includes a Field Replacement Unit list.

Topics such as printer theory of operation, detailed removal/replacement procedures, conﬁguration page details, and verifying printer operation are located on the companion

To ensure complete understanding of the product, we recommend participation in Phaser 840 printer service training, if available.

Color Printer Service & Support Resources CD-ROM

0388-01

The Phaser 840 printer (shown with optional High-capacity Paper Tray Assembly)

Service Guide

Phaser 840 printer overview

The Phaser 840 Color Printer is an Adobe PostScript Level 3 (Version 3010) color, solid ink-jet printer. It also supports color PCL 5C at 600 x 600 dots-per-inch resolution. The Phaser 840 printer prints at a number of resolutions: A 10 pageper-minute (ppm) Fast Color Mode, a standard 5.7 ppm mode, an Enhanced mode of 491 x 982 dpi at 3.3 ppm and a High-Resolution/Photo mode of 600 x 1200 dpi at 2.2 ppm.

All printer models but the standard version feature built-in auto-duplex printing.

Standard Phaser 840 printer .

and is equipped with 32 Mbytes of RAM. It can be upgraded to as much as 128 MBytes of RAM using any combination of two 16-, 32-, and 64-Mbyte RAM DIMMs.

The Phaser 840 Plus printer.

printer to 64 Mbytes of RAM. It include a SCSI port daughter card to support an external SCSI disk for additional font storage as well as a scanner. Special circuitry on the SCSI port daughter card enables additional features like duplex printing, job pipelining and Check Print mode. With job pipelining, the printer can print one image and process the data for the next image at the same time. Check Print mode prints the ﬁrst page of a multiple page print job while holding the remainder of the job pending front panel approval.

The Phaser 840 Extended printer.

of the Phaser 840 Plus printer but includes additional RAM to bring the printer to 128 Mbytes of RAM. It also includes a High-capacity Paper Tray and an internal IDE hard drive.

All printers support four available paper trays: Two A and A4 trays are meant for paper and low volumes of transparencies; two other A and A4 trays are meant for label stock and high-volume transparencies. The optional 500-sheet Highcapacity Paper Tray Assemblies gives the printer a two-tray capability. With the addition of a second High-capacity Paper Tray, the printer has a three tray capability. (The High-capacity Paper Tray Assembly is sometimes referred to as a lower feeder; it only supports paper printing.) The printer can also print six sizes of handfed envelopes in low volumes.

A 133-MHz PowerPC processor oversees print engine operations and PostScript image processing. The printer features an integral bi-directional parallel port (IEEE 1284C with ECP mode) and a 10baseT Ethernet port (with support for EtherTalk, Novell NetWare/NDS, TCP/IP, DHCP and Windows Peer-to-Peer). A USB high-speed serial port is also provided. A rear panel slot allows customers to install one “smart card” PhaserShare Series B Network Card. One card provides a LocalTalk port. A second, alternative card offers a 10BaseT/ 100BaseT/10Base2 Ethernet board providing standard protocol support for EtherTalk, Novell NetWare/NDS, TCP/IP and DHCP. When installed, this card disables the standard 10baseT port. A third card provides a Token Ring board providing protocol support for TokenTalk, Novell NetWare/NDS and TCP/IP. When inserted, this card also disables the standard 10baseT port.

The base Phaser 840 printer features 136 built-in fonts,

The Phaser 840 Plus printer option upgrades the

The Extended Features option has all the features

A second rear panel slot accommodates an internal IDE hard drive for print job collation, job accounting, font storage and PDF direct printing.

Phaser 840 Color Printer

The printer features Job Accounting, which maintains from 50 to 5000 records of processed print jobs, depending on memory options and hard drive options. The record contains information such as time and duration of the print and the percentage of color coverage on the print. The log of records can be retrieved using PhaserLink or PhaserShare.

Solid inks

Solid inks, sometimes called phase-change inks, are solid at room temperature and are liquid at the higher temperature used during printing. The inks solidify almost instantly after being jetted onto the printer’s drum. Because Tektronix' proprietary solid inks bleed much less than ordinary liquid inks, they allow the printer to print brilliant colors on plain paper. Each Tektronix solid-ink printer inks are especially formulated for that printer; the inks are not interchangeable.

Note

Turning the printer off and allowing it to cool causes it to perform a printhead cleaning and purge cycle upon power-up. The printer's purge cycle consumes a signiﬁcant amount of ink. During normal use and servicing, turn the printer off and allow it to cool only when necessary.

