Brother Fax 4100 4750e 5750e Owners Guide

MAKING COPIES   11 - 7
Changing Default Copy Settings
Press Menu and 3 to change default settings for Copy mode. These settings will 
remain until you change them again by pressing Menu. Adjust the  Contrast and 
Quality settings.
By pressing a number, you can adjust copy settings as shown in the following 
chart. Press   or 
 to scroll through the options for each setting. Press Set to 
save your selection. Press Stop/Exit—OR—Press
  to select the next setting 
you want to change.
Press Menu, and 3....

11 - 8   MAKING COPIES
Copy Contrast
You can adjust copy contrast to make copies darker or lighter.
1Press Menu, 3, 2.
2Press  to make a copy lighter—OR—
Press
  to make a copy darker, and then press Set.
3Press Stop/Exit.
Paper Type
You can use the following types of paper for copying. For the best print quality, 
select the type of media that you are most often.
THIN  (16lb - 18.4lb) - For thin paper
PLAIN (18.7lb - 25.3lb) - For ordinary plain paper 
THICK (25.6lb - 32lb) - For heavy weight paper or...

OPTIONAL ACCESSORIES   12 - 1
1212Optional Accessories
Memory Board (For FAX-4750e and FAX-5750e Only)
The memory board is installed on the main controller board inside the machine. 
When you add the optional memory board, it increases the performance for both 
fax and printer operations.
In general, the DIMM must have the following specifications:
Type: 100 pin and 32 bit output
CAS Lantency: 2 or 3
Clock Frequency: 66MHz or more
Capacity: 16 or 32MB
Height: 46mm (1.8 inches) or less
Parity: NONE
DRAM...

12 - 2   OPTIONAL ACCESSORIES
2Remove the screws securing the rear cover and remove the cover.
3Remove the screws securing the access plate and remove the plate.
4Disconnect the connector from the backup battery.
Backup
Battery
Backup Battery 

OPTIONAL ACCESSORIES   12 - 3
5To install the memory board onto the main controller board, plug the attached 
spacer into the connectors of the main controller board.
WARNING
Hold the memory board by its edges. Do not touch the surface of the board.
Make sure the memory board is securely seated on the main controller board.
6Reconnect the connector to the backup battery.
7Reinstall the access plate and the rear cover.
8Reconnect the interface cable, and then plug the power cord into the AC outlet. 

12 - 4   OPTIONAL ACCESSORIES
Paper Cassette #2 (Option for FAX-4100 and FAX-4750e)
You can purchase the Paper Cassette #2 accessory (LT400) to use as a third 
paper source. Cassette #2 holds up to 250 sheets of 20 lb. (75 g/m2) paper.
Network (LAN) Board (Option for FAX-4750e)
When you add the optional Network (LAN) Board (NC-8100h), you can 
connect your machine into the network to use the Internet FAX, Network 
Scanner, Network Printer and Network Management operations.
(See NC-8100h User’s Guide on...

TROUBLESHOOTING AND ROUTINE MAINTENANCE   13 - 1
1313Troubleshooting and 
Routine Maintenance
Troubleshooting
Error Messages
As with any sophisticated office product, errors may sometimes occur. If this 
happens, your machine often identifies the problem and displays an error 
message. The table below explains the most common error messages. 
You can correct most problems by yourself. If you need additional help, call the 
Brother fax-back system.
In USA Only:1-800-521-2846
IMPORTANT
For technical and...

13 - 2   TROUBLESHOOTING AND ROUTINE MAINTENANCE
COOLING DOWNThe temperature of the drum unit or 
toner cartridge is too hot. The 
machine will pause its current print 
job and go into cooling down mode. 
During the cooling down mode, you 
will hear the cooling fan running 
while the display on the machine 
shows COOLING DOWN.You must wait and allow the 
machine to resume printing when it 
is ready.
COVER OPEN
PLS CLOSE COVERThe front cover was not completely 
closed.Close the front cover for the drum...

TROUBLESHOOTING AND ROUTINE MAINTENANCE   13 - 3
PLS OPEN COVERA page, piece of paper, or paper clip 
may be jammed inside the machine.Open the front cover. If you see any 
jammed paper or other item, gently 
pull it out, then close the scanner 
unit. If the error message remains, 
open and close the front cover 
again. If the machine cannot reset 
itself and return to the date and time 
prompt, it will display 
MACHINE ERROR XX. Please 
call Brother Customer Service and 
tell them the Machine Error...

13 - 4   TROUBLESHOOTING AND ROUTINE MAINTENANCE
Document Jam
The originals did not feed properly, or were too long.
1Lift the control panel.
2Carefully pull the document toward 
the front of the machine.
3Close the control panel.
4Press Stop/Exit.
Paper Jam
Before you can clear a paper jam error, you must find out where the paper is 
stuck. See the following three types of paper jams.
WARNING
Do not use force to pull the jammed paper from the paper tray because you may 
damage the machine and cause...