Brother Ppf 3750 Plain Paper Laser Fax Owners Manual

							99TROUBLESHOOTING AND MAINTENANCE
Print Quality
Difficulties
(Print Operations
are Available with
Software Option)
Copy Quality
Difficulties
White Stripes or
Faint lmages
Dark Stripes or Toner Stains
White Spots
Scattering Toner
White page
Black Page
 DIFFICULTY SUGGESTIONS
Vertical streaks appear in Sometimes you may see vertical streaks on your copies.
copies. Either the scanner or the primary corona wire for printing
is dirty.  Clean them both.  (See pages 109 and 111.)
Printouts are too dark or Adjust the print conditions by setting the Print Density light
too light. function.  It has been factory set to the middle position. See
ÒSetting the Print DensityÓ on page 37.
Printed pages contain white You may fix this by wiping the scanner windows with a
stripes. clean soft cloth.  (See ÒCleaning the Document ScannerÓ on p. 109
and ÒCleaning the Drum UnitÓ on page 111.)  If you still see
white stripes or faint images and the display shows CHANGE
DRUM SOON, replace the drum unit with a new one.
Printed pages are stained Clean the fax machines interior and the primary corona wire of the
with toner or have toner cartridge. See ÒRegular MaintenanceÓ and ÒCleaning
vertical stripes. the Drum UnitÓ on pages 109Ð111.  Make sure that the tab
of the corona wire is at the home position.  If after cleaning,
you still see dark stripes or toner stains and the display shows
CHANGE DRUM SOON, replace the drum unit with a new one.
Printed pages have white Make sure that you use paper that meets the specifications. spots
in black text and Rough surface or thick media can cause the problem.  If you
graphic areas.still see white spots and the display shows CHANGE
DRUM SOON, replace the drum unit with a new one.
Toner scatters and stains Adjust the print conditions by setting the Print Density
the printed page. function.  Remove the drum unit and clean the fax machineÕs
interior. See ÒRegular MaintenanceÓ, ÒCleaning the PrinterÓ and
ÒCleaning the Drum UnitÓ on pages 109Ð111. Make sure that you
use paper that meets specifications. See page 16.  If you still have
scattered toner and the display shows CHANGE DRUM SOON,
replace the drum unit with a new one.
The whole page is printed Wipe the electric terminals referring to page 110. Also, do
black. not use heat-sensitive paper as it will cause this problem.
After cleaning, if the printed pages are still black and the
display shows CHANGE DRUM SOON, replace the drum
unit with a new one.
Nothing is printed on the Make sure that the toner cartridge is not empty.  Wipe the
page. electric terminals referring to ÒRegular MaintenanceÓ, ÒCleaning
the PrinterÓ and ÒCleaning the Drum UnitÓ on pages 109Ð111.
Make sure that a torn piece of paper does not remain on the
scanner window. 
						

							100CHAPTER THIRTEEN
Example of Regular Marking
Ghost Images
The drum unit is a consumable item and it is necessary to replace it
periodically.
 




 





DIFFICULTY SUGGESTIONS
Printed pages are marked Markings may disappear by themselves. Try copying
at regular intervals. multiple pages to clear this problem. Markings may occur
if the fax machine has not been used for a long time.  A
possible cause is that the surface of the drum is scratched. You
must then replace the drum unit with a new one.  If the
markings do not disappear, it may be that the drum was
marked or damaged by excessive exposure to light. In this
case, replace the drum unit with a new one.
Printed pages are blurred at the Certain environmental conditions such as humidity, high
center or at either edge. temperatures, etc. may cause this condition to occur.  Make
sure the fax machine is placed on a flat, horizontal surface.
Remove the drum unit with the toner cartridge installed. Try
rocking them from side to side.  You may clear a blurred page
by wiping the scanner windows with a clean soft cloth. (See
ÒRegular MaintenanceÓ, ÒCleaning the PrinterÓ and ÒCleaning
the Drum UnitÓ on pages 109Ð111.)  If a blurred page occurs
after cleaning and the display shows CHANGE DRUM SOON,
replace the drum unit with a new one.
Ghost images appear on the Adjust the print conditions by setting the Print Density
printed page. function, page 37.  Make sure that you use paper that meets the
specifications.  Rough surfaces or thick media can cause a
ghost image.
Blurred Page 
						

