Brother HL-4200CN Service Manual page 254

Menu
Part/signal name
No.
DUP MOTOR ASSY ON
(REVERSE DOUBLE
DO-8
SPEED)
DRIVE ASSY DEVE ON
DO-a (NORMAL SPEED)
DRIVE ASSY DEVE ON
(HALF SPEED)
DO-b
FUSER DRIVE ASSY ON
(NORMAL SPEED)
DO-d
FUSER DRIVE ASSY ON
(HALF SPEED)
DO-e
OPTION MOTOR ON
DO-10 (NORMAL SPEED)
OPTION MOTOR ON
(HALF SPEED)
DO-11
REAR FAN ON
DO-13
(HIGH SPEED)
REAR FAN ON
DO-14
(LOW SPEED)
FUSER FAN ON
DO-16
(HIGH SPEED)
FUSER FAN ON
DO-17
(LOW SPEED)
DRIVE ASSY MAIN ON
(LOW SPEED)
DO-19
Test method
<WARNING!> <CAUTION!>
Check by hearing and visually that
the motor rotates counterclockwise
in double-speed mode.
<WARNING!> <CAUTION!>
Check by hearing and visually that
the motor rotates in normal mode.
<WARNING!> <CAUTION!>
Check by hearing and visually that
the motor rotates in half-speed
mode.
<WARNING!> <CAUTION!>
Check by hearing and visually that
the motor rotates in normal mode.
<WARNING!> <CAUTION!>
Check by hearing and visually that
the motor rotates in half-speed
mode.
<WARNING!> <CAUTION!>
Check by hearing and visually that
the motor rotates in normal mode.
<WARNING!> <CAUTION!>
Check by hearing and visually that
the motor rotates in half-speed
mode.
Check by hearing and visually that
the fan rotates in high-speed mode.
Check by hearing and visually that
the fan rotates in low-speed mode.
Check by hearing and visually that
the fan rotates in High-speed mode.
Check by hearing and visually that
the fan rotates in Low-speed mode.
<WARNING> <CAUTION>
Check by hearing and visually that
the motor rotates in Low-speed
mode.
V-48
Reference
BSD
2.9.5
2.8.2
2.8.2
2.9.2
2.9.2
2.7.5A
2.7.5B
2.7.5A
2.7.5B
2.9.3
2.9.3
2.9.3
2.9.3
2.4.1