Panasonic KX-P7105, KX-P7110 M

4.1.2. Engine Control Block Diagram

Noise

Filter

Rectifier

Thermistor

Voltage Control

Circuit Voltage

Detector

+24V

+5V

Fuser Driver Heat Lamp

Thermal

Fuse

Thermostat

Thermister

TH

+24V IR

nCHGCTL

nDBCH

nTRCTL

TECTL

nDB

nTR

TE_LED Charger

Current

Grid Voltage

Transfer Current

OPC

Drum

DEV BIAS Toner

Box

Developer

Front Door

Interlock

Switch

+24V IR

+24V

+5V24V

(GND)

5V

(GND)

Fuser Control Circuit

HV Driver

nFSRCTL nFCTL

OPC Drum Unit

Interlock Switch

+5V

LD

Driver

+5V IR

nHSYNC

nOPTION

nPNON_OP

nVIDEO

nLDENB

nADJUST

+24V

+5V

+5V

CLOCK_OP

nMOEN_OP

nPUCTL_OP

nOPTION

nPNON_OP

nRST

nPUCTL_OP

+24V IR

nHSYNC

nVIDEO

DOPEN

+24V IR

ParallelEthernet

(Only for KX-P7110)

Ready Error Toner/Process Switch

Indicator Board

Top

Sensor Registration

Sensor

Regist/Top Sensor Board

nREGSEN

nEXITSEN

Exit Sensor

Exit Sensor

Board Paper Empty

Sensor Board

SMnA

SMnB

SMA

SM1A

nSM1EN

SMB

nCS

SCK2

SO2

SI2

X001

CPUCLK

10_CTL

11_CTL

ROM

16KB

RAM

512 Byte

CPU

+24V IR

M

PPRDY

nPURGE, nPRDY,nTOP,nSBSY,SXD

EEPCS

EEPCLK

EEPDO

EEPDI

+5V

EEPROM

2 k bit

nPSAVE, nPRINT,CCLK,nCBSY,CXD

nKEY

READY

ERROR

TONER

USB

nTOPSEN

Power Supply Unit Fuser Unit

Main Control

Board Engine Control

Board

High

Voltage

Supply

Unit

OPC Drum Unit

LSU

2nd

Feeder

(Option)

2nd

Feeder

I/F 

Board

FAN

Control Circuit

FANERR FAN

FANERR

FANCTL

TH

TESEN

TESEN

FANPWR

SNRCLK

SNRCTL

nSNRLD

nSNRCLK

nSNRCTL

nSNRLD

PUNIT

PNON

IC004

IC002

IC005

Bipoler

Moter

Driver

2nd

Feeder

I/F Circuit

IC003 

Recet IC

IC006

2ch

Stepping

Motor

Controller

APC

Controller

IC001 ASIC

Polygon

Motor

I/F Circuit

+24V IR

Paper Empty Sensor

Toner Empty

Sensor 

Toner Empty

Sensor

Board 

PUCTL

REGCTL

EXITCTL

Pick Driver

Regist Driver

Exit Driver

+24V

Pick Solenoid

Regist Solenoid

Switchback Solenoid

+24V

+24V

55

KX-P7105 / KX-P7110

Contents

Main Page CONTENTS Page Page Page Page Page Page Page 1.1.4.2. Margins and Print Area Page Page Page Page Page Page 1.7. Print Process Page 1.8. Paper Feed 1.9. Laser Scan Unit ( Exposure ) 1.9.1. Operation Theory 1.9.2. Laser Beam Page 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 Page Page 2.3. Repacking Page Page Page Page 3.2. Right, Left and Top Covers Page 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 Page 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 Page 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 Page 3.14. Pickup, Paper Feed, Registration and Transfer Rollers 3.14.1. Pickup Roller and Pickup Solenoid Page 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 Page Page 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 Page Page Page Page 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 Page 4.4.9. Safety Interlock SW Page Page Page Page 4.4.11.5. Toner Empty Sensor Circuit 4.4.12. Fan Control Circuit 4.4.13. 2nd Feeder I / F Circuit Page 4.5. Main Control Board 4.5.1. Data Flow Page Page 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 Page 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. Page Page 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 Page 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 Page 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 Page 5.3. Sensors, Indicator and Relay Boards 1/1 (Sensors, Indicator and Relay Boards) Page 5.4. Paper Empty Sensor Board and 2nd Feeder I / F Board 1/1 180 R450 PJUPB0008Z_c 2 3 Page 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 ) - 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 Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page 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 Page Page Page Page 10.6. Mechanical Base 10.7. Media Tray ( Paper Cassette ) 10.8. Packing Page Page 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 Page 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.