- 74 -
TUNER BOARD
IC201
VIF/SIF
<LA75501>
X202
SAW-F
PRE-
AMP.
X203
SAW-F
VIF
SIF
IC3400
NICAM
DECODER
<TDA9875>
IC8504
TV CPU
IC202
AFC
IC8502
EEPROM
IIC_SCL/SDA
IIC_SCL/SDA
IF
AFT
NTSC=H
RF AGC MUTE
TV_CV
TV_CV
SIF
TV_L/R
H/V_SYNC
OSD_RGB/BLK
CLK/DATA
_IN/OUT
K11D K1D
K11E K1E
K1B
K1A
CPU BOARD
MAIN
BOARD
"K8Z"
ANT
A201
TUNER
OFF=NTSC
ON=BG/I/DK
RF-AGC
TP-A
ON=NTSC
OFF=BG/I/DK
VR201
TP-VCO
T202
4MHz
8MHz
24.576MHz
VR202
TP-V
SIF SYSTEM SW
SIF
GND
GND
OPEN
OPEN
GND
OPEN
GND
OPEN
SIF SYSTEM SW
13pin 14pin
B/G
I
D/K
M/N
AV REAR
BOARD
"K20R"
TB
8
2
8
60,61
IF Freq. SW
220K=38.0MHz
OPEN=38.9MHz
TRAP
6.0MHz
43,44
32,34
4
13
30
14,15
29
1,2
R/C
36-38
10
39-42
6
4
16
13,14
17
28
23,24
20
10
15
2
4,5
1
4,5
1
11
4
1
ON=MUTE
●
TV signal processing circuit
Chassis Block Diagrams
INPUT_4
DVI-D
IC301
SCAN
CONVERTER,
SYSTEM
CONTROL
<PW172A>
IC2201
A/D CONVERTER,
DVI RECEIVER
<AD9882>
IC8161
EEPROM
(HDCP)
IC1803
OUTPUT
EXPANDER
H
L
H
L
H
L
H
L
H
L
H
L
DDC_SW1
DDC_SW2
DDC_SW1
DDC_SW2
IC8111
EEPROM
(PC)
SCL_PC
SDA_PC
IC8131
EEPROM
(AV)
SCL_AV
SDA_AV
DDC_SCL
DDC_SDA
RX0+
RX0-
RX1+
RX1-
RX2+
RX2-
RXC+
RXC-
DDC_CLK1
DDC_DAT1
DDC_CLK2
DDC_DAT2
IC8166
IC8101
IC8121
MCL
MDA
D
VI RECEIVER
HDCP
DIGITAL
INTERFACE
RGB_OUT
DATACK,DE
HSYNC,
VSYNC
DDC_SW1
DDC_SW2
19
18
●
Digital RGB signal processing circuit
GB OUT HSYN
A/D C
DVI
C2201
ONVER
RECEI
ER,
ER
C8166
●
TV
V sign
V
l pro
ocessing circuit