Brother Mfc 5100c Multifunction Owners Manual

TROUBLESHOOTING AND ROUTINE MAINTENANCE   19 - 8
Transmission Verification Report 
says “Result:NG”There is probably temporary noise or static on the line. Try sending the fax 
again. If you send a PC FAX message and get “Result:NG” on the 
Transmission Verification Report, your MFC may be out of memory. To 
gain extra memory, you can turn off Fax Storage (See page 8-2), print fax 
message in memory (See page 5-4) or cancel a delayed fax or polling job 
(See page 5-6). If the problem continues, call the...

19 - 9   TROUBLESHOOTING AND ROUTINE MAINTENANCE
How to Improve Print Quality
Cleaning the Print Heads
Clean the print head if you get a horizontal line in the text or graphics on your 
printed pages. There are two print heads; each contains two print cartridges. You 
can clean either black and cyan, yellow and magenta or all four colors by 
pressing Ink.
Caution
Do NOT clean the print head by touching it with your hand or a cloth.
1Press Ink. 
2Press 1 to choose 1.CLEANING.
3Press   to choose the color...

TROUBLESHOOTING AND ROUTINE MAINTENANCE   19 - 10
Print Quality Check
If the print quality is not satisfactory, you can print a Print Quality Check Sheet 
to help you identify settings you may need to change.
1Press Menu/Set, 4.
2Press Black Fax Start. 
The MFC begins printing the Print Quality Check Sheet.
The LCD shows:
3Check the sheet to see if the quality and alignment are OK by following STEPs 
A and B.
STEP A: Color Block Quality Check
The LCD shows:
Check the quality of the four color blocks in...

19 - 11   TROUBLESHOOTING AND ROUTINE MAINTENANCE
STEP B: Alignment Check
The LCD shows:
Check 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 
1 (YES) to finish STEP B––OR––
If another test print number is a better match for either 600 DPI or 1200 DPI, 
press 
2 (NO) to select it.
For 600 DPI, press the number of the test 
print that most closely matches the 
number 0 sample...

TROUBLESHOOTING AND ROUTINE MAINTENANCE   19 - 12
If you still see missing ink in this Print Quality Check Sheet, repeat the cleaning and 
test print procedures at least five times.  If ink is still missing after the fifth cleaning 
and test print, replace the ink cartridge for the clogged color. (Perhaps the ink cartridge 
was in your MFC over six months or the expiration date written on the cartridge 
package has passed. Or, the ink may not have been stored properly before use.)
After replacing the ink...

19 - 13   TROUBLESHOOTING AND ROUTINE MAINTENANCE
3Unplug the MFC from the telephone wall socket.
4Unplug the MFC from the AC outlet.
5Unplug the Parallel cable or USB cable from the MFC.
6Remove the telephone line cord, and place them in original packing materials or 
protective wrapping.
7Wrap the MFC in the plastic bag.
8Place the MFC in the 
original carton with the 
original packing material.  

TROUBLESHOOTING AND ROUTINE MAINTENANCE   19 - 14
9Pack additional parts 
(cord and printed 
materials) in the carton. 
DO NOT pack the used 
ink cartridges.
10Close the carton.
NoteIf you are returning the MFC to Brother as part of the Brother Exchange 
Service, pack only the MFC. Keep all separate parts to use with your 
“Exchange” machine. 

19 - 15   TROUBLESHOOTING AND ROUTINE MAINTENANCE
Routine Maintenance
Cleaning the Scanner
Unplug the MFC and lift the document cover. Clean the scanner glass and the 
white film with isopropyl alcohol on a lint-free cloth.
Open the ADF cover. Clean the white bar and the glass strip under the bar with 
isopropyl alcohol on a lint-free cloth. 
Document
Cover
White Film
White Bar
Glass Strip 

TROUBLESHOOTING AND ROUTINE MAINTENANCE   19 - 16
Cleaning the MFC Printer Platen
WARNING
Be careful not to touch the paper feed star wheels and flat cable, and encode film.
Be sure to unplug the MFC from the AC power outlet before cleaning the printer 
platen.
To clean your MFC printer platen, wipe it with a lint free cloth that is dry.
Replacing the Ink Cartridges
Your MFC is equipped with an ink dot counter that automatically monitors the 
ink level in each color cartridge. When the counter detects...

19 - 17   TROUBLESHOOTING AND ROUTINE MAINTENANCE
5Press the appropriate colored ink cartridge cover to open it, and then remove the 
ink cartridge.
6Open the new ink cartridge bag for the color shown on the LCD, and then take 
out the ink cartridge.
7Hold the new ink 
cartridge as shown in 
the illustration, and 
then peel the sealing 
tape from the side of 
the ink cartridge. 
Carefully peel the tape 
in the direction away 
from you.
8Each color has its own correct position. Insert the new ink...