Main
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CONTENTS
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1.1.4.2. Margins and Print Area
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1.7. Print Process
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1.8. Paper Feed
1.9. Laser Scan Unit ( Exposure )
1.9.1. Operation Theory
1.9.2. Laser Beam
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1.10. Fuser Unit
1.11. Paper Ejection and Paper Switchback
2 Installation, Setup, and Repacking
2.1. Installation Requirements
2.1.1. Environment
2.1.2. Ventilation Requirements
2.2. Setup
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2.3. Repacking
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3.2. Right, Left and Top Covers
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3.5. High Voltage Board and Power Supply Unit
3.5.1. High Voltage Board
3.5.2. Power Supply Unit
3.5.3. Power Supply Unit Disassembly
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3.7.2. Toner Empty Sensor Board
3.8. 2nd Feeder I / F Board and Main Control Board
3.8.1. 2nd Feeder I / F Board and Main Control Board
3.8.2. Main Control Board Disassembly
3.9. Fuser Drive Gear
3.10. Fan Motor
3.11. Gear Support Bracket, Relay Board ( A ), Motor, Drive Gear Unit and Paper Empty Sensor Board
3.11.1. Gear Support Bracket
3.11.2. Relay Board ( A ), Drive Gear Unit and Motor
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3.12. Upper Exit Roller Holder
3.12.1. Upper Exit Roller Holder
3.12.1.1. Upper Exit Roller Holder Disassembly
3.13. Fuser Unit
3.13.1. Fuser Unit Disassembly
3.13.2. Heat Lamp
3.13.3. Heat Roller
3.13.4. Thermostat
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3.14. Pickup, Paper Feed, Registration and Transfer Rollers
3.14.1. Pickup Roller and Pickup Solenoid
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3.15. Transfer Roller Assembly
3.16. Auto Duplex Unit, ADU Registration Roller and ADU Pinch Roller
3.16.1. Auto Duplex Unit ( ADU )
3.16.1.1. Auto Duplex Pinch and Registration Rollers
3.16.1.2. Auto Duplex Disassembly
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3.18. Paper Empty Sensor Lever
4 Electronic Circuit Description and Diagrams
4.1. Block Diagram
CN9
USB I/F
CN4
M
Power Supply Unit Fuser Unit
Board
Main Control Board Engine Control
High Voltage Supply Unit
4.2. Connection Diagram
KX-P7105 / KX-P7110
Drum Unit Transfer Roller Transfer
I/F CN
FAN
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Note: Motor Current will be cut off in case of OFF condition above.
4.4.5. Laser Scanning Unit Control Circuit
4.4.6. Fuser Temperature Control Circuit
4.4.7. High Voltage Control Circuit
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4.4.9. Safety Interlock SW
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4.4.11.5. Toner Empty Sensor Circuit
4.4.12. Fan Control Circuit
4.4.13. 2nd Feeder I / F Circuit
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4.5. Main Control Board
4.5.1. Data Flow
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4.5.5. CPU ASIC ( IC1 ) overview
4.5.5.1. CPU
4.5.5.2. SDRAM I/F
4.5.5.3. ROM I/F
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4.5.5.5. Internal Engine I/F (Main Board - Engine Board)
The communication I/F signal between Main Board and Engine Board in Main Board is as follows.
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4.5.5.8. USB I/F
4.5.5.9. PCI I/F
4.5.5.10. Network I/F ( only for KX-P7110 )
5 Schematic Diagram
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5.1. Main Control Board
1/9
KX-P7105/KX-P7110
1
CPU CIRCUIT BLOCK
2
2/9
(OR MASK ROM)
2
ROM BLOCK
OPTION ROM CN
3/9
HGFEDCB
sd_ras
sd_cs[1-0]
sd_d[15-0]
4/9
<IC6>
21
KX-P7105/KX-P7110
Not Used
5/9
KX-P7105/KX-P7110
IEEE1284 CIRCUIT BLOCK
1
2
6/9
ENGINE I/F, EEPROM, PANEL I/F CIRCUIT BLOCK
KX-P7105/KX-P7110
A
EEPROM
7/9
CPU ICE & JTAG CIRCUIT BLOCK
ICE CONNECTOR
Not Used
Power Regulator Circuit
8/9
CN9
9/9
KX-P7105/KX-P7110
1
D-
USB CIRCUIT BLOCK
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5.2. Engine Control Board
1/3
A
CBA GFED
HGFEDCB
(Engine Control Board)
2/3
HGFEDCB
CBA GFED
(Engine Control Board)
KX-P7105/KX-P7110
3/3
A
Parts Side
