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ECA 038 - 8502/8503 errors on 8555



ECA 038 - 8502/8503 errors on 8555

 

8502/8503 errors on 8555 with 0-8MB adapter

PURPOSE:
This ECA provides a replacement 2-8MB expanded memory adapter for the 8555 models 031 and 061 (55 SX) when the existing 0-8MB expanded memory adapter fails with 8502 and/or 8503 errors.

NOTE:
The 0-8MB adapter does not use the same memory modules as the 2-8MB adapter. Refer to the detail section of this ECA to ensure that correct memory is ordered.

PHYSICAL check:
To be eligible for this ECA:, 8555 SX systems must have a 0-8MB expanded memory adapter installed (FRU P/N 1497253), and must be failing with 8502 and/or 8503 POST errors.

DETAIL:
8555 SX systems with a 0-8MB expanded memory adapter may fail with 8502 and/or 8503 POST errors. Replacing the 0-8MB adapter with a 2-8MB adapter will prevent these errors. The 2-8MB FRU (P/N 85F0480) contains an option diskette, installation instructions, and an adapter card without memory. The option diskette version 1.1 contains an updated device driver. Device driver installation instructions are available to the customer in the 2-8MB adapter installation instructions. The installation instructions and option diskette should be retained by the customer.

The 0-8 MB adapter uses 256KB and 1MB memory modules; the 2-8 MB adapter uses physically larger 1MB and 2MB modules. Therefore, when replacing the defective 0-8MB adapter with a 2-8MB adapter, all adapter memory modules must also be replaced.

The 2-8 MB adapter can be populated only with 1MB and 2MB SIMMs. It is possible to encounter failing systems which have a 0-8MB adapter populated at .5MB increments. In these situations, the replacement 2-8MB adapter should be populated at the next highest MB of memory. For example, when replacing a 0-8MB adapter populated with 2.5MB of memory, a 2-8MB adapter with 3MB of memory should be used.

The following chart shows the correct combination of memory to order for use on the replacement 2-8MB adapter FRU P/N 85F0480.

mem on failing 0-8MB adapter total mem required for 2-8MB adapter (Qty.) and FRU P/N of mem for 2-8MB adapter
0.5MB 1MB (1) 1MB FRU 90X8624
1.0MB 1MB (1) 1MB FRU 90X8624
1.5MB 2MB (1) 2MB FRU 92F0104
2.0MB 2MB (1) 2MB FRU 92F0104
2.5MB 3MB (1) 2MB FRU 92F0104 (1) 1MB FRU 90X8624
3.0MB 3MB (1) 2MB FRU 92F0104 (1) 1MB FRU 90X8624
3.5MB 4MB (2) 2MB FRU 92F0104
4.0MB 4MB (2) 2MB FRU 92F0104
4.5MB 5MB (2) 2MB FRU 92F0104 (1) 1MB FRU 90X8624
5.0MB 5MB (2) 2MB FRU 92F0104 (1) 1MB FRU 90X8624
6.0MB 6MB (3) 2MB FRU 92F0104
6.5MB 7MB (3) 2MB FRU 92F0104 (1) 1MB FRU 90X8624
8.0MB 8MB (4) 2MB FRU 92F0104


NOTEs:
Return all used parts using normal parts return procedures.

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