IBM RS6000 - 7026 - H70, Service Manual

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Firmware Checkpoints
Firmware uses progress codes (checkpoints) in the range of E1xx to EFFF. These
checkpoints occur during system startup and maybe be useful in diagnosing certain
problems. Service Processor checkpoints are listed in “SP Checkpoints” on
page 3-29.
If you replace FRUs and the problem is still not corrected, go to “MAP 1540:
Minimum Configuration” on page 2-17 unless otherwise indicated in the tables.
Table 3-5 (Page 1 of 10). Firmware Checkpoints.
Checkpoint Description Action/
Possible Failing FRU
E100 Reserved See the note on 3-29.
E101 Video enabled, extended memory
test See the note on 3-29.
E102 Firmware restart See the note on 3-29.
E103 Set memory refresh (composite img) See the note on 3-29.
E104 Set memory refresh (recovery block) See the note on 3-29.
E105 Transfer control to Operating
System (normal boot). See “E1xx Code Boot Problems” on
page 3-44.
E108 Run recovery block base memory
(test 2K), set stack See the note on 3-29.
E109 Copy CRC verification code to RAM See the note on 3-29.
E10A Turn on cache See the note on 3-29.
E10B Flush cache See the note on 3-29.
E10C Jump to CRC verification code in
RAM See the note on 3-29.
E10D Compute composite image CRC See the note on 3-29.
E10E Jump back to ROM See the note on 3-29.
E10F Transfer control to Open Firmware See the note on 3-29.
E110 Turn off cache, Check if composite
image CRC is valid See the note on 3-29.
E111 GOOD CRC - jump to composite
image See the note on 3-29.
E112 BAD CRC - initialize base memory,
stack See the note on 3-29.
E113 BAD CRC - copy uncompressed
recovery block code to RAM See the note on 3-29.
E114 BAD CRC - jump to code in RAM See the note on 3-29.
E115 BAD CRC - turn on cache See the note on 3-29.
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Service Guide