Ricoh Aficio SP 1200 Service Training Download Page 17

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Ricoh Co. Ltd.

http://www.ricoh.com/

Overall Control

The chart shows
the overall control
flow within the
machine.

RAM

NVRAM

Control System

Parallel ROM

(Only M087)

Laser

Drum unit

Transfer

Charge

Exposure

Cleaning

Development

unit

Toner

Imaging System

Feed System

Drive

(DC motor)

Develop-

ment

Paper tray

Fusing unit

Paper eject

tray

Operation

panel

Operation panel

External device

NIC

User interface

-volt

age

r suppl

igh-volt

age

r suppl

Video/Engine

control

Serial ROM

(Only M088)

No additional notes.

Summary of Contents for Aficio SP 1200

Page 1: ...1 Ricoh Co Ltd http www ricoh com Model BL P1 M087 M088 Service Training Draft started 9 November 2010 Final 10 December 2010 Corrections applied to slide 17 6 January 2011...

Page 2: ...ary depending on your situation Preparation Prior to starting this course prepare the following items Training machines M088 BL P1a and M087 BL P1b in the shipping boxes A set of service tools The BL...

Page 3: ...3 Ricoh Co Ltd http www ricoh com Model BL P1 M087 M088 Service Training 1 Product Outline No additional notes...

Page 4: ...his training course The two models are externally the same BL P1 M087 M088 The BL P1b M087 has NIC and USB2 0 interfaces but the BL P1a M088 does not The BL P1a M088 will be marketed in China only The...

Page 5: ...hipping carton 6 Manual feed slot cover 11 Face down output tray 5 Manual feed slot 10 Ventilation grid 4 Manual feed paper guide 9 Power switch 3 Control panel 8 Front cover 2 Face down output tray s...

Page 6: ...icoh Co Ltd http www ricoh com External Components Rear BL P1b M087 only 3 Network status LEDs 5 USB connector 2 AC power connector 4 10 100BASE TX port 1 Back cover back output tray No additional not...

Page 7: ...s nearing the end of its life 3 Error LED The Error LED indicates when the printer is in one of the following states No paper Paper jam Cover open 4 Ready LED The Ready LED will flash depending on the...

Page 8: ...rs Business personal 1 to 4 users Small office 5 to 29 users Can double as a small office printer copier Key sales points Small stable and convenient laser printer Low TCO Low environmental impact ECO...

Page 9: ...r yield Starter toner Approximately 1 000 sheets Toner Approximately 2 600 sheets Approximate toner yield calculations based on the ISO IEC 19752 standard Drum yield Approximately 12 000 sheets Expect...

Page 10: ...10 Ricoh Co Ltd http www ricoh com Model BL P1 M087 M088 Service Training 2 Specifications No additional notes...

Page 11: ...23 ppm 8 x 11 First copy time Less than 10 seconds Paper tray capacity 250 sheets By pass tray capacity 1 sheet Paper weight Cassette 60 105 g m2 16 28 lb Bypass 60 163 g m2 16 43 lb Warm up time Les...

Page 12: ...12 Ricoh Co Ltd http www ricoh com Model BL P1 M087 M088 Service Training 3 Installation No additional notes...

Page 13: ...o your maintenance duties you may also have to install the machine when you are in the field The full installation procedure is in the Setting Up the Machine section of the Quick Setup Guide Before yo...

Page 14: ...details Install the drum unit Load paper in the paper tray Connect the power cord Do a test print In addition to the above the user may ask you to set up their computer for printing Refer to the QSG...

Page 15: ...15 Ricoh Co Ltd http www ricoh com Model BL P1 M087 M088 Service Training 4 Machine Overview No additional notes...

Page 16: ...r 14 Eject actuator 27 Manual feed slot cover 13 Fuser cover 26 Registration front actuator 12 Outer chute 25 Front feed roller 11 Eject roller 1 24 Paper tray 10 Fuser unit 23 Edge actuator 9 Back co...

Page 17: ...M087 Laser Drum unit Transfer Charge Exposure Cleaning Development unit Toner Imaging System Feed System Drive DC motor Develop ment Paper tray Fusing unit Paper eject tray Operation panel Operation...

