Konica Minolta Bizhub 20P Service Manual

Service Manual Konica Minolta Bizhub 20P;
This manual is in the PDF format and have detailed Diagrams, pictures and full procedures to diagnose and repair your Konica Minolta Bizhub 20P copier.
You can print, zoom or read any diagram, picture or page from this Service Manual. Every chapter on this manual is fully detailed and contain all theĀ  simulation codes, trouble codes, maintenance procedures, reset procedures, diagnose procedures of Konica Minolta Bizhub 20P photocopier. You can find easily everything what do you need.
To see what contain, please read table of contents:

CHAPTER 1. SPECIFICATIONS
This chapter lists the specifications of each model, which enables you to make a comparison
of different models.
1. COMPONENTS
2. SPECIFICATIONS LIST
2.1 Printing
2.2 Functions
2.3 Electronics and Mechanics
2.4 Network Connectivity
2.5 Service Information
2.6 Paper
2.6.1 Paper handling
2.6.2 Media specifications
2.6.3 Type and size of paper
2.7 Printable Area
2.8 Print Speeds with Various Settings

CHAPTER 2. THEORY OF OPERATION
This chapter gives an overview of the printing mechanisms as well as the sensors, actuators,
and control electronics. It aids in understanding the basic principles of operation as well as
locating defects for troubleshooting
1. OVERALL
1.1 General Block Diagram
2. ELECTRONICS
2.1 General Block Diagram
3. MECHANICS
3.1 Cross-section Drawing
3.2 Cross-section Drawing
3.2.1 Plate-up Function of the Paper Tray
3.2.2 Paper supply
3.2.3 Paper registration
3.2.4 Paper eject
3.2.5 Duplex printing
3.2.6 Paper feeding from the MP tray
3.2.7 Paper feeding from the tray 2 / tray 3
3.3 Toner Cartridge
3.3.1 Methods for Detecting and Counting Toner Life
3.3.2 Cartridge life
3.3.3 New toner detection
3.4 Print
3.4.1 Basic Principle
3.4.2 Print Process
3.5 Sensors position

CHAPTER 3. ERROR INDICATION AND TROUBLESHOOTING
This chapter details error messages and codes that the incorporated self-diagnostic
functions display if any error or malfunction occurs. If any error message appears, refer to
this chapter to find which components should be checked or replaced.
The latter half of this chapter provides sample problems that could occur in the main sections
of the machine and related troubleshooting procedures. This will help service personnel
pinpoint and repair defective components.
1. INTRODUCTION
1.1 Precautions
1.2 Part names
1.3 Initial Check
2. DISTINGUISH ERROR CAUSE
2.1 LED indication
2.1.1 LED indication at Operator Calls
2.1.2 LED indication at Service Calls
2.2 Error Cause and Remedy
3. PAPER FEEDING PROBLEMS
3.1 No Feeding
3.2 Double Feeding
3.3 Paper Jam
3.4 Dirt on Paper
3.5 Wrinkles or creases
3.6 Waves in the paper / folds in the paper at the eject roller 2
3.8 Prints only single side of the paper when duplex-printing
4. TROUBLESHOOTING FOR PRINT IMAGE DEFECT
4.1 Image Defect Examples
4.2 Diameter of Rollers
4.3 Troubleshooting for Image Defect
5. SOFTWARE SETTING PROBLEMS
6. NETWORK PROBLEMS

CHAPTER 4. PERIODICAL MAINTENANCE
1. PERIODICAL MAINTENANCE PARTS
1.1 Periodical Maintenance Parts
1.2 Procedures to Replace Periodical Maintenance Parts
1.2.1 Fuser unit and laser unit
1.2.2 Paper feeding kit for tray 1, 2, 3
1.2.3 Paper feeding kit for MP tray

