IBM 6151 Maintenance And Service Manual page 71

Step 12
Look at the display.
DIAG·!
The following option wa.s detected previously by the diagnostics, but is
now undetected
. Option
Has the option been removed from the system, moved to another location,
or turned off?
DID THE "TEST OPTION" MENU DISPLAY?
YES The TEST OPTION Menu displays when an option is in the
configuration record but it was not sensed or it was sensed
in a different location during POST.
1. Record the option displayed.
2. Choose an item on the menu; then record the SRN when
it displays. This is the repair checkout result.
3. Check for proper installation of the option. If the
option is a new FRU, it may be defective.
4. Go to "Step 16" on page 3-0010·17.
NO Continue on the next page.
(6/88) Problem Isolation Charts 3-0010-13