IBM 6151 Maintenance And Service Manual page 205

Step 27
Find the failing area in the table below; then do the action listed.
Test each FRU by running the failing procedure. If you identify
the failing FRU, go to "Step 28" on page 3-0060-30. If you cannot
identify a failing FRU, contact your service support person.
Failing Area
Action
Option Exchange the option.
Adapter
Exchange the adapter.
Fixed·disk drive or 1. Exchange the drive.
diskette drive
2. Exchange the adapter.
IBM 6156
1. Exchange the fixed-disk drive.
2.
Exchange the fixed-disk drive module.
3. Exchange the enclosure.
IBM 6157 1. Exchange the tape drive.
2. Exchange the tape drive adapter.
RT PC 6192
Go to "IBM RT PC 6192 Expansion Unit
PIC 0100" on page 3·0100·1.
Other devices
1.
Exchange the adapter.
2. Exchange or repair the device.
(6/88) Problem Isolation Charts 3-0060-29