Brother International FAX 2800 Service Manual

Brother International FAX 2800 - B/W Laser - Fax Manual

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  • Brother International FAX 2800 | Service Manual - Page 1
    FACSIMILE EQUIPMENT SERVICE MANUAL MODEL: FAX2800/MFC4800
  • Brother International FAX 2800 | Service Manual - Page 2
    © Copyright Brother 2001 All rights reserved. No part of this publication may be reproduced in any form or by any means without permission in writing from the publisher. Specifications are subject to change without notice.
  • Brother International FAX 2800 | Service Manual - Page 3
    This publication is a Service Manual covering the specifications, construction, theory of operation, and maintenance of the Brother facsimile equipment. It includes information required for field troubleshooting and repair--disassembly, reassembly, and lubrication--so that service personnel will be
  • Brother International FAX 2800 | Service Manual - Page 4
    Class 1 laser product under the US Department of Health and Human Services (DHHS) the laser beam cannot escape from the machine during any phase of user laser products marketed in the United States. The label for Chinese products MANUFACTURED: JUNE 2001 C BROTHER CORP. (ASIA) LTD. BROTHER
  • Brother International FAX 2800 | Service Manual - Page 5
    CHAPTER 1 GENERAL DESCRIPTION
  • Brother International FAX 2800 | Service Manual - Page 6
    CHAPTER 1 GENERAL DESCRIPTION CONTENTS 1.1 EQUIPMENT OUTLINE 1-1 1.1.1 External Appearance and Weight 1-1 1.1.2 Components ...1-1 1.2 SPECIFICATIONS...1-2
  • Brother International FAX 2800 | Service Manual - Page 7
    appearance and approximate dimensions. (H) 243 mm 9.6" Weight: (W) 395 mm 15.6" (including handset) (D) 359 mm 14.1" Machine proper Machine (incl. drum unit & toner cartridge) In package 1.1.2 Components The equipment consists of the following major components: Approx. 7.5 kg Approx. 8.7 kg
  • Brother International FAX 2800 | Service Manual - Page 8
    (Sleep/Standby/Peak) On/Off Switch Starter Toner Warm Up Time TELEPHONE Handset One-Touch Dial No No No N/A N/A 1-2 FAX2800 (FAX2850)/FAX2900 (1/2) FAX2900 Laser (YL4) 14,400(Fax) 6(Brother#1,MMR) G3 MH/MR/MMR 5.8"-8.5"/3.5"-8.5" 5"-14"/5"-14" up to 20 16 Characters x 1 Line No Yes (1 hour) 4MB
  • Brother International FAX 2800 | Service Manual - Page 9
    Driver TWAIN Viewer PC Fax Remote Setup PC Diagnostics Others Formats (Import) Formats (Export) Pop Up Menu OCR ACCESSORY Life / Yield Toner Starter (N/A) Supply (TN-250) Drum (DR-250) FAX2800 8,000 pages:1 page/job FAX2800 (FAX2850)/FAX2900 (2/2) FAX2900 Mono Laser (YL4) 600x600 up to 10
  • Brother International FAX 2800 | Service Manual - Page 10
    (Sleep/Standby/Peak) On/Off Switch Starter Toner Warm Up Time TELEPHONE Handset One-Touch Dial N/A N/A 1-4 MFC4800/FAX3800 (1/2) FAX3800 Laser (YL4) 33,600(Fax) 2(Brother#1,JBIG) Supper G3 MH/MR/MMR/JBIG 5.8"-8.5"/3.5"-8.5" 5"-14"/5"-14" up to 20 16 Characters x 1 Line Yes Yes (1 hour) 8MB (RAM
  • Brother International FAX 2800 | Service Manual - Page 11
    PC Diagnostics Others BUNDLED SOFTWARE (For iMAC) Printer Driver TWAIN Viewer PC Fax Remote Setup PC Diagnostics Others Formats (Import) Formats (Export) Pop Up Menu OCR ACCESSORY Life / Yield Toner Starter (N/A) Supply (TN-250) Drum (DR-250) MFC4800 Mono Laser (YL4) 600x600 up to 10 200 50
  • Brother International FAX 2800 | Service Manual - Page 12
    Sleep/Standby/Peak) On/Off Switch Starter Toner TELEPHONE Handset One-Touch Dial Speed Dial /940W or less No No FAX-8070P/MFC-9070 (1/2) MFC-9070 Laser (YL4) 14,400(Fax) Approx.6(Brother#1,MMR) G3 MH/MR/MMR 5.8"-8.5"/3.5"-8.5" 5"-14"/5"-14" up to 20 16 Characters x 1 line Yes Yes Yes (9 hours)
  • Brother International FAX 2800 | Service Manual - Page 13
    TWAIN Viewer Pop Up Menu OCR PC Fax Remote Setup PC Diagnostics Others BUNDLED SOFTWARE (For iMAC) Printer Driver TWAIN Viewer Pop Up Menu OCR PC Fax Remote Setup PC Diagnostics Others ACCESSORY Life / Yield FAX-8070P - - - FAX-8070P/MFC-9070 (2/2) MFC-9070 Mono Laser (YL4) 600x600 up to 10 200 No
  • Brother International FAX 2800 | Service Manual - Page 14
    CHAPTER 2 INSTALLATION
  • Brother International FAX 2800 | Service Manual - Page 15
    CHAPTER 2 INSTALLATION CONTENTS 2.1 INSTALLING THE UPDATE DATA TO THE FACSIMILE MACHINE 2-1 2.2 SETTING ID CODES TO FACSIMILE MACHINES CONNECTED TO A SINGLE PC VIA USB ...2-3
  • Brother International FAX 2800 | Service Manual - Page 16
    cord is unplugged from a wall socket. (3) Connect the parallel interface cable to the parallel port on the back of the machine and secure it with the lock wires. (4) Connect the other end of the interface cable to the printer port of your computer and secure it
  • Brother International FAX 2800 | Service Manual - Page 17
    utility are located. In the above example, type C:\ from the command line and press the ENTER key. Then type CD UPDATE and press the ENTER key. , the machine beeps intermittently. Upon completion of the downloading, the machine beeps continuously. NOTE: If the facsimile machine cannot return
  • Brother International FAX 2800 | Service Manual - Page 18
    (1) On your PC, run the ID setting utility. Follow the instructions shown on the PC's screen and enter the 9-digit serial number (e.g., G01012345) printed on the nameplate attached to the back of the facsimile machine as an ID code. Then press the Enter key. The ID setting utility will transmit
  • Brother International FAX 2800 | Service Manual - Page 19
    CHAPTER 3 THEORY OF OPERATION
  • Brother International FAX 2800 | Service Manual - Page 20
    CONTENTS 3.1 OVERVIEW ...3-1 3.2 MECHANISMS ...3-2 3.2.1 Scanner Mechanism 3-3 3.2.1.1 Document feeding and ejecting mechanism 3-3 3.2.1.2 Scanner...3-3 3.2.2 Laser Printing Mechanism 3-4 3.2.2.1 Paper pulling-in, registration, feeding, and ejecting mechanism 3-4 3.2.2.2 Print process mechanism
  • Brother International FAX 2800 | Service Manual - Page 21
    3.1 OVERVIEW 3-1
  • Brother International FAX 2800 | Service Manual - Page 22
    3.2 MECHANISMS The facsimile machine is classified into the following mechanisms: SCANNER MECHANISM - Document feeding and ejecting mechanism - Document scanning mechanism LASER PRINTING MECHANISM - Paper pulling-in, registration, feeding, and ejecting mechanisms - Print process mechanism (
  • Brother International FAX 2800 | Service Manual - Page 23
    the ADF (which consists of the separation roller and ADF parts) feeds those documents into the machine, starting from the bottom sheet (first page) to out of the machine with the document ejection roller ASSY. 3.2.1.2 Scanner The scanner uses a contact image sensor (CIS) unit which consists of an
  • Brother International FAX 2800 | Service Manual - Page 24
    3.2.2 Laser Printing Mechanism 3.2.2.1 Paper pulling-in, registration, feeding, and ejecting mechanism 3-4
  • Brother International FAX 2800 | Service Manual - Page 25
    paper into the machine, a sheet at a time. If the paper drum drive gear, heater roller drive gear, and paper ejection roller drive gear. After the paper passes through the heat-fixing process, it will be ejected onto the paper tray. If the leading edge of the paper pushes up the actuator of the paper
  • Brother International FAX 2800 | Service Manual - Page 26
