SERVICE REMARKS31 October 1995
12. Never loosen the two screws securing the drum support plate. The
position of the drum support plate is set with a special tool at the factory
to ensure the proper gap between the drum and the development roller.
1.3 CHARGE CORONA
1. Clean the corona wire by sliding the corona unit in and out. (The cleaner
pads come into contact with the corona wire when the corona unit has
been slid all the way out.) The wire and casing can also be cleaned with
water or dry cloth. Do not use sandpaper or solvent.
2. Do not touch the corona wire with oily hands. Oil stains may cause white
bands on copies.
3. Make sure that the corona wire is correctly positioned between the
cleaner pads and that there is no foreign material (iron filings, etc.) on the
casing.
4. When installing a new corona wire, be sure to place the damper ring in
the front end block. (See Charge Corona Wire Replacement.)
5. When adjusting the charge corona current, always make sure that the
center of the drum shoe is aligned with the corona wire.
6. Clean the charge grid with a blower brush (not with a cloth).
7. The corona height should only be adjusted in the following two cases:
a) When the front end block is replaced
b) When the drum charge current is uneven
1.4 OPTICS
1. The positions of the following parts are very difficult to adjust, so do not
adjust them.
a) 4th/5th Mirror Home Position Sensor
b) Lens Home Position Sensor
c) Lens and 4th/5th Mirror Guide Rails
NOTE: Before removing a sensor bracket to replace a sensor, mark the
position of the bracket. Check the copy image (magnification and
focus) to determine the exact location of the sensor.
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ACEC
