Brother FAX1570MC Service Manual

FACSIMILE EQUIPMENTSERVICE MANUALMODEL: FAX1170/1270/1570MCFAX1010/1020/1030MFC1770/1870MC/1970MC

CHAPTER II.INSTALLATION

V – 53.2 Printout of Scanning Compensation Data FunctionThe equipment prints out the white and black level data for scanning compensation. Operating

V – 6Scanning Compensation Data List (MFC1970MC)Scanning Compensation Data List (Other models)

V – 73.3 ADF Performance Test FunctionThe equipment counts the documents fed by the automatic document feeder (ADF) and dis-plays the count on the LC

V – 83.4 Test Pattern 1 FunctionThis function, much like the copying function, prints out test pattern 1 to allow the servicepersonnel to check for r

V – 93.5 Firmware Switch Setting and Printout[ A ]Firmware switch setting FunctionThe facsimile equipment incorporates the following firmware switch

V – 10 Operating Procedure(1) Press the 1 and 0 keys in this order in the initial maintenance mode.The equipment displays the "WSW00" o

V – 11 Detailed Description for the Firmware SwitchesWSW01 (Dial pulse setting)FunctionSelectorNo.Setting and Specifications8123456Dial pulse generat

V – 12● Selector 7: Switching between pulse (DP) and tone (PB) dialing, by the function switchThis selector determines whether or not the dialing mode

V – 13* PABX: Private automatic branch exchangeNOTE: Selectors 2 through 4 and 6 through 8 are not applicable where no PABX is installed.● Selectors

V – 14● Selectors 6 and 7: Dial tone detection in PABXThese selectors activate or deactivate the dial tone detection function which detects a dialtone

CHAPTER III.THEORY OF OPERATION

V – 15WSW04 (TRANSFER facility setting)FunctionSelectorNo.Setting and Specifications1 Earth function in transfer facility 0: Provided 1: Not provide

V – 16WSW05 (1st dial tone and busy tone detection)FunctionSelectorNo.Setting and SpecificationsMax. pause time allowable forremote ID code detectionB

V – 17● Selectors 5 and 6: Busy tone detection in automatic sending modeThese selectors determine whether or not the equipment automatically disconnec

V – 18WSW06 (PAUSE key setting and 2nd dial tone detection)FunctionSelectorNo.Setting and SpecificationsPAUSE key setting and 2nd dialtone detection2n

V – 19● Selectors 4 through 6: Detection of international toneUpon detection of the 2nd dial tone for the time length specified by these selectors, th

V – 20WSW07 (Dial tone setting 1)FunctionSelectorNo.Setting and SpecificationsNo. 4 5 60 0 0 : -21 dBm0 0 1 : -24 dBm0 1 0 : -27 dBm0 1 1 : -30 dBm1 0

V – 21WSW08 (Dial tone setting 2)FunctionSelectorNo.Setting and Specifications1|31st dial tone detection timelengthNo. 1 2 30 0 0 : 50 ms0 0 1 : 210 m

V – 22WSW09 (Protocol definition 1)FunctionSelectorNo.Setting and Specifications10: 256 octets 1: 64 octetsUse of non-standard commandsFrame length se

V – 23WSW10 (Protocol definition 2)FunctionSelectorNo.Setting and SpecificationsSwitching of DPS, following theCML ON/OFF1Time length from transmissio

V – 24WSW11 (Busy tone setting)FunctionSelectorNo.Setting and Specifications12Frequency band rangeNo. 1 20 0 : Narrows by 10 Hz0 1 : Initial value1 x

CONTENTS1. OVERVIEW...III-11.1Functional Block Diagr

V – 25WSW12 (Signal detection condition setting)SelectorNo.FunctionSetting and Specifications78DelayNot used.56No. 5 60 0 : 800 ms (1000 ms*)0 1 : 200

V – 26WSW13 (Modem setting)FunctionSelectorNo.Setting and Specifications5|8Modem attenuator34Reception level12Cable equalizerNo. 1 200 : 0 km0 1 : 1.8

V – 27WSW14 (AUTO ANS facility setting)FunctionSelectorNo.Setting and Specifications12No. of rings in AUTO ANSmodeNo.56780 0 0 0 : Fixed to once0 0 0

V – 28WSW15 (REDIAL facility setting)FunctionSelectorNo.Setting and Specifications12Selection of redial intervalNo. 1 20 0 : 5 minutes0 1 : 1 minute1

V – 29WSW16 (Function setting 1)FunctionSelectorNo.Setting and Specifications2CCITT superfine recommendation3 Remote reception1Not used.45Not used.6Ex

V – 30WSW17 (Function setting 2)FunctionSelectorNo.Setting and Specifications12Off-hook alarmNo. 1 20 0 : No alarm0 1 : Always valid1 X : Valid except

