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Ricoh B230 Service Manual

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    							Original Feed Drive 
    SM 9 B789 
    B789 
     
    3.  Pick-up solenoid [B] (
     x 2,  x 1) 
    1.4.3 INVERTER SOLENOID 
     
    1.  Rear cover (see Rear Cover) 
    2.  Harness guide (see Pick-up Solenoid) 
    3.  Inverter solenoid [A] (
     x 2,  x 1,  x 1, gear x 1, gear cover x 1)  
    						
    							Original Feed Drive 
    B789 10  SM 
    1.4.4 FEED CLUTCH 
     
    1.  Rear cover (see Rear Cover) 
    2.  Harness guide (see Pick-up Solenoid) 
    3.  Bracket [A] (
     x 2,  x 3,  x 1, bushing x 1, spring x 1) 
     
    4.  Slide the bracket. 
    5.  Feed clutch [B] (
     x 1)  
    						
    							Original Feed Drive 
    SM 11 B789 
    B789 
    1.4.5 TRANSPORT MOTOR 
     
    1.  Rear cover (see Rear Cover) 
    2.  Harness guide (see Pick-up Solenoid) 
    3.  Left cover sensor with bracket [A] (
     x 1,  x 1) 
    4.  Transport motor with bracket [B] (
     x 2,  x 1, spring x 1) 
    5.  Transport motor [C] (
     x 2)  
    						
    							Component Layout 
    B789 12  SM 
    2. DETAILED DESCRIPTIONS 
    2.1 COMPONENT LAYOUT 
    2.1.1  MECHANICAL COMPONENT LAYOUT 
     
     
    1. Separation Roller 
    2. Paper Feed Belt 
    3. Pick-up Roller 
    4. Original Trailing Edge Sensor 
    5. Original Tray 
    6. Original Length Sensor 1 
    7. Original Length Sensor 2 
    8. Original Length Sensor 3 
    9. Inverter Roller 10. Junction Gate 
    11. Exit Roller 
    12. Original Exit Sensor 
    13. Transport Roller 
    14. Registration Roller 
    15. Registration Sensor 
    16. Skew Correction Roller 
    17. Skew Correction Sensor 
      
    						
    							Component Layout 
    SM 13 B789 
    B789 
    2.1.2   ELECTRICAL COMPONENT LAYOUT 
    Sensors 
     
    1. Original Width Sensor 
    2. Skew Correction Sensor 
    3. Registration Sensor 
    4. Cover Sensor  
    5. Original Set Sensor 
    6. Exit Sensor 
    7. Original Sensor 
    8. Original Length Sensor 
    9. DF Position Sensor  
    						
    							Component Layout 
    B789 14  SM 
    Drive Components 
     
    1. Transport Motor 
    2. Feed Clutch 
    3. Pick-up Solenoid 
    4. Inverter Solenoid 
    5. Feed Motor 
    6. Main Board 
    Electrical Component Descriptions 
    Symbol Name Function Index No.
    Motors 
    M1 Feed Drives the feed belt, separation, pick-up, and 
    reverse table rollers. 5 
    M2  Transport  Drives the transport and exit rollers  1 
          
    Sensors 
    S9  DF Position  Detects whether the DF is lifted or not.  9 
    S5 Skew Correction Detects the leading edge of the original to 
    turn off the DF feed and transport motors. 2 
    S8 Registration Detects the original exposure timing, and 
    checks for original misfeeds. 3 
    S10 Cover Sensor Detects whether the feed-in cover is opened 
    or not. 4  
    						
    							Component Layout 
    SM 15 B789 
    B789 
    S1 Original Width 
    Sensor - S Detects the original width - S.  1 
    S2 Original Width 
    Sensor - M Detects the original width - M.  1 
    S3 Original Width 
    Sensor - L Detects the original width - L.  1 
    S4 Original Width 
    Sensor - LL Detects the original width - LL.  1 
    S14 Original Length - 
    S Detects the original length - S.  8 
    S13 Original Length - 
    M Detects the original length - M.  8 
    S12 Original Length - 
    L Detects the original length - L.  8 
    S7  Original Set  Detects if an original is on the feed table.  5 
    S6  Original Exit  Detects the leading edge of the original to 
    turn on the junction gate solenoid and checks 
    for original misfeeds. 
    Detects the trailing edge of the original to turn 
    off the transport and feed motor and junction 
    gate solenoid. 
    In single-sided mode, used to detect original 
    misfeeds. 6 
    S11 Original  Detects the trailing edge of the last original to 
    stop copy paper feed and to turn off the 
    transport motor, and checks for original 
    misfeeds. 7 
          
    Solenoids 
    SOL1 Pick-up Controls the up-down movement of the 
    original table. 3 
    SOL2  Stamp  Energizes the stamper to mark the original.   
    SOL3  Junction Gate  Opens and closes the junction gate.  4 
          