About RAM upgrades

The printer features two DIMM connectors which accept both 32-, or 64-Mbytes RAM DIMMs (16-Mbyte RAM DIMMs work but are not offered). The printer can use SDRAM DIMMs meeting these speciﬁcations:

■

168-pin DIMM

■

Synchronous DRAM

■

3.3 volts

■

10 nsec speed

■

Valid on-board Serial Presence Detect ROM

■

Unbuffered

■

Latency of 2

■

9 address columns

■

Maximum of 2.8 cm (1.1 in.) in height. SDRAM DIMMs from other Phaser printers, such as the Phaser 740 and Phaser 780 color printers may be too tall to ﬁt inside a Phaser 840 printer.

Upon power-up, the image processor interrogates the 256 byte Serial Presence Detect ROM, which describes the DIMM in great detail, such as data width, clock delay, number of address columns and row, refresh rate and more. If the DIMM does not meet the required speciﬁcations, it will be ignored; no error message will be reported.

Service Guide

Memory considerations

With more memory the printer dual frame buffers for printing one image while processing a second image (which gives greater printing throughput). With additional RAM memory, and the SCSI daughter card installed (the Plus and Extended conﬁgurations), the printer’s capabilities increase as detailed in the following table:

Installed RAM and printer capabilities

Feature Base (32 Mbytes) Plus conﬁguration

Fast Color (draft) printing

Standard Printing yes yes yes Enhanced Printing yes yes yes High-Resolution/

Photo Printing Duplex printing no yes. The printer

Color PCL 5C yes yes yes Pipelining no yes yes Check Print no yes yes Collation (requires

hard drive) PDF printing.

Requires hard drive Job accounting 50 records 500 records. 5000

Frame buffer (lower print resolutions can provide additional frame buffer space)

yes yes yes

no yes yes

no Standard. Standard.

1 Letter size image 1 Letter-size image 2 Letter-size images

(64 Mbytes)

requires at least 80 Mbytes of RAM to print duplexed, highresolution, 1200 x 600 dpi prints

records with optional hard drive

Extended conﬁguration (128 MBytes)

yes

5000 records with included hard drive

Phaser 840 Color Printer

Print the Conﬁguration Page and check the item “Installed RAM” to see what type of RAM is installed.

For example:

Installed RAM: 64 Mbytes Mem slot 1: SDRAM/parity/64 MB/KMM366S823BTL-G0 Mem slot 2: empty

This is a list of SDRAM DIMMs that are branded for use by Tektronix in this printer at the time this guide was published:

Size

32 Mbytes Samsung KMM366S403CTL-G0

32 Mbytes Micron MT166LSDT464Ag-66ZXX

64 Mbytes Samsung KMM366S823BTL-G0

64 Mbytes Micron/Crucial CT8M64S4D10-MBTBGLP

Maker Part Number

Service Guide

Print engine assemblies

Cap/wipe/purge assembly

Drum

Transfix roller

rocess

otor

Paper/ drum heater

Y-axis motor

Printhead

Paper feed motor

Ink load assembly

X-axis drive and motor

0388-0

Internal features of the print engine

Phaser 840 Color Printer

Six circuit boards support the printer’s electronics. Two boards, called I/ O boards, support the front panel, solenoids and sensors. The main board contains the printer’s CPU processor, RAM and ROM. The power control board distributes power supply voltages to the other printer boards as well as drive many printer motors. The front panel provides a user interface to the printer. The printhead drive board, a part of the printhead, manages the signals and voltages of the printhead’s printing elements and sensors. The optional network card and internal hard drive could be considered a seventh and eighth circuit boards.

Front panel

Circuit boards of the print engine (right front view)

I/O board right

Service Guide

0388-03

Printhead drive board

Internal hard drive

Network card

Power supply

Main board

Circuit boards of the print engine (left-rear view)

Drum Maintenance counter EEPROM

Power control board

I/O board left

0388-04

Phaser 840 Color Printer

An internal data bus, called the I2C bus, connects all I/O boards to the main board. Through this single bus, the main board can “poll” the I/O boards for the state of the printer’s sensors as well as actuate the printer’s solenoids. This data bus greatly simpliﬁes the wiring that would otherwise be required for monitoring numerous sensors and solenoids. The I

C bus also extends down to the High-

capacity Paper Trays.

High capacity Paper T ray connection

The printer’s I2C bus

Service Guide

I2C bus

0388-05

The printer features a printhead maintenance system used to clean the printhead faceplate and clear clogs from the printhead nozzles. The system consists of a vacuum pump assembly, the cap/wipe/purge assembly and the cap/wipe/ purge carriage drive.

