Advertisement
1st August, 1994
Symptom: Non-feed
Check
9. Does the front cover
interlock switch pass
+ 24V and + 5V from the
FCU through to the FCU?
10. Do the upper and lower
paper feed motors and
clutches operate?
11. Are the connections
between the FCU and the
upper and lower paper
feed motors loose?
12. Does the FCU output
power and drive signals
to the motors?
13. Are the connections
between the FCU and the
upper and lower paper
feed clutches loose?
14. Does the FCU output
power and drive signals
to the clutches?
15. If the main and paper feed motors do not turn on but are in good condition, the basic
starting conditions for printing may not have been met. The conditions are as follows:
The fusing lamp must be at the correct temperature. See "Service Call Conditions: Hot
Roller Down".
The hexagonal mirror motor must have reached the correct speed. See "Service Call
Conditions: Mirror Motor Locked".
One page must have been stored in the page memory. Check the connections between
the components of the video data path (see section 1-5-2) and replace any defective
PCBs.
Symptom: Copy Jam - General
Check
1. Is the printer jammed with
debris?
2. Is the correct type of paper being used, and is it correctly loaded in the cassette?
3. Is a paper jam indicated
when the power is
switched on, even if there
is no jam.
4. Does the FCU receive the
correct signals from the
registration, lower paper
feed, and copy feed-out
sensors?
5. Is the correct paper size
sensor actuator being
used?
Action if Yes
Go to step 10.
Go to step 15
Connect the cables properly.
Replace the defective motor.
Connect the cables properly.
Replace the defective clutch.
Action if Yes
Clear the debris.
Go to step 4.
Change the PFU (lower
cassette only) and/or FCU.
Go to step 6.
6-16
TROUBLESHOOTING
MECHANICAL PROBLEMS
Action if No
Change the switch and/or
the actuator mechanism.
Go to step 11 (motors) or 13
(clutches).
Go to step 12.
Replace the FCU.
Go to step 14.
Replace the FCU.
Action if No
Go to step 2.
Go to step 5.
Change the defective sensor.
Install the correct actuator.
Advertisement
Troubleshooting
