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Make/Model Information:

  • Brand:   Ricoh
  • Models included:
    • Ricoh B245
    • Ricoh B276
    • Ricoh B277

File Information:

  • Type:   Factory Service Manual (FSM)
  • Language:   English (EN)
  • Number of pages:   866
  • File size:  ∼ 20.40 MB
  • File Format:   PDF only
  • SME Watermarks:   None
  • Password lock:   No
  • Edit/copy/modify:   Yes
  • SKU:   BMRH-1037

NOTE:  This list was created by program script and may not accurately represent the text from the source pages.   For full preview please click on 'Download sample':

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B245/B276/B277
SERVICE MANUAL
002706MIU
SM i B245/B276/B277
B245/B276/B277
TABLE OF CONTENTS
INSTALLATION
1. INSTALLATION
1.1 INSTALLATION REQUIREMENTS
1.1.1 ENVIRONMENT
1.1.2 MACHINE LEVEL
1.1.3 MINIMUM SPACE REQUIREMENTS
1.1.4 POWER REQUIREMENTS
1.2 COPIER INSTALLATION
1.2.1 POWER SOCKETS FOR PERIPHERALS
1.2.2 ACCESSORY CHECK
1.2.3 INSTALLATION PROCEDURE
1.3 PLATEN COVER INSTALLATION
1.3.1 ACCESSORY CHECK
1.3.2 INSTALLATION PROCEDURE
1.4 ARDF INSTALLATION
1.4.1 ACCESSORY CHECK
1.4.2 INSTALLATION PROCEDURE
1.5 ADF INSTALLATION
1.5.1 ACCESSORY CHECK
1.5.2 INSTALLATION PROCEDURE
1.6 TWO-TRAY PAPER TRAY UNIT INSTALLATION
1.6.1 ACCESSORY CHECK
1.6.2 INSTALLATION PROCEDURE
1.7 ONE-TRAY PAPER TRAY UNIT INSTALLATION
1.7.1 ACCESSORY CHECK
1.7.2 INSTALLATION PROCEDURE
1.8 ONE-BIN TRAY INSTALLATION
1.8.1 ACCESSORY CHECK
1.8.2 INSTALLATION PROCEDURE
1.9 ANTI-CONDENSATION HEATER INSTALLATION
1.10 TRAY HEAT ERS
1.10.1 UPPER TRAY HEATER
1.10.2 LOWER TRAY HEATER (TWO-TRAY MODEL ONLY)
1.10.3 TRAY HEATERS FOR THE OPTIONAL PAPER FEED UNITS1-34
1.11 KEY COUNTER INSTALLATION
PREVENTIVE MAINTENANCE
2. PREVENTIVE MAINTENANCE
2.1 PM TABLES
B245/B276/B277 ii SM
2.2 HOW TO RESET THE PM COUNTER
REPLACEMENT AND ADJUSTMENT
3. REPLACEMENT AND ADJUSTMENT
3.1 GENERAL CAUTIONS
3.1.1 PCU (PHOTOCONDUCTOR UNIT)
3.1.2 TRANSFER ROLLER
3.1.3 SCANNER UNIT
3.1.4 LASER UNIT
3.1.5 FUSING UNIT
3.1.6 PAPER FEED
3.2 SPECIAL TOOLS AND LUBRICANTS
3.3 EXTERIOR COVERS & OPERATION PANEL
3.3.1 REAR COVER
3.3.2 REAR LOWER COVER (TWO-TRAY MODELS ONLY)
3.3.3 COPY TRAY
3.3.4 UPPER COVERS
3.3.5 LEFT COVER
3.3.6 FRONT COVER
3.3.7 FRONT RIGHT COVER
3.3.8 RIGHT REAR COVER
3.3.9 RIGHT DOOR (DUPLEX UNIT (B269/B277))
3.3.10 BY-PASS TRAY
