4-2-1. Function Description:
Main Board
Process signal which incept from exterior equipment then translate into signal that panel can display.
4-2-2. Connector de
fi
nition
Main board connector
CNB4
CNB3
Pin number Signal name Pin number
Signal name
1
+5V
1
GND
2
IR
2
KEY1
3
RED
3
KEY2
4
GREEN
5
GND
J1
Pin number Signal name
1
+5V
2
GND
3
RX
4
TX
CN28
CON33
Pin number Signal name Pin number
Signal name
1
PW_ON
1
R+
2
GND
2
R-
3
GND
3
L-
4
ADJ
4
L+
5
PB-ON
6
+12V
7
+12V
Notes:
CNB4:Remote Control connector ; to A Board
CNB3:Keypad connector ; to D Board
J1:Upgrade connector
CN28:Driver connector ; to C Board
CON33:Speaker connector ; to Speaker
CN29:LVDS connector ; to Panel
CN29
Pin number
Signal name
1
VDD
2
VDD
3
VDD
4
GND
5
GND
6
GND
7
RXO0-
8
RXO0+
9
RXO1-
10
RXO1+
11
RXO2-
12
RXO2+
13
GND
14
GND
15
RXOC-
16
RXOC+
17
RXO3-
18
RXO3+
19
RXE0-
20
RXE0+
21
RXE1-
22
RXE1+
23
RXE2-
24
RXE2+
25
GND
26
GND
27
RXEC-
28
RXEC+
29
RXE3-
30
RXE3+
31
GND
32
GND
Service Manual
13
HBTV-22D02FD
