Brother DCP 750CW User Manual

							Troubleshooting and Routine Maintenance
73
Clean the outside of the machine as 
follows:
B
aPull the paper tray (1) completely out of 
the machine.
 
bWipe the outside of the machine with a 
soft cloth to remove dust.
 
cLift the output paper tray cover and 
remove anything that is stuck inside the 
paper tray.
dWipe the inside and outside of the paper 
tray with a soft cloth to remove dust.
 
eClose the output paper tray cover and 
put the paper tray firmly back in the 
machine.
Cleaning the scannerB
aLift the document cover (1). Clean the 
scanner glass (2) and white plastic (3) 
with isopropyl alcohol on a soft lint-free 
cloth.
 
bIn the ADF unit, clean the white bar (1) 
and the glass strip (2) under it with 
isopropyl alcohol on a lint-free cloth.
 
1
2
1
3
1
2
 
						

							74
Cleaning the machine printer 
platenB
WARNING 
Unplug the machine from the AC power 
outlet before cleaning the printer platen (1).
 
aClean the machine printer platen (1) and 
the area around it, wiping off any 
scattered ink with a soft, dry, lint-free 
cloth.
 
Cleaning the Paper Pick-up 
RollerB
aPull the paper tray completely out of the 
machine.
bUnplug the machine from the electrical 
socket and remove the Jam Clear Cover 
(1).
 
cClean the Paper Pick-up Roller (1) with 
isopropyl alcohol on a cotton swab.
 
dPut the Jam Clear Cover back on.
Make sure the cover is set properly.
eRe-connect the power cord.
fSlowly push the paper tray completely 
back into the machine.
1
1
1
 
						

							Troubleshooting and Routine Maintenance
75
Cleaning the print headB
To ensure good print quality, the machine will 
regularly clean the print head. You can start 
the cleaning process manually if needed.
Clean the print head and ink cartridges if you 
get a horizontal line in the text or graphics on 
your printed pages. You can clean Black only, 
three colours at a time 
(Yellow/Cyan/Magenta), or all four colours at 
once.
Cleaning the print head consumes ink. 
Cleaning too often uses ink unnecessarily.
CAUTION 
DO NOT touch the print head. Touching the 
print head may cause permanent damage 
and may void the print heads warranty.
 
aPress Ink Management.
bPress a or b to choose Cleaning.
Press OK.
cPress a or b to choose Black, Color 
or All.
Press OK.
The machine cleans the print head. 
When cleaning is finished, the machine 
will go back to standby mode 
automatically.
Note
If you clean the print head at least five 
times and the print has not improved, call 
your Brother dealer.
 
Checking the print qualityB
If faded or streaked colours and text appear 
on your output, some of the nozzles may be 
clogged. You can check this by printing the 
Print Quality Check Sheet and looking at the 
nozzle check pattern.
aPress Ink Management.
bPress a or b to choose Test Print.
Press OK.
cPress a or b to choose 
Print Quality.
Press OK.
dPress Colour Start.
The machine begins printing the Print 
Quality Check Sheet.
eCheck the quality of the four colour 
blocks on the sheet.
fDo one of the following:
„If all lines are clear and visible, press 
+ to choose Yes, and go to stepj.
„If you can see missing short lines as 
shown below, press - to choose No.
gThe LCD asks you if the print quality is 
OK for black and three colours.
Press + (Yes) or - (No).
hThe LCD asks you if you want to start 
cleaning.
Press + (Yes).
The machine starts cleaning the print 
head.
iAfter cleaning is finished, press 
Colour Start.
The machine starts printing the Print 
Quality Check Sheet again and then 
returns to stepe.
jPress Stop/Exit.
If you repeat this procedure at least five 
times and the print quality is still poor, 
replace the ink cartridge for the clogged 
colour.  OK Poor
  
 
						

							76
After replacing the ink cartridge, check 
the print quality. If the problem still 
exists, repeat the cleaning and test print 
procedures at least five times for the 
new ink cartridge. If ink is still missing, 
call your Brother dealer.
CAUTION 
DO NOT touch the print head. Touching the 
print head may cause permanent damage 
and may void the print heads warranty.
 
