CENTER/SURROUND AMPLIFIER PART - CIRCUIT DIAGRAM
-32V
-30V
CS_ON = +5V CS OFF = 0V
-32V
-32V
-32V
-31V
+3.1V
-32V
0V
-32V
0V
-32V
-32V
-32V
-32V
-32V
+32V
0V
0V
-32V
0V
0V
-32V
+32V
-32V
+32V
-32V
-32V
-32V
Voltages measured at nominal mains voltage and low output signal
V Vdc measured during AMPLIFIER OFF (mute)
.... Vdc measured during AMPLIFIER ON
3951 F8
3952 F9
3953 F9
3954 F8
3955 D3
3956 D3
3957 E2
3962 B7
3963 B7
3964 B7
3965 B7
5903 C6
5911 C6
5912 C6
6901 D7
6902 D7
6903 C6
6904 F4
6905 E2
#
#
#
#
#
#
# : PROVISION
3919 B8
3921 D7
3922 D7
3923 D5
3924 B6
3925 A4
3926 B3
3927 B2
3928 B2
3929 D2
3930 D2
3931 B6
3932 D2
3933 D1
3934 F1
3935 E1
3936 D2
3937 E2
3938 D7
C
3939 E3
3940 D7
3941 F3
3942 F3
3943 F4
3944 F4
3945 F4
3946 F5
3947 F6
3948 F6
3949 F7
3950 F7
TO AV PCB
TO SUPPLY PCB
B
C
D
E
F
1921 B9
1922 B1
1925-A C9
GND
SURROUND RIGHT
GND_SL
-VL
-VL
3918 B8
CENTER
9360 C2
SR
6906 E1
6907 F2
7901 F8
7902 F6
7903 F5
7904 E3
7905 F2
7906 E1
7907 D2
7908 D3
7930 B4
9351 D7
9352 D8
9353 D6
9358 B2
9359 C2
#
F
3917 B8
+VL
2922 D8
2923 D8
2924 F5
2925 F6
2926 F8
2927 F3
2928 E2
2929 D3
2930 D4
2931 B4
2932 D6
2933 D6
2943 D5
2944 B4
2945 E1
3901 B2
3902 C2
3903 C2
3904 C2
3905 C3
3906 C3
3907 E4
3908 D4
3909 D6
3910 D6
3911 C6
3912 C6
3913 D7
3915 D7
2918 B3
2919 A4
DC
BC546B
GND_pa
GND_pa
A
CS_ON
SL
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
A
B
C
D
E
2920 A3
SURROUND LEFT
+VL
GND_SR
AMP OFF
GND_C
2921 B6
BC556B
1925-B C9
1928 A9
2901 B1
2902 B1
2903 C2
2904 C2
2905 C3
2906 C3
2907 C4
2908 C4
2909 E4
2910 D4
2911 E4
2912 D4
2913 D8
2914 D8
2915 D8
2916 D9
2917 B2
pa
3940
5K6
2K7
3965
BC547B
7907
GND_C
470R
3902
3962
82K
10n
2945
3957
100K
6907
BZX79-C3V3
82K
3964
GND_SL
2u2
2917
3931
4R7
1921
2
1
1u
5903
2927
22n
0R22
3943
2912
47u
5K6
3915
2930
10u
3922
5K6
3930
10K
3936
100K
3955
560R
NF2
NF3
17
8
OUT1
9
OUT2
OUT3
20
PT1 6
PT2 7
1
SUBSTR
3933
33K
5
+VC
11
+VP
4
-VC1
3
-VC2
-VC3
19
10
-VP
14
CCC
12
IN1
16
IN2
IN3
18
2
NC
13
NF1
15
3923
22R
STK496-270
7930
pa
3909
56K
1K
3948
3947
1K
2908
56K
3906
470p
2904
2u2
7903
BC547B
BC547B
7902
9360
pa
pa
3903
100K
2932 33p
3927
100K
4n7
2915
3919
47K
pa
2918
1n
10K
3937
2916
4n7
82K
3913
560R
3908
3921
82K
22n
2925
pa
pa
3938
82K
10u
2928
GND_SR
9353
8
9
GND_SL
1928
12 13
1
10
11
2
3
4
5
6
7
7905
GND
JL
2924
22n
6906
1N4148
GND
2u2
2903
3905
56K
GND_SL
7904
2926
22n
0R22
1N4148
6905
3907
560R
3953
100K
3932
4
5
100K
3904
pa
EH-S
1922
1
2
3
2943
47n
10u
2931
3949
0R22
2901
4n7
0R22
3950
2914
100n
pa
56K
3910 33p
2933
47K
3918
2905
1n
82K
3963
2929
1m
GND_SR
1u
5912
1K
3946
3945
1K
2907
470p
pa
BC557B
7906
9359
3917
47K
3929
100K
6901
BZX79-C15
GND_C
pa
BZX79-C15
6903
GND_C
7908
BC547B
9352
pa
100K
3939
7901
BC547B
pa
1925-A
2
1
0R22
3952
4n7
2902
2909
220p
47u
2911
2923
4n7
1K
3951
3912
4R7
GND_SR
9358
3926
56K
2919
220p
6904
1N4148
3956
1K
9351
3942
1K
3941
22K
1n
2906
47u
2920
4R7
3911
pa
3954
1K
5911
1u
3944
0R22
220p
2910
pa
3928
470R
2922
100n
1925-B
3
4
47K
3934
100n
2913
pa
BZX79-C15
6902
3924
56K
3925
560R
2944
470p
2921
33p
3935
10K
pa
pa
CS_ON
-VL
AMPOFF
+VL
-VL
AMPOFF
CS_ON
DC
+VL
3901
470R
DC
Note : Some values may varies, see respective parts list for correct value.
3139 118 53260...87310 for...3428 pt1 dd wk0023
11-9
11-9
PCS 103 866
Содержание FW-D5/21
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