Brother Laser MFC-4800 Service Manual Download Page 199

Page: 199 / 205

NCU PCB

(Asia/Oceania) 2/2

ASSY

NCU B53K479 ASSY

OCE

NCU B53K479 ASSY

ASA

ADRS.

NAME

ZNR1

ENC121D07A

Not Assy

SP2

1/16W 0

Not Assy

CR2

SH-124DZ

Not Assy

DTC123EK

Not Assy

1SS120

Not Assy

JW15

JW(10)

Not Assy

JW29

JW (5)

Not Assy

JW31

Not Assy

JW (5)

JW43

Not Assy

1/16W 0

PC1

Not Assy

TLP521-1G

JW (5)

1/4W 20

JW6;JW11

Not Assy

JW (5)

ZD1;ZD2

Not Assy

MTJ5.1B

Not Assy

1/4W 22K

JW (5)

1/4W 22K

1/16W 1% 2.7K

1/16W 1% 4.7K

R11

1/16W 1% 1.10K

1/16W 1% 910

R12

CERAMIC 16C224B

1/16W 1% 2K

R13

1/16W 1% 3.9K

1/16W 1% 9.1K

R22

1/16W 20K

Not Assy

ALUM-ELEC 50B10-1

ALUM-ELEC 16B100

C10

CERAMIC 50C563B

Not Assy

C11

Not Assy

CERAMIC 50C103B

C12

CERAMIC 50C562B

Not Assy

C13

RESISTOR 0

CERAMIC 16C224B

CN3

MODULAR 4-4P

CN5

B6B-PH

CN4

B12B-PH

2SC5395

1/16W 680

R8;R30

1/16W 1% 270K

1/16W 1% 100K

R14

1/16W 1% 1.6K

1/16W 1% 1K

R32;R36

1/16W 1K

R34;R35

1/16W 1% 13K

1/16W 1% 20K

R37

1/16W 150

ALUM-ELEC 16B100

C9;C19

CERAMIC 50C391B

CERAMIC 50C821B

C20;C21

CERAMIC 25C104B

C24

CERAMIC 50C101B

JW35;JW38;L5;L6;L7;L8

JW (5)

D4;D5

1SS120

Not Assy

JW28

JW (5)

Not Assy

TC7S66F

R33

Not Assy

1/16 1% 1.3K

C18

Not Assy

CERAMIC 25C104

JW9;JW34;JW39

Not Assy

JW (5)

Not Assy

2SK208

R10

1/16W 0

1/16W 1% 1K

R17

Not Assy

1/16W 1% 680

JW2;JW3

Not Assy

JW (5)

Summary of Contents for Laser MFC-4800

Page 1: ...FACSIMILE EQUIPMENT SERVICE MANUAL MODEL FAX2800 FAX2900 FAX3800 MFC4800 FAX8070P MFC9030 MFC9070 ...

Page 2: ...ht 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 ...

Page 3: ...ile equipment is always in best condition for the customer the service personnel must adequately understand and apply this manual This manual is made up of six chapters and appendices CHAPTER 1 GENERAL DESCRIPTION CHAPTER 2 INSTALLATION CHAPTER 3 THEORY OF OPERATION CHAPTER 4 DISASSEMBLY REASSEMBLY AND LUBRICATION CHAPTER 5 MAINTENANCE MODE CHAPTER 6 ERROR INDICATION AND TROUBLESHOOTING Appendix 1...

Page 4: ...tion CDRH Regulations 110 120V Model only The Center for Device and Radiological Health CDRH of the US Food and Drug Administration implemented regulations for laser products on August 2 1976 These regulations apply to laser products manufactured from August 1 1976 Compliance is mandatory for products marketed in the United States The label shown below indicates compliance with the CDRH regulation...

Page 5: ...CHAPTER 1 GENERAL DESCRIPTION ...

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 ...

Page 7: ...quipment appearance and approximate dimensions Weight Machine proper Approx 7 5 kg Machine incl drum unit toner cartridge Approx 8 7 kg In package Approx 11 kg 1 1 2 Components The equipment consists of the following major components W 395 mm 15 6 including handset H 243 mm 9 6 D 359 mm 14 1 ...

Page 8: ...es Yes Caller ID Yes Yes Call Waiting Caller ID Yes Yes Distinctive Ringing Yes Yes Call Manage Yes Yes Hold Mute Key Yes Yes Power Failure Dialing N A N A Speaker Volume Yes 3 steps OFF Yes 3 steps OFF Ring Volume Yes 3 steps OFF Yes 3 steps OFF Handset Volume Yes 2 steps Amplify Yes 2 steps Amplify PBX Feature N A N A Transfer Method No No FAX Internet FAX N A N A Easy Receive Fax Detect Yes Yes...

Page 9: ...n 1 increments 50 to 200 in 1 increments Resolution dpi 200 x 300 200 x 300 First Copy Out Time From Ready Mode Approx 13 sec Approx 13 sec SCANNER No No Color Mono Resolution Optical dpi Resolution Int dpi Gray Scale TWAIN Compliant Operating System PCI Scanner Parallel Serial BUNDLED SOFTWARE For Windows Printer Driver No Available download from Web TWAIN No No Viewer No No Pop Up Menu No No OCR...

Page 10: ...Caller ID Yes Yes Call Waiting Caller ID Yes N A Distinctive Ringing Yes Yes Call Manage Yes Yes Hold Mute Key Yes Yes Power Failure Dialing N A N A Speaker Volume Yes 3 steps OFF Yes 3 steps OFF Ring Volume Yes 3 steps OFF Yes 3 steps OFF Handset Volume Yes 2 steps Amplify Yes 2 steps Amplify PBX Feature N A N A Transfer Method No No FAX Internet FAX N A N A Easy Receive Fax Detect Yes Yes Fax Te...

Page 11: ...nt 50 200 in 1 increments 50 200 in 1 increments Resolution dpi 200 x 300 200 x 300 First Copy Out Time From Ready Mode Approx 13 sec Approx 13 sec SCANNER Yes No Color Mono Mono Resolution Optical dpi 200x400 Resolution Int dpi 1 200x1 200 Gray Scale 256 TWAIN Compliant Operating System Win95 98 98SE Me NT4 0 2000Professinal MacOS 8 6 9 1 PCI Scanner Parallel Serial Parallel USB BUNDLED SOFTWARE ...

Page 12: ...al 8 locations No Speed Dial 100 100 Speaker Phone N A N A Chain Dialing Yes Yes Caller ID N A N A Call Waiting Caller ID N A N A Distinctive Ringing Yes UK DEN only Yes UK DEN only Hold Mute Key N A N A Power Failure Dialing N A N A Speaker Volume Yes 3 steps OFF Yes 3 steps OFF Ring Volume Yes 3 steps OFF Yes 3 steps OFF Handset Volume N A N A PBX Feature Yes Yes Transfer Method Flash Flash FAX ...

