Panasonic SA-AK22 Service Manual page 41

SCHEMATIC DIAGRAM - 7
PANEL CIRCUIT
TACT SWITCH (1)
CIRCUIT
Z940
O G
Vdd RCD37142TC5
1 2 3
REMOTE CONTROL SENSOR
C941
0.01
C940
1000P
D949
SLR325DCT31w
R949
D949
470
H940B
RMT
9
9
VREF+
8 8
NAS_LED
7 7
6 6 CD_LED
5 5 TAPE_LED
TUNER_LED
4 4
CTL_+B
3 3
SUB_K1
2 2
R961 R960 R959
GND
S940
R940 1 1
22K 10K 6.8K
AUX
2.7K
H940A
R941
S941
4.7K
TUNER
R942
/BAND
6.8K
S942
R943
TAPE
10K
S943
R944
CD
22K
R945
68K
S945
SSEQ
VR900
EVEKE2F2524B
JOG VOL
R900
22K
R919 D914-D918
12K
SLR325MCT31W
A COM B
1 2 3
D915
D916
D917
C919
C900 D918
100P
100P
R905 R904 R903 R902
2.2K 1.8K 1.2K
1K
R913 R912 R911 R910 R909 R908 R907
6.8K
4.7K 2.7K 2.2K 1.8K 1.2K 1K
S913 S912 S911 S910 S909 S908
TUNE TUNE MEMORY FM TUNE TAPE
UP MODE MODE DOWN EDIT
TACT SWITCH (2) CIRCUIT
: +B SIGNAL LINE
: MAIN SIGNAL LINE
1 2 3
C600
35V22
R957 R956 R954 R953
R958 R955 R952
4.7K 2.7K 2.2K 1.8K 1.2K 1K 1K
R950 R951
10K 22K
S950
D2 EJECT
CP900
V_JOG_A/B
1 1
GND
2 2
SUB1_K2
3 3
K2
4 4
8
K1
5 5
SUB_K1
6 6
D914
G1
7 7
R914 470
G2
8 8
R915 470
G3
9 9
R916 470
G4
9
10 10
R917 470
G5
11 11
CTL_+B
R918 470
12 12
CN900
R901
1K
R906
1K
S907 S906
REV REC/
MODE STOP
41
: CD SIGNAL LINE
4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
Q600
(8.7V)<8.68V>
(8.7V)<8.68V>
8.62V((7.78V))
8.63V((8.55V)) D697
[8.64V] R624
[8.66V]
RVD1SS133TA
22K
(7.96V)<7.95V>
7.9V((8.56V))
[7.91V]
Q600
R623
1.5K
KTA12710YTA
RMT
SUPPLY SWITCH
LED9V
LED +9V
LED_CTL
NAS_LED
CTRL_+B
IC601
BU2090AF-E2 R630
R628 R629
10K 10K 10K
IO EXPANDER IC
R631 100
R632 100
R633 100
D605
SLI325URCT31
R680
10K
R634
1K
R635
C606 C607
1K
100P 100P
R605
<0V>(0V)
3.9K
((0))0V
7 6 5 4 3 2 1
D605
IC601
C661
0.1
R636
10 11 12 13 14 15 16
100
1 2 3 4 5 6
H920A
H920B
1 2 3 4 5 6
L920-L921
RLQB101JTD-D
L922
RLQB100JTD-D
L920 L921 L922
C920
0.022
C921
0.022
R920
68K
S920
CD
EJECT
4 5 2 3 6 7 1
JK920
HEADPHONE
HEADPHONE CIRCUIT
SA-AK22
FL600
RSL0314-F
27 28 29 30 31 32 33 34 35 36 37 38 39 40
D697
C608
R637
330P
22K
C609 6.3V100
C610 0.1
R638
C611 680
6.3V1000
D610
C612 MA723TA
1000P
KEY1
KEY2
KEY3
V_JOG_A/B
DVREF+
SER2
SER1
SYS6V
CD1
NAS_LED
LED_CTL
NAS_B
NAS_A
VREF+
PCONT
MUTEA
R681
10K
HPL
HPR
HP_GND
HPSW
SW600
JOY JOG
A COM B
1
2 3
R682
12K
R683
22K