REPLACEMENT AND ADJUSTMENT Savin MP C3003, Ricoh MP C3003 Service Manual

The main power button of this machine has been changed to a push-button switch (push button) from the conventional rocker switch. The push switch has characteristics and specifications different from the rocker switch. Care must be taken when replacing and adjusting parts.

The push switch in this machine uses DC (direct current). Therefore, if the AC power cord is connected to an electrical outlet, power is supplied to the controller board, the operation unit and other modules even when the main power is turned OFF. When replacing the controller board and the operation unit in this state, not only these boards, it will damage other electrical components.

So, when performing maintenance work such as replacing parts, in addition to turning off the main power with the push switch, always unplug the AC power cord.

When you disconnect the power cord from the AC wall outlet, inside the machine there is still residual charge.

When you disconnect the power cord from the AC wall outlet, inside the machine for a while there is still residual charge. Therefore, if you remove boards in this state, it can cause a blown fuse or memory failure.

After you unplug the power cord from the AC wall outlet, in order to remove the residual charge from inside the machine, be sure to press the main power switch. Thus, the charge remaining in the machine is released, and it is possible to remove boards.

When you reconnect the AC power cord into an AC wall outlet, the machine will start automatically.

In order to remove the residual charge, push the main power switch while you disconnect the AC power cord. At that time, the power ON flag inside the machine is set. Therefore, after you finish work on the machine and reconnect the power cord to the AC, even if you do not press the main power switch, the machine will start automatically and the moving parts will begin to move. When working on moving parts, be careful that fingers or clothes do not get caught.

 Automatic restart deals with cases when you accidentally unplugged the AC power cord or unexpected power outages. By keeping the power flag ON, after the resumption of power, the machine will start up automatically.