Page 13: ...nlargement 50 to 200 in 1 increments 50 to 200 in 1 increments Resolution dpi 200 x 300 200 x 300 SCANNER Color Mono Mono Resolution Optical dpi 200x400 Resolution Int dpi 1 200x1 200 Gray Scale 256 TWAIN Compliant Operating System Win95 98 98SE Me WinNT4 0WS 2000Professional PCI Scanner Parallel Serial Parallel USB BUNDLED SOFTWARE For Windows Printer Driver No Yes TWAIN No Yes Viewer No Yes Pop ...

Page 14: ...peed Dial 100 Speaker Phone N A Chain Dialing Yes Caller ID N A Call Waiting Caller ID N A Distinctive Ringing Yes UK DEN only Hold Mute Key N A Power Failure Dialing N A Speaker Volume Yes 3 steps OFF Ring Volume Yes 3 steps OFF Handset Volume N A PBX Feature Yes Transfer Method Flash FAX Internet FAX N A Easy Receive Fax Detect Yes Fax Tel Switch Yes Enhanced Remote Activate Yes Quick Scan Memor...

Page 15: ...Copy Stack Yes Multi Copy Sort No Reduction Enlargement 50 to 200 in 1 increments Resolution dpi 200 x 300 SCANNER Color Mono Mono Resolution Optical dpi 200x400 Resolution Int dpi 1 200x1 200 Gray Scale 256 TWAIN Compliant Operating System Win95 98 98SE Me WinNT4 0WS 2000Professional PCI Scanner Parallel Serial Parallel USB BUNDLED SOFTWARE For Windows Printer Driver Yes TWAIN Yes Viewer Yes Pop ...

Page 16: ...CHAPTER 2 INSTALLATION ...

Page 17: ...CHAPTER 2 INSTALLATION CONTENTS 2 1 INSTALLING THE UPDATE DATA TO THE FACSIMILE MACHINE 2 1 2 2 SETTING ID CODES TO FACSIMILE MACHINES 2 3 ...

Page 18: ...ine has a power ON OFF switch make sure that the switch is turned off 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 with the two screws 5 While pressing the 5 key on the machine s control panel plug the machine s power cord int...

Page 19: ...sfer 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 4 Check that your computer is connected with the facsimile machine correctly 5 To start the transfer utility transmitting the update data to the flash ROM of the facsimile machine type the following ICEN filename b Then press the ENTER key During downloadin...

Page 20: ...PC and secure it with the two screws 5 Plug the machine s power cord into a wall socket 6 Turn on your PC Operating Procedure 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 labeled to the back of the facsimile machine as an ID code Then press the Enter key The ID setting utility wil...

Page 21: ...CHAPTER 3 THEORY OF OPERATION ...

Page 22: ...t 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 3 6 3 2 2 3 Heat fixing mechanism 3 7 3 2 3 Sensors and Actuators 3 8 3 3 CONTROL ELECTRONICS 3 10 3 3 1 Configuration 3 10 ...

Page 23: ...3 1 3 1 OVERVIEW ...

Page 24: ...eding and ejecting mechanisms Print process mechanism consisting of charging exposing developing transferring and erasing processes Heat fixing mechanism SENSORS AND ACTUATORS Document feeding and ejecting mechanism Document scanning mechanism SCANNER MECHANISM Paper ejecting mechanism Heat fixing mechanism Print process mechanism With paper feeding mechanism Paper pulling in and registration mech...

Page 25: ...ts feeds those documents into the machine starting from the bottom sheet first page to the top last page page by page Each document advances with the document feed roller ASSY to the scanner and then it is fed 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 LED array illuminating documents a self focus ...

Page 26: ...3 4 3 2 2 Laser Printing Mechanism 3 2 2 1 Paper pulling in registration feeding and ejecting mechanism ...

Page 27: ... of the pull in roller drive gear so as to release the clutch gear the clutch gear rotates and the pull in roller drive gear does not rotate This way the clutch gear switches the transmission of the motor rotation to the pull in roller drive gear on and off The solenoid on off timing and the clutch release lever timing allow this mechanism to pull in a sheet and register it against the registratio...

Page 28: ...ess 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 processes ...

Page 29: ...3 7 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 ...

Page 30: ...ing edge of a new page has reached the starting position and when the scan for that page is over Cover sensor which detects whether the top cover is closed Registration sensor which detects the leading and trailing edges of paper which allows the controller to determine the registration timing and check paper jam Paper ejection sensor which detects whether the recording paper goes out of the machi...

Page 31: ...3 9 Location of Sensors and Actuators ...

Page 32: ...TRONICS 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 ...

Page 33: ...CHAPTER 4 DISASSEMBLY REASSEMBLY AND LUBRICATION ...

Page 34: ... Top Cover 4 17 4 1 7 CIS Unit 4 19 4 1 8 Hook Switch PCB 4 20 4 1 9 Document Feed Roller ASSY Scanner Drive Unit and Document Ejection Roller ASSY 4 21 4 1 10 Separation Roller and its Gear 4 23 4 1 11 Heat fixing 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...

Page 35: ... 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 ...

Page 36: ... the document feed roller ASSY or ejection roller ASSY if at all possible Once removed they will become unusable and new gears will have to be put back in 6 When using soldering irons and other heat generating tools take care not to damage the resin parts such as wires PCBs and covers 7 Before handling the PCBs touch a metal portion of the machine to discharge static electricity otherwise the elec...

Page 37: ...aptite bind B M4x12 3 0 98 0 20 10 2 Main shield Taptite cup S M3x6 2 0 69 0 20 7 2 Parallel interface connector Taptite pan S M3x12 2 0 69 0 20 7 2 Main PCB Taptite cup S M3x6 1 0 69 0 20 7 2 Bottom plate Taptite bind B M4x12 5 0 98 0 20 10 2 Taptite cup S M3x6 4 0 69 0 20 7 2 Low voltage power supply PCB Taptite cup S M3x6 2 0 69 0 20 7 2 Low voltage insulator sheet Grounding wire Screw pan wash...

Page 38: ... the paper support 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 find it on the flow and learn its number in this case You need to remove parts numbered and so as to acc...

Page 39: ...4 4 Disassembly Order Flow ...

Page 40: ...cument 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 ...

Page 41: ...oard 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 ...

Page 42: ...4 7 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 ...

Page 43: ...xt pull out the pawled bushing R At the left end of 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 comes off ...

Page 44: ...4 9 6 Turn the ASF upside down then remove the registration sensor actuator ...

Page 45: ...nd pinch roller shaft 8 At the right end of the paper feed roller remove the screw and take off the grounding leaf spring R if you have not removed it in step 4 above 9 At the left end of the paper feed roller remove two screws and take off the grounding leaf spring L pawled PF gear and idle gear Then remove the paper feed roller ...

Page 46: ...he ASF and then attach the black film to the chute If you first attach the black film to the chute and 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 into place ...

Page 47: ...4 12 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 ...

Page 48: ... up the control panel 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 upper section into the top cover and then snap the handset mount into place taking care not ...

