Oce 3121 Technical & Service Manual page 700

a.Direction of rotation: in relation to combinations of drive signals
STMFW
(stapling motor CW rotation
signal)
0
1
0
STMFW∗
STMRV∗
Response to a stapling error
If an error occurs in the stapler and the stapling motor (M3) therefore cannot
operate normally, an alert signal is sent to the copier to indicate 'E531'.
The error can be reset: by removing the cause and switching the copier OFF,
then ON.
An excess load is imposed on the stapling motor, because of a staple jam.
1
The state of the home sensor MS7 does not change for 1 second or more.
2
The stapling motor is rotated CCW; if the state of the stapling home position
3
sensor (MS7) does not change for 1 sec or more thereafter (i.e., stapler not re-
turning to stapling home position), 'E531' will be indicated on the copier's
control panel.
550 TSM Océ 3121
Stapling motor
CW rotation signal J7-9
-10
Stapling motor
CCW rotation signal
Current when motor
is rotating CW
M3
Current when motor
is rotating CCW
-11
-12
STMFW
(stapling motor CW rotation
signal)
1
0
0
Tray controller PCB
24VPC
Q13
Q40
5V
Q37
Q12
Q2
Q35
5V
Q36
Q1
Functional description of the sorter
direction
CW
CCW
at rest
24VPC
Q7
Q34
STMRV∗
Micro-
processor
24VPC
Q33
STMFW∗