Detector Circuits - Brother LX-200 Service Manual

5.4 Detector Circuits

These circuits detect the status of the switches, keys and buttons that operate the
machine (Power switch, Cut key, Feed key, Start/Stop button, and dial switches) and
the sensors that determine the film type, document length and width, and cover
open/closed status.
The circuits that detect each switch and sensor are listed below.
In addition, a separate switch to detect the motor initial status is also mounted.
Switch scan circuit
Dial switch circuit
Cover switch circuit
Paper width detector circuit
Paper length detector circuit
Cartridge type detector circuit CSIZE switch
Film type detector circuit
Film feed detector circuit
Input voltage detector circuit
Power switch, Cut key, Feed key, Start/Stop
button, and TRIMMING switch
ON/OFF-R, ON/OFF-L switches
Cover switch
YCA-F switch
P-END switch
ENC sensor
TPS switch
ACVL, ACVH signals
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