							101TROUBLESHOOTING AND MAINTENANCE
Difficulties Setting Up The Optional
Software
Problem Using the HP Pavilion PC and the ÒHP DEMOÓ
Screen Saver
If you select the ÒHP DemoÓ screen saver on your HP Pavilion PC after you
have installed the optional Multi-Function Link Pro software, the
System.ini file is overwritten and you cannot use the Brother fax machine to
print, scan, or for Remote Setup.
If you have used the HP Demo screen saver already, you must edit the
System.ini file as follows:
[boot]
;comm.drv=comm115.drv
comm.drv=brmfcomm.drv
[386Enh]
DEVICE=C:\WINDOWS\SYSTEM\Bi-Di.386
If you do not want to edit the System.ini file, please change the screen saver
to another one and Re-install Multi-Function Link Pro again.
Bi-Directional Parallel Ports (nibble and byte modes)
The fax machine supports both nibble (AT) and byte (Bi-directional) mode
parallel ports. If your PC supports byte mode, scanning and fax reception will be
at a faster speed. To verify or change the parallel port mode, please check your
system BIOS in the CMOS Setup or contact your computer manufacturer for
assistance.
Some older PC models support only nibble mode. Generally, newer models
support both nibble and byte modes. 
						

							102CHAPTER THIRTEEN
Fax Machine 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 Brother printer driver also has a
bi-directional parallel port function. Since Windows
¨ 3.1x 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
¨ 3.1x.  If you install two or more different bi-directional device
drivers into Windows
¨, they might conflict with each other and cause problems.
Please make sure you have installed the Brother printer driver, by executing
SETUP.EXE from your CD-ROM drive, following the instructions on the
diskette 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 in 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 the Brother printer drivers may not work if the
printer drivers for the above models are installed after the installation of the
Brother printer drivers.
In this case, please install the Brother printer driver again or copy the
BI-DI.386 from the CD-ROM to the Windows/System directory.
(NOTE: BI-DI.386 on the CD-ROM is not compressed.) 
						

							103TROUBLESHOOTING AND MAINTENANCE
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 this modification effective.
The modification disables the printer status reporting on your PC; however,
you will be able to use the Brother printer driver with no further problems. 
						

							104CHAPTER THIRTEEN
HP LaserJet 4 Plus:
Please uninstall the Main Status windows by double clicking the Un-install
Status windows in HP LaserJet group.
NEC SuperScript 610/660:
Please remove the NEC SuperScript driver by running the NECDELET.EXE
file in Disk 1 included with NEC printers.
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 have to modify the Òwin.iniÓ and Òsystem.iniÓ files in the Windows¨
directory to turn off the printers bi-directional function.
We recommend that you back up 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 
						

							105TROUBLESHOOTING AND MAINTENANCE
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 the function by adding a semicolon at the beginning of above
sentences as follows:
[386Enh]
;device=wpscomd.386
;device=wpsljvpd.386
:
:
;WPSLPT1=1
You must restart Windows
¨ to make these modifications effective.
The modifications disable the printer status reporting on your PC; however,
you will be able to use the Brother printer driver 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. 
						

							106CHAPTER THIRTEEN
Packing and Shipping the
Fax Machine
Whenever you transport the fax machine, use the packing materials that
came with your machine.  Also, follow the steps below to pack the fax
machine or it may be damaged, which will void the fax machineÕs warranty.
1Remove the line cord and unplug the fax machine 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 
						

							107TROUBLESHOOTING AND MAINTENANCE
4Place the drum unit and toner cartridge assembly into the plastic bag
and seal the bag completely.
           
Plastic
Bag
Drum
Unit
Toner
Cartridge
5Close the top cover.  Remove the wire extension, document tray, dust
cover, paper tray and handset and pack them.
6Wrap the fax machine in the plastic bag and place it in the original
carton with the original packing material. 
						

							108CHAPTER THIRTEEN
7Place documents (manual and printed material) and the drum unit and
toner cartridge assembly into the original carton as shown below:
8Close the carton and tape it shut.