Apple LaserWriter Pro 810 Service Source.pdf

LaserWriter Pro 810

Service Technical Documentation

Table of Contents

Section 1. Introduction

Section 2. Setup Menu

Section 3. Preventive Maintenance

Section 4. Take Apart

Section 5. Troubleshooting

Section 6. Interface Configurations

Appendix A. Memory Expansion Upgrade

Appendix B. Illustrated Parts List

express permission of Apple Computer, Inc.

The material in this document is for informational purposes and is subject to

change without notice Apple Computer, Inc. assumes no responsibility for errors

or omissions in this document. Nor is any liability assumed for any damages

resulting from the use of the information it contains.

TRADEMARK ACKNOWLEDGEMENTS

HP Laserjet Series IIP is a trademark of Hewlett Packard, Inc.

PostScript is a registered trademark of Adobe System Incorporated.

Apple and LaserWriter are a registered trademarks of Apple Computer, Inc.

Macintosh is a trademark licensed to Apple Computer, Inc.

First Edition June 1993

WARNING

FCC Regulations state that any unauthorized changes or modifications to the

equipment not expressly approved by the manufacturer could void the user's

authority to operate this equipment.

NOTE

This equipment has been tested and found to comply with the limits for a Class A

digital device pursuant to Part 15 of FCC Rules. These limits are designed to

provide reasonable protection against harmful interference in a residential

installation. This equipment generates, uses, and can radiate radio frequency

energy and, if not installed and used in accordance with the instructions, may

cause interference to radio communications. However, there is no guarantee that

interference will not occur in a particular installation.

If this equipment does cause harmful interference to radio or television

reception, which can be determined by turning the equipment off and on, the user

is encouraged to try to correct the interference by one or more of the following

measures:

• Reorient the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to

which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

NOTE

In order to maintain compliance with FCC regulations, shielded data cables must

be used with this equipment.

BESCHEINIGUNG DES HERSTELLERS/IMPORTEURS

Hiermit wird bescheinigt, daß der Laser Drucker Typ LaserWriter Pro 810 in

Übereinstimmung mit den Bestimmungen der Vfg. 1046/1984 funk-entstört ist.

Der Deutchen Bundespost wurde das Inverkehrbringen dieses Gerätes angezeigt

und die Berechtigung zur Überprüfung der Serie auf Einhaltung der Bestimmungen

eingeräumt.

Apple Computer, Inc.

CERTIFICATE OF MANUFACTURER/IMPORTER

This is to certify that the Laser Printer Model LaserWriter Pro 810 is shielded

against radio interference with the provisions of Vfg. 1046/1984.

The German Postal services have been advised that this device is being put on the

market and are entitled to inspect the series for compliance with the regulations.

Apple Computer, Inc.

USER SAFETY

The Printer is certified as a Class 1 laser product under the U. S. Department of

Health and Human Services (DHHS) Radiation Performance Standard according to

the Radiation Control for Health and Safety Act of 1968. The product is safe to

use during normal operation and maintenance.

Protective housing and external covers completely confine the laser light emitted

inside the printer. The laser beam cannot escape from the machine during any

phase of normal user operation.

CAUTION

Performance of procedures other than those specified in this manual could result

in hazardous radiation exposure.

Regulations implemented on August 2, 1976, by the Center for Devices and

Radiological Health (CDRH) of the U. S. Food and Drug Administration (FDA) apply

to laser products manufactured from August 1, 1976. Laser products sold in the

United States must comply with these regulations.

This digital apparatus does not exceed the Class A limits for radio noise

emissions from digital apparatus set out in the Radio Interference Regulations of

the Canadian Department of Communications.

Le present appareil numerique n'emet pas de bruits redioelectriques depassant les

limites applicables aux appareils numeriques de la class A prescrites dans le

Reglement sur le brouillage radioelectrique edicte par le ministetre des

Communications du Canada.

LITHIUM BATTERY INFORMATION

CAUTION

Danger of explosion if battery is incorrectly replaced. Replace only with the same

or equivalent type recommended by the manufacturer. Dispose of used batteries

according to the manufacturer's instructions.

A "dead" lithium battery is considered hazardous waste and has some potential

for explosion if improperly handled. Mark the battery "Dead". Place it in a zip-

lock wrapper and the packaging used to ship the replacement battery, and return

the dead battery to Apple, where it will be disposed of following EPA guidelines.

Exception: If the battery is physically damaged, do not return it to Apple. Dispose

of the battery locally according to local ordinances.

(Instructions for replacing the battery are given in this manual.)

CAUTION

Invisible laser radiation when open and interlocks defeated. Avoid exposure to

laser beam.

LaserWriter Pro 810

Section 1: Introduction

Name of this file on disk:

Introduction•PP

LaserWriter Pro 810

Nov 93

Introduction/1-2

GENERAL

The printer consists of two major blocks—the controller and the print

engine. The controller functions as the interpreter of the source print data

and creates dot pattern information. The print engine prints the data based

upon the dot pattern information it receives from the controller.

The print engine includes the Laser Scanner Unit (laser/optical unit), EP

cartridge (developer, drum, toner, main charger), and paper feed

mechanisms. The print engine mechanisms are controlled by the DC

Controller.

This section of the manual describes the overall print process, Laser

Scanner Unit functions, and DC Controller functions. Locations of other

major parts and assemblies are provided as well as a brief description of

their functions.

NOTE: Many of the drawings in this manual show a two-tray model of the

LaserWriter Pro laser printer. All pictures of the two-tray model used in

this manual accurately represent the three-tray LaserWriter 810.

Apple Computer does not include a two-tray printer in the LaserWriter

810 product offering. If this manual is revised in the future the graphics

will be changed to reflect the three-tray configuration.

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