Page 49: ...e the pinch rollers and their related parts press the lock arm to the rear and shift the pinch roller shaft to the left 4 To replace the anti static 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 th...

Page 50: ... 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 latches 11 Slightly lift up the control panel PCB then unlock the LCD cable connector and disconnect the LCD flat cable Next unlock the FPC key connector and disconnect the FPC key ...

Page 51: ... 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 fingerprints or dust off the LCD surface and control panel window with a soft cloth A new LCD is covered with a protection sheet Before installing it remove the protection sheet ...

Page 52: ...W main harness scanner motor harness and FG wire from the two cable guides provided on the main cover See Subsection 4 1 26 Harness routing D 5 Open the top cover 6 At each of the right and left sides of the top cover remove the screw from the link stopper Then pull the link stopper outwards and open the top cover further 7 Turn the top cover upright and then lift it up to the rear 8 Turn each lin...

Page 53: ...those three harnesses on the main cover as illustrated in Subsection 4 1 26 Harness routing D and E When routing 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 may prevent the FG wire from working out of the cable guides When disposing of top covers remove two leaf springs from each top ...

Page 54: ...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 right After installation wipe fingerprints or dust off the CIS surface with a soft cloth When reinstalling the CIS shield plate secure it to the top cover together with the feed roller grounding spring and FG wire The FG wire should be ro...

Page 55: ...B 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 ...

Page 56: ...n remove the document feed roller ASSY together with the pawled bushing 2 At the right end of the pressure roller shaft press the latch to the rear and take out the pressure rollers and their shaft Then remove the pressure 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 ...

Page 57: ...ector up as shown above Before putting the scanner drive unit into the top cover make sure that the stopper of bushing L a in Figure A given on the next page faces up when viewed 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 ...

Page 58: ...htly 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 out from the top cover 3 Move the separation roller to the left and take it out together with its bushing S b 4 Slightly push down the lock arm again and remove the bushing L c to the left ...

Page 59: ...shing L c and then insert the right end to the top cover with the stopper of bushing S b facing down See Figure B 4 Set bushing L a onto the separation roller gear shaft with its flange facing towards the gear Insert the right end of the gear shaft through the cutout provided in the top cover and engage it with the separation roller shaft Make sure that the separation roller gear is locked by the ...

Page 60: ...e 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 from the EL eraser lamp board 3 Remove the paper ejection sensor actuator from the bottom of the heat fixing unit ...

Page 61: ...with your right hand pull out the FU lamp from the heater roller CAUTION Do not touch the FU lamp If you have touched it clean it thoroughly with alcohol Reassembling Notes When setting the FU lamp into the heat fixing unit 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 Whe...

Page 62: ...or mirror NOTE On the small PCB at the right side of the laser unit is a 2 pin connector which is for the adjustment in the factory Do not disturb it Reassembling 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 to...

Page 63: ...crews 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 a and c Taptite cup S M3x6 b Taptite pan S M3x12 Reassembling Notes Be sure to route the harnesses and flat cable as illustrated in Subsection 4 1...

Page 64: ...intenance mode Then perform the following EEPROM customizing Function code 74 CIS scanner area setting Function code 55 Refer to CHAPTER 5 Subsections 5 3 12 and 5 3 11 Install the update program onto the flash ROM For details about the installation procedure refer to CHAPTER 2 The DOWNLOADING is shown on the LCD The PLEASE WAIT appears on the LCD The calendar clock appears Make the equipment ente...

Page 65: ...4 30 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 ...

Page 66: ...own wires Low voltage insulator sheet Low voltage power supply PCB Low voltage power harness f Openings provided in the power supply shield g Opening provided in the power supply shield Main cover placed upside down e U shaped cutout Heater harness Grounding wire a b c d Power inlet support Opening provided in the new type of the power inlet support a b and d Taptite cup S M3x6 c Screw pan washer ...

Page 67: ... opening 1 Route the grounding wire between the boss and the power supply shield as shown below 2 Push down the ferrite cores of the AC lead wires and grounding wire 3 Secure the grounding terminal to the power inlet support with screw c at an angle shown below Power supply shield Boss Route the grounding wire between the boss and the power supply shield Push down these ferrite cores Secure the gr...

Page 68: ...n shown below to bring the ferrite cores closer to the opening 2 Fasten the AC lead wires to the power inlet support with a binder 2 m m m a x View 1 mm max Pull the AC lead wires in this direction 1 mm min 3 to 9 mm Fasten the AC lead wires with a binder Power inlet support Power inlet support Power inlet support A B A View B 3 Secure the grounding wire to the power inlet support with screw c ...

Page 69: ...ltage insulator sheet High voltage power flat cable EL eraser lamp harness Main cover placed upside down High voltage power supply PCB Take care not to bend this high voltage plate Reassembling Notes Fold the high voltage power flat cable and route it as illustrated above Before reinstalling the high voltage power supply PCB check the high voltage contacts for any toner particles paper dust or dir...

Page 70: ...sor 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 place with the label side facing outwards and with its harness directed as shown above ...

Page 71: ...or 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 harness through U shaped cutout e as shown above ...

Page 72: ... 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 ...

Page 73: ... 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 ...

Page 74: ...ar drive unit as illustrated above When putting the gear drive unit back into the main cover route the solenoid harness and main motor harness along the outside of the gear drive unit Be sure to sandwich the grounding plate between the contact plate and gear drive unit See the illustration given on the previous page After securing the gear drive unit route the heater harness through the cable guid...

Page 75: ...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 ...

Page 76: ...e cover L Remove the two screws While pushing the left side of the scanner grounding plate to the right in the direction of arrow lift up the front end of the side cover L and pull it to the front arrow NOTE If you pull up the side cover L without pushing the left side of the scanner grounding plate the X section of the side cover L will catch on the scanner grounding plate ...

Page 77: ...t up the scanner grounding plate and unhook the spring 4 You may peel off the anti static brush from the scanner grounding plate NOTE Once removed the anti static brush will become unusable and a new one will have to be put back in Reassembling Notes Before attaching a new anti static brush onto the scanner grounding plate wipe the surface of the attaching place with a cloth dampened with alcohol ...

Page 78: ... 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 Notes When attaching a new EL board bring the right end into contact with the rib provided on the main cover ...

Page 79: ...4 42 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 ...

Page 80: ... 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 ...

Page 81: ...4 44 Harness routing E CIS harness on the top of the main cover Harness routing F Heater harness on the top of the main cover ...

Page 82: ...4 45 Harness routing G Laser diode harness polygon motor flat cable and toner sensor harness on the laser unit ...

Page 83: ...er harness Gear drive unit Cable guides Cable guide Latch Speaker Speaker harness Solenoid harness Main motor harness AC power cable Grounding wire which should route on the heater harness which should be supported by the looped grounding wire For the power inlet support having no opening For the power inlet support having an opening 2 m m m a x 1 mm max Pull the AC lead wires in this direction Fa...

Page 84: ...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 ...

