Tektronix Phaser 350 Service Manual

Service Manual

Phaser

™

340

Color Printer

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 Febuary 1996 070-9100-01

1996 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.

This instrument, in whole or in part, may be protected by one or more U.S. or foreign patents or patent applications. Information provided upon request from Tektronix, Inc., P.O. Box 1000, Wilsonville, Oregon 97070-1000.

If acquired subject to FAR or DFARS, the following shall apply:

■

Unpublished — rights reserved under the copyright laws of the United States.

■

Restricted Rights Legend — Use, duplication or disclosures by the government is subject to restrictions as set forth in subparagraph (c) (1) (ii) of the Rights in Technical Data and Computer Software at DFARS 252.227-7013, or in subparagraph (c) (2) of the Commercial Computer Software – Restricted Rights clause at FAR 52.227-19, as applicable. Tektronix, Inc., P.O. Box 1000, Wilsonville, Oregon 97070-1000.

Tektronix

is a registered trademark of Tektronix, Inc. TekColor™ and Photoﬁne™ are trademarks of Tektronix, Inc.

Phaser™ is a trademark of Tektronix, Inc. for color printers and related products.

Adobe™ and PostScript™ are trademarks of Adobe Systems, Incorporated which may be registered in certain jurisdictions.

PowerBook®, Macintosh® and EtherTalk® is a registered trademark of Apple Computer, Incorporated.

Times™, Helvetica™, and Palatino™ are trademarks of Linotype-Hell AG and/or its subsidiaries.

Micronta® is a registered trademark of Radio Shack.

Microsoft® and Microsoft Windows® are registered trademarks of Microsoft Corporation.

Novell® and NetWare® are registered trademarks of Novell, Inc.

OS/2® is a registered trademark of International Business Machine Corporation.

PANTONE

* Colors generated by the Phaser 340 Color Printer are four-color process simulations and may not match PANTONE-identiﬁed solid color standards. Use current PANTONE Color Reference Manuals for accurate colors.

PANTONE Color simulations are only obtainable on these products when driven by qualiﬁed Pantone-licensed software packages. Contact Pantone, Inc. for a current list of qualiﬁed licensees. * Pantone, Inc.’s check-standard trademark for color reproduction and color reproduction materials. © Pantone. Inc., 1988.

TCP/IP is a trademark of FTP Software. Copyright (c) 1986, 1987, 1988, 1989 by FTP Software, Inc. All rights reserved. PC/TCP for DOS is based on a set of programs originally designed and developed by the Massachusetts Institute of Technology. FTP Software has made extensive modiﬁcations and enhancements to the M.I.T. programs.

TokenTalk® is a registered trademark of Apple Computer, Incorporated.

TORX™ is a trademark of TEKTRON.

The X Window System™ is a trademark of Massachusetts Institute of Technology.

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

TE/JG/CC

Users safety summary

Terms in manual:

Power source:

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:

product. Do not operate without the covers and panels properly installed. Do not operate in an atmosphere of explosive gases.

Safety instructions: Terms on product:

Care of product:

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.

CAUTION Conditions that can result in damage to the product. WARNING Conditions that can result in personal injury or loss of life.

Do not apply more than 250 volts RMS between the supply conductors or between either supply

Avoid electric shock by contacting a qualiﬁed service technician to replace fuses inside the

WARNING Turning the power off using the On/Off switch does not de-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 product into a power source.

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. Disconnect the power plug if the

Ground the product:

necessary, contact a licensed electrician to install a properly grounded outlet.

Symbols as marked on product:

DANGER high voltage:

Protective ground (earth) terminal:

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

Plug the three-wire power cord (with grounding prong) into grounded AC outlets only. If

WARNING:

cause an electrical shock. Electrical product may be hazardous if misused.

If the product loses the ground connection, usage of knobs and controls (and other conductive parts) can

Service safety summary

For qualiﬁed service personnel only: Do not service alone:

rendering ﬁrst aid or resuscitation is present.

Use care when servicing with power on:

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:

contact with dangerous voltages and currents.

Power source:

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 unless another person capable of

Remove jewelry prior to servicing. Rings, necklaces, and other metallic objects could come into

This product is intended to operate from a power source that will not apply more than 250 volts rms

Refer also to the preceding Users Safety Summary.

