3.9.32
LCD Contrast Adjustment Connector (VR1)
3.9.33
LCD Backlight Brightness Adjustment Connector (VR2)
Signal
+3.3V
VCON
GND
Signal
VBR
GND
VR2
3
2
1
Variation Resistor (Recommended: 4.7KΩ , >1/16W)
PIN
1
2
3
PIN
+5V
1
2
3
VCC
ECB-862/862L User's Manual 39
ECB-862/862L
CN23
pin 4