HP Portable PLUS Manuals

Manuals and User Guides for HP Portable PLUS. We have 3 HP Portable PLUS manuals available for free PDF download: Service Manual, Getting Started, Installation Instructions Manual

HP Portable PLUS Service Manual (177 pages)

Brand: HP | Category: Desktop | Size: 61 MB

Printing History
3
Table of Contents
4
Figure Title Page
7
Table Title Page
9
Chapter 1 General Information

10
- Description
  10
- Portable PLUS Configurations
  11
- Specifications
  12
- Portable PLUS Specifications
  12
- Identification
  14
- Accessories
  14
- Test Equipment
  15
- Recommended Tools and Equipment
  15
Chapter 2 Site Preparation Requirements

16
Chapter 3 Installation and Configuration

17
- Preparation
  17
- Installation
  17
- Functional Verification
  18
- Configuration
  19
Chapter 4 Preventive Maintenance

20
Chapter 5 Functional Description

21
- Introduction
  21
- Portable PLUS Block Diagram
  22
- Central Processing Unit (CPU)
  23
- Peripheral Processing Unit (PPU)
  24
- CPU Memory Map
  24
- Address/Control Circuit
  25
- Keyboard Interface
  25
- Keyboard Assembly
  26
- Liquid-Crystal (LCD) Interface
  26
- Liquid-Crystal Display
  26
- HP-IL Interface
  27
- Serial (RS-232-C) Interface
  27
- Serial Interface Connector Pin Assignments
  27
- Video Interface
  28
- Video Interface Connector Pin Assignments
  28
- Modem Interface
  29
- Direct-Connect Modem (Dealer-Installed Option)
  29
- Modem Interface Connector Pin Assignments
  29
- Clock/Ready Circuit
  32
- Power Supply
  33
- Battery
  35
- Battery Charger
  35
- Power-Up Routine
  38
- LCD Negative Supply
  39
- VLCD Switch Circuit
  40
- VFETBIAS Supply Circuit
  40
- Variable Control of the VFETBIAS Supply
  40
- Miscellaneous LCD Negative Supply Circuitry
  41
- RS-232-C Supply Voltages
  42
- Voltage Doublers
  42
- 11-Khz Oscillator
  43
- System ROM and Built-In RAM
  43
- Configuration EPROM
  44
- Plug-In Ports
  44
- System Extensions
  44
- Memory (RAM) Drawer
  44
- Software (ROM) Drawer
  44
- Video Interface
  45
- Snalinkj3270 Software Drawer
  45
Chapter 6 Removal and Replacement

47
- Introduction
  47
- Disconnecting the Battery
  47
- Removing the Battery Cover
  48
- Removing the Battery Terminal Cover
  48
- Moving the Battery Jumper to off
  49
- Disconnecting the Battery
  49
- Removing the Battery
  50
- Separating the Case
  51
- Removing the Bottom Screws
  51
- Unplugging the Top Case Cables
  52
- Separating the Case
  52
- Replacing the Pcas
  53
- Removing the Keyboard Module
  55
- Removing the Hinge Cover
  55
- Removing the Keyboard Top Nuts
  55
- Removing a Keyswitch
  56
- Removing the Keyboard Module
  56
- Removing the Display Module
  57
- Removing a Keycap
  57
- Removing the Display Screws
  58
- Removing the Clutches and Display Cable
  59
- Removing Ics
  63
- Replacing Plug-In Drawer Pcas
  64
Chapter 7 Adjustments

66
Chapter 8 Troubleshooting

67
- Overview
  67
- Troubleshooting Procedures
  67
- Comparison of Diagnostic Tests
  67
- Troubleshooting Procedures
  69
- Main Diagnostic Procedure
  70
- Startup Problems
  72
- Diagnostic Test Results
  75
- System RAM Diagnostic Identification
  80
- Repair Procedures
  81
- Software Drawer Jumper Configurations
  81
- Repairing the Power Supply
  85
- Repairing the Processors
  89
- Repairing the Display
  92
- Repairing the Keyboard
  94
- Repairing the Serial Interface
  96
- Repairing the Modem
  98
- Using Oscilloscope Routines
  99
- Diagnostic Module Scope Routines
  100
- Disc-Based Scope Routines
  102
- Selecting Oscilloscope Routines
  102
- Burning an EPROM
  104
- Testing the Recharger
  106
- Testing the Snalinkj3270 Software Drawer
  108
Chapter 9 Replaceable Parts

109
Chapter 10 Reference Information

127
- Introduction
  127
- Diagnostic Test Results
  127
- Descriptions of Diagnostic Tests
  133
- System Test
  133
- CPU Test
  133
- ROM Test
  133
- RAM Test
  133
- LCD Test
  134
- Keyboard Test
  134
- HP-IL Test
  134
- Modem Test
  135
- RS-232-C Test
  135
- Beeper Test
  135
- Timer Test
  135
- Sleep Test
  135
- Service References
  136
- Service Equipment
  136
- RS-232-C Test Connector
  136
- Snalink/3270 Test Board
  136
- Diagnostic Module
  137
Chapter 11 Product History

145
Chapter 12 Diagrams

159
- Software (ROM) Drawer PCA Component Location Diagram
  168
- Diagrams
  169
- Keyboard Rows and Columns
  170
- French Keyboard Layout
  171
- German Keyboard Layout
  171
- Italian Keyboard Layout
  172
- Swiss-French Keyboard Layout
  172
- Swiss-German Keyboard Layout
  173
- Dutch Keyboard Layout
  173
- Danish Keyboard Layout
  174
- Swedish Keyboard Layout
  174

HP Portable PLUS Getting Started (53 pages)

Brand: HP | Category: Laptop | Size: 2 MB

HP Portable PLUS Installation Instructions Manual (32 pages)

Brand: HP | Category: Desktop | Size: 1 MB

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HP Portable PLUS Manuals

HP Portable PLUS Service Manual (177 pages)

Table of Contents

Chapter 1 General Information

Chapter 2 Site Preparation Requirements

Chapter 3 Installation and Configuration

Chapter 4 Preventive Maintenance

Chapter 5 Functional Description

Chapter 6 Removal and Replacement

Chapter 7 Adjustments

Chapter 8 Troubleshooting

Chapter 9 Replaceable Parts

Chapter 10 Reference Information

Chapter 11 Product History

Chapter 12 Diagrams

HP Portable PLUS Getting Started (53 pages)

HP Portable PLUS Installation Instructions Manual (32 pages)

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