Konica Minolta Bizhub 4050 Bizhub 4750 Service Manual

Service Manual Konica Minolta Bizhub 4050 Bizhub 4750;
This manual is in the PDF format and have detailed Diagrams, pictures and full procedures to diagnose and repair your Konica copier.
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To see what contain, please read table of contents:

Table of Contents
REVISION
A) SAFETY AND IMPORTANT WARNING ITEMS
1. IMPORTANT NOTICE
2. DESCRIPTION ITEMS FOR DANGER, WARNING AND CAUTION
2.1 Description items in this Service Manual
2.2 Description items for safety and important warning items
3. SAFETY WARNINGS
3.1 MODIFICATIONS NOT AUTHORIZED BY KONICA MINOLTA, INC
3.1.1 Actions requiring special attention
3.2 POWER PLUG SELECTION
3.2.1 Power Cord Set or Power Plug
3.3 CHECKPOINTS WHEN PERFORMING ON-SITE SERVICE
3.3.1 Power Supply
3.3.2 Installation Requirements
3.3.3 After Service
3.4 FUSE
3.5 Used Batteries Precautions
3.5.1 ALL Areas
3.5.2 Germany
3.5.3 France
3.5.4 Denmark
3.5.5 Finland, Sweden
3.5.6 Norway
3.6 Laser Safety
3.6.1 Laser Safety
3.6.2 Internal Laser Radiation
3.6.3 Laser Safety Label
3.6.4 PRECAUTIONS FOR HANDLING THE LASER EQUIPMENT
4. WARNING INDICATIONS ON THE MACHINE
4.1 Warning indications inside the machine
4.2 Warning indications on the boards
5. MEASURES TO TAKE IN CASE OF AN ACCIDENT

B) NOTATION OF THE CONTENTS
1. NOTATION OF THE CONTENTS
1.1 Product name
1.2 Brand name
1.3 Feeding direction

C) PRODUCT SPECIFICATIONS
1. Bizhub 4750/4050
1.1 Type
1.2 Functions
1.3 Paper
1.4 Materials
1.4.1 Conditions for defining the life value for the field standard yield
1.5 Print volume
1.6 Machine specifications
1.7 Operating environment
1.8 Print functions
1.9 Scan Functions
2. PF-P11/PF-P12
2.1 Type
2.2 Media type
2.3 Machine specifications
2.4 Operating environment
3. FS-P02
3.1 Type
3.2 Paper specifications
3.3 Machine specifications
3.4 Operating environment
4. FK-512
5. i-Option (LK-106/107/108/111)
5.1 List of advanced functions
5.2 Activation procedures of i-Option

D) OVERALL COMPOSITION
1. SYSTEM CONFIGURATION
2. SECTION CONFIGURATION
3. PAPER PATH
3.1 ADF Section
3.2 Printer Section
4. CONTROL BLOCK DIAGRAM
5. IMAGE CREATION PROCESS

E) SERVICE TOOL
1. Bizhub 4750/4050
1.1 Service material list
1.2 Utility tool
1.2.1 IC card information setting tool of AU-201/AU-201H/AU-202H/SCL-010/YSoft card reader

F) PERIODICAL MAINTENANCE
1. Inspection guide
2. Scheduled maintenance
2.1 Maintenance kit
2.2 Resetting the maintenance counter
3. Periodical maintenance procedure bizhub 4750/4050
3.1 Fuser
3.1.1 Fuser removal
3.2 Redrive assembly
3.2.1 Redrive assembly removal
3.3 ACM pick tire
3.3.1 ACM pick tire removal
3.4 Transfer roll
3.4.1 Transfer roll removal
3.5 Separator roll assembly removal
3.6 MPF pick roll and separator pad
3.6.1 MPF pick roller removall
3.6.2 Separator pad removal