V – 31WSW18 (Function setting 3)FunctionSelectorNo.Setting and Specifications1CCD manufacturer settingFixed to 1.No. 2 30 0 : 40 sec.0 1 : 0 sec. (No

V – 32WSW19 (Transmission speed setting)FunctionSelectorNo.No. 1 2 3No. 4 5 60 0 0 : 2,400 bps0 0 1 : 4,800 bps0 1 0 : 7,200 bps0 1 1 : 9,600 bps1 0 0

V – 33WSW20 (Overseas communications mode setting)FunctionSelectorNo.Overseas communications mode(Transmission)Setting and Specifications1EP* tone pre

V – 34WSW21 (TAD setting 1)SelectorNo.Setting and SpecificationsFunction1|5Max. waiting time for voice signalNo. 6 70 0 : For U.S.A. (A)0 1 : Except f

III – 11. OVERVIEW1.1 Functional Block DiagramLCDControl PanelMain frameRibbon sensorRecorderRecording headRibbon cartridgeMotorScannerTo PCCIS unitMo

V – 35WSW23 (Communications setting)SelectorNo.Setting and Specifications1Starting point of training check(TCF)0: From the head of a series of zeros1

V – 36FunctionSelectorNo.Setting and Specifications34WSW24 (TAD setting 2)12Maximum OGM recording timeNo. 1 20 0 : 15 sec.0 1 : 20 sec.1 0 : 30 sec.1

V – 37SelectorNo.Setting and SpecificationsWSW25 (TAD setting 3)Function1|4Not used.5|780: YES 1: NOAutomatic shift to facsimilemessage receive mode i

V – 38SelectorNo.WSW26 (Function setting 4)Function Setting and Specifications1Application of DC wetting pulse0: OFF 1: ON0: ON 1: OFF2Overvoltage lim

V – 39FunctionSelectorNo.Setting and SpecificationsWSW27 (Function setting 5)Detection of distinctive ringingpattern1Not used.2 Ringer OFF setting 0:

V – 40WSW28 (Function setting 6)FunctionSelectorNo.Setting and SpecificationsTransmission level of DTMFhigh-band frequency signalNo. 1 2 3000: 0 dB0 0

V – 41Function Setting and SpecificationsNo. 1 2 30 0 0 : -47.0 dBm (A)0 0 1 : -48.5 dBm (B)0 1 0 : -50.0 dBm (C)0 1 1 : -51.5 dBm (D)1 0 0 : -53.0 dB

V – 42FunctionSelectorNo.Setting and SpecificationsNo. 1 2 30 0 0 : -38.0 dBm (A)0 0 1 : -39.5 dBm (B)0 1 0 : -41.0 dBm (C)0 1 1 : -42.5 dBm (D)1 0 0

V – 43WSW31 (Function setting 9)FunctionSelectorNo.Setting and SpecificationsNot used.125Default reduction rate for failureof automatic reduction duri

V – 44WSW32 (Function setting 10)FunctionSelectorNo.Setting and Specifications56No. 5 60 0 : Standard0 1 : Fine1 0 : Super fine1 1 : Photo1|4Default r

III – 22. MECHANISMSThe equipment is classified into the following mechanisms: Transmitting Mechanism Feeding and scanning documents Receiving Mecha

V – 45FunctionSelectorNo.Setting and Specifications1|3No. 1 2 30 0 0 : -42.5 dBm (A)0 0 1 : -44.0 dBm (B)0 1 0 : -45.5 dBm (C)0 1 1 : -47.0 dBm (D)1 0

V – 46CNG detection when theexternal telephone is connectedwith a line in TAD modeWSW34 (Function setting 12)FunctionSelectorNo.Setting and Specificat

V – 47[ B ] Printout of firmware switch data FunctionThe equipment prints out the setting items and contents specified by the firmware switches. Ope

V – 483.6 Operational Check of Control Panel PCB FunctionThis function checks the control panel PCB for normal operation. Operating Procedure(1) Pre

V – 49MFC177012345 6 71011 12 1314 15 161718 198 920 2122 23 24 2526 27 28 29303132 33 3435 36 37 38 39 40FAX1570MC/1030/MFC1870MC/1970MCKey & But

V – 503.7 Sensor Operational Check FunctionThis function allows you to check that the seven sensors (document front sensor, documentrear sensor, cove

V – 51(2) Change the detecting conditions and check that the indication on the LCD changes asfollows:- Insert a document through the document front se

V – 523.10 Document Draw AdjustmentAfter replacement of the main PCB or CIS, or if data stored in the E2PROM is damaged, you need tocarry out this pro

CHAPTER VI.ERROR INDICATION ANDTROUBLESHOOTING

CONTENTS1. ERROR INDICATION... VI-11.1Equipment Errors...

