IBM 6151 Maintenance And Service Manual page 399

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Undetermined Problem PIC 9860
Use this PIC to analyze the following symptoms:
• SRA number 986.
• Diagnostic error messages displayed while running diagnostics.
• Numbers are displayed in the two-digit display after the
DIAGNOSTIC OPERATING INSTRUCTIONS menu has
displayed.
Note: For flashing c6-20, see "Two-Digit Display Codes During
Diagnostic Programs" on page 2-19.
• Flashing numbers in the two-digit display.
• Diagnostic loops and hangs with nothing displayed in the
two-digit display.
• The keyboard will not respond while running diagnostics.
• You cannot exit or end a test.
Step 1
Look at the bottom of the display.
DID THE "DIAGNOSTIC ERROR" MESSAGE DISPLAY?
YES Go to "Step 3" on page 3-9860-3.
NO Continue on the next page.
(6/88) Problem Isolation Charts 3-9860-1