Ricoh FT7770 Service Manual page 582

30 April, '89
I
Turn off the main switch, turn on Dip SW 1, and turn on the main switch.
Does the staple unit lower properly?
Y
N
I
Can the staple unit be moved manually by turning the staple unit knob.
o Correct the drive mechanism of the staple unit.
Disconnect the staple unit motor connector. Turn on the main switch and
manually move the staple unit by turning the staple unit knob.
signal levels of the staple unit HP and position sensors change
correctly?
o Replace the staple unit HP or position sensor.
Does +24 volts flow from CN160-7 to TP100 (GND) on the sorter stapler
main board?
Y N
\
o Replace the sorter stapler main board.
o Replace the staple unit motor.
Turn off the main switch, turn off Dip SW
on the main switch.
Y N
I
Can the gripper be moved manually.
Y N
I
o Correct the drive mechanism
\
Disconnect the gripper motor connector.
manually move the gripper.
forward sensors change correctly?
Y N
o Replace the gripper HP or forward sensor.
Do either +24 or -24 volts flow between CN160-4 and CN160-5 on the
sorter stapler main board when the main switch is turned off and on.
Y N
\
o Replace the sorter stapler main board.
o Replace the gripper motor.
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Do the grippers move
Do the signal levels of the gripper HP and
1, turn on Dip SW 3, and turn
properly?
of the grippers.
Turn on the main switch and
13-58
Do the