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Brother International MFC 8500 Service Manual - Page 122

NOTES, Firmware Switches WSW01 through WSW50

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WSW No. WSW34 WSW35 WSW36 WSW37 WSW38 WSW39 WSW40 WSW41 WSW42 WSW43 WSW44 WSW45 WSW46 WSW47 WSW48 to 50 Firmware Switches (WSW01 through WSW50) Continued Function Function setting 12 Function setting 13 Function setting 14 Function setting 15 Function setting 16, in V. 34 mode Transmission speed setting in V. 34 mode Function setting 17, in V. 34 mode CCD fluorescent lamp and modem attenuator, in V. 34 mode Function setting 18 Function setting 19 Speeding up scanning-1 Speeding up scanning-2 Monitor of power ON/OFF state and parallel port kept at high Delay of FAX line disconnection Not used. Reference Page 35 35 36 37 38 39 40 42 43 44 44 45 46 47 47 n Operating Procedure (1) Press the 1 and 0 keys in this order in the initial stage of the maintenance mode. The equipment displays the "WSW00" on the LCD and becomes ready to accept a firmware switch number. (2) Enter the desired number from the firmware switch numbers (01 through 50). The following appears on the LCD: Selector 1 Selector 8 ↓ ↓ WSWXX = 0 0 0 0 0 0 0 0 (3) Use the and 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 switches is completed. (7) Press the Set or Stop key to return the equipment to the initial stage of the maintenance mode. NOTES: • To cancel this operation and return the equipment to the initial stage of the maintenance mode during the above procedure, press the Stop key. • If there is a pause of more than one minute after a single-digit number is entered for double-digit firmware switch numbers, the equipment will automatically return to the initial stage of the maintenance mode. n Details of Firmware Switches The details of the firmware switches are described in Appendix 2 in which the user-accessible selectors of the firmware switches are shaded. V - 10

