Digital Equipment LA600 MultiPrinter Manuel utilisateur

LA600 MultiPrinter

Field Service Manual

Order No.: ER-LA600-SV

The information in this document is subject to change without notice and should not be construed as

a commitment by Digital Equipment Corporation. Digital Equipment Corporation assumes no

responsibility for any errors that may appear in this document.

All rights strictly reserved. Reproduction or issue to third parties in any form is not permitted without

written authorization from the publisher.

Pub. No. 5112 991 12932

November 1994

LA600 Field Service Manual

Table of Contents

1. Safety Precautions ..................................... 1-1

2. Preventive Actions for Keeping the Printer Running ........... 2-1

3. Procedures for Removal and Reassembly ................... 3-1

Housing ............................................. 3-2

Printer Engine LA600 .................................... 3-4

PSU-40A Assy ........................................ 3-6

DEV-40 LA600 Assy .................................... 3-8

CU-40 LA600 Assy .................................... 3-10

EEPROM CU-40-00 .................................... 3-12

Operator Panel ....................................... 3-14

Power ON/OFF Switch Assy .............................. 3-16

Cable Print Head Assy .................................. 3-18

Encoder Strip Assy .................................... 3-20

Kit Lubrication Felt ..................................... 3-22

Print Head H-Encoder 40A ............................... 3-24

Horizontal Motor 40A ................................... 3-26

Carriage 40A Assy ..................................... 3-28

Protection Shield ...................................... 3-30

Ribbon Gear Assy ..................................... 3-32

Rep. Kit Ribbon Gear ................................... 3-34

Stepping Motor 7.5 DEG (Platen gap control) ................. 3-36

Stepping Motor 1.8 DEG (Vertical paper transport) ............. 3-38

Tractor Gear 40A ...................................... 3-40

Stacker Elements 40B Assy .............................. 3-42

Print Head LA600 ..................................... 3-44

Paper Run/In Detector Assy .............................. 3-48

Kit Pressure Roll FF1 ................................... 3-50

Kit Vertical Transport A40 ............................... 3-52

Minipitch Belt Stepper .................................. 3-52

Minipitch Belt Form Feed ................................ 3-52

Kit Belt Pulley 40A ..................................... 3-54

Kit Cont. Forms Exit 40A ................................ 3-56

Kit Tractor 40A ....................................... 3-58

Kit Belt Tension 40A ................................... 3-60

Kit ASF Levers ....................................... 3-62

Kit Torsion Spring D-Axis ................................ 3-64

Kit Screws and Springs ................................. 3-66

Digital Equipment Corporation Page 0-1

LA600 Field Service Manual

4. Wearing Parts ........................................ 4-1

Platen Assy A1 ........................................ 4-2

ASF Pick-up Rollers ..................................... 4-6

5. List of Spares and Repairs .............................. 5-1

Page 0-2 Digital Equipment Corporation

LA600 Field Service Manual

1. Safety Precautions

1. Some of the maintenance procedures described in this section

require that the printers top housing is removed. This exposes

the internal working parts of the printer. During operating some

of these parts are potentially dangerous.

2. All replacement and cleaning procedures should be performed

with the printer switched OFF and the mains connector

disconnected.

3. Only recommended parts should be used to replace defective

parts. Details of field exchangeable parts, including part number

and service number are listed in Chapter 5 ’Spares and Repairs’.

4. Switch the printer OFF while connecting or disconnecting a

Personality Module, a Memory Card or a Colour Option.

5. Never print over the edges of paper or beyond the perforations of

fanfold paper, otherwise the print head can be damaged.

6. Never attempt to print with no paper loaded or no ink ribbon

installed in the printer

7. Put the printer in the STOP mode immediately a paper jam

occurs, using the START/STOP key at the Operator Panel.

Digital Equipment Corporation Page 1-1 Page 1-2 Digital Equipment Corporation

LA600 Field Service Manual

2. Preventive Actions for Keeping the Printer Running

The following points should be additionally checked on a service call.

Item Problem Remedial Action

Platen *) Paper feeding problems Remove platen and clean

surface thoroughly using

platen cleaner S/CP 09.

Paper input transport

rollers Paper feeding problems Disconnect mains cable,

remove the ribbon, and

remove housing (see

chapter 3, Part: Housing).

Also remove the paper guide

secured with two green

screws. Clean all transport

rollers using platen cleaner

S/CP 09.

ASF *) Paper insertion problems Remove ASF cassette.

Clean pick-up rollers using

platen cleaner S/CP 09, and

check the paper handling of

the ASF cassette using a

few sheets of paper which

have to be transported

properly by manually rotating

the pick-up wheel of the

ASF-cassette.

*) Refer to Chapter 4 to check a necessary exchange of platen or pick-up rollers.

Digital Equipment Corporation Page 2-1 Page 2-2 Digital Equipment Corporation

LA600 Field Service Manual

3. Procedures for Removal and Reassembly

This chapter describes the removal procedures which are necessary for proper

handling of the spare parts and subunits of the printer.

Note:

All removal procedures consists of several steps indicated with a:

to show preparation and

⇒to indicate the main removal steps.