C107
C106
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5.3. Sensors, Indicator and Relay Boards
1/1
(Sensors, Indicator and Relay Boards)
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5.4. Paper Empty Sensor Board and 2nd Feeder I / F Board
1/1
180 R450
PJUPB0008Z_c
2
3
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6 Explanation of Connectors
6.1. Main Control Board
6.1.1. CN1 ( Optional PostScript Upgrade Kit I / F Connector )
CN1 (Optional PostScript Upgrade Kit I/F Connector)
6.1.2. CN2 ( Optional RAM Connector )
CN2 (Optional RAM Connector)
CN2
6.1.3. CN3 ( Network Connector )
CN3 (Network Connector)
6.1.4. CN4 ( IEEE 1284 I / F Connector )
CN4 (IEEE 1284 I/F Connector)
6.1.5. CN5 ( Engine I / F Connector )
CN5 (Engine I/F Connector)
6.1.6. CN6 ( Front Panel Connector )
CN6 (Front Panel Connector)
6.1.7. CN9 ( USB I / F Connector )
CN9 (USB I/F Connector)
6.2. Engine Control Board
6.2.1. CN001 ( Video Interface )
CN001 (Video Interface)
6.2.2. CN002 ( LSU Control Signals )
CN003 (OPC Drum Unit Interlock Switch)
CN002 (LSU Control Signals)
6.2.3. CN003 ( OPC Drum Unit Interlock SW )
2 3
+5V 5VGND +5V (LD)
CN005 (PSU-MAIN Connector)
IN
Thermistor OUT
TH ---
2+5V
CN011 (Pickup Solenoid)
CN010 (Polygon Motor)
---
------ OUT
+24VGND Pick Up Solenoid Control
CN014 (REG-TOP Sensor)
6.2.15. CN015 ( EXIT Sensor )
CN015 (EXIT Sensor)
6.2.16. CN017 ( MAIN Motor )
CN017 (Main Motor)
CN019 (Paper Empty Sensor)
6.3. Registration & Paper Top Sensor Board
CN402 (EXIT Sensor)
6.3.1. CN401 ( REG-TOP Sensor )
CN401 (REG-TOP Sensor)
CN407 (Fuser GND)
6.7. Paper Empty Sensor Board
6.7.1. CN450 ( Paper Empty Sensor )
CN450 (Paper Empty Sensor)
6.8. Toner Empty Sensor Board
CN452 (to Engine Control Board CN004)
6.9.1. CN452 ( to Engine Control Board CN004 )
6.9.2. CN453 ( to 2nd Feeder )
CN453 (to 2nd Feeder)
7 Component Reference Guide
7.1. Main Control Board
IC1 (Main Control CPU)
7.1.1. IC1 ( Main Control CPU )
IC1
IC1
7.1.2. IC2 ( Reset IC )
IC2 (Reset IC) Pin No. Symbol In/Out Function 1 2 3 4
GND VDD OUT Cd
- - Out In
Ground +2.5V Reset Pulse Output Reset Time Set
7.1.3. IC3 ( Flash / Mask ROM )
IC3 (Flash/Mask ROM)
7.1.4. IC5 ( RAM )
IC5 (RAM)
7.1.5. IC6 ( LAN IC )
IC6 (LAN IC)
IC6
7.1.6. IC7 ( EEPROM )
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IC7 (EEPROM) Pin No. Symbol In/Out Function 1 2 3 4 5 6 7 8
A0 A1 A2 VSS SDA SCL WP VCC
- In/Out
7.1.8. IC12 ( Regulator )
7.2. Engine Control Board
7.2.1. IC001 ( ASIC )
7.2.2. IC002 ( Comparators )
7.2.3. IC003 ( Reset IC )
7.2.4. IC004 ( Engine Control CPU )
7.2.5. IC005 ( EEPROM )
IC005 (EEPROM) Pin No. Symbol In/Out Function 1 2 3 4 5 6 7 8
CS SK DI DO GND TEST NC VCC
Out
7.2.6. IC006 ( Motor Drive IC )
7.2.7. IC007 ( Inverters )
8 Preventative Maintenance
8.1. General
8.2. Recommended Tools
8.3. Recommended Cleaning
8.4. Maintenance Tables
8.4.1. User Maintenance
8.4.2. Service Maintenance 8.4.2.1. Maintenance Cycle
8.4.2.2. Lubrication
8.4.2.3. Recommended Lubrication
8.4.3. Counter Reset
9 Troubleshooting
9.1. Self-Diagnostic Indicators
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10.2.1. Engine Control Board Connector
10.2.2. Pickup Roller and Paper Feed Roller
10.2.3. Motor and Drive Gear Unit
10.3. Left Side Parts ( Power Supply Unit and High Voltage Board )
10.4. Rear and Top Side Parts
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10.6. Mechanical Base
10.7. Media Tray ( Paper Cassette )
10.8. Packing
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10.9.1. ICs
10.9.2. Capacitors
All capacitor values are in microfarads unless otherwise noted.
10.9.3. Resistors
10.9.4. Transistor and Diodes
10.9.5. Connectors
10.9.6. Others
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10.10.1. ICs
10.10.2. Capacitors
All capacitor values are in microfarads unless otherwise noted.
10.10.3. Resistors
10.10.4. Transistor and Diodes
10.10.5. Connectors
10.10.6. Others
10.11. Registration & Paper Top Detection Sensor Board
10.12. Paper Exit / ADU Paper Jam Sensor Board
Resistor values is in OHMs.
10.13. Indicator Board
10.14. Toner Empty Sensor Board
10.15. Relay Board (A)
Resistor value is in OHMs.
10.16. Relay Board (B)
Resistor values are in OHMs.