050 (continued)
Go to Step 054.
051
– Power off the system unit and wait 10 seconds.
– Unplug the remote LED connector from the system board.
– Power on the system unit with the Advanced Diagnostics diskette in drive
A.
– Select the Hard Disk Drive test.
– 386SX (72-pin memory SIMM) system boards:
While running the Seek test, check for +5 V dc between J13 pin 4 on the
system board and frame ground.
– 486SX and 486DX (30-pin memory SIMM) system boards:
While running the Seek test, check for + 5 V dc between J11 pin 5 on the
system board and frame ground.
– 486SX, 486DX, or 486DX2 (72-pin memory SIMM) system boards:
While running the Seek test, check for 0 V dc when the drive is running
and +5 V dc when it is idle (not running).
IS THE VOLTAGE READING CORRECT?
Yes No
052
Replace the system board.
053
Replace the LED cable.
054
(From steps 023, 038, and 050)
(Step 054 continues)
Diagnostic Information 2-89
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