III – 32.1.2 ScannerThe scanner uses a contact image sensor (CIS) unit which consists of an LED array illumi-nating documents, a self-focus lens array

VI – 11. ERROR INDICATIONTo help the user or the service personnel promptly locate the cause of a problem (if any), thefacsimile equipment incorporate

VI – 2Messages on the LCD Probable CauseDOCUMENT JAM Document loading error(1) The document rear sensor detects no leading edge of adocument within

VI – 382 Recording paper feeding error.87 Fails to complete the sequence of recording operation.8A Wrong or weak contact of the recording head connect

VI – 4 82xx Although recording paper has been fed by 150 mm after the start ofrecording, the paper-edge sensor is still OFF. 8303 Although recording

VI – 51.2 Communications ErrorsIf a communications error occurs, the facsimile equipment 1 emits an audible alarm (intermittent beeping) for approxima

VI – 6 Definition of Error Codes on the Communications List(1) Calling10 08 Wrong number called.11 01 No dial tone detected before start of dialing.1

VI – 7(3) Compatibility [checking the NSF and DIS]Code 1 Code 2 Causes32 01 Remote terminal only with V.29 capability in 2400 or 4800bps transmission.

VI – 850 01 Vertical resolution capability changed after compensationof background color.40 02 Illegal coding system requested.40 03 Illegal recording

VI – 963 01 Password plus "lower 4 digits of telephone number" notcoincident.63 02 Password not coincident.63 03 Polling ID not coincident.6

VI – 10Code 1 Code 2 Causes(9) Signal isolation90 01 Unable to detect video signals and commands within 6seconds after CFR is transmitted.90 02 Receiv

III – 42.2 Receiving Mechanism (Feeding paper and printing data)The receiving mechanism consists of the recording paper cover ASSY, paper feed rollerA

VI – 11(12) Maintenance modeCode 1 Code 2 CausesE0 01 Failed to detect 1300 Hz signal in burn-in operation.E0 02 Failed to detect PB signals in burn-i

VI – 122. TROUBLESHOOTING2.1 IntroductionThis section gives the service personnel some of the troubleshooting procedures to be fol-lowed if an error o

VI – 132.4 Troubleshooting Procedures[ 1 ] Control panel relatedTrouble Check:(1) LCD shows nothing.• Main-panel harness between the main PCB and thec

VI – 14Trouble Check:(5) Telephone does not ring.• Speaker• NCU PCB• Main PCB[ 3 ] Communications related(1) No tone is transmitted.Trouble Check:• Ma

VI – 15• Compression springs beneath the recording headAt the recorder[ 5 ] Print-image relatedIf the received or sent image has any problem, first ma

VI – 16Trouble Check:(6) Faulty image registrationAt the scanner• CIS harness• CIS unit• Main PCBAt the recorder • Main-head harness and head-power ha

FAX1170/1270/1570MCFAX1010/1020/1030MFC1770/1870MC/1970MCAPPENDICESCircuit DiagramsA. Main PCBB. Network Control Unit (NCU) PCBC. Control Panel PCBD.

PI O1SEON( OD)SPSL( SMC)CITLOFHOOKSTDCMLDPSPLSLNCR( COMP)TELRSTSOL ( OD)SEN2SEN3SEN4SEN5SEN6SEN7SEN8EXTLXTLIORDIOWEPI O2EI T1AVDDCP1 ICP3 ICP4 ICPNNRD

A9A8A7A6A5A4A3A2A1A0NCVCCDQ5DQ7DQ8DQ6-RAS-CAS-WE-OE14E DBAS15A RAS15A CAS15A RMWE15A RMRD14D DABUSDA9DA8DA7DA6DA5DA4DA3DA2DA1DA0D4D5D6D714823722101112

+25V+5VRB 12 ELATC 15CHRLY 36ECP3I 12FHDC 1 2 DGND+5VCI SP12B7B- PH12943ST1 12DRI BON 1 2 DTM1410P7B11B- PHR1 633KFR1 5100KFR1810KTG 12E+5VGNDR5 V7 VI

III – 52.3 Power Transmission MechanismThe equipment has a single drive motor whose power transmission route can be switched bythe planetary gear syst

-+C10CNT-+GND12D SPON15C RNGOC10CNTMOVTELRLSLTELSL+5VM0 V74HC4053#1+25VM0 VKI A324F#467816 411NCUDAREC 1 1 CRNGL 1 5 C12SPP11B2B- PHWH I T EP3#4KI A32

FAX1170FAX1270MFC1770NO.PAGES. ASSY 01FAX1010FAX1020S. ASSY 41R3 6FAX1170- FSFAX1270- FSMFC1770- FSS. ASSY 02R3 512C5BACK UP4MROM2MROMC5 . 5 B4 7 3 C5

PI O1SEON( OD)SPSL( SMC)CITLOFHOOKSTDCMLDPSPLSLNCR( COMP)TELRSTSOL ( OD)SEN2SEN3SEN4SEN5SEN6SEN7SEN8EXTLXTLIORDIOWEPI O2EI T1AVDDCP1 ICP3 ICP4 ICPNNRD

