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Brother MFC6800 User Manual

Brother MFC6800
222 pages
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Multi-Function Machine
SERVICE MANUAL
MODEL: MFC6800/DCP1000
MFC9180/MFC9160

Table of Contents

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Brother MFC6800 Specifications

General IconGeneral
FunctionalityPrint, Copy, Scan, Fax
Print TechnologyInkjet
Print Speed (Black)12 ppm
Print Speed (Color)10 ppm
Paper Capacity100 sheets
Operating Systems SupportedWindows, Mac OS
Fax TypeSuper G3
Fax Transmission Speed33.6 Kbps
Scan TypeFlatbed
ADFYes
Modem speed33.6 Kbps
Standard output capacity100 sheets
ConnectivityUSB
Ink CartridgesBlack, Cyan, Magenta, Yellow

Summary

Safety Information

Laser Safety (110-120V Model only)

Explains the Class 1 laser product certification and safety standards for specific models.

CDRH Regulations (110-120V Model only)

Details US FDA regulations for laser products and compliance labeling requirements.

Chapter 1 General Description

1.1 Outline

Describes the external appearance, dimensions, and approximate weight of the machine.

1.2 Specifications

Lists detailed technical specifications for different models, including general, telephone, and fax features.

Chapter 2 Installation

2.1 Installing the Update Data to the Facsimile Machine

Provides step-by-step instructions for updating the machine's program via a PC.

2.2 Setting ID Codes to Facsimile Machines

Explains how to assign unique ID codes to machines after main PCB replacement.

Chapter 3 Theory of Operation

3.1 Overview

Presents a block diagram illustrating the machine's functional sections and interconnections.

3.2 Mechanisms

Classifies and describes the main mechanical systems: scanner, laser printing, and sensors/actuators.

3.3 Control Electronics

Details the hardware configuration and interconnections of the machine's electronic components.

Chapter 4 Disassembly/Reassembly and Lubrication

4.1 Disassembly/Reassembly

Guides service personnel through taking apart, reassembling, and lubricating the machine components.

4.2 Lubrication

Specifies the types of lubricants and application points for various machine components.

4.3 Periodical Replacement Parts

Lists parts that require periodic replacement, with replacement intervals.

4.4 MTBF/MTTR

States the Mean Time Between Failures (MTBF) and Mean Time To Repair (MTTR).

Chapter 5 Maintenance Mode

5.1 Entry into the Maintenance Mode

Explains the key sequences required to access the machine's maintenance mode.

5.2 List of Maintenance-Mode Functions

Provides a table of available maintenance functions, their codes, and reference pages.

5.3 Detailed Description of Maintenance-Mode Functions

Offers in-depth explanations and operating procedures for various maintenance functions.

Chapter 6 Error Indication and Troubleshooting

6.1 Error Indication

Details machine errors and communications errors, including LCD messages and error codes.

6.2 Troubleshooting

Outlines initial checks, precautions, and procedures for resolving common machine problems.

Appendix 1 EEPROM Customizing Codes

EEPROM Customizing Codes List

A list of specific codes for customizing EEPROM settings based on model and region.

Appendix 2 Firmware Switches (WSW)

WSW01 Dial Pulse Setting

Configures dial pulse generation mode, break time, and inter-digit pause.

WSW02 Tone Signal Setting

Sets tone signal transmission time length and minimum pause in tone dialing.

WSW03 PABX* Mode Setting

Configures CNG detection and PABX dial tone detection parameters.

WSW04 TRANSFER Facility Setting

Sets earth function and time lengths for earth/flash functions in transfer facility.

WSW05 1st Dial Tone and Busy Tone Detection

Configures detection of the first dial tone and busy tones for dialing and call handling.

WSW06 Pause Key Setting and 2nd Dial Tone Detection

Sets pause key behavior and parameters for detecting the second dial tone.

WSW07 Dial Tone Setting 1

Configures frequency band range and detection levels for dial tones.

WSW08 Dial Tone Setting 2

Sets time lengths for dial tone detection and decoding error rates.

WSW09 Protocol Definition 1

Defines frame length, retries, and timers for communication protocols.