Page 85: ...ase 2 mm dia ball Rice sized pinch of grease 3 mm dia ball Two rice sized pinches of grease 4 mm dia ball Molykote EM D110 Dow Corning EMD1 Molykote grease PG 662 Dow Corning Conductive grease FLOIL GE676 Kanto Kasei Ltd 1 Separation pad ASF Separation pad Apply thin coat of grease to these sections with a brush where the separation pad is to be mounted EMD1 EMD1 EMD1 ...

Page 86: ...4 48 2 Scanner drive unit 3 Separation roller ...

Page 87: ...4 49 4 Document feed roller ...

Page 88: ...CHAPTER 5 MAINTENANCE MODE ...

Page 89: ... 6 Operational Check of LCD 5 12 5 3 7 Operational Check of Control Panel PCB 5 12 5 3 8 Receiver Volume Adjustment applicable to the American version only 5 14 5 3 9 Sensor Operational Check 5 15 5 3 10 Fine Adjustment of Scanning Start End Position 5 16 5 3 11 CIS Scanner Area Setting 5 17 5 3 12 EEPROM Customizing 5 17 5 3 13 Display of the Equipment s Log Information 5 18 5 3 14 Equipment Erro...

Page 90: ...ns listed in Section 5 2 enter the corresponding 2 digit function code with the numerical keys on the control panel The details of each maintenance mode function are described in Section 5 3 NOTES Pressing the 9 key twice in the initial stage of the maintenance mode makes the equipment exit from the maintenance mode restoring it to the standby state Pressing the Stop key after entering only one di...

Page 91: ... Control Panel PCB Check of Keys and Buttons 5 3 7 5 12 14 15 16 Receiver Volume Adjustment applicable to the American version only 5 3 8 5 14 32 Sensor Operational Check 5 3 9 5 15 54 Fine Adjustment of Scanning Start End Position 5 3 10 5 16 55 CIS Scanner Area Setting 5 3 11 5 17 74 EEPROM Customizing 5 3 12 5 17 80 Display of the Equipment s Log Information 5 3 13 5 18 82 Equipment Error Code ...

Page 92: ... 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 end users to follow the procedure given below 1 Press the Menu and Receive Mode keys in this order The LCD clears the current display NOTE The Receive Mode key is inoperable during standby for redialing and timer 2 Press the 0 key 3 Enter th...

Page 93: ...ll be initialized These will not be initialized Received FAX messages temporarily stored in the flash memory Not applicable to the American version EEPROM customizing code 4 digit These will not be initialized Note that the first digit of the 4 digit customizing code will be initialized to 0 If the code is 1001 for example it will be initialized to 0001 NOTE If you replace the main PCB with one us...

Page 94: ... level data and takes in the scanning compensation reference data 1 Press the 0 and 5 keys in this order in the initial stage of the maintenance mode The WHITE LEVEL 1 will appear on the LCD 2 The equipment prints out the scanning compensation data list containing the following a LED light intensity value 1 byte b A D high value 1 byte c Compensation data for background color 1 byte d 2 value quan...

Page 95: ...5 6 Scanning Compensation Data List a b c d e ...

Page 96: ...llowable up to the ADF capacity The DOC READY will appear on the LCD 2 Press the 0 and 8 keys in this order While counting the documents the equipment feeds them in and out displaying the current count on the LCD as shown below Current count 1st page in this example 3 After showing the final count the equipment beeps for one second To return the equipment to the initial stage of the maintenance mo...

Page 97: ... 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 maintenance mode The figure below shows test pattern 1 Test Pattern 1 ...

Page 98: ...de setting WSW04 TRANSFER facility setting WSW05 1st dial tone and busy tone detection WSW06 Pause key setting and 2nd dial tone detection WSW07 Dial tone setting 1 WSW08 Dial tone setting 2 WSW09 Protocol definition 1 WSW10 Protocol definition 2 WSW11 Busy tone setting WSW12 Signal detection condition setting WSW13 Modem setting WSW14 AUTO ANS facility setting WSW15 REDIAL facility setting WSW16 ...

Page 99: ...SWXX 0 0 0 0 0 0 0 0 3 Use the right and left arrow keys to move the cursor to the selector position to be modified 4 Enter the desired number using the 0 and 1 keys 5 Press the Set key This operation saves the newly entered selector values onto the EEPROM and readies the equipment for accepting a firmware switch number 6 Repeat steps 2 through 5 until the modification for the desired firmware swi...

Page 100: ...e 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 the configuration list as shown in the figure below 3 Upon completion of printing the equipment returns to the initial stage of the maintenance mode Configuration List ...

Page 101: ...tion Operating Procedure 1 Press the 1 and 3 keys in this order in the initial stage of the maintenance mode The 00 will appear on the LCD 2 Press the keys and buttons in the order designated in the illustration shown below The LCD shows the corresponding number in decimal notation each time a key or button is pressed Check that the displayed number is correct by referring to the illustration belo...

Page 102: ...5 13 Key Button Entry Order ...

Page 103: ...ceiver volume is not appropriate proceed to the following steps 3 Press the 1 and 6 keys in this order in the initial stage of the maintenance mode The LCD shows the current receiver volume default High 4 If the current receiver volume is not High use the up or down arrow key to choose High 5 Press the Fax Start key The equipment enters the receiver volume adjustment mode and shows the PWM duty ra...

Page 104: ...CVRGPO TNHK on American models DFDRCVRGPO TN on European models Given below is the relationship between the LCD indication sensor names and sensor status LCD Sensors Sensing status DF Document front sensor No document detected DR Document rear sensor No document detected CV Cover sensor Top cover closed RG Registration sensor No paper detected PO Paper ejection sensor No paper jam TN Toner sensor ...

Page 105: ...st the correction value to 11 levels from 5 to 5 mm 2 To increase the correction value press the left arrow key to decrease it press the right arrow key If you press the Stop key the equipment returns to the initial stage of the maintenance mode without making change of the correction value 3 Press the Set key The ACCEPTED appears on the LCD After one second the equipment returns to the initial st...

Page 106: ...language function settings and firmware switch settings The customizing codes list is given in Appendix 1 NOTE If you replace the main PCB be sure to carry out this procedure Operating Procedure 1 Press the 7 and 4 keys in this order in the initial stage of the maintenance mode The current customizing code e g 9101 in the case of MFC4800 USA version appears 2 Enter the desired customizing code e g...

Page 107: ...nce produced 4 Drum count indicating how many times the drum has been rotated 5 Drum change count indicating how many times drum replacement has been made 6 Toner change count indicating how many times toner replacement has been made 7 Copy page count indicating how many copies have been made 8 PC print page count indicating how many pages the equipment has been printed as an output device of the ...

Page 108: ...e 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 problem call the user s equipment at a remote location from your equipment 2 If the line is connected have the user perform the following 1 Press...

Page 109: ...y mode so as not to exit from the memory security mode NOTE Carrying out this procedure will lose passwords previously entered but retain FAX messages received in the memory security mode Operating Procedure 1 When the SECURE MODE is displayed on the LCD press the Menu and keys at the same time Within two seconds start to press the 2 7 9 0 and 0 keys The memory security mode will be canceled and t...

