MAP 0010: Start
This is the entry point for all MAPs.
In these MAPs, the descriptive terms “30-pin memory SIMM” and “72-pin
memory SIMM” are given for
board identification
only. The amount of SIMM
memory installed has no effect on the diagnostic steps described in the
MAPs.
The Advanced Diagnostics program comes in two versions on two diskettes
(packaged together with this book). One diskette, labeled “For Machine
Types 2133, 2155, and 2168,” is for all 486 system boards with 72-pin
memory SIMM sockets. The other, labeled “For Machine Types 2133 and
2155,” is for all other system boards. If in doubt about which kind of board
you are testing, try one diskette in the machine. Only the correct diskette for
the machine will run the Advanced Diagnostics program.
The Advanced Diagnostics program is intended to test only IBM products.
Non-IBM products, prototype cards, or modified options can give false errors
and invalid system responses.
All voltages in the MAPs are positive unless otherwise shown.
Use frame ground for all voltage checks unless otherwise specified.
If the Advanced Diagnostics program instructs you to replace a FRU, do not
do so until all applicable MAP steps have been completed.
A POST error code can appear on the display in two ways:
1. Under the System Memory count at the upper-left corner of the screen.
Note: A memory error can appear without the memory count as:
XXXXXX XXXX 201 (X can be a number or letter).
2. After two beeps, a window appears with the error code followed by an
explanation.
If you have a 162 error with no other error codes, run the Configuration
Utility and note any flagged options. Refer to the POST Error table in Step
065 on page 2-15.
If more than one POST error code is displayed, diagnose the first one.
Many times the other error codes are a result of the first error code.
Note: If you have any of the following POST error messages displayed, go
to the appropriate MAP; otherwise, continue with this MAP. (You
may have to wait up to 2 minutes for the error to be displayed.)
Error Code Component MAP
1XX System Board 0100
Diagnostic Information
2-3
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