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Welcome to the Maintenance & Service Guide for the Presario
through 1275 series
Product
Description
Troubleshooting
This online guide is designed to serve the needs of those whose job it is to
repair Compaq products
Maintenance & Service Guide
product
This Guide will be periodically maintained and updated online as needed
Notice
First Edition (June 1999)
Compaq Computer Corporation
Preface
Maintenance and Service Guide
Symbols
The following words and symbols mark special messages throughout this guide
WARNING:
Serial Number
Locating Additional Information
The following documentation is available to support this product:
●Compaq Presario 1200 Series Portable Computer documentation set
●Introducing Windows 95 Guide
Product Description
Models and
Features
Controls and Lights
Left Side
portable computer allows full desktop functionality
Troubleshooting
If the problem is intermittent, check the
NOTE: computer several times to verify that the problem is solved
NOTE:
Illustrated Parts Catalog
System Unit
Cables
Boards
Miscellaneous Hardware &
Removal and Replacement Procedures
Memory
Module
Specifications
System interrupts
Memory Expansion
System DMA
Battery Pack
Dimensions
(All models with 12.1" display)
Height
Depth
Width
Compaq Home
Search
Products
Service
Worldwide
Connector Pin Assignments
Rear Connectors
Click on a link:
●Parallel Connector
●Serial Connector
Pin
Signal
Strobe
Acknowledge
Data Bit
Keyboard/Mouse
Data
Ground
Clock
External VGA Monitor
10Ground
11Monitor Detect
12DDC2B Data
13Horizontal Sync
14Vertical Sync
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Battery Pack Operating Time
●Increasing battery pack operating time
●Conditioning a battery pack
●Disposing of a used battery pack
Increasing Battery Pack Operating Time
Conditioning a Battery Pack
CAUTION:
To condition a battery pack, complete the following steps:
3.Your battery is re-conditioned
4.Plug in the AC adapter and begin using the computer
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Models & Features
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Page
Controls and Lights
Controls and
Lights
Bottom of
Unit
9. Instant
Internet
Access
10. Instant
Search
21. Number Lock Light
22. Cap
Lock Light
23. Scroll
Left Side Components
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Right Side Components
Models and Features
Controls and Lights
Left Side Components
Right Side Components
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Bottom of Unit
Rear Connectors
Power Management for Windows
1.AC Adapter
2.Parallel Printer Port
3.Serial Port
9. Security Slot
Power Management for Windows
Preliminary Steps
When these preliminary steps are completed, you are ready to run POST
Return to Troubleshootingindex page
Return to preliminary stepspage
Return to Troubleshootingindex page
1.800.AT.COMPAQ
Running POST
RAM failure
Replace the memory modules
Memory test data error
XX000YZZ RAM failure
XX000YZZ 201-MemoryError
605-DisketteDrive Error
Mismatch in drive type
1780-PrimaryHard Drive 0 Failure
Disk 0 failed to respond
Replace the hard drive
Perform Computer Checkup (TEST)
View System Information (INSPECT)
4.Press Enter to continue. The Diagnostics menu appears
5.Select View System Information (INSPECT) from the Diagnostics menu
6.Select the item you want to view from the following list:
System
Memory
Diagnostic Error Codes
501 through
Hard Drive Test
2402 through
Video Test
2458 through
Keyboard Test Error Codes
Failed ID Test
Check the keyboard connection. If
disconnected, turn off the computer
and connect the keyboard
Serial Test Error Codes
Serial port test failed
Check port configuration
Hard Drive Test Error Codes
Hard drive format test failed
Video Test Error Codes
501-xx Video controller test failed
502-xx Video memory test failed
503-xx Video attribute test failed
504-xx Video character set test failed
2402- Video memory test failed
2403- Video attribute test failed
2404- Video character set test failed
2405- Video 80 × 25 mode 9 × 14 character xx cell test failed
2406- Video 80 × 25 mode 8 × 8 character xx cell test failed
Audio Test Error Codes
Audio System Internal Error
TouchPad/Pointing Device Interface Test Error Codes
Mouse test failed
Replace the TouchPad and retest
6600- ID test failed
6605- Read test failed
6608- Controller test failed
6623- Random read test failed
3.Verify that drivers are loaded and properly installed
Return to the Troubleshootingindex page
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Solving Minor Problems
The following problems and possible solutions are addressed:
●Audio Problems
●Battery Pack and Battery Gauge Problems
●CD Drive Problems
Solving Battery Pack and Battery Gauge Problems
Solving Battery Pack and Battery Gauge Problems
Computer won't turn on when
Battery pack is discharged
Connect the computer to an
Solving CD Drive Problems
Solving CD Drive Problems
CD drive cannot read a compact disc
Compact disc is upside down or is
Open the CD loading tray, lay the
Solving Display Problems
1.Turn off the monitor
2.Turn off the computer
3.Disconnect the monitor signal cable from the computer
