THEORY OF OPERATION
(4)Head-Up Detector
This detector consists of a leaf switch indicating whether the head is closed (in contact with the platen) or open (separated from the platen). The leaf switch is closed when the head is closed; it opens when the head is opened.
+5V
R
Detection signal
Leaf switch
GND
Fig. 2-19 Head-Up Detector
– 31 –
