HP C2858A Service Manual page 133

Drafting plotters
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Error Code
010024
010025
010026
010027
010028
010029
01002a
01002b
01002c
01002f
010030
010031
010032
010033
010040
Troubleshooting
8-8
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Table 8-2. System Error Codes (Continued)
Problem Description
Pen interface ASIC test
failure.
Communication failure
between the main and servo
processors. Communication
occurs through the processor
support ASIC.
Servo interrupts not
occurring or not reaching
the main processor through
the processor support ASIC.
Error in servo drive
calculations.
Error in EEROM checksum
calculations.
Error in EEROM write.
RS 232 C loopback test
failure.
Centronics test failure.
Servo processor
communication error.
DRAM test failure.
Failed communications
between the carriage and
main processors.
Carriage ASIC test failure.
Pen interface ASIC and
carriage ASIC link test failure.
Error detected in X-axis servo
feedback loop.
Corrective Actions
Replace main PCA.
Replace main PCA.
Replace main PCA.
Replace main PCA.
Replace or clear EEROM. Replace
main PCA. Perform all calibrations.
Press Enter to temporarily clear.
Replace or clear EEROM. Replace
main PCA. Perform all calibrations.
Replace main PCA.
Replace main PCA.
Replace main PCA.
Replace main PCA.
For all 01003X codes, check trailing
cable connections and continuity. If
needed, replace the main PCA or
the carriage assembly.
Refer to 010030.
Refer to 010030.
Check X-encoder, encoder cable, main
PCA.

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