Related Manuals for Ricoh M379
Summary of Contents for Ricoh M379
- Page 1 Buffer Pass Unit Machine Code: M379 Service Manual 31 March, 2009 Subject to change...
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Page 3: Safety, Conventions, Trademarks
Safety, Conventions, Trademarks Conventions Symbol What it means Core Tech Manual Screw Connector E-ring C-ring Harness clamp Flexible Film Cable The notations "SEF" and "LEF" describe the direction of paper feed. The arrows indicate the direction of paper feed. Warnings, Cautions, Notes In this manual, the following important symbols and notations are used. -
Page 4: General Safety Instructions
• A Caution indicates a potentially hazardous situation. Failure to obey a Caution could result in minor or moderate injury or damage to the machine or other property. • Obey these guidelines to avoid problems such as misfeeds, damage to originals, loss of valuable data and to prevent damage to the machine •... -
Page 5: Responsibilities Of The Customer Engineer
Responsibilities of the Customer Engineer Customer Engineer Maintenance shall be done only by trained customer engineers who have completed service training for the machine and all optional devices designed for use with the machine. Reference Material for Maintenance • Maintenance shall be done using the special tools and procedures prescribed for maintenance of the machine described in the reference materials (service manuals, technical bulletins, operating instructions, and safety guidelines for customer engineers). -
Page 6: During Maintenance
• Before you do any checks or adjustments after turning the machine off, work carefully to avoid injury. After removing covers or opening the machine to do checks or adjustments, never touch electrical components or moving parts (gears, timing belts, etc.). •... - Page 7 Safety Devices • Never remove any safety device unless it requires replacement. Always replace safety devices immediately. • Never do any procedure that defeats the function of any safety device. Modification or removal of a safety device (fuse, switch, etc.) could lead to a fire and personal injury. Always test the operation of the machine to ensure that it is operating normally and safely after removal and replacement of any safety device.
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Page 8: After Installation, Servicing
• Inspect the length of the power cord for cuts or other damage. Replace the power cord if necessary. A frayed or otherwise damaged power cord can cause a short circuit which could lead to a fire or personal injury from electrical shock. •... -
Page 9: Safety Instructions For This Machine
Safety Instructions for this Machine Prevention of Physical Injury 1. Before disassembling or assembling parts of the machine and peripherals, make sure that the machine and peripheral power cords are unplugged. 2. The plug should be near the machine and easily accessible. 3. -
Page 10: Table Of Contents
TABLE OF CONTENTS Safety, Conventions, Trademarks........................1 Conventions..............................1 Warnings, Cautions, Notes...........................1 General Safety Instructions..........................2 Responsibilities of the Customer Engineer....................3 Before Installation, Maintenance........................3 During Maintenance............................4 After Installation, Servicing..........................6 Safety Instructions for this Machine.......................7 1. Replacement and Adjustment Exterior Covers..............................11 Rear Cover..............................11 Top Cover..............................11 Right Cover..............................13 Left Cover..............................13 Operation Panel............................13... - Page 11 Drive Layout..............................34 Paper Path.................................36 Paper Cooling..............................37...
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Page 13: Replacement And Adjustment
1. Replacement and Adjustment Exterior Covers • Disconnect the power cord from the inlet of the buffer pass unit and unplug the mainframe before starting the following procedure. • Do not pull out the buffer pass unit drawer until this unit has been docked to the mainframe. Otherwise, the buffer pass unit can fall down. - Page 14 1. Replacement and Adjustment 2. Remove two screws on the front upper side ( x 2) 3. Rear cover ( p.11) 4. Push the top cover [A] to the front side, and then remove it.
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Page 15: Right Cover
Exterior Covers Right Cover 1. Right cover [A] ( x 6) Left Cover 1. Left cover [A] ( x 6) Operation Panel 1. Top Cover ( p.11) - Page 16 1. Replacement and Adjustment 2. Operation Panel ( x 2, x 1)
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Page 17: Drive Components
Drive Components Drive Components • Disconnect the power cord from the inlet of the buffer pass unit and unplug the mainframe before starting the following procedure. • Do not pull out the buffer pass unit drawer until this unit has been docked to the mainframe. Otherwise, the buffer pass unit can fall down. - Page 18 1. Replacement and Adjustment 3. Drive Motor Bases [A] ( x 3, x 1 each) Reinstall the Drive Motor Base 1. Open the front door. 2. Turn the C2 lever completely counterclockwise. 3. Pull out the paper path unit slightly ( p.18 "Lower Cooling Fans").
