IBM 6151 Maintenance And Service Manual page 313

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Memory Expansion Option PIC 2100
This PIC analyzes the 21x and 37x SRA numbers. The 21x SRA
isolates the failure to an option. The 37x SRA isolates the failure
to a single memory module. The starting addresses can be used to
determine the address range where the failure occurred.
Step 1
Look at your SRN.
4. Write the Service Request Number here:
13-_ _
AJZBli7
IS ANY
OF
THE SRAs "210"?
YES
Go to "Step 6" on page 3-2100-7.
NO
Continue on the next page.
(6/88) Problem Isolation Charts
3-2100-1

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