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Symptom-to-FRU Index
Beep Symptoms
No Beep Symptoms
Symptom / Error
FRU / 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
due to low battery voltage.)
Connect the AC Adapter
or install a fully charged
battery.
One beep every second.
(System is shutting down
due to low battery voltage.)
Connect the AC Adapter
or install a fully charged
battery. (Allow the
system to completely shut
down before changing the
battery.)
Two short beeps with error
codes.
POST error. See
“Numeric Error Codes” on
page 52.
Two short beeps with blank
screen.
1. System board
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 36.
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
No beep during POST but
system runs correctly.
1. Turn the volume up
and check the
speaker.
2. Speaker
3. Sub card
4. System board
ThinkPad 600
57
Summary of Contents for ThinkPad 600
Page 52: ...Running the Diagnostics 46...
Page 74: ...FRU Removals and Replacements 1020 DIMM Top View 1 1 2 68...
Page 75: ...FRU Removals and Replacements 1030 Battery Pack 2 Unlock Lock 1 ThinkPad 600 69...
Page 101: ...FRU Removals and Replacements ThinkPad 600 95...
Page 106: ...Locations Bottom View 1 Battery Pack 2 DIMM Cover 3 UltraslimBay Indicator Password Pads 100...
Page 108: ...Parts List Parts List Model 600 102...
Page 114: ...Parts List Model 600E 108...
Page 124: ...IBM Part Number 37L5151 Printed in U S A S1 L 9619 2...