G) DISASSEMBLING/REASSEMBLING
1. Removal precautions
1.1 Data security notice
1.2 Handling ESD-sensitive parts
1.3 Lithium battery
1.4 Ribbon cable connectors
1.4.1 Zero Insertion Force (ZIF) connectors
1.4.2 Low Insertion Force (LIF) connector
1.5 Printhead unit adjustments
1.5.1 Printhead unit mechanical adjustment
1.5.2 Printhead unit electronic adjustment
2. Removal procedures
3. Left side removals
3.1 Left cover removal
3.2 Main drive gearbox removal
3.3 MPF gearbox removal
3.4 Reverse solenoid removal
3.5 Cartridge gearbox removal
3.6 Duplex gear assembly removal
4. Right side removals
4.1 Right cover removal
4.2 Memory access cover removal
4.3 Tray present sensor removal
4.4 Cooling fan removal
4.5 Hard disk removal
4.6 FAX board assy removal
4.7 Controller board shield removal
4.8 Controller board removal
4.9 Toner cartridge smart chip contact removal
5. Front removals
5.1 Left front mount removal
5.2 Right front mount removal
5.3 Cartridge plunger removal
5.4 Name plate cover removal
5.5 Front bin cover removal
5.6 Control panel assembly removal
5.7 USB cable bracket removal
5.8 Speaker removal
5.9 Control panel cover removal
5.10 MPF tray removal
5.11 MPF pick roller cover removal
5.12 Bail removal
5.13 Jam access cover removal
5.14 Front access cover removal
5.15 Front door sensor removal
5.16 Front input guide removal
6. Bottom removals
6.1 Power supply removal
6.2 Power supply shield removal
6.3 Duplex removal
6.4 Duplex sensor and input sensor removal
6.5 Index sensor removal
6.6 Media present sensor removal
6.7 Toner density sensor removal
6.8 Trailing edge sensor removal
6.9 Media present flag removal
6.10 Pick/lift motor gearbox removal
6.11 Tray guide removal
6.11.1 Left guide
6.11.2 Right guide
7. Rear side removals
7.1 Rear exit door removal
7.2 Rear cover removal
7.3 Stapler cable removal
7.4 Diverter spring removal
7.5 Diverter cover removal
8. Top side removals
8.1 Top cover removal
8.2 Printhead unit removal
8.3 Bin full sensor/lens removal
8.4 Bin full sensor cable removal
9. ADF/scanner removals
9.1 ADF separator roll removal
9.2 Flatbed cushion removal
9.3 Scanner front cover removal
9.4 ADF input tray removal
9.5 ADF unit removal
9.6 Scanner assembly removal
9.7 ADF top cover assembly
9.8 ADF cable removal
9.9 USB cable removal
9.10 USB wireless cable removal
9.11 ADF hinge removal
9.12 Flatbed assembly removal
9.13 Control panel ribbon cable removal
9.14 Speaker cable removal
9.15 Restraint pad removal
10. 250/550-sheet option tray removals
10.1 Pick roller removal
10.2 Separator roll assembly removal
10.3 ACM assembly removal
11. Staple finisher option removals
11.1 Staple finisher option removal
11.2 Stapler cartridge access door removal
11.3 Staple roll holder removal
11.4 Stapler right cover removal
11.5 Stapler left cover removal
11.6 Stapler rear door removal
11.7 Sensor (stapler access door) removal
11.8 Stapler carriage assembly removal
11.9 Stapler door close limit switch removal
11.10 Stapler paddle motor removal
11.11 Stapler rear cover removal
11.12 Sensor (stapler rear cover) removal
11.13 Trapped staple access door removal
11.14 Stapler service cover removal
11.15 Stapler controller board removal
11.16 Stapler left tamper motor removal
11.17 Stapler right tamper motor removal
11.18 Stapler rear cover close limit switch removal
11.19 Stapler cooling fan removal
11.20 Stapler power supply unit removal
11.21 Stapler interface cable removal
11.22 Stapler top cover removal
11.23 Sensor (stapler bin full receive) removal
11.24 Sensor (stapler bin full send) removal
11.25 Sensor (stapler pass through) removal
11.26 Tamper main assembly removal
11.27 Tamper sub-assembly removal
11.28 Tamper drive belt removal
11.29 Diverter gearbox removal
11.30 Stapler accumulator assembly removal
11.31 Sensor (stapler right tamper HP) removal
11.32 Sensor (stapler left tamper HP) removal
11.33 Sensor (stapler paddle HP) removal

H) CLEANING/LUBRICATION
1. Lubrication specification
2. Cleaning the printer
3. Cleaning the scanner glass

