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Brother
FAX-8650P
service manual
Models:
FAX-8650P
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196 pages
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Specifications
Install
Code list
Error codes
Signal isolation
Equipment Errors
Maintenance
Configuration
Command reception
Disassembly/Reassembly
Page 194
Image 194
Page 193
Page 195
Page 194
Image 194
Page 193
Page 195
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
Erasing process
Developing process
Transferring 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
TCF transmission/reception
ID checking
DCN reception
General communications-related
Signal isolation
Video signal reception
Transmission in V mode
Modem error details Code
Page
Maintenance mode
Equipment error
Introduction
Precautions
Checking prior to Troubleshooting
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
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