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Brother International IntelliFax-4750 Service Manual - Page 284

List7cover, Fax4750/5750, Mfc8300/8600/8700, Taptite, Cup B M3x8, Mfc8600 For Arl/nz/asa/gul

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List7(COVER) REF.NO. 1 1 2 3 4 5 6 7 7 7-1 7-2 8 9 10 11 12 13 14 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 33 34 CODE LE1240001 LJ4122001 UL9122001 UL9125001 UL9126001 UL9127001 UL9128001 UU2074001 UU2102001 UU2094001 087310815 UL9140001 UG6219001 087320616 UU2044001 UU2045001 UU2002001 0A5401006 0A5401006 UU2003001 UL9142001 LJ4125001 LE1242001 UF6114008 UF6115008 UF4417000 UF4418001 UF5034001 LG2210001 UU2048001 UF8166008 LE1023001 UG5030001 UF8167008 087311016 LE1126001 085320816 087321015 087321015 UF9823001 Q'TY 1 1 4 4 1 1 1 1 1 1 1 1 1 3 1 1 1 2 3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 6 3 2 2 DESCRIPTION MAIN COVER ASSY, WHITE(1495), MFC8600/8700 FOR US/CAN MAIN COVER ASSY, WHITE(1495), MFC8600 FOR ARL/NZ/ASA/GUL, FAX4750/5750, MFC8300 PINCH ROLLER ASSY PINCH ROLLER SPRING OUTER CHUTE, WHITE(1495) CHUTE SPRING L CHUTE SPRING R FRONT COVER ASSY, WHITE(1495), MFC8600/8700 FOR US/CAN FRONT COVER ASSY, WHITE(1495), MFC8600 FOR ARL/NZ/ASA/GUL, FAX4750/5750, MFC8300 FRONT SUB COVER, WHITE(1495), MFC8600 FOR ARL/NZ/ASA/GUL, FAX4750/5750, MFC8300 TAPTITE, CUP B M3X8, MFC8600 FOR ARL/NZ/ASA/GUL, FAX4750/5750, MFC8300 PAPER SUB TRAY, WHITE(1495) VIDEO CAPTURE PCB ASSY, MFC8600/8700 FOR US/CAN TAPTITE, CUP S M3X6, MFC8600/8700 FOR US/CAN VC COVER, WHITE(1495), MFC8600/8700 FOR US/CAN SWITCH COVER REAR COVER, WHITE(1495) SCREW, PAN (S/P WASHER) M4X10, MFC8300 SCREW, PAN (S/P WASHER) M4X10, FAX4750/5750, MFC8600/8700 TOP COVER, WHITE(1495) EXIT ROLLER ASSY ANTI-STATIC BRUSH (LONG) ANTI-STATIC BRUSH (SHORT) DOCUMENT GUIDE, L, WHITE(1495) DOCUMENT GUIDE, R, WHITE(1495) GUIDE GEAR SPRING, COMPRESSION TAPTITE, B 3X6 SPEAKER UNIT HANDSET HOLDER ASSY, GRAY(1495), EXCEPT FOR FAX5750 FOR ARL LOWER HANDSET HOLDER, GRAY(1495) SIDE COVER, FAX5750 FOR ARL HOOK SWITCH PCB ASSY ACTUATOR HOOK, GRAY(1495) TAPTITE, CUP B M3X10 HOOK RUBBER, EXCEPT FOR FAX5750 FOR ARL TAPTITE, BIND S M3X8 TAPTITE, CUP S M3X10, MFC8600/8700 FOR US/CAN TAPTITE, CUP S M3X10, MFC8600 FOR ARL/NZ/ASA/GUL, FAX4750/5750, MFC8300 SHOULDER SCREW REMARKS FAX4750/5750, MFC8300/8600/8700

