Service Manual Ricoh DD450;
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1. PRODUCT INFORMATION
1.1 SPECIFICATIONS
1.2 OVERVIEW
1.2.1 COMPONENT LAYOUT
1.2.2 ELECTRICAL COMPONENT LAYOUT
1.2.3 DRIVE LAYOUT
1.3 MACHINE CODES AND PERIPHERALS CONFIGURATION
1.4 GUIDANCE FOR THOSE WHO ARE FAMILIAR WITH PREDECESSOR PRODUCTS

2. INSTALLATION PROCEDURE
2.1 INSTALLATION REQUIREMENTS
2.1.1 OPTIMUM ENVIRONMENTAL CONDITION
2.1.2 ENVIRONMENTS TO AVOID
2.1.3 POWER CONNECTION
2.1.4 MACHINE ACCESS
2.1.5 POWER SOCKETS FOR PERIPHERALS
2.2 OPTIONAL UNIT COMBINATIONS
2.2.1 MACHINE OPTIONS
2.3 MACHINE INSTALLATION
2.3.1 ACCESSORY CHECK
2.3.2 INSTALLATION PROCEDURE
2.3.3 BRAND SETTING
2.4 PLATEN COVER (D593)
2.4.1 ACCESSORY CHECK
2.4.2 INSTALLATION PROCEDURE
2.5 AUTO DOCUMENT FEEDER (D578)
2.5.1 ACCESSORY CHECK
The Aim of Anti-tip Components and Precautions
2.5.2 INSTALLATION PROCEDURE
2.5.3 ADF STABILIZER INSTALLATION
2.5.4 CONFIGURATION OF OPTIONS
SP6-2 Main-scan position - ADF
SP6-4 Scan start position - ADF
2.6 TAPE DISPENSER (C651)
2.6.1 ACCESSORY CHECK
2.6.2 INSTALLATION PROCEDURE
2.7 NETWORK CONTROLLER (C654)
2.7.1 ACCESSORY CHECK
2.7.2 INSTALLATION PROCEDURE
Prepare to install the board: Stage 1
Install the controller in the main machine
2.8 OPTIONAL DRUMS (C618/C619/C620)

