Symptom-to-FRU error messages
Beep symptoms
No Beep Symptoms
Symptom or error
FRU or action, in
sequence
Continuous beeps.
1. System board.
One beep and a blank,
unreadable, or flashing
LCD.
1. Reseat the LCD
connector.
2. LCD assembly.
3. System board.
One beep, and the message
“Unable to access boot
source.”
1. Boot device.
2. System board.
One long and two short
beeps, and a blank or
unreadable LCD.
1. System board.
2. LCD assembly.
One long beep followed by
four short beeps each time
the power switch is
operated.
(System cannot power on
because of low battery
voltage.)
Connect the ac adapter or
install a fully charged
battery.
One beep every second.
(System is shutting down
because of low battery
voltage.)
Connect the ac adapter or
install a fully charged
battery. (Allow the
system to shut down
completely before
changing the battery.)
Two short beeps with error
codes.
POST error. See
“Numeric error codes” on
page 18.
Two short beeps with blank
screen.
1. System board.
Symptom or error
FRU or action, in
sequence
No beep, power-on indicator
not on, and a blank LCD
during POST.
1. Go to “Power system
checkout” on page 9.
2. System board.
3. Check the power
outlet.
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.
23
Summary of Contents for MT 2645
Page 2: ...January 2000 This manual supports ThinkPad 600X MT 2645 ThinkPad 600X MT 2646...
Page 44: ...FRU removals and replacements 1020 DIMM 39...
Page 45: ...FRU removals and replacements 1025 Modem card 40 ThinkPad 600X Hardware Maintenance Manual...
Page 46: ...FRU removals and replacements 1030 Battery pack 2 Unlock Lock 1 41...
Page 51: ...FRU removals and replacements 8 46 ThinkPad 600X Hardware Maintenance Manual...
Page 73: ...Locations Password pads 68 ThinkPad 600X Hardware Maintenance Manual...
Page 74: ...Parts list Parts list 69...