Mainboard; Function Description; Connector De¿Nition - Haier 55DA5550 Service Manual

Service Manual
Model No.: 55DA5550

4-2. Mainboard

4-2-1. Function Description

Process signal which incept from exterior equipment then translate into signal that panel can
display.
4-2-2. Connector definition
IR & Key Interface
CN6
Pin number
GND
1
2 K7
3 K6
4 K5
5 K4
6 K3
7 K2
8 K1
9 K0
10 GND
11 IR
12 GRE
13 RED
14 5V
14
Signal name
LED Backlight control
interface CN2
Pin number Signal name
GND
1
GND
2
ADJ
3
BLON
4
12V
5
12V
6
Speaker connector CN20
Pin number Signal name
ROUT+
1
2 ROUT-
3 LOUT-
4 LOUT+