IBM 6150 Hardware Maintenance Manual page 179

TNL SN32-9004 (August 87) to 75X0152 or 75X0166
Step 19
The following FRUs are required to run the System Checkout. Remove
any other FRUs that are installed in the system unit.
• The system board.
• The processor board.
• A memory expansion option in slot C.
• An adapter for the diskette drive.
• An IBM AT High Capacity Diskette Drive in drive position A.
• A display adapter.
• A display.
• The cables for the diskette drive.
• The power supply.
• The cooling fan.
• A keyboard.
Run the System Checkout. The TEST OPTION and the DIAGNOSTIC
TEST LIST menu will display if the configuration was changed. Follow
the instructions as they display.
WERE YOU ABLE TO LOAD AND RUN THE "SYSTEM
CHECKOUT" AND DID THE "NO TROUBLE WAS FOUND"
MESSAGE DISPLAY?
YES One of the FRUs you removed is failing. Install the FRUs one
at a time until the failing FRU is identified. Test each FRU by
running the failing diagnostic checkout. The TEST OPTION
and the DIAGNOSTIC TEST LIST menu will display if the
configuration was changed. Follow the instructions as they
display. If you identify a failing FRU, use the removal and
replacement procedures in the section that applies to the FRU
and exchange it, then go to "Step 25" on page 3-0060-26. If you
cannot identify a failing FRU, contact your service support
person.
NO Continue on the next page.
3-0060-20 Service Manual