Dangerous voltages may exist at several points in this product. To avoid

Contents

1 General Information

Phaser 340 overview 1-2 Solid inks 1-3 Memory considerations 1-3 Print engine assemblies 1-4 The main board 1-12 Combination sensors and their meanings 1-13

Media tray type sensing 1-13 Rear panel 1-14 Front panel 1-15 Specifications 1-16

Regulatory specifications 1-20

2 Installing the Printer and Drivers

Pre-install questions for customers 2-2 Unpacking 2-6

Inventory for printer 2-6 Setting up the printer 2-8 Cabling the printer 2-10

Connecting the printer to a Macintosh 2-10

LocalTalk connection to a Macintosh 2-10 Ethernet connection to a Macintosh 2-10

Connecting the printer to a PC 2-11

Direct connection to a PC 2-11 Networked connection to a PC using the printer’s Ethernet port 2-11

Connecting the printer to a workstation 2-11

Direct connection to a workstation 2-11

Networked connection to a workstation 2-11 Installing a SCSI hard disk drive on a Phaser 340 2-12 Connecting the optional CopyStation to the printer 2-13

Turning on the printer 2-14

Startup page 2-14 Configuration page 2-15

Service Manual

Driver and communication setup 2-21

Installing a Macintosh driver 2-21

Phaser 340 driver 2-21

Phaser 340 GX driver 2-22 Installing a printer driver for Microsoft Windows 95 2-23 Installing the Tektronix driver for Windows 3.1 2-25

If you have other Tektronix printer drivers already installed 2-25

Configuring the Tektronix Windows printer driver 2-26 Updating the standard Microsoft Windows PostScript driver 2-28 Installing the printer driver for OS/2 Version 2 2-29 Configuring the printer's serial port for a PC 2-31 Using printcap to configure a Unix workstation for the printer's serial port 2-31 Configuring a Novell NetWare server for the printer 2-32 Configuring TCP/IP 2-33

3 Verifying the Printer and Host Connections

Verifying printing from a Macintosh 3-1

Selecting the printer via the Chooser 3-1 Printing the directory from a Macintosh 3-2 Verifying that an application communicates to the printer 3-3 Using the Error Handler utility 3-3

Verifying printing from a PC 3-4

DOS connection verification 3-4 Windows 95 driver verification 3-4 Windows 3.1 driver verification 3-5 OS/2 connection verification 3-6 Novell NetWare verification 3-7

Send a print file to the printer 3-7 Using the Error Handler utility 3-8

Verifying printing from a workstation 3-9

Verifying and printing using the TCP/IP protocols 3-9 Using the Error Handler utility 3-10

Phaser 340 Color Printer

4 Key Operator Training

Printer controls and indicators 4-2 Printer rear panel connections 4-2 Loading consumables 4-3 Cleaning 4-4 Clearing paper jams 4-5 Affecting print quality 4-5 Moving the printer 4-5 Warranty information 4-6 Supplies ordering 4-6 If you need help 4-6

Customer Support Hotline 4-6 Service support 4-6 Electronic Bulletin Board Service 4-7 Using the automated fax systems 4-7 Tektronix Color Printer Information Server 4-10 Accessing the printer’s web page 4-10

5 Theory of Operation

Overview 5-1 Functional block diagram 5-2

Drum/transfix assembly 5-3 Maintenance tray 5-5 Printhead 5-7 Ink loader 5-11 Cap/wipe/purge assembly 5-12 Power supply 5-14 Main board 5-16

Print process in operation 5-18

Printhead tilt 5-18 Drum preparation 5-20 Printing 5-22 Paper pick 5-26 Transfixing, stripping and exiting 5-28

Printer self-maintenance 5-30

Printhead maintenance cycle 5-30 Paper preheater cleaning 5-33 Pick roller cleaning 5-33 Transfix roller oiling 5-34 Drum cleaning (chase page) 5-34

Service Manual

vii

6 Troubleshooting

System power-up sequence 6-1 Print engine troubleshooting 6-3

Verifying main board CPU operation 6-3 Verifying print engine operation by using its test print 6-5 Verifying power supply operation 6-5

Measuring power supply voltages 6-5 Inspecting the power supply fuses 6-8 Testing for a shorted DC supply 6-8 Testing for a shorted motor 6-9 Testing motor and solenoid resistances 6-9 Media jams and the paper path 6-10

Media-based problems 6-10

Paper-pick errors 6-10

Print transfer jams 6-11

Checking the process motor and drive train 6-11

Media skews passing through the paper path 6-12 Printing and print quality problems 6-12

