Main Board And Audio Board Block Diagram - Pioneer PDP-425MX Service Manual

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3.2 MAIN BOARD and AUDIO BOARD BLOCK DIAGRAM

Main Board Block Diagram
U7
R.G.B
Hs, Vs
R.G.B
Hs, Vs
Y.C/CVB
S/YUV
Signal
DVI-D
/HDCP
VGA1
VGA2
DVI
S/CVBS
YUV
Audio Board Block Diagram
U900
Pre-Amplifier
L ch
(1) Internal SW
R ch
(2) Volume and
(3) Build in AGC
IIC
5
6
SDRAM U14
U8
Pixelworks
PW2300
Video Decoder
Digital
Output
&
High-Speed
Triple ADC
U34
Digital
EP169
Output
U11
IIC
FAN Control
GPIO
Circuit
U41&U48
To Audio Board
L ch
Audio
Switch
To Audio Board
R ch
U902
L ch
NJW1141
R ch
Tone Control
STBY
Function
Mute
6
7
FLASH
U10
Pixelworks
PW318B
DR. G. B
(1) De-interlacer
(0.29)
(2) Video Enhancement
a. DCTI/DLTI
b. W/B expansion
c. Digital brightness
contrast, hue and
saturation control
(3) Image Scaling
PLE
Signal
DDR SDRAM
U23
Audio Amplifier
TAA2008
(1) Class T Architecture
(2) 8W+8W Output
PDP-425MX
7
8
U19
Transmitter
DS90C384
U5
Receiver
DS90CF388
8
A
B
C
D
E
F
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