Macintosh II repair and upgrade secrets

283 Pages·1991·44.894 MB·English

by  Pina, Larry

Macintosh II Repair
and Upgrade Secrets
Larry Pina
-ll~ady Publishing
New York Londou Toromo Sydney Tokyo Singapore
Copyright© 1991 by Larry Pina
All rights reserved,
including the right of reproduction
in whole or in part in any form.
Br·ady Publishing
Brady Publishing
A division of Simon & Schuster, Lnc.
15 Columbus Circle
New York, NY 1 0023
Manufactured in the United Stntes of America
10 9 8 7 6 54 3 2 1
Librnr-y of Con1,rrcss Cululoging in Publicalion Dalu
Pina, Larry.
Macintosh II repair and upgrade secrets I Larry Pina.
p. em
Jncludcs index.
1. l'vlacintosh ll (Cornputer)-\1aintenance and repair.
2. Microcornpu[Crs-Upgruding l. Title II. Title: Macintosh 2
repair and upgrade secrets.
TK7889.M33P55 1991
621.39'16-dc20 91-37576
CIP
ISBN 0-13-929530-5
Trademarks
All terms mentioned in this book that aye known to be trademarks or
service marks are listed below, In addition, terms suspected of being
trademarks or service marks have been appropriately capitalized. Brady
cannot attest to the accuracy of this informa6on. Use of a term in this
book should not be regarded as affecting the validity of any trademark
or service mark.
Apple, lmagc\Vriter,. Laser\Vriter, Lisa, Mac, and Macintosh arc registered
trademru·ks of Apple Computer, Inc.
AppleTalk, HrperCard, and Finder arc trademarks of Apple Computer, Inc.
Key Tronic and Key Tronic Professional Series arc registered trademarks of
Key Tronic Corporation .
.\lacCru·d is a o·ademark of Systems Control, a division of M.J. Electric .
.\>!acTable is n registered trademark of Sea nCo.
\1acPro is u trademark of Key Tronic Corporation.
~·licrosoft and :VIS-DOS arc registered trademarks of ~1icrosoft Corporation.
Polaroid is a registered t radcmark of Polaroid Corporation.
PowerKey is a trademark of Sophisticated Circuits Incorporated.
Hadio Shack is a registered trademark of Tandy Corporation.
Sony, MultiScan, and Trinitron are registered trademarks of Sony.
Limits of Liability and
Disclaimer of Warranty
The aud1or and publisher of this book have used their best efforts in preparing
this book a11d the programs contained in it. These efforts include the develop
ment, research, nnci testing oft he theories and programs to determine their effec
tiveness. The autlwr and publisher make no warranty of any kind, expressed or
implied, with regard to these programs or the documentation contained in this
book. The author and publisher shall not be liable in any event for incidental or
consequential damages in connection with, or arising out of, lite furnishing,
performance, or use of these programs.
Acknowledgments
Special thanks to my Uterary agent Bill Gladstone, of \1/arerside Produc
tions, to Tracy Smith and Tom Dillon of Brady Publishing, and to the
following trade professionals who helped in one way or another to mnke
this a better book:
Terry Bell, Shreve Systems; Andy Bulgerin, Technology Works; Mari
Byron-Abbott, Polaroid Polarizer Division; ~fnry Cru·lson, Systems Con
trol; Clu·istine Colburn, Creative Solutions; Bob Cook, Sun Remarketing;
Frank Dexter, Educator's 1\ewsletter; Luke Fricndshuh, Ontrack Com
puter Sys1ems; Richard Harold, Shreve Systems; Owen Hartnett., Ohm
Software; Paul Johnson, Key Tronic; 'like McCord, MicroDoc; Jim
~Iclntosh, COT Softworks; Rosalind Preston, Nova International; Amar
Singh, Sophisticated Circuits; Roger Smith, Sun Remarkcting; Jean
Sorensen, Soft Solutions; Soren Storm, ScanCo; Richard Tom, On-Time
Mac Service; Anne Vershcl, Om-rack Computer Systems; Dan Wright,
John Fluke Manufacturing Company.
Contents
Introduction xiii
Color Test Pattern Generator (Color TPC) xiii
System Hequircments xiv
Starting Color TPC xiv
Indicating a Screen Size xvi
Test Patterns xvii
Hcfercnce Menu Items xviii
Special Yienu Items xix
Chapter 1 Safety Rules-Tools and Techniques 1
Standard Safety Precautions 1
Electrostatjc Discharge Precautions 2
Dealing with Stalic Electricity 3
Step 1- Wear J\'atural Clothing 4
Step 2-Choose a Suitable Work /\rca 4
Step 3-Grouncl Yourself 5
Step 4-Consiclcr the Weather 8
v
v1 Macintosh II Repair and Upgrade Secrets
