Maintenance Analysis Procedures 2-1540-15
Step 13(from Step 12)
1. Set the power switch on the system unit to Off.
2. Starting with the devices, disconnect a device or cable connector from the last adapter
installed.
3. Insert the first diagnostic diskette into the diskette drive.
4. Set the power switch on the system unit to On.
5. Wait for one of the following conditions to occur:
•The DIAGNOSTIC OPERATING INSTRUCTIONS screen is displayed.
•The system stops and c31 is displayed in the three-digit display.
•The 3.5-inch diskette drive in-use light is on and c07 is displayed in the three-digit
display. Insert the next diagnostic diskette. Continue this substep until all diskettes are
loaded or c31 is displayed in the three-digit display.
•The system stops for at least three minutes and a constant number, character, or
symbol other than c31 is displayed in the three-digit display and the power light is on.
•The system stops and two or more numbers with values between 221 and 296 are
displayed alternately in the three-digit display.
•The system stops and a flashing 888 is displayed in the three-digit display.
•The power light does not come on, or the power light comes on but does not stay on.
Is the DIAGNOSTIC OPERATING INSTRUCTIONS screen displayed or is c31
displayed in the three-digit display?
NO Repeat this step until the defective device or cable is identified or all the
devices and cables have been disconnected.
One of the FRUs remaining in the system unit is defective.
To test each FRU, exchange the FRUs in the following order:
1. Adapter (last one installed)
2. System planar
3. CPU card
4. Voltage regulator card (Model 39H)
5. Power supply.
If the symptom did not change and all the FRUs have been exchanged, call
your service support person for assistance.
If the symptom has changed, check for loose cards, cables, and obvious
problems. If you do not find a problem, return to Step 1 in this MAP and
follow the instructions for the new symptom.
YES The last device or cable you disconnected is defective.
Exchange the defective device or cable.
Go to “Map 0410: Repair Checkout” in the
POWERstation and
POWERserver Common Diagnostics and Service Guide.