Replacing The Developer - Konica Minolta 7145 Service Manual

6.3

Replacing the Developer

A. Periodically replaced parts/cycle
• Developer: Every 240,000 copies (7145)
• Developer: Every 200,000 copies (7235/7228/
7222)
B. Procedure
1. Remove the developing unit from the main body.
2. Release the hooks [1]. Lift the developing unit
cover [2], and remove it.
3. Tilt the developing unit so that the agitator
screws [1] are toward the bottom, and rotate the
agitator input gear [2] counterclockwise as nec-
essary to discharge all developer from within the
developing unit and from the developing sleeve
[3].
4. Wipe away any toner remaining on the develop-
ing regulator plate [4].
5. Pour new developer evenly over the agitator
screws [1].
Note:
• When carrying out replacement, take care to pre-
vent dirt and debris from entering the system.
6. Rotate the agitator input gear [2] 1 counterclock-
wise so that the developer moves into the inside
of the developing unit.
Note:
• After installing new developer, do not turn the
developer-input gear or agitator input gear in the
clockwise (reverse) direction.
[2]
[3]
[4]
3-37
DEVELOPING UNIT
[1]
[1]
[2]
[1]
[2]
2