Troubleshooting Without Diagnostics; Before Replacing Parts - 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

Troubleshooting without Diagnostics

This section provides information about how to identify and correct some common
hardware, memory, and software problems. It also explains several types of common
messages that may be displayed on the screen. The following pages contain
troubleshooting information about:
Audio
Battery
CD or DVD Drive
Diskette Drive
Display
Hard Drive
Hardware Installation
Since symptoms can be similar, carefully match the symptoms of the computer malfunction
against the problem description in the tables to avoid a misdiagnosis.
Å
WARNING: To avoid a potential shock hazard during troubleshooting procedures,
disconnect all power sources before removing the keyboard cover or the display
bezel.

Before Replacing Parts

Verify that cables are connected properly to the suspected defective parts.
Run Computer Setup after connecting external devices.
•
Verify that all required device drivers are installed.
•
Verify that all required changes have been made to the CONFIG.SYS file.
•
Verify that all required changes have been made to the AUTOEXEC.BAT file.
•
Verify that all printer drivers have been installed for each application.
•
20 T
ROUBLESHOOTING
Presario 1600XL Series
Memory
PC Card
Power
Printer
TouchPad
Keyboard/Numeric Keypad
P N
RESARIO OTEBOOK
M S G
AINTENANCE AND ERVICE UIDE
1600XL S
ERIES