Brother HL-2400C Service Manual page 157

45-5 FBV TUNE UP
This mode should be used when image defects attributed to the transfer drum need to be
improved. Adjustment is to adjust the drum cleaner bias voltage against the reference
value 0 (zero) in the range -4 and +4.
Note: Do not perform this mode frequently.
Description of Procedures
1) Press the Continue button after selecting
Screen (a) "NVM TUNE UP".(a)
2) After selecting FBV TUNE UP Code 6, press
the Continue button.
3) The adjustment value can be adjusted in 8
steps between -4 and +4.
After selecting a given number, press the
Continue button.
4) Press the Font button to finish the adjustment
work for FBV.
(b)
a)
(b) (c)
b)
(c)
c)
(c) (d)
d)
V-36
LCD Message
39 FACTORY MODE
NVM TUNE UP
45 NVM TUNE UP
No.=<123456789>
45 FBV TUNE UP
-<432101234>+
45 NVM TUNE UP
No.=<123456789>