Ricoh B832 Service Manual Download | Manualshive

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DETAILED DESCRIPTIONS

10 March 2006

B832-24

2.5 PAPER END DETECTION

The paper end sensor [A] detects the top sheet of the paper in the tray by
monitoring the reflected light. When the paper tray runs out of paper, the paper end
sensor does not receive the reflected light due to the cutout [B]. Then, the tray lift
motor rotates backwards 2 seconds to drop the tray bottom plate.

B832D933.WMF

[A]

[B]

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Summary of Contents for B832

Page 1: ...LCIT RT5000 Machine Code B832 ...

Page 2: ...IDE REGISTRATION ADJUSTMENT B832 14 1 9 ADJUSTING IMAGE POSITION SENSOR STRENGTH AND SIDE TO SIDE REGISTRATION B832 15 2 DETAILED DESCRIPTIONS B832 17 2 1 PAPER FEED B832 17 2 1 1 PAPER FEED ROLLERS B832 17 2 1 2 PAPER FEED MOTORS B832 18 2 1 3 PICK UP AND FEED B832 19 2 2 PAPER LIFT B832 20 2 2 1 TRAY DETECTION B832 20 2 2 2 LIFT MECHANISM B832 20 2 2 3 LIFT SENSOR B832 21 2 3 PAPER SIZE DETECTIO...

Page 3: ...D COVERS 10 March 2006 Tray Naming 1st Tray 2nd Tray Copier B234 B235 B236 3rd Tray 4th Tray 5th Tray LCT B832 or B834 6th Tray Bypass Tray B833 7th Tray B834 B832 B833 B234 235 236 B835 B660 B836 B830 B832I900 WMF ...

Page 4: ...Peripherals 1 REPLACEMENT AND ADJUSTMENT 1 1 FRONT DOOR AND COVERS A Top cover x 4 B Front door x 1 NOTE While lifting the top cover remove the snap ring and front door C Rear cover x 6 D Right cover x 6 E Paper slot cover x 2 B832R101 WMF C B D E A ...

Page 5: ...R COVER PAPER FEED UNIT Open the front door Remove right cover 1 1 Remove A Pull out tray and remove it x 4 B Knobs x3 x 1 each C Upper inner cover x2 D Knob x1 E Lower inner cover x1 F Paper feed unit x1 x2 B832R108 WMF B832R901 WMF B832R104 WMF A B C D E F ...

Page 6: ...lers are the same as pick up and separation rollers of the main machine These rollers are interchangeable 2 The feed rollers of the LCT and main machine are different because they are designed to rotate in opposite directions The feed rollers of the LCT and main machine are not interchangeable 3 Never touch the surface of the rollers with bare hands Clear the PM counters for the new rollers see Se...

Page 7: ...er feed motor and a grip motor The removal procedure is the same for each feed tray Remove Rear cover 1 1 A Motor unit x4 x2 B Springs x2 First loosen the screws x2 C Paper feed motor x2 D Grip motor x2 Reinstallation Attach the tension spring then tighten the screws to tighten the belts B832R109 WMF B832R109A WMF A C D B ...

Page 8: ...10 March 2006 REPLACEMENT AND ADJUSTMENT B832 5 Peripherals 1 4 2 6TH LIFT MOTOR Remove Rear cover 1 1 A 6th lift motor x2 x1 B832R109B WMF A ...

Page 9: ...ANSPORT MOTOR Remove Rear cover 1 1 A 4th Transport motor unit x 5 x 1 B Spring x1 First loosen screw x 1 C 4th transport motor x2 Timing belt x1 Reinstallation Be sure that the tension spring is connected then tighten the screw B832R109C WMF B832R109D WMF A C B ...

Page 10: ... 1 4 4 5TH TRANSPORT MOTOR Remove Rear cover 1 1 A Motor unit x4 x 1 B Spring x1 First loosen screw x 1 C 5th Transport motor x2 Timing belt x1 Reinstallation Be sure that the tension spring is connected then tighten the screw B832R109E WMF B832R109F WMF A C B ...

Page 11: ... LCT EXIT MOTOR Remove Remove the rear cover 1 1 A Motor unit x6 x 1 B Spring x1 First loosen screw x 1 C LCT exit motor x2 Timing belt x1 Reinstallation Be sure that the tension spring is connected then tighten the screw B832R109G WMF B832R109H WMF A B C ...

Page 12: ...als 1 4 6 6TH TRANSPORT MOTOR Remove Rear cover 1 1 A Motor unit x6 x 1 B Spring x1 First loosen screw x 1 C LCT exit motor x2 Timing belt x1 Reinstallation Be sure that the tension spring is connected then tighten the screw B832R109I WMF B832R109J WMF A C B ...

