Beep Symptoms
Symptom/Error FRU/Action
Continuous beep. 1. System Board
Repeating short beeps.
(See “External
Keyboard/Auxiliary Input
Device Checkout” on
page 465 before replacing
any FRUs.)
1. Keyboard
2. Keyboard Control Card
3. System Board
One long and one short
beep.
1. System Board
One long and two short
beeps.
1. Display Control Card
2. System Board
One short beep and a
blank, unreadable, or
flashing display with no
external display attached.
(See “CL57 LCD FRU
Replacement Notice” on
page 133 before replacing
any FRUs.)
1. LCD Panel
2. Display Control Card
3. System Board
4. LCD Cable
One short beep and
Diskette Prompt or a
program load from the hard
disk or unable to read
diskette.
1. Diskette Drive
2. System Board
3. Diskette Drive Cable
Two short beeps and a
blank display.
1. System Board
Miscellaneous Symptoms
Note: A
no beep
symptom can be caused by incorrect
volume setting of the speaker. Set the speaker
volume to its maximum position.
Symptom/Error FRU/Action
A
no beep
and a blank or
unreadable display during
POST.
(See “Power Systems
Checkout” on page 117
before replacing any FRUs.)
1. System Board
2. Voltage Converter
3. Communications
Cartridge
4. Hard Disk Drive
5. Display Control Card
6. Any options
7. Power source when
failing
A
no beep
with a blinking
cursor.
1. System Board
2. Display Control Card
3. Communications
Cartridge
A
no beep
with a normal
display during POST.
1. Speaker
2. Indicator Card
3. System Board
4. Keyboard Control Card
Model CL57 (8554) 127
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