IBM 6151 Maintenance And Service Manual page 264

(Step 13 continued)
IS THE DIAGNOSTIC CHECKOUT THAT FAILED IN THE
LIST ON THE PREVIOUS PAGE?
YES
Do the following:
1. Remove all adapters and options not listed on the
previous page. Be sure to record the slot number and
what cables are attached.
2. Disconnect the Data and Signal cables from all
fixed-disk and diskette drives installed, except diskette
drive A.
3. Continue on the next page.
NO
Do the following:
1. Remove all adapters and options not listed on the
previous page, except the one for the failing diagnostic
checkout. If the adapter that was needed for the failing
diagnostic checkout has a device connected, be sure the
cable for the device is connected and the power switch
on the device is set to On. Record the slot number and
what cables are attached.
2. Disconnect the Data and Signal cables from all
fixed-disk and diskette drives installed, except diskette
drive A.
3. Continue on the next page.
3-0060-14 Service Manual