From Newsgroup: comp.sys.ibm.ps2.hardware

SYSTEM BOARD FRU PART NUMBER MUST BE P/N92F0108 OR P/N85F0077
SYSTEM BIOS DATE MUST BE 09-24-91 OR EARLIER

ECA098, OBSOLETE


THIS ECA PROVIDED A ROM* BIOS** REPLACEMENT KIT FOR THE 8535
OR 8540 SYSTEM THAT EXPERIENCE CORRUPTED HARDFILE DATA DURING
RESTORE OPERATIONS FROM A DISKETTE DRIVE OR TAPE UNIT.

* ROM=READ ONLY MEMORY.
**BIOS=BASIC INPUT/OUTPUT SYSTEM.
NOTE:
BOTH ROM BIOS MODULES ARE ON THE SYSTEM BOARD AT LOCATIONS
U19 AND U31. INSTALLATION INSTRUCTIONS ARE INCLUDED IN THE
ROM BIOS KIT.


PHYSICAL CHECK:
TO QUALIFY FOR ROM BIOS REPLACEMENT KIT, THE SYSTEM MUST MEET
THE FOLLOWING REQUIREMENTS:

1. THE SYSTEM UNIT SERIAL NUMBER MUST FALL WITHIN THE FOLLOWING
RANGES:

8535 SYSTEMS-
A. MODEL 8535-040,1. SERIAL NUMBER 23-A0000 TO 23-M9999.
2. SERIAL NUMBER 78-TXD00 TO 78-XPV99.
B. MODEL 8535-043,1. SERIAL NUMBER 23-AA000 TO 23-TC999.
2. SERIAL NUMBER 78-AAAA0 TO 78-BLTG9.
C. MODEL 8535-24X,1. SERIAL NUMBER 23-TD000 TO 23-ZK999.
2. SERIAL NUMBER 78-BLTH0 TO 78-CYKP9.

8540 SYSTEMS-
A. MODEL 8540-040,1. SERIAL NUMBER 23-AA000 TO 23-NN999.
2. SERIAL NUMBER 78-NM000 TO 78-PM999.
B. MODEL 8540-043,1. SERIAL NUMBER 23-AAA00 TO 23-LGX99.
2. SERIAL NUMBER 78-YMKW0 TO 78-ZFFY9.
C. MODEL 8540-045,1. SERIAL NUMBER 23-AAAA0 TO 23-LYDX9.
2. SERIAL NUMBER 78-XBX00 TO 78-YDG99.

************************** OR ******************************
2. THE SYSTEM BIOS DATE MUST BE 09-24-91 OR EARLIER.

THE FOLLOWING PROCEDURE SHOULD BE USED TO DETERMINE SYSTEM
BIOS DATE:
- AT THE C: > TYPE "BASIC" AND PRESS "ENTER".
- AT THE "OK" TYPE THE FOLLOWING EXACTLY AS SHOWN:
DEF SEG=-1: FOR X=5 TO 12: PRINT CHR$(PEEK(X));: NEXT
- IF "SYNTAX ERROR" IS DISPLAYED INSTEAD OF A DATE, VERIFY
THE LINE WAS TYPED EXACTLY AS SHOWN ABOVE.
- IF THE DATE DISPLAYED IS 09-25-91 OR LATER, THE SYSTEM IS
NOT ELIGIBLE FOR THIS ECA.
- IF THE DATE DISPLAYED IS 09-24-91 OR EARLIER, THE SYSTEM
IS ELIGIBLE FOR THIS ECA IF REQUIREMENT 3 (BELOW) IS MET.

************************* AND ****************************

3. SYSTEM BOARD FRU PART NUMBER MUST BE P/N92F0108 OR P/N85F0077

NOTE:
SYSTEM BOARD FRU PART NUMBERS THAT ARE NOT LISTED ABOVE ARE
NOT EXPOSED TO THESE PROBLEMS.

PREREQUISITES: NONE

COMPANION: NONE

CONCURRENT: NONE

DETAIL:
A LIMITED NUMBER OF 8535 AND 8540 SYSTEMS MAY EXPERIENCE
CORRUPTED DATA ON THE HARDFILE DURING A RESTORE OPERATION
FROM A TAPE UNIT OR DISKETTE DRIVE. THIS PROBLEM CAN ONLY
OCCUR WITH HARDWARE WHICH ATTACHES TO THE SYSTEM BOARD
DISKETTE DRIVE CONNECTOR (J15).

IF THE SYSTEM UNIT MEETS ALL OF THE REQUIREMENTS CALLED OUT
IN THE "PHYSICAL CHECK" SECTION, A REPLACEMENT SET OF
SYSTEM ROM BIOS (FRU P/N92F2434) SHOULD BE INSTALLED.

NOTE:
A REPLACEMENT STARTER DISKETTE, VERSION 1.20 OR HIGHER, IS
INCLUDED WITH THE REPLACEMENT ROM BIOS KIT. THE OLD LEVEL
STARTER DISKETTE, VERSION 1.10 AND EARLIER, IS NOT COMPATIBLE
WITH THE REPLACEMENT ROM BIOS AND SHOULD BE PROMPTLY DISCARDED.

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