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1st August, 1994
6.2. MECHANICAL PROBLEMS
The following flow charts may help you find the problem. They do not include
such obvious steps as checking the power connection or changing the PSU
or FCU if nothing appears on the operation panel.
6.2.1. ADF/Scanner
Symptom: Non feed
Check
1. Are the covers closed
properly?
2. Are the pick-up and feed
rollers clean?
3. Is the shutter mechanism
blocked? (If the shutter
does not lift up after
pressing Start, the tx
motor may be defective;
see step 10.)
4. Is the problem corrected
by adjusting the
separation roller (see
section 5-2-2)?
5. Are the gears and spring
clutches clean and
working properly?
6. Are the connections
between the operation
panel, FCU, and
document sensor loose?
7. Does the LCD prompt
change when a
document is placed in the
feeder?
8. Are the connections
between the PSU and
FCU and the tx motor
loose?
9. Does the tx motor work?
10. Does the FCU receive
+ 24V from the PSU?
11. Does the FCU output
power and phase drive
signals to the tx motor?
Action if Yes
Go to step 2.
Go to step 3.
Free the mechanism.
Finished
Go to step 6.
Connect the cables properly.
Go to step 8.
Connect the cables properly.
This troubleshooting
procedure has finished.
Go to step 11.
Replace the tx motor.
6-12
TROUBLESHOOTING
MECHANICAL PROBLEMS
Action if No
Close the covers securely.
Clean the rollers with a soft
cloth and water. Replace
them if they are damaged.
Go to step 4.
Put the separation roller
adjustment back to the
original setting. Try
replacing the separation
roller. If that does not help,
go to step 5.
Clean the gears and
clutches. Remove any
debris from the mechanism.
Go to step 7.
Replace the document
sensor, operation panel
PCB, or FCU.
Go to step 9.
Go to step 10.
Change the PSU.
Replace the FCU.
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Troubleshooting