    3.2.2.2 Print process mechanism The print process unit works with laser beam, electrical charges, and toner. The graph below shows the transition of electrical charge on the surface of the laser-sensitive drum through the five processes: charging, exposing, developing, transferring, and erasing
  • Brother International FAX 2800 | Service Manual - Page 27
    3.2.2.3 Heat-fixing mechanism As the paper passes between the heater roller and the pressure roller in the heat-fixing unit, the heater roller fuses the toner on the paper. 3-7
  • Brother International FAX 2800 | Service Manual - Page 28
    PCB High-voltage power supply PCB Toner sensor PCB Toner sensor PCB Heat-fixing unit Hook switch PCB* • paper jam. • Paper ejection sensor which detects whether the recording paper goes out of the machine. • Toner sensor which detects whether there is toner or a toner cartridge is loaded. • Toner
  • Brother International FAX 2800 | Service Manual - Page 29
    Location of Sensors and Actuators 3-9
  • Brother International FAX 2800 | Service Manual - Page 30
    3.3 CONTROL ELECTRONICS 3.3.1 Configuration The hardware configuration of the facsimile machine is shown below. Configuration of Facsimile Machine (NOTE 1) Not provided on some models. (NOTE 2) Provided on the European, Pacific, and Asian versions. 3-10
  • Brother International FAX 2800 | Service Manual - Page 31
    CHAPTER 4 DISASSEMBLY/REASSEMBLY AND LUBRICATION
  • Brother International FAX 2800 | Service Manual - Page 32
    Order Flow 4-4 4.1.1 Document Guide Base 4-5 4.1.2 Board Access Cover Unit, FU Lamp, and Paper Ejection Sensor Actuator 4-25 4.1.12 Laser Unit and Toner Sensor PCB 4-27 4.1.13 Main PCB ...4-28 4.1.14 Bottom Plate...4-30 4.1.15 Low-voltage Power Supply PCB 4-31 4.1.16 High-voltage Power Supply
  • Brother International FAX 2800 | Service Manual - Page 33
    4.1.22 PCB Support and NCU PCB 4-38 4.1.23 Side Covers R and L 4-39 4.1.24 Scanner Grounding Plate 4-40 4.1.25 EL (Eraser Lamp) Board 4-41 4.1.26 Harness Routing 4-42 4.1.27 Cleaning of High-voltage Contacts and Grounding Contacts 4-46 4.2 LUBRICATION ...4-47
  • Brother International FAX 2800 | Service Manual - Page 34
    parts or units. When having access to the power supply, be sure to unplug the power cord from the power outlet. (2) When servicing the optical system of the laser printing unit machine to discharge static electricity; otherwise, the electronic parts After repairs, check not only the repaired portion
  • Brother International FAX 2800 | Service Manual - Page 35
    Taptite, cup B M3x8 2 Screw, pan (washer) M3x6DA 1 Heat-fixing unit Fixing unit upper cover Lock plate Fuse plate R Taptite, cup B M4x16 2 Taptite, bind B M3x12 2 Taptite, pan B M3x10 1 Screw, pan (washer) M2.6x6DA 1 Laser unit Taptite, bind B M4x12 3 Main shield Taptite, cup S M3x6
  • Brother International FAX 2800 | Service Manual - Page 36
    , - the document support, - the document tray, - the paper tray, and - the drum unit (with the toner cartridge loaded) How to Access the Object Component • On the next page is a disassembly order flow which helps you access the object components. To remove the gear drive unit, for example, first
  • Brother International FAX 2800 | Service Manual - Page 37
    Disassembly Order Flow 4-4
  • Brother International FAX 2800 | Service Manual - Page 38
    4.1.1 Document Guide Base (1) Lift up the document guide base. 4.1.2 Board Access Cover (1) Remove two screws. (2) Push down the top of the board access cover to release the two latches from the main cover, then pull it to the rear. 4-5
  • Brother International FAX 2800 | Service Manual - Page 39
    4.1.3 Auto Sheet Feeder (ASF) (1) If the board access cover has not been removed in Subsection 4.1.2, you need to remove the two screws with which the board access cover and ASF are fastened together to the main cover. (2) Open the top cover. (3) Pull the ASF to the front and then lift it up. 4-6
  • Brother International FAX 2800 | Service Manual - Page 40
    [Disassembling the ASF] 1) Unhook the release lever spring. 2) Remove screw "a" and pull out the release lever. 3) Turn the release cam to the front and pull it out to the left. 4-7
  • Brother International FAX 2800 | Service Manual - Page 41
    the ASF, remove the sector gear and its spring. Unlatch the pawled bushing L to the left and then remove it from the paper pull-in roller shaft. Remove the paper pull-in roller. 5) Push the right and left ends of the separation pad ASSY inwards and take it out. The spring also
  • Brother International FAX 2800 | Service Manual - Page 42
    6) Turn the ASF upside down, remove the registration sensor actuator. 4-9
  • Brother International FAX 2800 | Service Manual - Page 43
    roller units. At each set, remove the leaf spring (in the order of to shown below), pinch rollers, and pinch roller shaft. 8) At the left end of the paper feed L, pawled PF gear, and idle gear. 9) At the right end of the paper feed roller, remove the screw and take off the grounding leaf spring R if
  • Brother International FAX 2800 | Service Manual - Page 44
    then set the ASF chute ASSY, then the black film may be bent or wrinkled. Reassembling Notes • Set the paper feed roller into the ASF with the D-shaped end facing leftwards. • Set the paper pull-in roller into the ASF with the D-shaped end facing leftwards. • When setting the release lever back
  • Brother International FAX 2800 | Service Manual - Page 45
    4.1.4 Handset Mount and Control Panel ASSY (1) Open the control panel ASSY. (2) Open the top cover. (3) Unhook the three latches of the handset mount from the top cover and remove it. 4-12
  • Brother International FAX 2800 | Service Manual - Page 46
    ASSY. Reassembling Notes • Route the panel-hook SW harness together with the hook SW-main harness through the two cable guides provided on the scanner drive unit, as illustrated in Subsection 4.1.26, "Harness routing B." • When installing the handset mount, first fit the two tabs provided at the
  • Brother International FAX 2800 | Service Manual - Page 47
    brush, remove it. NOTE: Once removed, the anti-static brush will become unusable and a new part will have to be put back in. (5) To remove the document rear sensor actuator, pull support "c" outwards. (6) Pull support "a" to the front to release the center tab of the document pressure bar. Next pull
  • Brother International FAX 2800 | Service Manual - Page 48
    (7) Remove the two screws from the panel rear cover. (8) Unhook the panel rear cover from 10 "X" latches provided on the control panel and take off the panel rear cover. (9) Fully turn the document front sensor actuator to the rear and lift it up. (10) Unhook the control panel PCB from four "Y"
  • Brother International FAX 2800 | Service Manual - Page 49
    (12) As shown below, pull the clamp outwards to release the LCD and take out the LCD while pulling the LCD flat cable gently. NOTE: Do not take out the LCD except when the LCD is defective and requires replacement. Reassembling Notes • Before reinstalling the LCD to the control panel, wipe
  • Brother International FAX 2800 | Service Manual - Page 50
    CIS harness, hook SW-main harness, and scanner motor harness from the main PCB. (3) Remove the screw that secures the FG wire to the PCB support . (4) Release the hook SW-main harness, scanner motor harness, and FG wire from the two cable guides provided on the main cover.
