Service manual

1-2 Samsung Electronics
PROBLEM ITEMS TO BE CHECKED HOW TO SOLVE
6-2. SENSOR
Black data when
you scan/copy
CanÕt print/copy
with No Paper dis-
played
Does the carriage operate normally and
go to the initial place, when you turn it
on with the carriage placed in the
middle?
- Is No Paper cleared when you press
No Paper sensor on ASF?
- Does the level of CON7-#2 turn from
H to L when you press No Paper
sensor on ASF?
- Check connection between the sensor
board of the carriage and the main
and check if FPC cable is damaged.
- Check if FPC is connected properly
with CN1 of the sensor board.
- Check if the signal of the sensor is
delivered well to CN1-#2 of the sensor
board.
- Replace FPC cable.
- Replace the sensor board.
- Check connection with CON7 of the
main board.
- Replace No Paper sensor on ASF.
PROBLEM ITEMS TO BE CHECKED HOW TO SOLVE
6-3. PAPER FEED
Automatic sheet
feeder feeds paper
but paper is not sup-
plied to the engine.
Automatic sheet
feeder cannot feed
paper.
CanÕt feed envelopes
Tilted Printing
- Check if actuator feed operates per-
fectly.
- Check if paper sensing optical sensor
is normal.
- Check if stopper clutch operates
perfectly.
- Check if too much paper has been
supplied.
- Check if pickup roller rubber of the
automatic sheet feeder is worn out.
- Check the location of the envelope
guide of automatic sheet feeder.
- Check if paper guide of the automatic
sheet feeder is adjusted to the size of
paper.
- Replace actuator feed, spring, or other
defective parts.
- Replace the paper sensing optical
sensor.
- Replace stopper clutch assembly.
- Supply appropriate amount of
paper(100 sheets of normal copying
paper).
- Replace pickup roller rubber.
- Open the envelope guide when you
feed envelopes.
- Adjust paper guide to the size of
paper.