TECHNICS SA-EH760 Service Manual

SCHEMATIC DIAGRAM- 1
OPERATION CIRCUIT
A
FL901 (RSL0298- F)
150
R997
C922
35V33
1 6 8 10 11 1213 14 15 16 17 18 19 2021 22 23 24 25 26 27 28 29 3031 32 33 34 35 36 37 38 39 404142 43 44 45 46 47 48 49 50 53 542 5 7 9
C920
Y A A RQPONMLKJIHGFDCBBCDEFGHIJLLMNOPQRSTUVWX
50V4.7
C928
50V4.7
V
E
D973
C921
MA4030MTA
1000P
R996
150
NOTE: The number which noted atthe connectors on the schematicdiagram as "SCHEMATICDIAGRAM-1" or "SCHEMATIC DIAGRAM-2" indicates the schematic diagram serialnumber located on the leftcorner in the schematic diagram.
FL DISPLAY
C908
470P
R925
1K
R922
10K
S901
R901
) /
(
820
S902
)
MODE
(
1K
)
S903
DEMO
-
CLOCK/TIMER,
(
1.2K
S904
)
PLAY/ REC (
1.5K
S905
)
FM AUTO/MONO
(
1.8K
S906
)
TUNING MODE
(
2.2K
S907
) SET
(
R906
R905
R904
R903
R902
R907
3.3K
S908
R908
)
INPUT SELECTOR
(
4.7K
S909
INPUT)
(6CH DISCRETE
: SOURCE SIGNAL LINE
C927
C919
50V4.7
50V4.7
JK903 HEADPHONES
W905
R924
C907
R950
C924
C395
C396
470P
100
0.1
0.047
0.047
1K
10K
R921
4.7K
R949
0.01
C904
R51147R509
R51247R510
C509
C510
47
0.01
47
0.01
) PS
(
S914
(RDS DISP MODE)
Q912
Q911
U
T
2.2K
R944
S
D974
MA165TA
0.1
C923
R913
820
S915
S
T M
) PTY
(
R914
1K
0V
R964
120
-
6.1V
R963
120
-
6.1V
0V
Q911,912 2SD2144STA
MUTING
R915
1.2K
R916
1.5K
-
6.2V 0.1V
Q961 UN4115TA
MUTING CONT.
R968
1M
K 0 1
R909
1.8K
S910
)
(TUNING,
D961
C961
MA4075MTA
16V10
R910
2.2K
)
S911
TUNING,
(
150K
R975
R911
3.3K
S912
C931
(TUNER/BAND)
16V10
R912
4.7K
S913
(DIGITAL
R967
2.2K
)
S.WOOFER
R966
3.9K
R965
3.9K
SCHEMATIC DIAGRAM- 2
-
27.6V
: POSITIVE VOLTAGE LINE : NEGATIVE VOLTAGE LINE
A B C
A VBCDEFGHIJK LMNOPQR UTS
-17.3V
-17.3V
-17.3V
-17.3V
-17.3V
-17.3V
-17.3V
-17.3V
-17.3V
-17.6V
-26.8V
-26.8V
5.2V
-22V
-17.3V
-12.5V
-17.3V
P10
-27.6V 51
-VP
-26.9V
A B C D E F G H
I J K L M N O P Q R S T
U V
W
X Y
D934 MA165TA
D933 MA165TA
R990 100K
100K
R993
-21.8V
-21.7V
-11.8V
-16.8V
-17.1V
-21.7V
-21.7V
-12V
-12.6V
-7.6V
-16.8V
-9.6V
-6.8V
-18V
-18V
-18V
-11.4V
-11.4V
-12.2V
5.2V
-18V
-12.4V
-9.6V
-4.8V
-11.7V
1.5V
52
P11
53
P12
54
P13
55
P14
56
P15
57
P16
58
P17
59
P18
60
P19
61
P20
62
P21
63
P22
64
P23
65
P24
66
P25
67
P26
68
P27
69
P28
70
P29
71
P30
72
DD4
V
73
P31
74
P32
75
P33
76
P34
77
P35
78
REGIN0
0V
79
REGIN1
0V
80
STANDBY
TIMER
81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 0V
P9P8P7
T 3.1ms.
S.W LED
LOUNGE
0V
CAB
-12.7V
P6P5P4P3P2
V
IC901 LC8A524A5N28
SYSTEM CONTROL/ FL DRIVE
4V 0V
-25V
T 16ms.
2V/2ms.DIV.
T
10ms.