    Magnetic Clutches 
    MC1 Feed Drives the feed belt, separation, pick-up, and 
    skew correction rollers 5 
           
    						
    							Component Layout 
    B789 16  SM 
    PCBs 
    PCB1 Main Interfaces the sensor signals with the copier, 
    and transfers the magnetic clutch, solenoid 
    and motor drive signals from the copier. 6 
          
     
    2.1.3 DRIVE LAYOUT 
     
     
    1. Feed Motor 
    2. Pick-up Roller 
    3. Separation Roller 
    4. Feed Belt 
    5. Skew Correction Roller 
    6. Feed Clutch 
    7. Transport Motor 
    8. Exit Roller  
    9. Registration Roller 
     
    ƒ  Feed Motor: Drives the feed belt, separation, pick-up, and skew correction rollers. 
    ƒ  Transport Motor: Drives the registration and exit rollers.  
    						
    							Basic Operation 
    SM 17 B789 
    B789 
    2.2 BASIC OPERATION 
    2.2.1  ORIGINAL SET AND SIZE DETECTION 
     
    The original set sensor [A] detects if the original is set or not. The original sensor [B] 
    detects if the original is on the original tray or not (this lets the machine know as early as 
    possible, whether there is another original on the tray). 
    The original size detection mechanism consists of the four original width sensors ([F]: 
    Width Sensor S, [G]: Width Sensor M, [H] Width Sensor L, [I]: Width Sensor LL) and three 
    original length sensors ([C]: Length Sensor S, [D]: Length Sensor M, [E]: Length Sensor L). 
    Based on the combined output of the length sensors and the width sensors, the machine 
    can detect the size of the original. This integrated detection mechanism is detailed in the 
    table below. 
    Width Sensor Length Sensor Area 
    Size 
    S M L LL S M L LT A/B
    A3/SEF (297 x 420)  ON ON ON ON ON ON ON O  O 
    B4/SEF (257 x 364)  ON  ON  -  -  ON  ON  ON  -  O 
    A4/SEF (210 x 297)  ON  -  -  -  ON  ON  -  O  O 
    A4/LEF (297 x 210)  ON  ON  ON  ON  -  -  -  O  O 
    B5/SEF (182 x 257)  -  -  -  -  ON  -  -  -  O 
    B5/LEF (257 x 182)   ON  ON  -  -  -  -  -  -  O 
    A5/SEF (148 x 210)  - - - - - - - - O 
    A5/LEF (210 x 148)   ON  -  -  -  -  -  -  -  O 
    11 x 17/SEF (DLT)  ON  ON  ON  -  ON  ON  ON  O1 O5  
    						
    							Basic Operation 
    B789 18  SM 
    11 x 15/SEF  ON ON ON  -  ON ON ON 1 - 
    10 x 14/SEF   ON  ON  -  -  ON  ON  ON  O  - 
    8.5 x 14/SEF (LG)  ON  -  -  -  ON  ON  ON  O2 - 
    8.5 x 13/SEF (F4)  ON  -  -  -  ON  ON  ON 2 O 
    8.25 x 13/SEF   ON        ON  ON  ON  -  - 
    8 x 13/SEF (F)  ON  -  -  -  ON  ON  ON  -  - 
    8.5 x 11/SEF (LT)  ON  -  -  -  ON  -  -  O3 O6 
    8.5 x 11/LEF (LT)  ON  ON  ON  -  -  -  -  O4 O7 
    7.25 x 10.5/SEF (US 
    EXE) ON -  -  - ON -  - O - 
    10.5 x 7.25/SEF (US 
    EXE) ON ON ON  -  -  -  - 4 - 
    10 x 8/SEF   ON  -  -  -  ON  -  - 3 - 
    5.5 x 8.5/SEF (HLT)  - - - - - - - O - 
    5.5 x 8.5/LEF (HLT)  ON - - - - - - O - 
    267 mm x 390 mm  ON  ON  ON  -  ON  ON  ON  - 5 
    195 mm x 267 mm  ON  -  -  -  ON  -  -  - 6 
    267 mm x 195 mm  ON  ON  ON  -  -  -  -  - 7 
     
    Symbol 
    O: Yes (Default), 
    : Yes (Can select this with SP mode), ON: Paper present, LT: North 
    America, A/B:  Europe, Asia 
     
    ƒ For O/
     mark, which has superscripted number, it is possible to change the 
    original detection size with SP6-016. For example, instead of LT (O
    3), the 
    machine can be set up to detect 10” x 8” (
    3). 
    ƒ  The F size can be selected with SP5-126. The default is 8.5 x 13 
    ƒ  The machine cannot detect more than one size of original in the same job. 
    2.2.2  MIXED ORIGINAL SIZE MODE 
    This section explains what happens when the user selects mixed original size mode. 
    Because this ARDF is a sheet-through document feeder, the method for original document 
    width detection is the same as when the originals are the same size, but the document 
    length detection method is different. Therefore, the scanning speed is slightly slower.  
    						
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