Page 110: ...CHAPTER 6 ERROR INDICATION AND TROUBLESHOOTING ...

Page 111: ... 6 1 2 Communications Errors 6 7 6 2 TROUBLESHOOTING 6 17 6 2 1 Introduction 6 17 6 2 2 Precautions 6 17 6 2 3 Checking prior to Troubleshooting 6 17 6 2 4 Troubleshooting Procedures 6 19 1 Control panel related 6 19 2 Telephone related 6 19 3 Communications related 6 20 4 Paper document feeding related 6 20 5 Print image related 6 21 Location of High voltage Contacts and Grounding Contacts 6 28 ...

Page 112: ...odes listed in 2 will appear on the LCD 1 Error messages on the LCD Messages on the LCD Probable Cause CHANGE DRUM SOON The service life of the drum unit will expire soon This message appears for one minute You can turn this message indication on or off by the maintenance mode function code 10 WSW31 selector 8 Refer to Appendix 2 CHECK ORIGINAL Remove original and then press STOP KEY These message...

Page 113: ... using lever then press FAX START These messages appear alternately Even after paper pick up operation the registration sensor does not detect paper CHECK PAPER SIZE Reload correct paper then press FAX START These messages appear alternately The registration sensor detects that paper shorter than the specified length has been fed This message appears only when a received message is printed CLEAN U...

Page 114: ... on or the top cover is opened and then closed the registration sensor or paper ejection sensor is ON 4 The paper ejection sensor sticks to ON 5 The paper ejection sensor does not come ON within the specified time length after the registration sensor has come ON 6 The paper ejection sensor is kept ON after the specified time length although the registration sensor has come ON PLS OPEN COVER To dis...

Page 115: ...r 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 TONER LOW The toner sensor has detected that there is not enough toner If only an alarm beep is heard without any message on the LCD when the equipment is powered up the ROM or RAM will be defective ...

Page 116: ...n standby 79 Toner thermistor harness disconnected or broken 80 Paper size setting error 82 Paper feeding error 83 Paper jam The registration sensor remains ON 84 Paper jam The paper ejection sensor remains ON 88 Paper jam Even after the registration sensor has gone OFF the paper ejection sensor still stays OFF A1 Top cover opened A2 Document too long to scan A3 Document not detected by the docume...

Page 117: ...error in EEPROM E8 Data scanning error during transmission EA Document removed in phase B F5 EOL not found in page memory transmission mode F6 PC interface error Error codes in parentheses do not appear in the MACHINE ERROR X X since those errors are displayed as messages described in 1 Error messages on the LCD In the maintenance mode Function code 82 those error codes may be displayed ...

Page 118: ...tions 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 ...

Page 119: ... tone detected after dialing 17 07 No response from the calling station in receiving 1A 01 Calling impossible due to memory full Available in German versions only 2 Command reception Code 1 Code 2 Causes 20 01 Unable to detect a flag field 20 02 Carrier was OFF for 200 ms or longer 20 03 Abort detected 1 in succession for 7 bits or more 20 04 Overrun detected 20 05 A frame for 3 seconds or more re...

Page 120: ...sion 32 02 Remote terminal not ready for polling 32 10 Remote terminal not equipped with password function or its password switch OFF 32 11 Remote terminal not equipped with or not ready for confidential mail box function 32 12 Remote terminal not equipped with or not ready for relay broadcasting function 32 13 No confidential mail in the remote terminal 32 14 The available memory space of the rem...

Page 121: ...cturer code not coincident 40 11 Unregistered group code entered for relay broadcasting function or the specified number of broadcasting subscribers exceeding the limit 40 12 Retrieval attempted when not ready for retrieval 40 13 Polled by any other manufacturers terminal while waiting for secure polling 40 17 Invalid resolution selected 5 Command reception checking the NSF and DIS after transmiss...

Page 122: ... 03 Polling ID not coincident 63 04 Entered confidential mail box ID uncoincident with the mail box ID 63 05 Relay broadcasting ID not coincident 63 06 Entered retrieval ID uncoincident with that of the mail box ID 7 DCN reception Code 1 Code 2 Causes 74 DCN received 8 TCF transmission reception Code 1 Code 2 Causes 80 01 Fallback impossible ...

Page 123: ...eceive buffer full during operation except receiving into memory A0 13 Decoding error continued on 500 lines A0 14 Decoding error continued for 10 seconds A0 15 Timeout Five seconds or more for one line transmission A0 16 RTC not found and carrier OFF signal detected for 6 seconds A0 17 RTC found but no command detected for 60 seconds A0 18 Receive buffer full during receiving into memory A0 19 Un...

Page 124: ... to detect JM C0 03 Unable to detect CM C0 04 Unable to detect CJ C0 10 Cannot finish V 34 negotiation or training C0 11 Modem error detected during V 34 negotiation or training For modem error details refer to the table given on the next page C0 20 Modem error detected during sending of commands For modem error details refer to the table given on the next page C0 21 Modem error detected during re...

Page 125: ...ve control channel 91 Error occurred in the first CC train 92 Timeout waiting for PPh 93 Tone A B detected in the CC retrain 94 Timeout waiting for ALT 95 ACh found 96 FED turned off during reception of CC data 97 Timeout waiting for turning off the CC A1 Retraining forced for problems not fixed in phase 2 B0 Problem with S sequence of HDX resync B1 FED turned off in the S sequence of HDX resync B...

Page 126: ...ar in phase 4 D5 Timeout waiting for S in phase 4 D6 Timeout waiting for MP D8 Timeout waiting for E DA Timed out in re negotiation of the transmitter rate DB Timed out in the transmitter MPh E2 Retraining detected in phase 2 E3 Retraining detected in phase 3 E4 Retraining detected in phase 4 FE DTR turned off during retraining FF Tx set abort flag 71 Did not write onto the first mapping frame 13 ...

Page 127: ...6 16 14 Equipment error Code 1 Code 2 Causes FF 00 Burn in operation canceled by pressing the Stop key FF FF Unrecoverable MODEM error ...

Page 128: ...tion of the machine to discharge static electricity charged in your body When repairing the PCBs handle them with extra care After repairing the defective section be sure to check again if the repaired section works correctly Also record the troubleshooting procedure so that it would be of use for future trouble occurrence 6 2 3 Checking prior to Troubleshooting Prior to proceeding to the troubles...

Page 129: ...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 recording paper is used 2 The recording paper is not dampened ...

Page 130: ...e Check 1 No phone call can be made FPC key Control panel PCB NCU PCB Main PCB 2 Speed dialing or one touch dialing will not work Ordinary dialing function other than the speed and one touch dialing If it works normally check the main PCB if not refer to item 1 above 3 Speaker silent during on hook dialing Ordinary dialing function other than the on hook dialing with the hook key If it works norma...

