Main Circuit - Panasonic SA-AK66 Service Manual

SCHEMATIC DIAGRAM - 4

MAIN CIRCUIT

C441
1000P
R401
LCH
10K
AUX1
R201
RCH
10K
JK201
2B
TO
RCH
R395
TUNER
CE
CIRCUIT 4.7K
LCH
(2A) ON
PLLDA
SCHEMATIC
DO/ST
DIAGRAM-3
PLLCLK
TO GND1
TUNER +15V
R396
SQCK/ST/DO
CIRCUIT DO/ST
10K
(1A) ON
SD
R479
SCHEMATIC
7.5V
10
DIAGRAM-3
1B
D313
UDZSTE177R5B
PBL
10
PBR
9
TO
8
DECK
RECL
7
CIRCUIT
RECR
6
(H1001/
+15V
5
W1001) ON
DGND
4
SCHEMATIC
MO10V
3
DIAGRAM-10
PGND
2
1
CN204
R412
LCH
2.2K
CENTER
SPEAKERS
R212
2.2K
RCH
LCH
R414
2.2K
SURROUND
R214
2.2K
RCH
CCH
R435
2.2K
R235
S.WOOFER
2.2K
JK202
R451
10K
1
2
CHG_AD2
R452 12K
3
R453 22K
4
R454 220
TO 5
CD LOADING 6
CIRCUIT 7
(CN1) ON 8
R455 12K
SCHEMATIC 9
CHG_AD1
R456
DIAGRAM-12 10
22K
11
12
13
14
CHG_CCW
CN205
CHG_HALF
Q304
2SB621ARSTA
SUPPLY SWITCH
(CD PLUNGER)
Q305
KRC102STA
SWITCH FOR PLUNGER
: +B SIGNAL LINE
: +B SIGNAL LINE
10 12 13 14
9 11 15
IC301
8 7 6 5 4 3 2
R205
C206
1K C406
C408
R405
C208 50V2.2
1K
PLLCE1
C301 16V10
R407
R301 100K
1.5K
PLLDA
R302 100K
PLLCLK C409 16V10
R207
C209 16V10
1.5K
C302 0.1
C303 0.047
+9.0V
R211
R411
220K 220K
C305 0.047
C306 4700P
C307 50V0.33
LTIN
RTIN
SLIN
SRIN
CIN
SWIN
Q304
VREF+
SW5V
SW2
SW1
Q305
VREF+
CHG_CW
: FM/AM SIGNAL LINE : AUX SIGNAL LINE
: MAIN SIGNAL LINE : CD SIGNAL LINE
: RECORD SIGNAL LINE
IC301
16
TC4052BFNELM
CMOS SWITCH
R218
4.7K
1
R418
4.7K
C205
50V4.7
50V2.2
50V2.2
50V2.2
48 47 46 45 44 43
INRD
49
ALCC
50 ALCR
51 RECL
52
RECR
VFC1
53
54 GND
55 VFC2
56 MIC
BH3874AKS2
57 DPLL1
AUDIO SOUND PROCESSOR
58 DPLL2
DPLR1
59
DPLR2
60
61 PS1
62 PS2
F1L1
63
F1L2
64
F1R1
1 2 3 4 5 6
10
9 11
8 7 6
TO
PANEL CIRCUIT (CP605) ON
SCHEMATIC DIAGRAM-8
CP503
18 17 16 15 14 13 12 11 10
R318
4.7K
42 41 40 39 38 37 36 35 34 33
STEPC
OUTL
32
OUTR
31
VCC 30
CAP
29
FILTER
28
BASS5 27
BASS4 26
IC302
BASS3
25
BASS2 24
BASS1 23
HPFR3
22
HPFR2
21
HPFR1 20
HPFL3 19
HPFL2
18
HPFL1
17
F5R
7 8 9 10 11 12 13 14 15 16
R474
100
C459
0.1
12 13 15
14 16
IC305
BU2090AF-E2
5 4 3 2 1
C461 470P
C465 470P
R461 4.7K
R462 4.7K
R463 1K
R464 4.7K
R465 4.7K
R466 1K
R468 4.7K
R469 4.7K
R470 4.7K
R471 4.7K
9 8 7 6 5 4 3 2 1
C462
100P
C338
0.22
C411 16V10
C211 16V10
C337 16V10
C336 0.1
R313
R312 3.3K
47K
C334
C464
0.22
50V2.2
C332
R311 15K
0.1
R310
R309 82K
22K
C329
0.068 C330
0.068
R306
82K
R308
390K
C327
0.068
C328 R307
82K
0.068
R305
390K
C326
0.068
C325
0.068
IC305
I/O EXPANDER