Panasonic SA-AK44 Service Manual page 117

SCHEMATIC DIAGRAM - 7
TACT SWITCH (1)
CIRCUIT
Z940
RCD37142TC5
REMOTE
CONTROL
SENSOR
O
Vdd G
1 2 3
C941
0.01
D949
C940
SLR325DCT31
1000P
D946-D948
SLR325MCT31W
R949
D949
470
RMT
9 9
VREF+
8 8
NAS_LED
7 7
D948
CD_LED
6 6
R948 470
TAPE_LED
D947
5
5
R947 470 TUNER_LED
D946
4 4
R946 470 CTL_+B
3
3
SUB_K1
2
2
R961
GND
S940
R940
1 1
22K
AUX
2.7K
H940B
H940A
R941
S941
4.7K
TUNER
R942
/BAND
6.8K
S942
R943
TAPE
10K
S943
R944
CD
22K
S944
R945
AI-EQ
68K
S945
SSEQ
VR900
EVEKE2F2524B
JOG VOL
A COM B
1 2 3
D917
C900 C919
D918
100P
100P
R905 R904
2.2K 1.8K
R913 R912 R911 R910 R909
6.8K 4.7K 2.7K 2.2K 1.8K
S913 S912 S911 S910
TUNE TUNE MEMORY FM
UP MODE MODE
TACT SWITCH (2) CIRCUIT
: +B SIGNAL LINE
PANEL CIRCUIT
BU2090AF-E2
IO EXP 2
9
<0.13V>
(0.13V)
((0.15))0.13V
10
<0.13V>
(0.13V)
((0.15))0.13V
11
CD
<0.13V>
C695
(0.13V)
1000P
((0.15))0.13V
12
TAPE
<0.13V>
C694
IC602
(0.13V)
1000P
((0.16))0.13V
13 TUNER
<0.24V>
(0.24V)
C693
((0.26))0.24V
1000P 14
AUX
<7.34V>
(7.34V)
((7.32))7.35V
15
<6.0V>
(6.01V)
((0.28))6.0V
16
VCC
<5.3V>
(5.31V)
((5.28))5.3V
C601
0.1
R960 R959 R957 R956 R954
R958 R955
10K 6.8K 4.7K 2.7K 2.2K 1.8K 1.2K
R950
10K
S950
D2 EJECT
V_JOG_A/B
R900
GND
22K
SUB1_K2
R919 D914-D918
12K
SLR325MCT31W
SUB_K1
D914
D915
R914 470
D916 R915 470
R916 470
R917 470
CTL_+B
R918 470
R903 R902 R901
1.2K
1K 1K
R908 R907 R906
1.2K 1K 1K
S909 S908 S907 S906
TUNE TAPE REV REC/
DOWN EDIT MODE STOP
: MAIN SIGNAL LINE
1 2 3 4 5 6 7
C600
35V22
IC602
8
<0.45V>
(0.45V)
((0.47))0.45V
7
<7.37V>
(7.38V)
((7.36))7.36V
6
<7.37V>
(7.38V)
((7.36))7.36V
5
<7.34V>
(7.34V)
((7.32))7.34V
4
<7.34V>
(7.34V)
((7.33))7.33V
3
CLK
<0.1V>
(0.1V)
((0.11))0.1V
2
Data
<0.07V>
(0.07V)
((0.08))0.07V
GND 1
<0.07V>
(0.07V)
((0.08))0.07V
R953
R952
1K 1K
R951
22K
S951
S.WOOFER
IC601
BU2090AF-E2
IO EXPANDER IC
CP900
1 1
2
2
3 3
K2
4 4
8 7 6
K1
5 5
6 6
G1
7 7
G2
8 8
G3
9 9
G4
9 10 11
10
10
G5
11 11
12 12
CN900
8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Q600
D690,D692
(9.21V)<9.22V>
(9.21V)<9.21V>
9.2V((9.15V)) 9.21V((9.16V)) D696-D699
[9.23V] R624
[9.21V]
RVD1SS133TA
22K
(8.47V)<8.47V>
8.46V((8.47V))
[8.47V]
R623
1.5K
RMT
LED9V
LED_CTL
D603-D604
D903-D904
SLR325MCT31W Q600
KTA12710YTA
SUPPLY SWITCH
LED +9V
NAS_LED
CTRL_+B
R610
SER4
2.2K
SER1
R609
1K
DVREF+
R630
R628 R629
10K
10K 10K
R631 100
R632 100
D605
SLI325URCT31
R634
1K
R635
C606 C607
1K
100P
100P
R605
<0V>(0V)
3.9K
((0))0V
5 4 3 2 1
D605
IC601
R636
12 13 16
14 15
100
1 2 3 4 5 6
H920A
H920B
1 2 3 4 5 6
L920
ELEXT101KA04L
921
RLQB101JTD-D
L922
ELEXT100KA04L
C648
1000P
L920 L921
L922
C920
0.022
C921
0.022
R920
68K
EJECT
4 5 2 3 6 7 1
JK920
HEADPHONE
HEADPHONE CIRCUIT
FL600
RSL0310-F
25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
D690
D699
D698
D697
D696
D692
C608
R637
330P
22K
C609 6.3V100
C610 0.1
R638
680
C611
6.3V1000P
D610
C612 MA723TA
1000P
KEY1
KEY2
R633 100
KEY3
V_JOG_A/B
R680
DVREF+
10K
SER2
SER1
SYS6V
CD1
NAS_LED
LED_CTL
NAS_B
NAS_A
VREF+
PCONT
MUTEA
R681
10K
SW600
HPL
JOY JOG
HPR
HP_GND
HPSW
A COM B
1 2
3
R682
12K
R683
22K
S920
CD