Service manual

SERVICE MANUAL LS07 chassis
14
 Self-suitable black level extend control
 Skin color correction, green intensity ,blue extend
 Noise measurement and reduced noise process founction
 Line Width Control (LWC)
TDA9178 PIN DESCRIPTION:
Pin Pin name Function
1
sandcastle input
sandcastle input
2
not connected
Grounding
3
ADC input 1
A/D convertor input 1
4
ADC input 2
A/D convertor input 2
5
ADC input 3
A/D convertor input 3
6
luminance input
Y input
7
address selection input
I2C address choose input port
8
U signal input
U input
9
V signal input
V input
10
test pin
Grounding
11
serial clock input (I2C-bus)
I2C bus clock signal
12
not connected
Not connected
13
not connected
Not connected
14
serial data input/output
(I
2C-bus)
I2C bus data signal
15
decoupling digital supply
connect decouple capacitor external
16
V signal output
V signal output
17
U signal output
U signal output
18
ground
Ground
19
luminance output
Y signal input
20
supply voltage
Supply power
21
SCAVEM output
Scan velocity modulate output
23
not connected
Grounding
24
not connected
Grounding
TDA9178 inside block diagram: