Epson AcuLaser C8500 Service Manual page 544

EPSON AcuLaser C8500
Table 7-9. Signal Description - § § § § 5
Signal line
ROTARY MOTOR
Hold current control signal of ROTARY MOTOR ASSY.
HOLD(L) 5VDC
ROTARY MOTOR ON(L)
Drive power on/off signal for ROTARY MOTOR ASSY.
5VDC
ROTARY MOTOR CLOCK Clock signal for ROTARY MOTOR ASSY.
A, /A, B, /B Excitation signal for ROTARY MOTOR ASSY.
APPENDIX
Description
Wiring Diagrams and Signal Information
ROTARY MOTOR ASSY description.
Motor type: Hybrid stepping motor
Direction of rotation:Clockwise direction (as viewed from rear of
printer)
Step angle:1.8° ° ° ° ± 0.18° ° ° °
Winding resistance:0.9 - 0.95 ± 10% (25
Excitation sequence : See the following table.
Table 7-10. Excitation Sequence
Steps (2-phase excitation)
Phase
1 2 3
Phase B *
/B * *
A * *
Phase/A *
Rotation/hold according to signal
Table 7-11. Rotation/Hold According to Signal
ROTARY MOTOR ROTARY MOTOR
ON(L) 5VDC HOLD(L) 5VDC
Low High
Low Low
High Low or High
Revision C
o o o o
C C C C )
4 5 6 7 8
* * *
* *
* *
* * *
Status
ROTARY MOTOR ASSY ready
for rotation. (Actual rotation is in
accordance with ROTARY
MOTOR clock.)
ROTARY MOTOR ASSY on hold.
ROTARY MOTOR ASSY neither
turns nor on hold.
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