Ricoh FT7770 Service Manual page 62

30 April, '89
Wire Cleaner
3.
Paper dust and/or toner particles on the charge corona wires may interfere
with charging and cause low density bands on copies. The wire cleaner cor-
rects this problem by automatically wiping the charge corona wires clean.
Once every 5,000 copies, the wire cleaner is activated when the main switch
is turned on. The hot roller temperature must be less than 100 °C for the
wire cleaner to be activated,
the
When dc motor in the front end block turns on,
bracket from the
back again.
Related Service Call Condition: See FIELD MANUAL for details.
SC 17: CC Wire Cleaner Motor Malfunction
home position to the rear end of the corona unit and then
2-6
it drives
the cleaner