Read Sony XM-7547 (serv.man2) Service Manual online
XM-7547
6
6
4. CHANGE OF DIAGRAMS
• BLOCK DIAGRAM – AMPLIFIER SECTION –
5
7
6
7
2
2
3
3
5
7
6
7
6
7
5
6
7
DIFFERENTIAL
AMP
Q104-105
DIFFERENTIAL
AMP
Q106-107
POWER AMP
(VOLTAGE STAGE)
Q108
BIAS
VR101,Q110
LEVEL SHIFT
Q101
OVERLOAD
Q113-114
5
9
7
8
6
2
3
3
5
4
7
6
7
2
2
3
3
5
7
6
7
6
7
5
6
7
DIFFERENTIAL
AMP
Q304-305
DIFFERENTIAL
AMP
Q306-307
LEVEL SHIFT
Q301
OVERLOAD
Q313-314
DIFFERENTIAL
AMP
Q512-513
OFFSET
SET
Q707-713
OVERLOAD
Q521-Q524
Q521-Q524
CNJ710
CNJ701
8
2
2
4
9
3
1
1
10
6
7
5
CNP805
DIFFERENTIAL
AMP
Q504-505
POWER AMP
(VOLTAGE STAGE)
Q109
POWER AMP
(VOLTAGE STAGE)
Q308
BIAS
VR301,Q310
POWER AMP
(VOLTAGE STAGE)
Q309
DIFFERENTIAL
AMP
Q505-506
POWER AMP
(VOLTAGE STAGE)
Q507
BIAS
VR501,Q509
POWER AMP
(VOLTAGE STAGE)
Q508
POWER AMP
(VOLTAGE STAGE)
Q516
BIAS
VR502,Q518
POWER AMP
(VOLTAGE STAGE)
Q517
POWER AMP
(FINAL STAGE)
Q111-112
POWER AMP
(FINAL STAGE)
Q311-312
POWER AMP
(FINAL STAGE)
Q510-511
POWER AMP
(FINAL STAGE)
Q519-512
NFB ON
NFB OFF
NFB ON
NFB OFF
NFB ON
NFB OFF
NFB ON
NFB OFF
RY701
RY702
DIRECT
SW706
DIRECT
SW703
LINE SWITCH
Q102
LINE SWITCH
Q103
LOWBOOST
IC701
LOWBOOST
IC706
LINE SWITCH
Q302
LINE SWITCH
Q303
DIFFERENTIAL
AMP
Q514-515
FAN CTL
Q702
CNP803
CNB803
CNP708
POWER
DRIVE
Q704
THERMAL
DET
TH701
POWER
CONTROL
Q703
FAN DRIVER
Q701
INVERTER
Q705
R-CH
R-CH
CN707
CN705
CN704
SPEAKER OUT
RY703(1/2)
RY703(2/2)
ON
OFF
OFF
B-
B-
B+
B+
PRE AMP
IC703
H.P.F
IC702
H.P.F
IC709
L.P.F
IC707
L.P.F
IC708
LEVEL
VR701
FILTER
VR702
FILTER
VR702
PRE AMP
IC704
H.P.F
IC702
H.P.F
IC710
L.P.F
IC712
L.P.F
IC711
LEVEL
VR704
FILTER
VR705
FILTER
VR705
X10,X1
S701
FILTER
CNP702
CNJ702
CNJ702
CNP702
CNJ703
CNP703
CNP703
CNJ703
HPF
LPF
FLAT
HPF
LPF
FLAT
LOWBOOST
VR703
LOWBOOST
VR708
CNJ708
FN801
DC FAN MOTOR
INVERTER
Q706
+45V
+15V
–15V
–45V
T701
D708
D709
D711
D710
B+
B+
B-
B-
R-CH
L-CH
TO
SUB 1
BOARD
CNB710
TO
POWER
BOARD
CNB805
09
FILTER BOARD
AMPLIFIER BOARD
FILTER
FILTER
S702
S705
L
MONO-L
R
MONO-L
INPUT
MONO-R
L
MONO-R
R
SUB WOOFER
SPEAKER OUT
FR
FL
RL
RR
M
X10,X1
S704
FILTER
ON
TR BOARD
• Signal path
: Audio
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