14E DBAS15A RAS15A CAS15B BARMWE15B BARMRD14D DABUSGND+5V8674123VCC VSSSCLSDATEST A2A1A0#424LC16( 1870MC)24LC32( 1970MC)15D EPCK15D EPDOC95CC10 416D A

+25V+5VRB 12 ELATC 15CHRLY 36ECP3I 12FHDC 1 2 DGND+5VCI SP9B7B- PH12943ST1 12DRI BON 1 2 DTM1410P5B11B- PHR1 0 733KFR1 0 8100KFR10510KTG 12E+5VGNDR5 V

-+C01CNT4053-+GND12D SPONC10CNT4053MOVSL+5VM0 V4053#17+25vM0 VKI 324#1867816 411NCUDAREC 1 1 CRNGL 1 5 C12SPP4B2B- PHWH I T EP10I MSA- 9110S- 18L#18KI

+5V+5VM0 V4053#11+5VM0 VBA10358F#1467816 84#14BA10358FR4310KC32CC10 4R57 100KTXOUTRXI NBVBI AS3162HREFC1 016V10R5 3 *C5 2CC1 0 4R5 4100KC3 3CC681B15RX

5REF4S0VRA351X2+26VP16033B- 12ZS0V+5V84S0V631421REF4343S0V+26VCMLCR1MZF- 24HGorOUAZ- SS- 124DFG25+5VS0VSREF42534312PLSS0V+-2143S0VRL 22143TELOFFMTZJ2.

5REF4S0VRA351X2+26VP16033B- 12ZS0V+5V84S0V631421REF4343S0V+26VCMLCR1MZF- 24HGorOUAZ- SS- 124DFG25+5VS0VSREF42534312PLSS0V+-2143S0VRL 22143TELOFFREF45C

BNCU(SWITZERLAND/AUSTRALIA)LI NESEMBC-124A- OUT731364RDPSDASND-+RL 2PLS364+26V+5VS0V56TELOFF11REFPOLFG4312+MBCMBCCBMEREF-+S0VA- OUTR2 710KCMLS0VDASTTE

III – 62.3.2 Description of planetary gear systemThe equipment uses the following three planetary gear systems:- Sun gear 20/90 ("B" in the

TADBI NATONELI NESEMBC-124A- OUT731364RDPSDASND-+RL 2PLS364+26V+5VS0V1243S0V56TELOFF11REFPOLCH2FG4312+MBCMBCCBMES0VREF-+S0VA- OUTR2 710KCMLS0VDASTTELO

TADBI NATONELI NESEMBC-124A- OUT731364RDPSDASND-+RL 2PLS364+26V+5VS0V1243S0V56TELOFF11REFPOLFG4312+MBCMBCCBMES0VREF-+S0VA- OUTR2 710KCMLS0VDASTTELOFF1

LI NESEMBC-124A- OUT731364RDPSDASND-+RL 2PLS364+26V+5VS0V56TELOFF11REFPOLCH2FG4312+MBCMBCCBMEREF-+S0VA- OUTR2 710KCMLS0VDASTTELOFF1ADLCCMLS0VREFSP7+5V

TADBI NATONELI NESEMBC-124A- OUT731364RDPSDASND-+RL 2PLS364+26V+5VS0V56TELOFF11REFPOLCH2FG4312+MBCMBCCBMEREF-+S0VA- OUTR2 710KCMLS0VDASTTELOFF1ADLCCML

TADBI NATONELI NESEMBC-124A- OUT7356TELOFF1CH24312+MBCMBCCBMECMLE-++-RDPS+5VS0V1243PLSJP25( 10)JP26(5)JP20(5)JP11( 10)JP8(5)JP19( 20)JP30(C)JP22( 10)J

TADBI NATONELI NESEMBC-124A- OUT731364RDPSDASND-+RL 2PLS364+26V+5VS0V1243S0V56TELOFF11REFPOLCH2FG4312+MBCMBCCBMES0VREF-+S0VA- OUTR2 710KCMLS0VDASTTELO

5REF4S0VRA501X2+26VP16033B- 12ZS0V+5V84S0V631421REF4343S0V+26VCMLCR1MZF- 24HGorOUAZ- SS- 124DFG25+5VS0VSREF42534312PLSS0V+-2143S0VRL 22143TELOFFMTZJ2.