  • Brother International FAX 2800 | Service Manual - Page 51
    the FG wire, hook SW-main harness, scanner motor harness, and CIS harness on the underside of the top cover as illustrated in Subsection the FG wire, hook SW-main harness, and scanner motor harness through the cable guides, be sure to first route the FG wire and then route those two harnesses. This
  • Brother International FAX 2800 | Service Manual - Page 52
    up. (5) Slightly pull up the lock arm, move the CIS unit to the left, and lift up the right edge of the CIS unit. (6) Remove the two CIS springs. Reassembling Notes • When reinstalling the CIS unit, first insert the left end under the lock arm, put the CIS unit into the top cover, and move it to the
  • Brother International FAX 2800 | Service Manual - Page 53
    switch PCB and take it out. (2) Take out the hook SW-main harness from the cable guides provided on the scanner drive unit. Reassembling Notes • Route the hook SW-main harness through the cable guides provided on the scanner drive unit as illustrated in Subsection 4.1.26, "Harness routing B." 4-20
  • Brother International FAX 2800 | Service Manual - Page 54
    4.1.9 Document Feed Roller ASSY, Scanner Drive Unit, and Document Ejection Roller ASSY (1) At the right end of roller springs. (3) Remove the two screws from the scanner drive unit. (4) Lift up the scanner drive unit together with the document ejection roller ASSY. The bushing also comes off. 4-21
  • Brother International FAX 2800 | Service Manual - Page 55
    from the top. Then move bushing L to the right to fit it in the cutout provided in the top cover. • Before securing the scanner drive unit to the top cover with two screws, set the document ejection roller ASSY into place. 4-22
  • Brother International FAX 2800 | Service Manual - Page 56
    4.1.10 Separation Roller and its Gear (1) Turn the top cover upside down. Place the top cover with its rear edge facing towards you. (2) Slightly push down the lock arm and move the separation roller gear to the left together with its bushing L ("a" in the illustration given below). Then take them
  • Brother International FAX 2800 | Service Manual - Page 57
    direction of their flanges and stoppers as shown on the previous page. What follows is the installation procedure of the separation roller and its related parts. 1) Turn the top cover upside down. Place the top cover with its rear edge facing towards you. 2) Lightly push down the lock arm and fit
  • Brother International FAX 2800 | Service Manual - Page 58
    4.1.11 Heat-fixing Unit, FU Lamp, and Paper Ejection Sensor Actuator (1) Remove the two screws from the heat-fixing unit. (2) Lift up the heat-fixing unit and disconnect the blue and brown heater wires (of the heater harness) from the heat-fixing unit. Then disconnect the heater thermistor harness
  • Brother International FAX 2800 | Service Manual - Page 59
    , be sure to insert the right edge of the wire into the folded fuse plate R. • A new heat-fixing unit will be provided with the heater thermistor harness being taped to the unit. When installing the unit, remove the tape. • Route the blue and brown heater wires on the main cover as illustrated in
  • Brother International FAX 2800 | Service Manual - Page 60
    Notes • On the underside of the laser unit, route the laser diode harness, polygon motor flat cable, and toner sensor harness as illustrated in Subsection 4.1.26, "Harness routing G." • Before putting the laser unit back into place, check for any toner particles, paper dust or dirt, and clean them
  • Brother International FAX 2800 | Service Manual - Page 61
    (3) Remove two screws "b" from the parallel interface connector. (4) Remove two screws "c" from the main PCB and then take it off from the PCB support. (The upper one of these screws has been removed to release the FG wire when you have removed the top cover in Subsection 4.1.6.) Reassembling Notes
  • Brother International FAX 2800 | Service Manual - Page 62
    Setting up the main PCB after replacement 4-29
  • Brother International FAX 2800 | Service Manual - Page 63
    4.1.14 Bottom Plate (1) Turn the machine upside down. (2) Remove the nine screws (four "x" and five "y") from the bottom plate, then lift it up. "x": Taptite, cup S M3x6 "y": Taptite, bind B M4x12 4-30
  • Brother International FAX 2800 | Service Manual - Page 64
    PCB and grounding wire, respectively. (3) Remove screw "d" and lift up the power inlet support. (4) Slightly lift up the low-voltage power supply PCB and disconnect the low-voltage power harness and heater harness (of the blue and brown wires). "a," "b," and "d": Taptite, cup S M3x6 "c": Screw
  • Brother International FAX 2800 | Service Manual - Page 65
    high-voltage insulator sheet. (2) Slightly lift up the high-voltage power supply PCB and disconnect the high-voltage power flat cable and EL (eraser reinstalling the high-voltage power supply PCB, check the high-voltage contacts for any toner particles, paper dust or dirt, and clean them out. 4-
  • Brother International FAX 2800 | Service Manual - Page 66
    cover/registration sensor PCB and lift it up and out of the main cover. (3) Disconnect the fan harness from the PCB. (4) Take off the fan support by removing the screw. (5) Lift up the fan. Reassembling Notes • Route the fan harness on the fan as illustrated above. • Put the fan back into
  • Brother International FAX 2800 | Service Manual - Page 67
    Top Cover Sensor Actuator (1) Pull up the top cover sensor actuator. 4.1.19 Power Supply Shield (1) Remove the two screws and lift up the power supply shield. Reassembling Notes • When reinstalling the power supply shield, route the low-voltage power harness through the opening and route the heater
  • Brother International FAX 2800 | Service Manual - Page 68
    4.1.20 Speaker (1) Pull the speaker spring inwards and pull up the speaker together with the spring. Reassembling Notes • Put the speaker into place with its harness facing up. • Route the speaker harness through the latch together with the solenoid harness and main motor harness as shown above. 4-
  • Brother International FAX 2800 | Service Manual - Page 69
    4.1.21 Gear Drive Unit (1) Make sure that the heat-fixing unit is removed. (2) Take out the heater harness from the cable guides provided on the top of the gear drive unit. (3) Remove the four screws and lift up the gear drive unit. (4) Remove the two screws and take off the main motor. 4-36
  • Brother International FAX 2800 | Service Manual - Page 70
    (5) To take off the paper feed solenoid, solenoid lever, or clutch release lever, remove the two screws. Reassembling Notes • If the friction spring in the gear drive unit slips off, fit the straight end of the spring in the support hole of the gear drive unit as illustrated above. • When putting
  • Brother International FAX 2800 | Service Manual - Page 71
    4.1.22 PCB Support and NCU PCB (1) Remove the two screws and lift up the PCB support. (2) Remove the two screws and take off the NCU shield. (3) Remove the screw and take off the NCU PCB from the PCB support. (4) Disconnect the NCU harness. 4-38
  • Brother International FAX 2800 | Service Manual - Page 72
    4.1.23 Side Covers R and L (1) To take off the side cover R: Remove the two screws, lift up the front end of the side cover R, then pull it to the front. (2) To take off the side cover L: Remove the two screws. While pushing the left side of the scanner grounding plate to the right (in the direction
  • Brother International FAX 2800 | Service Manual - Page 73
    4.1.24 Scanner Grounding Plate (1) Make sure that the heat-fixing unit is removed. (2) Remove the screw from the scanner grounding plate. (If the bottom plate has not been removed, remove screw "y" also (see page 4-30) that