Page 18: ...18 Ricoh Co Ltd http www ricoh com Paper Path The red lines show the paths the paper takes through the machine Manual feed Rear eject Paper tray feed Upper eject No additional notes...

Page 19: ...19 Ricoh Co Ltd http www ricoh com Model BL P1 M087 M088 Service Training 5 Service Maintenance Maintenance Mode Cleaning No additional notes...

Page 20: ...y be disclosed to users if necessary To enter User Mode 1 Turn off the power and confirm that the front cover is closed 2 Turn on the power while pressing the Go button 3 When the Drum and Error LEDs...

Page 21: ...tions or modes 1 Test Sample Page same as pressing once Nine or more times 8 NV RAM Factory Reset Eight times 7 Network Reset 1 APIPA ON Seven times 6 1 Push Printing Recovery Mode Six times 5 PCB Onl...

Page 22: ...on or mode as shown by the following table Back to normal state Eight times or more 15 Paper Size Setting A4 Letter Seven times 14 QA Test Print Six times 13 RAM Check Five times 12 NV RAM Value Dump...

Page 23: ...mes or more 21 Developer Roller Counter Reset 2 For standard toner cartridge Seven times Not used Do not select will cause counter error Six times 20 Developer Roller Counter Reset 1 For starter toner...

Page 24: ...drum unit is replaced the drum counter must be reset Refer to the FSM or the User s Guide for the procedure and for other details FSM Service Maintenance Other Service functions Resetting the Drum Cou...

Page 25: ...ed automatically If a previously installed toner cartridge containing sufficient toner is installed you must force development bias initialization Refer to the FSM for the procedure and for other deta...

Page 26: ...hedule As a preventive maintenance measure you may need to clean machine components during service calls Go to the machine and practice cleaning procedures Pay particular attention to cleaning the dru...

Page 27: ...27 Ricoh Co Ltd http www ricoh com Model BL P1 M087 M088 Service Training 6 Mechanical Operation No additional notes...

Page 28: ...ssure is kept constant to optimize paper feeding performance irrespective of the quantity of paper remaining in the tray After paper is inserted the main motor drives the lift gear by way of several g...

Page 29: ...B is released The clutch cam released by hook B rotates to push down the rib of the hook A Hook A releases the ratchet of the clutch and the bottom plate lift arm stops its push up function Confirm t...

Page 30: ...roller The separation pad strips off the top sheet The trailing edge actuator is for misfeed detection Separation roller Trailing edge actuator Separation pad Paper feed roller Paper tray This is a ty...

Page 31: ...turning and the paper is carried to the transfer roller Registration front actuator Registration rollers Transfer roller Registration rear actuator Separation roller Function of Actuators The registr...

Page 32: ...down into the output tray by the eject rollers The eject actuator detects whether or not paper is ejected from the fuser unit jam detection When a paper jam is detected near the eject actuator the mai...

Page 33: ...gistration front actuator detects the paper and shortly after that the registration rollers start turning to feed the paper When printing with the back cover open the paper is ejected onto the back co...

Page 34: ...34 Ricoh Co Ltd http www ricoh com Model BL P1 M087 M088 Service Training 7 Print Processes No additional notes...

Page 35: ...35 Ricoh Co Ltd http www ricoh com Print Processes 1 Overview Printing is done by the five processes shown above Charge Exposure Development Transfer Fusing No additional notes...

Page 36: ...V Grid ensures an even charge distribution Aluminum sleeve of the drum is grounded providing a path for the charge to go to ground upon exposure to light Drum Grid Positive ions Corona wire The level...

Page 37: ...charged drum by light from the laser unit Where light strikes the resistance of the OPC layer drops and the charge on the drum surface goes through the aluminum core to ground Drum Laser unit Polygon...

Page 38: ...eby developing the image Charging Laser exposure Bias 450 V to 300 V Varies depending on use Toner Development roller Development roller Drum Metering blade Drum Supply roller Toner is non magnetic It...

Page 39: ...ansfer roller attracts the toner from the drum to the paper The negative bias applied in the transfer roller is adjusted according to types and sizes of paper so as to keep consistent image quality To...

