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Symptom-to-FRU index
Beep symptoms
No beep symptoms
Symptom or error
FRU or action, in
sequence
One beep and a blank,
unreadable, or flashing LCD
1. Reseat the LCD
connector
2. LCD assembly
3. System board
One long and two short
beeps, and a blank or
unreadable LCD
1. System board.
2. LCD assembly.
Two short beeps with error
codes
POST error. See
“Numeric error codes” on
page 42.
Two short beeps with blank
screen
1. System board.
Symptom or error
FRU or action, in
sequence
No beep, power-on indicator
on, LCD blank, and no
POST
1. Ensure that every
connector is
connected tightly and
correctly.
2. DIMM.
3. System board.
No beep, power-on indicator
on, and LCD blank during
POST
1. Reseat DIMM.
2. System board.
No beep, during POST but
system runs correctly
1. Speaker.
LCD-related symptoms
Important
The TFT LCD for the notebook computer contains
many thin-film transistors (TFTs). A small number of
dots that are missing, discolored, or always lighted is
characteristic of TFT LCD technology, but excessive
pixel problems can cause viewing concerns. The LCD
should be replaced if the number of missing,
discolored, or lighted dots in any background is:
SVGA (12.1 in.): 5 or more bright dots, 5 or
more dark dots or a total of 9 or more bright and
dark dots.
XGA (13.3 in.): 8 or more bright dots, 8 or more
dark dots or a total of 9 or more bright and dark
dots.
ThinkPad 570 and 570E
45
Summary of Contents for MT 2643
Page 1: ...January 2000 This manual supports ThinkPad 570 MT 2643 2644 ThinkPad 570E MT 2643 2644 ...
Page 22: ...18 ThinkPad 570 and 570E Hardware Maintenance Manual ...
Page 57: ...Removing and replacing a FRU 1010 Battery pack ThinkPad 570 and 570E 53 ...
Page 59: ...Removing and replacing a FRU Cable route ThinkPad 570 and 570E 55 ...
Page 64: ...Removing and replacing a FRU 60 ThinkPad 570 and 570E Hardware Maintenance Manual ...
Page 87: ...Removing and replacing a FRU ThinkPad 570 and 570E 83 ...
Page 97: ...Removing and replacing a FRU Battery pack in the UltraBase ThinkPad 570 and 570E 93 ...
Page 99: ...Locations ThinkPad 570 and 570E 95 ...
Page 102: ...Locations Password pads 98 ThinkPad 570 and 570E Hardware Maintenance Manual ...
Page 103: ...Parts list Parts List ThinkPad 570 and 570E 99 ...
Page 107: ...Parts list LCD FRU 13 3 inch XGA TFT continued ThinkPad 570 and 570E 103 ...
Page 114: ...Parts list 110 ThinkPad 570 and 570E Hardware Maintenance Manual ...