Lever Motor Timing Pulse (T.p.) Detection Mechanism - Epson TM-U675 Service Manual

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Lever motor timing pulse (T.P.) detection mechanism

The lever motor T.P. detection mechanism consists of a lever drive motor detector plate and
lever motor T.P. detector on the lever drive motor gear. It detects lever drive motor rotation and
generates the signal, which determines the timing for energizing of the lever coil, which in turn
controls opening/closing of the platen lever and opening/closing of the sub slip feed roller.
Rev.D
Lever drive motor detector plate
Lever drive motor gear
Lever motor T.P. detector
Figure D-19
Printer side
Lever drive motor detector plate
Figure D-20
TM-U675/U675P (with autocutter) Service Manual
Lever drive motor
+5V
When light is emitted
High
When light is
interrupted
Low
GND
GND
Signal level at point A
Product Overview Appendix D-13