Note
 
Checking the printing 
alignmentB
You may need to adjust the printing 
alignment if after transporting the machine 
your printed text becomes blurred or images 
become faded.
aPress Ink Management.
bPress a or b to choose Test Print.
Press OK.
cPress a or b to choose Alignment.
Press OK.
dPress Mono Start or Colour Start.
The machine starts printing the 
Alignment Check Sheet.
eCheck the 600 dpi and 1200 dpi test 
prints to see if number 5 most closely 
matches number 0. 
„If the number 5 sample of both the 
600 dpi and 1200 dpi are the best 
matches, press + (Yes) to finish 
Alignment Check, and go to steph.
„If another test print number is a 
better match for either 600 dpi or 
1200 dpi, press - (No) to choose it.
fFor 600 dpi, press d or c to select the 
number of the test print that most closely 
matches the number 0 sample (1-8).
Press OK.
gFor 1200 dpi, press d or c to select the 
number of the test print that most closely 
matches the number 0 sample (1-8).
Press OK.
hPress Stop/Exit.
Checking the ink volumeB
You can check the ink that is left in the 
cartridge.
aPress Ink Management.
bPress a or b to select Ink Volume.
Press OK.
The LCD shows the ink volume.
cPress Stop/Exit.
Note
You can check the ink volume from your 
computer. (See Printing for Windows
® or 
Printing and Faxing for Macintosh
® in the 
Software Users Guide on the CD-ROM.)
   
i
 
When a print head 
nozzle is clogged 
the printed 
sample looks like 
this.After the print 
head nozzle is 
cleaned, the 
horizontal lines 
are gone.
 
						

							Troubleshooting and Routine Maintenance
77
Machine InformationB
Checking the serial numberB
You can see the machine’s serial number on 
the LCD.
aPress Menu.
bPress a or b to select 
Machine Info..
Press OK.
cPress a or b to select Serial No..
Press OK.
dPress Stop/Exit.
Packing and shipping 
the machine
B
When you transport the machine, use the 
packing materials that came with your 
machine. If you do not pack the machine 
properly, you could void your warranty.
CAUTION 
It is important to allow the machine to ‘park’ 
the print head after a print job. Listen 
carefully to the machine before unplugging 
it to make sure that all mechanical noise 
has stopped. Not allowing the machine to 
finish this parking process may lead to print 
problems and possible damage to the print 
head.
 
aOpen the ink cartridge cover. 
bPull the lock release levers down and 
take out all ink cartridges. 
(See Replacing the ink cartridges 
on page 70.)
cInstall the yellow protective part, lift each 
lock release lever and push it until it 
clicks, and then close the ink cartridge 
cover.
 
 
						

							78
CAUTION 
If you are not able to find the yellow 
protective part, DO NOT remove the ink 
cartridges before shipping. It is essential 
that the machine be shipped with either the 
yellow protective parts or the ink cartridges 
in position. Shipping without them will 
cause damage to your machine and may 
void your warranty.
 
dUnplug the machine from the electrical 
socket.
eUsing both hands, use the plastic tabs 
on both sides of the machine to lift the 
scanner cover until it locks securely into 
the open position then unplug the 
interface cable from the machine, if it is 
connected.
fLift the scanner cover to release the lock 
(1). Gently push the scanner cover 
support down (2) and close the scanner 
cover (3).
 
gWrap the machine in the bag and put it 
in the original carton with the original 
packing material.
 
hPack the printed materials in the original 
carton as shown below. Do not pack the 
used ink cartridges in the carton.
 
iClose the carton and tape it shut. 
 
						

							79
C
On-screen 
programming
C
Your machine is designed to be easy to use 
with LCD on-screen programming using the 
menu keys. User-friendly programming helps 
you take full advantage of all the menu 
selections your machine has to offer.
Since your programming is done on the LCD, 
we have created step-by-step on-screen 
instructions to help you program your 
machine. All you need to do is follow the 
instructions as they guide you through the 
menu selections and programming options.
Menu tableC
You can program your machine without the 
User’s Guide by using the Menu table that 
begins on page 80. These pages list the 
menu selections and options.
Menu keysC
Menu and FeaturesC
 
Access the main 
menu.
 