3.3.11 LEFT LOWER COVER (TWO-TRAY MODELS ONLY)
3.3.12 RIGHT LOWER COVER (TWO-TRAY MODELS ONLY)
3.3.13 PLATEN COVER SENSOR
3.4 SCANNER UNIT
3.4.1 EXPOSURE GLASS/DF EXPOSURE GLASS
3.4.2 LENS BLOCK
3.4.3 LAMP STABILIZER BOARD AND EXPOSURE LAMP
3.4.4 ORIGINAL WIDTH/LENGTH SENSOR
3.4.5 SCANNER MOTOR
3.4.6 SCANNER HOME POSITION SENSOR
3.4.7 ADJUSTING SCANNER POSITIONS
3.5 LASER UNIT
3.5.1 LOCATION OF CAUTION DECAL
3.5.2 TONER SHIELD GLASS
3.5.3 LASER UNIT
3.5.4 LD UNIT
3.5.5 POLYGONAL MIRROR MOTOR
3.5.6 LASER UNIT ALIGNMENT ADJUSTMENT
3.6 PCU SECTION
3.6.1 PCU
3.6.2 PICK-OFF PAWLS AND TONER DENSITY SENSOR
3.6.3 OPC DRUM
3.6.4 CHARGE ROLLER AND CLEANING BRUSH
3.6.5 CLEANING BLADE
SM iii B245/B276/B277
3.6.6 DEVELOPER
3.6.7 AFTER REPLACEMENT OR ADJUSTMENT
3.7 TONER SUPPLY MOTOR
3.8 PAPER FEED SECTION
3.8.1 PAPER FEED ROLLER
3.8.2 FRICTION PAD
3.8.3 PAPER END SENSOR
3.8.4 EXIT SENSOR
3.8.5 BY-PASS FEED ROLLER AND PAPER END SENSOR
3.8.6 REGISTRATION ROLLER
3.8.7 BY-PASS PAPER SIZE SWITCH
3.8.8 REGISTRATION CLUTCH
3.8.9 REGISTRATION SENSOR
3.8.10 UPPER PAPER FEED CLUTCH AND BY-PASS FEED CLUTCH..
3.8.11 RELAY CLUTCH
3.8.12 RELAY SENSOR
3.8.13 LOWER PAPER FEED CLUTCH (TWO-TRAY MODELS ONLY)
3.8.14 VERTICAL TRANSPORT SENSOR (TWO-TRAY MODELS ONLY)
3.8.15 PAPER SIZE SWITCH
3.9 IMAGE TRANSFER
3.9.1 IMAGE TRANSFER ROLLER
3.9.2 IMAGE DENSITY SENSOR
3.10 FUSI NG
3.10.1 FUSING UNIT
3.10.2 THERMISTOR
3.10.3 FUSING LAMPS
3.10.4 HOT ROLLER STRIPPER PAWLS
3.10.5 HOT ROLLER
3.10.6 THERMOSTAT
3.10.7 PRESSURE ROLLER AND BUSHINGS
3.10.8 NIP BAND WIDTH ADJUSTMENT
3.10.9 CLEANING ROLLER
3.11 DUPLEX UNIT (DUPLEX MODELS B269/B277 ONLY)
3.11.1 DUPLEX EXIT SENSOR
3.11.2 DUPLEX ENTRANCE SENSOR
3.11.3 DUPLEX INVERTER SENSOR
3.11.4 DUPLEX TRANSPORT MOTOR
3.11.5 DUPLEX INVERTER MOTOR
3.11.6 DUPLEX CONTROL BOARD
3.12 OTHER REPL ACEMENTS
3.12.1 QUENCHING LAMP
3.12.2 HIGH-VOLTAGE POWER SUPPLY BOARD
3.12.3 BICU (BASE-ENGINE IMAGE CONTROL UNIT)
3.12.4 MAIN MOTOR
3.12.5 REAR EXHAUST FAN (B269/B277 ONLY)
3.12.6 LEFT EXHAUST FAN
B245/B276/B277 iv SM
3.12.7 PSU (POWER SUPPLY UNIT)
3.12.8 GEARBOX
3.13 COPY ADJUSTMENTS PRINTING/SCANNING
3.13.1 PRINTING
3.13.2 SCANNING
3.13.3 ADF IMAGE ADJUSTMENT
TROUBLESHOOTING
4. TROUBLESHOOTING
4.1 SERVICE CALL CONDITIONS
4.1.1 SUMMARY
4.1.2 SC CODE DESCRIPTIONS
4.2 ELECTRICAL COMPONENT DEFECTS
4.2.1 SENSORS
4.2.2 SWITCHES
4.3 BLOWN FUSE CONDITIONS
4.4 LED DISPLAY
