form or by any means without perm ission in wri ting
from the publi sher.
Specifications are subject to change wit hout notice.
Confidential
Preface
This Service Manual is intended for use by service personnel and details the specifications,
const ruction, t heory of operat ion, and ma intenance for the Brother machines noted on the front cover.
It includes information required for troubleshooting and service--disassembly, reassembly, and
lubrication--so that service personnel will be able to understand equipment function, repair the
equipment in a timely manner a nd order s pare parts as neces sary.
To per for m app rop ria te maint enance s o tha t the mac hine is alwa ys in the bes t poss ible condit ion for
the cus tomer, service personnel must adequa tely unders tand and apply this manual .
How this manual is organized
This ma nual is ma de u p of nine chap ters and ap pendices.
CHAPTER 1PARTS NAMES AND FUNCTIONS
Conta ins ext erna l views and na mes of components and desc ribes their fu nctions . Infor mation abou t
the keys on the control p anel is included to help you check op erat ion or make adjustments.
CHAPTER 2SPECIFICATIONS
List s the sp ecif ic ations of each model, which enab les you to make a c omparison of different models.
CHAPTER 3THEORY OF OPERATION
Gives a n overview of the s canning a nd print ing mechanisms a s well as the sensor s, a ctua tors, and
control electronics. It aids in understanding the basic principles of operation as well as locating
defects f or troubl es hooting.
CHAPTER 4TRANSFER OF DATA LEFT IN THE M ACHINE TO BE SE NT FOR REP AIR
Descr ib es how to t r a nsf er da ta left in t he machine to b e sent f or r epa ir . T he s ervic e per sonnel s hould
inst ru ct end u s er s t o f oll ow t he t r ans fer pr o cedu re giv en in thi s ch a p t er if t he mac hi ne a t t he u s er s i t e
cannot print received dat a due t o the print ing mechanism defective. End us ers ca n tr ansfer r eceived
data to another machine to prevent data loss.
CHAPTER 5DISASSEMBLY/REASSEMBLY AND LUBRICATION
Deta ils pr ocedur es for disa ss embling a nd rea ssembling t he machine t ogether wit h rela ted notes . The
disassembly order flow provided enables you to see at a glance the quickest way to get to
component(s ) involved.
At the star t of a disa ssembly job, you check a disa ssembly order flow that guides you through a
shortcut to the ob ject components .
This chapter also covers screw tightening torques and lubrication points to which the specified
lubricants shou ld be app lied du ring reassembly job s.
CHAPTER 6ADJUSTMENTS AND UPDATING OF SETTINGS RE QUIRED AFTER P ARTS
REPLACEMENT
Deta ils a dju st ments a nd up da t ing of s ett ings , which a r e r equir ed if t he head/ ca r r i a ge unit, ma in PC B
and some other part s have been replac ed.
CHAPTER 7CLEANING
Provides cleaning pr ocedures not covered by the User's Manu al. Before starting any repair work,
clean t he mac hine as it ma y solve the pr oblem concerned.
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CHAPTER 8MAINTENANCE MODE
Describes the maintenance mode which is exclusively designed for the purpose of checks, settings
and adjustments using the keys on the control panel.
In the maintenance mode, you can update memory (EEPROM: electrically erasable programmable
read-only memory) contents for optimizing the drive conditions of the head/carriage unit, paper
feed roller or paper ejection roller (if they have been replaced) or for setting the CIS scanner area,
for example. You can also customize the EEPROM according to the shipment destination of the
machine concerned. In addition, you can perform operational checks of the LCD, control panel
PCB or sensors, perform a print test, display the log information or error codes, and modify
firmware switches (WSW).
CHAPTER 9ERROR INDICATION AND TROUBLESHOOTING
Details error messages and codes that the incorporated self-diagnostic functions display if any error
or malfunction occurs. If any error message appears, refer to this chapter to find which components
should be checked or replaced.
