Sony HCD-EH15 Service Manual page 22

HCD-EH15
IC401 BD3881FV
28 27 26 25
1 2 3 4
IC861 PT2579SN
16
BIPHASE
SYMBOL
DECODER
QUALITY BIT
DIFFERENTIAL
GENERATOR
DECODER
1 2
22
24 23 22 21 20 19
VOLUME
VOLUME
5 6 7 8 9
15 14 13
OSCILLATION
&
DIVIDER
COSTAS LOOP
VARIABLE & COMPARATOR
FIXED DIVIDER
CLOCK
REGENERATION
& SYNC
REFERENCE
VOLTAGE
3 4 5 6
18 17 16 15
BASS
BASS
TREBLE
LOGIC
CONTROL
TREBLE
12
10 11 13 14
12 10 9
11
TEST LOGIC &
OUTPUT SELECTOR
SWITCH
CLOCKED
ANTI-ALIASING
FILTER
57 kHz
BAND PASS
(8th ORDER)
RECONSTRUCTION
FILTER
7 8