IBM B50 manual No Go to -9 on

Step 1540-7

One of the FRUs remaining in the server is defective.

1.Turn off the power.

2.Exchange one of the FRUs in the following list: System board (see note 3 on page 2-1). Power supply.

3.Turn on the power.

Does the operator panel do one of the following:

￿ Stop with any code other than E1DC, E1F2, E1F3, E1F7 or E14D?

￿Alternate between E1FD and any other code?

NO	Go to "MAP 0410: Repair Checkout	" in theDiagnostics Information for
	Multiple Bus Systems.
YES	Reinstall the original FRU.
	Repeat the FRU replacement steps 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 1540-1”on page 2-18,and follow the instructions for the new symptom.

Step 1540-8

1.Turn off the power.

2.Install the riser card.

3.Install connector P10 to back of the riser card.

4.Turn on the power.

Does the operator panel do one of the following:

￿ Stop with any code other than E1DC, E1F2, E1F3, E1F7 or E14D?

￿Alternate between E1FD and any other code?

NO Go to “Step 1540-9” on page 2-23

2-227046 Model B50 Service Guide