Ricoh FACSIMILE FAX77 Field Service Manual page 155

Symptom
Jam
Abnormal noise
5.
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.
6. There may be a cutter problem. Do a paper cycle. Does the cutter work proper-
ly? If not, check the following.
Check that the connector from FCU CN6 to the cutter is not loose.
Does the FCU output a cutter motor drive signal on CN6-1?
Y N
Replace the FCU.
Replace the cutter motor and/or connector.
Check that the cutter sensor (SB-7) actuation mechanism works properly.
Does the FCU receive signals at CN6-3 during a paper cycle?
Y N
Replace SB-7 and/or the connector.
Replace the FCU.
7. Replace the FCU.
1.
Is the cover closed properly?
2. Check that the printer mechanisms are assembled correctly.
Replace the rx motor or the FCU.
3.
Action
N
Replace the FCU.
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