Page 13: ...MENT AND ADJUSTMENT 10 March 2006 B832 10 1 4 7 4TH 5TH LIFT MOTORS Remove Rear cover 1 1 A Main control board bracket x5 x All B 4th lift motor x3 x 1 C 5th lift motor x3 x 1 B832R109K WMF B832R109L WMF A B C ...

Page 14: ...he copier A Harness cover x1 x1 B Image position sensor unit x1 x1 x1 C Stopper x1 D Image position sensor After replacing the image position sensor do the procedure for image position sensor adjustment 1 9 Image Position Sensor Board E Image position sensor board x2 x1 x2 Exit Sensor F Exit sensor unit x1 x1 x1 G Exit sensor B832R113 WMF A B C D E G F ...

Page 15: ... B832 12 1 6 PAPER HEIGHT SENSORS PAPER SIZE SENSORS Remove Rear cover 1 1 Right cover 1 1 A Paper height sensor unit x2 x 1 x 4 B Paper height sensors Hooks x 4 each C Paper size sensors x 1 each B832R106 WMF A B A B C 4th 5th Tray 6th Tray ...

Page 16: ...10 March 2006 REPLACEMENT AND ADJUSTMENT B832 13 Peripherals 1 7 MAIN CONTROL BOARD Remove Rear cover 1 1 A Main control board x6 Standoffs x2 x All B832R106A WMF A ...

Page 17: ...hen the punch hole positions are not aligned from a particular feed station adjust the side registration by changing the tray cover position for the tray as described below Then adjust the side registration of the image with the SP1002 1 Pull out the tray 2 Change the screw positions A at both the right and left sides as shown NOTE Adjustment range 0 2 0 mm adjustment step 1 0 mm step B832R112 WMF...

Page 18: ...910 002 CIS Image Position Adjustment LED Strength LCT This calibrates the amount of light to be emitted from the CIS 8 Do SP1909 002 CIS Image Position Adjustment PWM After Adjustment LCT If the displayed value is between 20 14h and 40 28h the CIS is calibrated successfully The display is in hexadecimal code If the value is outside this range do SP 1910 002 and 1909 002 again If the value does no...

Page 19: ...opy Window in the SP display select a tray then push Start The distance of the test pattern line from the paper edge for each tray must be 2 mm If it is not 2 mm adjust with SP1002 004 to 007 depending on which tray is not within the specified 2 mm 15 Do SP1912 002 CIS Image Position Adjustment Normal Paper This sets the CIS for operation with standard copy paper 16 Exit the SP mode 17 Push User T...

Page 20: ...feed stations The 4th and 5th tray each hold 1 000 sheets of paper The 6th tray holds 2 550 sheets of paper Total 4 550 sheets Each tray contains four rollers A Pick up roller B Paper feed roller C Separation roller D Grip roller NOTE The pick up roller paper feed roller and separation roller are a standard FRR paper feed system B832D113 WMF A B C D ...

Page 21: ...er motors control the paper feed drive A Paper feed motor B Grip motor The paper feed motor drives the pick up roller C and the paper feed roller D The grip motor drives the grip roller E that feeds the paper out of the tray and the separation roller F B832D105A WMF A B C D E F ...

Page 22: ... When the separation solenoid A turns on the separation roller B contacts the paper feed roller E and turns with the feed roller unless more than one sheet of paper is fed The three trays of the LCT unit use the standard FRR mechanism When the paper feed motor turns on the pick up solenoid turns on and the pick up roller F lowers until it contacts the top sheet of the paper stack and then sends it...

Page 23: ...ve shaft D The tray drive belts E are connected to the tray bottom plate F and are driven by the tray lift motor via the lift drive shaft D and tray drive pulleys G When the lift motor turns counterclockwise the tray bottom plate F moves up The tray goes up until the top of the paper stack pushes up the pick up roller and the lift sensor in the feed unit is de activated When the actuator H on the ...

Page 24: ... of paper reaches the proper paper feed level the paper pushes up the pick up roller and the actuator C on the pick up roller supporter D de activates the lift sensor E to stop the lift motor After several paper feeds the paper level gradually lowers then the lift sensor is activated and the lift motor turns on again until the lift sensor is de activated again B832D930 WMF A E D C B ...

Page 25: ...e The paper size switch contains three microswitches The paper size switch is actuated by an actuator plate B at the rear of the tray Each paper size has its own unique combination as shown in the table and the CPU determines the paper size by the combination Bottom Tray Tray 6 The bottom tray has the same switch as the top and middle trays However it is only used for detecting when the tray is pu...

Page 26: ... is actuated and the display indicates 100 2 When the actuator passes paper height sensor 1 B the display indicates 75 of the paper supply remaining 3 When the actuator passes paper height sensor 2 C the display indicates 50 of the paper supply remaining 4 When the actuator passes paper height sensor 3 D the display indicates 25 of the paper supply remaining NOTE When the actuator enters the gap o...

