Brother HL-4040CN Service Manual page 48

Error code C0(K)
Cartridge Error
Put the Black (K) Toner Cartridge back in.
Identification failure for a new toner cartridge (K)
Error code C1(Y)
Cartridge Error
Put the Yellow (Y) Toner Cartridge back in.
Identification failure for a new toner cartridge (Y)
Error code C2(M)
Cartridge Error
Put the Magenta (M) Toner Cartridge back in.
Identification failure for a new toner cartridge (M)
Error code C3(C)
Cartridge Error
Put the Cyan (C) Toner Cartridge back in.
Identification failure for a new toner cartridge (C)
User Check
- Install the toner cartridges into the machine properly.
Step
1 Power off or front cover
opened while detecting a new
toner cartridge
Cause
Reset the developing bias voltage and develop
roller counter. (Refer to
Counter Reset Function"
1-31
Remedy
"2.2 Develop Roller
in Chapter 5.)
Confidential