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Ricoh Mp C3000 Service Manual

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    							Electrical Components 
SM 7 B789 
B789 
ARDF DF3000 
( x 1,  x 1) 
1.3.5  STAMP SOLENOID AND ORIGINAL EXIT SENSOR 
 
1.  Open the ARDF. 
2.  Remove the left edge of the platen sheet. 
3.  Release the hook [A]. 
4.  Open the original exit guide plate [B] 
5.  Stamp solenoid [C] (
 x 1,  x 1) 
6.  Original exit sensor [D] (
 x 1, hook x 1)
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    							Original Feed Drive 
B789 8  SM 
1.4  ORIGINAL FEED DRIVE 
1.4.1 FEED MOTOR 
 
1.  Rear cover (see Rear Cover) 
2.  Feed motor with bracket [A] (
 x 2,  x 1, spring x 1) 
3.  Feed motor [B] (
 x 2) 
1.4.2 PICK-UP SOLENOID 
 
1.  Rear cover (see Rear Cover) 
2.  Harness guide [A] (all 
s)
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    							Original Feed Drive 
SM 9 B789 
B789 
ARDF DF3000 
 
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)
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    							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)
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    							Original Feed Drive 
SM 11 B789 
B789 
ARDF DF3000 
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)
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    							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
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    							Component Layout 
SM 13 B789 
B789 
ARDF DF3000 
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
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    							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
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    							Component Layout 
SM 15 B789 
B789 
ARDF DF3000 
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
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    							Component Layout 
B789 16  SM 
PCBs 
PCB1 Main  Interfaces the sensor signals with the copier, 
and transfers the magnet
ic 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, separa tion, pick-up, and skew correction rollers. 
ƒ  Transport Motor: Drives the registration and exit rollers.
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