WSW10 Protocol Definition 2

Configures DPS switching, transmission time lengths, and encoding systems.

WSW11 Busy Tone Setting

Sets frequency bands and ON/OFF time length ranges for busy tone detection.

WSW12 Signal Detection Condition Setting

Configures parameters for detecting calling signals and delays.

WSW13 Modem Setting

Adjusts modem parameters like cable equalizer, reception level, and attenuator.

WSW14 AUTO ANS Facility Setting

Configures frequency bands and ring counts for the automatic answer mode.

WSW15 REDIAL Facility Setting

Sets intervals and number of redial attempts for the redial function.

WSW16 Function Setting 1

Configures CCITT superfine recommendation and document length limits.

WSW17 Function Setting 2

Sets off-hook alarm behavior and calendar clock type.

WSW18 Function Setting 3

Configures detection time for CNG/no tone and tone sound monitoring.

WSW19 Transmission Speed Setting in V.17 Mode

Sets initial and last transmission speeds for modem fallback in V.17 mode.

WSW20 Overseas Communications Mode Setting

Configures settings for overseas communications, including EP tone prefix and CNG detection.

WSW21 TAD Setting 1

Sets erasure of stored messages and is applicable to Asian versions.

WSW22 ECM Setting

Configures ECM settings and acceptable TCF bit error rates.

WSW23 Communications Setting

Sets training check points, error rates, and decoding error rates for communications.

WSW24 TAD Setting 2

Sets time length for CML-ON and attenuator for ICM/OGM playback.

WSW25 TAD Setting 3

Configures delay time for voice signal detection and pause between paging number and PIN.

WSW26 Function Setting 4

Controls dialing during document reading and CNG cycle detection.

WSW27 Function Setting 5

Defines programmable key behavior and ringer OFF setting.

WSW28 Function Setting 6

Sets transmission levels for DTMF high/low-band frequency signals.

WSW29 Function Setting 7

Configures impedance switching and beep for activity report.

WSW30 Function Setting 8

Controls duty cycle for heat-fixing unit's pulsed current.

WSW31 Function Setting 9

Sets reduction rate and minimum short-OFF duration for distinctive ringing.

WSW32 Function Setting 10

Configures default resolution and contrast settings.

WSW33 Function Setting 11

Controls output of polled transmission requests.

WSW34 Function Setting 12

Sets CNG cycle detection and DTMF tone signals for CNG inhibition.

WSW35 Function Setting 13

No function specified in this entry, likely a placeholder or unused.

WSW36 Function Setting 14

Configures ECP mode and PC power-off recognition time.

WSW37 Function Setting 15

Controls printout of unsent document data and erasure of stored image data.

WSW38 Function Setting 16 in V.34 Mode

Sets equalizer, guard tone, and modem gain for V.34 mode communications.

WSW39 Transmission Speed Setting in V.34 Mode

Sets modem speed ranges for fallback in V.34 mode.

WSW40 Function Setting 17 in V.34 Mode

Masks symbol rates to limit transmission speed range in V.34 mode.

WSW41 CCD Fluorescent Lamp and Modem Attenuator in V.34 Mode

Configures ON-duration of fluorescent lamp and modem attenuator for V.34.

WSW42 Function Setting 18

Configures incoming mail server settings and JBIG coding.

WSW43 Function Setting 19

Sets wait time for PCFax reception and detection time for CED/ANSam.

WSW44 Speeding up scanning-1

Sets effective time length for white level compensation data.

WSW45 Speeding up scanning-2

Configures delay time for ADF document drawing and reference voltage correction.

WSW46 Monitor of Power ON/OFF State

Monitors PC ON/OFF state and parallel port output pins.

Appendix 3 Circuit Diagrams

A. Main PCB

Circuit diagram for the main printed circuit board.

B. NCU PCB

Circuit diagrams for the Network Control Unit (NCU) PCB for various regions.

C. Control Panel PCB

Circuit diagram for the control panel printed circuit board.

D. Power Supply PCBs

Circuit diagrams for the low-voltage and high-voltage power supply PCBs.

E. Relay PCB

Circuit diagram for the relay printed circuit board.