6
53
Chapter 8 1 Troubleshooting Guide
Step
Cause/Detective section
Items to be checked
Result
Countermeasure
6
ADF document lead
edge sensor
When the ADF document lead edge
sensor is checked with HELP-011-
2, does
ADF DOCUMENT LEAD
EDGE SENSOR
display
0
in the
photopassing status and
1
in the
photointerrupting status?
NO Replace the ADF document lead
edge sensor.
YES
Go to step 7.
7
Gear
Is the gear damaged?
NO Go to step 8.
YES Replace the Gear.
8
24 V power supply
(UA071)
Measure the voltage between
CN601-1 (+24) and CN602-1
(GND) of the 24 V power supply
with a tester. Is it +24 V?
NO Replace the 24 V power supply.
YES
Go to step 9.
9
Main PCB unit
Does replacing the main PCB unit
solve the problem?
NO Go to step 10.
YES Finish
10
ADF stepping motor
Does replacing the ADF drive PCB
unit solve the problem?
NO Replace the ADF stepping motor.
ADF drive PCB unit
YES Finish
Содержание ADF DF7010
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