I) ADJUSTMENT/SETTING
1. HOW TO USE THE ADJUSTMENT SECTION
1.1 Advance checks
2. Utility
2.1 List of utility mode
List of utility mode – outline
2.1.1 Accessibility
2.1.2 One-Touch/User Box Registration
2.1.3 User Settings
2.1.4 Administrator Settings – System Settings
2.1.5 Administrator Settings – Administrator/Machine Settings
2.1.6 Administrator Settings – Address Registration List
2.1.7 Administrator Settings – User Authentication/Account Track
2.1.8 Administrator Settings – Network Settings
2.1.9 Administrator Settings – Copier Settings
2.1.10 Administrator Settings – Printer Settings
2.1.11 Administrator Settings – Fax Settings
2.1.12 Administrator Settings – System Connection
2.1.13 Administrator Settings – Security Settings
2.1.14 Administrator Settings – Paper Empty Alert Display Setting
2.1.15 Administrator Settings – License Management
2.1.16 Administrator Settings – OpenAPI Certification Management Setting
2.1.17 Check Consumable Life
2.2 Starting/Exiting
2.2.1 Starting procedure
2.2.2 Exiting procedure
2.3 Restore Defaults
Restore Defaults – outline
2.3.1 Accessibility
2.3.2 One-Touch/User Box Registration
2.3.3 User Settings
2.3.4 Administrator Settings – System Settings
2.3.5 Administrator Settings – Administrator/Machine Settings
2.3.6 Administrator Settings – Address Registration List
2.3.7 Administrator Settings – User Authentication/Account Track
2.3.8 Administrator Settings – Network Settings
2.3.9 Administrator Settings – Copier Settings
2.3.10 Administrator Settings – Printer Settings
2.3.11 Administrator Settings – Fax Settings
2.3.12 Administrator Settings – System Connection
2.3.13 Administrator Settings – Security Settings
2.3.14 Administrator Settings – Paper Empty Alert Display Setting
2.3.15 Administrator Settings – License Management
2.3.16 Administrator Settings – OpenAPI Certification Management Setting
2.3.17 Check Consumable Life
3. LIST OF SERVICE MODE
3.1 List of service mode (outline)
3.2 List of service mode (detail)
3.2.1 Machine
3.2.2 Imaging Process Adjustment
3.2.3 CS Remote Care
3.2.4 System 1
3.2.5 System 2
3.2.6 Counter
3.2.7 List Output
3.2.8 State Confirmation
3.2.9 Test Mode
3.2.10 ADF Adjustment
3.2.11 Fax Settings
3.2.12 Firmware Update
4. SERVICE MODE
4.1 Starting/Exiting
4.1.1 Starting procedure
4.1.2 Exiting procedure
4.2 Machine
4.2.1 Printer Adjustment
4.2.2 Scanner Area
4.3 Firmware Version
4.3.1 Use
4.3.2 Procedure
4.4 Imaging Process Adjustment
4.4.1 Fusing Temperature
4.4.2 Transfer Voltage Fine Adj
4.4.3 Thick Paper/1200dpi
4.4.4 Engine Density Adjustment
4.4.5 Monochrome Density Adj
4.4.6 Paper separation adjustment
4.4.7 Grad/Dev AC Bias V Selection
4.5 CS Remote Care (Outlines)
4.6 Setting up the CS Remote Care
4.6.1 Using the Fax line modem
4.6.2 Using E-mail
4.6.3 When using a WebDAV server in http communication
4.7 Calling the maintenance
4.7.1 When starting the maintenance
4.7.2 When finishing the maintenance
4.8 Calling the center from the administrator
4.9 Checking the transmission log
4.10 Detail on settings for CS Remote Care
4.10.1 Maintenance/Default Settings – System Selection
4.10.2 Maintenance/Default Settings – ID Code
4.10.3 Maintenance/Default Settings – Initial Transmission
4.10.4 Detail Settings – Basic Settings
4.10.5 Detail Settings – Date & Time Setting
4.10.6 Detail Settings – RAM Clear
4.10.7 Detail Settings – Communication Log Print
4.10.8 Detail Settings – Response Timeout
4.10.9 Detail Settings – Notification Setting