  • Brother International FAX 2800 | Service Manual - Page 74
    according to the steps below. (1) Make sure that the EL harness is disconnected from the high-voltage power supply PCB. (Refer to Subsection 4.1.16.) (2) Make sure that the heat-fixing unit is removed. (3) Peel off the EL board from the main cover and clear adhesive tape if remaining. Reassembling
  • Brother International FAX 2800 | Service Manual - Page 75
    4.1.26 Harness Routing Harness routing A: Main PCB-related harnesses Harness routing B: Panel-hook SW harness, hook SW-main harness, and scanner motor harness on the main cover 4-42
  • Brother International FAX 2800 | Service Manual - Page 76
    Harness routing C: Hook SW-main harness, scanner motor harness, FG wire, and CIS harness on the underside of the top cover Harness routing D: Hook SW-main harness, scanner motor harness, and FG wire on the top of the main cover 4-43
  • Brother International FAX 2800 | Service Manual - Page 77
    Harness routing E: CIS harness on the top of the main cover Harness routing F: Heater harness on the top of the main cover 4-44
  • Brother International FAX 2800 | Service Manual - Page 78
    Harness routing G: Laser diode harness, polygon motor flat cable, and toner sensor harness on the laser unit Harness routing H: Harnesses viewed from the bottom of the machine 4-45
  • Brother International FAX 2800 | Service Manual - Page 79
    4.1.27 Cleaning of High-voltage Contacts and Grounding Contacts If any toner particles, paper dust or dirt are on the contacts, clean them out. This will ensure that power flows correctly to enable printing. Grounding contacts High-voltage contacts 4-46
  • Brother International FAX 2800 | Service Manual - Page 80
    4.2 LUBRICATION Apply the specified lubricants to the lubrication points as shown below. Lubricant type (Manufacturer) Molykote EM-D110 (Dow Corning) Molykote grease PG-662 (Dow Corning) Conductive grease FLOIL GE676 (Kanto Kasei Ltd.) Half of rice-sized pinch of grease (3 mm3 Lubricant amount
  • Brother International FAX 2800 | Service Manual - Page 81
    [ 2 ] Scanner drive unit [ 3 ] Separation roller 4-48
  • Brother International FAX 2800 | Service Manual - Page 82
    [ 4 ] Document feed roller 4-49
  • Brother International FAX 2800 | Service Manual - Page 83
    CHAPTER 5 MAINTENANCE MODE
  • Brother International FAX 2800 | Service Manual - Page 84
    16 5.3.11 CIS Scanner Area Setting 5-17 5.3.12 EEPROM Customizing 5-17 5.3.13 Printout of the Equipment's Log Information 5-18 5.3.14 Display of the Equipment's Log Information 5-18 5.3.15 Equipment Error Code Indication 5-19 5.3.16 Output of Transmission Log to the Telephone Line 5-19 5.3.17
  • Brother International FAX 2800 | Service Manual - Page 85
    to accept entry from the keys. To select one of the maintenance-mode functions listed in Section 5.2, enter the corresponding 2digit function code with the numerical keys on the control panel. (The details of each maintenancemode function are described in Section 5.3.) NOTES: • Pressing the 9 key
  • Brother International FAX 2800 | Service Manual - Page 86
    Function Code 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 32 54 55 74 77 80 CIS Scanner Area Setting EEPROM Customizing Printout of the Equipment's Log Information Display of the Equipment's Log Information Equipment Error Code Indication Output of Transmission Log to the Telephone Line
  • Brother International FAX 2800 | Service Manual - Page 87
    code 10 accesses the firmware switches, each of which has eight selectors. You should not allow end users to access all of those selectors, but you may allow them to access user-accessible selectors which are shaded in the firmware switch tables in Appendix 2. The service personnel should instruct
  • Brother International FAX 2800 | Service Manual - Page 88
    below. Data item Function code Maintenance-mode functions User switches Firmware switches Remote activation code Activity report Station ID data Outside line number Telephone function registration One-touch dialing Speed dialing Group dialing Received FAX messages temporarily stored in the
  • Brother International FAX 2800 | Service Manual - Page 89
    of recording of the compensation data list, the equipment returns to the initial stage of the maintenance mode. NOTE: If any data is abnormal, its code will be printed in inline style, as shown on the next page. 5-5
  • Brother International FAX 2800 | Service Manual - Page 90
    a) b) c) d) e) Scanning Compensation Data List 5-6
  • Brother International FAX 2800 | Service Manual - Page 91
    5.3.3 ADF Performance Test Function The equipment counts the documents fed by the automatic document feeder (ADF) and displays the count on the LCD for checking the ADF performance. Operating Procedure (1) Set documents. (Allowable up to the ADF capacity.) The "DOC. READY" will appear on the LCD.
  • Brother International FAX 2800 | Service Manual - Page 92
    5.3.4 Test Pattern 1 Function This function, much like the copying function, prints out test pattern 1 to allow the service personnel to check for record data missing or print quality. Operating Procedure Press the 0 and 9 keys in this order in the initial stage of the
  • Brother International FAX 2800 | Service Manual - Page 93
    been set at the factory in conformity to the communications standards and codes of each country. Do not disturb them unless necessary. Some firmware definition 1 Protocol definition 2 Busy tone setting Signal detection condition setting Modem setting AUTO ANS facility setting REDIAL facility setting
  • Brother International FAX 2800 | Service Manual - Page 94
    to the initial stage of the maintenance mode. n Details of Firmware Switches The details of the firmware switches are described in Appendix 2 in which the user-accessible selectors of the firmware switches are shaded. 5-10
  • Brother International FAX 2800 | Service Manual - Page 95
    [ B ] Printout of firmware switch data Function The equipment prints out the setting items and contents specified by the firmware switches. Operating Procedure (1) Press the 1 key twice in the initial stage of the maintenance mode. The "PRINTING" will appear on the LCD. (2) The equipment prints out
  • Brother International FAX 2800 | Service Manual - Page 96
    Procedure (1) Press the 1 and 2 keys in this order in the initial stage of the maintenance mode. The LCD shows (2) Press the Fax Start key. Each time you press the Fax Start key, the LCD cycles through the displays shown at right. (3) Press the Stop key in any process of the above display
  • Brother International FAX 2800 | Service Manual - Page 97
    Key & Button Entry Order 5-13
  • Brother International FAX 2800 | Service Manual - Page 98
    Amplify*. (*Amplify level: Extra-high volume for users who are deaf or hard of hearing.) The below. Operating Procedure (1) Connect the telephone line cord to the modular jack of the facsimile Up arrow key Down arrow key (5) Press the Fax Start key. The equipment enters the receiver volume
  • Brother International FAX 2800 | Service Manual - Page 99
    . Top cover closed. No paper detected. No paper jam. Toner detected. On-hook state. (2) Change the detecting conditions (e.g., insert paper through the document sensors or the registration sensor(s), open the top cover, jam paper at the paper outlet, remove the toner cartridge, lift up the handset
  • Brother International FAX 2800 | Service Manual - Page 100
    5.3.10 Fine Adjustment of Scanning Start/End Position Function This function allows you to adjust the scanning start/end position. Operating Procedure (1) Press the 5 and 4 keys in this order in the initial stage of the maintenance mode. The "SCAN START ADJ." appears on the LCD. After two seconds,
