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Brother MFC-7450 Service Manual

Brother MFC-7450
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1-7
Confidential
2.2 Error Code Cause and Remedy
2.2.1 Recoverable User Check Errors
These errors are recoverable by following the message indicated on the LCD or following the
items indicated in User Check
.
Error code 67
The toner of the toner cartridge is low. (The toner sensor delects the nearly empty.)
Error code 75
The machine is cooling down inside for protection.
The machine indicates "Cooling Down" in one of the conditions below.
(1) The temperature inside the machine is too high.
(2) Both ends of the heat roller are at different temperatures.
(3) The paper media is replaced with different Paper size media.
2.2.2 Service Call Error
Check the User Check items first. If the same problem occurs follow each procedure in the
order of the number described in the Step column in the table below.
Error code 50
Replacement time of the drum unit. (The drum counter reached the upper limit.)
Toner Low
Prepare New Toner Cartridge
User Check
Prepare a new toner cartridge. If the toner is empty, Replace it.
Cooling Down
Wait for a while
User Check
After having passed for a while with having turned the power supply on.
Drum End Soon
User Check
Replace the drum unit with a new one.
Step Cause Remedy
1 Main PCB failure Replace the main PCB ASSY.

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Brother MFC-7450 Specifications

General IconGeneral
BrandBrother
ModelMFC-7450
CategoryAll in One Printer
LanguageEnglish

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