The latter half of this chapter provides sample problems that could occur in the main sections of the
machine and related troubleshooting procedures. This will help service personnel pinpoint and
repair defective components.
Appendix 1Serial Numbering System
Shows the location of serial number labels put on some parts and lists the coding information
pertaining to the serial numbers.
Appendix 2Firmware Installation
Provides instructions on how to update firmware stored in the flash ROM on the main PCB or load
firmware to a new main PCB from the host PC.
No hardware replacement is required for updating.
Appendix 3Customizing Codes According to Shipping Destination
Provides instructions on how to set up the customizing codes for the various preferences
exclusively designed for each destination (e.g. language). Those codes are stored in the memory
(EEPROM) mounted on the main PCB. If the main PCB is replaced, therefore, you need to set up
the proper customizing code with the machine in the maintenance mode.
Customizing codes customize firmware for individual models, enabling the common firmware to
be used for various models. They come with the firmware data provided by Brother Industries.
Appendix 4Firmware Switches (WSW)
Describes the functions of the firmware switches, which can be divided into two groups: one is for
customizing preferences designed for the shipping destination (as described in Appendix 3) and the
other is for modifying preferences that match the machine to the environmental conditions. Use the
latter group if the machine malfunctions due to mismatching.
Appendix 5Wiring Diagram
Provides the wiring diagram that helps you understand the connections between PCBs.
Appendix 6Circuit Diagrams
Provides the circuit diagrams of the MJ PCB and power supply PCB.
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Appendix 7Viewing the Event Log File
When insta lling the p rint er dr iver, t he insta ller logs events tha t occur dur ing the inst alla tion pr ocess
in the event log file. T his ap pendix views a sample of t he event log file. Selecting S ta rt | P rogr am |
Brot her | MF L-Pro Suite model name | Inst allation Diagnostics rea ds out the event log file.
This manual describes the models and their versions destined for major countries. The specifications and
functions are subject to change depending upon each destination.
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SAFETY PRECAUTIONS
To use the machine safely
Please refer to these instructions for later reference and before attempting any maintenance.
WARNING
There are high voltage electrodes inside the
machine. Before you clean the machine,
make sure you have unplugged t he
telephone line c or d fir st and then the power
cord from the AC power outlet .
To prevent injuries, be careful not to put your
hands on the edge of the machine under the
scanner cover.
Do not handle the plug with wet hands. Doing
this might cause an el ectr ic al shock.
To prevent injuries, be careful not to touch
the area shaded in the illustration.
When moving the machine you must lift it
from the base, by placing a hand at each side
of the unit as shown in the illustr ation. Do
NOT carry the machine by holding the
scanner cover.
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WARNING
n Use caution when in stalling or modifyin g telephone line s. Neve r touch tele phone wi res o r termin als th at are
not insulated unless the telephone line has been disconnected at the wall jack. Never install telephone
wiring during a lightning storm. Never install a telephone wall jack in a wet location.
n This prod uct m ust be in stalled ne ar an A C powe r outlet that is e asily acc e ssible . In case of eme rgencie s, yo u
must disconnect the power cord from the AC power outlet in order to shut off power completely.
n To reduce the r isk of s hock or fire, use onl y a No. 26 AWG or larger telecommunication line cord.
Caution
n Lightning and power surges can damage this product! We recommend that you use a quality surge
protection device on the AC power line and on the telephone line, or unplug the cords during a lightning
storm.
n When lifting up the machine, hold it from the base. Holding the scanning cover (scanner unit) leaves the
machine body inclined, disengaging the scanner cover from the machine body or letting the machine body
fall.
IMPORTANT SAFETY INSTRUCTIONS
When using your telephone equipment, basic saf ety pr ec autions should always be followed to
reduce the risk of fi r e, electric shock and injury to persons, i ncluding the following:
1. Do not use this product near water, for example, near a bath tub, wash bowl, kitchen sink or
washing machine, in a wet basem ent or near a swimming pool.
