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1
3. BLOCK DIAGRAM
3.1 OVEALL BLOCK DIAGRAM
Main Board Assy (M/B)
A
Detecting sync
of input signal
Q4,Q30,Q28,
Q46
Input
composite
signal
B
Input S-
video
Input
component
s Y,Cb,Cr
Input1
C
RGB
Input2
RGB
Detecting sync
of input signal
Q23,Q31,U49
(LM393)
D
DVI-D ( only Digital Signal ) /HDCP
Input DVI
Digital Visual Interface
Input
Selector IC
Audio 1
E
U41,U42
Input
(MAX4581)
Audio 2
Input
Audio 3
F
RS232C
16
1
2
Detecting sync
Detecting sync
of input signal
of input signal
Q5,Q27,Q26,
Q2,Q35,Q33,
Q43
Q36
- 3DY/Csep
- chromaticity
- internal A/D
- maximum 170Mhz
U8 (PW2300)
Video Decoder &
High-Speed Triple
ADC
Selector
IC
U46,U38
(3257)
Detecting sync
of input signal
Q24,Q37,U50
(LM393)
SDA
SCL
2
(I
14
Electrical volume and
(L)
30
Tone control IC U900
(NJW1141)
(1) Internal SW
(2) Volume and tone
control
1
(R)
(3) Built in AGC
Function
232C interface
U1(MAX232)
2
3
SDRAM
Flash Rom
Memory
U7 16M
Firmware,OSD
U14
for automatic power off control
signal decoder
48bit
24bit
U39 (MST9883)
A/D 110MHz
DVI Receiver
R,G,B each
U34(EP169)
8bit (total 24 bit)
Audio Board Assy
C)
13
21(L)
30
Digital Power
Amplifier IC U902
2
10(R)
(TAA2008)
(1) Class T
5
Architecture
STBY
(2) 8W+8W
31
Mute
to U10
PDP-505MX
3
4
SDRAM
for
128M DDR
U23
ALRM
- I/P Conversion
LVPS signal
- Scaling
for ABL control
- 2 screen
Display port
processing
IR signal
- System control
LED
U10(PW318B)
FAN alert, THERM
SCL/SD A
(1) De-interlacer
(2) Video Enhancement
FAN PWM
a.DCTI/DLTi
b.W/B expansion
c.Digital brightness
P-ON
contrast,hue and
saturation cintrol
(3) Image Scaling
50inchi
42inch
Thermal sensor A
Thermal sensor B
Thermal sensor C
+12 VDD
17
15
(L)
13
SP
OUT
12
BTL
(R)
10
4 7
8 24
4
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