Ricoh Aficio MP2550B Service Manual page 677

Item No.
Clamp
Roller Motor
Stapler Unit
36 Moves the stapler from side to side.
Motor
Drives a large cam that alternately clamps and unclamps the lower
clamp roller, which is the idle roller of the clamp roller pair.
When these rollers are clamped, they are part of the paper feed path
Lower
and feed the stack toward the bottom fence of the fold unit. When the
Retraction 40
idle roller is retracted, the stacks falls a very short distance (3 mm)
Motor
onto the fold unit bottom fence below. These rollers remain
unclamped while the bottom fence positions the stack for folding and
while the stack is folded by the fold rollers.
Fold Roller
44 Controls the rollers that fold the paper.
Motor
Fold Plate
46 Controls the plate that makes the fold in the paper.
Motor
Bottom
Raises the bottom fence and stapled stack to the correct fold position
Fence Lift 47
for the paper size.
Motor
Punch
48 Punches the holes in the paper.
Motor
Paper
Position Controls side-to-side movement of the paper position sensor in the
52
Sensor punch unit.
Slide Motor
Punch
Movement 57 Moves the punch from side to side.
Motor
Solenoids
Item
Proof Tray Gate Solenoid
Positioning Roller Solenoid
Staple Tray Gate Solenoid
Switches
Item No.
Upper Limit
4
Switch
SM
No.
13 Controls the proof tray junction gate
16 Controls the positioning roller.
21 Controls the staple tray junction gate
Detects when the shift tray is at the highest possible position,
and cuts power to the shift tray motor.
37
Component Layout
Purpose
Purpose
Purpose
B793