Sony STR-K990 Service Manual page 42

STR-K990
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– VIDEO Board –
IC203 NJM2595D
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L 13942296513
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42
http://www.xiaoyu163.com
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75Ω
Driver
6dB
Amp
7 6 5 4
IC304 NJM2586AL
12 13 14 15 16
BIAS BIAS BIAS
CONT2
CONT2
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BIAS BIAS BIAS
7
11 10 9 8
http://www.xiaoyu163.com
2 9
8
12 13 14 15
75Ω
Driver
6dB
Amp
Q Q
3 6 7 1 3 1 5
3 2
22
17 18 19 20 21
75Ω 75Ω 75Ω
DRIVER DRIVER DRIVER
6dB 6dB 6dB
AMP AMP AMP
CONT1
CONT1 CONT1
CONT2
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.
BIAS BIAS BIAS
6 5 4 3 2 1
9 4 2 8
16
0 5 8 2 9 9 4 2 8
6dB
Amp
75Ω
Driver
1
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9 9
9 9