142108137311212GNDRST16BU12102- PNL24KI 53KI 42KI 31KI 232KI 1N. CKO6KO3KO2KO1KO0P3S5BPH+5VRA1473x61145432KO6KO4KO3KO2KO1KO0P252089- 141019L CD2L CD6L

KI 0P1- 13PKI 1KI 2KI 3KI 4KO0 KO1 KO2 KO3 KO4 KO5 KO6P1- 7PP1- 3PP1- 1PP1- 12PP1- 6P P1- 4P P1- 2P P1- 10P P1- 5P P1- 9P P1- 11P30626341113 41781618

142105137311225PI N0RST26MPD75004- 71011KI 78KI 47KI 36KI 25KI 1KO6KO4KO3KO2KO1KO0P3S5BPH+5V1145432KO4KO3KO2KO1KO0P252089- 141033L CD2L CD6L CD5L CD4L

III – 72.3.3 Power transmission for four operation modesDepending upon the solenoid ON/OFF state and the motor rotation direction, the planetarygear t

KI 0P1- 13PKI 1KI 2KI 3KI 4KI 6KO0 KO1 KO2 KO3 KO4 KO5 KO6P1- 7PP1- 3PP1- 1PP1- 12PP1- 14PP1- 6P P1- 4P P1- 2P P1- 10P P1- 5P P1- 9P P1- 11P3062634111

DPower Supply (100-120V)U.S.A., CANADA, TAIWAN

DPower Supply (200-240V)EUROPE, SOUTH AMERICA

DPower Supply (200-240V)GULF, ASIA, CHINA

FACSIMILE EQUIPMENTPARTS REFERENCE LISTMODEL: FAX1270 / 1570MC / MFC1970MC (For South America / China / Asia / Gulf / Indonesia / India / Taiwan /

© Copyright Brother 1997All rights reservedNo part of this publication may be reproduced in any formor by any means without permission in writing from

NOTES FOR USING THIS PARTS REFERENCE LIST1. In the case of ordering parts, it needs mentioning the following items:(1) Code(2) Q' ty(3) Descripti

* The parts are newly established to comply with CCIB Standard. <Refer to TI No. FAX98500-FAX98502>REF.NO. CODE Q'TY DESCRIPTION REMARKS1 P

* The parts are newly established to comply with CCIB Standard. <Refer to TI No. FAX98500-FAX98502>REF.NO. CODE Q'TY DESCRIPTION REMARKS

© Copyright Brother 1997All rights reserved.No part of this publication may be reproduced in anyform or by any means without permission in writingfrom

III – 8[ 1 ] Scanning mode (Solenoid: OFF, Motor rotation: Reverse)In the scanning mode, the control electronics deactivates the solenoid. When the

* The parts are newly established to comply with CCIB Standard. <Refer to TI No. FAX98500-FAX98502>REF.NO. CODE Q'TY DESCRIPTION REMARKS24-

* The parts are newly established to comply with CCIB Standard. <Refer to TI No. FAX98500-FAX98502>REF.NO. CODE Q'TY DESCRIPTION REMARKS*31

* The parts are newly established to comply with CCIB Standard. <Refer to TI No. FAX98500-FAX98502>REF.NO. CODE Q'TY DESCRIPTION REMARKS(54

1. PLATEN FRAME & MAIN FRAME ATTACHMENTREF.NO. CODE Q'TY DESCRIPTION REMARKS1 UF8116001 1 PAPER FEED ROLLER ASSY2 UF0026001 1 PAWLED BEARING3

1. PLATEN FRAME & MAIN FRAME ATTACHMENTREF.NO. CODE Q'TY DESCRIPTION REMARKS51 UF8035001 1 SEPARATION ROLLER GEAR52 UF5511001 1 SEPARATION RO

Urgent & ImportantIssue For OEMTechnical Information No. FAX98196Issue Date Approval datedAug/11/1998Model:For: Ser

Urgent & ImportantIssue For OEMTechnical Information No. FAX98822Issue Date Approval datedFeb/4/1999Model:For: Seri

Urgent & ImportantIssue For OEMTechnical Information No. FAX98627Issue Date Approval datedDec/7/1998Model:For: Seri

III – 9[ 2 ] Paper feeding/ejecting mode (Solenoid: ON, Motor rotation: Reverse)In the paper feeding/ejecting mode, the control electronics activates

Urgent & ImportantIssue For OEMTechnical Information No. FAX98157Issue Date Approval datedJune/16/1998Model:For: Se

Urgent & ImportantIssue For OEMTechnical Information No. FAX98053Issue Date Approval datedFeb/10/1998Model:For: Ser

Urgent & ImportantIssue For OEMTechnical Information No. FAX97067Issue Date Approval datedJan/12/1998Model:For: Ser

,Model:FAX1170, FAX1270, FAX1570MC, MFC1770, MFC1870MC, MFC1970MC, FAX1010, FAX1020, FAX1030Part Code Change Yes No Parts List Change Yes NoService

Model:FAX1170, FAX1270, FAX1570MC, MFC1770, MFC1870MC, MFC1970MC, FAX1010, FAX1020, FAX1030Part Code Change Yes No Parts List Change Yes NoService M

Remarks:Model: FAX1570MC(Except for Hong Kong)Part Code Change Yes No Parts List Change Yes NoService Manual Change Yes NoUF8155002 1 PAPER REAR C

