Ricoh FT7770 Service Manual page 108

30
April, '89
(Pressure Applied)
-SP Manual cleaning blade off (MBOF)-
7-3
order to check an efficiency of the cleaning blade, the cleaning blade can
In
be released by SP 7-3, in the meantime, the copy can be made.
-SP Cleaning blade off timing (CBOF)-
7-4
Paper dust or toner build up on the blade edge decreases the efficiency of
the cleaning blade.
of the blade each time pressure is released.
release interval:
"Set"
When "Set" is selected, the
the main motor stops.
"Reset"
When "Reset" is selected, the cleaning blade is
following cases:
After
1. every 100 copies (when the main motor stops).
2. When
no copies have been made and no keys on the operation panel
have
been pressed for 15 minutes.
To
prevent this problem, a mylar strip cleans the edge
cleaning blade is released every 250 copies when
(pressure
SP
7-4 selects the following
released in either of the
2-52
Released)