4.4.1 BICU
SERVICE TABLES
5. SERVICE TABLES
5.1 SERVICE PROGRAM MODE
5.1.1 HOW TO ENTER THE SP MODE
5.2 SP MODE TABLES
5.2.1 SP1-XXX (FEED)
5.2.2 SP2-XXX (DRUM)
5.2.3 SP4-XXX (SCANNER)
5.2.4 SP5-XXX (MODE)
5.2.5 SP6-XXX (PERIPHERALS)
5.2.6 SP7-XXX (DATA LOG)
5.2.7 SP8-XXX (HISTORY)
5.2.8 SP9-XXX (ETC.)
5.3 USING SP MODES
5.3.1 ADJUSTING REGISTRATION AND MAGNIFICATION
5.3.2 ID SENSOR ERROR ANALYSIS (SP 2221)
5.3.3 DISPLAY APS DATA (SP 4301 1)
5.3.4 MEMORY CLEAR
5.3.5 INPUT CHECK (SP 5803)
5.3.6 OUTPUT CHECK (SP 5804)
5.3.7 SERIAL NUMBER INPUT (SP 5811)
5.3.8 NVRAM DATA UPLOAD/DOWNLOAD (SP 5824/5825)
5.3.9 FIRMWARE UPDATE PROCEDURE
5.3.10 TEST PATTERN PRINT (SP 5902 1)
5.3.11 PAPER JAM COUNTERS (SP 7504)
5.3.12 SMC PRINT (SP 5990)
SM v B245/B276/B277
5.3.13 ORIGINAL JAM HISTOR Y DISPLAY (SP 7508)
5.3.14 ADF APS SENSOR OUTPUT DISPLAY (SP 6901)
DETAILED DESCRIPTIONS
6. DETAILED SECTION DESCRIPTIONS
6.1 OVERVIEW
6.1.1 COMPONENT LAYOUT
6.1.2 PAPER PATH
6.1.3 DRIVE LAYOUT
6.2 BOARD STRUCTURE
6.2.1 BLOCK DIAGRAM
6.2.2 BICU (BASE ENGINE AND IMAGE CONTROL UNIT)
6.2.3 SBU (SENSOR BOARD UNIT)
6.3 COPY PROCESS OVERVIEW
6.4 SCANNING
6.4.1 OVERVIEW
6.4.2 SCANNER DRIVE
6.4.3 ORIGINAL SIZE DETECTION IN PLATEN MODE
6.5 IMAGE PROCESSING
6.5.1 OVERVIEW
6.5.2 SBU (SENSOR BOARD UNIT)
6.5.3 IPU (IMAGE PROCESSING UNIT)
6.5.4 VIDEO CONTROL UNIT (VCU)
6.6 LASER EXPOSURE
6.6.1 OVERVIEW
6.6.2 AUTO POWER CONTROL (APC)
6.6.3 LD SAFETY SWITCH
6.7 PHOTOCONDUCTOR UNIT (PCU)
6.7.1 OVERVIEW
6.7.2 DRIVE
6.8 DRUM CHARGE
6.8.1 OVERVIEW
6.8.2 CHARGE ROLLER VOLTAGE CORRECTION
6.8.3 ID SENSOR PATTERN PRODUCTION TIMING
6.8.4 DRUM CHARGE ROLLER CLEANING
6.9 DEVELOPMENT
6.9.1 OVERVIEW
6.9.2 DRIVE
6.9.3 DEVELOPER MIXING
6.9.4 DEVELOPMENT BIAS
6.9.5 TONER SUPPLY
6.9.6 TONER SUPPLY MECHANISM
6.9.7 TONER DENSITY CONTROL
6.9.8 TONER SUPPLY IN ABNORMAL SENSOR CONDITIONS
6.9.9 TONER NEAR END/END DETECTION AND RECOVERY
6.10 DRUM CLEANING AND TONER RECYCLING
6.10.1 DRUM CLEANING
B245/B276/B277 vi SM
6.10.2 TONER RECYCLING
6.11 PAPER FEED
6.11.1 OVERVIEW
6.11.2 PAPER FEED DRIVE MECHANISM
6.11.3 PAPER FEED AND SEPARATION MECHANISM
6.11.4 PAPER LIFT MECHANISM
6.11.5 PAPER END DETECTION
6.11.6 PAPER SIZE DETECTION
6.11.7 SIDE FENCES
6.11.8 PAPER REGISTRATION
6.12 IMAGE TRANSFER AND PAPER SEPARATION
6.12.1 OVERVIEW
6.12.2 IMAGE TRANSFER CURRENT TIMING
6.12.3 TRANSFER ROLLER CLEANING