Page 131: ...ode function code 32 Refer to CHAPTER 5 Subsection 5 3 9 Document front sensor actuator and document rear sensor actuator Main PCB 2 Document not fed ADF and its related sections Scanner motor and its harness Document feed roller and its related gears Main PCB 3 Document double feeding ADF parts Nip related parts 4 Recording paper not fed ASF Drum unit Heat fixing unit Drive gear ASSY Main PCB 5 R...

Page 132: ... Contacts in the illustration given on page 6 28 Check that the grounding plate is sandwiched between the contact plate and gear drive unit Refer to CHAPTER 4 Subsection 4 1 21 page 4 36 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 t...

Page 133: ...r and high voltage power supply PCB Contacts in the illustration given on page 6 28 Clean the grounding contacts on the drum unit gear drive unit and main cover Contacts and in the illustration given on page 6 28 Check the connection of the high voltage power flat cable on the main PCB and high voltage power supply PCB Replace the drum unit Replace the high voltage power supply PCB Replace the mai...

Page 134: ... unit 6 Black vertical streaks on gray background At the printer side Clean the laser beam window glass on the laser unit Replace the laser unit 7 Black and blurred horizontal stripes At the printer side Slide the wire cleaner to clean the corona wire inside the drum unit If they appear at 94 mm or 17 mm intervals replace the drum unit If they appear at 54 mm intervals replace the heat fixing unit...

Page 135: ...he drum unit 10 White horizontal stripes At the printer side Replace the drum unit 11 Dropout white spots or hollow print At the printer side Check the connection of the high voltage power flat cable on the main PCB and high voltage power supply PCB Replace the toner cartridge Gently wipe off the surface of the photo sensitive drum with a cotton swab Replace the drum unit Replace the high voltage ...

Page 136: ... this chapter NCU PCB Main PCB At the scanner Check the following components Document take in roller separation roller and their related sections Document feed roller and its related gears Scanner motor and its harness Main PCB At the printer side Check that the laser unit is secured with the screws without looseness Check the connection of the polygon motor harness Check the connection of the las...

Page 137: ...Replace the drum unit Check the fitting of the heater thermistor Replace the heat fixing unit Replace the low voltage power supply PCB 17 Ghost At the printer side Instruct the user to use paper of the recommended weight 16 to 42 lb m2 Replace the drum unit Replace the high voltage power supply PCB 18 Black spots At the printer side Gently wipe off the surface of the photo sensitive drum with a co...

Page 138: ...t the user to use paper of the recommended weight 16 to 42 lb m2 Clean the toner sensors LED and light receiver Check the toner sensor harnesses Replace the toner cartridge Replace the drum unit Replace the high voltage power supply PCB 22 Toner specks At the printer side Instruct the user to use paper of the recommended weight 16 to 42 lb m2 Replace the toner cartridge Replace the drum unit ...

Page 139: ...6 28 Location of High voltage Contacts and Grounding Contacts Grounding Contacts High voltage Contacts For transfer roller For developer roller For corona wire For grid For cleaner roller Drum unit ...

Page 140: ...FAX2800 FAX2900 FAX3800 MFC4800 FAX8070P MFC9030 MFC9070 Appendix 1 EEPROM Customizing Codes ...

Page 141: ...aintenance mode The current customizing code e g 9101 in the case 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 and returns to the initial stage of the maintenance mod...

Page 142: ...G KONG 0040 ARGENTINA 0101 BRAZIL 9101 KOREA 0040 Model Versions FAX8070P MFC9030 MFC9070 GERMANY 0003 0203 0103 U K 0004 0204 0104 FRANCE 0005 0205 0105 NORWAY 0007 0107 BELGIUM 0008 0108 NETHERLANDS 0009 0109 SWITZERLAND 0010 0110 IRELAND 0004 0104 FINLAND 0012 0112 DENMARK 0013 0113 AUSTRIA 0003 0103 SPAIN 0015 0115 ITALY 0016 0116 SOUTH AFRICA 0004 0104 SWEDEN 0026 0126 POLAND 0039 0139 EURO G...

Page 143: ...FAX2800 FAX2900 FAX3800 MFC4800 FAX8070P MFC9030 MFC9070 Appendix 2 Firmware Switches WSW ...

Page 144: ...communications mode setting 24 WSW21 TAD setting 1 25 WSW22 ECM setting 25 WSW23 Communications setting 26 WSW24 TAD setting 2 27 WSW25 TAD setting 3 28 WSW26 Function setting 4 29 WSW27 Function setting 5 30 WSW28 Function setting 6 31 WSW29 Function setting 7 32 WSW30 Function setting 8 32 WSW31 Function setting 9 33 WSW32 Function setting 10 34 WSW33 Function setting 11 34 WSW34 Function settin...

Page 145: ...upporting 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 the number of pulses to be generated in pulse dialing N Dialing N generates N pulses Dialing 0 generates 10 pulses N 1 Dialing N generates N 1 pulses 10 N Dialing N generates 10 N pulses Selectors 3 and 4 Break time length in pulse d...

Page 146: ...ssion time length No 1 2 0 0 70 ms 0 1 80 ms 1 0 90 ms 1 1 100 ms 3 4 Min pause in tone dialing No 3 4 0 0 70 ms 0 1 80 ms 1 0 90 ms 1 1 140 ms 5 8 Attenuator for pseudo ring backtone to the line selectable in the range of 0 15 dB 0 0 dB 1 8 dB 0 0 dB 1 4 dB 0 0 dB 1 2 dB 0 0 dB 1 1 dB Selectors 1 through 4 Tone signal transmission time length and Min pause in tone dialing These selectors set the ...

Page 147: ...nd 7 are not applicable where no PABX is installed Selectors 1 and 5 CNG detection when sharing a modular wall socket with a telephone These selectors determine whether or not the equipment detects a CNG signal when a line is connected to a telephone sharing a modular wall socket with the equipment Upon detection of CNG signals by the number of cycles specified by these selectors the equipment int...

Page 148: ...X Setting both of these selectors to 1 activates the dial tone detection function so that the equipment starts dialing upon detection of a dial tone when a line is connected Other setting combinations deactivate the dial tone detection function so that the equipment starts dialing after the specified WAIT 3 5 5 0 or 7 0 sec without detection of a dial tone when a line is connected ...

Page 149: ... Selector 1 Earth function in transfer facility This selector determines whether or not the earth function is added to the transfer setting menu to be accessed by the function switch Selectors 5 and 6 Earth time length for earth function These selectors set the short circuiting time length of the telephone line La or Lb to ground This setting is effective only when the earth function is selected f...

Page 150: ...on function which detects the 1st dial tone issued from the PSTN when a line is connected to the PSTN Setting all of these selectors to 1 activates the dial tone detection function so that the equipment starts dialing upon detection of a dial tone when a line is connected For the detecting conditions of the 1st dial tone refer to WSW07 and WSW08 Other setting combinations deactivate the dial tone ...