Section	Page
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	21
1. INSTALLING THE UPDATE DATA TO THE FACSIMILE MACHINE	22
2. SETTING ID CODES TO FACSIMILE MACHINES	24
CHAPTER III. THEORY OF OPERATION	26
1. OVERVIEW	27
2. MECHANISMS	28
2.1 Scanner Mechanism	29
2.1.1 Document feeding and ejecting mechanism	29
2.1.2 Scanner	29
2.2 Laser Printing Mechanism	30
2.2.1 Paper pick-up and registration mechanism	30
2.2.2 Print process mechanism	31
(1) Charging process	32
(2) Exposing process	32
(3) Developing process	33
(4) Transferring process	33
2.2.3 Heat-fixing mechanism	34
2.2.4 Paper ejecting mechanism	35
2.3 Sensors and Actuators	36
3. CONTROL ELECTRONICS	38
CHAPTER IV. DISASSEMBLY/REASSEMBLY AND LUBRICATION	40
1. DISASSEMBLY/REASSEMBLY	42
Safety Precautions	42
Preparation	43
How to Access the Object Component	43
Disassembly Order Flow	44
1.1 Rear Cover	45
1.2 Access Plates R and F	45
1.3 Control Panel ASSY	46
1.4 Panel Rear Cover and Control Panel	47
1.5 Document Feed Roller ASSY, Document Ejection Roller ASSY, and Pinch Rollers	50
1.6 CIS Unit	51
1.7 Scanner Frame ASSY (Scanner Motor, Scanner Drive Unit, Document Take-in Roller,	52
1.8 Top Cover (Exit Roller, Speaker, and Document Guides)	56
1.9 Handset Mount and Hook Switch PCB (for models equipped with a handset)	62
1.10 Paper Sub Tray	64
1.11 VC Cover, VC Bracket, and VC Connector PCB (for models supporting video capture)	65
1.12 Front Cover	66
1.13 Outer Chute and Paper Pinch Rollers	67
1.14 Main Cover	68
1.15 Switch Cover	69
1.16 Laser Unit	70
1.17 Heat-fixing Unit and FU Lamp	71
[Disassembling the heat-fixing unit]	73
1.18 Fan	85
1.19 Drive Gear ASSY and Main Motor ASSY	87
1.20 NCU Shield and NCU PCB	89
1.21 Bottom Plate, Main PCB, and Bottom Insulation Film	91
1.22 Low-voltage Power Supply PCB and Power Inlet	95
1.23 Inner Insulation Film, High-voltage Power Supply PCB, Engine PCB, and 2nd Cassette Relay PCB*	97
1.24 Toner Sensor (light-receiver) PCB and Toner Sensor (LED) PCB	99
1.25 Gears and Paper Pick-up Roller	100
1.26 Paper Feed Roller ASSY	101
1.27 Clutch Levers, Cassette Guide L, and Solenoid	102
1.28 Paper Cassette	103
1.29 Cleaning of High-voltage Contacts and Grounding Contacts	104
2. LUBRICATION	106
[ 1 ] Document feed roller ASSY and document ejection roller ASSY	106
[ 2 ] Control panel locks	107
[ 3 ] Scanner frame ASSY, document take-in roller and its shaft, and separation roller and its shaft	107
[ 4 ] Top cover	108
[ 5 ] Drive gear ASSY	109
[ 6 ] Paper cassette	110
CHAPTER V. MAINTENANCE MODE	112
1. ENTRY INTO THE MAINTENANCE MODE	113
2. LIST OF MAINTENANCE-MODE FUNCTIONS	114
3. DETAILED DESCRIPTION OF MAINTENANCE-MODE FUNCTIONS	116
3.1 EEPROM Parameter Initialization	116
3.2 Printout of Scanning Compensation Data	117
3.3 ADF Performance Test	119
3.4 Test Pattern 1	120
3.5 Firmware Switch Setting and Printout	121
[ A ] Firmware switch setting	121
[ B ] Printout of firmware switch data	123
3.6 Operational Check of LCD	124
3.7 Operational Check of Control Panel PCB	124
3.8 Receiver Volume Adjustment (applicable to the American version only)	126
3.9 Sensor Operational Check	127
3.10 Fine Adjustment of Scanning Start/End Position	128
3.11 CIS Scanner Area Setting	129
3.12 EEPROM Customizing	129
3.13 Display of the Equipment's Log Information	130
3.14 Equipment Error Code Indication	131
3.15 Output of Transmission Log to the Telephone Line	131
3.16 Cancellation of the Memory Security Mode (applicable to the European version only)	132
CHAPTER VI. ERROR INDICATION AND TROUBLESHOOTING	134
1. ERROR INDICATION	135
1.1 Equipment Errors	135
[ 1 ] Error messages on the LCD	135
[ 2 ] Error codes shown in the \	139
1.2 Communications Errors	141
2. TROUBLESHOOTING	151
2.1 Introduction	151
2.2 Precautions	151
2.3 Checking prior to Troubleshooting	151
2.4 Troubleshooting Procedures	153
[ 1 ] Control panel related	153
[ 2 ] Telephone related	153
[ 3 ] Communications related	154
[ 4 ] Paper/document feeding related	154
[ 5 ] Print-image related	155
Location of High-voltage Contacts and Grounding Contacts	162
Appendix 1. EEPROM Customizing Codes	164
Appendix 2. Firmware Switches (WSW)	167
Appendix 3. Circuit Diagrams	215
A. Main PCB (MFC8500)	216
B. Main PCB (MFC9660)	226
C. Engine PCB	227
D. NCU PCB	228
E. Control Panel PCB	232

Match case Limit results 1 per page

V -

Firmware Switches (WSW01 through WSW50)

Continued

WSW No.

Function

Reference Page

WSW34

Function setting 12

WSW35

Function setting 13

WSW36

Function setting 14

WSW37

Function setting 15

WSW38

Function setting 16, in V. 34 mode

WSW39

Transmission speed setting in V. 34 mode

WSW40

Function setting 17, in V. 34 mode

WSW41

CCD fluorescent lamp and modem attenuator, in V. 34 mode

WSW42

Function setting 18

WSW43

Function setting 19

WSW44

Speeding up scanning-1

WSW45

Speeding up scanning-2

WSW46

Monitor of power ON/OFF state and parallel port kept at high

WSW47

Delay of FAX line disconnection

WSW48 to 50

Not used.

Operating Procedure

(1)

Press the

and

keys in this order in the initial stage of the maintenance mode.

The equipment displays the "WSW00" on the LCD and becomes ready to accept a firmware

switch number.

(2)

Enter the desired number from the firmware switch numbers (01 through 50).

The following appears on the LCD:

Selector 1

Selector 8

↓

WSWXX =

0 0 0 0 0 0 0 0

(3)

Use the

and

keys to move the cursor to the selector position to be modified.

(4)

Enter the desired number using the

and

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 switches is

completed.

(7)

Press the

Set

Stop

key to return the equipment to the initial stage of the maintenance mode.

NOTES:

• To cancel this operation and return the equipment to the initial stage of the

maintenance mode during the above procedure, press the

Stop

key.

•

If there is a pause of more than one minute after a single-digit number is entered for

double-digit firmware switch numbers, the equipment will automatically return to the

initial stage of the maintenance mode.

Details of Firmware Switches

The details of the firmware switches are described in Appendix 2 in which the user-accessible

selectors of the firmware switches are shaded.