Sony XM-7557 Service Manual page 49

• SCHEMATIC DIAGRAM – AMPLIFER SECTION (3/3) –
AMPLIFIER BOARD
R742 R743
Q704 C759
0.047 20 20
DRIVER-2SC2712-Y
DRIVER
9.5
R717
R716
11.8 R741
1k
470
1k
C747 0.022
R744
9.4
10.1
4.3k
9.4
Q714
46+
C746 0.022
2SC2713
–2.4
–2.3
R745 2SC3074-Y
1k C745 0.01
(TE16L)
D707 Q705
INVERTER
02CZ5.6Y 2SC3074-Y (TE16L)
INVERTER
12.6
R713 22k
R712 R715
470 47k
D706
RD12FB2
0.1
Q702
Q701 2SC2712-Y
1 3 2 1
2SA1358-Y
CNP803 CNP708
3P 2P
CNB803
CNJ708 2P
3P
1 3 1 2
9.5
Q703
2SB1375
12.6
POWER CONTROL
FN801
DC FAN MOTOR
B+
Q804-807, 809
2SC2712-Y
R815
GL-5ED60
R811 R812
2.2k
470 470
0
7 7
B+ B+
THERMAL
R809 R810 0
680 680
Q803
R814
GL-5ED60
R807 R808
2.2k
470 470
0
OFFSET
1 1
R805 R806 0
680 680
Q802
R813
R803 R804 GL-5ED60
2.2k
470 470
0
OVERCURRENT
R801 R802
0
680 680
GL-5ED60 Q801
HI-CURRENT
GL-5ED60
B+
SUB WOOFER
HI-VOLTAGE
1
+12V
GND
+12V
3
4CH
CNJ801
1P
REMOTE
TO TO
AMPLIFIER AMPLIFIER
BOARD (1/3) BOARD (2/3)
B+
D708
+34V
C720
D709
100 C722
50V
0.047
D713
C724
D712
220 C726
T701
D715
16V
0.1
L701
BL01RN1-A62
0.45µH C725
220
C727
D714
16V
0.1 –14V D716
UDZ12B
R720
C721
Q706 D710
100 1M
50V
C723
D711
0.047
–34V B–
TH701
D707-711 D712-715
11EFS2-TB5 11EQS04-TA1B
Q701, 702
FAN MOTOR
DRIVE
1
CNB805 10P
1
12.8 12.8
R824 C801 R828
10k 470P 10k
Q808, 810
2SA1162-Y
12.8 12.8
R834
0 0 0
3.3k
Q810
Q808 0
R821 R820 R823 C805
R826 R829
R825 R830
10k 10k 10k
3.3k 3.3k 22 16V
10k 10k
12.8
0 R832 47k
12.8
D806
0 0 0 0
Q805 Q804 Q806 Q807 Q809 R833 1SS184
R822 R827
C804 3.3k
C802 10k -TE85L
10k
R831
22 470P
10k
16V
Q804-806 Q807, 808 Q809, 810 C948
0.001
LED DRIVE OVER OFF SET
CURRENT
12.9 11.8
B+
Q917, 918
DRIVER
5
R818 R819
TH904
470 470
22k
R943
R936 C922
TH903
10k 0.01 22k
22k
R816 R817
470 470
5
R937
10k
0
R938 R942
470k 680
C925
R941
5 100/10V
1k
R940 R945
0
47k 220k
C921 C938
C924
1000P 0.1
R939
22/16V
10k
F903 25A
D907
1SS184-TE85L
F904 25A
B+
C934
B+
F901 25A 0.001
B+
F902 25A
C904
R907 C906
1000P
4.7k 22 16V
Q905
C902
1000P 2SC2712-Y
0 R910
0.7
B+ SWITCH 220k
R901
10k
D902
C907
R908
02CZ5.1Y-TE85L 0.1
3.3k 100 10V
5.2
R902 R906
330
1.5K
5.9
R905 Q903
5.3
4.7k
2SC2712-Y
R904
B+ SWITCH
1k
B+
12.6
R903
3.3k
13.2 13.2
Q902
2SA1162-Y
13.9
B+
B+ POWER ON/OFF
Q901 12.9
2SB1243-QR-TV2
