Epson AcuLaser C8500, Service Manual

Page: 546 / 570

EPSON AcuLaser C8500 Revision C
APPENDIX Wiring Diagrams and Signal Information 7-44
†
PROCESS MOTOR ASSY description.
„
Motor type: Permanent magnet magnetic field DC servomotor
„
Number of poles: 3-phase, 8-poles
„
Motor control speed: 1735.358rpm ± 0.5% (standard speed),
867.679rpm ± 0.5% (half speed)
578.453rpm ± 0.5% (1/3 speed)
„
Direction of rotation: Counterclockwise direction
(as viewed from rear of printer)
„
Rotation fault detection: Detects abnormality when a variation in control
speed of 6.25% or greater occurs.
†
P/H MOTOR ASSY description.
„
Motor type: Permanent magnet magnetic field DC servomotor
„
Number of poles: 3-phase, 8- poles
„
Motor control speed: 1667rpm ± 0.5% (standard speed), 833.5rpm ±
0.5% (half speed) 555.667rpm (1/3 speed)
„
Direction of rotation: CCounterclockwise direction (as viewed from rear
of printer)
„
Rotation fault detection: Detects abnormality when a variation in control
speed of 6.25% or greater occurs. (P/H
MOT FAIL signal is “High”.)
†
FUSER MOTOR ASSY description.
„
Motor type: Permanent magnet magnetic field DC servomotor
„
Motor control speed: 1667rpm ± 0.5% (standard speed) 833.5rpm ±
0.5% (half speed)
555.667rpm ± (1/3 speed)
„
Direction of rotation: Counterclockwise direction
(as viewed from rear of printer)
„
Rotation fault detection: Detects abnormality when a variation in control
speed of 6.25% or greater occurs. (FUSER
FAIL signal is “High”.)
†
BTR CAM SOLENOID coil resistance: 220 ± 10% (20
o
C )
Table 7-12. Signal Description - § § § § 6
Signal line Description
TR0-M SENSED(L) 5VDC
TR mark detection signal for IBT belt ASSY issued by
the TR0 SENSOR.
P/H MOT FAIL(H) 5VDC
Fail detection signal for P/H MOTOR ASSY. (High:
Abnormal, Low: Normal)
FUSER FAIL(H) 5VDC
Fail detection signal for FUSER MOTOR ASSY. (High:
Abnormal, Low: Normal)
MOT ON(L) 24VDC
On/off control signal for P/H MOTOR ASSY and
FUSER MOTOR ASSY.
MOT CLOCK
Clock output signal for P/H MOTOR ASSY and FUSER
MOTOR ASSY.
PROCESS MOT CLOCK Clock output signal for PROCESS MOTOR.
PROCESS MOT ON(L)
24VDC
On/off control signal for PROCESS MOTOR.
PROCESS MOT FAIL(H)
24VDC
Fail detection signal for PROCESS MOTOR.