IBM N51 Series

Symptom/Error FRU/Action
The computer does not
suspend or resume.
1. System Board
2. Voltage Converter
3. Lid Switch
4. Keyboard Control Card
The computer does not
power off.
1. Voltage Converter
2. System Board
3. I/O Panel Assembly
Real-time clock inaccurate.
(See “Testing the Battery
Pack” on page 82 before
replacing any FRUs.)
1. Backup Battery
2. System Board
Printer problems. 1. See “Printer
Checkout” on
page 468.
Serial or parallel port device
problems.
1. Device
2. Cable
3. System Board
4. Serial Adapter
5. I/O Panel Assembly
Internal Data/Fax modem
does not communicate with
a remote modem or a fax.
1. See “Fax/Modem
Checkout” on
page 466.
Model N51 (8551) 93