IBM 6150 Hardware Maintenance Manual page 293

TNL SN20-9843 (03-27-87) to 75X0152
Step 4
1. Look at the type and slot positions you recorded, and install the boards
and adapters you removed.
2. Set the power switch on the system unit to Off.
3. Do the "Side Cover Replacement" on page 4-15.
4. Set the power switch on the system unit to On.
5. Follow the instructions on the menus to run the System Checkout.
If
needed, see page 2-16.
TESTING COMPLETE
DIAG-2
No trouble was found.
Press Enter to continue.
WERE YOU ABLE TO LOAD AND RUN THE "SYSTEM CHECKOUT"
AND DID THE "NO TROUBLE WAS FOUND" MESSAGE DISPLAY?
NO If you were unable to run the System Checkout because the system
stopped with 23 displayed in the two-digit display, go to
"Unresolved Problem PIC 0060" on page 3-0060-1 otherwise, go
to "Problem Determination Procedure PIC 0030" on
page 3-0030-1.
YES This completes the repair.
3-9840-4 Service Manual