Streaks or lines in the print parallel to the short axis of printing 6-12

Streaks or lines in the print parallel to the long axis of printing 6-13

Scratches in the transparency parallel to the long axis of printing 6-13

White portion of print is colored 6-13

Color is uneven 6-14

Not printing 6-14

Printing too light or too dark 6-14

Image is offset or cut off 6-14

Wrinkling 6-14

Oil streaks on top of print 6-14

Error codes and messages 6-15

viii

Phaser 340 Color Printer

PC-based diagnostics 6-27

Requirements 6-27 Starting the diagnostics 6-28

Selecting tests 6-31 Running tests 6-33 Saving and restoring test selections 6-38 Saving and restoring other settings 6-38

The diagnostic pull-down menus summary 6-39

Test Command (Alt-T) 6-39

View Menu 6-39

Run Command 6-39

Next Command 6-39

Stop Command 6-39

File Menu (Alt-F) 6-40

Options Menu 6-40

Help Menu 6-40

Problems and solutions 6-41

Power problems 6-41 Front panel indications 6-41 Macintosh printing problems 6-41 PC DOS printing problems 6-43 Windows printing problems 6-44 Workstation printing problems 6-45 Image processor hard and soft error indicators 6-45

7 Cleaning and Maintenance

Cleaning 7-2

Cleaning Page 7-3

Vacuum 7-3

Drum temperature sensor 7-3

Maintenance 7-4

Maintenance tray 7-4

Waste tray 7-4

Lubrication 7-5 Inspection 7-6

Service Manual

8 Field Replaceable Unit Disassembly/Assembly

Required tools 8-1 Lower Paper Tray Assembly 8-2 Cabinet panels and covers 8-4 Ink loader 8-6 Metal dust cover 8-8 Fans 8-9

Rear fan 8-9

Drum fan 8-10 Power supply 8-12 Vacuum system 8-14

Vacuum pump 8-14

Accumulator 8-15

Solenoid valve 8-16 Y-axis belt drive assembly 8-18 Heaters 8-20

Paper preheater 8-20

Drum heater 8-22 Drum position sensor assembly 8-24 Drum/transfix assembly 8-27 Motors 8-32

Y-axis (drum) motor and process motor 8-32

Cap/wipe/purge drive motor 8-34

X-axis drive assembly 8-36 Printhead 8-37 Cap/wipe/purge assembly 8-41 Upper and lower stripper finger assemblies 8-43 Rollers 8-44

Exit roller 8-44

Lower feed roller and feed roller magnetic clutch 8-46

Pick roller 8-47 Head tilt cam gear 8-49

Replacement 8-50

Phaser 340 Color Printer

Circuit boards 8-53

I/O board 1 8-53 I/O board 2 and I/O board 3 8-54 I/O board 4 8-55 Power control board 8-56 Interconnect board 8-58 Main board 8-60 RAM SIMM 8-61 Code ROM SIMM 8-62 Network card 8-63 Enabling TCP/IP with the authorization code 8-64

9 Checks and Adjustments

Required tools summary 9-1 Front panel menu 9-2 Bypass mode (Version 2 printers) 9-5 Cool down mode (Version 2 printers) 9-6 Printing test prints 9-6

Printing service test prints 9-6 Printing the configuration page 9-7

Adjustments 9-8

Paper-feed belt tension adjustment 9-8 Y-axis belts tension adjustment 9-9 Printhead-to-drum spacing adjustment 9-11 Cap/wipe/purge assembly belt adjustments 9-13

Drum position encoder gap 9-15 Vacuum check 9-17 Adjusting for best print quality 9-19 Resetting NVRAM 9-21

Viewing NVRAM contents 9-22

A Field Replaceable Units List

B Test Patterns

C Wiring Diagrams

Index

Service Manual

Figures

Figure 1-1 Figure 1-2 Figure 1-3 Figure 1-4 Figure 1-5 Figure 1-6 Figure 1-7 Figure 1-8 Figure 1-9 Figure 1-10 Figure 1-11 Figure 1-12

Figure 2-1 Figure 2-2 Figure 2-3 Figure 2-4

The Phaser 340 printer (shown with optional Lower Paper Tray Assembly) 1-1 Internal features of the print engine 1-4 Circuit boards of the print engine (right front view) 1-5 Circuit boards of the print engine (left-rear view) 1-6 The printer’s I Printhead maintenance system of the print engine 1-8 Left-side sensors and switches on the print engine 1-9 Right-side sensors and switches on the print engine 1-10 Solenoids on the print engine 1-11 Features of the main board 1-12 Printer rear panel with the optional Ethernet card 1-14 Printer front panel 1-15

