Panasonic SC-HT870 Service Manual page 159

TUNER PACK
FM ANT
1 7
MIXER
RF AMP
5
OSC BUFFER
6 8
+B (FM)
24 23
ALC
BUFFER
LEVEL
DET
FM IF
AM IFT
1
PLL FREQUENCY
SYNTHESIZER
(LC7213MDTRM)
16 PHASE DETECTOR REFERENCE
CHARGE PUMP DIVIDER
UNLOCK
DETECTOR
18
SWALLOW COUNTER
1/6,1/17,4 BITS
17
12 BITS
PROGRAMMABLE
DIVIDER
11
UNIVERSAL
COUNTER
SHIFT REGISTER LATCH
15 POWER ON
+B
RESET
19 10 7 12 6 9
+B
POWER
SUPPLY
+B (FM:ON)
(FM)
AM ANT
FM
AM AM
IF AMP
ANT OSC
COIL COIL
AMP
22 21 20 19 18 17 16 15 14
AM AM
DECODER
AM
MIX RM AMP
OSC
PHASE
DET
AGC
S-CURVE
AM IF AM DET
AM/FM
IF
BUFFER
FM
COMP
DET
VCO
TUNING
DRIVE
FF
REG
REG
2 3 4 5 6 7 8 9 10 11
+B
X103
1
20
14
1/2
13
DO 5 ST/DO
CE 2 CE
C2B
DI 3 DI
I/F
CL 4 CL
8
IC2009
+B
C1AB00001486
VIDEO BUFFER
6 IN1
Y/PY/G
OUT 2
4 IN2
1
SW
Q2006
CB/PB/B
AMP
Q2003
MUTING
Q2007
Rch
CR/PR/R
TUN L AMP
Q2005
MUTING
FM/AM IF AMP,
DET/AM OSC MIX
Y
/FM MPX
(LA1833NMNTLM)
13
PILOT
CANCEL
C
STEREO
SWITCH
+B
PILOT
FF FF
DET
Q1001
AMP
12
+B
IC2020
C1BB00000715
RDS DEMODULATOR
2 15
MPX IN RD CL
14
RD DA
74 73
Q2028
44
ZFLAG
MUTING DVD MUTE
DVD CLK 37
DVD CLK
DVD CMD 35
DVD CMD
DVD STAT 36
DVD STAT
ST/DO 28
TUN DO
DI 30
TUN DI
SD 27
TUN SD
CE 31
TUN CE
CL 29
TUN CLK
IC2006
C9ZB00000431
VIDEO DRIVE
BIAS
150K
12 CY IN 13.5MHz
4dB CY OUT 25
LPF 2dB 75
24
BIAS
CY SAG
150K
14 CB IN
13.5MHz
4dB
CB OUT 22
LPF
2dB 75
21
BIAS
CB SAG
150K
16 CR IN 13.5MHz
4dB CR OUT 19
LPF 2dB 75
18
BIAS
150K CR SAG
6 Y IN
13.5MHz
4dB Y OUT 28
LPF 2dB
75
27
Y SAG
+ V OUT 31
2dB 75
30
BIAS
V SAG
150K
2 C IN 13.5MHz C OUT 33
4dB 2dB 75
LPF
17,20,23,
1
VCC1 26,29,32
GND2
Q2004
34
VCC2
SWITCHING
8,10
GND
IC1001
C9ZB00000432
VIDEO DRIVE
BIAS
150K
12 CY IN 13.5MHz
4dB CY OUT 25
LPF
2dB 75
24
BIAS
CY SAG
150K
14 CB IN
13.5MHz
4dB CB OUT 22
LPF 2dB 75
21
BIAS
CB SAG
150K
16 CR IN 13.5MHz
4dB CR OUT 19
LPF 2dB 75
18
BIAS
CR SAG
150K
6 Y IN 13.5MHz
4dB Y OUT 28
LPF
2dB 75
27
Y SAG
+ V OUT 31
2dB 75
30
BIAS
V SAG
150K
2 C IN 13.5MHz C OUT 33
4dB 2dB 75
LPF
15
13
MUTE 2 CLP
Q1010
+B REGULATOR
46
IC2018
C2CBHG000139
SYSTEM CONTROL
SA-HT870E,EB,EG BLOCK DIAGRAM
JK2001
Y(RED)
JK2001
CB(GREEN)
JK2001
CR(BLUE)
JK2001
VIDEO OUT
Y
C
JK2001
S-VIDEO OUT
JK1001
21PIN AV JACK
(MONITOR OUT)
11
GREEN I/O
7
BLUE I/O
19
OUT
IC1003
C1AB00001731
VIDEO BUFFER
6 IN1
OUT 2
15
4 IN2 RED I/O
1
SW
8
FUNK SW
16
BLK I/O
Q1007
D1001
SWITCH
Q1006
SWITCH
Q1005
IC1002
SWITCH
XN0460100L
Q1004
INVERTER INVERTER
SWITCH SWITCH
38 45