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EK-MLN03-MG-002

May 1986

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Document:	LN03 Series Maintenance Kit Guide
Order Number:	EK-MLN03-MG
Revision:	002
Pages:	32
Original Filename:

OCR Text

EK-MLNO3-MG-002

LNO3 Series
Maintenance Kit Guide

Prepared by Educational Services
of
Digital Equipment Corporation

1st Edition, May 1986
2nd Edition, August 1986
Copyright © 1986 by Digital Equipment Corporation.
All Rights Reserved.

Printed in Japan.
The reproduction of this material, in part or whole, is strictly prohibited.

For copy information contact the Educational Services Department,
Digital Equipment Corporation, Maynard, Massachusetts 01754.
The information in this document is subject to change without notice.

Digital Equipment Corporation assumes no responsibility for any errors

that may appear in this document.

The following are trademarks of Digital Equipment Corporation, Maynard,

Massachusetts 01754.

DEC

DECdirect

DECmate

DECnet

DECsystem-10

DECSYSTEM-20

DECwriter

DIBOL

PDP

P/OS

UNIBUS

Professional

VAX

RSTS

Rainbow

RSX

VMS

Work Processor

CONTENTS

(€= 4 1= - |

Performing Printer Maintenance ...............
...
ittt

Replacingthe
OPC Cartridge .........ccoiiiiiiiiiiiiiiiiiinnnnn.

Replacingthe ShieldGlass.............coiiiiiiiiiiiiiiiiniiiennnn.

Replacing the Charge Corona Unit ......... ...t 10
Replacing
the TransferCorona Unit ..................
. ...
12

Cleaningthe QuenchinglLamp .........cciiiiiiiiiiiiiiiiiiinnnnnn. 16

Cleaning the Separatien Pawls ...t
e
e 19
Replacingthe Ozone Filter ...........co i 24

General MaintenanCe ......c.coiiiiiiiiinit
it iiii it 28

USING THE LNO3
MAINTENANCE KIT

GENERAL

This guide contains the procedures necessary to perform routine
printer maintenance for the LNO3. These procedures are written

sequentially and should be followed from beginning to end. Also
contained in this guide are suggestions to keep your prmter in top

operating condition and problem free.

Before you begin, check to see that you have all of the items shown
below.
CAUTION:

Do not remove the OPC cartridge from its black bag until

you are ready to install it. The cartridge is subject to degradation if

exposed to Ii’gh_t for more than five (5) minutes.

If any items are misSing or damfaged, contact your Sales Representative
and Delivery Agent, or your DECdirect Customer Service Representative.

BOX

OPC
CARTRIDGE

- 'k.t.

SHIELD

GLASS
OZONE
FILTER

- FOR
LNO3A

OZONE
FILTER
FOR
LNO3

SHIELD

GLASS

CORONA

UNITS
(IDENTICAL)

PERFORMING PRINTER MAINTENANCE
Routine printer maintenance should always be performed when the

“Maintenance” indicator lights on the indicator panel. If printing
continues after the indicator comes on, the quality of print may

deteriorate rapidly.

REPLACING THE OPC (Organic Photo Conductor) CARTRIDGE

1. Power off printer.

2. Pull development drawer'éut firmly, letting it slide in the guide
tracks on the paper tray cover until it stops.

CAUTION: Do not cpea th‘develapment'drawer without the paper

tray installed. The paper tray supports the development drawer and
prevents it from falling out of the printer.
|

DEVELOPMENT

DRAWER\

GUIDE TRACKS
MA-1301-84A

3. Grésp the green handl es on each side of the OPC cartridge and lift
it up and out.

' GREEN HANDLE

MA-1301-84R

Unpack new OPC cartridge from its black bag and plastic case.

'BLACK BAG

_=s\

PLASTIC CASE

MA-1310A-84

Remove anddiscardthe green spacers from the rear guide pinson
the cartridge.

Remove the protective paper over the belt by grasping the tape
and pulling it down in the direction of the arrow.

CAUTION:

Do not touch the photo conductive surface of the belt.

Finger prints will damage the belt.

OPC CARTRIDGE

PLASTIC CASE
MA-1311-84

Insert new OPC cartridge so the front guide pins on each side slip
into their anchoring slots in the development drawer.

Close development drawer.

ANCHORING SLOT

GUIDE PIN
MA-1301-848

REPLACING THE SHIELD GLASS

1. Open left side covek.
2.

Remove shield glass by pulling it out.

LEFTSIDECOVER

Serd

MA-1302-84C

Insert new shield glass (arrow side up) until it is firmly seated in
position.

