Haier HL42B-B Service Manual page 14

9
10
11 ERR
12 BLON
13 I_PWM
14 E_PWM
Notice:
#PIN 13: Analog Dimming Control (Use Pin 13) : 0v-3.3v and Pin 14 must open.
#PIN 14:PWM Dimming Control (Use Pin 14):Pin 13 must open.
#PIN 13(I_PWM) and Pin 14(E_PWM) can not open in same period.
Normal(GND)
Abnormal(Open collector)
BL ON/OFF
Internal PWM Control
External PWM Control
14