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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.

Lower Exhaust Fans

1. Rear cover (

2. Lower exhaust fans [A] ( x 2 each,

x 1)

Reinstalling the lower exhaust fans
Make sure that the decals on the fans face the rear side when reinstalling the lower exhaust fans.

Cooling and Exhaust Fans

21

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Summary of Contents for M379

Page 1: ...Buffer Pass Unit Machine Code M379 Service Manual 31 March 2009 Subject to change...

Page 2: ......

Page 3: ...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 not...

Page 4: ...d advice about how to best service the machine General Safety Instructions For your safety please read this manual carefully before you use this product Keep this manual handy for future reference Saf...

Page 5: ...achine Work carefully when lifting or moving the machine If the machine is heavy two or more customer engineers may be required to prevent injuries muscle strains spinal injuries etc or damage to the...

Page 6: ...ets etc removed for installation have been removed and that no tools remain inside the machine This also ensures that all release interlock switches have been restored to normal operation Never use yo...

Page 7: ...g nauseous Switch the machine off unplug it and allow it to cool before doing preventive maintenance To avoid fire or explosion never use an organic cleaner near any part that generates heat Wash your...

Page 8: ...er use an extension cord When you disconnect the power plug from the power source always pull on the plug not the cable After Installation Servicing Disposal of Used Items Never incinerate used toner...

Page 9: ...touching those components with your bare hands 7 To prevent a fire or explosion keep the machine away from flammable liquids gases and aerosols Observance of Electrical Safety Standards 1 Themachinean...

Page 10: ...ety 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 Drive Components 15 Drive Motor 15 Drive...

Page 11: ...Drive Layout 34 Paper Path 36 Paper Cooling 37 9...

Page 12: ...10...

Page 13: ...he 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 p...

Page 14: ...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 1 Replacement and Adjustment 12 1...

Page 15: ...Right Cover 1 Right cover A x 6 Left Cover 1 Left cover A x 6 Operation Panel 1 Top Cover p 11 Exterior Covers 13 1...

Page 16: ...2 Operation Panel x 2 x 1 1 Replacement and Adjustment 14 1...

Page 17: ...been docked to the mainframe Otherwise the buffer pass unit can fall down Drive Motor 1 Rear cover p 11 2 Controller board bracket p 27 3 Drive Motor A x 4 x 1 There are two drive motors right and lef...

Page 18: ...ront door 2 Turn the C2 lever completely counterclockwise 3 Pull out the paper path unit slightly p 18 Lower Cooling Fans 4 Install the drive motor base x 3 5 Push the paper path unit completely and c...

Page 19: ...inframe 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 Cooling Fans U...

Page 20: ...pper 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: ...er 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 It is because the weight of the paper path unit is heavier than that of the buffer...

Page 22: ...ooling 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 Rear cov...

Page 23: ...upside down and face the rear side when reinstalling the upper exhaust fans Lower Exhaust Fans 1 Rear cover p 11 2 Lower exhaust fans A x 2 each x 1 Reinstalling the lower exhaust fans Make sure that...

Page 24: ...ing 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 Transport Sensors 1 Open the front...

Page 25: ...4 C2 handle A B x 1 5 Front inner cover A x 6 Sensors and Switches 23 1...

Page 26: ...3 Transport Sensor 3 4 Transport Sensor 4 5 Transport Sensor 5 6 Transport Sensor 6 7 Transport Sensor 7 8 Transport Sensor 8 7 Transport sensor A hook x 4 x 1 Switches Paper Path Unit Set Switch 1 R...

Page 27: ...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 Front door switch assembly A x 2 x 2 x 1 Senso...

Page 28: ...6 Front door switch bracket cover A x 2 x 1 7 Front door switch bracket B 1 Replacement and Adjustment 26 1...

Page 29: ...e 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 Controller Board Con...

Page 30: ...Controller Board 1 Rear cover p 11 2 Controller board x 11 x 2 hook A x 4 PSU Removing the PSU 1 Rear cover p 11 1 Replacement and Adjustment 28 1...

Page 31: ...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 Electronic Components 29...

Page 32: ...lacement devices not designed for use with the machine could lead to a fire and personal injuries Fuse Rating 115 V 210 to 230V FU1 15A 125Vac 8A 250125Vac FU2 8A 125125Vac T4A L 250125Vac SRB 1 Rear...

Page 33: ...2 Interface cable A Electronic Components 31 1...

Page 34: ...1 Replacement and Adjustment 32 1...

Page 35: ...2 Details Overview Components Layout 33 2...

Page 36: ...ight 6 Transport sensor 2 7 Transport sensor 3 8 Transport sensor 4 9 Lower cooling fans 10 Front door switch 11 Transport sensor 5 12 Transport sensor 6 13 Lower exhaust fans 14 Transport sensor 7 15...

Page 37: ...2 Timing belt right side 3 Drive motor right 4 Drive motor left 5 Timing belt left side 6 Paper transport left knob Overview 35 2...

Page 38: ...rs C at the right paper path area and feeds a sheet of paper to the left paper path area The drive motor left D turns on 1 05 seconds after the drive motor right has turned on and then drives six tran...

Page 39: ...air around the upper area is expelled to the outside by the upper exhaust fans A Also the upper cooling fans C draw air in the buffer pass unit from the outside and then move air F to the center area...

Page 40: ...2 Details 38 2...

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