General Checkout
The diagnostic tests are intended to test
only
IBM
products. Non-IBM products, prototype cards, or modified
options can give false errors and invalid computer
responses.
001
DOES THE PROBLEM APPEAR TO BE A POWER
SUPPLY FAILURE?
Yes No
002
Go to Step 006.
003
DO ALL SYSTEM-STATUS INDICATORS REMAIN OFF?
Yes No
004
Go to Step 006.
005
Go to “Power Systems Checkout” on page 78.
006
– Power-off the computer and all external devices.
– Check all cables and power cords.
– Make sure no diskette is in the drive.
– Power-on all external devices.
– Power-on the computer and check for the following
responses:
1. All system-status indicators appear once for about
1 second.
Note: Some indicators remain on and others go
off after 1 second.
2. Memory test (the number increases.)
3. One or two short beeps.
DID YOU RECEIVE THE RESPONSES LISTED ABOVE?
Yes No
007
1. If the memory count is incorrect, go to “Memory
Checkout” on page 77.
2. Go to “Symptom-to-FRU Index” on page 87.
If that does not correct the problem, go to
“Undetermined Problem” on page 94.
74 IBM Mobile Systems HMM - Volume 1
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