6.12.4 PAPER SEPARATION MECHANISM
6.13 IMAGE FUSING AND PAPER EXIT
6.13.1 OVERVIEW
6.13.2 FUSING UNIT DRIVE AND RELEASE MECHANISM
6.13.3 FUSING ENTRANCE GUIDE SHIFT
6.13.4 PRESSURE ROLLER
6.13.5 FUSING TEMPERATURE CONTROL
6.13.6 OVERHEAT PROTECTION
6.14 DUPLEX UNIT
6.14.1 OVERALL
6.14.2 DRIVE MECHANISM
6.14.3 BASIC OPERATION
6.14.4 FEED IN AND EXIT MECHANISM
6.15 ENERGY SAVER MODES OF BASIC MACHINES
6.15.1 OVERVIEW
6.15.2 AOF
6.15.3 TIMERS
6.15.4 RECOVERY
6.16 ENERGY SAVER MODES OF DDST MACHINES
6.16.1 OVERVIEW
6.16.2 AOF
6.16.3 TIMERS
6.16.4 RECOVERY
SPECIFICATIONS
7. SPECIFICATIONS
7.1 GENERAL SPECIFICATIONS
7.2 SUPPORTED PAPER SIZES
7.2.1 ORIGINAL SIZE DETECTION
7.2.2 PAPER FEED AND EXIT
7.3 MACHINE CONFIGURATION
7.4 OPTIONAL EQUIPMENT
7.4.1 ARDF
SM vii B245/B276/B277
7.4.2 ADF
7.4.3 ONE-TRAY PAPER TRAY UNIT
7.4.4 TWO-TRAY PAPER TRAY UNIT
7.4.5 ONE-BIN TRAY
DOCUMENT FEEDER (B813)
SEE SECTION B813 FOR DETAILED TABLE OF CONTENTS
ARDF (B814)
SEE SECTION B814 FOR DETAILED TABLE OF CONTENTS
DDST UNIT (B865/B866)
SEE SECTION B865/B866 FOR DETAILED TABLE OF CONTENTS
MFP EXPANSION CONTROLLER BOX/PRINTER
SCANNER/FAX (B843/B867/B868)
SEE SECTION B843/B867/B868 FOR DETAILED TABLE OF CONTENTS
PRINTER/SCANNER UNIT (B867)
SEE SECTION B867 FOR DETAILED TABLE OF CONTENTS
FAX OPTION (B868)
SEE SECTION B868 FOR DETAILED TABLE OF CONTENTS
INSTALLATION
DOCUMENT FEEDER B813
ARDF B814
FAX OPTION B868
PREVENTIVE MAINTENANCE
REPLACEMENT AND ADJUSTMENT
TROUBLESHOOTING
DDST UNIT B865/B866
PRINTER/SCANNER UNIT B867
MFP EXPANSION B843/B867/B868
SERVICE TABLES
DETAILED DESCRIPTIONS
SPECIFICATIONS
POSITION 2
POSITION 1
POSITION 3
POSITION 4
POSITION 6
POSITION 5
POSITION 8
POSITION 7
B245/B276/B277
PARTS CATALOG
002707MIU
B245/B276/B277
TABLE OF CONTENTS
B245/B276/B277 PARTS LOCATION AND LIST
Location of Unit
1.EXTERIOR 1
2.EXTERIOR 2
3.OPERATION PANEL
4.OPTICS SECTION 1
5.OPTICS SECTION 2
6.OPTICS SECTION 3
7.LASER UNIT
8.BY-PASS FEED SECTION
9.PAPER CASSETTE
10.PAPER REGISTRATION
11.1ST PAPER FEED SECTION
12.2ND PAPER FEED SECTION (B277)
13.VERTICAL TRANSPORT (B277)
14.PCU 1
15.PCU 2
16.TONER SUPPLY UNIT
17.FUSING UNIT
18.PAPER EXIT SECTION
19.DUPLEX UNIT 1 (B277)
20.DUPLEX UNIT 2 (B277)
21.DUPLEX UNIT 3 (B277)
22.DRIVE SECTION
23.ELECTRICAL SECTION 1
24.ELECTRICAL SECTION 2
25.FRAME SECTION 1
26.FRAME SECTION 2 (B277)
27.DDST UNIT
28.BICU BOARD (B245)
29.BICU BOARD (B276/B277)
