Tact Switch Circuit; Panel Circuit - Panasonic SA-AK18 Service Manual

SCHEMATIC DIAGRAM-10
: +B Line
TACT SWITCH (1)
CIRCUIT
H602/W602B
CTRL+B
1
2
3
4
5
6
R661 7
D615
470
8
R659
D614
470
R657
D613
470
R655
D612
470
R654
D611
470
D611~D615
SLR325MCT31W
R660
1K S636
DISC 1
R656
S617 1K
S635
EJECT 1
DISC 4
R653
R617
S613 1.2K
6.8K S633
EJECT 4 DISC 2
R613 R649
S630
10K 1.8K
S610
EJECT 2
DISC 5
R644
R609
S607 2.2K
S627
22K
DISC 3
EJECT 5
R638
R606
S604 2.7K
68K S623
CD MANAGER EJECT 3
R631
4.7K
K2
K3
S611 S634
R652
R610
TAPE/ TUNE UP
1K
1K
DECK1/2
S608
R607
S632
CD
1K
MEMORY
R648
1K
S605
TUNER/BAND
R603
S629
1.2K
R640
TUNE MODE
1.2K
S602
R641
AUX/MD
1.8K
S637
: -B Line

PANEL CIRCUIT

H602/W602A
1
G5
2
G4
3
G3
4
G2
5
G1
6
K1
7
8
0.1V
((0.1V))
<0.1V>
9
5V
((5V))
<5V>
10
7V
((7V))
<7V>
11
7V
((7V))
<7V>
12
7V
((7V))
<7V>
13
7V
((7V))
<7V>
14
0.4V
((0.4V))
<0.4V>
15
5V
((5V))
<5V>
16
R658 C611
IC601
0.1
100
BU2090AF-E2
IO EXPANDER
R623 R600 R604
2.7K 2.2K 1.8K
R636 R615
68K 22K
HP_SW
CP600
TUNER
1
2
TAPE
3
4
5
CTL_+B
6
SUB_K2
7
43
: MAIN Signal Line
(FOR GC ONLY)
8G P1
7 8 9
1 2 3 5 6
C612
35V22
R650
680
D610
D610
SLR325MCT31W
0V
((0V))
<0V>
LED_CTL MUTE 8
3.6V
((3.6V))
REC/ <3.6V>
PCONT 7
PLY_TIM
VBASS
G5 6
7V
((6.9V))
<7V>
3D_AI
G4 5
4.9V
((0.1V))
<4.9V>
/CD
G3 4
0V
IC601
((0V))
<0V>
G2 CLK 3
0V
((0V))
<0V>
DATA
G1 2
0V
((0V))
<0V>
VCC GND
1
C613
680P
R663
C614
R662
680P
R629 R634 R639
1.2K 1K 1K
K4
R618 R630 R635
10K 6.8K 4.7K
S638
POWER
K1
CN600
1
CD
2
3
K2
4
K3
5
6
7
S624
SA-AK18
: CD Signal Line
2
10 11 12 13 14 15 16 17 18 19 20 21
R664~R676
100K
R664
R665
R666
R667
R668
R669
R670
R671
R672
R673
R674
R675
R676
Q602
8.5V((8.5V))<8.5V> 8.5V(
R679
7.8V
390
((7.7V))
1K
<7.8V>
1K
D617
SLR325DCT31
Q602
KTA12710YTA
POWER SUPPLY
R693 R682
1K 4.7K