Read Sony XM-1505SX / XM-1805GX Service Manual online
9
9
XM-1505SX/1805GX
5-1. BLOCK DIAGRAM
SECTION 5
DIAGRAMS
5
6
7
3
1
1
12
13
10
9
8
1
2
3
4
PRE AMP
IC801(1/2)
LEVEL SHIFT
IC802(2/2)
LINE AMP
IC804(1/2)
BIAS
Q105
RV802
HPF
CNJ805-1
CNJ805-2
+12V
GND
L
R
FRONT
CNJ805-3
CNJ805-4
L
R
REAR
CNJ805-5
CNJ805-6
L
R
SUB
WOOFER
L
BTL
FRONT
BTL
REAR
SPEAKER
OUT
R
VR101
BIAS
TH803-
805
CN801
F901
INVERTER
Q913
INVERTER
Q912
DRIVER
Q910
DRIVER
Q911
CN803
SUB WOOFER
SPEAKER OUT
D844
POWER
D841
THERMAL
SWITCH
Q841
• Signal path
: AUDIO
: AUDIO
04
2
1
REG
Q901,902
(FRONT)
S801
HPF
S802
HPF
POWER
AMP
Q107
DIFFERENTIAL
AMP
Q102
DRIVE
AMP
Q104
POWER
AMP
Q106
REM
CN802
B+
(+45V)
B+
(+39V)
LED
DRIVE
Q801
LED842
OVER CURRENT
LED843
OFFSET
OFFSET
POWER
ON/OFF
Q903
DC DET
IC903
DC DET
IC811
D915
T902
D917
D918
D916
LINE
SWITCH
Q116
OVER LOAD
DET
Q108
5
6
7
3
2
1
5
7
PRE AMP
IC801(2/2)
LEVEL SHIFT
IC802(1/2)
LINE AMP
IC804(2/2)
DIFFERENTIAL
AMP
Q201
DRIVE
AMP
Q203
BIAS
Q205
VR201
BIAS
POWER
AMP
Q207
DIFFERENTIAL
AMP
Q202
DRIVE
AMP
Q204
POWER
AMP
Q206
LINE
SWITCH
Q216
OVER LOAD
DET
Q208
L
5
7
LINE AMP
IC808(2/2)
DIFFERENTIAL
AMP
Q301
DRIVE
AMP
Q303
BIAS
Q305
VR301
BIAS
POWER
AMP
Q307
DIFFERENTIAL
AMP
Q302
DRIVE
AMP
Q304
POWER
AMP
Q306
LINE
SWITCH
Q316
OVER LOAD
DET
Q308
3
2
1
5
6
7
PRE AMP
IC806(2/2)
LEVEL SHIFT
IC807(2/2)
5
6
7
R
3
1
LINE AMP
IC808(1/2)
DIFFERENTIAL
AMP
Q401
DRIVE
AMP
Q403
BIAS
Q405
VR401
BIAS
POWER
AMP
Q407
DIFFERENTIAL
AMP
Q402
DRIVE
AMP
Q404
POWER
AMP
Q406
LINE
SWITCH
Q416
OVER LOAD
DET
Q408
3
2
1
PRE AMP
IC806(1/2)
LEVEL SHIFT
IC807(1/2)
2
3
1
L+R
3
1
L.P.F AMP
IC810(1/2)
DIFFERENTIAL
AMP
Q501
DRIVE
AMP
Q503
MUTE
Q804
BIAS
Q505
VR501
BIAS
POWER AMP
Q507,509
(1505SX)
Q507,509,511
(1805GX)
POWER AMP
Q506,510
(1505SX)
Q506,510,512
(1805GX)
DIFFERENTIAL
AMP
Q502
DRIVE
AMP
Q504
LINE
SWITCH
Q516
OVER LOAD
DET
Q508
3
2
1
PRE AMP
IC809(1/2)
LEVELAMP
IC809(2/2)
5
6
7
PHASE SHIFT
IC810(2/2)
5
6
7
7
1
6
2
14
16
8
11
12
9
10
8
11
12
9
10
B+
(-45V)
B+
(-39V)
INVERTER
Q907
LED DRIVE
Q802
INVERTER
Q906
DRIVER
Q904
DRIVER
Q905
B+
(+30V)
B+
(+14.5V)
D905
T901
D907
D908
D906
B-
(-14.5V)
B-
(-30V)
B+ REG
Q909
B- REG
Q908
LED DRIVE
Q803
OFFSET DET
Q805-807
DC DET
Q914
B-
(-45V)
B+
(+39V)
DIFFERENTIAL
AMP
Q101
DRIVE
AMP
Q103
RV801
LEVEL
(FRONT)
VR803
LEVEL
(REAR)
VR804
HPF
(REAR)
RV801(1/2)
RV801(2/2)
VR803(1/2)
VR803(2/2)
X20
X1
ON
OFF
-14.5V
HIGH PASS
FILTER
IC803
IC901
IC902
RV806
PHASE
RV807
LPF
VR805
LEVEL
S851
TEST TONE
1805GX
1805GX
TEST TONE GENERATOR
IC805
1505SX
1505SX
S803
MODE (SUB WOOFER)
F F+R
RV802
(1/4)
RV802
(3/4)
RV802
(2/4)
VR804
(2/4)
VR804
(4/4)
VR804
(2/4)
VR804
(3/4)
RV802
(4/4)
DC-DC
CONVERTER
DC-DC
CONVERTER
(SUB WOOFER)
CN804
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