NOTES ON THE MAIN POWER SWITCH PUSH SWITCH Characteristics of the Push Switch (DC Switch)Shutdown Method Forced Shutdown BEFOREHAND SPECIAL TOOLS EXTERIOR COVERS FRONT COVER CONTROLLER COVER UPPER LEFT COVER LEFT REAR COVER LEFT COVER REAR COVER REAR RIGHT COVER REAR LOWER COVER SCANNER REAR COVER SCANNER REAR COVER (SMALL)RIGHT REAR COVER RIGHT UPPER COVER MAIN POWER SWITCH COVER WASTE TONER COVER REVERSE TRAY PAPER EXIT TRAY PAPER EXIT COVER PAPER EXIT LOWER COVER PAPER EXIT FRONT COVER INNER UPPER COVER INNER LOWER COVER CONTROLLER UNIT OPERATION PANEL BOARD A BOARD B BOARD C LCD PANEL LCD Notes when replacing the LCD Replacement procedure SCANNER UNIT SCANNER EXTERIOR Scanner Upper Cover Scanner Right Cover Scanner Front Cover Scanner Left Cover EXPOSURE GLASS EXPOSURE LAMP (LED)SCANNER MOTOR LENS BLOCK ORIGINAL SIZE SENSOR SIO SCANNER HP SENSOR DF POSITION SENSOR ADJUSTING THE SCANNER WIRE Scanner Wire (Front)Scanner wire assembly (front side)Scanner position adjustment Scanner Wire (Rear)Scanner Wire Assembly (rear side)MODIFYING THE SCANNER (CONTACT/CONTACTLESS) WHEN USING ARDF Procedure for the ADF Procedure for the scanner MODIFYING THE SCANNER (CONTACT/CONTACTLESS) WHEN USING SPDF Procedure for the SPDF Procedure for the scanner LASER UNIT LASER UNIT Before Replacement Removing Installing a New Laser Unit Adjustment after replacing the laser unit POLYGON MOTOR Adjustment after replacing the polygon motor IMAGING TEMPERATURE SENSOR (THERMISTOR)PCDU NOTES WHEN REPLACING A PCDU D146/D147/ D148 D149/D150 PCDU Adjustment before replacing the PCDU Replacement PCU/DEVELOPMENT UNIT Before replacing a PCU or development unit Replacement Precautions when joining the PCU and the development Unit Check procedure after replacing WASTE TONER REPLACEMENT ADJUSTMENT AFTER REPLACING IMAGE TRANSFER UNIT IMAGE TRANSFER BELT UNIT Adjustment before replacing the image transfer belt unit Replacement IMAGE TRANSFER CLEANING UNIT Adjustment before replacing the image transfer cleaning unit Replacement IMAGE TRANSFER BELT Adjustment after replacing the Image transfer belt PAPER TRANSFER ROLLER PAPER TRANSFER ROLLER UNIT Adjustment before replacing the paper transfer roller unit Replacement PAPER TRANSFER EXIT SENSOR TM (ID) SENSOR Before Replacing the TM(ID) sensor Replacement procedure Adjustment after replacing the TM(ID) sensor TEMPERATURE AND HUMIDITY SENSOR DRIVE UNIT OVERVIEW PAPER FEED MOTOR TRANSPORT MOTOR TRANSFER MOTOR UNIT IMAGING DRIVE UNIT PCU MOTOR: CMY DEVELOPMENT MOTOR: CMY DEVELOPMENT MOTOR: BLACK PCU: BLACK / IMAGE TRANSFER MOTOR REGISTRATION MOTOR FUSING MOTOR PAPER EXIT / PRESSURE RELEASE MOTOR DUPLEX ENTRANCE MOTOR TONER TRANSPORT MOTOR SUB HOPPER K C M Y TONER END SENSOR TONER BOTTLE DRIVE MOTOR K C M Y ID CHIP K C M Y FUSING UNIT FUSING ENTRANCE GUIDE PLATE Cleaning the Fusing Entrance Guide Plate FUSING EXIT GUIDE PLATE Cleaning the Fusing Exit Guide Plate FUSING UPPER COVER FUSING LOWER COVER FUSING FRONT COVER FUSING REAR COVER HEATING SLEEVE BELT UNIT Replacement PRESSURE ROLLER Adjustment before replacing the pressure roller Replacement THERMOSTAT UNIT NC SENSOR UNIT FUSING THERMISTOR FUSING THERMOPILE UNIT PRESSURE ROLLER HP SENSOR FUSING SHIELD POSITION SENSOR FUSING SHIELD DRIVE MOTOR PAPER EXIT PAPER EXIT UNIT PAPER EXIT SWITCHING SOLENOID PAPER EXIT SENSOR REVERSE SENSOR PAPER EXIT FULL SENSOR REVERSE MOTOR FUSING EXIT SENSOR PAPER FEED PAPER FEED UNIT 1st Paper Feed Unit 2nd Paper Feed Unit PAPER DUST COLLECTION UNIT PICK-UP ROLLER, PAPER FEED ROLLER, SEPARATION ROLLER, TORQUE LIMITER PAPER FEED SOLENOID PAPER FEED SENSOR VERTICAL TRANSPORT SENSOR LIMIT SENSOR PAPER END SENSOR REGISTRATION SENSOR BY-PASS TRAY UNIT BY-PASS TRAY BY-PASS PAPER END SENSOR BY-PASS PICK-UP ROLLER BY-PASS PAPER FEED ROLLER BY-PASS SEPARATION ROLLER TORQUE LIMITER BY-PASS TRAY SIDE FENCE (D150 ONLY)DUPLEX UNIT DUPLEX/BY-PASS MOTOR DUPLEX ENTRANCE SENSOR DUPLEX JAM PROCESSING LED DUPLEX EXIT SENSOR DOUBLE FEED SENSOR (D150 ONLY)ELECTRICAL COMPONENTS OVERVIEW Printed Circuits/Parts Inside the Controller Box Printed Circuits Behind the Controller Box.Printed Circuit/Parts Inside the Power Box Printed Circuits Behind the Power Box.IPU SUB (SPDF ONLY)IPU BCU Replacing the NVRAM (EEPROM) on the BCU CONTROLLER BOARD NVRAMs on the controller board HDD Adjustment after replacement CPU COOLING FAN IMAGING IOB HVP_TTS PSU (AC CONTROLLER BOARD)PSU (DC POWER)PAPER TRANSPORT IOB HVP-CB FANS/FILTERS OZONE FILTER/DUST FILTER Adjustment before replacing the dust filter Replacement ODOR FILTER DEVELOPMENT INTAKE FAN/RIGHT DEVELOPMENT INTAKE FAN/LEFT OZONE EXHAUST FAN PAPER EXIT COOLING FAN FUSING EXHAUST HEAT FAN DRIVE COOLING FAN (D148/D149/D150)MAIN EXHAUST FAN (D148/D149/D150)TONER SUPPLY COOLING FAN D148/D149/D150 D146/D147 PSU COOLING FAN PSU EXHAUST HEAT FAN (D148/D149/D150)POWER BOX COOLING FAN IMAGE ADJUSTMENT SCANNING Scanner sub-scan magnification Scanner leading edge and side-to-side registration ARDF ARDF side-to-side, leading edge registration and trailing edge ARDF sub-scan magnification REGISTRATION Image Area Leading Edge Side to Side Adjustment Standard Paper Registration Standard Adjustment Procedure ERASE MARGIN ADJUSTMENT COLOR REGISTRATION Line Position Adjustment PRINTER GAMMA CORRECTION Copy Mode Printer Mode

4. REPLACEMENT AND ADJUSTMENT