Compaq 1600XL - Manual (Page 52)

4 T ROUBLESHOOTING P RESARIO N OTEBOOK M AINTENANCE AND S ERVICE G UIDE 1600XL S ERIES
Presario 1600XL Series
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 Troubleshooting
Tables .
Power-On Self Test Messages
102-System Board Failure
Probable Cause Recommended Action
DMA, timers, etc. Replace the system board.
162-System Options Not Set
Probable Cause Recommended Action
Incorrect configuration Run Computer Setup.
CMOS reflects an invalid
configuration setting.
Run Computer Setup.
RAM failure 1. Replace the memory
modules.
2. Replace the system board.
Memory test data error 1. Replace the memory
modules.
2. Replace the system board.
XX000YZZ RAM failure Replace the system board.