Section	Page
FAX4750, FAX5750, FAX8350P, FAX8750P, MFC8300, MFC8600, MFC8700, MFC9650 Parts and Service Manual.pdf	1
CHAPTER I. GENERAL DESCRIPTION	6
1. EQUIPMENT OUTLINE	7
1.1 External Appearance and Weight	7
1.2 Components	7
2. SPECIFICATIONS	8
CHAPTER II. INSTALLATION	25
1. INSTALLING THE UPDATE DATA TO THE	26
CHAPTER III. THEORY OF OPERATION	29
1. OVERVIEW	30
2. MECHANISMS	31
2.1 Scanner Mechanism	32
2.1.1 Document feeding and ejecting mechanism	32
2.1.2 Scanner	32
2.2 Laser Printing Mechanism	33
2.2.1 Paper pick-up and registration mechanism	33
2.2.2 Print process mechanism	34
(1) Charging process	35
(2) Exposing process	35
(3) Developing process	36
(4) Transferring process	36
2.2.3 Heat-fixing mechanism	37
2.2.4 Paper ejecting mechanism	38
2.3 Sensors and Actuators	39
3. CONTROL ELECTRONICS	41
3.1 Configuration	41
3.2 Main PCB	42
3.3 Engine PCB	44
3.4 NCU PCB	45
3.5 Control Panel PCB	48
3.6 Power Supply PCB	49
[ 1 ] Low-voltage power supply PCB	49
[ 2 ] High-voltage power supply PCB	50
CHAPTER IV. DISASSEMBLY/REASSEMBLY AND	52
1. DISASSEMBLY/REASSEMBLY	54
Safety Precautions	54
Preparation	55
How to Access the Object Component	55
Disassembly Order Flow	56
1.1 Rear Cover	57
1.2 Access Plates R and F	57
1.3 Control Panel ASSY	58
1.4 Panel Rear Cover and Control Panel	59
1.5 Document Feed Roller ASSY, Document Ejection Roller ASSY, and Pinch Rollers	62
1.6 CIS Unit	63
1.7 Scanner Frame ASSY (Scanner Motor, Scanner Drive Unit, Document Take-in Roller,	64
1.8 Top Cover (Exit Roller, Speaker, and Document Guides)	68
1.9 Handset Mount and Hook Switch PCB (for models equipped with a handset)	74
1.10 Paper Sub Tray	76
1.11 VC Cover, VC Bracket, and VC Connector PCB (for models supporting video capture)	77
1.12 Front Cover	78
1.13 Outer Chute and Paper Pinch Rollers	79
1.14 Main Cover	80
1.15 Switch Cover	81
1.16 Laser Unit	82
1.17 Heat-fixing Unit and FU Lamp	83
1.18 Fan	87
1.19 Drive Gear ASSY and Main Motor ASSY	89
1.20 NCU Shield and NCU PCB	91
1.21 Bottom Plate, Main PCB, and Bottom Insulation Film	93
1.22 Low-voltage Power Supply PCB and Power Inlet	97
1.23 Inner Insulation Film, High-voltage Power Supply PCB, Engine PCB, and 2nd Cassette Relay	99
1.24 Toner Sensor (light-receiver) PCB and Toner Sensor (LED) PCB	101
1.25 Gears and Paper Pick-up Roller	102
1.26 Paper Feed Roller ASSY	103
1.27 Clutch Levers, Cassette Guide L, and Solenoid	104
1.28 Paper Cassette	105
1.29 Cleaning of High-voltage Contacts and Grounding Contacts	106
2. LUBRICATION	108
[ 1 ] Document feed roller ASSY and document ejection roller ASSY	108
[ 2 ] Control panel locks	109
[ 3 ] Scanner frame ASSY, document take-in roller and its shaft, and separation roller and	109
[ 4 ] Top cover	110
[ 5 ] Drive gear ASSY	111
[ 6 ] Paper cassette	112
CHAPTER V. MAINTENANCE MODE	114
1. ENTRY INTO THE MAINTENANCE MODE	115
2. LIST OF MAINTENANCE-MODE FUNCTIONS	116
3. DETAILED DESCRIPTION OF MAINTENANCE-MODE FUNCTIONS	118
3.1 EEPROM Parameter Initialization	118
3.2 Printout of Scanning Compensation Data	119
3.3 ADF Performance Test	121
3.4 Test Pattern 1	122
3.5 Firmware Switch Setting and Printout	123
3.6 Operational Check of LCD	169
3.7 Operational Check of Control Panel PCB	169
3.8 Receiver Volume Adjustment (applicable to the American version only)	171
3.9 Sensor Operational Check	172
3.10 CIS Scanner Area Setting	173
3.11 EEPROM Customizing	173
3.12 Erasure of Received FAX Messages Temporarily Stored in the Flash Memory (not applicable to	174
3.13 Equipment Error Code Indication	174
3.14 Output of Transmission Log to the Telephone Line	175
3.15 Cancellation of the Memory Security Mode (applicable to the European version only)	175
CHAPTER VI. ERROR INDICATION AND TROUBLESHOOTING	177
1. ERROR INDICATION	178
1.1 Equipment Errors	178
[ 1 ] Error messages on the LCD	178
[ 2 ] Error codes shown in the \	181
1.2 Communications Errors	183
2. TROUBLESHOOTING	193
2.1 Introduction	193
2.2 Precautions	193
2.3 Checking prior to Troubleshooting	193
2.4 Troubleshooting Procedures	195
[ 1 ] Control panel related	195
[ 2 ] Telephone related	195
[ 3 ] Communications related	196
[ 4 ] Paper/document feeding related	196
[ 5 ] Print-image related	197
Location of High-voltage Contacts and Grounding Contacts	204
Appendix 1. EEPROM Customizing Codes	206
Appendix 2. Circuit Diagrams	209
A. Main PCB (FAX4750/MFC8300/MFC8600/MFC8700/FAX8350P/MFC9650)	210
A. Main PCB (FAX5750/FAX8750P)	217
B. Modem PCB	224
C. Engine PCB	227
D. NCU PCB	229
E. Control Panel PCB	234
F. Power Supply PCB	236
pl_fax8350_8750_mfc9650.pdf	241
List1(MAIN FRAME)	244
List2(DOCUMENT SCANNER)	246
List3(LASER UNIT)	248
List4(PAPER TRANSPORT)	250
List5(PAPER TRAY)	252
List6(HEAT FIXING UNIT)	254
List7(COVER)	256
List8(CONTROL PANEL)	258
List9(PCB ASSY)	260
List10(ACCESSORIES)	262
List11(PRINTED MATERIAL)	264
List12(CARTON)	266
FAX4750pc.pdf	268
List1(MAIN FRAME)	271
List2(DOCUMENT SCANNER)	273
List3(LASER UNIT)	275
List4(PAPER TRANSPORT)	277
List5(PAPER CASSETTE)	279
List6(HEAT FIXING UNIT)	281
List7(COVER)	283
List8(CONTROL PANEL)	285
List9(PCB ASSY)	287
List10(ACCESSORIES)	289
List11(PRINTED MATERIAL)	291

