Ricoh FACSIMILE FAX77 Field Service Manual page 153

Symptom
Non-feed (continued) 4. Check that the following connection is not loose: FCU CN13 - SB-4.
Is the Replace Paper indicator lit even though paper is present?
Y N
Go to step 5.
Initialize the sensors (see page 2-27). If a sensor is defective, replace it. Go to
step 5 regardless of whether the indicator is still lit or not.
5. Does the FCU receive signals at CN13-3 from SB-4.
Y N
Replace SB-4.
Replace the FCU.
7. Check that the FCU CN11 - rx motor connection is not loose.
Does the rx motor work?
Y
N
Does the FCU output phase drive signals on CN11, pins 1 - 4?
Y
Replace the rx motor.
8. Replace the FCU.
Action
N
Replace the FCU.
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