Sony HCD-ED2 Service Manual - Page 10
IC451, BU1922, IC191, BA6218
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NC VDDA B IN MUX • RDS Board IC451 BU1922 RDCL TS7 OSCO OSCI VDDD VSSD TEST TSTLD 16 15 14 13 12 11 10 9 QUALITY BIT GENERATOR OSCILLATOR AND DIVIDER RECONSTRUCTION FILTER 57kHz BANDPASS (8th ORDER) TEST LOGIC AND OUTPUT SELECTOR SWITCH ANTIALIASING FILTER DEFFERENTIAL DECODER BIPHASE SYMBOL DECODER 1 2 3 4 CONTAS LOOP VARIABLE AND FIXED DIVIDER CLOCKED COMPARATOR CLOCK REGENERATION AND SYNC VP1 REFERENCE VOLTAGE 5 6 7 8 SCOUT CIN VSSA Vref RDDA QUAL • TAPE PREAMP Board IC191 BA6218 6 VCC A OUT 7 POW GND 8 B OUT 9 A IN 1 5 GND 2 3 4 GND 29
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• RDS Board
IC451
BU1922
QUALITY BIT
GENERATOR
DEFFERENTIAL
DECODER
BIPHASE
SYMBOL
DECODER
OSCILLATOR
AND
DIVIDER
57kHz
BANDPASS
(8th ORDER)
CONTAS LOOP
VARIABLE AND
FIXED DIVIDER
REFERENCE
VOLTAGE
ANTI-
ALIASING
FILTER
CLOCKED
COMPARATOR
TEST LOGIC AND OUTPUT
SELECTOR SWITCH
RECONSTRUCTION
FILTER
14
15
16
13
12
11
10
9
3
2
1
4
5
6
7
8
CLOCK REGENERATION
AND SYNC
VP1
RDCL
TS7
OSCO
OSCI
V
DDD
V
SSD
TEST
TSTLD
QUAL
RDDA
Vref
MUX
V
DDA
V
SSA
CIN
SCOUT
• TAPE PREAMP Board
IC191
BA6218
1
2
3
4
6
5
9
8
7
A OUT
POW
GND
B OUT
A IN
GND
B IN
NC
GND
VCC