Table Of Contents - Compaq Portable II Maintenance And Service Manual

Table of Contents

Notice1
Tools And Supplies2
Optional Tools2
Caution2
Personal Computer3
Warning3
Operating And Performance Specifications4
Introduction4
System Unit4
Keyboard5
Video Display Unit5
Megabyte Fixed Disk Drive5
360 Kbyte Diskette Drive6
Megabyte Diskette Drive6
1.44 Megabyte Diskette Drive Specifications7
Power Supply7
Power On Self Test/Problem Isolation8
Power On Self Test8
System Problem Isolation8
Setup11
Chapter 4. Diagnostic Procedures12
Error Messages And Codes13
Power On Self Test Messages13
Chapter 5.2 Diagnostics Error Codes14
Processor Test Error Codes15
Recommended Action16
Cmos Ram Test Failed17
Speaker Test Failed18
Memory Related Error Codes32
Memory Configurations32
Version 1 System Board Using 64K Rams (0 - 256 Kbytes)34
Compaq Portable Ii Personal Computer40
Chapter 6. Illustrated Parts Catalog40
Chassis41
Compaq Portable Ii Personal Computer Chassis41
Common Chassis42
Compaq Portable Ii Personal Computer Common Chassis42
Compaq Portable Ii Personal Computer Mechanical Chassis45
Chapter 6.4 Mechanical Chassis45
Compaq Portable Ii Personal Computer Monitor46
Chapter 6.6 Cable Kit46
Chapter 6.7 Miscellaneous Hardware Kit47
Chapter 7. Removal And Replacement Procedures48
Disconnecting The Ac Power Cord49
Locating The Line Filter On/Off Switch Assembly49
Chapter 7.2 Ac Power Fuse49
Outer Access Casing51
Replacing The Ac Power Fuse51
Removing The Outer Access Casing53
Chapter 7.4 Keyboard Assembly53
Disconnecting The Keyboard Connector From The System Board54
Returning The Computer To A Flat Position On The Work Surface54
Removing The Keyboard55
Chapter 7.5 Front Bezel55
Removing The Brightness Control Knob56
Placing The Computer In An Upward Position56
Removing The Six Front Bezel Mounting Screws57
Removing The Front Bezel57
Positioning The Computer58
Loosening The Mine Power Supply Mounting Screws59
Removing The Power Supply Mounting Screws60
Removing The Power Supply60
Disconnecting Fan Assembly And Automatic Power Switching Connectors61
Chapter 7.7 Fan Assembly61
Automatic Power Switching Board (Aps)62
Removing The Fan Assembly62
Automatic Power Switching63
High Voltage Access Plate64
Tying Together The Harness Wires64
Board Slots Access Plate65
Mass Storage Device Access Plate66
Removing The Board Slots Access Plate66
System Memory Board Access Plate67
Removing The Mass Storage Device Access Plate67
Exposing The System Memory Board Access Plate68
Removing The System Memory Board Access Plate68
Cable Tray Access Plate69
Exposing The Cable Tray Access Plate69
Multipurpose Controller Board70
Removing The Cable Tray Access Plate70
Locating The Multipurpose Controller Board71
Disconnecting The Mass Storage Device Signal Cables71
Video Display Controller Board72
Removing The Multipurpose Controller Board72
Locating The Video Display Controller Board72
512/2048 Kbyte Memory Expansion Board74
Removing The Video Display Controller Board74
Handle75
Removing The Handle76
Chapter 7.18 System Board76
Disconnecting The Mass Storage Device Power Cable78
Disconnecting The Keyboard Power, Vdu Power78
Removing The System Board79
Chapter 7.19 Battery79
512/1536 Kbyte System Memory Board80
Removing The Battery80
Chapter 7.21 Memory Option81
Mass Storage Device Subassembly85
Replacing A Memory Chip85
Mass Storage Device Subassembly Enclosure86
Removing The Drive Bezel From The Front Bezel87
Removing The Mass Storage Device Subassembly Enclosure Mounting Screws87
To Remove The Fixed Disk Drive Assembly89
Removing The Fixed Disk Drive90
Diskette Drive90
Speaker And Brightness Potentiometer91
Removing The Diskette Drive91
Removing The Brightness Potentiometer92
Chapter 7.24 Video Display Unit92
Disconnecting The Vdu Power Cable93
Returning The Computer To Flat Position On The Work Surface93
Disconnecting The Vdu Signal Cable94
Disconnecting And Removing The Vdu High Voltage Cable95
Removing The Vdu Sweep Board95
Removing The Four Vdu Mounting Screws96
Removing The Video Display Unit From The System Chassis96
Jumper Settings, Switch Settings, And Adjustments98
System Board Jumper Settings98
512/2048 Kbyte Memory Expansion Board Jumper Settings100
360 Kbyte Diskette Drive Switch Settings101
Multipurpose Controller Board Switch Settings102
Multipurpose Controller Board Switch And Jumper Settings102
Chapter 8.5 Fixed Disk Drive Controller Board105
Video Display Controller Board Jumper Settings106
Serial/Parallel Interface Board Switch Settings111
Video Display Unit Adjustments112
Crt Adjustment Procedure112
Standard Working Position113
Location Of Brightness Control Knob114
Adjusting The Crt Brite Control114
Adjusting The Cry Width Control115
Adjusting The Focus Control116
Character Height Adjustment116