NEC NEFAX 671, Service Manual

Page: 265 / 323

T-3
(4) Motors
Step Check Result Action
1
Is the LOCK signal of the Controller/Mechanical Con-
trol Board HIGH when this machine is in the standby
state?
NO
Replace the Con-
troller/Mechanical
Control Board.
Replace the motor.
2
Does the REM signal of the Controller/Mechanical
Control Board go from HIGH to LOW when the motor
is energized?
YES Replace the motor.
NO
Replace the Con-
troller/Mechanical
Control Board.
Step Check Result Action
1
Does the input signal to the Controller/Mechanical
Control Board go from HIGH to LOW when the motor
is energized? (The input signal varies depending on
the direction of rotation.)
YES Replace the motor.
NO
Replace the Con-
troller/Mechanical
Control Board.
4025T526AA
GND
REM
LOCK
2
1
3
4025T525AA