Ricoh df70 Service Manual
AUTO REVERSE DOCUMENT FEEDER
(Machine Code: B351)
26 January, 2001 COVERS
1. REPLACEMENT AND ADJUSTMENT
1.1 COVERS
[B]
[A]
1. Front cover [A] (! x2)
2. Rear cover [B] (! x2)
3. Top cover [C] (! x1, " x2)
B351R110.WMF
[C]
[D]
[F]
[E]
B351R111.WMF
4. Original tray [D] (" x1, # x1)
5. Platen sheet [E] (Velcro pads)
6. Original exit tray [F] (! x2). Slide to the right and then pull out.
!
CAUTION
The hinge of the ARDF is spring-loaded and becomes much lighter with all the
covers removed. After removing all the covers, lay a heavy book on the front right
corner of the ARDF to prevent it from springing up unexpectedly.
B351-1
Peripherals
ORIGINAL FEED UNIT 26 January, 2001
1.2 ORIGINAL FEED UNIT
[A]
1. Open the top cover.
2. Original feed unit [A]
Press it toward you on its shaft to
release and lift out.
B351R101.WMF
1.3 ORIGINAL PICK-UP ROLLER
1. Original feed unit (☛ 1.2)
2. Pick-up roller [A] (# x1)
B351R102.WMF
[A]
B351-2
26 January, 2001 ORIGINAL FEED BELT
1.4 ORIGINAL FEED BELT
[B]
[A]
B351R103.WMF
[C]
[D]
B351R104.WMF
1. Original feed unit and original pick-up roller (☛ 1.2, 1.3)
2. Shaft [A] (# x1)
NOTE: Before removing the shaft, note carefully the positioning of the spring
[B]. This must be reset during re-installation.
3. Feed belt cover [C] (Timing belt, gear, shaft, springs x2).
NOTE: Do not lose the springs.
4. Original feed belt [D].
Peripherals
B351-3
SKEW CORRECTION/INTERVAL/ REGISTRATION/ORIGINAL WIDTH SENSORS 26 January, 2001
1.5 SKEW CORRECTION/INTERVAL/
REGISTRATION/ORIGINAL WIDTH SENSORS
[A]
[C]
[E]
[F]
B351R105.WMF
[B]
[D]
1. Open the top cover.
2. Upper original guide [A] (! x3).
3. Skew correction sensor [B] (" x1)
4. Interval sensor [C] (" x1)
5. Registration sensor [D] (" x1)
6. Original width sensor bracket [E] (! x1, " x4)
7. Original width sensors [F]
B351R106.WMF
B351-4
26 January, 2001 ORIGINAL LENGTH SENSORS
1.6 ORIGINAL LENGTH SENSORS
1. Raise the original table.
2. Lower cover of original tray [A] (! x4)
3. Original length sensor-1 [B] (" x1)
4. Original length sensor-2 [C] (" x1)
[B]
[C]
1.7 SEPARATION ROLLER
1. Original feed unit.(☛ 1.2)
2. Separation roller cover [A].
3. Separation roller [B] (# x1)
[B]
[A]
B351R107.WMF
[A]
B351R108.WMF
B351-5
Peripherals
INVERTER /ORIGINAL SET SENSORS 26 January, 2001
1.8 INVERTER /ORIGINAL SET SENSORS
1. Rear cover. (☛ 0)
2. Lower the original stopper [A] by
rotating the pick-up motor.
3. Original feed unit.(☛ 1.2)
4. Feed guide plate [B] (! x5)
NOTE: Raise the original tray before
you re-install the paper feed guide.
5. Separation roller, torque limiter (# x1)
(☛ 1.7)
6. Bracket [C] (! x1, " x1)
7. Inverter sensor [D] (! x1)
8. Original set sensor [E] (" x1)
[B]
[A]
[C]
[D]
[E]
B351R109.WMF
1.9 PICK-UP MOTOR/ORIGINAL STOPPER HP
SENSOR/PICK-UP HP SENSOR
1. Rear cover (☛ 0)
2. Pick-up motor [A] (" x1, ! x2, Timing
belt)
3. Sensor bracket [B] (" x2, ! x1)
4. Pick-up HP sensor [C]
5. Original stopper HP sensor [D]
[A]
[B]
[C]
[D]
B351R114.WMF
B351-6
26 January, 2001 SCANNER MOTOR AND INVERTER MOTOR
1.10 SCANNER MOTOR AND INVERTER MOTOR
[A]
B351R113.WMF
[B]
B351R112.WMF
1. Rear cover (☛ 0)
2. Pick-up roller assembly [A] (# x1, ! x3, " x3)
3. Motor bracket [B] (! x3, " x2, Timing belt x2)
4. Scanner motor [C] (! x2)
NOTE: To re-install the scanner motor, secure the motor after the motor
bracket has been installed.
[C]
[D]
Peripherals
5. Inverter motor [D] (! x2)
B351-7
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