Brother MFC-9320CW Service Manual page 135

■ Error code FA (K), FB (C), FC (M), FD (Y)
No Toner
Open the Top Cover, then install Toner Cartridge. Black (K)
No Toner
Open the Top Cover, then install Toner Cartridge. Cyan (C)
No Toner
Open the Top Cover, then install Toner Cartridge. Magenta (M)
No Toner
Open the Top Cover, then install Toner Cartridge. Yellow (Y)
The drum unit is not installed in the machine body of the product.
(No conduction on the drum electrode)
<User Check>
- Check if the drum unit of the appropriate color is installed in the machine body of the product.
Step
1 Bend of electrode contact of
main body
2 Dirt on electrodes of main body
3 HVPS control PCB failure
4 High-voltage power supply PCB
failure
5 Engine PCB failure
Cause
3-54
Remedy
Correct the bend of the electrode contact
of the main body.
Clean the electrodes of the main body.
(Refer to Fig. 3-6 (P3-33))
Replace the HVPS control PCB ASSY.
Replace the high-voltage power supply
PCB ASSY.
Replace the engine PCB ASSY.
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