B+ SWITCH
7
R729 10K
12.7
R726
10K
12.7 Q712
12.7 Q710 2SC2712-Y
2SC2712-Y
R723 C728 C730 C731 C732 C733
0 0 0
10K 1000P C729 47/16V 1000P 47/16V 1000P 47/16V
Q708
R725 R728
1M 1M
2SC2712-Y
Q709
2SA1162-Y
Q711 Q713
R721
2SA1162-Y 2SA1162-Y
12.7 –27.6 –27.6
10K
R730
R724 R727
0.2
10K
10K 10K
Q707
Q707-Q713
R722
2SC2712-Y
OFF SET
10K
B–
–27.6
10
CNP805 10P
S802 NFB
10
ON
OFF
R838 33 1W
D807
26.8 26.7
1SS184-TE85L
R836 Q812
R835 1K
0.3 2SA1162-Y
68k
SWITCH
R837 26
10K
0.9
Q811
D808
IC903
2SC2712-Y
02CZ6.8-TE85L
SWITCH
TEMPERATURE
DETECT
S801
0.2 IC903
MODE (HI-VOLTAGE HI-CURRENT)
IC813 PS2501-1-K
C942
2.5
0.001
FAN MOTOR
23.8
5
DETECT
D911
–22.5
02CZ15-TE85L
C943 0.001
–25.8
12.8
H905 22k R951 R952
4.7k 220
R956
Q919
150
–23.8
2SC2712-Y
R953
Q921
R947 1k SWITCH
–26.5
10k
R961
12.8
22
12.8 0.4
R967 R969
R965
R962 2.2 2.2
2.2
0.4 13.8 13.8
R955 1k
150
IC904
C929
13.8
UPC494GS-T1
2200 16V
Q920 Q922 Q924 Q926 Q928
0.1
C930
0.4 0.4 0.4 2200 16V
12.8
C931
0.4
2200 16V
C932
R954
C927 2200 16V
Q923 Q925 Q927
1k Q929
22/16V
0.4 0.4
0.4
R946
220 R948 R949 0.1
R964
10k
22k
22
0.4
13.8 13.8 13.8
Q920, 921
IC904
2SB1238PQR-TV2
R960 R966 R968 R970
DRIVER 1k 2.2 2.2 2.2
R963
CONVERTER
1k
Q922, 923
B+
2SD1859TV2Q DRIVER
Q924-929 MTP75N06HD INVERTER B+
Q911-916 MTP75N06HD INVERTER
B+ Q909, 910
2SD1859TV2Q R926
R930 R932 R934
2.2
DRIVER
2.2 2.2 2.2
R924
1k
R927 0.5 13.8 13.8
13.8
1K
0.4
0.1
R911 C913
220 0.4 2200 16V
0.4 0.4
R919
Q909 Q911 Q913 Q915
C914
1k
2200 16V
C915
2200 16V
Q907 Q910 Q912 Q914 Q916
0.4 0.4 0.4
0.1
12.8
R928
IC902 C916
13.8 13.8
1k 13.8 2200 16V
UPC494GS-T1
R920
150
R931 R933 R935
R929 Q906
2.2 2.2 2.2
12.8
22
2SC2712-Y
Q907, 908 SWITCH
Q908 0.5
2SB1238PQR-TV2
DRIVER
R918
12.8 –24.1
1k IC901
12.8
R921 TH902
5 PS2501-1-K –22.5
22k
150
C940 0.001
IC901
C941
0.001
TEMPERATURE D904
IC902 D903
2.5 23.8
CONVERTER DETECT 02CZ15-TE85L
RD36FB2
7
TO AMPLIFIER BOARD (2/3)
B–
R731
C735
1M
8200/35V
C736
8200/35V
B–
B+ B– B– B+
B+ B– B– B+
B+
B+
B–
C946
0.001
D912
FCH20A15
T902 C935
L904
220
BL01RN1-A62
35V
µ
0.45 H
C936
D913
220
FRH20A15
35V
C947
0.001
B+
C911
D906
0.1
FRH20A15
B–
T901
C918
220 35V
L902
BL01RN1-A62
C917
µ
0.45 H 220 35V
B+
D905
FCH20A15
–26.8
R916 R917
B– B+
4.7k 220
–26.2
B+
XM-7557