Page 40: ...paper by heat and pressure as the paper passes through the fusing unit A thermistor monitors the heat roller temperature and the halogen lamp turns on off to maintain a constant heat roller temperatur...

Page 41: ...41 Ricoh Co Ltd http www ricoh com Model BL P1 M087 M088 Service Training 8 Toner Cartridge No additional notes...

Page 42: ...ner switch turns on The main motor turns the reset gear to rotate the reset tab clockwise to the down position Print count and development bias are reset Toner cartridge New toner sensor Toner cartrid...

Page 43: ...gradually decreased based on print count Density and Voltage Total Prints Density and Voltage Total Prints Print density Toner Properties Print density Actual Bias Control Bias voltage Bias voltage Wh...

Page 44: ...44 Ricoh Co Ltd http www ricoh com Model BL P1 M087 M088 Service Training 9 Replacement and Adjustment No additional notes...

Page 45: ...e the all safety precautions during maintenance work Refer to the list of safety precautions in the field service manual FSM Replacement and Adjustment Safety Precautions Additionally pay attention to...

Page 46: ...tment Disassembly Flow The disassembly flowchart shows what components must be removed and the order of removal in order to access target components Disassembly Practice Referencing the FSM go to the...

Page 47: ...uting The Harness Routing section of the FSM shows the positioning of harnesses and wires in the machine Refer to it when reassembling the machine FSM Replacement and Adjustment Harness Routing Exampl...

Page 48: ...cement Adjustments and settings changes are required after replacing the following parts Main PCB Laser Unit Refer to the FSM for the details FSM Replacement and Adjustment Adjustments and Updating of...

Page 49: ...49 Ricoh Co Ltd http www ricoh com Model BL P1 M087 M088 Service Training 10 Troubleshooting No additional notes...

Page 50: ...o Ltd http www ricoh com Troubleshooting Troubleshooting Practice Study the Troubleshooting sections of the FSM appendix and User s Guide Simulate some of the error conditions on the machine No additi...

Page 51: ...coh com Model BL P1 M087 M088 Service Training 11 Technology for Environmental Conservation This section explains the technology used in this machine for environmental conservation and the default set...

Page 52: ...6 Ozone reduction design Improves machine productivity when printing out duplex double sided images 5 High speed duplex output Allows documentation to be managed digitally cutting down on paper consu...

Page 53: ...o warm up to the Ready condition This is made possible through the utilization of dual fusing lamp heating low fusing point toner a pressure roller with a sponge surface layer and a thin surface layer...

Page 54: ...the benefits of reduced energy consumption and reduced warm up time to be extended to color machines 4 Paper saving features 1 The duplex double sided and Combine features reduce paper consumption 2 T...

Page 55: ...nterleaf and high speed Inverter Transport features 2 Enables quick printing of duplex jobs through the use of Duplex Scanning 6 Ozone reduction design Greatly reduces the machine s ozone emissions to...

Page 56: ...the conventional pulverization method This allows the toner to fuse at a lower temperature which reduces the impact on the environment and contributes to achieving even higher image quality than befor...

Page 57: ...cal laws and regulations as well as user requirements in each market in which the products are sold 2 Reduces the noise generated by the polygon mirror motor 9 Minimization of harmful substances 1 Pro...

Page 58: ...ing Enables effective use of resources by recycling reusing the toner left over on the drum surface after image transfer 12 Recycle friendly design To maximize the recycling ratio of machine and compo...

Page 59: ...ters energy saver mode to reduce the power consumption by turning off the LCD of the operation panel and lowering the fusing temperature The area shaded green in this diagram represents the amount of...

Page 60: ...r requests that these settings should be changed please explain that their energy costs could increase and that they should consider the effects on the environment of extra energy use If it is necessa...

Page 61: ...pleted the machine returns to sleep mode via ready mode when the auto off timer runs out or the operation switch is pressed This is the same as Off mode Power Consumption Warm up Operation Mode Ready...

Page 62: ...62 Ricoh Co Ltd http www ricoh com End of Course No additional notes...

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