2. Avoid using this product during an electrical storm . T her e m ay be a rem ote risk of elec tric shock
from lightning.
3. Do not use this product t o report a gas leak in t he vi ci nity of the leak.
4. Use only the power cord provi ded with the MFC.
SAVE THESE INSTRUCTIONS
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Choosing a location
Place your MFC on a flat, stable surface that is free of vibration and shocks, such as a desk. Put the MFC near
a telephone wall jack and a standard, grounded AC power outlet. Choose a location where the temperature
remains between 50°F and 95°F (10°C and 35°C).
Caution
n Avoid placing your MFC in a high-traffic area.
n Avoid placing your MFC on the carpet.
n Do not place near heaters, air conditioners, water, chemicals, or refrigerators.
n Do not expose the MFC to direct sunlight, excessive heat, moisture, or dust.
n Do not connect your MFC to electrical outlets controlled by wall switches or automatic timers.
n Disruption of power can wipe out information in the MFC’s memory.
n Do not connect your MFC to electrical outlets on the same circuit as large appliances or other equipment
that might disrupt the power supply.
n Avoid interference sources, such as speakers or the base units of cordless phones.
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CHAPTER
PARTS NAMES & FUNCTIONS
Confidential
CHAPTER 1 PARTS NAMES & FUNCTIONS
This chapter contains external views and names of components and describes their functions.
Information about the keys on the control panel is included to help you check operation or make
adjustments.
*Provided on the MFC620CN/420CN/410CN and DCP310CN
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No.NameDescription
(1)Control panel
(2)Paper tray
Use the keys to operate the machine. The liquid crystal display
(LCD) shows the machine operation status.
Load paper here. Paper will be fed into the machine, sheet by
sheet.
(3)Telephone line jackPlug in the modular plug on the telephone line here.
(4)External telephone line jackPlug in the modular plug on the external telephone line here.
(5)Scanner cover (Scanner unit)Open to load ink cartridges or remove jammed paper.
ADF: Load documents (originals) here. Documents will be fed
ADF* & document cover ASSY
into the machine, page by page.
(6)
(*MFC620CN/420CN and FAX2440C)
Document cover: Open to place the document (original) on the
scanner glass.
(7)USB interface connectorConnect the USB cable here.
LAN cable connector
(8)
(MFC620CN/420CN/410CN and
DCP310CN)
Connect the LAN cable here.
(9)Jam clear coverOpen to remove paper jammed inside the machine.
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1.2CONTROL PANEL
n MFC620CN
n FAX2440C
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1. Message Center keys3. Dial Pad
MC On/Off
Lets you activate the Message Center and will blink
if you have new messages.
Play/Record
Lets you listen to voice messages stored in memory.
Also, lets you record telephone calls.
Erase
Lets you delete voice messages, all fax messages or
all messages.
2. Telephone keys
Microphone
Picks up your voice when you speak to another party
using Speaker Phone.
Speaker Phone
Lets you speak to another party without lifting the
handset.
Use these keys to dial telephone and fax numbers
and as a keyboard for entering information into the
machine.
The # key lets you temporarily switch the dialing
mode during a telephone call from Pulse to Tone.
4. Mode keys
PhotoCapture (MFC620CN only)
Lets you access the PhotoCapture Center™ mode.
Copy
Lets you access Copy mode.
Fax
Lets you access Fax mode.
Scan (MFC620CN only)
Lets you access Scan mode.
Redial/Pause
Redials the last number you called. It also inserts a
pause in auto dial numbers.
Hold
Lets you place telephone calls on hold.
Ink
Lets you clean the print heads, check the print
quality, and check the available ink volume.
5. Copy Options
You can quickly and easily select temporary settings
for copying.
6. Fax Resolution
Adjusts the resolution when you send a fax.
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7. Black Start
Lets you start sending faxes or making copies in
black and white.
