Ricoh B230 Service Manual
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SM i B790 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 B790 ii SM B790 TABLE OF CONTENTS Read This First............................................................................................................ i Safety and Symbols ......................................................................................... i Replacement Procedure Safety .................................................................... i Symbols Used in this Manual ........................................................................i Table of Contents...................................................................................................... ii 1. Replacement and Adjustment.................................................................... 1 Paper Sensor Removal ................................................................................... 1 1-Bin Tray Exit Sensor and LED Control Board............................................... 1 2. Detailed Descriptions .................................................................3 Component Layout .......................................................................................... 3 Mechanical Component Layout .................................................................... 3 Electrical Component Layout ....................................................................... 3 Electrical Component Descriptions.................................................................. 4 Basic Operation ............................................................................................... 5
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)
1-Bin Tray Exit Sensor and LED Control Board B790 2 SM 5. LED control board [C] ( x 1, x 2)
Component Layout SM 3 B790 B790 1 Bin Tray 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 B790 4 SM 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 SM 5 B790 B790 1 Bin Tray 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 appropriate 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 the tray. The paper sensor turns on when there is paper in the tray, and the paper indicator turns on. The tray can be opened for easier jam removal by swinging the tray to the left.