4.Turn on the monitor and allow it to warm up for one minute
Screen is dim
Screen is blank
Control for brightness or contrast (if applicable) is not set properly
Computer screen is in direct light
Screen save was initiated by Power Management due to lack of user activity
Solving Hard Drive Problems
Solving Hard Drive Problems
Reading hard drive takes an
System entered Hibernation due to
Give the system time to restore the
Solving Hardware Installation Problems
Solving Hardware Installation Problems
Solutions(s)
A new device is not recognized as part
Cable(s) of new external device are
Solving Minor Problems (continued)
or return to the Troubleshootingindex page
Contacting Compaq Support
4.Close the display and all exterior doors of the computer
Return to Compaq Diagnosticspage or Troubleshooting Indexpage
Models: 1245, 1255, 1256, 1260, 1262, 1266, 1267, 1272, 1273, 1274, and
| Home Page| Notice| Preface| Product Description| Troubleshooting
Illustrated Parts Catalog| Removal & Replacement Procedures| Specifications
System Unit
System Unit
Boards
Assembly
Mass Storage Devices
Battery Packs:
CPU Upper Cover with Power Switch
United States June 28
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Boards
System Unit
Boards
Display
Assembly
System Board and Memory Module:
1.800.AT.COMPAQ
Display Panel Assembly:
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Mass Storage Devices
System Unit
Boards
Mass Storage Devices
Miscellaneous Cable Kit
24x CD Drive
Miscellaneous Cables Kit
Documentation and Software
Place cursor over each device for a description of that item
Spare Part Number:
North America
Asia Pacific w/adapter
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Miscellaneous Hardware and Plastics Kit
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Miscellaneous Parts
Miscellaneous Parts (not shown):
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Documentation and Software
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Electrostatic Discharge
Generating Static
Typical Electrostatic Voltages
Relative Humidity
Event
10%
40%
Service Considerations
Tool and Software Requirements
To service the computer, you need the following:
●Compaq screwdriver kit (Spare Part No. 161946-001)
●Torx T-9screwdriver
Cables and Connectors
●Handle cables by the connector whenever possible
Handle flex cables with extreme care; they can tear easily
Select the desired illustration
●Removing a Cable from a ZIF Connector
Return to Removal & Replacement Procedures
Revised: 25 February
Preparing the Computer for Disassembly
Electrostatic Discharge
Service Considerations
Cables and Connectors
Preparing the Computer for Disassembly
Memory
Module
Return to Removal & Replacement Procedures
Removing the Battery Pack
Page
Removing the Palmrest Cover with Touch Pad
Electrostatic
Discharge
Considerations
Cables and
Speaker
2. Close the
computer and turn
the computer upside
Diskette Drive
Removing the Heatspreader
the
heatspeader
reverse the
previous
procedures
Removing the Keyboard
5. Disconnect
the flex cable
from the ZIF
connector on
the system
Removing the Processor
small-blade
screwdriver
Charger
into the
Board
Removing the Hard Drive
two screws
hard drive
mounting
bracket and
lift up the
Removing the CD Drive
located at
the back of
the CD drive
Removing the Battery Charger Board
To remove the battery charger board, complete the following steps:
Prepare the
computer for disassembly
3.Remove the hard drive
battery charger
board, reverse
the previous
procedures
When
Removing the Modem
modem off
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
SEARCH
1.800.AT.COMPAQ
Removing the Upper CPU Cover
Battery Charger Board
Display Panel Assembly
6.Remove the display panel assembly
To replace the Upper CPU cover, reverse the previous procedures
Removing the Speaker Assembly
drive
7.Remove the Upper CPU cover
8.Remove the battery charger board
To replace the speaker assembly, reverse the previous procedures
Removing the Diskette Drive
Upper CPU Cover
Dip Switch Settings
8.Remove battery charger board
9.Remove the diskette drive
When replacing the diskette drive, ensure that the
Removing the Fan Assembly
assembly
6. Remove
the hard
7. Remove
the Upper
Removing the System Board
Memory Module
10.Remove the battery charger board
11.Remove the diskette drive
12.Remove the CD drive
13.Remove the fan
The
indicates the position of the switch
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Removing the Memory Module
door, and
slide the
memory
module
door to the
System Interrupts
Return to the index list of Specifications
System DMA
System I/O Address
01F0H - 01F7H
01F0H
- 01F7H
0220H
- 022FH
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System Memory Catalog
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Display
13.0" (Diagonal) HPA Display
11.6
295.0 mm
8.58
218.0 mm
Memory Expansion
Battery Pack
Nickel Metal Hydride (NiMH)
Lithium Ion
(Li ion)
Dimensions
Return to the index list of Specifications
Diskette Drive
Page
Hard Drives
6.4-GB
Capacity Per Drive
6.49 GB
Seek Times
(Typical, Including settling in ms)
CD Drive
Page
28 June
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