Also for MFC620CN, lets you start a scanning
operation. (Color or mono, depending on the
scanning setting on your PC)
8. Color Start12. Liquid Crystal Display (LCD)
Search/Speed Dial
Lets you look up numbers that are stored in the
dialing memory. It also lets you dial stored numbers
by pressing # and a two-digit number.
Press to scroll backward to a menu selection.
or
Press to scroll through the menus and options.
Lets you start sending faxes or making copies in full
color.
Also for MFC620CN, lets you start a scanning
operation. (Color or mono, depending on the
scanning setting on your PC)
Displays messages on the screen to help you set up
and use your machine.
The LCD examples are for models with a two-line
display. There may be slight differences between the
examples and models that have a one-line display.
9. Stop/Exit13. One-Touch keys (FAX2440C only)
Stops an operation or exits from the menu.These keys give you instant access to previously
stored Quick-Dial numbers.
10. On/Off14. Shift (FAX2440C only)
You can turn the machine on or off.
Lets you access memory locations 4 to 6 in the OneTouch keys.
11. Navigation keys
Menu/Set
The same key is used for Menu and Set operations.
Lets you access the Menu to program and store your
settings in the machine.
When using the speaker or during ringing in fax
mode, you can press these keys to adjust the volume.
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n MFC210C
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1. Redial/Pause5. Mode keys
Redials the last number you called. It also inserts a
pause in auto dial numbers.
2. Hook
Press before dialing if you want to make sure a
machine will answer, and then press Black Start or
Color Start.
3. Ink
Lets you clean the print heads, check the print
quality, and check the available ink volume.
4. Dial Pad6. Copy Options
Use these keys to dial telephone or fax numbers and
as a keyboard for entering information into the MFC.
The # key lets you temporarily switch the dialing
mode during a telephone call from Pulse to Tone.
PhotoCapture
Lets you access the PhotoCapture Center™ mode.
Copy
Lets you access Copy mode.
Fax
Lets you access Fax mode.
Scan
Lets you access Scan mode.
You can quickly and easily select temporary settings
for copying.
7. Fax Resolution
Sets the resolution when you send a fax.
8. Black Start
Lets you start sending faxes or making copies in
black and white.
Also lets you start a scanning operation. (Color or
mono, depending on the scanning setting on your
PC)
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9. Color Start12. Liquid Crystal Display (LCD)
Lets you start sending faxes or making copies in full
color.
Also lets you start a scanning operation. (Color or
mono, depending on the scanning setting on your
PC)
10. Stop/Exit13. On/Off
Stops an operation or exits from the menu.
11. Navigation keys
Menu/Set
The same key is used for Menu and Set operations.
Lets you access the Menu to program and store your
settings in the MFC.
When using the speaker or during ringing in fax
mode, you can press these keys to adjust the volume.
Displays messages on the screen to help you set up
and use your MFC. The LCD examples in this guide
are for models with a two-line display. There may be
slight differences between the examples provided
and models with a one-line display.
You can turn the MFC on or off.
Search/Speed Dial
Lets you look up numbers that are stored in the
dialing memory. It also lets you dial stored numbers
by pressing # and a two-digit number.
Press to scroll backward to a menu selection.
or
Press to scroll through the menus and options.
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1.3COMPONENTS
The machine consists of the following major components:
Scanner cover
(Scanner unit)
Scanner cover
damper
Scanner cover
stopper
Upper cover
Ink absorber box
Document cover***
ADF & document
cover ASSY**
Control panel
ASSY
Head/carriage unit
Maintenance unit
Engine unit
Ink refill
ASSY
Lower cover
Hook switch
PCB*
Handset
mount*
Handset*
MJ/PS shield
box
Power supply
PCB
* MFC620CN U.S.A./Canadian models and FAX2440C
** MFC620CN/420CN and FAX2440C
*** MFC410CN/210C and DCP310CN/110C
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Main PCB
ASSY
Paper tray
MJ PCB
CHAPTER
SPECIFICATIONS
Confidential
CHAPTER 2 SPECIFICATIONS
This chapter lists the specifications of each model, which enables you to make a comparison of
different models.
