Brother HL-3450CN Service Manual page 154

40 DP CHECK
Each individual color Toner cartridge can be driven.
Procedure
Description of Procedures
1) Press the Reprint button after selecting
Screen (a) "DP CHECK".
2) Using the Back or Set button, select the
desired color and then press the Reprint
button.
3) The selected color toner cartridge starts to
drive. If no error occurs in driving, the
message "GOOD" is displayed on the LCD,
otherwise "FAIL".
Toner cartridge drive will automatically stop
after 60 seconds.
4) Press the - button to stop the DP CHECK
mode.
Press the - button one more time to return to
screen (a).
a)
o
(a) (b)
b)
o
(b) (c)
c)
(c)
o
(c) (d)
d)
(d)
e)
o
(d) (e)
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HL-3450CN SERVICE MANUAL
LCD Message
39 FACTORY MODE
DP CHECK
40 DP CHECK
Y/M/C/K
40 DP CHECK Y
GOOD
40 DP CHECK
Y/M/C/K
FACTORY MODE
DP CHECK