Urgent & ImportantIssue For OEMTechnical Information No. FAX98133Issue Date Approval datedMar/17/1998Model:For: Ser

Urgent & ImportantIssue For OEMTechnical Information No. FAX97204Issue Date Approval datedJan/23/1998Model:For: Ser

III – 10[ 3 ] Recording mode (Solenoid: OFF, Motor rotation: Forward)In the recording mode, the control electronics deactivates the solenoid. When t

III – 11Active Gears on the Right SidecdPlaten frameb (Gear 33RB)Main framef (Ribbon take-up gearin the ribbon cartridge)(Front)eRibbondrive gear(Gear

III – 12[ 4 ] Copying mode (Solenoid: ON, Motor rotation: Forward)The control electronics activates the solenoid to release the stopper of arm A from

III – 13Active Gears on the Right SidecdPlaten frameb (Gear 33RB)Main framef (Ribbon take-up gearin the ribbon cartridge)(Front)Friction torquetransmi

III – 142.3.4 Power transmission routeRotation of the motor gear is transmitted as shown below.bcdefGears on the Right SideA: Motor gearB: Sun gear 20

III – 15[ 3 ] Recording Mode (Solenoid: OFF, Motor rotation: forward)A ➜ BC ➜ M ➜ NY ➜ Z ➜ a (Platen) ➜ b ➜ c ➜ d ➜ e ➜ f (Ribbon take-up gear)L (Idl

III – 162.4 Sensors and ActuatorsThis equipment has four photosensors and three mechanical switches (two for the FAX1010)as described below. Senso

III – 17Document rear sensor actuatorDocument rear sensorMain PCBPaper-edge sensor actuatorPaper-edge sensorPaper ejection sensorPaper ejection sensor

PREFACEThis publication is a Service Manual covering the specifications, construction, theory of opera-tion, and maintenance of the Brother facsimile

III – 18Cover sensor actuatorModular PCBCover sensor leverCover sensorLocation of Sensors and Actuators (2)Handset mount** Not provided on the FAX1010

III – 193. CONTROL ELECTRONICS3.1 ConfigurationThe hardware configuration of the facsimile equipment is shown below.LineExternaltelephone(Note)P28-pin

III – 203.2 Main PCBThe main PCB, which is the nucleus controlling the entire operation of the equipment, con-sists of a FAX engine (ASIC), memories,

III – 21PI O1SEON( OD)SPSL( SMC)CITLOFHOOKSTDCMLDPSPLSLNCR( COMP)TELRSTSOL ( OD)SEN2SEN3SEN4SEN5SEN6SEN7SEN8EXTLXTLIORDIOWEPI O2EI T1AVDDCP1 ICP3 ICP4

III – 22Main PCB Circuit Diagram 2/51 Connector for the power supply PCB which supplies 25V and 8V.2 3-terminal regulator which eliminates unstabilize

III – 23Main PCB Circuit Diagram 3/51 Connector for the CIS1-1: Power for the CIS LED array1-2: Clock output1-3: Trigger signal output. One shot of t

III – 24Main PCB Circuit Diagram 4/51 Connector for the NCU2 Analog signal selectors2-1: Selects either input signals from the handset or those from t

III – 259 Connector for the speaker: Speaker volume control circuit:-1: VOL1 OFF ON ON:-2: VOL2 OFF OFF ON:-3: VOL3 OFF OFF ONSpeaker volume High M

III – 26Main PCB Circuit Diagram 5/51 Connector for the microphone2 Voice signal amplifier circuitThese are provided on the FAX1570MC/3 Analog portion

III – 273.3 NCU PCBThe NCU PCB switches the communications line to telephone or built-in MODEM, under thecontrol of the main PCB.5REF4S0VRA351X2+26VP1

CHAPTER I.GENERAL DESCRIPTION

III – 28TADBI NAT ONELI NESEMBC-124A- OUT731364RDPSDASND-+RL 2PLS364+26V+5VS0V56TELOFF11REFPOLCH2FG4312+MBCMBCCBMEREF-+S0VA- OUTR2 710KCMLS0VDASTTELOF

III – 293.4 Control Panel PCBThe control panel PCB and the main PCB communicate with each other by serially transmit-ting commands and data.The contro

III – 303.5 Power Supply PCBThe power supply uses the switching regulation system to generate DC power (+25V and+8V) from a commercial AC power supply

CHAPTER IV.DISASSEMBLY/REASSEMBLYAND LUBRICATION

CONTENTS1. DISASSEMBLY/REASSEMBLY... IV-1 Safety Precautions...