  • Brother International FAX 2800 | Service Manual - Page 101
    of MFC4800 USA version) appears. (2) Enter the desired customizing code (e.g., 0002 in the case of FAX2800 Canadian version). The newly entered code appears. NOTE: If a wrong 4-digit code is entered, the equipment will malfunction. (3) Press the Fax Start key. The equipment saves the setting and
  • Brother International FAX 2800 | Service Manual - Page 102
    Fax Start key. Each time the Fax drum has been rotated 5) Drum change count (in hex.), indicating how many times drum replacement has been made 6) Toner change count (in hex.), indicating how many times toner replacement has been made 7) Error code of the most recent machine error 8) Error code
  • Brother International FAX 2800 | Service Manual - Page 103
    the latest transmission) to the telephone line. It allows the service personnel to receive the transmission log of the user's equipment at a remote location and use it for analyzing problems arising in the user's equipment. Operating Procedure (1) If the user's equipment has a transmission-related
  • Brother International FAX 2800 | Service Manual - Page 104
    can cancel the memory security mode. Use this procedure if the user forgets his/her password entered when setting the memory security mode Carrying out this procedure will lose passwords previously entered but retain FAX messages received in the memory security mode. Operating Procedure (1) When the
  • Brother International FAX 2800 | Service Manual - Page 105
    CHAPTER 6 ERROR INDICATION AND TROUBLESHOOTING
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    CHAPTER 6 ERROR INDICATION AND TROUBLESHOOTING CONTENTS 6.1 ERROR INDICATION...6-1 6.1.1 Equipment Errors 6-1 [ 1 ] Error messages on the LCD 6-1 [ 2 ] Error codes shown in the "MACHINE ERROR X X " message 6-5 6.1.2 Communications Errors 6-7 6.2 TROUBLESHOOTING 6-17 6.2.1 Introduction...6-17
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    the MACHINE ERROR, one of the error codes listed in [ 2 ] will appear on the LCD. [ 1 ] Error messages on the LCD Messages on the LCD CHANGE DRUM SOON CHECK DOCUMENT Remove document, then press STOP KEY. (These messages appear alternately.) Probable Cause The service life of the drum unit will
  • Brother International FAX 2800 | Service Manual - Page 108
    messages appear alternately.) CHECK DRUM UNIT Open cover, then reinstall drum unit. (These messages appear alternately.) CHECK PAPER Reload paper by using lever, then press FAX START. (These messages appear alternately.) CHECK PAPER SIZE Reload correct paper, then press FAX START. (These messages
  • Brother International FAX 2800 | Service Manual - Page 109
    ERROR XX Unplug machine, then call Brother. (These messages appear alternately.) PAPER JAM Open cover, then remove jammed paper. (These messages appear alternately.) PLS OPEN COVER SCANNER ERROR Probable Cause The cover sensor detects that the top cover is not closed. "XX" indicates an error code
  • Brother International FAX 2800 | Service Manual - Page 110
    on the LCD TONER EMPTY Open cover, then replace new toner cartridge. (These messages appear alternately.) TONER LOW Probable Cause The toner sensor has detected that there is no toner in the cartridge or that no toner cartridge is loaded. If this message appears, recording is no longer possible
  • Brother International FAX 2800 | Service Manual - Page 111
    X X " message Error Code X X (Hex.) ( 71 ( 72 ( 73 ( 74 ( 75 ( 76 ( 77 ( 78 ( 79 ( 80 ( 82 ( 83 ( 84 ( 88 ( A1 ( A2 ( A3 ( A4 ( A7 ( A8 ( A9 ( AC Error factor Polygon motor does not synchronize with the reference clock. ) Cannot detect Beam Detect signal. ) No toner cartridge loaded. ) Toner empty
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    paper. ) Write error in EEPROM. Data scanning error during transmission. ) Document removed in phase B.) EOL not found in page memory transmission mode. ) PC interface error. ) Error codes in parentheses do not appear in the "MACHINE ERROR X X", since those errors are displayed as messages
  • Brother International FAX 2800 | Service Manual - Page 113
    6.1.2 Communications Errors If a communications error occurs, the facsimile equipment emits an audible alarm (intermittent beeping) for approximately 4 seconds, displays the corresponding error message, and prints out the transmission verification report if the equipment is in sending operation. 6-7
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    10 10 11 11 11 11 11 11 11 Code 2 08 20 21 01 02 03 05 06 07 10 Causes Wrong number called. Retrieval file error. Image data entry error. No dial tone detected before start of dialing. Busy tone detected before dialing. 2nd dial tone not detected. No loop current detected
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    received. Unable to reserve a command receiver memory. Image data file error. (3) Compatibility [checking the NSF and DIS] Code 1 32 32 Code 2 01 02 Causes Remote terminal only with V.29 capability in than that required for reception of the confidential or relay broadcasting instruction. 6-9
  • Brother International FAX 2800 | Service Manual - Page 116
    (4) Instructions received from the remote terminal [checking the NSC, DTC, NSS, and DCS] Code 1 40 40 Code 2 02 03 Causes Illegal coding system requested. Illegal recording width requested. 40 05 ECM requested although not allowed. 40 06 Polled while not ready. 40 07 No document to send
  • Brother International FAX 2800 | Service Manual - Page 117
    1 63 63 63 63 63 63 Code 2 01 02 03 04 05 06 Causes Password plus "lower 4 digits of retrieval ID uncoincident with that of the mail box ID. (7) DCN reception Code 1 74 Code 2 DCN received. Causes (8) TCF transmission/reception Code 1 80 Code 2 01 Fallback impossible. Causes 6-11
  • Brother International FAX 2800 | Service Manual - Page 118
    not terminated even at the final transmission speed for fallback. Receive buffer empty. (5-second time-out) Receive buffer full during operation except receiving into memory. Decoding error continued on 500 lines. Decoding error continued for 10 seconds. Timeout: Five seconds or more for one
  • Brother International FAX 2800 | Service Manual - Page 119
    negotiation). Transmission canceled by pressing the Stop key (after completion of the G3 FAX negotiation). Transmission canceled due to a scanning error. (12) Transmission in V. 34 mode Code 1 C0 C0 C0 C0 Code 2 01 02 03 04 Causes No common modulation mode or failed to poll. Unable to detect JM
  • Brother International FAX 2800 | Service Manual - Page 120
    error details (Code 3) Code 3 21 22 23 24 25 26 27 28 29 2A 2B 2C 31 91 92 93 94 95 96 97 A1 B0 B1 B2 B3 B4 B5 B6 C0 C1 Causes Timeout waiting for INFO0. Checksum error for turning off the CC. Retraining forced for problems not fixed in phase 2. Problem with S-sequence of HDX-resync. FED turned off
  • Brother International FAX 2800 | Service Manual - Page 121
    Code 3 C2 C3 C4 C5 C7 D0 D1 D2 D3 D4 D5 D6 D8 DA DB E2 E3 E4 FE FF 71 Causes S-sequence finished before prediction in phase 3. Timeout waiting for S-Sbar in phase 3. Timeout waiting for S-Sbar in phase 3. Timeout waiting for S in phase 3. Training after TRN failure. Problem with S-sequence
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    (14) Equipment error Code 1 FF FF Code 2 00 FF Causes Burn-in operation canceled by pressing the Stop key. Unrecoverable MODEM error. 6-16
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    the troubleshooting procedures, so this section covers some sample problems. However, those samples will help service personnel pinpoint and repair other defective elements if he/she analyzes and examines them well. 6.2.2 Precautions Be sure to observe the following to prevent the secondary troubles
