21 September 1998SERVICE CALL CONDITIONS
SC743 - Punch motor abnormal (sorter stapler with punch)
Definition: [level: B]
1) After turning on the main switch, the punch home position sensor is not
activated within 1,100 pulses. Then an R2 jam is indicated.
2) In punch mode, the punch home position sensor is not activated within 950
pulses after starting the punch motor. Then an R2 jam is indicated.
If any of these conditions occur twice, an SC occurs.
Possible causes:
Punch motor
Punch home position sensor
SC744 - Staple jam release abnormal (A821 sorter stapler only)
Definition: [level B]
In the initial condition, the paper sensor is activated and the staple home position
sensor is de-activated. Then, an R3 (staple) jam is indicated. If this condition
occurs 4 times in a row, this SC is displayed.
Possible causes:
Stapler
SC745 - Grip unit motor abnormal (A821 sorter stapler)
Definition: [level: B]
1) When the grip unit has moved to the staple position, the grip unit home
position sensor is on. Then an R2 jam is indicated.
2) When the grip unit returns from the staple position to the home position, the
grip unit home position sensor does not turn on within 1070 pulses. Then an
R2 jam is indicated.
3) When the grip unit moves from the home position forward, and moves back
to the home position, the grip unit home position sensor does not turn off
within 350 pulses. Then an R2 jam is indicated.
If any of these conditions occur twice, an SC occurs.
Trouble- shootingPossible cause:
Grip unit home position sensor defective
Grip unit motor defective
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ACEC
