Troubleshooting

 

Symptom Charts/System (Continued) - 8

 

 

 

System (Continued)

 

 

 

 

System

1

Verify that system software is version 7.1.2 or later

intermittently

2

(9150) or 7.5 or later (9150/120).

crashes or hangs

Verify SIMMs are noncomposite and installed in like pairs

 

 

 

3

(same size/speed).

 

 

 

Verify software is known-good and Power Mac compatible.

 

 

 

4

Verify a terminator or video card is installed in the PDS slot.

 

 

 

5

Clear parameter RAM. Hold down <Command> <Option> <P>

 

 

 

 

<R> during startup but before “Welcome to Macintosh”

 

 

 

6

appears.

 

 

 

Replace DRAM SIMMs. Refer to Memory manual.

 

 

 

7

Reseat ROM, RAM, and cache SIMMs, and reseat terminator

 

 

 

8

card.

 

 

 

Replace cache SIMM or DIMM.

 

 

 

9

Replace logic board. Retain SIMMs.

 

 

 

10

Replace power supply.

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Image 34
Apple 9150 manual System