  • Brother International FAX 2800 | Service Manual - Page 124
    located on the bottom of the machine is used. The supply voltage stays within the rating ±10%. (2) Each voltage level on AC input lines and DC lines is correct. (3) All cables and harnesses are firmly connected. (4) None of the fuses are blown. Recording paper Check that: (1) A recommended type of
  • Brother International FAX 2800 | Service Manual - Page 125
    6.2.4 Troubleshooting Procedures [ 1 ] Control panel related Trouble (1) LCD shows nothing. (2) Control panel inoperative. Check: Panel-main harness between the main PCB and the control panel PCB Control panel PCB Low-voltage power supply PCB Main PCB LCD Panel-main harness between the main PCB and
  • Brother International FAX 2800 | Service Manual - Page 126
    feeding related Trouble (1) Neither "COPY: PRESS COPY" nor "FAX: NO. & START" message appears although documents are set. (2) Document not fed. (3) Document double feeding (4) Recording paper not fed. (5) Recording paper double feeding Check: Sensors by using the maintenance-mode function code 32
  • Brother International FAX 2800 | Service Manual - Page 127
    .) Replace the toner cartridge. Replace the drum unit. Check the connection of the laser flat cable on the main PCB. Replace the main PCB. Replace the laser unit. Replace the high-voltage power supply PCB. (2) All black At the scanner Check the following components: - CIS harness - CIS unit - Main
  • Brother International FAX 2800 | Service Manual - Page 128
    (3) Light Trouble (4) Dark Action to be taken At the scanner Check the following components: - CIS unit - Main PCB At the printer side l Replace the toner cartridge with a new one and print 4 to 5 pages. If the problem persists, proceed to the next step. l Remove the toner cartridge and start
  • Brother International FAX 2800 | Service Manual - Page 129
    to its home position. Replace the toner cartridge. Replace the drum unit. Replace the heat-fixing unit. At the printer side Clean the laser beam window (glass) on the laser unit. Replace the laser unit. (7) Black and blurred horizontal stripes (8) Horizontal lines At the printer side Slide the
  • Brother International FAX 2800 | Service Manual - Page 130
    Trouble (9) White vertical streaks (10) White horizontal stripes Action to be taken At the scanner Check the following components: - CIS unit At the printer side l Clean the laser beam window on the laser unit. l Replace the toner cartridge. l Replace the drum unit. At the printer side l Replace
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    ASF. Instruct the user to use the recommended types of paper. Replace the ASF. Check the position of the registration sensor. Replace the gear drive unit. (13) Image distortion or improper image alignment (14) Blurred at either side In communications Check the following components: - Error code
  • Brother International FAX 2800 | Service Manual - Page 132
    the heatfixing unit. Replace the drum unit. Replace the high-voltage power supply PCB. At the printer side Instruct the user to use paper of the recommended weight (less than 36 lb./m2). Clean the toner sensors (LED and light-receiver). Replace the toner cartridge. Replace the drum unit. Check the
  • Brother International FAX 2800 | Service Manual - Page 133
    -receiver). Check the toner sensor harnesses. Replace the toner cartridge. Replace the drum unit. Replace the high-voltage power supply PCB. At the printer side Instruct the user to use paper of the recommended weight (less than 36 lb./m2). Replace the toner cartridge. Replace the drum unit. 6-27
  • Brother International FAX 2800 | Service Manual - Page 134
    Location of High-voltage Contacts and Grounding Contacts Grounding Contacts High-voltage Contacts For transfer roller Drum unit For cleaner roller For grid For developer roller For corona wire 6-28
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    FAX2800/MFC4800 Appendix 1. EEPROM Customizing Codes
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    of MFC4800 U.S.A. version) appears. (3) Enter the desired customizing code (e.g., 0002 in the case of FAX2800 Canadian version). The newly entered code appears. NOTE: If a wrong 4-digit code is entered, the equipment will malfunction. (4) Press the Fax Start key. The equipment saves the setting
  • Brother International FAX 2800 | Service Manual - Page 137
    EEPROM Customizing Codes List Versions U.S.A. CANADA AUSTRALIA NEW ZEALAND ASIA (SINGAPORE) FAX2800 (FAX2850) 9001 0002 0006 0027 0040 Model FAX2900 FAX3800 9201 0202 ------- 9001 0002 ------- MFC4800 9101 0102 0106 0127 0140 Versions GERMANY U.K. FRANCE NORWAY BELGIUM NETHERLANDS
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    FAX2800/MFC4800 Appendix 2. Firmware Switches (WSW)
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    2nd dial tone detection Dial tone setting 1 Dial tone setting 2 Protocol definition 1 Protocol definition 2 Busy tone setting Signal detection condition setting Modem setting AUTO ANS facility setting REDIAL facility setting Function setting 1 Function setting 2 Function setting 3 Transmission speed
  • Brother International FAX 2800 | Service Manual - Page 140
    ms (for 16 PPS) 64 ms (at 106-ms intervals) 800 ms 850 ms 950 ms 600 ms 0: Yes 1: No 0: PB 1: DP NOTE: In models supporting no pulse (DP) dialing mode (e.g., U.S.A. version), selector 7 takes no effect even if it may be set. Selectors 1 and 2: Dial pulse generation mode These selectors set
  • Brother International FAX 2800 | Service Manual - Page 141
    may be changed by the function switch. If the user switches it with the function switch when selector 7 is Tone signal transmission time length Min. pause in tone dialing Attenuator for pseudo ring backtone to the line (selectable in the range of 0-15 dB) Setting and Specifications No. 1 2 00 01
  • Brother International FAX 2800 | Service Manual - Page 142
    whether or not the equipment detects a CNG signal when a line is connected to a telephone sharing a modular wall socket with the cycles specified by these selectors, the equipment interprets CNG as an effective signal and then starts FAX reception. Selector No. 1 No. 5 0 (A) 0 (A) 0 (A) 1 (B) 1
  • Brother International FAX 2800 | Service Manual - Page 143
    deactivate the dial tone detection function which detects a dial tone when a line is connected to the PABX. Setting both of these selectors to "1" equipment starts dialing upon detection of a dial tone when a line is connected. Other setting combinations deactivate the dial tone detection function
  • Brother International FAX 2800 | Service Manual - Page 144
    : 110 ms : 250 ms : 500 ms NOTE: Selectors 5 through 8 are not applicable in those countries where no transfer facility is supported. Selector 1: Earth function function These selectors set the short-circuiting time length of the telephone line (La or Lb) to ground. This setting is effective only
  • Brother International FAX 2800 | Service Manual - Page 145
    detection Max. pause time allowable for remote ID code detection Busy tone detection in automatic sending mode Busy those countries where no busy tone detection is supported. Selectors 1 through 3: 1st dial tone dial tone when a line is connected. For the detecting conditions of the 1st dial tone
  • Brother International FAX 2800 | Service Manual - Page 146
    Selectors 5 and 6: Busy tone detection in automatic sending mode These selectors determine whether or not the equipment automatically disconnects a line upon detection of a busy tone in automatic sending mode. Setting selector 6 to "0" ignores a busy tone so that the equipment does not disconnect
