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Brother FAX-8650P service manual Contents

Models: FAX-8650P

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Specification Install Code list Error codes Signal isolation Equipment Errors Maintenance Configuration Command reception Disassembly/Reassembly

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CONTENTS

1.	EQUIPMENT OUTLINE		I-1
	1.1	External Appearance and Weight	I-1
	1.2	Components	I-1
2.	SPECIFICATIONS		I-2

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Brother FAX-8650P service manual Contents

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Contents

Facsimile Equipment Page Appendix Eeprom Customizing Codes Circuit Diagrams Preface Laser Safety 110-120V Model only Cdrh Regulations 110-120V Model only Chapter Contents External Appearance and Weight Components Specifications Model Message Center Model MFC-8650P Installation Installing the Update Data to the Facsimile Equipment Installing the Update Data to the Facsimile Equipment \ICEN filename /b Theory of Operation Overview Overview Mechanisms Scanner Mechanism Document feeding and ejecting mechanism Scanner III Page Print process mechanism Charging process Exposing process Developing process Transferring processErasing process Heat-fixing mechanism Sensors and Actuators PCB Location of Sensors and Actuators Configuration Control Electronics Main PCB Main PCB Modem PCB NCU PCB Control Panel PCB Power Supply PCB Low-voltage power supply PCB High-voltage power supply PCB DISASSEMBLY/REASSEMBLY and Lubrication DISASSEMBLY/REASSEMBLY IV-45 DISASSEMBLY/REASSEMBLY Safety Precautions Tightening Torque List How to Access the Object Component Preparation Disassembly Order Flow ROM Cover, Option Cover, and Battery Assy NCU harness Ferrite core NF-80 Provided on the FAX-8650P Multi-purpose Sheet Feeder Reassembling Notes Document Guide Base Control Panel Assy Panel Rear Cover and Control Panel Page Reassembling Notes Document Feed Roller Assy and Document Ejection Roller Assy Scanner Frame Assy Page Page Page Page Page Reassembling Notes Top Cover Page Reassembling Notes For the FAX3750/MFC7750 **For the FAX-8650P Reassembling Notes Page Reassembling Notes Laser Unit and Toner Sensor PCB Bottom Plate Reassembling Notes Low-voltage Power Supply PCB Main PCB Provided on the FAX-8650P Not provided on the FAX-8650P Setting up the main PCB after replacement High-voltage Power Supply PCB 16 Fan Speaker Gear Drive Unit Page NCU PCB Reassembling Notes Scanner Grounding Plate EL Eraser Lamp Board Cleaning of High-voltage Contacts and Grounding Contacts Lubrication Page Top cover lock spring Gear drive unit Maintenance Mode Test Pattern Entry Into the Maintenance Mode List of MAINTENANCE-MODE Functions Function/Menu key Mode key Key Stop key Operating Procedure Eeprom Parameter Initialization Function Printout of Scanning Compensation Data Function Scanning Compensation Data List ADF Performance Test Function Test Pattern Function Firmware Switches WSW01 through WSW41 Operating Procedure Detailed Description for the Firmware Switches Selector 8 Default dialing mode, pulse DP or tone PB dialing WSW03 PABX* mode setting Selectors 6 and 7 Dial tone detection in Pabx WSW04 Transfer facility setting WSW05 1st dial tone and busy tone detection Selector 7 Busy tone detection in automatic receiving mode WSW06 Pause key setting and 2nd dial tone detection Selectors 4 through 6 Detection of international tone These selectors set the detection level of the 2nd dial tone WSW08 Dial tone setting Called station in automatic CML ON/OFF WSW11 Busy tone setting 11 sec These selectors set the optimum receive signal level WSW14 Auto ANS facility setting WSW15 Redial facility setting WSW16 Function setting OFF No tone WSW19 Transmission speed setting Selector Function Setting and Specifications EP* tone prefix WSW21 TAD setting TCF Selector 7 Resolution level for reception WSW25 TAD setting WSW26 Function setting WSW27 Function setting WSW28 Function setting Change Drum Soon WSW31 Function setting WSW32 Function setting WSW33 Function setting WSW34 Function setting Selector Function Setting and Specifications ECP* mode WSW37 Function setting Page WSW39 Function setting WSW40 Function setting WSW41 Function setting Printout of firmware switch data Function Operational Check of LCD Function Operational Check of Control Panel PCB Function FAX3750 FAX-8650P/MFC7750 Sensor Operational Check Function CIS Scanner Area Setting Function Eeprom Customizing Function Equipment Error Code Indication Function Output of Transmission Log to the Telephone Line Function Operating Procedure Error Indication and Troubleshooting Error Indication Equipment Errors Error messages on the LCD Toner LOW PLS Open Cover Error codes shown in the Machine Error X X message Page Communications Errors Definition of Error Codes on the Communications List Calling Command reception Compatibility checking the NSF and DIS Page ID checking DCN receptionTCF transmission/reception Signal isolation Video signal receptionGeneral communications-related Transmission in V mode Modem error details CodePage Maintenance mode Equipment error Precautions Checking prior to TroubleshootingIntroduction Troubleshooting Procedures 1 Control panel related Telephone related Communications related Paper/document feeding related Print-image related Page Page Separator roller and its related sections Page Location of High-voltage Contacts and Grounding Contacts Grounding Contacts High-voltage Contacts Oct. ’98 SM5X5303 Page Eeprom Customizing Codes Eeprom Customizing Codes List FAX3750/FAX-8650P/MFC7750 Appendix 2. Circuit Diagrams FAX3750/FAX-8650P/MFC7750 Appendix 2. Circuit Diagrams Main PCB 1/7 Main PCB 2/7 Main PCB 3/7 Main PCB 4/7 Main PCB 5/7 Main PCB 6/7 Main PCB 7/7 Modem PCB 1/2 Modem PCB 2/2 NCU NCU PCB 1/2 NCU PCB 2/2 NCU PCB France Control Panel 1/2 FAX-8650P/MFC7750 0 K O 1 K O 2 K O 3 K O 4 K O 5 K O 6 K O Page

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