Brother HLL3290CDW Service Manual page 103

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Error code 1003
The registration mark sensor R is dirty and cannot normally receive reflected light.
<User Check>
• Clean the dirt on the belt unit or replace the belt unit.
• Replace the waste toner box.
Step
Dirt on the registration mark
1
sensor R
2 Dirt by toner inside the machine
Registration mark sensor R PCB
3
failure
4 Main PCB failure
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Error code 1004
The registration mark sensor L is dirty and cannot normally receive reflected light.
<User Check>
• Clean the dirt on the belt unit or replace the belt unit.
• Replace the waste toner box.
Step
Dirt on the registration mark
1
sensor L
2 Dirt by toner inside the machine
Registration mark sensor L PCB
3
failure
4 Main PCB failure
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Error code 1400
Condensation occurred in the machine.
<User Check>
• Open the top and back covers and leave them for 30 minutes or more with the power ON.
After that, close the top and back covers and turn OFF and ON the power switch.
Step
1 Main PCB failure
Cause
Cause
Cause
2-67
Remedy
Clean the registration mark sensor R part
of the registration mark sensor R PCB.
Clean inside of the machine.
Replace the registration mark sensor R
PCB.
Replace the main PCB.
Remedy
Clean the registration mark sensor L part
of the registration mark sensor L PCB.
Clean inside of the machine.
Replace the registration mark sensor L
PCB.
Replace the main PCB.
Remedy
Replace the main PCB.
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