Panasonic SA-HT885WGC Service Manual page 55

TUNER PACK
FM ANT
1 7
MIXER
RF AMP
5
OSC BUFFER
6 8
+B (FM)
24 23
ALC
AM
OSC
BUFFER
LEVEL
DET
FM IF
AM IFT
1 2
PLL FREQUENCY
SYNTHESIZER
(LC7213MDTRM)
16
PHASE DETECTOR REFERENCE
CHARGE PUMP DIVIDER
UNLOCK
DETECTOR
18 SWALLOW COUNTER
1/2
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
22 21 20 19 18 17 16 15 14 13
AM AM
DECODER
MIX RM AMP
PHASE
DET
AGC
S-CURVE
STEREO
SWITCH
AM IF AM DET
AM/FM
IF
BUFFER
FM
COMP
DET
VCO
TUNING
DRIVE
FF FF
REG
REG
3 4 5 6 7 8 9 10 11
+B
+B
X103
1
20
14
13
DO 5 ST/DO
CE 2 CE
C2B
DI 3 DI
I/F
CL 4 CL
8
IC2006
C9ZB00000498
VIDEO DRIVE
+B
Y/PY/G 6
CB/PB/B 8
Rch
CR/PR/R 9
TUN L
FM/AM IF AMP,
DET/AM OSC MIX
Y 4
/FM MPX
(LA1833NMNTLM)
PILOT
CANCEL
C 2
5
1
+B
7
PILOT
FF
DET
12
Q2028 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
NC
CL 29
TUN CLK
55
BIAS
150K
CY IN
13.5MHz
4dB CY OUT 13 JK2001
LPF 2dB 75
Y(RED)
BIAS
150K
CB IN 13.5MHz
4dB CB OUT 12 JK2001
LPF
2dB 75
CB(GREEN)
BIAS
150K
CR IN 13.5MHz
4dB CR OUT 11 JK2001
LPF 2dB 75
CR(BLUE)
BIAS
150K
Y IN 13.5MHz
4dB Y OUT 14
LPF 2dB 75
+ V OUT 15 JK2001
2dB 75
VIDEO OUT
BIAS
150K
C IN 13.5MHz C OUT 16 C
4dB 2dB 75
LPF
VCC1 10
GND2
VCC2
GND1
IC2018
C2CBJG000672
SYSTEM CONTROL
SA-HT885WGC/GS BLOCK DIAGRAM
SA-HT885WGC / SA-HT885WGS
Y
JK2001
S-VIDEO OUT
Q2004
SWITCHING
38