Ricoh Mp C3000 Service Manual

							Punch Unit 
SM 57 B793 
B793 
Booklet 
Finisher 
 
These SP codes adjust th e punch hole alignment:  
ƒ  SP6128 Adjusts the punch positions in  the direction of paper feed. 
ƒ  SP6129 Adjusts the punch position perpendi cular to the direction of feed. 
For more, see Section 5. Service Tables. 
2.12.2 PAPER POSITION DETECTION 
 
The paper position sensor slide motor [A] extends  and retracts the paper position slide that 
holds the paper posit ion sensor [B].  
The paper position sensor detec ts the position of the paper edge. The detected position of 
the paper is used to move the punch unit ac ross to the correct position for punching. 
When the paper position slide is retracted, the paper position slide HP sensor [C] detects 
when the slider is at home position and stops paper  position slide motor.   
						

							Punch Unit 
B793 58  SM 
2.12.3 PUNCH UNIT MOVEMENT 
 
The punch movement motor [A] extends and retrac ts the punch unit to put it at the correct 
position for punching.  
The punch movement HP sensor  [B] detects the position when it retracts, switches off the 
punch movement motor, and stops th e punch unit at its home position. 
The punch drive motor [C] fires the punches  that punch holes in the paper below. 
2.12.4 PUNCH SELECTION AND FIRING 
 
The punch drive motor [A] turns the small,  notched encoder wheel [B] through the gap in 
the punch encoder sensor [C]. The sensor output is used  to control the punch timing.  
						

							Punch Unit 
SM 59 B793 
B793 
Booklet 
Finisher 
 
The timing for 2-hole punching [E] is  different from 3-hole punching [F]. 
When the punch unit is at t he punching position, the punch  motor turns until the encoder 
detects the starting position for 2-hole or 3-hole punching. 
ƒ  This is the ‘1’ position in the diagrams (the first diagram is for 2-hole punching, and the  second diagram is fo r 3-hole punching). 
Then, the punch drive motor turns counter-clo ckwise to the ‘2’ position. This movement 
punches the holes in the paper.  
Then, the punch drive motor turns clockwise to  the ‘1’ position, to be ready for the next 
sheet of paper. 
2.12.5  PUNCH HOPPER MECHANISM 
 
The punchouts fall from the punch unit into the punch hopper [A].  
						

							Punch Unit 
B793 60  SM 
The punch hopper full sensor [B] does the following: 
ƒ  Signals that the hopper is full when it detects the top of the stack of punchouts that 
have collected in the hopper. 
ƒ  Detects when the punch hopper is set properly. 
  
						

							 
PAPER FEED UNIT B800 
B800  PAPER FEED UNIT PB3000 
Page Date  Added/Updated/New 
      None 
 
  
						

							 
SM i B800 
PAPER FEED UNIT B800 
TABLE OF CONTENTS 
1. REPLACEMENT AND ADJUSTMENT ............................................ 1 
1.1  REAR CO VER ........................................................................\
...................... 1  
1.2  MOTORS AND  CLUTCHES ........................................................................\
. 2  
1.2.1  LIFT MOTORS ........................................................................\
............. 2  
1.2.2  UPPER AND LOWER PAPER  FEED CLUTCHES .............................. 2  
1.2.3  PAPER FEED  MOTOR ........................................................................\
 3  
1.3  MAIN BOARD ........................................................................\
....................... 4  
1.4  PAPER FEED  UNIT ........................................................................\
.............. 5  
1.5  PICK-UP, PAPER FEED AN D SEPARATION ROLLERS............................. 6  
1.6  LIFT, PAPER END, A ND RELAY SENSORS ............................................... 7  
2. DETAILED DESCRIPTIONS ............................................................ 8 
2.1  COMPONENT  LAYOUT ........................................................................\
....... 8  
2.1.1  MECHANICAL COMPON ENT LAYOUT .............................................. 8  
2.1.2  ELECTRICAL COMP ONENT LAYOUT ............................................... 9  
2.2  PAPER FE ED ........................................................................\
..................... 10  
2.3  PAPER SIZE  DETECTION ........................................................................\
. 11  
2.4  REVERSE ROLLER AND PICK -UP ROLLER RELEASE ........................... 12  
2.5  PAPER LIFT ........................................................................\
....................... 13  
2.6  PAPER HEIGHT AND  END DETECTION................................................... 14  
2.6.1  PAPER HEIGHT  DETECTION........................................................... 14  
2.6.2  PAPER END AND BO TTOM PLATE ................................................. 15  
  
						

							 
 
Read This First 
Safety and Symbols 
Replacement Procedure Safety 
 
ƒ  Turn off the main power switch and unplug the machine before beginning any of 
the replacement procedures in this manual. 
  
Symbols Used in this Manual 
This manual uses the following symbols. 
: See or Refer to 
: Screws 
: Connector 
: Clip ring 
: E-ring