Ricoh B234 - Page 21

SERVICE CALL CONDITIONS
SM 4-19 B234/B235/B236/D101/D102/D103
Trouble-
shooting
Synchronization Detection Error 2: Other Than LD0
SC221 B
When a laser diode (other
than LD0) fired with the
polygon mirror motor
rotating at normal speed,
an synchronous detection
signal was not output
within 250 ms. This can
occur when the machine
recovers from the energy
save mode and there is
no paper available
• Make sure there is paper in the trays
• Cycle the machine off/on
• Harness connector of the laser synchronization
detector board is loose, broken, defective
• Laser synchronization detection board defective
or installed improperly
• LD unit defective
• IPU defective
• BCU defective
FGATE Error 1: Signal Failed to Turn On
SC230 B
The FGATE signal did not
switch on within 1 s of
when the lasers were
supposed to start writing
the image.
• Cycle the machine off/on
• Check the harnesses, connectors of the IPU,
Controller, BCU
• GAVD on the IPU board defective
• Controller defective
• BCU defective
FGATE Error 2: Signal Failed to Turn Off
SC231 B
The FGATE signal did not switch
off within 7 s of when the lasers
started writing the image, or
remained off at the beginning of
the next job.
• Cycle the machine off/on
• Check the harnesses, connectors of the
IPU, Controller, BCU
• GAVD on the IPU board defective
• Controller defective
• BCU defective
LD Error
SC240 B
The LD error terminal of the LDB
asserted an error.
• Cycle the machine off/on
• LDB harness connectors loose, broken,
defective
• LDB defective
• IPU defective
• BCU defective
Charge Corona Error 1: Charge Leak
SC300 B
A abnormal detection signal
(H) was detected for more
than 60 ms. Also, during this
time, the detected voltage
remained below –4V for
more than 50 ms.)
• Cycle the machine off/on
• CGB power pack harness connectors loose,
broken, defective
• Corona wire caps loose, missing
• CGB power pack defective
• Charge corona unit connectors loose,
broken, defective