Cap/wipe/purge carriage drive

Cap/wipe/purge assembly

Printhead maintenance system of the print engine

Phaser 840 Color Printer

Vacuum pump assembly

0388-06

Sensors in the printer provide information to the main board to determine the state of the printer. The printer monitors the positions of some of the movable assemblies, such as the drum, as well as the temperature of many other assemblies, such as the printhead, paper preheater and the drum.

Ink load cover sensor

Top cover switch

Front cover switch

Preheater entry/left edge sensor

Ink-sticklow sensor

Ink-stickout sensor

Exit / tray-full sensor

A4-size media sensor

A-size media sensor

Cap/wipe/purge home sensor

Maintenance blade position sensor

Hand-feed sensor

Paper-pick sensor

Tray type sensors

Paper-empty sensor

Sensors and switches on the right side of the print engine

Service Guide

0388-07

Transfix exit sensor

Drum temperature sensor

Duplex paper sensor

Drum-homeposition sensor

Drum encoder sensor

Process gear position sensor

Preheater exit sensor

Transfix roller

Preheater exit sensor located on inside wall of drum/transfix frame

Drum

Sensors and switches on the left side of the printer

Phaser 840 Color Printer

Preheater

0388-34

Caution

Electric clutches and solenoids are used by the printer to engage rollers as needed to move paper through the printer as well as start some print processes.

The actual position of some printer assemblies, such as the printhead or the cap/wipe/purge assembly, cannot be ascertained at all times. The printer records, in NVRAM, where it last positioned such assemblies each time it moves them. If, after power-down or a power interruption, the assemblies are manually repositioned, the printer erroneously assumes that the assemblies are in the position it last left them. This assumption can result in damage to the printer when it tries to position the assemblies. For example, the printhead could be tilted forward and crash into the raised cap/wipe/purge assembly.

Before turning on the printer, ensure the printhead is tilted forward, centered in front of the drum and the cap/wipe/purge assembly is in the retracted, home position. The tilt cam gear should be disengaged from the gear drive train.

Upper feed roller clutch

Pick clutch

Drum maintenance cam clutch

Cap/wipe/purge clutch

Air valve solenoid

Transfix solenoid

Solenoids and clutches on the print engine

Service Guide

0388-0

The main board

The main board features the printer’s PowerPC processor that controls the engine and the PostScript processing. Prominent on the main board is the ROM code DIMM and the RAM DIMM plug-in modules. The code ROM DIMM also contains the printer’s on-board fonts. Variations of the ROM code DIMM contain alternate language fonts such as Kanji or Hangul.

Network connection is provided through a built-in 10baseT port. A plug-in SCSI interface adaptor board provides a SCSI port for an external hard drive or scanner.

The printer stores unique printer status and PostScript values in its NVRAM module. The printer’s Ethernet address, unique to each printer, is stored in the printer ID chip, an 8-pin socketed IC. All these socketed components should be transferred to a replacement main board to maintain customer-unique settings.

SCSI riser board

Boot ROM/ Printer ID

Features of the main board

RAM DIMMs

NV RAM/ Real Time Clock

Code ROM DIMM

0388-09

Phaser 840 Color Printer

Combination sensors and their meanings

Combinations of sensors are used by the printer to determine the type of standard (or upper) media tray installed in the printer.

Media tray type sensing

The combinations of the three tray sensors inform the print engine what type of media tray is installed. (The print engine does not detect the type of media installed in the tray; it only detects the particular tray being used by the presence of sensor ﬂags on the side of the tray.) The tray sensors are located on the right-side interior of the paper tray slot, mounted on I/O board right. There are four tray types:

■

Letter (A-size).

low-volumes of A-size transparency ﬁlm.

■

Metric Letter (A4-size).

paper as well as low-volumes of A4-size transparency ﬁlm.

■

High-volume Transparency/Label (A).

volumes of U.S.-size transparency ﬁlm as well as laser quality, adhesive label stock.

■

High-volume Transparency/Label (A4).

volumes of Metric-size transparency ﬁlm as well as laser quality, adhesive label stock.

Table 1 Tray switch sensor combinations

This tray is sized for 8.5 x 11-inch (U.S.) paper as well as

This tray is used for 210 x 297 mm (Metric)

This tray supports high

Tray type A Paper A4 Paper A Transparency A4 Transparency

Top switch Closed Open Closed Open Middle switch Open Closed Open Closed Bottom switc

h Open Open Closed Closed

Service Guide

Front panel

These front panel features are found on the printer:

■

128 x 64 pixel backlit graphic display

■

Two push buttons and four arrow buttons

■

Two LEDs

LCD.