The printer packaging 2-7 Unlocking the transit restraint lock 2-8 Connecting a SCSI hard disk drive to a Phaser 340 2-12 Connecting a CopyStation to a Phaser 340 2-13

C bus 1-7

Figure 5-1 Figure 5-2 Figure 5-3 Figure 5-4 Figure 5-5 Figure 5-6 Figure 5-7 Figure 5-8 Figure 5-9 Figure 5-10 Figure 5-11 Figure 5-12 Figure 5-13 Figure 5-14 Figure 5-15

Overview of the printer 5-2 The drum and its systems 5-3 The drum/transfix assembly 5-4 The drum maintenance cartridge 5-5 The printhead 5-7 The ink-jet array nozzle arrangement and cross-section 5-8 X-axis printhead movement during printing 5-9 The printhead tilting mechanism 5-10 The ink loader 5-11 The cap /wipe/purge assembly 5-12 The cap/wipe/purge assembly and vacuum system 5-13 Power supply block diagram 5-15 Main board block diagram 5-17 Tilting the printhead 5-19 Drum preparation for printing 5-21

xii

Phaser 340 Color Printer

Figure 5-16 Figure 5-17 Figure 5-18 Figure 5-19 Figure 5-20

Figure 6-1 Figure 6-2 Figure 6-3 Figure 6-4 Figure 6-5 Figure 6-6 Figure 6-7 Figure 6-8 Figure 6-9 Figure 6-10 Figure 6-11 Figure 6-12

Printing the latent (pre-transfer) image on the drum 5-23 Printing the latent (pre-transfer) image on the drum (later printers) 5-25 Paper picking and positioning for transfixing 5-27 Image transfixing, stripping and paper exiting 5-29 The printhead maintenance cycle 5-32

Measuring the DC voltages (test points) and fuses 6-7 Turning off AppleTalk 6-28 Configuring SoftPC’s Serial Port 6-29 PC-based diagnostics screen display 6-30 The diagnostics global help screen 6-32 The Test Suite list 6-33 The Individual test within a selected test suite 6-34 Running a test 6-35 An Individual Test help screen 6-36 Sensor Test summary 6-36 Test result of a Motor Motion test 6-37 The Thermal Test 6-37

Figure 7-1

Figure 8-1 Figure 8-2 Figure 8-3 Figure 8-4 Figure 8-5 Figure 8-6 Figure 8-7 Figure 8-8 Figure 8-9 Figure 8-10 Figure 8-11 Figure 8-12 Figure 8-13 Figure 8-14 Figure 8-15

Phaser 340 cleaning page 7-3

Removing the Lower Paper Tray Assembly 8-3 Removing the printer panels and covers 8-5 Removing the ink loader 8-7 Removing the metal dust cover 8-8 Removing the rear fan 8-9 Removing the drum fan 8-11 Removing the power supply 8-13 Removing the vacuum pump 8-14 Removing the accumulator 8-15 Removing the solenoid valve 8-17 Removing the Y-axis belt drive assembly 8-19 Removing the paper preheater 8-21 Removing the drum heater 8-23 Marking the drum-to-drum home flag sensor alignment 8-25 Removing the drum position sensor assembly 8-26

Service Manual

xiii

Figure 8-16 Figure 8-17 Figure 8-18 Figure 8-19 Figure 8-20 Figure 8-21 Figure 8-22 Figure 8-23 Figure 8-24 Figure 8-25 Figure 8-26 Figure 8-27 Figure 8-28 Figure 8-29 Figure 8-30 Figure 8-31 Figure 8-32 Figure 8-33 Figure 8-34 Figure 8-35 Figure 8-36 Figure 8-37 Figure 8-38 Figure 8-39

