Step 5

(from Step 4)

The failure may be caused by a defective SIMM on the last memory card installed. To isolate the failing SIMM in a pair of SIMMs, do the following:

1.Set the power switch on the system unit to Off. Using a pair of operational SIMMs for the type of memory card used, install the pair of SIMMs in locations 1 and 2 on one of the suspected memory cards.

2.Set the power switch on the system unit to On. If operational, the system will stop and

two or more numbers with values between 221 and 296 are displayed alternately in the three-digit display, or a solid 262 will be displayed.

For Models 340, 34H, 350, 355, 360/36T, 365, 370/37T, and 375, 380, 390, 39H, and 397, the system stops with a value of 243 for up to six minutes and then changes to to a value of 262.

3.If the system still fails, continue testing the SIMMs in pairs (locations 3 and 4, 5 and 6, 7 and 8) until the system does not fail, or all the SIMMs on the suspected memory cards have been tested.

Were you able to isolate the failed pair of SIMMs?

NO

Exchange the memory card. If this does not correct the problem, go to Step

 

6.

YES

Go to ªMap 0410: Repair Checkoutº in thePOWERstation and

 

POWERserver Common Diagnostics and Service Guide.

2-1540-6Installation and Service Guide

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Image 48
IBM 7012 manual Were you able to isolate the failed pair of SIMMs?