Panasonic SA-HT680PL Service Manual page 69

TUNER PACK
FM ANT
1 7
MIXER
RF AMP
5
OSC BUFFER
6 8
+B (FM)
AM IFT
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
24 23 22 21 20 19 18 17 16 15
ALC
AM AM
AM
MIX RM AMP
OSC
BUFFER
AGC
LEVEL
S-CURVE
DET
AM IF AM DET
FM IF
AM/FM
IF
BUFFER
FM
COMP
DET
TUNING
DRIVE
REG
REG
1 2 3 4 5 6 7 8 9 10
+B
X103
1
20
14
13
DO 5 ST/DO
CE 2 CE
C2B
DI 3 DI
I/F
CL 4 CL
8
IC2006
+B C9ZB00000466
VIDEO BUFFER
CLAMP
Y/PY/G 6 CY IN
BIAS
Rch
CB/PB/B 8 CB IN
TUN L
BIAS
CR/PR/R 9 CR IN
FM/AM IF AMP,
DET/AM OSC MIX
/FM MPX
14 13 (LA1833NMNTLM)
CLAMP
Y 4 Y IN
DECODER
PHASE PILOT
DET CANCEL
BIAS
STEREO
SWITCH
C 2 C IN
1
+B
VCO VCC
7
GND1
PILOT
FF FF FF
DET
11 12
+B
Q2028
ZFLAG
MUTING
+B
Q1
PHOTO
INTERRUPTOR
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
69
CY OUT 13 JK2001
13.5MHz
4dB 2dB 75
LPF Y(RED)
6.5MHz CB OUT 12 JK2001
4dB 2dB 75
LPF CB(GREEN)
CR OUT 11 JK2001
6.5MHz
4dB 2dB 75
CR(BLUE)
LPF
6.5MHz Y OUT 14
4dB 2dB 75
LPF
V OUT 15 JK2001
-6dB + 2dB 75
VIDEO OUT
C OUT 16
6.5MHz
4dB 2dB 75
LPF
Q2004
10
GND2 SWITCHING
IC11
C0GAG0000007
MOTOR DRIVE(UP/DOWN)
UP/DOWN
MOTOR
2
DRIVE CONTROL
4
VCC GND
S2
(PLAY)
6
+B
S1
(STOCK)
S4
(OPEN) IC21
C0GAG0000007
MOTOR DRIVE(LOADING)
S5
LOADING
(CHANGE)
MOTOR
2
S3
(BOTTOM) DRIVE CONTROL
4
VCC GND
6
+B
5 44 26 21 4 1 100
IC2018
C2CBJG000578
SYSTEM CONTROL
SA-HT680PL BLOCK DIAGRAM
SA-HT680PL
Y
C
JK2001
S-VIDEO OUT
7
9
8
7
9
8
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