Page 151: ...disconnect the line Setting selectors 5 and 6 to 0 and 1 respectively makes the equipment detect a busy tone only after dialing and disconnect the line Setting both of selectors 5 and 6 to 1 makes the equipment detect a busy tone before and after dialing and then disconnect the line Selector 7 Busy tone detection in automatic receiving mode This selector determines whether or not the equipment aut...

Page 152: ...sec WAIT 1 0 0 14 sec WAIT 1 1 0 2nd dial tone detection only in pulse dialing DP system 1 0 1 2nd dial tone detection 1 1 1 both in DP and push button PB dialing system 4 6 Detection of 2nd dial tone No 4 5 6 0 0 0 50 ms 0 0 1 210 ms 0 1 0 500 ms 0 1 1 800 ms 1 0 0 900 ms 1 0 1 1 5 sec 1 1 0 2 0 sec 1 1 1 2 5 sec 7 No of 2nd dial tone detection times 0 Once 1 Twice 8 2nd dial tone interrupt detec...

Page 153: ... the equipment will insert a WAIT of 3 5 seconds If no 2nd dial tone is received within the specified time length set by WSW08 the equipment will disconnect the line if in automatic dialing or it will start transmitting the dial signal if given after depression of the Pause key in hook up dialing Selectors 4 through 6 Detection of 2nd dial tone Upon detection of the 2nd dial tone for the time leng...

Page 154: ...ne 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 dialing to be detected This setting is effective only when selectors 1 through 3 of WSW05 are set to 1 1 1 Selector 3 Line current detection This selector determines whether or not the equipment should detect a line current before ...

Page 155: ... 0 1 36 dBm 1 1 0 39 dBm 1 1 1 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 for the time length set by these selectors the equipment starts dialing This setting is effective only when selectors 1 through 3 of WSW05 are set to 1 1 1 Selector...

Page 156: ...to 64 octet frames Remarks The error correction mode ECM is a facsimile transmission manner in which the equipment divides a message into frames for transmission so that if any data error occurs on the transmission line the equipment retransmits only those frames containing the error data Selector 2 Use of non standard commands If this selector is set to 0 the equipment may use non standard comman...

Page 157: ...the CML ON OFF operation Selector 2 Time length from transmission of the last dial digit to CML ON This selector sets the time length from when the equipment transmits the last dial digit until the CML relay comes on Selector 3 Time length from CML ON to CNG transmission This selector sets the time length until the equipment transmits a CNG after it turns on the CML relay Selector 4 Time length fr...

Page 158: ...n 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 range These selectors set the frequency band for busy tone to be detected Selectors 4 through 8 ON OFF time length ranges These selectors set the ON and OFF time length ranges for busy tone...

Page 159: ...ing signal Ci for a time length which is greater than the value set by selectors 1 and 2 and less than the value set by selectors 3 and 4 then it interprets the Ci signal as OFF Selectors 5 and 6 Detecting time setting These selectors set the time length required to make the equipment acknowledge itself to be called That is if the equipment continuously detects calling signals with the frequency s...

Page 160: ...als on a line Attenuation in the high band frequency is greater than in the low band frequency Set these selectors according to the distance from the telephone switchboard to the facsimile equipment Selectors 3 and 4 Reception level These selectors set the optimum receive signal level Selectors 5 through 8 Modem attenuator These selectors are used to adjust the transmitting level of the modem when...

Page 161: ... to 4 times 1 0 1 0 2 to 5 times 1 0 1 1 2 to 6 times 1 1 0 0 1 to 10 times 1 1 0 1 2 to 10 times 1 1 1 0 3 to 5 times 1 1 1 1 4 to 10 times Selectors 1 through 4 Frequency band 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 sele...

Page 162: ...E 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 3 through 6 at intervals set by selectors 1 and 2 This setting is effective only when selector 7 is set to 0 Selectors 7 Redialing for no response sent from the called termin...

Page 163: ...T 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 to select the maximum length of a document to be sent Selector 8 Stop key pressed during reception If this selector is set to 1 pressing the Sto...

Page 164: ...ectors activate or deactivate the alarm function which sounds an alarm when the communication is completed with the handset being off the hook Selector 5 Calendar clock type If this selector is set to 0 USA the MM DD YY hh mm format applies if it is set to 1 Europe the DD MM YY hh mm format applies DD is the day MM is the month YY is the last two digits of the year hh is the hour and mm is the min...

Page 165: ...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 tone for the time length specified by these selectors The setting specified by these selectors becomes effective only ...

Page 166: ...t attempts to establish the transmission link via the modem If the establishment fails the equipment automatically steps down to the next highest speed and attempts to establish the transmission link again The equipment repeats this sequence while stepping down the transmission speed to the last choice specified by selectors 4 through 6 If the modem always falls back to a low transmission speed e ...

Page 167: ... if the facsimile equipment malfunctions in overseas communications According to the communications error state select the signal specifications Setting selector 2 to 1 allows the equipment to use 1100 Hz CED signal instead of 2100 Hz in receiving operation This prevents malfunctions resulting from echoes since the 1100 Hz signal does not disable the echo suppressor ES while the 2100 Hz signal doe...

Page 168: ... 1 4 0 0 1 2 0 0 1 1 ECM Error correction mode NOTE Selector 3 is applicable to the American version only but not applicable to those models equipped with high speed modem NOTE Selectors 5 through 8 are applicable to the Asian version only Selector 3 Call Waiting Caller ID Setting this selector to 0 allows the user to decide whether or not to interrupt the current call when a new call comes in If ...

Page 169: ...cted If it is set to 1 the called station starts counting zeros upon detection of 10 ms successive zeros 50 ms after the head of a series of zeros is detected In this case if the detection of 10 ms successive zeros 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...

Page 170: ... and 4 Time length from CML ON to start of pseudo ring backtone transmission These selectors set the length of time from CML ON up to the start of pseudo ring backtone transmission In those versions which have an OGM facility the settings made by these selectors also apply 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...

Page 171: ...and 2 Delay time for starting detection of voice signal These selectors take effect only in TAD mode when the external TAD is connected to the equipment The equipment delays starting detection of the voice signal by the time length specified by these selectors The total length of the delay time specified by these selectors and the maximum waiting time specified by WSW21 selectors 1 through 5 shoul...

Page 172: ...nt reading into the temporary memory in in memory message transmission If this selector is set to 0 the equipment waits for document reading into the memory to complete and then starts dialing This enables the equipment to list the total number of pages in the header of the facsimile message Selectors 4 and 5 No of CNG cycles to be detected The equipment interprets a CNG as an effective signal if ...

Page 173: ...mmable key This selector defines a programmable key as a TEL key or TEL POLLING key Setting this selector to 1 allows the programmable key to function as either a TEL or POLLING key if pressed when the handset is off or on the hook respectively Selector 2 Ringer OFF setting This selector determines whether or not the ringer can be set to OFF Selector 4 Detection of distinctive ringing pattern If t...

