Ricoh B132 Service Manual page 434

SERVICE CALL CONDITIONS
SC236 D FGATE error 1: Feedback remains HIGH for C write
After the start of timing to create
the cyan image, the PFGATE
register of the GAVD does not
assert, even after 5 sec. when:
• Images are created on the
• MUSIC patterns are created
The BICU received no feedback
(LOW signal) from the LD unit to
indicate that the lasers started
firing at the prescribed time to
create the patterns.
SC237 FGATE error 1: Feedback remains LOW for C write
After the start of timing to create
the cyan image, the PFGATE
register of the GAVD does not
assert, even after 5 sec. when:
• Images are created on the
• MUSIC patterns are created
The BICU received a LOW
feedback signal, but the signal
remained LOW (indicating the
lasers were still operating), even
after creation of the next image
should have started.
SC240 C LD error 1: K
SC241 C LD error 1: Y
SC242 C LD error 1: M
SC243 C LD error 1: C
An error is asserted at the LD
error terminal of the black,
yellow, magenta, or cyan LD
driver after initialization of the LD
because the power to the LD
was higher or lower than the
prescribed limit.
B132/B200
drum.
on the transfer belt.
drum.
on the transfer belt.
• GAVD on the BICU defective
• PCI I/F on the IPU defective
• ASIC on the IOB defective
• Controller board disconnected, defective
• Harness between the BICU and LDB unit
disconnected, loose, or defective.
• Check board connections, replace
• GAVD on the BICU defective
• PCI I/F on the IPU defective
• ASIC on the IOB defective
• Check board connections, replace
• LD defective due to wear, damage, short
circuit
• LDB harness disconnected, loose or
defective
4-34 SM