ER-A220 (serv.man2) - Sharp ECR Service Manual (repair manual). Page 14

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13. SHORT PIN setting
The ER-A220 has two SHORT PIN settings.
SHORT PIN No.
FUNCTION
DEFAULT
SP1
Switching between Normal mode/IPL mode
Normal mode
SP2
Switching RS232C No.9 pin and Cl/+5V
Cl signal
SP1 : Normal mode / IPL mode
VCC
SP1
Normal mode
IPL mode
SP2 : +5V / CI
VCC
/C
I
+5V
CI
VCC
/C
I
VCC
SP1
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