NOTE:

The kit has two different shield glasses. Be sure to use the
shield glass that is identical to the one removed. The shield glass for the

LNO3A model (indicated on the rear panel) has a curvature
in the glass
and no green border. Discard the shield glass that is not used.

CAUTION:

Do nottouch glass Fmgerprmts will smudge the glass and

it cannot be cleaned

Leave the left side cover epefi and replace the charge corona unit.

MA-1302-84D

REPLACING THE CHARGE CORONA UNIT
NOTE:

The charge and transfer corona units are identical and are

interchangeable.

Remove charge corona unit by pulling it out by its tab.

~CHARGE

corona uniT

MA.-1302-84E

Insert new charge corona unit (alignment guide up) until itis firmly
seated in position.

CAUTION:

Do nottouchcoronawire. The wire has a protective coating

and cannot be cleaned if contaminated.

Leave the left side cover open and replace the transfer ccrena'unit.

ALIGNMENT GUIDE

MA-1302-84F

REPLACING THE TRANSFER CORONA UNIT
NOTE:

The charge and transfer corona umts are ldent:cal and are

interchangeable.
1.

Remove toner collection bott!e by gently pushmg it dcwn and then
lifting it out at a slight angle.

NOTE.? Do not discard the toner collection bottle. It will be reinserted
after the corona unit is replaced.

MA-1302-84G

Remove transfer corona unit by pulling it out by its tab.

TRANSFER CORO

NA UNIT

TAB

MA-1302-84H

Insert the new corona unit (alignment guide down) until it is firmly
seated in position.

CAUTION:

Do nottouchcoronawire. The wire has a protective coating

and cannot be cleaned if contaminated.

MA-1302-84J

4. Replace toner collection bottle.
‘Leave the left side cover open and clean the quenching lamp.

MA-1302-84M

CLEANING THE QUENCHING LAMP
1.

Remove quenching lamp by pulling it straight out.

)

;

QUENCHING LAMP

MA-1302-84K

Cleanthe clear quenchinglamp cover by wiping with a damp cloth.

CAUTION: Do not use any type of cleaning fluid to clean the
quenching lamp. To prevent possible damage, use only waterto dampen
the cloth.

" CLEAR COVER

MA-1312-84

Insert quenching lamp (clear cover down) until it is firmly seatedin
position.

4. Close left side cever; -

MA-1302-8B41.

CLEANING THE SEPARATION PAWLS
WARNING: The fusing unit is HOT. To prevent personal injury, the
printer should remain off for 40 minutes until completely cool before
removing the separation pawls.

1. Open paper exit cover by lifting its release lever.

PAPER EXIT COVER

RELEASE

MA-1301-84H

Remove each separation pawl by pressing it toward the front of the
printer and lifting out.

SEPARATION
~PAWL

MA-1301-847

Clean the pawls by wiping with a soft damp cloth.

CAUTION: Do not use any type of cleaning fluid to clean the

separation pawls. To prevent pcss:ble damage use only water to
dampen the cloth.

DAMP CLOTH

MA-1313-84

4. Replace each separation pawl by.inserting it so the wide edge of
pawl is toward front of printer.

§ SEPARATION

MA-1301-84U

Close paper exit cover.

PAPER EXIT COVER

. MA-1301-84V

REPLACING THE OZONE FILTER
NOTE:

Thekithastwodifferentozone filters. Usethe filterthat fits your

machine. Discard the one that is not used.
WARNING:

Theozonefiltermustbereplacedevery 10,000 printed pages.

Do notoperate the printer without the filterin place or with a damaged filter.
The filter removes ozone, generated by the printer,

which could be

hazardous to your health.

1. Ifthefilteris mount ic‘a therearofthe printer,squeeze thetabson
each side and pull the filter out.

MA-1305-84A

Insert the new ozone filter by pushing it in until
it ‘snaps into

place.

3. If the filter is mounted on the side of the printer, pull out the filter
holder and remove the filter.

MA-0264-86

- 5.

Insert the new filter in the holder.

Mount the holder by inserting the tab through the opening in the

~ cover and pushing in the holder until the magnet secures the holderin
Saaniieren
|
place.

FILTER

. HOLDER_

MA.-0263-86

GENERAL MAINTENANCE

Very little general maintenance is required to keep the LNO3 in top
operating condition if the routine printer maintenance is perfsrmed
when required.

At intervals of approximately 3,000 pages when toner is added,
perform the following procedures to maintain peak performance from
the printer.

® Clean the external surfaces with a soft, damp cloth.
CAUTION: Do not use any type of cleaning fluid to clean the surface
of the printer. To prevent poss:ble damage, use enly water to dampen
the cloth.

o Vacuum‘; stray toner, paper, etc, from the feed, exit, and fusing
areas of the printer.