Removing the drum/transfix assembly (left side) 8-28 Removing the drum/transfix assembly (right side) 8-29 Removing the drum/transfix assembly (front) 8-31 Removing the process motor or the Y-axis motor 8-33 Removing the cap/wipe/purge drive motor 8-35 Removing the X-axis drive assembly 8-36 Plugging the reservoir holes 8-38 Removing the printhead 8-39 Removing the cap/wipe/purge assembly 8-42 Removing the upper and lower stripper finger assemblies 8-43 Removing the exit roller 8-45 Removing the feed roller 8-46 Removing the pick roller 8-48 Removing the cam follower pin 8-49 Removing the head tilt cam gear for removal 8-50 Adjusting the cam follower pin 8-51 Removing I/O board 1 8-53 Removing I/O board 2 and I/O board 3 8-55 Removing the power control board 8-57 Removing the interconnect board 8-59 Removing the main board 8-60 Installing the RAM SIMM on the main board 8-61 Installing the code ROM SIMM on the main board 8-62 Installing the network card in the printer 8-63

xiv

Phaser 340 Color Printer

Figure 9-1 Figure 9-2 Figure 9-3 Figure 9-4 Figure 9-5 Figure 9-6 Figure 9-7 Figure 9-8 Figure 9-9 Figure 9-10 Figure 9-11 Figure 9-12 Figure 9-13 Figure 9-14 Figure 9-15 Figure 9-16

Figure A-1 Figure A-2 Figure A-3

Main menu roadmap (printers serial-numbered B0xxxxx thru BBxxxxx) 9-2 Main menu roadmap (printers serial-numbered B0xxxxx thru BBxxxxx - continued) 9-3 Main menu roadmap (printers serial-numbered BCxxxxx and up) 9-4 Main menu roadmap (printers serial-numbered BCxxxxx and up - continued) 9-5 Setting paper-feed belt tension 9-8 Setting the Y-axis belt tension 9-10 Printhead to drum gap adjustment menu 9-11 Spacing the printhead to the drum 9-12 Aligning (timing) the cap/wipe/purge assembly drive belts 9-14 Setting the drum position encoder gap 9-16 Connecting the vacuum gauge to the printer 9-17 Selecting the vacuum check test 9-18 Printhead test menu 9-19 Printhead weak jet adjustment 9-20 NVRAM Test menu 9-21 Viewing NVRAM contents 9-22

The printer exterior FRUs A-3 The printer interior FRUs A-7 The printer interior FRUs (left side) A-9

Figure C-1 Figure C-2 Figure C-3 Figure C-4 Figure C-5 Figure C-6

Print engine wiring diagram C-1 Wire dressing around the x-axis drive C-2 Wire dressing the vacuum hose and drum fan C-2 Wire dressing behind the printhead C-3 Routing ink loader sensor wiring harness C-3 Routing wiring on the left side of the printer C-4

Service Manual

Tables

Table 1-1 Table 1-2 Table 1-3 Table 1-4 Table 1-5 Table 1-6

Table 2-1

Table 6-1 Table 6-2 Table 6-3 Table 6-4 Table 6-5 Table 6-6 Table 6-7 Table 6-8 Table 6-9 Table 6-10

Tray switch sensor combinations 1-13 Physical dimensions 1-16 Printer clearances 1-16 Functional specifications 1-17 Electrical specifications 1-18 Environmental specifications 1-19

Configuration page settings 2-15

29K processor power up self-test error codes 6-3 68K processor power up self-test error codes 6-4 Motor and solenoid resistances 6-9 Front panel and fault history log error codes and messages 6-15 Power problems 6-41 Front panel indicators and their meanings 6-41 Macintosh printing problems 6-41 PC DOS printing problems 6-43 Windows printing problems 6-44 Workstation printing problems 6-45

xvi

Phaser 340 Color Printer

Chapter

General Information

This service manual contains information useful to verify operation, troubleshoot, repair, adjust, and maintain a Tektronix Phaser™ 340 Color Printer. The ﬁrst half of this manual familiarizes you with the printer and provides information on installing and verifying the printer and training printer customers as a part of the Option S0 printer installation procedure. The latter half of the manual includes troubleshooting guides, adjustment procedures, assembly/disassembly procedures and an FRU list.

To ensure complete understanding of the product, we recommend participation in Phaser 340 service training, if available.

9100-01

Figure 1-1 The Phaser 340 printer (shown with optional Lower Paper Tray Assembly)

Service Manual

1-1

General Information

Phaser 340 overview

The Phaser 340 Color Printer is an Adobe PostScript Level 2 color, solid ink-jet printer with Tektronix color matching extensions (TekColor 3.0). The Phaser 340 is marketed in two variations: The Phaser 340 and the Phaser 340 Plus. Externally and mechanically, the Phaser 340 and Phaser 340 Plus are identical. The startup page indicates whether the printer is a “Plus” model. Additionally, the Macintosh printer driver indicates if the printer is a “Plus” model.