  • Brother International FAX 2800 | Service Manual - Page 147
    Selector No. 1 | 3 4 | 6 7 8 WSW06 (Pause key setting and 2nd dial tone detection) Function Pause key setting and 2nd dial tone detection Detection of 2nd dial tone No. of 2nd dial tone detection times 2nd dial tone interrupt detecting time Setting and Specifications No. 1 2 3 0 0 0 : No pause 0
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    the equipment will first wait for the 2nd dial tone to be sent via the communications line. After that, the equipment will insert a WAIT of 3.5 seconds. If no 2nd not apply in those countries where no dial tone detection function is supported. Selector 7: No. of 2nd dial tone detection times This
  • Brother International FAX 2800 | Service Manual - Page 149
    39 dBm -42 dBm 0: 30 ms 1: 50 ms NOTE: Selectors 1 through 7 are not applicable in those countries where no dial tone or line current detection is supported, e.g., U.S.A. Selectors 1 and 2: Frequency band range These selectors set the frequency band for the 1st dial tone and the busy tone (before
  • Brother International FAX 2800 | Service Manual - Page 150
    dBm -42 dBm NOTE: The WSW08 is not applicable in those countries where no dial tone detection is supported, e.g., U.S.A. Selectors 1 through 3: 1st dial tone detection time length Upon detection of the 1st dial tone time length and disconnects itself from the line when no dial tone is inputted. 12
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    those models which do not support ECM. Selector 1: Frame length selection Usually a single frame consists of 256 octets (1 octet = 8 bits). For communications lines with higher bit error rate, however, set selector 1 to "1" so that the facsimile equipment can divide a message into 64-octet frames
  • Brother International FAX 2800 | Service Manual - Page 152
    of training retries to be repeated before automatic fallback. Selectors 7 and 8: Encoding system (Compression) This selector determines whether or not use of the MR/MMR coding system will be allowed. 14
  • Brother International FAX 2800 | Service Manual - Page 153
    1: 110-410/320-550 ms 1: 100-660/100-660 ms NOTE: WSW11 is not applicable in those countries where no busy tone detection is supported. NOTE: The setting of WSW11 is effective only when selectors 5 and 6 of WSW05 are set to "0, 1" or "1, 1" (Busy tone detection). Selectors 1 and 2: Frequency band
  • Brother International FAX 2800 | Service Manual - Page 154
    Signal detection condition setting) Function Min. OFF time length of calling signal (Ci) Max. OFF time length of calling signal (Ci) Detecting 250 ms 150 ms 1: No Selectors 1 through 4: Min. and max. OFF time length of calling signal (Ci) If the equipment detects the OFF state of calling signal (Ci
  • Brother International FAX 2800 | Service Manual - Page 155
    0: 0 dB 0 km 1.8 km 3.6 km 5.6 km -43 dBm -47 dBm -49 dBm -51 dBm 1: 8 dB 1: 4 dB 1: 2 dB 1: 1 dB The modem should be adjusted according to the user's line conditions. Selectors 1 and 2: Cable equalizer These selectors are used to improve the pass-band characteristics of analogue signals on
  • Brother International FAX 2800 | Service Manual - Page 156
    selection These selectors are used to select the frequency band of calling signals for activating the AUTO ANS facility. In the French versions, if the user sets the PBX to OFF from the control panel, the setting made by selectors 1 and 2 will take no effect and the frequency's lower limit will
  • Brother International FAX 2800 | Service Manual - Page 157
    2 times 1 : 3 times | 1 : 15 times 0: Redialing 1: No redialing NOTE: Selector 7 is not applicable in those countries where no busy tone detection is supported. Selectors 1 through 6: Selection of redial interval and No. of redialings The equipment redials by the number of times set by selectors
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    1: Functional Selector 2: CCITT superfine recommendation If this selector is set to "1," the equipment communicates in CCITT recommended superfine mode (15.4 lines/mm). If it is set to "0," it communicates in native superfine mode. Selector 7: Max. document length limitation This selector is used
  • Brother International FAX 2800 | Service Manual - Page 159
    Selector No. 1 2 3 4 5 6 7 8 WSW17 (Function setting 2) Function Off-hook alarm Not used. Calendar clock type Not used. Non-ring reception Not used. No. 1 0 0 1 Setting and Specifications 2 0 : No alarm 1 : Always valid X : Valid except when 'call reservation' is selected. 0: U.S.A. type 1:
  • Brother International FAX 2800 | Service Manual - Page 160
    station only 1 : All transmission phases both at the calling and called stations Selectors 2 and 3: Detection enabled time for CNG and no tone After the line is connected via the external telephone or by picking up the handset of the facsimile equipment, the equipment can detect a CNG signal or no
  • Brother International FAX 2800 | Service Manual - Page 161
    a higher one. Selector 7: V. 34 mode This selector determines whether or not the equipment communicates with the remote station in the V. 34 mode when that station supports the V. 34 mode. 23
  • Brother International FAX 2800 | Service Manual - Page 162
    . Note that some models when called may cause error by receiving a self-outputted DIS. Selectors 8: CNG detection on/off If this selector is set to "1," the equipment detects a CNG signal according to the condition preset by selectors 2 and 3 of WSW18 after a line is connected. If it is set to
  • Brother International FAX 2800 | Service Manual - Page 163
    call when a new call comes in. If Call Waiting Caller ID service is available in the area and the user subscribes to it, he/she can see information about his/her incoming call. Selectors 5 through 8: Acceptable TCF bit error rate (%) Setting two or more selectors to "1" produces addition of percent
  • Brother International FAX 2800 | Service Manual - Page 164
    is too late, the data counting period will become less than 1.0 second, making the called station judge the line condition unacceptable. Selectors 2 and 3: Allowable training error rate The called station checks a series of zeros gathered in training (as described in Selector 1) according to the
  • Brother International FAX 2800 | Service Manual - Page 165
    to the length of time from CML-ON up to the start of OGM transmission. Selectors 5 through 8: Attenuator for playback of ICM/OGM to the line Setting two or more selectors to "1" produces addition of attenuation assigned to each selector. This setting will not be limited by selector 8 of WSW23. 27
  • Brother International FAX 2800 | Service Manual - Page 166
    WSW25 (TAD setting 3) Selector No. Function 1 Delay time for starting detection of 2 voice signal 3 Detection level for no voice signal 4 5 | Pause between paging number and PIN 7 8 Not used. Setting and Specifications No. 1 0 0 1 1 2 0: 1: 0: 1: 0 sec. 8 sec. 16 sec. 24 sec. No. 3
  • Brother International FAX 2800 | Service Manual - Page 167
    and Specifications Not used. Dialing during document reading into the temporary memory in in-memory message transmission 0: Disabled 1: Enabled No. of CNG cycles to be detected No. 4 5 (when the line is connected via the external telephone except in the external TAD mode or via the builtin
  • Brother International FAX 2800 | Service Manual - Page 168
    5) Selector No. 1 2 3 4 5 | 7 8 Function Definition of programmable key Ringer OFF setting Not used. Detection of distinctive ringing pattern Not used. Toner save mode Setting and Specifications 0: TEL key 1: TEL/POLLING key 0: Yes 1: No 0: Yes 1: No 0: Yes 1: No NOTE: Selector 1 takes
