Ricoh ADF DF7010 Field Service Manual page 55

Step Cause/Detective section
ADF document lead
6
edge sensor
7
Gear
24 V power supply
8
(UA071)
9
Main PCB unit
ADF stepping motor
10
ADF drive PCB unit
Items to be checked
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?
Is the gear damaged?
Measure the voltage between
CN601-1 (+24) and CN602-1
(GND) of the 24 V power supply
with a tester. Is it +24 V?
Does replacing the main PCB unit
solve the problem?
Does replacing the ADF drive PCB
unit solve the problem?
Chapter 8 1 Troubleshooting Guide
Result Countermeasure
Replace the ADF document lead
NO
edge sensor.
Go to step 7.
YES
NO Go to step 8.
YES Replace the Gear.
NO Replace the 24 V power supply.
Go to step 9.
YES
NO Go to step 10.
YES Finish
NO Replace the ADF stepping motor.
YES Finish
６
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