Access its menu of 
temporary settings.
a
bScroll through the 
current menu level.
dGo back to the 
previous menu level.
cGo to the next menu 
level.
 „Go to the next 
menu level.
„Accept an option.
 Select the number to 
enter.
 
Stop the current 
operation.
 
						

							80
Menu tableC
The menu table will help you understand the menu selections and options that are found in the 
machines programs. The factory settings are shown in Bold with an asterisk.
Menu ( )C
Level1 Level2 Level3 Options Descriptions Page
General Setup Paper Type—Plain Paper*
Inkjet Paper
Brother Photo
Other Photo
TransparencySets the type of paper in the 
paper tray.23
Paper Size—Letter
Legal
A4*
A5
10x15cmSets the size of the paper in 
the paper tray.23
LCD Settings LCD ContrastLight
Med*
DarkAdjusts the contrast of the 
LCD.24
Backlight Light*
Med
DarkYou can adjust the 
brightness of the LCD 
backlight.24
Dim TimerOff
10 Secs
20 Secs
30 Secs*You can set how long the 
LCD backlight stays on for 
after the last key press.25
Off Timer Off*
1 Min
2 Mins
3 Mins
5 Mins
10 Mins
30 MinsYou can set how long the 
LCD stays on for after the 
last key press.25
 The factory settings are shown in Bold with an asterisk.
 
						

							Menu and Features
81
LAN 
(DCP
-540CN 
only)TCP/IP BOOT Method Auto*
Static
RARP
BOOTP
DHCPChooses the BOOT method 
that best suits your needs.
See 
Network 
User s 
Guide 
on the 
CD-
ROM
IP Address[000-255].
[000-255].
[000-255].
[000-255] Enter the IP address.
Subnet Mask[000-255].
[000-255].
[000-255].
[000-255]Enter the Subnet mask.
Gateway[000-255].
[000-255].
[000-255].
[000-255]Enter the Gateway address.
Node NameBRN_XXXXXXYou can see the current 
Node name.
WINS Config Auto*
StaticChooses the WINS 
configuration mode.
WINS Server(Primary) 
000.000.000.000
(Secondary) 
000.000.000.000
Specifies the IP address of 
the primary or secondary 
server.
DNS Server(Primary) 
000.000.000.000
(Secondary) 000.000.000.000
Specifies the IP address of 
the primary or secondary 
server.
APIPA On*
OffAutomatically allocates the 
IP address from the link-
local address range.
Setup Misc. Ethernet Auto*
100B-FD
100B-HD
10B-FD
10B-HDChooses the Ethernet link 
mode. Level1 Level2 Level3 Options Descriptions Page
 The factory settings are shown in Bold with an asterisk.
 
						

							82
LAN 
(DCP
-540CN 
only)
(Continued)Factory Reset—Yes
NoRestores all network 
settings to the factory 
default.
See 
Network 
Users 
Gui de 
on the 
CD-
ROM
LAN 
(DCP
-750CW 
only)TCP/IP(Wired) BOOT Method Auto*
Static
RARP
BOOTP
DHCPChooses the BOOT method 
that best suits your needs.
IP Address[000-255].
[000-255].
[000-255].
[000-255] Enter the IP address.
Subnet Mask[000-255].
[000-255].
[000-255].
[000-255]Enter the Subnet mask.
Gateway[000-255].
[000-255].
[000-255].
[000-255]Enter the Gateway address.
Node NameBRN_XXXXXXYou can see the current 
Node name.
WINS Config Auto*
StaticChooses the WINS 
configuration mode.
WINS Server(Primary) 
000.000.000.000
(Secondary) 000.000.000.000
Specifies the IP address of 
the primary or secondary 
server.
DNS Server(Primary) 
000.000.000.000
(Secondary) 
000.000.000.000
Specifies the IP address of 
the primary or secondary 
server.
APIPA On*
OffAutomatically allocates the 
IP address from the link-
local address range. Level1 Level2 Level3 Options Descriptions Page
 The factory settings are shown in Bold with an asterisk.