Hand Tools 8
Phillips-Head Screwdrivers 8
Plastic TV Alignment Tools 9
Chip Pullers 9
Puny Knife 10
Test Equipment 11
Multirneters 11
Using a Digital Multimerer 12
Isolated AC Power Supplies 12
Soldering Equipment 14
Summary 15
Chapter 2 Adjustments-Apple High-Resolution Monochrome Monitors 17
Defi.ni lions, Goa Is, and Objecti vcs 18
Periodic Adjustment Procedure 19
Step 1-Rcmove the ContTol Cover Plate 20
Step 2-Adjust the Width 20
Step 3-Adjust the £Icight 24
Step 4- Adjust the Focus 25
Step 5- Replace the Control Cover Plate 26
WYSIWYG Modifications 26
Miscellaneous Adjustments 29
Adjusting the Horizontal-Hold Control 29
Adjusting the Vertical-Hold Control 30
Adjusting the Cut-Off Control 31
Monitor Accessories 33
Chapter 3 Adjustments-AppleColor High-Resolution RGB Monitors 35
Definitions, Goals, and Objectives 35
Subtractive versus Additive Color 37
The Primru·y Subtractive Colors, Red, Yellow, and Blue 37
How the Image Writer ll/LQ Makes Color 38
Contents VII
The Primary Additive Colors- Red, Blue, and Green 39
How the AppleColor l-Iigb-ResoJutjon RGB Monitor
Makes Color 39
Periodic Adjuslment Procedure 40
Srep 1-Hemove the Conn·ol Cover Plate 41
Step 2-Adjust the Width 42
Step 3- Adjust the Height 45
Step 4-Cenler the Display 45
Step 5-Converge 1J1e Dots 46
Step 6- Adjust the Focus 48
Step 7-H.eplace the Control Cover Plate 50
WYSIWYG Modifications 51
Adjusting the Cut-Off Control 53
Adjusting the Wrute-Balance Controls 54
Color Pwity AdjusLments 60
WYSIWYG Color Printing 62
Additional Convergence Adjustments 65
Adjustjng the Linearity ContTols 71
Component-Level Repairs 77
Ordering Replacement Parts 77
Ylonitor Accessories 78
Filters 78
Anti-glare Filters 79
Contrast Enhancement Filters 80
Anti-Badjat.ion Filters 80
Stands 81
Swivel Bases 82
Chapter 4 CPU Maintenance-Logic Board Upgrades 85
Take-Apart Procedtu·e for the Macintosh II/Hx/TTfx 86
Fan Controller Upgrades 89
Jdentif)'ing Power Supplies-Which Model? 90
v1n Macintosh II Repair and Upgrade Secrels
Installing l'm1 Controller Upgrades 91
Testing Fan Controller Upgrades 98
Mac I1 to ll-x Logic Board Upgrades 99
Mac 11/llx to Ilfx Logic Board Upgrades 101
Component-Level Hcpairs 102
Power-On Problems 102
Testing B2 103
Jumper: Cables 104
Power Supply Service 104
Problems with the Heal-Time Clock 106
SCSI Problems 106
ADB Problems 108
Other Problems 109
Take-Apart Procedure for the Macintosh llcx/lfci 110
Macintosh Hex to llci Logic Board Upgrades 112
Component-Level Hepuirs 113
Power-On Problems 113
Problems with the Real-Tirne Clock 114
Take-Apart Procedure for the Macintosh llsi 114
Error Sounds Common to AJl Models 117
Chapter 5 VRAM-Video Card Upgrades 121
One-Bit Video 121
four-Bit Video 122
Relative BriglttTJess-lntensity 123
Color Saturation 123
Eight-Bit Video 124
24-Bit Video 129
Display Size Limitation 130
Benefits of 24-Bit Video 130
Ncar-Photographic Quality 130
Photographic Quality 131
True Grayscale and True Color 131
Contents LX
The Drawbacks of 24-bit Video 131
VHAM Upgrades 132
Identifying Video Cards-\VhiciJ Model? 133
Installing Four-Bit to Eigbt-Bit Upgrades 135
Installing Eight-Bit to Twenty-Four-Bit Upgrades 137
[nstalling Thirty-Two-Bit Qu_ickDraw Software 139
DRAM Cpgrades 140
NTSC Compatibility Upgrades 142
\~laking an NTSC-Compatible Video Cable 142
Obtaining an Audio Cable 145
Installing (:~TSC) Video Card Utility Softwru·e 145
Activating tJ1e (YfSC) Video Card Utility Software 145
Use wid1 Original Macintosh II Video Cards 147
Cse with Macintosh II Extended Video Cards 148
Usc with Four-Bit Mac II High-Resolution Video C:ards 148
Vse with Eight-bit Mac II High-Resolution Video Cards 148
Deactivating the Video Card Utility Software 149
Configuring Macintoslt Display Cru·ds 149
Desktop Video Software 150
Troubleshooting Video Cards 151
Chapter 6 DRAM-Memory and Coprocessor Upgrades 153
Types oJ DRAM Chips 153
Memory Capacit-y 156
Power Requirements 156
peed 157
ldcntiiying Banks A and B 158
Conl'iguring the Macintosh Ufllx/l[(x and \llaciu1osh llcx 158
Configuring the Maci11tosh llci 162
Configuring the MacinLOsh Ilsi 162
lnstalling and Removing SI\IIMs 163
T roubleshooLing SLVJM Installations 165