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Page 19: Cooling And Exhaust Fans
Cooling and Exhaust Fans Cooling and Exhaust Fans • Disconnect the power cord from the inlet of the buffer pass unit and unplug the mainframe before starting the following procedure. • Do not pull out the buffer pass unit drawer until this unit has been docked to the mainframe. Otherwise, the buffer pass unit can fall down. - Page 20 1. Replacement and Adjustment 3. Disconnect the harness [A] ( x 1). 4. Pull out the upper cooling fan unit [A]. 5. Upper cooling fan bracket [A] ( x 1, x 2, x 2) 6. Upper cooling fans [B] ( x 2 each) Reinstalling the upper cooling fans Make sure that the decals on the fans face downward when reinstalling the upper cooling fans.
- Page 21 Cooling and Exhaust Fans 2. Turn the C2 handle [A] counter-clockwise. 3. Pull out the paper path unit [A] • Take care to pull out the paper path unit so that the buffer pass unit does not fall down to the front.
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Page 22: Exhaust Fans
1. Replacement and Adjustment 5. Lower cooling fan cover [A] ( x 2) 6. Lower cooling fans [A] ( x 2 each, x 2, x 2) Reinstalling the lower cooling fans Make sure that the decals on the fans face upward when reinstalling the lower cooling fans. Exhaust Fans Upper Exhaust Fans 1. - Page 23 Cooling and Exhaust Fans 2. Upper exhaust fans [A] ( x 2 each, x 1) Reinstalling the upper exhaust fans Make sure that the decals on the fans are upside down and face the rear side when reinstalling the upper exhaust fans.
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Page 24: Sensors And Switches
1. Replacement and Adjustment Sensors and Switches • Disconnect the power cord from the inlet of the buffer pass unit and unplug the mainframe before starting the following procedure. • Do not pull out the buffer pass unit drawer until this unit has been docked to the mainframe. Otherwise, the buffer pass unit can fall down. - Page 25 Sensors and Switches 4. C2 handle [A] ( [B] x 1) 5. Front inner cover [A] ( x 6)
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Page 26: Switches
1. Replacement and Adjustment 6. Remove sensors bracket (each • [1] Transport Sensor 1 • [2] Transport Sensor 2 • [3] Transport Sensor 3 • [4] Transport Sensor 4 • [5] Transport Sensor 5 • [6] Transport Sensor 6 • [7] Transport Sensor 7 •... - Page 27 Sensors and Switches 3. Paper path unit set switch [A] ( x3) Front Door Switch 1. Left cover ( p.13) 2. Open the front door. 3. Pull out the paper path unit. 4. Lower cooling fan cover ( p.18 "Lower Cooling Fans") 5.
- Page 28 1. Replacement and Adjustment 6. Front door switch bracket cover [A] ( x 2, x 1) 7. Front door switch bracket [B].
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Page 29: Electronic Components
Electronic Components Electronic Components • Disconnect the power cord from the inlet of the buffer pass unit and unplug the mainframe before starting the following procedure. • Do not pull out the buffer pass unit drawer until this unit has been docked to the mainframe. Otherwise, the buffer pass unit can fall down. -
Page 30: Psu
1. Replacement and Adjustment Controller Board 1. Rear cover ( p.11) 2. Controller board ( x 11, x 2, hook [A] x 4) Removing the PSU 1. Rear cover ( p.11) - Page 31 Electronic Components 2. PSU bracket ( x 4, x 6, x 2) Reinstalling the PSU Make sure that the power connectors should be connected correctly. • Upper [A]: White or blue connector. • Lower [B]: Black or brown connector.
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Page 32: Srb
1. Replacement and Adjustment PSU Fuse Rating • For replacements, use only the correct fuses rated for use with the machine. Using replacement devices not designed for use with the machine could lead to a fire and personal injuries. Rating Fuse 115 V 210 to 230V... - Page 33 Electronic Components 2. Interface cable [A]...
- Page 34 1. Replacement and Adjustment...
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Page 35: Details
2. Details Overview Components Layout... - Page 36 2. Details 1. Upper cooling fans 9. Lower cooling fans 2. Upper exhaust fan 10. Front door switch 3. Transport roller 11. Transport sensor 5 4. Transport sensor 1 12. Transport sensor 6 5. Drive motor: right 13. Lower exhaust fans 6.
- Page 37 Overview 2. Timing belt: right side 3. Drive motor right 4. Drive motor left 5. Timing belt: left side 6. Paper transport left knob...
- Page 38 2. Details Paper Path A sheet of paper is fed to the entrance [A] of the buffer pass unit from the mainframe. The drive motor right [B] turns on 1.05 seconds after the mainframe has received a print job or copy job, and then drives six transport rollers [C] at the right paper path area and feeds a sheet of paper to the left paper path area.
- Page 39 Paper Cooling Paper Cooling There two sets of exhaust fans and two sets of cooling fans in the buffer pass unit. These fans turn on in 0.1 seconds interval as follows below after the mainframe has turned on or received a printer job or copy job. •...
- Page 40 2. Details...