  • Brother International FAX 2800 | Service Manual - Page 169
    Selector No. 1 | 3 4 | 6 7 8 WSW28 (Function setting 6) Function Transmission level of DTMF highband frequency signal Transmission level of DTMF low-band frequency signal Not used. Setting and Specifications No. 1 2 3 000 : 001 : 010 : 011 : 100 : 101 : 110 : 111 : No. 4 5 6 000 : 001 : 010 :
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    activity report becomes full (as well as displaying a message on the LCD, prompting the output of the cycle control of pulsed current for the heat-fixing unit Setting this selector to "1" activates the duty cycle line. Depending upon the codes and regulations in the country, this selector should be set
  • Brother International FAX 2800 | Service Manual - Page 171
    the calling station in a single page of the current recording paper. If it is set to "0," the equipment records one- DRUM SOON" message This selector determines whether or not the "CHANGE DRUM SOON" message should appear on the LCD when the service life of the laser-sensitive drum in the laser unit
  • Brother International FAX 2800 | Service Manual - Page 172
    Selector No. 1 | 4 5 6 7 8 WSW32 (Function setting 10) Function Setting and Specifications Not used. Default resolution Default contrast No. 5 6 00: 01: 10: 11: No. 7 8 0 X: 10: 11: Standard Fine Super fine Photo Automatic Super light Super dark Selectors 5 and 6: Default resolution These
  • Brother International FAX 2800 | Service Manual - Page 173
    CNG signal by the number of cycles specified by these selectors when the line is connected via the facsimile equipment in the F/T mode or via the inhibited. Selector 8: CNG detection when the external telephone is connected with a line in TAD mode If this selector is set to "0," the equipment will
  • Brother International FAX 2800 | Service Manual - Page 174
    . Escape from phase C Lower limit of frequency to be ignored after detection of calling signals (Ci) 0: ON 0: Disabled 0: Normal 1: OFF 1: Enabled 1: Long 0: Yes No. 6 recognizes via the STROBE signal line that the connected PC is automatic reception of FAX data if in the FAX mode or enters the
  • Brother International FAX 2800 | Service Manual - Page 175
    not the 1st-page image data of a document will be printed out onto the error report if the document image data stored in the temporary memory cannot be transmitted normally. unsent document at the time of the subsequent in-memory message transmission only when recording paper or toner runs out. 37
  • Brother International FAX 2800 | Service Manual - Page 176
    control of modem's EQM gain for proper transmission speed choice Redialing when a communications error occurs Not used. Setting and Specifications No. 1 0 1 1 2 X : if the facsimile equipment fails to send training due to weak line connection. If these selectors are set to "0, X," the modem
  • Brother International FAX 2800 | Service Manual - Page 177
    Selector No. 1 | 4 5 | 8 WSW39 (Transmission speed setting in V. 34 mode) Function First transmission speed choice for fallback Last transmission speed choice for fallback Setting and Specifications No. 1 2 3 4 No. 5 6 7 8 0 0 0 0 : 2400 bps 0 0 0 1 : 4800 bps 0 0 1 0 : 7200 bps 0 0 1 1 : 9600
  • Brother International FAX 2800 | Service Manual - Page 178
    WSW39), then the allowable maximum transmission speed remains 21600 bps but the minimum transmission speed will be limited to 4800 bps. Symbol rate 2400 2800 Transmission speed (bps) 2400 4800 7200 9600 12000 14400 16800 19200 21600 4800 7200 9600 12000 14400 16800 19200 21600 24000 26400 Symbol
  • Brother International FAX 2800 | Service Manual - Page 179
    a flat-bed scanner. Selectors 1 through 3: ON-duration of the fluorescent lamp built in the CCD unit If the scanning operation is started when the fluorescent lamp is off, then the lamp will come on remote station is improper due to line loss. This function applies to super G3 protocol signals. 41
  • Brother International FAX 2800 | Service Manual - Page 180
    Incoming mail server POP*1 Incoming mail server SMTP*2 Internet-FAX forward function JBIG*3 coding system Not used. Setting and Specifications 0: OFF 0: OFF Selector 3: Internet-FAX forward function If this selector is set to "ON," the machine may forward a FAX message received through Internet
  • Brother International FAX 2800 | Service Manual - Page 181
    WSW44 (Speeding up scanning-1) Selector No. 1 | 5 Not used. Function 6 Effective time length of the white | level compensation data obtained 8 beforehand Setting and Specifications No. 6 7 8 0 00 : 0 01 : 0 10 : 0 11 : 1 00 : 1 01 : 1 10 : 1 11 : Obtained compensation data ineffective 1
  • Brother International FAX 2800 | Service Manual - Page 182
    WSW45 (Speeding up scanning-2) Selector No. 1 | 3 4 | 6 7 8 Function Delay time from when documents are set until the ADF starts drawing them in Periodical correction intervals of the reference voltage to be applied to white level compensation for document scanning, during standby Not used.
  • Brother International FAX 2800 | Service Manual - Page 183
    WSW46 (Monitor of PC ON/OFF state) Selector No. Function 1 2 Monitoring the PC ON/OFF state 3 | Not used. 8 Setting and Specifications No. 1 2 00 : 01 : 10 : 11 : Disabled Monitor SELECT IN Monitor STROBE Monitor both SELECT IN and STROBE Selectors 1 and 2: Monitoring the PC ON/OFF state
  • Brother International FAX 2800 | Service Manual - Page 184
    FAX2800/MFC4800 Appendix 3. Circuit Diagrams A. Main PCB B. Network Control Unit (NCU) PCB C. Control Panel PCB D. Power Supply PCBs NOTE: Terms in circuit diagrams : Ceramic capacitor : Chemical capacitor
  • Brother International FAX 2800 | Service Manual - Page 185
    A. Main PCB (1/5)
  • Brother International FAX 2800 | Service Manual - Page 186
    A. Main PCB (2/5)
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    A. Main PCB (3/5)
  • Brother International FAX 2800 | Service Manual - Page 188
    A. Main PCB (4/5)
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    A. Main PCB (5/5)
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    B. NCU PCB (U.S.A., Canada)
  • Brother International FAX 2800 | Service Manual - Page 191
    B. NCU PCB (U.K., Norway, Netherlands, Finland, Denmark, Sweden)
  • Brother International FAX 2800 | Service Manual - Page 192
    B. NCU PCB (Germany, France, Belgium, Switzerland, Ireland, Austria, Spain, Italy, South Africa)
  • Brother International FAX 2800 | Service Manual - Page 193
    B NCU PCB (Asia/Oceania) 1/2
  • Brother International FAX 2800 | Service Manual - Page 194
    ASSY ADRS. ZNR1 SP2 CR2 Q5 D3 JW15 JW29 JW31 JW43 PC1 R4 JW6;JW11 ZD1;ZD2 R1 R2 R9 R11 R12 R13 R22 C1 C10 C11 C12 C13 CN3 CN5 CN4 Q2 R7 R8;R30 R14 R32;R36 R34;R35 R37 C8 C9;C19 C20;C21 C24 JW35;JW38;L5;L6;L7;L8 D4;D5 JW28 #2 R33 C18 JW9;JW34;JW39 Q3 R10 R17 JW2;JW3 NCU B53K479 ASSY OCE NAME
  • Brother International FAX 2800 | Service Manual - Page 195
    C. Control Panel PCB
  • Brother International FAX 2800 | Service Manual - Page 196
    D Power Supply PCB (100-120V) Low-voltage power supply
  • Brother International FAX 2800 | Service Manual - Page 197
    Power Supply PCB (200-240V) D Low-voltage power supply (Europe)
  • Brother International FAX 2800 | Service Manual - Page 198
    Power Supply PCB (200-240V) D Low-voltage power supply (Asia, Oceania)
  • Brother International FAX 2800 | Service Manual - Page 199
    D Power Supply PCB High-voltage power supply
  • Brother International FAX 2800 | Service Manual - Page 200
    June '01 SM-FAX002 8X5601 Printed in Japan
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FACSIMILE EQUIPMENT
SERVICE MANUAL
MODEL: FAX2800/MFC4800