Compaq Presario 1800 - Notebook PC Maintenance And Service Manual page 39

Models: XL180, XL181, XL182, XL183, XL184, XL185,
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 display the POST messages as they occur. Remember any POST error codes
that are displayed.
If the Notebook does not beep, POST has successfully completed its test and detected no
errors. The Notebook with automatically restart.
Note: If a bootable diskette is installed in the diskette drive the system will boot from
the diskette instead of the hard drive.
However, if POST detects errors, an error message will be displayed and/or an audible beep
will sound.
Note: If the Notebook is not functioning well enough to complete POST, or the display is
not functioning enough to show POST error messages, refer to the
this chapter.
POST Error Messages
A list of POST error codes and their descriptions are shown in the tables below.
Probable Cause
DMA, timers, etc.
162-System Options Not Set
Probable Cause
Incorrect configuration
CMOS reflects an invalid
configuration setting.
RAM failure
Memory test data error
XX000YZZ RAM failure
4 T
ROUBLESHOOTING
Presario 1800 Series
and XL190, XL191, XL192
102-System Board Failure
Recommended Action
Replace the system
Recommended Action
Run Setup.
Run Setup.
1. Replace the memory
modules.
2. Replace the system
1. Replace the memory
modules.
2. Replace the system
Replace the system
solution tables
board.
board.
board.
board.
P N M
RESARIO OTEBOOK AINTENANCE AND
later in
How do you start
Setup? By pressing
F10 during startup?
S G 1800 S
ERVICE UIDE ERIES