B793 34 SM
Electrical Component Descriptions
Boards
Item No. Purpose
Main Board 17 Controls the finisher.
Punch Board 51 Controls the punch unit.
Sensors
Item No. Purpose
Proof Tray
Exit Sensor
1 Detects paper when it is fed out to the proof tray.
Shift Tray
Exit Sensor
3 Detects paper when it is fed out to the shift tray.
Shift Tray
Position
Sensor
5 Detects when the shift tray is at the correct height to receive paper.
Rear
Booklet
Tray Full
Sensor
6
One of two sensors that the machine uses to determine when the
booklet tray is full.
Front
Booklet
Tray Full
Sensor
7
One of two sensors that the machine uses to determine when the
booklet tray is full.
Proof Tray
Full Sensor
8 Detects when the proof tray is full.
Exit Guide
Plate HP
Sensor
9 Detects when the exit guide plate is at home position
Entrance
Sensor
10 Detects when paper comes into the finisher
Staple Tray
Exit Sensor
12 Detects paper leaving the bottom of the stapler
Lower Limit
Sensor
19
Detects when the shift tray has moved to its lowest possible position
(the shift tray is full).
Upper
Cover
Sensor
20 Detects when the upper cover is open
Shift Motor
HP Sensor
24
Detects when the side-to-side motion of the shift roller is at home
position
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