Ricoh Mp C3000 Service Manual

 
1 BIN TRAY B790 
B790  1 BIN TRAY BN3000 
Page Date  Added/Updated/New 
      None 
 
  

 
SM i B790 
1-BIN TRAY B790 
TABLE OF CONTENTS 
1. REPLACEMENT AND ADJUSTMENT ............................................ 1 
1.1  PAPER SENSOR  REMOVAL ....................................................................... 1  
1.2  1-BIN TRAY EXIT SENSOR AN D LED CONTROL BOARD......................... 1  
2. DETAILED DESCRIPTIONS ............................................................ 2 
2.1  COMPONENT  LAYOUT ........................................................................\
....... 2...

 
 
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  

Paper Sensor Removal 
SM 1 B790 
B790 
1 Bin Tray 
1.  REPLACEMENT AND ADJUSTMENT 
1.1 PAPER SENSOR REMOVAL 
 
1.  1-bin-tray 
2.  1-bin sorter unit [A] 
3.  Paper sensor [B] (
 x 1, hook x 3) 
 
1.2  1-BIN TRAY EXIT SENSOR AND LED CONTROL 
BOARD 
 
1.  1-bin tray 
2.  1-bin sorter unit 
3.  Sensor bracket [A] (
 x 1,  x 1). 
4.  Remove the 1-bin tray exit sensor [B] (
 x 1, hook x 4) 
5.  LED control board [C] (
 x 1,  x 2)  

Component Layout 
B790 2  SM 
2. DETAILED DESCRIPTIONS 
2.1 COMPONENT LAYOUT 
2.1.1  MECHANICAL COMPONENT LAYOUT 
 
1. Exit Roller 
2. Drive Gear 
3. Paper Tray 
4. Paper Sensor 
5. 1-Bin Tray Exit Sensor 
2.1.2  ELECTRICAL COMPONENT LAYOUT 
 
1. Paper Sensor 
2. LED Control Board 
3. 1-Bin Tray Exit Sensor  

Electrical Component Descriptions 
SM 3 B790 
B790 
1 Bin Tray 
2.2 ELECTRICAL COMPONENT DESCRIPTIONS 
 
Symbol Name Function Index No.
Sensors  
S1  Paper  Detects whether there is paper on the tray.   1 
S2  1-Bin Tray Exit  Detects a paper jam.   3 
PCB 
PCB1  LED Control 
Board  Indicates when there is paper in the tray.  
2 
  

Basic Operation 
B790 4  SM 
2.3 BASIC OPERATION 
At the appropriate time after the leading edge of the first sheet of copy paper reaches the 
copier’s registration roller, the junction gate solenoid turns on to switch the junction gate to 
direct the paper to the 1-bin paper tray. 
The junction gate solenoid turns off at the approp riate time after the paper is directed to 
the 1-bin paper tray. The main motor in the copier stops after the final sheet passes the 1-
bin tray exit sensor and arrives on...