Read Sony XM-7547 Service Manual online
XM-7547
8
8
SECTION 5
DIAGRAMS
5-1. BLOCK DIAGRAM – AMPLIFIER SECTION –
2
2
3
5
7
6
7
6
7
5
6
7
DIFFERENTIAL
AMP
Q104,106
DIFFERENTIAL
AMP
Q105,107
POWER AMP
(VOLTAGE STAGE)
Q108
BIAS
VR101,Q110
LEVEL SHIFT
Q101
OVERLOAD
Q113,115
OVERLOAD
Q114,116
5
7
6
7
5
7
6
7
6
7
5
6
7
DIFFERENTIAL
AMP
Q304,306
DIFFERENTIAL
AMP
Q305,307
LEVEL SHIFT
Q301
OVERLOAD
Q313,315
OVERLOAD
Q314,316
OFFSET
SET
Q857-861
CNJ807
8
2
2
3
9
4
1
1
10
6
7
5
CNP805
POWER AMP
(VOLTAGE STAGE)
Q109
POWER AMP
(VOLTAGE STAGE)
Q308
BIAS
VR301,Q310
POWER AMP
(VOLTAGE STAGE)
Q309
POWER AMP
(FINAL STAGE)
Q111-112
POWER AMP
(FINAL STAGE)
Q311-312
NFB ON
NFB OFF
NFB ON
NFB OFF
RY801(1/2)
RY801(2/2)
DIRECT
S806-1
DIRECT
S805-1
LINE SWITCH
Q102
LINE SWITCH
Q103
LOWBOOST
IC806-1
LOWBOOST
IC812-1
LINE SWITCH
Q302
LINE SWITCH
Q303
FAN CTL
Q852
CNP806
POWER
DRIVE
Q854
THERMAL
DET
TH851
POWER
CONTROL
Q853
FAN DRIVER
Q851
INVERTER
Q855
B-CH
D-CH
CN811
CN810
SPEAKER OUT
ON
OFF
ON
OFF
B-
B+
B-
B+
H.P.F
IC803-1
L.P.F
IC805-1
L.P.F
IC804-1
FILTER
VR805-1
FILTER
VR805-3
PRE AMP
IC807-1
H.P.F
IC808-1
H.P.F
IC809-1
L.P.F
IC811-1
L.P.F
IC810-1
LEVEL
VR802-1
FILTER
VR806-1
FILTER
VR806-3
X10-X1
FILTER
CNP808
CNJ808
CNJ808
CNP808
CNJ809
CNP809
CNP809
CNJ809
HPF
LPF
FLAT
HPF
LPF
FLAT
LOWBOOST
VR803-1
LOWBOOST
VR804-1
CNJ806
FN801
DC FAN MOTOR
INVERTER
Q856
+45V
+15V
-15V
-45V
T851
D854
D855
D856
D857
D858
D859
D861
D860
B+
B-CH
D-CH
TO
POWER
BOARD
CNB805
09
FILTER BOARD
AMPLIFIER BOARD
3
1
TEST TONE AMP
IC851-2
TEST TONE AMP
IC851-1
FILTER
FILTER
FILTER
S803-1
S801-1
S801-3
X10-X1
FILTER
S802-1
S802-3
S804-1
A
A+B
MONO
C+D
MONO
B
(MONO)
(MONO)
INPUT
C
D
SPEAKER OUT
B
A
C
D
2
1
2
1
2
5
7
6
TEST TONE
S851
2
2
3
3
3
M
5
7
6
7
PRE AMP
IC801-1
H.P.F
IC802-1
LEVEL
VR801-1
• Signal path
: Audio
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