Brother HL-4140CN Service Manual page 68

■ Error code 43
Print Unable 43
Turn the power off and then back on again.
ASIC error of the main PCB.
This error does not usually occur in the normal use. The conceivable causes are noise around
the installation site, fluctuation of the power supply voltage, and failures in the software.
<User Check>
- Turn OFF the power switch, and turn it ON again after a while.
Step
1 Main PCB failure
■ Error code 44
K
(
No Toner
Open the Front Cover, then install Toner Cartridge. Black (K)
Error code 45 Y
( )
No Toner
Open the Front Cover, then install Toner Cartridge. Yellow (Y)
Error code 46 M
(
No Toner
Open the Front Cover, then install Toner Cartridge. Magenta (M)
Error code 47 C
(
No Toner
Open the Front Cover, then install Toner Cartridge. Cyan (C)
The toner cartridge of the appropriate color is not installed.
<User Check>
- Install the toner cartridge of the color displayed on the LCD.
Step
1 Toner/New sensor PCB ASSY
failure
2 Engine PCB failure
3 Main PCB failure
Cause
)
)
)
Cause
2-37
Remedy
Replace the main PCB ASSY.
Remedy
Check the sensor performance following
the procedure described in
32". If any problem occurs, replace the
Toner/New sensor PCB ASSY.
Replace the engine PCB ASSY.
Replace the main PCB ASSY.
"Function code
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