Ricoh A571 Service Manual
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Ricoh A571 Service Manual

Ricoh A571 Service Manual

Roll feeder
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ROLL FEEDER
(Machine Code: A571)

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Summary of Contents for Ricoh A571

  • Page 1 ROLL FEEDER (Machine Code: A571)

  • Page 2: Specifications

    31 October 1994 SPECIFICATIONS 1. SPECIFICATIONS Roll Paper Size: Width: 210 mm to 914 mm, 8 " to 36" Length: 150 meters Diameter: Less than φ170 mm Cut Size: –Preset Cut: 1189 mm, 841 mm, 594 mm, 420 mm, 297 mm 48", 36", 24", 18", 12"...

  • Page 3: Mechanical Component And Drive Layout

    MECHANICAL COMPONENT AND DRIVE LAYOUT 31 October 1994 2. MECHANICAL COMPONENT AND DRIVE LAYOUT 1. Paper Feed Motor 5. Paper Feed Rollers 2. Idle Pulley 6. Paper Roll Spool 3. Timing Belt 7. Paper Roll 4. Cutter Motor 8. Cutter Unit...

  • Page 4: Electrical Component Descriptions

    31 October 1994 ELECTRICAL COMPONENT DESCRIPTIONS 3. ELECTRICAL COMPONENT DESCRIPTIONS The index numbers refer to the electrical component layout on the reverse side of the Point to Point (Water proof paper). Name Function Index No. Motors Paper Feed Drives all mechanical components except the cutter unit (DC Stepper Motor).

  • Page 5: Mechanical Operation

    MECHANICAL OPERATION 31 October 1994 4. MECHANICAL OPERATION 4.1 BASIC OPERATION The paper feed rollers [A], which are turned by the paper feed motor, feed paper from the paper roll [B] through the cutter unit [C] to the paper leading edge sensor [D] according to the signal from the copier.
  • Page 6 31 October 1994 MECHANICAL OPERATION After the leading edge of the paper reaches the exit rollers [A], the paper is directed to the copier registration roller [B]. The registration roller stops rotating after the registration sensor [C] detects the leading edge of the copy paper.

  • Page 7: Cutter Unit Opening And Closing Mechanism

    MECHANICAL OPERATION 31 October 1994 4.2 CUTTER UNIT OPENING AND CLOSING MECHANISM The gear [A] from the paper feed motor disengages from the cutter unit gears [B] when the roll cutter unit is unlocked from the lower position and lifted up. At this time, the cutter unit is locked at the upper position by the lock lever [C], and the wheel [D] on the right side can be rotated manually to position the leading edge of the roll paper.

  • Page 8: Cutter Operation

    31 October 1994 MECHANICAL OPERATION 4.3 CUTTER OPERATION The cutter unit uses a sliding rotary cutting blade [A] which is pulled past a fixed blade by a drive wire. The rotary cutting blade allows the cutter unit to cut paper in both directions. There are home position switches [B] at both ends of the cutter unit.

  • Page 9: Service Tables

    SERVICE TABLES 31 October 1994 5. SERVICE TABLES 5.1 TEST POINTS Function TP No. TP903 (24 V) TP901 (5 V) TP902 5.2 BLOWN FUSE CONDITION Component Unit Symptom F901 (250V/1.0A) RF Main board The AC line for the R/F antihumidity heaters is cut.

