Monitors and Mass Storage Service Guide

Monitors and Mass Storage

Service Guide

October 1992

No portion of this document may be produced in any form without the written permission of Apple Computer, Inc.

©1992 Apple Computer, Inc. Apple, the Apple logo, AppleCD SC, A/UX, Mac, and Macintosh are trademarks of Apple Computer, Inc., registered in the U.S. and other countries. AppleCD, AppleColor, Apple Desktop Bus, Apple SuperDrive, Apple TechStep, Disk First Aid, Macintosh Duo, Macintosh Quadra, PowerBook, PowerBook Duo, Performa, and QuickDraw are trademarks of Apple Computer, Inc. Classic is a registered trademark licensed to Apple Computer, Inc.

MS-DOS is a registered trademark of Microsoft Corporation. OS/2 is a registered trademark of IBM Corporation. NuBus is a trademark of Texas Instruments. Styrofoam is a registered trademark of Dow Chemical Corporation.

Table of Contents

Introduction
Organization.....v
How to Use This Guide.....vi
General Monitor Information
Safety Information.....2
Ten Rules to CRT Safety.....2
Discharging the CRT.....3
Disposing of the CRT.....4
ESD Prevention.....6
ESD Prevention Rules.....6
Setting Up an ESD-Safe Workstation.....7
Environmental Display Distortions.....8
Monitor Distortion.....8
Environmental Influences.....9
Diagnostics.....10
Video Cables.....11
Monochrome Monitors
Apple High-Res Monochrome Monitor
Illustrated Parts List.....16
Troubleshooting.....19
Safety Instructions.....21
Adjustments.....22
Geometric Adjustments.....22
Video Adjustments.....23
Macintosh 12-Inch Monochrome Display
Illustrated Parts List.....26
Troubleshooting.....28
Safety Instructions.....30
Adjustments.....31
Geometric Adjustments.....31
Video Adjustments.....32
Apple Macintosh Portrait Display
Illustrated Parts List.....34
Troubleshooting.....36
Safety Instructions.....38
Adjustments.....39
Geometric Adjustments.....39
Video Adjustments.....42
Magnet Adjustment.....44

Apple Macintosh Portrait Display "Series B"
Illustrated Parts List .....48
Troubleshooting .....50
Safety Instructions .....52
Adjustments .....53
Geometric Adjustments .....53
Video Adjustments .....56
Apple Two-Page Monochrome Monitor
Illustrated Parts List .....60
Troubleshooting .....62
Safety Instructions .....64
Adjustments .....65
Geometric Adjustments .....65
Cutoff/Video Adjustments .....69
Focus Adjustment .....71
Color Monitors
Macintosh 12-Inch RGB Display
Illustrated Parts List .....76
Troubleshooting .....78
Safety Instructions .....81
Adjustments .....82
Geometric Adjustment .....82
Screen Adjustment .....85
White Balance Adjustment .....89
AppleColor High-Res RGB Monitor
Illustrated Parts List .....94
Troubleshooting .....97
Safety Instructions .....100
Adjustments .....101
Geometric Adjustments .....101
Video Adjustments .....102
Geometric Distortion Adjustment .....107
Macintosh Color Display
Illustrated Parts List .....112
Troubleshooting .....114
Safety Instructions .....117
Adjustments .....118
Geometric Adjustments .....118
Video Adjustments .....120
Yoke Adjustment .....123

Apple Performa Display and Performa Display Plus Illustrated Parts List ..... 126
Adjustments ..... 127
User Adjustments ..... 127
Geometric Adjustments ..... 127
Macintosh 16-Inch Color Display Illustrated Parts List ..... 130
Troubleshooting ..... 133
Safety Instructions ..... 136
Adjustments ..... 137
Geometric Adjustments ..... 137
Video Adjustments ..... 140
Macintosh 21-Inch Color Display Illustrated Parts List ..... 146
Troubleshooting ..... 149
Symptom/Cure Chart ..... 149
Using Troubleshooting LEDs ..... 152
Safety Instructions ..... 155
Adjustments ..... 156
Geometric Alignment and Convergence Charts ..... 156
Geometric Adjustments ..... 158
Video Adjustments ..... 172
Macintosh Video Cards Illustrated Parts List ..... 178
Card Compatibility and Video Output Table ..... 182
Troubleshooting ..... 183
Video Upgrades ..... 184
General SCSI Information Illustrated Parts List ..... 188
SCSI Requirements ..... 190
A Brief Overview of SCSI ..... 190
Quick Reference Information ..... 191
Terminating the SCSI Chain ..... 193
Troubleshooting ..... 194
Troubleshooting Checklist ..... 194
Most Common SCSI Chain Problems ..... 195
ESD Prevention ..... 196

Hard Drives

Illustrated Parts List ..... 198
Carrier Compatibility Tables ..... 202
Return Configuration Tables ..... 205
Troubleshooting ..... 208
Troubleshooting Checklist ..... 208
MacTest Pro ..... 208
Additional Procedures ..... 210
SCSI Select Jumper Configurations ..... 210
Termination Resistors and Jumpers ..... 211
Macintosh Hard Disk 40SC/80SC Upgrade ..... 212
Hard Drive Startup Problem ..... 214

Floppy Drives
Illustrated Parts List ..... 216
Identification ..... 220
Media and Drive Compatibility ..... 221
Internal Cable and Carrier Compatibility ..... 222
Troubleshooting ..... 223
Troubleshooting Checklist ..... 223
Symptom/Cure Chart ..... 223
Additional Procedures ..... 225
Cleaning Floppy Drives ..... 225
Avoiding Disk Ejection Problems ..... 226
Removing Disks That Will Not Eject ..... 226
Macintosh SE SuperDrive Upgrade ..... 228
Macintosh II SuperDrive Upgrade ..... 229

CD-ROM Drives
Illustrated Parts List ..... 232
Troubleshooting ..... 234
Troubleshooting Checklist ..... 234
Symptom/Cure Chart ..... 234
MacTest Pro ..... 235
Disconnecting the AppleCD SC Fan ..... 236

The Monitors and Mass Storage Apple Service Guide is the fourth in a series of supplemental booklets that help Apple-certified technicians troubleshoot and repair Apple products at customers' sites. The Apple Service Guide series contains information condensed from a number of Apple Service products and sources; it includes only need-to-know information for the experienced technician. These guides do NOT replace the Apple Service Source CD.