IV – 11. DISASSEMBLY/REASSEMBLY Safety PrecautionsTo prevent the creation of secondary problems by mishandling, observe the following pre-cautions d

IV – 2Tightening Torque List Location Screw type Q'ty Tightening torque (kgf•cm) Recording head ASSY Screw, cup S 3x6 2 7 ±2 Recording paper c

IV – 3 PreparationPrior to proceeding to the disassembly procedure,(1) Unplug- the modular jack of the telephone line,- the modular jack of the curl

IV – 4 Disassembly Order FlowControl panelASSYROM cover1023Platen54Chute ASSY6Platen framePaper feed chute7767- Sensor PCB- Paper-edge sensoractuato

IV – 51.1 Recording Head ASSY(1) Push the open button and fully open the recording paper cover ASSY.Open buttonRecording papercover ASSY(2) As shown b

CONTENTS1. EQUIPMENT OUTLINE... I-11.1External Appearance and Weight...

IV – 6(3) Remove the two screws from the recording head ASSY.(4) Disconnect the relay connector of the head-power harness.NOTE: To disconnect the rel

IV – 7(7) To disassemble the recording head ASSY, follow the steps below.1) Remove the head protection plate by unhooking the two latches.2) Turn the

IV – 81.2 Recording Paper Cover ASSY(1) Pull the paper front cover towards you.(2) To remove the A4 paper guides, insert the tip of a flat screwdriver

IV – 91.3 Platen(1) At the left end of the platen, remove the platen gear (Gear 23) by pulling its pawl out-wards and then remove the bushing.(2) At t

IV – 101.4 Lock Levers and Their Shaft(1) At each end of the lock lever shaft, release the lock spring from the lock lever and theplaten frame.(2) Tur

IV – 111.5 Chute ASSY(1) Remove the two screws.(2) Move the chute ASSY to the left to release tab "a" from the platen frame, pull the chuteA

IV – 121.6 Paper Feed Roller ASSY and Paper Feed Sub Chute(1) Remove the front cover sensing actuator from the paper feed roller shaft by pulling upth

IV – 13(4) At the either end of the paper feed sub chute, release the latch from the paper feedchute with a flat screwdriver as illustrated below, and

IV – 14• When setting the paper feed roller ASSY at the left side of the platen frame, turn up theplanet gear 34 of the arm P ASSY so that the planet

IV – 151.7 Paper Feed Chute, Sensor PCB, and Paper-edge and Paper Ejection SensorActuators(1) Remove the two screws.(2) Remove the sensor PCB by relea

I – 11. EQUIPMENT OUTLINE1.1 External Appearance and WeightThe figure below shows the equipment appearance and approximate dimensions.12ABCHookHoldFun

IV – 16(6) Remove the paper-edge sensor actuator by pulling the support "x" outwards.(7) Remove the paper ejection sensor actuator by pushin

IV – 171.8 Paper Ejection Roller(1) At the left end of the paper ejection roller (when viewed from the rear), remove thebushing by pulling its pawls o

IV – 181.9 Gears on the Platen FramePlaten frameSun gear 39/24Planet gear 34 ofthe arm P ASSYPaper feed roller gearPaper ejection roller gear(Gear 40)

IV – 191.10 Control Panel ASSY(1) Remove the ROM cover, referring to Section 1.1, steps (1) and (2).(2) Disconnect the main-panel harness and the main

IV – 20P1P2P5P9P10P14P11P13P15P3P4P6P12P8P9P7P12P5P4P3P2P1P10P11(NCU connector)Main PCB(Front)Main-panelharness(ModularPCBconnector)Main-panelharness(

IV – 211.11 Panel Rear Cover and Control Panel(1) Place the control panel ASSY upside down.(2) Remove the ADF parts, the pressure rollers and anti-sta

IV – 22(8) To take out the LCD, remove the control panel PCB and the FPC key in step (6). Asshown below, insert the tip of a flat screwdriver under c

IV – 231.12 Inner Cover(1) Remove the four screws.(2) While lifting up the inner cover, release the five latches with the tip of a flat screwdriver.In

IV – 24P8P9P7P12P5P4P3P2P1P10P111.13 White Pressure Roller and CIS Unit(1) Swing the tabs of the bushings R and L towards you to the release position,

IV – 25(3) Tilt the CIS unit towards you to release the rear latches from the main frame, and theCIS unit comes off. Reassembling Notes• When reinsta

I – 22. SPECIFICATIONSFAX Retrieval No Yes YesPCI (Missing link) Ready Ready ReadyMessage Center No No YesCaller ID Yes Yes YesFax-/Voice-on-demand No

IV – 261.14 Handset Mount (for models except the FAX1010)Side Cover (for the FAX1010)(1) Disconnect the hook switch harness* from the main PCB.(2) Rem

IV – 271.15 Side Covers R and L(1) Lift up the front of the side cover R and take it out.(2) Disconnect the main-sensor harness from the main PCB, and

IV – 28(NCU connector)P8P9P7P12P5P4P3P2P1P10P11Main PCB(Front)(ModularPCBconnector)Main-sensorharnessFAX1170/1270/1010/1020/MFC1770P1P2P5P9P10P14P11P1

