Konica Minolta PagePro 1390 MF - Manual (Page 113)

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