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Step 1540A-6
One of the FRUs remaining in the system unit is defective.
1. Turn the power off.
2. Exchange one of the FRUs in the following list.
System board (See notes on 2-1.)
Power supply.
3. Turn the power on.
Does the operator panel do one of the following:
Stop with any code other than
– FDC, FF2, FF3, or F4D (Model 140)
– E1DC, E1F2, E1F3, E1F7, or E14D (Model 150)
Alternate between
– FFD and any other code (Model 140)
– E1FD and any other code (Model 150)
NO Go to "Map 0410: Repair Checkout" in the Diagnostics Information for
Multiple Bus Systems.
YES Reinstall the original FRU.
Repeat this step until the defective FRU is identified or all the FRUs have
been exchanged.
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 1540A-1” on
page 2-22 in this MAP, and follow the instructions for the new symptom.
Chapter 2. Maintenance Analysis Procedures (MAPs) 2-27