Citizen CL-S700R ユーザーズマニュアル

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Chapter 2 Operating Principles 
2-1.  Operation of Each Mechanism   
CL-S700/CL-S703/CL-S700R
 2-10 
 
2-1-5.  Print Head Up/Down Detection Mechanism 
The component of the print head up/down detection mechanism is as follows: 
(a) SA, Head Up SW 
 
The print head up/down detection mechanism detects the up (open)/down (close) status of the 
head block.   
When the head block is in the up position, the switch lever of the “SA, Head Up SW” is released 
and the switch turns OFF. While, the head block is in the down position, it is pushed by the head 
block and the switch turns ON.   
The CPU on the Main PCB detects up or down position of the head block by sensing the switch 
output of the “SA, Head Up SW”. When the head block is in the up position, 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