Brother Printers Mfc 7750 Laser 600x600dpi Super G3 Fax Owners Manual

							207TROUBLESHOOTING AND MAINTENANCE
MFC Connect Failure or Bi-Directional
Communication Error
Recently,  some printers have included a function to show the printer status
on the PC display.  Such printers use the bi-directional communication
parallel port between the printer and the PC.  Our MFCs have a
bi-directional parallel port function. Since Windows
¨ 3.xx does not support
bi-directional communication on the parallel port, each peripheral vendor
has developed and supplied a bi-directional device driver, which will be
installed into Windows
¨ 3.xx.  If you install two or more different
bi-directional device drivers into Windows
¨, they may conflict with each
other and cause problems.
Please make sure you have installed the MFC driver, by executing
SETUP.EXE from your CD-ROM drive, following the instructions on the
CD-ROM label. The bi-directional communication may be disabled when
the driver is installed from the Add menu in ÒPrintersÓ of the Control Panel.
Please restart Windows
¨.
Remove the conflicting situation caused by one of the following printer
drivers. Review the following sections that apply to any additional printer
drivers you may have installed into your Windows
¨ software.
Brother HL-6/6V/10h/630series/660series/960/1260/WL-660
HP LaserJet series II, IID, IIP, IIP+, III, IIID, IIIP or IV Plus
NEC SuperScript 610/660
EPSON ActionLaser  1100/1400
LexMark WinWriter 200
Brother HL-6/6V/10h/630series/660series/960/1260/
WL-660:
The Resource Manager for MFC 4350, MFC 4650, MFC 6650MC and
MFC 7750 may not work if the printer drivers for the above models are
installed after the installation of the MFC printer drivers.
In this case, please install the Brother printer driver again or copy
BI-DI.386 from the CD-ROM to the Windows/System directory.
(NOTE: BI-DI.386 on the CD-ROM is not compressed.) 
						

							208CHAPTER NINETEEN
HP LaserJet series II, IID, IIP, IIP+, III, IIID or IIIP:
If Microsoft Windows¨ Printing System is used for the above models, you
must  modify the Òwin.iniÓ file in the Windows
¨ directory to turn the
printers
bi-directional function off.
We recommend that you do a back-up before you modify the WIN.INI or
SYSTEM.INI files, just in case.
Open the Òwin.iniÓ file using the ÒNotepadÓ application. Look for the
following statement in the [spooler] section.
[spooler]
QP.LPT1 = wpsljqp.dll
Then disable this function, by adding a semicolon at the beginning of the
above sentence as follows:
[spooler]
;QP.LPT1 = wpsljqp.dll
Then, open the Òsystem.iniÓ file using the ÒNotepadÓ application. Look for
the following statement in the [386Enh] section:
[386Enh]
device=wpsljvpd.386
:
:
WPSLPT1=1
Then disable this function, by adding a semicolon at the beginning of the
above sentences as follows:
;device=wpsljvpd.386
:
:
;WPSLPT1=1
You must restart Windows
¨ to make these modifications effective.
These modifications disable the printer status reporting on your PC;
however, you will be able to use the MFC with no further problems.
HP LaserJet 4 Plus:
Please uninstall the Main Status window by double clicking the Un-install
Status window in HP LaserJet group.
NEC SuperScript 610/660:
Please remove the NEC SuperScript driver by running the NECDELET.EXE
file in Disk 1 that is included with NEC printers. 
						

							209TROUBLESHOOTING AND MAINTENANCE
EPSON ActionLaser 1100 / 1400:
Please remove the EPSON Action Laser 1100/1400 driver by running the
EPDELETE.EXE file in the Windows
¨ Printer Driver for these models.
Lexmark WinWriter  200:
You must modify the Òwin.iniÓ and Òsystem.iniÓ files in the Windows¨
directory to turn off the printers bi-directional function.
We recommend that you to backup the WIN.INI and SYSTEM.INI files
before you modify them.
Open the Òwin.iniÓ file using the ÒNotepadÓ application. Look for the
following statement in the [windows] section:
[windows]
run=C:/WINDOWS/SYSTEM/WPSIOMON
Then disable this function, by adding a semicolon at the beginning of the
above sentence as follows:
[windows]
;run=C:/WINDOWS/SYSTEM/WPSIOMON
Look for the following statement in the [spooler] section:
[spooler]
QP.LPT1=wpslbq.dll
Then disable this function, by adding a semicolon at the beginning of the
above sentence as follows:
[spooler]
;QP.LPT1=wpslbq.dll
Then, open the Òsystem.iniÓ file using the ÒNotepadÓ application. Look for
the following statement in the [386Enh] section:
[386Enh]
device=wpscomd.386
device=wpsljvpd.386
:
:
WPSLPT1=1
Then disable this function, by adding a semicolon at the beginning of above
sentences as follows:
[386Enh]
;device=wpscomd.386
;device=wpsljvpd.386
:
:
;WPSLPT1=1 
						

							210CHAPTER NINETEEN
Packing and Shipping the MFC
Whenever you transport the MFC, use the packing materials that came with
your MFC.  Also, follow the steps below to pack the MFC or it may be
damaged, which will void the MFCs warranty.
1Remove the telephone line cord and unplug the MFC from the AC
outlet.
2Open the top cover.
3Hold the drum unit assembly by its handles and remove it.
WARNING
Remove the drum unit and toner cartridge assembly.  Leave the toner
cartridge installed in the drum unit.
Top Cover
Drum Unit
You must restart Windows® to make these modifications effective.
These modifications disable the printer status reporting on your PC;
however, you will be able to use the MFC with no further problems.
Graphics or Text Is Missing When the Document Is Printed
This could be caused by your Display Driver software. Contact your reseller
and inquire about the latest Display Driver software.  Another solution is to
change your Windows
¨ Setup Display selection from the current selection
to the standard VGA or SVGA selection. Contact your reseller or Microsoft
Support if you need help modifying your Windows
¨ Display selection or
installing new Display Driver software. 
						

