Ricoh FT7770 Service Manual page 562

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30 April, '89
Check the action of the following sensors:
(All sensor signals change from 5 volts to ground.)
Timing (CN113-3)
Upper Jam (CN112-B8)
(CN112-B7)
Lower Jam
Upper Bin Copy (CN112-A8)
Lower Bin Copy (CN112-B9)
Check and correct any defective parts.
1) Paper will not feed through the manual feed section.
Replace the manual feed sensor.
13-38

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