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Stereo System
SAAK18 - MINI HES W/CD-PLAYER
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Deck Circuit - Panasonic SA-AK18 Wiring Diagrams
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Service manual
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Operating instructions manual
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Operating instructions manual
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SCHEMATIC DIAGRAM-8
DECK CIRCUIT
P.B
HEAD
1 MECA
CS1001
1
1
L
2
2
3
3
4
4
5
5
R
3
CS1002
2
R/P
HEAD
MECA
1
1
L
2
2
3
3
R
4
4
5
5
4
E HEAD
<<11.3V>>
11
R1001
C1006
1
50V22
12
+
0V
Q1001
<<0V>>
0V
<<22.9V>>
0V
0V
<<0V>>
<<0.2V>>
1SS355TE17
0V
<<0V>>
R1003
10K
C1001
0.01
Q1001
2SC2784FTA
SWITCHING
(BEAT PROOF)
: +B Line
-69.5dB
-69.5dB
C1012
C1015
1000P
1000P
C1019
10 0 0P
R1009
18K
-69.5dB
L
-69.5dB
IC1004
BA7755A
R/P SELECT
IC1004
H=OFF
VCC
1
2
3
4
5
8.5V
R
R1010
C1021
470P
18K
REC H
L1001
RLQB470JTD-D
C1014
14.2V
1000P
<<13.9V>>
6
1
Q1004
5
2
0V
4
3
<<0.4V>>
0V
L1002
7L1A62N
<<0.6V>>
Q1005
14.2V
C1010
<<14V>>
R1004
25V100
Q1003
1.5K
D1003
D1004
R1008
C1008
UDZTE173R6B
22K
50V1
0V
<<0V>>
47K
R1006
Q1006
1K
0V
<<0V>>
Q1003
Q1006
2SD2144STA
DTC144TKA146
SWITCHING
BIAS OSC CONTROL
(REC;ON)
(METAL/CR02)
: Playback Signal Line
C 1038
220P
R1017
8.2K
C1034
R1015
50V3.3
47
C1032
0.018
C1036
C1020
0.033
470P
24
23
22
21
20
19
18
L
-
A
+
ALC
PB AMP (L)
IC1001
PB AMP (R)
LOGIC
B
+
R
A/B
-
4
1
2
3
5
6
7
0V
<<1.3V>>
C1033
R1022
0.018
10K
R1028
C1022
1000P
REC H
Q1004,Q1005
R1014
2SD2144STA
R1012
4.7K
0V
BIAS OSC
<<0.6V>>
4.7K
(PLAY;ON)
C1018
Q1007
0.01
KTC3875GRTA
BIAS OSC CONTROL
R1013
4.7K
C1026
6.3V47
0V
<<0.7V>>
0V
Q1009
<<0.6V>>
0.6V
0V
R1011
10K
0V
<<0V>>
0V
<<4.8V>>
Q1007
0.6V
0V
Q1008
R1024
R1020
56K
47
CrO2
1 2
CP1002
CS971
1 2
IC971
ON2180RLC1
PHOTO INTERRUPTER
MECHANISM (DECK 2)
CIRCUIT
: Record Signal Line
R1055
R1098
2.2K
Q1020,Q1021
47K
KTD1304TA
FILTER AMP
-44dB
R1039
R1032
15K
10K
C1044
R1038
10V33
4.7K
R1090
330
C1043
C1046
50V4.7
10V220
15V
<<14.8V>>
17
16
15
14
13
R
P
P
NOR/Cro &
R
HI/LO LOGIC
R
LOGIC
RIPPLE
REJECTION
P
REC/PB
8
11
9
10
12
R1035
10K
8.2K
IC1001
AN7348STA-E1
P.B EQ/REC AMP/
ALC/TPS AMP
Q1008~Q1011
KTC3875GRTA
INTERFACE
MECHAGND
0.5V
R1037
0.7V
Q1011
100K
0V
0.2V
0.1V
R1027
100K
0.1V
0.2V
Q1010
R1040
R1036
56K
47
3
4
5
6
7
8 9
3
4
5
6
7
8 9
1
STBY_5V
2
AD_OUT
3
RECINH_F
4
MODE
5
RECINH_R
6
HALF
7
VREF_GND
Z9 7 1
R973
39K
EXBF7L355SYV
IC951
ON2180RLC1
PHOTO INTERRUPTER
276mV / CLA
Q1020
R1094
R1091
1K
2.2K
0V
0.7V
<<0V>>
<<0.7V>>
R1092
2.2K
0V <<0V>>
R1096
Q1021
100K
R1093
1K
0V
5V
R1049
<<0V>>
<<5V>>
1M
C1048
R1084
0V
50V1
2.2K
<<0V>>
0.2V
<<0.2V>>
0.7V
0V
<<0.7V>>
<<0V>>
C1049
R1047
1000P
0V
1K
<<0V>>
Q1014
R1048
Q1012
R1050
1K
1M
C1047
R1086
0V
1.3V
2.2K
50V1
<<0V>>
<<1.3V>>
R1046
0.7V
100K
<<0.7V>>
R1052
C1050
0V
220
1000P
<<0V>>
Q1013
-44dB
Q1014,Q1015
Q1012,Q1013
2SC2412KT96R
KTD1304TA
BUFFER AMP
MUTING
Q1017
Q1017
2SD965RTA
MOTOR DRIVE
1 2
3
4
5
6
7
8 9
CP1001
CS951
1 2
3
4
5
6
7
8 9
MECHANISM (DECK 1)
CIRCUIT
C
5
R1
6
11.
<<1
0.7V
<<0.
Q
0V
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