							211TROUBLESHOOTING AND MAINTENANCE
4Place the drum unit and toner cartridge assembly into the plastic bag
and seal the bag completely.
       
Plastic Bag
Toner Cartridge Drum Unit
5Close the top cover.  Remove the wire extension, document tray, dust
cover, paper tray and handset and pack them.
6Wrap the MFC in the plastic bag and place it in the original carton box
with the original packing material. 
						

							212CHAPTER NINETEEN
7Place documents (manual and printed material) and the drum unit and
toner cartridge assembly into the original carton as shown below:
              
(MFC 4350 only)
(MFC 4650, 
MFC 6650MC
and MFC 7750)
8Close the carton and tape it shut. 
						

							213TROUBLESHOOTING AND MAINTENANCE
Regular Maintenance
You can keep your MFC in optimum condition by cleaning it on a regular
basis. It is a good idea to clean the drum unit during this routine. Avoid
using thinners or other organic solvents to clean the MFC and do not use
water.
Cleaning the Document Scanner
1Unplug the telephone line and then the power cord.
When you reconnect these lines later, make sure to connect the power cord
first, then the telephone line.
2Open the control panel cover.
3  Wipe dirt off the MFC using a slightly damp clean cloth.
4Clean the white bar and the glass cover.
Moisten a small piece of clean soft, lint-free cloth with isopropyl alcohol and
carefully remove dirt from the glass cover and the white bar of the
scanner.
Control Panel
Open the Control
Panel Cover
White Bar
Glass Cover 
						

							214CHAPTER NINETEEN
Cleaning the Printer
WARNING
nDo not use isopropyl alcohol to remove dirt from the control panel.  It
may cause a crack on the panel.
nDo not use isopropyl alcohol to clean the scanner window or the toner
sensor.
nDo not touch the scanner window with your finger.
nHandle the drum unit carefully as it contains toner.  If toner scatters and your
hands or clothes get dirty, immediately wipe or wash it off with cold water.
1Open the top cover.
2Remove the drum unit assembly.
Gears
Toner Sensor
Electrical
Terminal
Scanner Window Sensor  Strip
WARNING
Just after you have used the MFC, some internal parts of the machine are
extremely HOT!  When you open the top cover of the MFC, never touch the
shaded parts as shown in the diagram below.
HOT!
3Wipe the electric terminals with isopropyl alcohol on a cotton swab.
4  Wipe the gears with a clean dry cloth.
5  Gently wipe the scanner window and the toner sensor with a clean soft
dry cloth.  Do not use isoproply alcohol to clean the scanner window or
the toner sensor.
s Inside the MFC 
						

							215TROUBLESHOOTING AND MAINTENANCE
Cleaning the Drum Unit
We recommend you place the drum unit on a drop cloth or large piece of
disposable paper to avoid spilling and scattering toner.
1Turn the drum unit upside down carefully.
2Clean the primary corona wire inside the drum unit by gently sliding the tab
from right to left several times.
3Return the tab to the home position (t mark position) before
reinstalling the drum unit.
Home Position (t)
TabCorona Wire
CAUTION
If you do not position the tab at the home position, printed pages may have
vertical stripes.
4Install the drum unit into the MFC.
See the section ÒReplacing the Drum UnitÓ on page 221.
5Close the top cover.
6Plug in the power cord. 
						

							216CHAPTER NINETEEN
Replacing the Toner Cartridge
The MFC can print approximately 2,200 pages with one toner cartridge.
When the toner cartridge is running low, the display shows TONER LOW.
The MFC is supplied with a starter toner cartridge that must be replaced
after 1,000 pages.  Actual page count will vary depending on your average
document type (i.e. standard letter, detailed graphics).
It is a good idea to keep a new toner cartridge ready for use when you see
the toner low warning.
Discard the used toner cartridge according to local regulations.  If you are
not sure of them, consult Brother Customer Service.  Be sure to seal the
toner cartridge tightly so toner powder does not spill out of the cartridge.
When discarding used toner cartridges, keep them separate from domestic
garbage.
It is recommended that you clean the MFC when you replace the toner
cartridge.
Toner Empty Indicator
When the toner cartridge is running low, the display shows TONER LOW
and the Toner Empty LED on the control panel flashes on and off to indicate
the toner is low.
The Toner Empty LED light stays on and the display shows TONER EMPTY to
indicate that the toner is empty.  Once this indication appears, your MFC will not
resume printing until you have installed a new toner cartridge.
Help/
BroadcastRecord Erase Play
Copy
ResolutionModeTel-index
High
Low
ABC DEF
GH I JKL MNO
Clear Function SetFF/ContTest/Reset
Enlarge Reduce
Print PriorityOn/Off Line
Hold
 665OMC
Hook
Volume
statusstatusVoice
FaxFine
Photo
S.FineFAX
FAX/TEL
0203
04
14 15
16 01
13123
DisplayToner Empty LED