Panasonic SC-AK48, Service Manual

Page: 51 / 104

S618
(EQ
)
J
OPERATION (2) CIRCUIT
3 2 1
1 8 3 6 5 4 2
1 8 3 6 5 4 2
2
1
3
4
5
6
7
4
5
3
6
2
7
1
7
7
8
8
9
7
10
6
11
5
12
4
13
3 2 1
14 15 16
R606
68K
R609
22K
R613
10K
R617
6.8K
S607
(
CD5)
S610
(CD5)
S613
(
CD4)
S617
(CD4)
S604
(CD
MANA
GER)
R631
4.7K
R638
2.7K
R644
2.2K
R649
1.8K
R653
1.2K
S623
(
CD3)
S627
(CD3)
S630
(
CD2)
S633
(CD2)
S635
(
CD1)
S636
(CD1)
R656
1K
R660
1K
R654
330
D611
(CD1)
R655
330
R657
330
R659
330
R661
330
D612
(CD2)
D613
(CD3)
D614
(CD4)
D615
(CD5)
H603
D611-615
SLR325MCT31W
S603
(
DECK/OPEN)
R605
10K
R608
6.8K
R611
4.7K
R616
2.7K
S606
(T
APE
EDIT)
S609
(REC/ST
OP)
S612
(REV
MODE)
S616
(
DECK2
OPEN)
R624
2.2K
R633
1.8K
R640
1.2K
R648
1K
S620
(TUNE
DO
WN)
S637
(FM
MODE/
BP)
S629
(TUNE
MODE)
S632
(MEMOR
Y)
S634
(TIME
UP)
R652
1K
S600
(SOUND CONTROL JOG)
R935
12K
R910
22K
C633 100P C632 100P
R646
330
D607
SLR325MCT31W
(TRI-AMP)
R647
2.2K
R677
2.7K
R645
4.7K
S601
(TRI-AMP
LOW)
S640
(TRI-AMP
MID)
S641
(TRI-AMP-HIGH)
R602
6.8K
CP600
CN600
R936
10K
F
G
H
I
S61
1
(T
APE)
R610
1K
S608
(CD)
R607
1K
S605
(TUNER)
R603
1.2K
R641
1.8K
S628
(ECD
MODE)
R639
1K
S621
(PLA
Y/REC)
R634
1K
S625
(CLOCK/TIMER)
R629
1.2K
S631
(RANDOM)
R604
1.8K
S619
(DISPLA
Y/DEMO)
R600
2.2K
S615
(S.WOOFER/VBASS)
R623
2.7K
R635
4.7K
R630
6.8K
R618
10K
S614
(EQ
)
R615
22K
S639
(3D
AI
EQ)
R636
68K
R621
220
D603
LNJ301MPUJAD
(S.WOOFER)
R625
330
D600
SLR325MCT31W
(T
APE)
R626
330
D601
SLR325MCT31W
(CD)
R627
330
D602
SLR325MCT31W
(TUNER)
R601
330
D606
SLR325MCT31W
(AUX)
A C E D B
JK600
HEADPHONES
L602
100 H
L600
100
H
L601
10
H
C604 0.022 C606 0.022
C672
0.1
A C B
A B D C E D E
R681
1K
R687
1K
C618 100P C617 100P
IC602
BU2090AF-E2
LED DRIVE
TR1-AMP
CLK
SW
AUX T
APE
TUNER CD L
VL2
L
VL1
Vcc
D
ATA
GND
R680
100
C619
0.1
SCHEMATIC DIAGRAM-12
S626
(EQ
)
S622
(EQ
)
I
OPERATION (1) CIRCUIT
JK601
MIC
4
5
3
6
2
7
1
C666 0.022
L606
10
H
K
FL CIRCUIT
X
Y
S602
(AUX/MD)
S624
(KARA
OKE)
L607
10 H
0V
(6.8V)
6.9V 6.9V 0.6V 5.6V 0.6V 5.0V 6.8V
0.6V 0V 0V
:POSITIVE VOLTAGE LINE :CD PLAYBACK SIGNAL LINE
8.5V
:MIC SIGNAL LINE
SA-AK48
51