Block Diagrams, Test Point Overview, and Waveforms
17
6.
Block Diagram Scaler Board
5V
Power
3
.
3
V,2.5V,1.
8
V,1.2V,1.1V
IR
Headphone
Audio AMP
TDA
8
9
3
2BTW
12V
S
B-01
MT5335PGU
MPEG-1 l
a
yer I/II decoding
A
u
dio ADC
A
u
dio DAC
3
D
su
rro
u
nd proce
ss
ing with
Virt
ua
l
su
rro
u
nd
A
u
tom
a
tic vol
u
me control
A
u
dio I/F
2-D Gr
a
phic
De-interl
a
ce
VADCx4
HDMI In I/F
Digit
a
l TV Demod
u
l
a
tor
An
a
log TV IF Demod
u
l
a
tor
TV
au
dio demod
u
l
a
tor
3
.
3
V,2.5V,1.2V,1.1V
Power
Board
16V
Common Interface Controller
MT
8
295
3
.
3
V,1.
8
V
PCMCIA
5V,
3
.
3
V
D-
S
UB/PC-VGA
S
CART
HDMI 1
HDMI 2
HDMI MUX
TMD
S
251PAGR
5V,
3
.
3
V
Audio R/L of CVB
S
Audio R/L of PC
YPbPr/L/R
S
-Video
Keypad
Channel demodulator
MT51
33
3
.
3
V
TUNER
ENG
3
7E14KF
5V
S
B-04
S
B-05
S
B-1
3
S
B-1
3
S
ub MCU
WT6702F_OG200WT
3
.
3
V
S
B-11
S
B-10
Fla
s
h MX25L
3
205DMI-12G
DDR
S
DRAM
HY5DU121622DTP-D4
3
2.5V
S
B-19
S
B-1
8
S
B-17
S
B-1
3
S
B-0
3
S
B-01
S
B-02
S
B-09
S
B-15
S
B-1
8
S
PIDF OUT
2.5V
S
B-1
8
S
B-14
EARPHONE AMP
S
B-17
I_177
8
0_0
3
0.ep
s
17040
8