Match case Limit results 1 per page

List7(COVER)

REF.NO.

CODE

Q'TY

DESCRIPTION

REMARKS

LE1240001

MAIN COVER ASSY, WHITE(1495), MFC8600/8700 FOR US/CAN

LJ4122001

MAIN COVER ASSY, WHITE(1495), MFC8600 FOR ARL/NZ/ASA/GUL,

FAX4750/5750, MFC8300

UL9122001

PINCH ROLLER ASSY

UL9125001

PINCH ROLLER SPRING

UL9126001

OUTER CHUTE, WHITE(1495)

UL9127001

CHUTE SPRING L

UL9128001

CHUTE SPRING R

UU2074001

FRONT COVER ASSY, WHITE(1495), MFC8600/8700 FOR US/CAN

UU2102001

FRONT COVER ASSY, WHITE(1495), MFC8600 FOR ARL/NZ/ASA/GUL,

FAX4750/5750, MFC8300

7-1

UU2094001

FRONT SUB COVER, WHITE(1495), MFC8600 FOR ARL/NZ/ASA/GUL,

FAX4750/5750, MFC8300

7-2

087310815

TAPTITE, CUP B M3X8, MFC8600 FOR ARL/NZ/ASA/GUL,

FAX4750/5750, MFC8300

UL9140001

PAPER SUB TRAY, WHITE(1495)

UG6219001

VIDEO CAPTURE PCB ASSY, MFC8600/8700 FOR US/CAN

087320616

TAPTITE, CUP S M3X6, MFC8600/8700 FOR US/CAN

UU2044001

VC COVER, WHITE(1495), MFC8600/8700 FOR US/CAN

UU2045001

SWITCH COVER

UU2002001

REAR COVER, WHITE(1495)

0A5401006

SCREW, PAN (S/P WASHER) M4X10, MFC8300

0A5401006

SCREW, PAN (S/P WASHER) M4X10, FAX4750/5750, MFC8600/8700

UU2003001

TOP COVER, WHITE(1495)

UL9142001

EXIT ROLLER ASSY

LJ4125001

ANTI-STATIC BRUSH (LONG)

LE1242001

ANTI-STATIC BRUSH (SHORT)

UF6114008

DOCUMENT GUIDE, L, WHITE(1495)

UF6115008

DOCUMENT GUIDE, R, WHITE(1495)

UF4417000

GUIDE GEAR

UF4418001

SPRING, COMPRESSION

UF5034001

TAPTITE, B 3X6

LG2210001

SPEAKER UNIT

UU2048001

HANDSET HOLDER ASSY, GRAY(1495), EXCEPT FOR FAX5750 FOR ARL

UF8166008

LOWER HANDSET HOLDER, GRAY(1495)

LE1023001

SIDE COVER, FAX5750 FOR ARL

UG5030001

HOOK SWITCH PCB ASSY

UF8167008

ACTUATOR HOOK, GRAY(1495)

087311016

TAPTITE, CUP B M3X10

LE1126001

HOOK RUBBER, EXCEPT FOR FAX5750 FOR ARL

085320816

TAPTITE, BIND S M3X8

087321015

TAPTITE, CUP S M3X10, MFC8600/8700 FOR US/CAN

087321015

TAPTITE, CUP S M3X10, MFC8600 FOR ARL/NZ/ASA/GUL,

FAX4750/5750, MFC8300

UF9823001

SHOULDER SCREW

FAX4750/5750, MFC8300/8600/8700