Page 174: ... 0 dB 1 0 1 1 dB 1 1 0 2 dB 1 1 1 3 dB 4 6 Transmission level of DTMF low band frequency signal No 4 5 6 0 0 0 0 dB 0 0 1 1 dB 0 1 0 2 dB 0 1 1 3 dB 1 0 0 0 dB 1 0 1 1 dB 1 1 0 2 dB 1 1 1 3 dB 7 8 Not used Selectors 1 through 6 Transmission level of DTMF high low band frequency signal These selectors are intended for the manufacturer who tests the equipment for the Standard Never access them ...

Page 175: ...ll as displaying a message on the LCD prompting the output of the activity report WSW30 Function setting 8 Selector No Function Setting and Specifications 1 3 Not used 4 Duty cycle control of pulsed current for the heat fixing unit 0 OFF 1 ON 5 8 Not used NOTE Selector 4 is applicable to the European version only Selector 4 Duty cycle control of pulsed current for the heat fixing unit Setting this...

Page 176: ...urrent recording paper If it is set to 0 the equipment records one page data at full size 100 without reduction if it is set to 1 the equipment records it at the size specified according to the current paper size Selector 5 Minimum short OFF duration in distinctive ringing The ringer pattern consists of short and long rings e g short short long rings This selector sets the minimum OFF duration fol...

Page 177: ...hese selectors set the default resolution which applies when the equipment is powered up or completes a transaction Selectors 7 and 8 Default contrast These selectors set the default contrast which applies when the equipment is powered up or completes a transaction WSW33 Function setting 11 Selector No Function Setting and Specifications 1 5 Not used 6 Report output of polled transmission requests...

Page 178: ... connected via the facsimile equipment in the F T mode or via the external telephone in the external TAD mode Selectors 6 and 7 Number of DTMF tone signals for inhibiting the detection of CNG during external TAD operation If the equipment receives this specified number of DTMF tone signals during external TAD operation then it will not detect CNG afterwards If these selectors are set to 1 1 the CN...

Page 179: ... power off recognition time This selector sets the time length from when the equipment detects the PC powered off until it recognizes the detected state as power off If selector 2 is set to 0 it is recommended that selector 3 be set to 1 otherwise the equipment may mistakenly detect PC powered off Selector 5 Escape from phase C This selector determines whether or not the equipment will escape from...

Page 180: ...t 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 Selector 2 Erasure of the stored image data of an unsent document at the time of the subsequent in memory message transmission If in memory message transmission fails repeatedly when selector 1 is set to 1 the temporary memory wi...

Page 181: ...zer s training level to be applied if the facsimile equipment fails to send training due to weak line connection If these selectors are set to 0 X the modem will automatically set the appropriate training level Selector 3 Sending level of guard tone at phase 2 This selector sets the sending level of guard tone for 1800 Hz to be sent at Phase 2 in the V 34 mode Selector 4 Stepping down the transmis...

Page 182: ... transmission speed for fallback These selectors are used to set the modem speed range With the first transmission speed choice specified by selectors 1 through 4 the equipment attempts to establish the transmission link via the modem If the establishment fails the equipment automatically steps down to the next highest speed and attempts to establish the transmission link again The equipment repea...

Page 183: ...rough 4 of WSW39 for example then the allowable maximum transmission speed will be limited to 31200 bps If selector 8 is set to 1 to mask the 2400 symbols second when the first transmission speed choice is 33600 bps then the allowable maximum transmission speed remains 33600 bps If selector 8 is set to 1 to mask the 2400 symbols second when the first transmission speed choice is 21600 bps specifie...

Page 184: ... only to models equipped with a flat bed scanner NOTE Selectors 5 through 8 take effect only in V 34 mode 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 and stay on for the time length specified by these selectors If these selectors are set to 1 1 1 the fluorescent lamp...

Page 185: ...lectors 1 through 3 are applicable to those models equipped with LAN interface Selector 3 Internet FAX forward function If this selector is set to ON the machine may forward a FAX message received through Internet to other remote G3 facsimile equipment WSW43 Function setting 19 Selector No Function Setting and Specifications 1 Not used 2 3 Wait time for PCFax reception Class 2 and FPTS command tra...

Page 186: ...equipped with a flat bed scanner Selectors 6 through 8 Effective time length of the white level compensation data obtained beforehand If you set documents in the ADF and the document front sensor detects them or if you open the document tray ASSY and the document tray open sensor detects the open state then the controller will make correction of the reference voltage to be applied to white level c...

Page 187: ...l the ADF starts drawing them in These selectors determine how long the ADF will delay automatic drawing in of documents to the scanning standby position after you set them in the ADF as well as determining whether or not the ADF automatically draws in documents Selectors 4 through 6 Periodical correction intervals of the reference voltage applied to white level compensation for document scanning ...

Page 188: ...ed NOTE Selector 3 is applicable only to models equipped with a parallel interface Selectors 1 and 2 Monitoring the PC ON OFF state For the related functions refer to WSW36 selectors 2 and 3 Selector 3 Parallel port output pins kept at high level Setting this selector to 0 will keep all parallel output pins of the facsimile equipment at high level Use this setting if Resource Manager bundled with ...

Page 189: ...FAX3800 MFC4800 FAX8070P MFC9030 MFC9070 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 ...

Page 190: ...A Main PCB 1 5 ...

Page 191: ...A Main PCB 2 5 ...

Page 192: ...A Main PCB 3 5 ...

Page 193: ...A Main PCB 4 5 ...

Page 194: ...A Main PCB 5 5 ...

Page 195: ...B NCU PCB U S A Canada ...

Page 196: ...B NCU PCB U K Norway Netherlands Finland Denmark Sweden ...

Page 197: ...B NCU PCB Germany France Belgium Switzerland Ireland Austria Spain Italy South Africa ...

Page 198: ...B NCU PCB Asia Oceania 1 2 ...

Page 199: ...C10 CERAMIC 50C563B Not Assy C11 Not Assy CERAMIC 50C103B C12 CERAMIC 50C562B Not Assy C13 RESISTOR 0 CERAMIC 16C224B CN3 MODULAR 4 4P MODULAR 4 4P CN5 B6B PH B6B PH CN4 B12B PH B12B PH Q2 2SC5395 2SC5395 R7 1 16W 680 1 16W 680 R8 R30 1 16W 1 270K 1 16W 1 100K R14 1 16W 1 1 6K 1 16W 1 1K R32 R36 1 16W 1K 1 16W 1K R34 R35 1 16W 1 13K 1 16W 1 20K R37 1 16W 150 1 16W 150 C8 ALUM ELEC 16B100 ALUM ELEC...

Page 200: ...C Control Panel PCB ...

Page 201: ...D Power Supply PCB 100 120V Low voltage power supply ...

Page 202: ...D Power Supply PCB 200 240V Low voltage power supply Europe ...

Page 203: ...D Power Supply PCB 200 240V Low voltage power supply Asia Oceania ...

Page 204: ...D Power Supply PCB High voltage power supply ...

Page 205: ...April 02 SM FAX002 8X5601 Printed in Japan ...

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Brother Laser MFC-4800, Service Manual

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Summary of Contents for Laser MFC-4800

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