JUKI AMS-221EN Series Engineer's Manual page 180

8) IP-420 Panel Board
The color LCD driver circuit, backlight power source, CPU, memories, etc., are loaded for the management of
inputs, manufacturing, and others.
VR2:
Variable resistor for contrast adjustment
VR1:
Variable resistor for backlight adjustment
CN112: Media socket
SW3:
Media detector switch (loaded on rear side)
CN101:
Switch connector for product management
CN100:
Connector for main body connection
SW2: DIP SW2
<Normal setting state>
1-1: OFF Disabling switch for the
media detector switch
1-2: OFF (* Always used in OFF position)
CN113: USB connector (host side)
CN113: USB connector (function side)
SW1: DIPSW 1 (for production check)
<Normal setting state>
1-1: ON
1-2: ON
1-3: OFF
1-4: OFF
(Caution) 2. Do not change the settings normally.
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CN118: Connector for LCD
BZ-1: Buzzer
CN109: Connector for touch panel
LD1: Status display LED
CN120: Connector for LCD backlight
BT1: Backup battery
CN122: External power terminal (DC: +12V)