Digital Equipment Corporation Page 3-1

LA600 Field Service Manual

Part: Housing DEC P/N: FD-W03RF-01

Part No: 5112 292 38200

REMOVAL

Disconnect mains cable

Remove the manual front insertion (A)

⇒Remove the front cover (B) resp. the ASF cassette(s) out of the

mounting slots (C)

⇒Swing cover (D) to its nearly upright position and remove it

⇒a) Remove the cover (E) by releasing the cover snap locks

(F) with a flat bladed screwdriver

b) To remove the cover (E) grasp it by the sides, raise the

front slightly, push the cover back until the metal snaps

are out of the slots at the rear of the printer and then lift

the cover

REASSEMBLING

Execute the REMOVAL procedure in reverse sequence

Page 3-2 Digital Equipment Corporation

LA600 Field Service Manual

Digital Equipment Corporation Page 3-3

LA600 Field Service Manual

Part: Printer Engine LA600 DEC P/N: 29 31790-01.A01

Part No: 5112 292 62901

REMOVAL

Set the printer into "LOCAL MODE"

Disconnect the system interface cable

Remove the ribbon cartridge

Switch the printer off and disconnect the mains cable

⇒Remove all encasing parts

⇒Remove the personality module (A)

⇒Remove the plastic insert of the memory card

interface (B)

⇒Loosen screw (C)

⇒Remove screws (D)

⇒Disconnect the Device Electronic (E)

⇒Disconnect the Control Unit (F)

⇒Loosen the fixation screws of the power on

switch and remove it (G)

⇒Swivel the printer as shown in figure 2.

Note:

For protection of the operator panel please use a part of the

packaging material of the new printer engine as support.

⇒Shift the entire Electronic Subassembly

to the left. (1)

⇒Swivel it in the direction towards you

and remove it from the printer

engine. (2)

REASSEMBLING

Unpack the new printer engine

Execute the REMOVAL procedure with the new printer engine in reverse

direction.

⇒Change the print head from the "old" printer engine into the "new"

one.

⇒Perform an AGC Adjust procedure

⇒Adjust the parameter "Paper In Adj." to the value indicated on

the field service instruction attached to the new printer engine.

⇒Perform "PRINT TEST 3" and check for proper operation of

the printer.

Note:

Take a note of the value of the page counter (PGCNT) on the

FRU-label of the new printer engine.

Page 3-4 Digital Equipment Corporation

LA600 Field Service Manual

Figure 1

Figure 2 Value of PAPER-IN ADJ.:

Digital Equipment Corporation Page 3-5

LA600 Field Service Manual

Part: PSU-40A Assy DEC P/N: FD-W02BY-01

Part No: 5112 292 38110

REMOVAL

Disconnect mains cable

Remove all encasing parts (see Part: Housing)

Loosen the two screws (A) securing the PSU-40A assy

⇒Lift the complete Power Supply Unit (PSU), using a screwdriver

⇒Disconnect plug (C)

⇒Remove clamp (D) and disconnect plug (B)

REASSEMBLING

Execute the REMOVAL procedure in reverse sequence

ATTENTION:

Do not touch the PSU board within min. 2 minutes after power OFF

Before exchanging the PSU, please check the fuse (F)

Page 3-6 Digital Equipment Corporation

LA600 Field Service Manual

Digital Equipment Corporation Page 3-7

LA600 Field Service Manual

Part: DEV-40 LA600 Assy DEC P/N: 29-31791-01 A01

Part No: 5112 292 62921

REMOVAL

Disconnect mains cable

Remove all encasing parts (see Part: Housing)

⇒Loosen the two screws (A) and remove screw (B)

⇒Remove the DEV-40 LA600 Assy

a) while removing, DEV-40 LA600 assy (K) is automatically

disconnected from CU-40 LA600 assy (C)

b) disconnect all plug connections from the DEV-board:

- plug (D)

- plug (E)

- plug (F)

Reassembly

Execute the REMOVAL procedure in reverse sequence

Attention: Wire (L) has to be fastened by screw (B) as shown in Detail Z

Page 3-8 Digital Equipment Corporation

LA600 Field Service Manual

Digital Equipment Corporation Page 3-9

LA600 Field Service Manual

Part: CU-40 LA600 Assy DEC P/N: 29-31792-01. A01

Part No: 5112 292 62991

REMOVAL

Disconnect mains cable

Remove all encasing parts (see Part: Housing)

Remove DEV-40 LA600 Assy (see Part: DEV-40 LA600 Assy)

⇒Remove if plugged in memory card (A)

⇒Remove the Personality Module after loosing the two

lockscrews (B)

⇒Disconnect plug (C) from CU-40 LA600 Assy and

remove CU-40 LA600 Assy

⇒Remove the EEPROM CU-40-00 (D) and plug it

into the new CU-40 LA600 assy.

Note: Pay attention, that EEPROM (D) is stuffed correct

position (pin marker (E))

Reassembly

Execute the REMOVAL procedure in reverse sequence

Note: Start the function ’Print Out’ and check ’Current Settings’

Page 3-10 Digital Equipment Corporation

LA600 Field Service Manual

Digital Equipment Corporation Page 3-11

LA600 Field Service Manual

Part: EEPROM CU-40-00 DEC P/N: 29-31802-01. A01

Part No: 5112 208 07590

REMOVAL

Disconnect mains cable

Remove all encasing parts (see Part: Housing)

Remove DEV-40 LA600 Assy (see Part: DEV-40 LA600 Assy)

Remove CU-40 LA600 Assy (see Part: CU-40 LA600 Assy)

⇒Exchange the EEPROM CU-40-00 (D)

Note:

Pay attention, that EEPROM (D) is stuffed correctly

position (pin marker (E))

Reassembly

Execute the REMOVAL procedure in reverse sequence

Note:

Start the function ’Print Out’ and check ’Current Settings’

Page 3-12 Digital Equipment Corporation

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