2.2SPECIFICATIONS LIST .................................................................................................. 2-7
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2.1GENERAL
2.1.1 General Specifications
Memory Capacity
MFC620CN:
Automatic Document Feeder (ADF)Up to 10 sheets
MFC620CN/420CN and FAX2440C only)
(
Paper Tray100 sheets (20 lb.)
Printer Type Ink Jet
Print MethodPiezo with 74 nozzles for each of three colors + a pair of 74 nozzles
Liquid Crystal Display (LCD)
MFC620CN:
Operating Environment 50 to 95°F (10 to 35°C)
Best Print Quality 68 to 91°F (20 to 33°C)
Power Source 100 to 120 VAC, 50/60 Hz (U.S.A./Canada)
Power Consumption
MFC620CN U.S.A./Canadian models:
MFC620CN European/Asian models:Minimum: under 4.0 Wh
16 MB
for black
16 characters x 2 lines
230 VAC, 50/60 Hz (Europe/Asia)
Minimum: under 3.5 Wh
Standby: 9.5 Wh or less (25°C)
Peak: 27 Wh or less
Standby: 9.5 Wh or less (25°C)
Peak: 26 Wh or less
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Dimensions (W x D x H)
MFC620CN U.S.A./Canadian models and FAX2440C:
17.3 x 13.7 x 6.5 inches (438 x 347 x 165 mm)
(with paper tray and document17.9 x 17.9 x 6.5 inches (454 x 455 x 165 mm)
stopper opened)
14.8" (375 mm)
17.9" (455 mm)
13.7" (347 mm)
6.5"
(165 mm)
MFC620CN European/Asian models and MFC420CN:
14.7 x 13.6 x 6.5 inches (373 x 345 x 165 mm)
(with paper tray and document14.8 x 17.9 x 6.9 inches (375 x 455 x 174 mm)
stopper opened)
6.5"
(165 mm)
MFC210C and DCP310CN/110C:
14.7 x 13.6 x 5.3 inches (373 x 345 x 135 mm)
(with paper tray opened)14.7 x 17.8 x 5.3 inches (373 x 453 x 135 mm)
5.3"
(135 mm)
14.2" (361 mm)
14.7" (373 mm)
17.3" (438 mm)
14.8" (375 mm)
14.2" (361 mm)
14.7" (373 mm)
6.9"
(174 mm)
6.9"
(174 mm)
12.7" (322 mm)
13.6" (345 mm)
17.9" (455 mm)
13.7" (347 mm)
12.7" (322 mm)
13.6" (345 mm)
Weight
MFC620CN:
14.2" (361 mm)
14.7" (373 mm)
(Machine proper)13.4 lb. (6.1 kg) U.S.A./Canadian models
13.2 lb. (6 kg)European/Asian models
(In package)
17.6 lb. (8 kg)U.S.A./Canadian models
18.9 lb. (8.6 kg) European/Asian models
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12.7" (322 mm)
13.6" (345 mm)
17.8" (453 mm)
2.1.2 Paper Specifications
Recommended Paper
Brother Paper
Transparencies: 3M Transparency Film
Paper Type and Size for Each Operation
Paper TypePaper Size
FaxCopyPhotoCapture Printer
Cut SheetLetter8 1/2" x 11" (216 x 279 mm)YesYesYesYes
A48.3" x 11.7" (210 x 297 mm)YesYesYesYes
Legal8 1/2" x 14" (216 x 356 mm)YesYes-Yes
Executive7 1/4" x 10 1/2" (184 x 267 mm) ---Yes
JIS B57.2" x 10.1" (182 x 257 mm)---Yes
A55.8" x 8.3" (148 x 210 mm)-Yes-Yes
A64.1" x 5.8" (105 x 148 mm)---Yes
CardsPhoto4" x 6" (102 x 152 mm)-YesYesYes
Photo L3 1/2" x 5" (89 x 127 mm)---Yes
Photo 2L5" x 7" (127 x 178 mm)--YesYes
Index Card5" x 8" (127 x 203 mm)---Yes
Post Card 13.9" x 5.8" (100 x 148 mm)---Yes
Post Card 2
(Double)