CHORUS
MUTE
POWER
/ECO
0V
5.1V
5.1V
0V
MUTE2
0V
C905
1SS291TA
F=6MHz
F=32.7kHz
5V
0V
0V
5V
SS2VDD2
V
5.2V
1000P
D915
P1
NC
F=32.7kHz
5V
NCNCRL4
C901
6.3V100
R937
NC
3.4V P-P
2V/2ms.DIV.
10K
1G2G3G4G5G6G7G
4V 0V
-25V
T 3.1ms.
4.4V P-P
F=6MHz
KEY KARAOKE
5.2V P-P
1.8V P-P
5V
0V
SH CS
SH DO
SH DI
SH CK
E DET
5.2V
3.8V
3.8V
R935 100
4.4V
R934 100
5.2V
R988 1K
1.2V
3132333435363738394041424344454647484950
REMOCON
RDS DATA
RDS CLK
HP SW
MIC DET VR JOGA VR JOGB NC(GND)
SH REQ
KEY TU
DD1
V
XC OUT
XC IN
VSS
X OUT
XIN
RESET
AC IN
SEL/ TUNER
SEL TUNER
ST/ AV6CH
RL2 RL1
LC72 CK
LC72 DO/ST
LC72 CE
LC72 DI CHECK
CR TIMER
SD
100
5.2V
D903
R987 1K
C913
NC
R926
MA165TA
16V10
2.2K
30
5.2V
29
2.6V
28
2.5V
27
0.5V
26
5.2V
25
5.2V
24
5.2V
23 22
1.3V
21
5.2V
20
5.2V
19
5.2V
18
2.5V
17
2.2V
16 15
2.7V
14
1.7V
13
5.1V
12
2V
11
0V
10
5.2V
5.1V
5.1V
5.2V
5.1V
0V
0V
2.6V
TP
820K
R955
R918 10K
R928 47K
R953 100
D905 1SS291TA
R954 100K
0.1
C912
L902 1 H
Q901 UN4212TA
RESET
5.1V
A B C D
E F
10M
R952
5.2V
22K
R956
1K
R938 1K
R941 1K R942 1K R929 1K R930 1K R932 1K R931 1K
R951 330K
22K
X901
(6MHz)
X902
(32.7kHz)
0V
C925
C915
1000P
0.01
C910
20P
C911
18P
C914
D904
50V2.2
MA165TA
R957
1K
R976
100K
J
H
R
F G A B D C
R919
15K
100
R936
R969 2.7K
R960 1.5K
R958 1K
R959 47
R933 470
5.2V
C916
6.3V100
D306
SELS5223C
R939
1.5K
A
R986
1.5K
B
R995
220
C
( )
D954
SELS5923C
(
PLAY/ REC
D951
LNJ301MPUJAD
(DIGITAL
S.WOOFER
D906
MA165TA
)
)
U
LEQ
OP
KIN
R991
47K
C903
0.01
C926
1000P
D902
1SS291TA
6.2V
D901
1SS291TA
L901
10 H
C902
10V1000
SCHEMATIC DIAGRAM- 3
OPERATION CIRCUIT
A
C151
16V10
1K
R158
5.2V
L151
100 H
C152 330P
C158
C154
6.3V47
560P
2.5V 1
VREF STDBY
2.5V 2
MPX IN
5.1V 3
VDD
VSS
2.5V 5
FL OUT
2.5V 6
CIN
T1
T2
PCL
10 11
X OUT
X151
IDR
RDCL
RDDA
RDS- ID
V
VSS
XIN
: POSITIVE VOLTAGE LINE : NEGATIVE VOLTAGE LINE
2.4V
3V
5.1V
2.5V2.6V
IC151 LC72721NMTLM
RDS SIGNAL DEMODULATOR
100K
100K
R154
R153
C153
C155
1000P
1000P
C160
1000P
R151
1K
R152
1K
C159
6.3V47
20
19
T3
18
17
16
15
14
T4
13
DD
12
: SOURCE SIGNAL LINE
D C
B
L152
100
H
D151
ABC
R155
120
H 1
MA4051MTA
L153
D956
SELS5923C
(TRI-AMPLIFIER)
D907
MA165TA
A B C D E
F G H
I
J K
220
R984
W902B
15 14 13 12 11 10
47P
C157
VR901
EVQVBXFK124B
(VOLUME)
COM
BA
1 2 3
EFA
100
100
R945
R943
C909
1000P
22K
22K
R962
R961
0.01
C917
47P
C156
R946
1K
C918
6.3V100
5.1V
Z901 RCDGP1U28XD
(REMOTE SENSOR)
R923
22K
7.2V
- 27.6V W901B
M N O P Q
R S
T
Q902 UN411FTA
MUTING CONT.
U
0V0V
10K
4.7K
15 14 13 12 11 10
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