CHAPTER 5. DISASSEMBLY/REASSEMBLY
This chapter details procedures for disassembling and reassembling the machine together
with related notes. The disassembly order flow provided enables you to see at a glance the
quickest way to get to component(s) involved.
At the start of a disassembly job, you check the disassembly order flow that guides you
through a shortcut to the object components.
This chapter also covers screw tightening torques and lubrication points to which the
specified lubricants should be applied during reassembly jobs.
1. SAFETY PRECAUTIONS
2. SCREW TORQUE LIST
3. LUBRICATION
5. GEAR LAYOUT DRAWING
6. HARNESS ROUTING
7. DISASSEMBLY FLOW CHART
8. DISASSEMBLY PROCEDURE
8.1 Paper Tray
8.2 Back Cover
8.3 Rear Chute ASSY
8.4 Fuser Unit
8.5 Tray MP ASSY
8.6 MP Tray Cover ASSY/Process Cover ASSY/Emblem cover
8.7 Access Cover/Side Cover L
8.8 Main PCB
8.9 Side Cover R
8.10 Top Cover ASSY
8.10.1 Panel PCB ASSY
8.10.2 SW Key A/B
8.10.3 Inner Chute/Pinch Roller Holder
8.11 Gear Plate Calking ASSY/Develop Joint/Main Motor ASSY
8.12 Main Shield Plate ASSY
8.13 Relay Rear PCB ASSY/Connector
8.14 Relay Front PCB ASSY
8.15 Drive Release Link
8.16 MP Solenoid ASSY
8.17 Tray 1 Solenoid ASSY
8.18 Toner Sensor PCB ASSY
8.19 Register Solenoid
8.20 Ejector Solenoid
8.21 Front cover sensor ASSY
8.22 New Toner Actuator
8.23 Gear 17/20/23
8.24 Filter
8.25 Laser Unit
8.26 LVPS PCB Unit
8.27 High-Voltage PS PCB ASSY
8.28 Toner LED PCB Unit ASSY
8.29 Fan Motor 60 Unit
8.30 Fan Motor 60 Unit LV
8.31 FRAME L ASSY
8.32 MP Unit
8.33 Regist Actuator Rear/Regist Actuator Spring
8.34 Regist Actuator Front/Regist Actuator Spring
8.35 Roller Holder ASSY
8.36 PE Actuator/Edge Actuator/Edge Actuator Spring
8.37 PE EG Sensor ASSY
9. DISASSEMBLY PROCEDURE (PF-P10)
9.1 Paper Tray
9.2 LT Front Cover ASSY
9.3 LT Rear Cover
9.4 LT Side Cover L
9.5 LT Side Cover R
9.6 LT PCB ASSY
9.7 Connector: 55533-1219
9.8 Connector: 54702-1219
9.9 Gear 24 LT
9.10 Collar 6
9.11 LT Solenoid ASSY
9.12 Roller Holder ASSY
9.13 Edge Actuator Spring
9.14 PE Actuator , Edge Actuator
9.15 LT Sensor PCB ASSY

CHAPTER 6. SERVICE MODE
The maintenance mode is exclusively designed for the purpose of checks, settings and
adjustments using the buttons on the control panel or open/close of the front cover. You can
perform operational checks of panel PCB, sensors, perform a print test, display the log
information or error codes.
1. CONTROL PANEL
1.1 List of service support functions
1.2 User Mode
1.3 Service Mode
2. OTHER SERVICE FUNCTIONS
2.1 Drum condensation countermeasure mode
2.2 Print Settings

CHAPTER 7. CIRCUIT DIAGRAMS, WIRING DIAGRAM
This chapter provides the circuit diagrams of the High-voltage power supply PCB and LVPS
PCB and the wiring diagrams that help you understand the connections between PCBs.
1. CIRCUIT DIAGRAMS
2. WIRING DIAGRAM

DELETION OF USER SETTING INFORMATION, etc.
SCREW CATALOGUE
REFERENCES
GLOSSARY

Number of pages: 283.