EnvelopesC5 Envelope6.4" x 9" (162 x 229 mm)---Yes
5.8" x 7.9" (148 x 200 mm)---Yes
Usage
DL Envelope4.3" x 8.7" (110 x 220 mm)---Yes
COM-104 1/8" x 9 1/2" (105 x 241 mm)---Yes
Monarch3 7/8" x 7 1/2" (98 x 191 mm)---Yes
JE4 Envelope 4.1" x 9.3" (105 x 235 mm)---Yes
Transparencies Letter8 1/2" x 11" (216 x 279 mm)-Yes-Yes
A48.3" x 11.7" (210 x 297 mm)-Yes-Yes
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Paper Weight, Thickness and Capacity
Paper TypeWeightThicknessNo. of sheets
Cut SheetPlain Paper17 to 32 lb
(64 to 120 g/m
Inkjet Paper17 to 53 lb
(64 to 200 g/m
Glossy PaperUp to 58 lb
(Up to 220 g/m
CardsPhoto CardUp to 64 lb
(Up to 240 g/m
Index CardUp to 32 lb
(Up to 120 g/m
Post CardUp to 53 lb
(Up to 200 g/m
2
)
2
)
2
2
2
2
0.003" to 0.006"
(0.08 to 0.15 mm)
0.003" to 0.01"
(0.08 to 0.25 mm)
Up to 0.01"
)
(Up to 0.25 mm)
Up to 0.01"
)
(Up to 0.28 mm)
Up to 0.006"
)
(Up to 0.15 mm)
Up to 0.01"
)
(Up to 0.23 mm)
Envelopes-Up to 0.02"
(Up to 0.52 mm)
Transparencies--10
* Up to 50 sheets for Legal size paper (20 lb).
* Up to 100 sheets of 20 lb.
100
20
20
20
30
30
10
Paper Capacity of the Output Paper Support
Output Paper SupportUp to 25 sheets of 20 lb (Letter)
n Transparencies or glossy paper must be picked up from the
output paper support one page at a time to avoid smudging.
n Legal paper cannot be stacked on the output paper support.
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Do not use paper or envelopes:
n that are damaged, curled, wrinkled, or irregularly shaped
0.04 in.
or longer
0.04 in.
or longer
n that are extremely shiny or highly textured
n that were previously printed by a printer
n that cannot be arranged uniformly when stacked
n that are made with a short grain
Do not use envelopes:
n that are of a baggy construction
n that are embossed (have raised writing on them)
n that have clasps on them
n that are not sharply creased
n that are preprinted on the inside
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2.1.3 Printable Area
The printable area depends on the settings in the application you are using. The figures below show the
unprintable areas on cut sheet paper and envelopes.
Cut Sheet PaperEnvelopes
(3)(4)
(1)(1)
(2)(2)
unprintable area
Paper(1) Top(2) Bottom(3) Left(4) Right
(3)(4)
Cut sheet
Envelopes0.47 in.0.94 in.0.12 in.0.12 in.
0.12 in.
(0 in.)*
0.12 in.
(0 in.)*
0.12 in.
(0 in.)*
0.12 in.
(0 in.)*
* When you set the Borderless feature to On.
Printable area depends on the Printer driver settings.
The figures above are approximate and the printable area may
vary depending on the type of cut sheet paper you are using.
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2.2 SPECIFICATIONS LIST
(
)
(
)
(
)
(
)
p
p
MFC210C/MFC420CN/MFC410CN
USAEURASIA/OCE/C H N USAEURASIA/OCE/CHN
Model name
GENERAL
Print Engine
Technology
Scanning Method
CPU Speed
Back up Clock
Operating Environment