IBM PS/1, Hardware Maintenance Service

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MAP 2400 (continued)
102 (continued)
– Power off the system unit.
– Disconnect the hard disk signal cable from the system board.
– Power on the system unit.
DID THE SYMPTOM REMAIN?
Yes No
103
Go to MAP 1700 step 024 on page 2-83.
104
The following information helps you diagnose a video problem in the display
through the use of beeps.
– Power off the system unit.
– Insert the Advanced Diagnostics diskette into drive A.
– Listen for the beep(s) at the end of the POST, and wait for the LED on
drive A to come on, go off, and stay off.
Note: If the LED fails to light after 1 minute, continue with this step.
– Follow the steps in Figure 2-14 on page 2-117. Listen for the beep each
time you press Enter.
Note: Use the numbers in the typewriter area of the keyboard. Do not
use the numeric keypad.
2-116