Power-On Self Test (Post) - Compaq 1600XL Maintenance & Service Manual

Model 1600T, 1600-XL140, 1600-XL141, 1600-XL142, 1600-XL143, 1600-XL144,
1600-XL146, 1600-XL147, 1600-XL150 XL156, XL157, XL255, XL256, XL257, and XL258

Power-On Self Test (POST)

To run POST, complete these steps:
Turn off the Notebook, then turn it on again. As soon as the Compaq logo appears, press
the ESC key to clear the logo and display the POST messages as they occur.
If the Notebook does not beep, POST has successfully completed its test and detected no
errors. POST then reboot from the hard drive, or from a bootable diskette if one is installed
in the diskette drive.
However, if POST detects errors, these are indicated by messages displayed on the screen
and/or audible messages. A list of the POST error codes and what they mean is shown in
the table below.
Note: If the system is not functioning well enough to run POST, or if the display is not
functioning well enough to show POST error messages, refer to the
Tables.
Probable Cause
DMA, timers, etc.
Probable Cause
Incorrect configuration
CMOS reflects an invalid
configuration setting.
RAM failure
Memory test data error
XX000YZZ RAM failure
4 T
ROUBLESHOOTING
Presario 1600XL Series
Power-On Self Test Messages
102-System Board Failure
Recommended Action
Replace the system board.
162-System Options Not Set
Recommended Action
Run Computer Setup.
Run Computer Setup.
1. Replace the memory
modules.
2. Replace the system board.
1. Replace the memory
modules.
2. Replace the system board.
Replace the system board.
P N
RESARIO OTEBOOK
Troubleshooting
M S G
AINTENANCE AND ERVICE UIDE
1600XL S
ERIES