Page 27: ...tects the top sheet of the paper in the tray by monitoring the reflected light When the paper tray runs out of paper the paper end sensor does not receive the reflected light due to the cutout B Then the tray lift motor rotates backwards 2 seconds to drop the tray bottom plate B832D933 WMF A B ...

Page 28: ...mounted on its own control board The sensor is a CIS Contact Image Sensor It checks the side edges of each sheet as it passes and feeds this information back to the machine If the side to side registration of the paper is slightly out of alignment the machine will correct the image position when the laser writes the image on the surface of the drum This function does not correct the position of th...

Page 29: ...NENT LAYOUT 1 4th Paper Feed Unit 1 2 5th Paper Feed Unit 3 6th Paper Feed Unit 4 4th Tray Drive Belt 5 5th Tray Drive Belt 6 6th Tray Drive Belt 7 Lower Transport Rollers 8 Horizontal Transport Roller 9 LCT Exit roller 10 Upper Transport Rollers 11 Feed Slot from Bypass Tray B832V101 WMF 4 5 6 7 8 9 10 11 ...

Page 30: ...ft Motor 2 5th Lift Motor 3 6th Lift Motor 4 6th Paper Feed Motor 5 6th Grip Motor 6 6th Transport Motor 7 5th Paper Feed Motor 8 5th Grip Motor 9 LCT Exit Motor 10 5th Transport Motor 11 4th Transport Motor 12 4th Grip Motor 13 4th Paper Feed Motor B832V102 WMF 10 13 12 11 1 2 3 4 5 6 7 8 9 ...

Page 31: ...r 4 13 5th Paper Size Sensors 14 5th Paper Height Sensor 3 15 5th Paper Height Sensor 2 16 5th Paper Height Sensor 1 17 6th Paper Size Sensors 18 6th Paper Height Sensor 4 19 6th Paper Height Sensor 3 20 6th Paper Height Sensor 2 21 6th Paper Height Sensor 1 22 6th Transport Sensor 23 Door Safety Switch 24 6th Separation Solenoid 25 6th Paper End Sensor 26 6th Paper Feed Sensor 27 6th Lift Sensor ...

Page 32: ...Grip Motor 4 4th Paper Feed Motor 5 5th Grip Motor 6 5th Paper Feed Motor 7 4th Lift Motor 8 Main Control Board 9 5th Lift Motor 10 6th Paper Feed Motor 11 6th Lift Motor 12 Anti Condensation Heaters Options 13 6th Grip Motor 14 6th Transport Motor 15 LCT Exit Motor B832V102B WMF 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ...

Page 33: ...sor 8 4th Grip Motor 9 4th Transport Sensor 10 4th Transport Motor 11 4th Relay Sensor 12 5th Paper Feed Motor 13 5th Paper Feed Sensor 14 5th Grip Motor 15 5th Transport Motor 16 5th Transport Sensor 17 6th Paper Feed Motor 18 6th Paper Feed Sensor 19 6th Grip Motor 20 6th Transport Sensor 21 6th Transport Motor 22 LCT Exit Motor 23 LCT Exit Sensor Tray 4 Tray 5 Tray 6 Tray 7 Bypass B832V901 WMF ...

Page 34: ...he rollers in the vertical feed path that feed the paper from the 6th tray to the LCT exit motor M13 LCT Exit Motor Feeds the paper out the LCT and into the entrance of the copier PCBs No Name Description PCB1 Main Control Board Controls the operation of all motors and sensors in the LCT unit PCB2 Image Position Sensor Board Operates the CIS sensor performs waveform correction the LCT The CRB CIS ...

Page 35: ... arrives at the 5th paper feed roller and checks for misfeeds S21 5th Paper Height Sensor 1 4th from the bottom of the 5th tray detects stack height 100 S22 5th Paper Height Sensor 2 5th from the bottom of the 5th tray detects stack height 75 S23 5th Paper Height Sensor 3 6th from the bottom of the 5th tray detects stack height 50 S24 5th Paper Height Sensor 4 4th from the bottom of the 5th tray d...

Page 36: ...r 2 B834 1 of a set of 3 sensors that detect the width of the paper in the 6th tray S44 6th Paper Width Sensor 3 B834 1 of a set of 3 sensors that detect the width of the paper in the 6th tray S45 6th Paper Size Sensor 1 B832 1 of a set of 3 sensors that detect the width of the paper in the 6th tray S46 6th Paper Size Sensor 2 B832 1 of a set of 3 sensors that detect the width of the paper in the ...

Page 37: ... 5th tray SOL4 5th Separation SOL Controls up down movement of the separation roller in the 5th tray SOL5 6th Pick up Solenoid Engages disengages rotation of the pick up roller in the 6th tray SOL6 6th Separation Solenoid Controls up down movement of the separation roller in the 6th tray Switches No Name Description SW1 Door Safety Switch An interlock safety switch that detects when the front door...

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