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31 December 1992
6.4 DEVELOPMENT
1. Be careful not to nick or scratch the development roller.
2. Clean the drive gears after removing used developer.
3. Initial conditioning (SP#5) and toner density sensor voltage adjustment
(SP#35) are necessary when the developer is replaced.
4. Never loosen the paint locked screw securing the center of the toner car-
tridge holder and the paint locked screw securing the doctor blade.
5. Dispose of used developer according to local regulations.
6.5 TONER SUPPLY
1. Clean the image density sensor with a dry cloth or a blower brush.
2. Vsg adjustment is required in the following cases:
a) When the image density sensor is replaced
b) When the main board is replaced
c) When the drum has been replaced and Vsg is out of specification
d) When there have been problems with toner supply and Vsg is out of
specification
6.6 TRANSFER AND SEPARATION
1. Clean the corona wires with a blower brush. If the wires are cleaned with
a dry cloth, make sure that the wire does not become stretched.
2. When adjusting the corona current, always use the drum current
measuring drum.
4-51
SERVICE REMARKS
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