PANASONIC RQ-SX97 Schematics
SCHEMATIC DIAGRAM 1
:MIC SIGNAL LINE
:POSITIVE VOLTAGE LINE :PLAY BACK SIGNAL LINE
: RECORDING SIGNAL LINE
A
ERASE HEAD
REV
R/P HEAD
FWD
MAIN CIRCUIT
MOTOR
JK1 MIC
B
REV
FWD
Lch
Rch
Rch
Lch
12
11
10
9
5
4
6
3
7
2
8
1
HEAD
CIRCUIT
10
9
8
7
6
5
4
3
2
1
AB D
IC4
LB11675V
MOTOR DRIVE
1.4V
V
1.4V
1.4V
1.4V
0V
0V
0V
0V
0V
0V
270
R103
TAPE SPEED
ADJ.( 2)
1.4V
0V
1V
0V
0V
TP10
TP11
TP9
TP8
25V47
25V47
16V2.2
16V2.2
16V2.2
16V2.2
1
U
2
3
START
4
P GND
5
GND
Vcc1
6
OSC
7
VREF
8
VSP
9
IN+
10
OUT
11
12 13
RI
Q57
UNR921BJTX
SWITCHING(TAPE SPEED)
0V
C9
R7
220
1.4V
R8
220
C6
C14
Q14
0.8V
D
G
2.9V
0.8V
2.9V
Q11
Q12
D
G
2.9V
2.9V
C11
C12
C13
7
6
5
4
3
2
1
24K
R93
VR2
10K(B)
D12
10K
R94
MA2SD1000L
39K
R92
AB
R01
EYF6CU
F
G
TP16
TP14
D2
DAP222TL
L
R
G
CN1
10
9
8
7
6
5
4
3
2
1
(MOTOR)
TP4
C150
0.22
10K
R96
R98
100K
C157
0.033
TAPE SPEED
ADJ.
270
R97
VR3
10K(B)
HIJ
Q6
UMS1NTN
SWITCHING(ERASE)
(0V)
0V
ABCDE
D6
DAP222TL
1.4V
W
24
NC
23
NC
22
P GND
21
COM
20
0.2V
FC
19
1.4V
DR
18
PV
17
PU
16
PW
15
1.4V
TC2
14
1.4V
TC1
0V
Q18
2SD1820ASTX
SWITCHING(ERASE)
R17
1.5K
R13
1.5K
Q7
2SD1820ASTX
SWITCHING(ERASE)
0.8V
S
Q11,14
2SK1958T1
HEAD SELECT
(REV PLAY:ON)
0.8V0.8V
SGD
0.8V
S
Q12,13
2SK1958T1
HEAD SELECT
(FWD PLAY:ON)
0.8V0.8V
SGD
1.4V
1.4V1.4V
Q13
C144
C159
0.33
C41
C40
C32
C33
1
D8
820P
820P
820P
820P
22K
R171
0.8V
0.8V
0.8V
0.8V
DAP222TL
R02
EYF6CU
C
R36
R35
R37
R38
47K
47K
47K
47K
R91
470K
A
B
C
D
E
F
SCHEMATIC DIAGRAM 2
:FM SIGNAL LINE:POSITIVE VOLTAGE LINE :MAIN(TAPE/RADIO) SIGNAL LINE
:TAPE PLAYBACK SIGNAL LINE:MIC SIGNAL LINE
KEF
L
M
A
R169
220K
330P
C242
IC2
AN7501FHQ-EB
PRE/DOLBY/ASC/
15K
R23
POWER AMP
0.5V
C50
1500P
C34
0.022
R29
6.8K
R26
C42
150
4V33
D
E
C
F
B
R27
150
C43
4V33
R30
C35
R24
6.8K
0.022
15K
C55
C51
1
1
C52
0.8V
0.8V
0.8V
0.8V
0.8V
0.8V
0.8V
0.8V
0.8V
0.8V
0.8V
6.3V2.2
1.4V
1.4V
1
C74
C79
C90
0.01
15K
TP19
R52
R49
2.2K
C72
3300P
DOLBY BLOCK
DOLBY BLOCK
VREF
160
100K
VREF
100K
160
ASC
ASC
C83
R53
390K
C80
0.33
0.01
1.4V
0V
37
38
39
40
41
42
43
44
45
46
47
48
Q66
RVTDTA143EUX
SWITCHING(S.B.)
1.4V
C64
16V2.2
C68
0.047
NOISE
FREE RET.
Vcc
25K 200K
BIAS
25K 200K
FWD/ REV
PRE MUT
NR
ON/OFF
1 2 3 4 5 6 7 8 9 10 11 12
680P
C86
2700P
86K
86K
C92
0.056
BST
27K
R47
C95
680P
252627282930313233343536
AGC
RIPPLE FILTER
CONTROL
MN
O
P
C98
1
C99
1
0.8V
0.8V
0.8V
0.6V
1.4V
0.6V
0V
1.4V
0.7V
1.3V
1.4V
VR1-1
50K(A)
C105
0.22
C106
4V33
(VOLUME)
VR1-2
50K(A)
C102
16V2.2
R160
47K
C103
0.068
C104
4V6.8
C135
0.33
2.5V100
C116
2.2
R66
2.2
R67
C134
2.5V100
0.33
C117
0.7V
C111 4V22
Q30
2SB1295-6-TB
POWER SUPPLY
G
H
1.4V1.4V
0.47
C119
C88
1
0.8V0.8V0.8V0.8V0.8V0V0.4V0.8V0.8V0.8V0.8V1.4V
24
23
22
21
20
19
18
17
16
15
14
13
1.4V0.7V0V0.8V0.8V0V0.4V0.8V0.8V0.8V0.8V1.4V
C38
680P
R15
18K
C46
3900P
2.5V15
C15
0V
Q8
UN9215TX
SWITCHING
(TAPE SELECT)
0V
0V
Q20
UN9215TX
SWITCHING
(TAPE SELECT)
18K
R25
C29
3900P
0V
Q25
UN9110TX
SWITCHING
(PRE MUTE)
R22
22K
1.4V
1.4V
C219
C87
10K
2700P
0.01
C126
R170
1
D24
SB00703QTL
1.4V
Q19
UN9215TX
SWITCHING
(TAPE SELECT)
0V
0.5V
0.5V
1.4V
0.5V
0.5V
1.3V
(1.3V)
1.3V
(1.3V)
(0.6V)
0.6V
R80
1.2V
1K
1.3V
Q33
2SB1295-6-TB
POWER SUPPLY
J
K
L
M
P
R
N
C73
3300P
C81 0.33
C84
R54 390K
R50
R41
15K
C61
0.01
2.2K
C56
1
R48
8.2K
TP20
1
0V
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