Filter
Top Products
Chapter 2 Operating Principles
2-2. Operation of Control Parts
2-21 CL-S700/CL-S703/CL-S700R
(2) Head up sensor
The head up sensor (“SA, Head Up SW”) is used to detect the head position (up or down). This
sensor uses a mechanical micro switch.
When the head block is closed (in the down position), the head block pushes the micro switch
lever and the micro switch turns ON. In this state, pin 174 (HDUSENS) of U1 (CPU) goes
"Low".
When the head block is opened (in the up position), the micro switch turns OFF and pin 174
(HDUSENS) of U1 (CPU) goes "High".
When the head block is opened, the ERROR LED blinks and the LCD displays “ERROR HEAD
OPEN” on the operation panel.
Head Block
Switch OFF
Head Block
[Rear View]
Switch ON
SA, Head Up SW