IBM 6151 Maintenance And Service Manual page 142

Step 10
Notes:
1. If the test does not complete or an unexpected error occurs
(such as the system loops or hangs, the Diagnostic Error
message displays, anything displays in the two-digit display, the
keyboard does not respond, or you cannot end a test), go to
"Undetermined Problem PIC 9860" on page 3-9860-1.
2. If your system contains an option not listed on the
DIAGNOSTIC SELECTION menu, look for a supplemental
diagnostic information.
Run the checkout routines for all areas of the system. Start with
the areas you suspect are failing. Record the result of each test. If
any test results in an SRN, stop testing and answer the question
below.
THERE IS A HARDWARE PROBLEM IN YOUR MACHINE. DIAG·2
The Service Request Number is:
WRITE. ....down the above number.
RETURN ....to the Hardware Maintenance and Service Manual.
DID ANY TEST RESULT IN A SERVICE REQUEST
NUMBER?
YES Go to "Step 33" on page 3-0030-33.
NO Go to "Step 27" on page 3-0030-27.
3-0030-10 Service Manual