Note

The Phaser 340 prints at an addressability of 300 dots per inch (dpi) and features 17 built-in fonts and 8 Mbytes of RAM, which can be upgraded to 12 Mbytes. The Phaser 340 Plus prints at an addressability of 600 x 300 dots-per-inch or 300 x 300 dpi, features up to 69 built-in fonts, and comes with 24 Mbytes of RAM. The Phaser 340 Plus is also capable of job pipelining; it can print one image and process the data for the next image at the same time.

Both printers features two available paper trays: A and A4, with an optional 500-sheet high-capacity Lower Paper Tray Assembly which gives the printer a dual-tray capability. (The Lower Paper Tray Assembly is sometimes referred to as the second feeder; it only supports paper printing.) The printers print images on A- and A4-size paper and transparency ﬁlm with 5 mm (0.2 in.) margins; the bottom margin is 7 mm (0.3 in). Each can print up to a rate of four pages per minute; although the Phaser 340 Plus has greater image processing capabilities for better image throughput. Both variations feature a SCSI port to support an external SCSI disk for additional font storage and the Phaser CopyStation copier option.

Unless otherwise noted, descriptions and servicing are identical for the Phaser 340 and the Phaser 340 Plus.

Early in 1996, Tektronix introduced a signiﬁcantly redesigned Phaser 340 and Phaser 340 Plus, denoted by the serial number

xxxx and higher. These printers are often referred to as Version 2

BCx printers. Theses printer feature some new FRU components that are not compatible with older printers. These printers also have a updated front panel menu structure with new menu items.

1-2

A 68K processor oversees print engine operations; the printer’s PostScript image processor is powered by a 32-MHz 29K RISC processor. The printer features an integral bi-directional parallel port. A rear panel slot allows customers to install one “smart card” Phaser Share Network Card. One card provides an RS-232C serial port and a LocalTalk port. A second, alternative card offers an Ethernet port which includes standard support for EtherTalk and Novell NetWare. A third card provides a Token Ring interface supporting Novel NetWare, TokenTalk, and TCP/IP. TCP/IP protocol support is standard in printers serial-numbered BC01 a downloaded software key in earlier printers.

Phaser 340 Color Printer

xxx and up. TCP/IP protocol is optionally supported via

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.

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.

Memory considerations

Phaser 340.

300 x 300 dpi printing and features 1.5 Mbytes of virtual memory. With a 4 Mbyte upgrade (12 Mbytes total) the printer’s virtual memory is increased to 3 Mbytes. A 16-Mbyte RAM SIMM can be installed in the Phaser 340, but it will only recognize 4 Mbytes of the SIMM.

With a base memory conﬁguration of 8 Mbytes, the printer delivers

General Information

Phaser 340 Plus.

600 x 300 dpi, job pipeline 600-dpi images, off-load images from the host faster than a base Phaser 340, store more downloadable fonts, improve imaging performance, and increase the input memory buffer for the parallel port.

With its total of 24 Mbytes, the Phaser 340 Plus can print

Service Manual

1-3

General Information

Print engine assemblies

Cap/wipe/purge assembly

Drum

Transfix roller

Ink load assembly

Power supply

Printhead

Process motor

Y-axis motor

Paper pre-heater Drum

Figure 1-2 Internal features of the print engine

X-axis drive

X-axis motor

Maintenance tray

heater

9100-02

1-4

Phaser 340 Color Printer

I/O Board 4

General Information

Ten circuit board support the printer’s electronics. Four board, called I/O board 1 through I/O board 4 supports the front panel, solenoids and sensors. The main board contains the printer’s two CPU processors, a 29K processor which executes the PostScript image processing and a 68K processor which controls the print engine.

Front panel

Power control board

Power supply

Figure 1-3 Circuit boards of the print engine (right front view)

I/O Board 3

I/O Board 2

9100-94

Service Manual

1-5

General Information

Printhead drive board

Ethernet®

Smart Card

PHASER 340

Service

port

MODEL 4682 PXi

Parallel

SCSI Disk

DIP

AUX

Feeder

Main board

Interconnect board

Figure 1-4 Circuit boards of the print engine (left-rear view)

I/O Board 1

9100-38

1-6

Phaser 340 Color Printer

General Information

An internal data bus, called the I

C 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 dozens of sensors and actuating solenoids.

