B245/B276/B277/B268/B269 Service Manual 18-Jan-06
129
No.
Definition
Symptom Possible Cause
Mechanical total counter
901 B
The mechanical total
counter does not work
properly.
Mechanical total counter defective
BICU defective
Disconnected mechanical total
counter
Engine total counter error
903 B
The checksum of the total
counter is not correct.
NVRAM on the BICU defective
Printer error
920 C
A fatal error is detected in
the printer application
program
Printer application program defective
Hardware configuration incorrect
(including memory shortage)
Printer font error
921 C
Necessary font files are
not found.
Font file not installed
Memory error
928 B
The machine detects a
discrepancy in the
write/read data during its
write/read test (done at
power off/on and at
recovery from low power
or night/off mode).
Memory defective
BICU defective
Poor connection between BICU and
memory
Printer application program error
954 B
The printer status does
not become ready when
the printer application
program is necessary for
image processing.
Application program defective
Image transfer error
955 B
The controller is not able
to transfer images when
the engine needs them.
Application program defective
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