4.10.10 Server Settings – Email Settings
4.10.11 Server Settings – HTTP Settings
4.10.12 Server Settings – Data Initialize
4.10.13 Software Switch Setting
4.11 System 1
4.11.1 Fax Target
4.11.2 Tel/Fax Number
4.11.3 Serial Number Display
4.11.4 Sleep ON/OFF Choice Setting
4.11.5 Install Date
4.11.6 Machine State LED Setting
4.11.7 TP Level
4.12 System 2
4.12.1 Unit Change
4.12.2 Warning Detection
4.12.3 Software Switch Setting
4.12.4 Network Fax Settings – Internet Fax
4.12.5 Coverage Rate Confirmation Screen
4.12.6 Change Application Settings
4.13 Counter
4.13.1 Life – New Release
4.13.2 Non Genuine Toner
4.14 List Output
4.14.1 Management List
4.14.2 Adjustments List
4.14.3 Parameter List
4.14.4 Service Parameter
4.14.5 Protocol Trace
4.14.6 Fax Analysis List
4.14.7 Halftone 64
4.14.8 Halftone 128
4.14.9 Halftone 256
4.14.10 Gradation
4.15 State Confirmation
4.15.1 Sensor Check
4.15.2 Paper Passage Test
4.15.3 Memory/HDD State
4.15.4 Load Check
4.15.5 Component Check
4.16 Test Mode
4.16.1 Fax Test-Signal Send Test
4.16.2 Fax Test-Signal Receive Test
4.16.3 Fax Test-NCU TEST
4.16.4 Fax Test – Dial Test
4.17 ADF Adjustment
4.17.1 Original Stop Position – Sub Scanning Direction 1-Side
4.17.2 Original Stop Position – Sub Scanning Direction 2-Side
4.17.3 Original Stop Position – Main Scanning Direction 1-side
4.17.4 Original Stop Position – Main Scanning Direction 2-side
4.17.5 Feed Zoom
4.17.6 FD-Mag. Adj. (B)
4.17.7 Main Scanning Direction Zoom
4.17.8 Main Scanning Direction Zoom(B)
4.18 FAX Setting
4.18.1 Modem/NCU
4.18.2 Network
4.18.3 System
4.18.4 Fax File Format
4.18.5 Communication
4.18.6 List Output
4.18.7 Function Parameter
4.18.8 Initialization
4.18.9 Line Standard Setting
4.19 FAX setting (Address parameter list)
4.19.1 0b00##
4.19.2 0e000#
4.19.3 0e001#
4.19.4 0e002#
4.19.5 0e003#
4.19.6 0e004#
4.19.7 0e005#
4.19.8 0e009#
4.19.9 0e00a#
4.19.10 0e00b#
4.19.11 0e00c#
4.19.12 0e00d#
4.19.13 0e00e#
4.19.14 0e00f#
4.19.15 0e010#
4.19.16 0e011#
4.19.17 0e012#
4.19.18 0f000#
4.19.19 0f001#
4.19.20 10000#
4.19.21 10001#
4.19.22 12000#
4.19.23 13000#, 13001#, 13002#, 13003#, 13004#, 13005#, 13006#
4.19.24 13007#, 13008#, 13009#, 1300a#, 1300b#
4.20 Firmware Update
4.20.1 Check Settings
4.20.2 Execute
4.21 Loadable Drive information
4.21.1 Use
4.21.2 Procedure
4.22 Lodable Driver Download
4.22.1 Use
4.22.2 Required systems
4.22.3 Writing data to USB memory device
4.22.4 Procedure
5. Security Service Mode
5.1 List of Security Service Mode
5.2 Starting/Exiting
Starting procedure
Exiting procedure
5.3 Billing Setting
5.3.1 Counter Setting
5.3.2 OpenAPI Certification Management Setting – Restriction Code Settings
5.3.3 License Management – Activation
5.3.4 License Management – Deactivation
5.3.5 License Management – Initialize
5.3.6 License Management – Get Request Code
5.3.7 License Management – List
5.3.8 License Management – List of Enabled Functions
5.4 Administrator Password
5.4.1 Use
5.4.2 Default setting
5.4.3 Procedure
5.5 CE Password
5.5.1 Use
5.5.2 Default setting
5.5.3 Procedure
5.6 Life Stop
5.6.1 Use
5.6.2 Default setting
5.6.3 Setting item
5.7 Engine Data Backup
5.7.1 Use
5.7.2 Procedure
6. Extra Service Mode
6.1 List of Extra Service Mode
6.2 Starting/Exiting
6.2.1 Starting procedure
6.2.2 Exiting procedure
7. FAX PROTOCOLS
7.1 G3 ECM (G3 Error Correction Mode)
7.2 Line control
7.2.1 Procedure of G3 mode communication
7.3 Table of reference code
7.4 How to analyze the T30 protocol monitor

