IBM THINKPAD 760C/CD (9546) - Manual (Page 217)

Symptom / Error FRU / Action in Sequence
Two short beeps with error
codes. POST error. See
“Numeric Error Codes” on
page 199.
Two short beeps with blank
screen. System board
No Beep Symptoms
Symptom / Error FRU / Action in Sequence
No beep, power-on indicator
not on, and a blank LCD
during POST. 1. Go to “Power
Systems Checkout”
on page 193.
2. System board
3. Subcard
4. Power sources
No beep, power-on indicator
on, and a blank LCD during
POST. 1. System board
2. Subcard
No beep, power-on indicator
on, and a blinking cursor
only during POST. 1. System board
2. Subcard
No beep during POST but
system runs correctly. 1. Turn the volume up
and check the
speaker.
2. Speaker
3. System board
4. Subcard
LCD-Related Symptoms
Important
The LCD for the notebook computer contains over
921 000 thin-film transistors (TFTs). A small number
of missing, discolored, or lighted dots (on all the time)
is characteristic of TFT LCD technology, but excessive
pixel problems can cause viewing concerns. The LCD
should be replaced if the number of dots satisfies the
following condition:
The number of missing, discolored, or lighted
dots in any background is 21 or more.
Symptom / Error FRU / Action in Sequence
No beep, power-on indicator
on, and a blank LCD during
POST. 1. System board
2. Subcard
ThinkPad 380, 380D, 385, 385D (2635) 205