Brother MFC-9330CDW Service Manual

5-66
Confidential
1.4.34 Developing bias voltage correction (Function code 83)
<Function>
This function performs developing bias voltage correction to fix the density of each color toner
when printed color is not correct.
<Operating procedure>
(1) Press the 8 and 3 keys in this order in the initial state of the maintenance mode.
The machine displays "PLS WAIT 83" on the LCD and starts the developing bias voltage
correction.
(2) Upon completion of the developing bias voltage correction, the machine returns to the
initial state of the maintenance mode.
If developing bias voltage correction fails, "ERROR 83" is displayed on the LCD.
Display the error message by pressing the key, and take the following measure that
corresponds to the error message.
* # indicates the toner color (Y, M, or C) of which cartridge became empty.
Note:
Before this function is performed, there is a need that the "1.4.27 Sensitivity adjustment of
density sensor (Function Code 72)" in this chapter has been done more than once. When
performing this maintenance mode 83 after replacing the main PCB ASSY, make sure to
perform the "1.4.27 Sensitivity adjustment of density sensor (Function Code 72)" first.
Error message Measure
FAILED DEVBIAS Remove the error factors with the following operations and
press the Mono Start key to clear the error.
- Re-insert the toner cartridge in the correct position.
- Replace the toner cartridge.
- Replace the drum unit.
- Replace the waste toner box.
- Replace the belt unit.
- Replace the registration mark L/R PCB ASSY.
TONER EMPTY #
*
Replace the empty toner cartridge and press the Mono Start
key to clear the error. After the sensitivity adjustment of the
density sensor (Function code 72) is performed, the
developing bias voltage value is compensated again.
Cover is Open Close the joint cover ASSY.
Replace Toner Replace the black toner cartridge and press the Mono Start
key to clear the error. After the sensitivity adjustment of the
density sensor (Function code 72) is performed, the
developing bias voltage value is compensated again.

Brother MFC-9330CDW Specifications

Print Specifications

print speed black	up to 23 ppm
print speed color	up to 23 ppm
print resolution	up to 600 x 2400 dpi

Copy Specifications

copy speed black	up to 23 cpm
copy speed color	up to 23 cpm
copy resolution	600 x 600 dpi

Scan Specifications

scan resolution optical	1200 x 2400 dpi
scan resolution interpolated	19200 x 19200 dpi
document glass size	8.5” x 11.7”

Fax Specifications

fax modem speed	33.6k bps
fax page memory	up to 500 pages
speed dial locations	200

Paper Handling

auto document feeder capacity	up to 35 pages
paper size maximum	up to 8.5” x 14” (legal)
standard paper capacity	250 sheets

Power and Energy

deep sleep mode power consumption	<2W
automatic duplex printing	Yes
energy star qualified	Yes