J) REWRITING OF FIRMWARE
1. Checking the current firmware version
2. Firmware upgrading procedure by USB memory device
2.1 Preparations for firmware upgrading
2.1.1 System requirements
2.1.2 Saving the firmware data into the USB memory device
2.1.3 How to write firmware data
3. How to install the i-Option data
3.1 Available function for i-Option
3.2 LK-107/LK-108 font data installation procedure
3.2.1 When the font data is ***.pdf format file

K) TROUBLESHOOTING
1. JAM DISPLAY
1.1 JAM display
1.2 List of JAM display
1.2.1 JAM display resetting procedure
1.3 Sensor layout
1.3.1 Main Unit
1.3.2 ADF
1.4 Solution
1.4.1 Initial check items
1.4.2 Misfeed at manual bypass feed section
1.4.3 Misfeed at tray 1 feed section
1.4.4 Misfeed at tray 2 feed section
1.4.5 Misfeed at tray 3 feed section
1.4.6 Misfeed at tray 4 feed section
1.4.7 Misfeed at image transfer section
1.4.8 Misfeed at exit section
1.4.9 Misfeed at ADF section
1.4.10 Misfeed at finisher section
1.4.11 Misfeed at staple finisher section
1.4.12 Misfeed at duplex pre-registration section
2. PROCESS CAUTION INFROMATION
2.1 Display procedure
2.2 List
2.3 Solution
2.3.1 LD error
2.3.2 IDC sensor error
2.3.3 K IU error
2.3.4 CCD clamp gain error
3. TROUBLE CODE
3.1 Trouble code (Service Call)
3.2 Trouble resetting procedure
3.2.1 Trouble resetting procedure by Trouble Reset key
3.2.2 Trouble resetting procedure by remote operation
3.3 List of the trouble code
3.4 Solution
3.4.1 0202
3.4.2 0204
3.4.3 0206
3.4.4 0208
3.4.5 1109
3.4.6 2201
3.4.7 2350
3.4.8 2564
3.4.9 2A94
3.4.10 3423
3.4.11 4091
3.4.12 4501
3.4.13 4901
3.4.14 5102
3.4.15 5501
3.4.16 5601
3.4.17 6751
3.4.18 679#
3.4.19 7A00
3.4.20 9401
3.4.21 C151
3.4.22 D004
3.4.23 D091
3.4.24 D092
3.4.25 D093
3.4.26 D094
3.4.27 D095
3.4.28 D096
3.4.29 D501
3.4.30 E30#
4. ABORT CODE
4.1 Troubleshooting of the abort code
4.1.1 Contents
4.1.2 Procedure
4.2 FB0#
4.3 FB1#
5. FAX TROUBLE CODE
5.1 The error in the transmission/reception system
5.2 B0##
5.3 B11#
5.4 B12#
5.5 B13#
5.6 B14#
5.7 B15#
5.8 B16#
5.9 B17#
5.10 B18#
5.11 B19#
5.12 T0#
5.13 T1#
5.14 T2#
5.15 T3#
5.16 T4#
5.17 T5#
5.18 T6#
5.19 T7#
5.20 T8#
5.21 T9#
5.22 R0#
5.23 R1#
5.24 R2#
5.25 R3#
5.26 R4#
5.27 R5#
5.28 R6#
5.29 R7#
5.30 R8#
5.31 R9#
6. POWER SUPPLY TROUBLE
6.1 Machine is not energized at all (PU operation check)
6.2 Operation panel indicators do not light
7. IMAGE QUALITY PROBLEM
7.1 How to identify problematic part
7.1.1 Initial check items
7.2 Solution
7.2.1 Scanner system: white lines, white bands, black lines and black bands in sub scan direction
7.2.2 Scanner system: white lines, white bands, black lines and black bands in main scan direction
7.2.3 Scanner system: black spots
7.2.4 Scanner system: fog
7.2.5 Scanner system: blurred image, blotchy image
7.2.6 Scanner system: moire
7.2.7 Scanner system: skewed image
7.2.8 Scanner system: distorted image
7.2.9 Scanner system: low image density, rough image
7.2.10 Scanner system: blank copy, black copy
7.2.11 Printer: white lines and white bands in sub scan direction
7.2.12 Printer: white lines and white bands in main scan direction
7.2.13 Printer: uneven density in sub scan direction
7.2.14 Printer: uneven density in main scan direction
7.2.15 Printer: low image density
7.2.16 Printer: gradation reproduction failure
7.2.17 Printer: foggy background
7.2.18 Printer: void areas, white spots
7.2.19 Printer: black spots
7.2.20 Printer: blurred image
7.2.21 Printer: blank copy, black copy
7.2.22 Printer: uneven image

L) PARTS/CONNECTOR LAYOUT DRAWING
1. PARTS LAYOUT DRAWING
1.1 Bizhub 4750/4050
1.2 FS-P02 (Option)

N) WIRING DIAGRAM
1. Bizhub 4750/4050
1.1 Bizhub 4750/4050

O) THEORY OF OPERATION Bizhub 4750/4050
1. Paper path information
1.1 Input tray
1.2 Multipurpose feeder (MPF)
1.3 Simplex printing
1.4 Duplex printing
2. Media handling components
2.1 Main drive gearbox
2.2 Autocompensator mechanism (ACM)
3. Key components
3.1 Sensors
3.2 Other key components
4. Electrophotographic process (EP process)
4.1 Printhead
4.2 Step 1: Charge
4.3 Step 2: Expose
4.4 Step 3: Develop
4.5 Step 4: Transfer
4.6 Step 5: Clean
5. ADF theory
5.1 ADF theory of operation