  • Page 10: Installation Procedure

    31 October 1994 INSTALLATION PROCEDURE 6. INSTALLATION PROCEDURE Roll Feeder (A571) CAUTION: Unplug the copier power cord before starting the following procedure. Check the accessories and their quantities according to the following list: Harness Cover ................2 pcs Angle Bracket ................1 pc Spacer ..................1 pc...
  • Page 11 INSTALLATION PROCEDURE 31 October 1994 1. Lower the feet [A] so that the table does not move while the roll feeder is being installed on the table and the copier. NOTE: Do not place the roll feeder unit [B] onto the floor roughly, to prevent the left and right covers from being damaged.
  • Page 12 31 October 1994 INSTALLATION PROCEDURE 5. Open the copier paper path section and remove the copier left lower cover [A] (2 screws), lower right front cover [B] (2 screws), lower right middle cover [C], toner collection bottle [D], and rear cover [E] (2 screws). 6.
  • Page 13 INSTALLATION PROCEDURE 31 October 1994 NOTE: Take care not to drop the manual feed table when removing the bracket [A]. 8. Remove the lower front cover [B] (2 screws), reinforcement plate [C] (1 screw), bracket [A] (4 screws) (which is changed by the harness), and the manual feed table [D].
  • Page 14 31 October 1994 INSTALLATION PROCEDURE 9. Mount the roll feeder unit on the copier (hook the mounting arms [A] on both sides into the mounting rail [B]). NOTE: Lift the unit by holding the plate [C] just under the size marks. 10.
  • Page 15 INSTALLATION PROCEDURE 31 October 1994 NOTE: To ensure grounding, tighten the screws for the ground wire until the spring washers [A] are flattened. 12. Secure the grounding wire [B] (1 screw with spring washer) to the inside of the table. 13.
  • Page 16 31 October 1994 INSTALLATION PROCEDURE Length PRG. 1100 PRG. Temperature NORMAL HIGH (VELLUM) LOW (FILM) 18. Plug in the power supply cord and turn on the main switch. 19. Press the following keys on the operation panel: Clear Modes key [A] + key [B] - key [C] Clear/Stop key [D]...

  • Page 17: Replacement And Adjustment

    REPLACEMENT AND ADJUSTMENT 31 October 1994 7. REPLACEMENT AND ADJUSTMENT 7.1 EXTERIOR COVER REMOVAL 7.1.1 Front Cover Removal 1. Remove the front cover [A] (2 screws). NOTE: If the screw holes for the front cover become worn by the screws, extra holes are provided next to the original screw holes.

  • Page 18: Cutter Unit Removal

    31 October 1994 REPLACEMENT AND ADJUSTMENT 7.2 CUTTER UNIT REMOVAL 1. Remove the roll feeder left and right covers. 2. Remove the 4 screws [A] of the cutter unit. 3. Take out the cutter unit [B] (1 connector [C]). NOTE: When reinstalling the cutter unit, attach the cutter unit cover [D] with the cutter unit.

  • Page 19: Paper Feed Roller Replacement

    REPLACEMENT AND ADJUSTMENT 31 October 1994 7.3 PAPER FEED ROLLER REPLACEMENT [H] [G] 1. Remove the cutter unit. 2. Unlock and lift the paper feed roller unit [A] using the release lever [B]. 3. Remove the release lock lever [B] (2 screws). 4.

  • Page 20: Paper Feed Motor Timing Belt Tension Adjustment

    31 October 1994 REPLACEMENT AND ADJUSTMENT 7.4 PAPER FEED MOTOR TIMING BELT TENSION ADJUSTMENT If the timing belt tension for the paper feed motor is not correct, the paper cut length varies for each copy paper. Readjust the timing belt tension for the paper feed if this occurs.

  • Page 21: Cut Length Adjustment

    REPLACEMENT AND ADJUSTMENT 31 October 1994 7.5 CUT LENGTH ADJUSTMENT The cut length adjustment should be done when the roll feeder is installed to correct cutting errors. The cut error correction data is determined in the factory without the copier installed. The cut length varies depending on the copier on which it is installed and/or paper type used.

  • Page 22: Roll Feed Paper Skew Adjustment

    31 October 1994 REPLACEMENT AND ADJUSTMENT 7.6 ROLL FEED PAPER SKEW ADJUSTMENT 1. Mark a line [A] on the exposure glass [B]. 2. Make 594 x 1189 mm copies from the roll feeder unit. NOTE: 594 mm wide paper is easier to adjust than 841 mm wide paper. 3.

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