IBM THINKPAD 760C/CD (9546) - Manual (Page 55)

Beep Symptom FRU/Action
4-3-2
Programmable interval timer
channel 2 test in progress
or failure. 1. System Board
4-3-4
Real-time clock test in
progress or failure. 1. System Board
4-4-1
Serial port test in progress
or failure. 1. System Board
4-4-2
Parallel port test in progress
or failure. 1. System Board
4-4-3
Math coprocessor test in
progress or failure. 1. Processor Card
2. System Board
No Beep Symptoms
Symptom/Error FRU/Action
No beep during POST but
computer works correctly. 1. System Board
2. Audio card
No beep during POST and
no display. 1. See “Undetermined
Problems” on
page 49.
2. System Board
3. Audio card
4. Memory
5. See “Power Systems
Checkout” on page 35.
ThinkPad 365 (2625) 43