Figure 1-5 The printer’s I

C bus

I2C bus

9100-04

Service Manual

1-7

General Information

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, a vacuum accumulator, a solenoid valve and a cap/wipe/purge assembly.

Cap/wipe/purge assembly

Air valve

Ethernet®

Smart Card

PHASER 340

Service

port

MODEL 4682 PXi

Parallel

SCSI Disk

Vacuum accumulator

DIP

AUX

Feeder

Figure 1-6 Printhead maintenance system of the print engine

Air pump

9100-03

1-8

Phaser 340 Color Printer

Drum home position sensor

Drum encoder sensor

Transfix gear position sensor

Paper preheat exit sensor

Paper preheat entry sensor

Left maintenance tray sensor

General Information

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 door sensor

Ink stick out sensors

Ink stick low sensors

Front panel

Drum temperature sensor

Power control board

Front cover and handfeed sensors

Figure 1-7 Left-side sensors and switches on the print engine

9100-72

Service Manual

1-9

General Information

Caution

Stripper cover opensensor

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 to be 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.

Paper exit sensor

I/O Board 3

Main board

Printhead lock sensor

I/O Board 4

Paper width sensors

Right maintenance tray sensor

Paper-pick sensor

I/O Board 2

Figure 1-8 Right-side sensors and switches on the print engine

1-10

Phaser 340 Color Printer

Interconnect board

X-axis home sensor

Cap wipe/purge

assembly home sensor Maintenance tray blade position sensor

Paper-empty sensor

Tray type sensors

9100-73

Head tilt solenoid

Maintenance tray camshaft solenoid

General Information

Paper pick solenoid

Transfer cam solenoid

Figure 1-9 Solenoids on the print engine

Air valve

9100-05

Service Manual

1-11

General Information

The main board

The main board features two processors: one processor controls the functions of the print engine and the other provides PostScript image processing. Prominent on the main board is the ROM code SIMM and the RAM SIMM plug-in modules. Network connection is provided through the plug-in network card. The printer stores unique printer status and PostScript values in its NVRAM module. The printer’s IP address, unique to each printer, is stored in a socketed ROM IC.

NV RAM

Print engine ROM

RAM SIMM

Figure 1-10 Features of the main board

PostScript ROM

Printer ID ROM

Network card

9100-06

1-12

Phaser 340 Color Printer

Combination sensors and their meanings

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

Media tray type sensing

The combinations of the three tray sensors “tell” the print engine what type of standard 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.) The tray sensors are located on the right-side interior of the paper tray slot, mounted on I/O board 2. There are four tray types:

■

Letter (A-size). This tray is sized for 8.5 x 11-inch (Olympic) paper.

Metric Letter (A4-size). This tray is used for 210 x 297 mm (Metric)

■

paper.

Transparency (A). This tray supports Olympic-size transparency ﬁlm.

■

General Information

■

Transparency (A4). This tray supports Metric-size transparency

ﬁlm.

Table 1-1 Tray switch sensor combinations

Tray type Top switch Middle switch Bottom switc h

A Paper A4 Paper A Transparency A4 Transparency Closed Open Closed Open Open Closed Open Closed Open Open Closed Closed

Service Manual

1-13

General Information

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)

■

SCSI high-density connector (font hard disk drive only)

With the addition of a Phaser Share network card, the printer can feature either of these connector combinations:

RS-232 serial and LocalTalk connectors

■

ThinNet (10base2) and Twisted Pair (10baseT) Ethernet connectors

29K processor health light

Health LEDs

Two health LEDs indicate the status of the printer’s two CPU processors (a 29K and a 68K processor).

Blinking : The printer is operating normally. Both LEDs blink

■

irregularly during diagnostics.

If a soft error occurs, the image processor’s 29K operates, but in a reduced capacity. Soft failures include failure of expansion memory SIMMs or any of the interface ports. When a soft error occurs, the printer automatically prints a startup page listing the error.

■

or 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 Chapter 6 topic “Verifying main board CPU operation” on page 6-3 for the meaning of a coded indication.

The following ﬁgure illustrates the rear panel of the printer.

68K processor health light

Ethernet®

PHASER 340

Service

port

Figure 1-11 Printer rear panel with the optional Ethernet card

1-14

Phaser 340 Color Printer

SCSI Disk

Parallel

1

Service2Reset

DIP

AUX

Feeder

9100-07

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