Sony HCD-RV7 Service Manual page 54

HCD-RV7/RV8
Q Q
3 7 6 3 1 5 1 5 0
• IC Block Diagrams
– BD Board –
IC103 CXA2581N-T4
RW/ROM
A
–
B
+
C
DVC
D
DVC
VCC
DVC
– RW/ROM
VOFST
+
VC
VC
LD 1
PD 2 APC AMP
EQ ON/OFF
EQ IN 3
RW/ROM
RFAC
AC SUM 4 SUMMING
AMP
VOFST
B
C
–
GND 5
A
+
D
A B C D
DVC
A
A 6
B
VC
B 7
C
T E
L 1 3 9 4 2 2 9 6 5 1 3
C 8
RW/ROM
D
D 9
RW/ROM
E 10 GM
–
+
F 11 GM
VC
APC-OFF
RW/ROM
(Hi-Z)
SW 12
RW/ROM
RW/ROM
(H/L)
DVCC 13
B
VOFST
DVC
D
–
DVC 14 A
+
C
DVC
VC
RW/ROM
RFAC 15
w w w
– DRIVER Board –
IC701 BA6956AN
TSD
30 DC OFST
29 RFDCI
–
28 RFDCO
+
1 2 3 4 5 6
VC
27 VC
26 RFC
EQ 25 VFC
24 BST
RFAC
23 RFG
VCA
VCC 22 VCC
21 CEI
–
20 CE
+
19 TE BAL
18 TE
17 FEI
–
16 FE
+
x a o
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– VIDEO Board –
IC301 BA7046F
H. OSC 1 H. OSC
HD 2
CONTROL LOGIC
3
SYNC
4 V. SEPA
7 8 9 VD
IC304 NJM2209M
14 13 12
Q Q LPF
3 7
CONTROL
LOWER
LIMITER
(2)
1 2 3
IC504 PCM1748E/2K
16 15 14 13 12
ZERO DETECT
SYSTEM
FUNCTION
CLOCK
CONTROL
MANAGER
INTERFACE 8 TIME OVER
DIGITAL FILTER
SYSTEM
CLOCK
CONTROLLER
SERIAL
INPUT
INTERFACE
u 1 6 3
y
1 2 3
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2 4
8 9 9
IC303 NJM2255 (TE2)
PHASE
PHASE
8
COMP
COMP 8
7 VCC
SYNC
6 VIDEO
HUE ADJUST
SEPA
5
GND
1
IC307 BD7600FV-E2
BUFOUT 1
STBY 2
11 10 9 8
IN 3
6 3 1 5 1 5 0 8 9
SECONDARY LOWER CLAMP
DIFFERENTIATION LIMITER ( SYNC )
GAIN ADJ (1) CHIP
GND 4
GND
SWITCH
4 5 6 7
11 10
D/A OUTPUT AMP AND
CONVERTER LOW-PASS FILTER
SAMPLING
ENHANCED
MULTI-LEVEL
WITH
DELTA-SIGMA
FUNCTION
MODULATOR
D/A m OUTPUT AMP AND
CONVERTER LOW-PASS FILTER
c o
POWER SUPPLY
.
4 5 6 7 8
2
8 9 9
7 5
6
SATURATION
+Ø
ADJUST
(COLOR BURST)
SATURATION
ADJUST
–X (COLOR BURST)
2 3 4
8dB
8 BUFIN
VCC
CLAMP
7 VCC
9dB
LPF
6 OUT
2 4 9 8 2 9 9
5 OUTSAG
9