The backlit LCD serves two purposes: displaying current image processor and print engine status information and displaying an interactive menu. Status information includes image processor status such as

Receiving data Out of paper, Paper Jam, Add ink

Customers can review and modify certain NVRAM, I/O ports and peripheral parameters. Using the front panel to review and change parameters is discussed in the topic, “Adjustments” on page 59.

and

Printing

. Print engine status includes messages such as

as well as error messages.

Ready to print

Buttons.

other two buttons are used as Select and Help.

In addition, when in the troubleshooting menu, pressing the

Select

Pressing and holding the immediately to the language selection menu.

Holding the correctly parked by ﬂashing both front panel LEDs.

Turning the printer on with the rear panel DIP 2 in the “down” position, allows access to the front panel during the warm-up cycle.

Four of the six buttons are arranged as a diamond-shaped keypad. The

button enters the hidden service support menu.

Left arrow

Right arrow

while turning off the printer will conﬁrm the printhead is

and the

Select

button proceeds

Left arrow

and the

Phaser 840 Color Printer

The topic “Resetting NVRAM” on page 83 explains how to use the front panel buttons to reset the NVRAM to its factory-default values.

Navigation buttons

Power

READY TO PRINT

Error

Printer front panel

Help button

Select button

0388-10

Service Guide

Rear panel

Connectors

The rear panel of the printer features the host interface connectors to the printer; it includes the following connectors:

■

Standard parallel (high-density connector), IEEE 1284C

■

Twisted Pair (10BaseT) Ethernet connector

■

A Universal Serial Bus port

■

Optional SCSI high-density connector (hard disk drive or Tektronix approved scanner).

■

A special 5-pin connector accommodates a service RS-232 cable from a PC or Macintosh computer running PC-based diagnostics.

The rear panel also includes two option slots. With the addition of a PhaserShare network card in one slot, the printer can feature either of these connector combinations:

■

LocalTalk connector

■

ThinNet (10Base2) and Twisted Pair (100BaseT) Ethernet or Token Ring connectors.

Note

When an Ethernet or TokenRing PhaserShare card is installed, the printer’s built-in 10BaseT Ethernet port is disabled.

The second slot accommodates an internal IDE hard drive for print job collation, job accounting, font storage and PDF direct printing.

Health LEDs

Two health LEDs indicate the status of the printer’s CPU functions: PostScript processing and print engine control.

■

Blinking

: The printer is operating normally. Both LEDs blink

irregularly during diagnostics.

If a soft error occurs, image processing occurs, but in a reduced capacity. Soft failures include failure of expansion memory DIMMs or any of the interface ports. When a soft error occurs, the printer automatically prints a startup page listing the error.

■

Off, or blinking a coded error indication

: A hard error condition has occurred that would keep the image processor board from operating. Refer to the topic “Error Codes and Messages” on page 25 for the meaning of a coded indication.

Phaser 840 Color Printer

Switches

Four DIP switches allow you to reset the printer or place the printer in different operating modes.

Table 2 Rear panel DIP switch settings

Function Switch 1 Switch 2 Switch 3 Switch 4

Normal operating mode UP UP UP UP Service mode DOWN UP UP UP Reset printer UP UP UP DOWN Manufacturing mode (Bypass

UP DOWN UP UP

mode) Development mode (engineering

DOWN DOWN DOWN UP

use only) Recovery mode (engineering use

DOWN UP DOWN UP

only)

The following ﬁgure illustrates the rear panel of the printer.

IDE hard drive

Network card

PostScript

PhaserShare

Series B

Ethernet Card

health

100 Mbs

TP LINK

10/100Base-TX

10Base2

light

Engine health light

SCSI

Service

RS-232

Printer rear panel

Ethernet

10BaseT

Parallel

USB

DIP

switches

Service Guide

0388-11

Physical dimensions

Dimensions Value

Height: 38.7 cm. (15.25 ins.)

Width: 40 cm (17.25 ins.) Depth: 57.8 cm (22.75 ins.) Weight: Approximately 36 kgs (79 lbs). Print engine weight only;

51.4 cm (20.25 ins.) with one High-capacity Paper Tray Assembly

64.1 cm (25.25 ins.) with two High-capacity Paper Tray Assemblies

add 9 kgs (20 lbs.) for each optional High-capacity Paper Tray Assembly.

Printer installation clearances

Clearances Value

Top: 45.7 cm (18 ins.) Left: 10.2 cm (4 ins.) Right: 10.2 cm (4 ins.) Front: Unrestricted to replace trays and clear paper jams Rear: 10.2 cm (4 ins.) Bottom: No obstruction under printer that could block its cooling

vents.

Mounting surface ﬂatness:

Phaser 840 Color Printer

Within 3 degrees of horizontal with all four feet in contact with the surface.

+ 130 hidden pages