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Troubleshooting the Analyzer
To troubleshoot disk drive failures
To troubleshoot disk drive failures
Use this test to isolate disk drive failures to the A42 Memory assembly,
the A101 Disk Drive assembly, or the flexible disk.
1 Check disk controller.
a Press the following keys:
[
System Utility]
[
more]
[diagnostics]
[
service functions]
1125
[
enter]
[
functional tests]
[
I/O]
[
disk controller]
b If the disk controller test aborts and displays the message ‘’Mass
Storage Unit not Present!!,’’ the fuse on the Memory assembly,
Disk Drive assembly or disk drive cable is probably faulty. Go to
Step 2 to check the memory fuse.
c If the disk controller test fails, the A42 Memory assembly is
probably faulty.
d If the disk controller test passes, go to Step 3.
2 Check fuse on the A42 Memory assembly.
a Set the power switch to off ( O ).
b Remove the screws on each side of cover number 6.
c Pull out the assemblies attached to cover number 6 until the edge
of the assemblies clear the rear panel.
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