Sc3Xxx - Ricoh B286 Service Manual

SC Code Descriptions

4.2.3 SC3XXX

Group 3 SC codes are related to image making.
Charge Corona Output Error
After sampling at 10 ms intervals, the
300 D
charge-corona feedback voltage
remained less than 0.5 V for more
than 200 ms.
305 D Charge Corona Wire Cleaner Error
The charge wire cleaner did not: (1)
come from the home position within 5
s, or (2) did return to the home
position within 3.75 s due to wire
cleaner overload.
392 D Development Bias Error
The development bias feedback voltage
was less than 0.3 V for longer than 200
ms while the PWM duty value was more
than 5% (indicating a development bias
leak).
B286/B289
! Charge corona unit defective
! High voltage cable defective
! Corona wire dirty or defective
CGB power pack fuse,
!
connections loose, broken, or
defective
! CGB power pack defective
! Cleaner unit blocked or damaged
! Until replacement parts become
available, set SP2804 to "0" to
disable the charge-corona
cleaning function so the machine
can operate.
Bias terminal damaged
!
! High voltage cable damaged,
defective
! CGB power pack defective
4-4 SM