3. PREVENTIVE MAINTENANCE
3.1 MAINTENANCE TABLES

4. REPLACEMENT AND ADJUSTMENT
4.1 BEFOREHAND
4.2 SPECIAL TOOLS
4.3 IMAGE ADJUSTMENT
4.3.1 SP6-10: MASTER WRITING SPEED
4.3.2 SP6-100 TO 107: PAPER REGISTRATION
4.3.3 SP6-05, 6-06: SCANNING SPEED - PLATEN, ADF
4.3.4 SP6-03, 6-04: SCANNING START POSITION - PLATEN, ADF
4.3.5 SP6-01, 6-02: MAIN SCAN POSITION - PLATEN, ADF
4.3.6 SP6-20: STANDARD WHITE EXECUTION
4.4 COVERS AND BOARDS
4.4.1 FRONT COVER, OPERATION PANEL
4.4.2 RIGHT COVER
4.4.3 LEFT COVER
4.4.4 REAR COVER
4.4.5 FRONT DOOR SAFETY SWITCH
4.4.6 MPU
4.4.7 PSU
4.5 SCANNER UNIT
4.5.1 EXPOSURE GLASS
4.5.2 ORIGINAL LENGTH SENSORS
4.5.3 EXPOSURE LAMP
Reassembling
4.5.4 SCANNER MOTOR
4.5.5 SENSOR BOARD UNIT (SBU)
4.5.6 EXPOSURE LAMP STABILIZER
4.5.7 SCANNER HP SENSOR
4.5.8 PLATEN COVER SENSOR
4.5.9 FRONT SCANNER WIRE
Reinstalling the Front Scanner Wire
4.5.10 REAR SCANNER WIRE
Reinstalling the Rear Scanner Wire
4.6 MASTER EJECT UNIT
4.6.1 MASTER EJECT UNIT
Master Eject Safety Switch
Eject Box Set Switch
4.7 MASTER FEED
4.7.1 MASTER MAKING UNIT
4.7.2 PLOTTER SAFETY SWITCH
4.7.3 THERMAL HEAD
Installation
4.7.4 DUCT PLATE HP SENSOR, DUCT PLATE MOTOR
4.7.5 CUTTER UNIT
4.7.6 THERMAL HEAD DRIVING UNIT
4.7.7 DUCT JAM SENSOR ADJUSTMENT
4.7.8 MASTER EDGE SENSOR ADJUSTMENT
4.7.9 2ND DRUM MASTER SENSOR ADJUSTMENT
4.7.10 MASTER END SENSOR ADJUSTMENT
4.7.11 THERMAL HEAD VOLTAGE ADJUSTMENT
4.8 PAPER FEED
4.8.1 PICK-UP ROLLER, PAPER FEED ROLLER, FRICTION PAD
4.8.2 PAPER FEED SAFETY COVER
4.8.3 PAPER SEPARATION PRESSURE ADJUSTMENT
4.8.4 PAPER WIDTH DETECTION BOARD
4.9 PRINTING
4.9.1 PRESS ROLLER
4.9.2 PRESS ROLLER RELEASE LEVER ADJUSTMENT
4.9.3 PRINTING PRESSURE ADJUSTMENT
4.10 DRUM
4.10.1 PREPARATION
4.10.2 CLOTH SCREEN
Installation
4.10.3 CLAMPER, METAL SCREEN
Installation
4.10.4 MYLAR SEAL
4.10.5 INK PUMP ADJUSTMENT
4.10.6 INK ROLLER UNIT, INK ROLLER ONE-WAY CLUTCH
4.10.7 IDLING ROLLER MOTOR, IDLING ROLLER HP SENSOR
4.10.8 DOCTOR ROLLER GAP ADJUSTMENT
4.10.9 INK DETECTION ADJUSTMENT
4.10.10 MAIN MOTOR PULLEY POSITION
4.10.11 MAIN DRIVE TIMING BELT ADJUSTMENT
4.11 PAPER DELIVERY
4.11.1 PAPER DELIVERY UNIT
4.11.2 FAN MOTOR, EXIT SENSOR
4.11.3 EXIT PAWL ADJUSTMENT
Timing Adjustment
Clearance Adjustment
4.11.4 AIR PUMP ADJUSTMENT
4.11.5 CHOCKS
4.12 NETWORK PRINTER CONTROLLER
4.12.1 PRINTER BOARD
4.13 SOUND-PROOFING CUSHIONS
4.13.1 PAPER FEED LEFT, PAPER FEED RIGHT
4.13.2 PAPER EXIT
4.13.3 MASTER EJECT COVER
4.13.4 BASE
4.14 FUSE, LED, VR, DIP-SW, AND TP TABLES
4.14.1 BLOWN FUSE CONDITIONS
PSU
4.14.2 LED'S
MPU
Controller Board
4.14.3 VR'S
MPU
PSU
Ink detection board
4.14.4 DIP SWITCHES
Ink detection board
Controller Board
4.14.5 TEST POINTS
MPU
PSU
5. SYSTEM MAINTENANCE REFERENCE
5.1 SERVICE PROGRAM MODE
5.1.1 USING SERVICE PROGRAM MODES
How to Select a Program Number

6. TROUBLESHOOTING
6.1 FIRMWARE UPDATE
6.1.1 TYPE OF FIRMWARE
6.1.2 BEFORE YOU BEGIN
6.1.3 PREPARING TO DOWNLOAD FIRMWARE
6.1.4 DOWNLOAD MAIN/ADF FIRMWARE
6.1.5 DOWNLOAD FV-LT FIRMWARE
6.2 ELECTRICAL COMPONENT DEFECTS
6.2.1 SENSORS
6.2.2 SWITCHES
6.2.3 POWER SUPPLIES
6.2.4 CONTROLLER

7. ENERGY SAVING
7.1 ENERGY SAVE
7.1.1 ENERGY SAVE
Timer Settings
Recommendation
7.2 PAPER SAVE
7.2.1 EFFECTIVENESS OF THE COMBINE FUNCTION
Combine mode
Recommendation
C279

Number of pages: 269.