30.DECAL AND DOCUMENT
31.SPECIAL TOOLS
B245/B276/B277 PARTS INDEX
PARTS INDEX
B384 PAPER TRAY UNIT PS450 PARTS LOCATION AND
1.EXTERIOR (B384)
2.PAPER TRAY (B384)
3.PAPER FEED/TRANSFER (B384)
4.ELECTRICAL SECTION 1 (B384)
5.ELECTRICAL SECTION 2 (B384)
6.ELECTRICAL SECTION 3 (B384)
7.DECAL AND DOCUMENT (B384)
B384 PAPER TRAY UNIT PS450 PARTS INDEX
PARTS INDEX
B385 PAPER TRAY UNIT PS460 PARTS LOCATION AND
LIST
1.EXTERIOR (B385)
2.PAPER TRAY (B385)
3.PAPER FEED SECTION (B385)
4.ELECTRICAL/DRIVE SECTION (B385)
5.DECAL AND DOCUMENT (B385)
B385 PAPER TRAY UNIT PS460 PARTS INDEX
PARTS INDEX
B406 PLATEN COVER TYPE 1018 PARTS LOCATION AND
1.Platen Cover Type 1018 (B406)
B406 PLATEN COVER TYPE 1018 PARTS INDEX
PARTS INDEX
B621 SORTER PT340 PARTS LOCATION
AND LIST
1.1BIN TRAY (B621)
B621 SORTER PT340 PARTS INDEX
PARTS INDEX
B813 DOCUMENT FEEDER DF2000 PARTS LOCATION
AND LIST
1.Exterior (B813)
2.Original Feed Section 1 (B813)
3.Original Feed Section 2 (B813)
4.Original Transfer And Frame (B813)
5.Electrical Section (B813)
6.Decals And Documents (B813)
B813 DOCUMENT FEEDER DF2000 PARTS INDEX
PARTS INDEX
B814 DOCUMENT FEEDER DF2010 PARTS
LOCATION AND LIST
1.ARDF 1 (B814)
2.ARDF 2 (B814)
3.ARDF 3 (B814)
4.ARDF 4 (B814)
5.ARDF 5 (B814)
6.ARDF 6 (B814)
7.ARDF 7 (B814)
8.Decals And Documents (B814)
B814 DOCUMENT FEEDER DF2010 PARTS
PARTS INDEX
B843-17 FEATURE EXPANSION BOARD TYPE 2000 PARTS
LOCATION AND LIST
1.Feature Expansion Board 1 (B84317)
2.Feature Expansion Board 2 (B84317)
3.Controller Board (B84317)
B843-17 FEATURE EXPANSION BOARD TYPE 2000 PARTS
PARTS INDEX
B865/B866 PRINTER/SCANNER DDTS UNIT TYPE A/B
PARTS LOCATION AND LIST
1.DDST Unit (B865/B866)
B865/B866 PRINTER/SCANNER DDTS UNIT TYPE A/B
PARTS INDEX
PARTS INDEX
B867 PRINTER/SCANNER UNIT TYPE 2000 PARTS
LOCATION AND LIST
1.Printer/Scanner Unit (B867)
B867 PRINTER/SCANNER UNIT TYPE 2000 PARTS
PARTS INDEX
B868 FAX OPTION TYPE 2000 PARTS LOCATION AND LIST
1.Fax Option (B868)
B868 FAX OPTION TYPE 2000 PARTS INDEX
PARTS INDEX
B245/B276/B277 3 Parts Location and List
LOCATIONS OF UNITS LOCATIONS OF UNITS
1. EXTERIOR 1
See Page 9
2. EXTERIOR 2
See Page 11
3. OPERATION PANEL
See Page 13
LOCATIONS OF UNITS
4. OPTICS SECTION 1
See Page 15
LOCATIONS OF UNITS
5. OPTICS SECTION 2
See Page 17
LOCATIONS OF UNITS
6. OPTICS SECTION 3
See Page 19


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