DIAGNOSTICS error codes occur if the system recognizes a problem while
running the DIAGNOSTICS program. These error codes help identify possible
defective subassemblies.
Table 5-2 through 5-12 list possible error codes, a description of the error
condition, and the action required to correct the condition.
In each case, the Recommended Action column lists steps necessary to correct
the problem. After completing each step, run the DIAGNOSTICS program to
verify that the error condition has been corrected. If the error code
reappears, perform the next step, then run the DIAGNOSTICS program. Continue
until the DIAGNOSTICS program no longer detects an error condition.
The error codes are in the form of AYY - XX or AAYY - XX, A or AA denotes the
test or action that failed. XX denotes a specific problem. For example,
error code 603 - 07 indicated that the diskette drive write/read/compare test
failed because of a fatal error while writing.
For assistance in the removal and replacement of a particular subassembly,
see Chapter 7, " Removal and Replacement Procedures."
Table 5-2. Processor Test Error Codes
==============================================================================
Error
Codes Error Description Recommended Action
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101 - 01 CPU test failed Replace the system board and
retest for error codes
101 - 01 through 101 - 94
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102 - 01 Numeric coprocessor initial The following steps apply
status word incorrect to error codes 102 - 01
through 102 - 15:
102 - 02 Numeric coprocessor initial
control word incorrect 1. Replace the numeric
coprocessor and retest.
2. Replace the system
102 - 03 Numeric coprocessor tag word board and retest.
not all ones
102 - 04 Numeric coprocessor tag word
not all zeros
102 - 05 Numeric coprocessor exchange
command failed
102 - 06 Numeric coprocessor masked
exception incorrectly handled
102 - 07 Numeric coprocessor unmasked
exception incorrectly handled
102 - 08 Numeric coprocessor wrong mask
bit set in status register
102 - 09 Numeric coprocessor unable to
store real number
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Error
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