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 125.
2. System Board
3. Power sources
No beep, power-on indicator
on, and a blank LCD during
POST.
1. System Board
No beep, power-on indicator
on, and a blinking cursor
only during POST.
1. System Board
No beep during POST but
system runs correctly.
1. Turn the volume up
and check the
speaker.
2. Speaker
3. System Board
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
LCD backlight not
working, or
LCD too dark, or
LCD brightness cannot
be adjusted, or
LCD contrast cannot
be adjusted.
1. Reseat the LCD
connectors.
2. LCD Assembly
LCD screen
unreadable, or
Characters missing
pels, or
Screen abnormal, or
Wrong color displayed.
1. See important note
for “LCD-Related
Symptoms.”
2. Reseat all LCD
connectors.
3. LCD Assembly
4. System Board
ThinkPad 560 (2640)
139
Summary of Contents for 365xX
Page 2: ......
Page 8: ...vi IBM Mobile Systems HMM...
Page 10: ...viii IBM Mobile Systems HMM...
Page 108: ...Bottom View 1 Legs 98 IBM Mobile Systems HMM...
Page 111: ...Notes ThinkPad 365X 365XD 2625 101...
Page 112: ...Parts Listing 365X 365XD 2625 Model 365X Diskette Drive 102 IBM Mobile Systems HMM...
Page 114: ...Model 365XD CD ROM Drive 104 IBM Mobile Systems HMM...
Page 163: ...1030 Battery Pack Turn the computer upside down 1 2 ThinkPad 560 2640 153...
Page 167: ...3 4 5 6 6 Frame Keyboard 7 7 ThinkPad 560 2640 157...
Page 169: ...ThinkPad 560 2640 159...
Page 171: ...1070 Speaker Battery Pack 1030 Keyboard Unit 1050 1 2 ThinkPad 560 2640 161...
Page 180: ...170 IBM Mobile Systems HMM...
Page 187: ...Notes ThinkPad 560 2640 177...
Page 188: ...Parts Listing 560 2640 178 IBM Mobile Systems HMM...
Page 198: ...188 IBM Mobile Systems HMM...
Page 222: ...IBM Part Number 84H8101 Printed in U S A S84H 81 1...