IV – 291.16 Speaker and Battery(1) Disconnect the speaker harness from the main PCB, and pull up the speaker.(2) For the FAX1570MC/1030/MFC1870MC/1970

IV – 301.17 Document Front Sensor Actuator(1) As shown below, push down the latch of the right end of the document front sensor ac-tuator to release i

IV – 311.18 Main Frame(1) Place the machine upright as shown below.(2) Remove two screws "a" from the bottom plate.Equipment placedupright&q

IV – 32FAX1570MC/1030/MFC1870MC/1970MCSolenoidharnessMotor harnessMain PCB(Front)Head-power harness (Relayconnector)(6) Remove four screws "b&quo

IV – 331.19 Separation Roller, its Support, and Document Rear Sensor Actuator(1) At the left side of the main frame, remove the spring and pull out th

IV – 34(5) To remove the document rear sensor actuator, push down the latch of its right end torelease it from the hole provided in the main frame, mo

IV – 351.20 Document Ejection Roller and CIS Leaf Spring(1) To remove the document ejection roller, pull out the gear 14/20 by pulling its pawl out-wa

I – 3FAX Retrieval Yes Yes YesPCI (Missing link) Ready Ready ReadyMessage Center No No YesCaller IDUK, Sw., Holland (Ready for France) UK, Sw., Hollan

IV – 361.21 Motor(1) To remove the motor, at the left side of the main frame, unhook the spring and then pullout the clutch lever by pulling its pawl

IV – 371.22 Solenoid(1) At the left side of the main frame, remove the spring and pull out the clutch lever bypulling its pawl outwards.(2) Remove the

IV – 381.23 Drive Gears(1) At the left side of the main frame, remove the clutch lever, gears, and arm ASSYs, bypulling their pawls outwards (if any).

IV – 39(4) At the inside of the right rear side of the main frame, remove the retaining ring E3 andthen take out the slip gear 40, friction pad, and b

IV – 401.25 Ribbon Bushings(1) Remove the ribbon bushings and the pawled ribbon bushings B.RibbonbushingPawled ribbonbushing BRibbonbushingMain frameP

IV – 411.27 Main PCB, NCU PCB and Modular PCB(1) Place the machine rightside up.(2) Disconnect the following harnesses from the main PCB:• Solenoid ha

IV – 42(3) Turn the machine upside down.(4) Unhook the modular PCB from the latches, slightly lift up front edge of the main PCB,and then take out the

IV – 43P8P9P7P12P5P4P3P2P1P10P111.28 Power Supply PCB(1) Place the machine rightside up.(2) Disconnect the power-main harness from the main PCB.(3) Di

IV – 44(4) Turn the machine upside down.(5) Remove the adhesive tape to release the power-main harness and the head-power har-ness.(6) Lift up the pow

IV – 451.29 Harness RoutingFAX1170/1270/1010/1020/MFC1770Main PCBMotor harnessSolenoidharnessHook switchharnessMain-panelharnessCISharnessSpeaker harn

I – 4FAX Retrieval Yes Yes YesPCI (Missing link) Included (MFL3) Included (MFL3) Included (MFL3)Message Center No Yes YesCaller ID Yes Yes YesFax-/Voi

IV – 462. LUBRICATIONApply the specified lubricants to the lubrication points as shown below.Molykote EM-30LFor points A, apply a rice-sized pinch of

IV – 47[ 3 ] Gears at the left side of the platen frame[ 4 ] Paper ejection rollerPlaten frameAAAAArm P ASSYClutch gear ASSYAClutch gear ASSYPaper eje

IV – 48[ 5 ] Gears at the left side of the main frameAAAAAArm B ASSYAAAMainframeAArm A ASSYArm C ASSYAA[ 6 ] Friction torque transmission ASSY at the

IV – 49[ 7 ] Separation roller and document ejection rollerADocument ejection rollerSeparation roller supportBAAAASeparation roller

CHAPTER V.MAINTENANCE MODE

CONTENTS1. ENTRY INTO THE MAINTENANCE MODE... V-12. LIST OF MAINTENANCE-MODE FUNCTIONS...

V – 11. ENTRY INTO THE MAINTENANCE MODETo make the facsimile equipment enter the maintenance mode, press the Function ,* , 2 , 8 , 6 , and 4 key

V – 2ADF* Performance TestTest Pattern 1Firmware Switch SettingPrintout of Firmware Switch Data2. LIST OF MAINTENANCE-MODE FUNCTIONSMaintenance-mode F

V – 3- - - - - - - - - - - - - - - - - - - - - - - - - - IMPORTANT - - - - - - - - - - - - - - - - - - - - - - - - - - - -Basically, the maintenan

V – 43 DETAILED DESCRIPTION OFMAINTENANCE-MODE FUNCTIONS3.1 E2PROM Parameter Initialization FunctionThe equipment initializes the parameters, user sw