Sony CX-JV77 / JAX-V77 Service Manual ▷ View online
49
CX-JV77
•
IC Block Diagrams
– BD49 Board –
IC103
CXA2581N-T4
RW/ROM
RW/ROM
EQ ON/OFF
VOFST
VOFST
DVC
VC
VC
VC
RW/ROM
VC
DVC
30
29
28
+
–
+
–
DVC
VCC
DVC
27
26
25
24
RW/ROM
EQ
23
22
21
20
19
RFAC
VCA
VCC
+
–
DVC
+
–
+
–
RW/ROM
VC
RW/ROM
DVC
+
–
3
A
B
C
D
B
C
C
A
A
A
B
C
C
D
B
C D
D
+
–
1
2
APC AMP
5
6
7
8
9
4
RFAC
SUMMING
AMP
RW/ROM
APC-OFF
(Hi-Z)
RW/ROM
(H/L)
VOFST
VC
RW/ROM
+
–
10
11
GM
GM
18
17
16
B
D
A
C
13
14
15
12
EQ IN
LD
PD
GND
A
B
C
D
AC SUM
E
F
DVCC
DVC
RFAC
SW
DC OFST
RFDCI
RFDCO
VC
RFC
VFC
BST
RFG
VCC
CEI
CE
TE BAL
TE
FEI
FE
50
CX-JV77
IC504
PCM1748E/2K
– VMP43GY Board –
IC307
BD7600FV-E2
1
BUFOUT
2
STBY
3
IN
4
GND
8 BUFIN
7 VCC
6 OUT
5 OUTSAG
8dB
9dB
LPF
CLAMP
GND
VCC
SCK
1 2 3
7 8
4
5
6
SERIAL
INPUT
INTERFACE
10
9
BCK
DATA
LRCK
VOUTL
VOUTR
DGND
VDD
VCC
VCOM
AGND
FUNCTION
CONTROL
INTERFACE
SYSTEM
CLOCK
MANAGER
8 TIME OVER
SAMPLING
DIGITAL FILTER
WITH
FUNCTION
CONTROLLER
ENHANCED
MULTI-LEVEL
DELTA-SIGMA
MODULATOR
D/A
CONVERTER
D/A
CONVERTER
OUTPUT AMP AND
LOW-PASS FILTER
LOW-PASS FILTER
OUTPUT AMP AND
LOW-PASS FILTER
LOW-PASS FILTER
ZERO DETECT
POWER SUPPLY
12
11
ZEROL
ZEROR
15
14
ML
MC
16
13
MD
SYSTEM
CLOCK
1
2
3
4
5
6
7
8
9
CONTROL LOGIC
TSD
VREF
OUT2
OUT1
RNF
VM
VCC
FIN
GND
RIN
– DRIVER Board –
IC701, 712
BA6956AN
51
CX-JV77
IC506
BU2507FV-E2
14
GND
13
AO1
12
DI
11
CLK
10
LD
9
AO6
8
VCC
1
VSS
(VREFL)
2
AO2
3
AO3
4
RESET
5
AO4
6
AO5
7
VDD
(VREFH)
14BIT
SHIFT REGISTER
ADDRESS
DECODER
DECODER
D0 – D9
D10 – D13
10BIT R-2R
D/A CONVERTER
10BIT R-2R
D/A CONVERTER
10BIT LATCH
10BIT LATCH
10BIT R-2R
D/A CONVERTER
10BIT LATCH
10BIT LATCH
10BIT R-2R
D/A CONVERTER
10BIT R-2R
D/A CONVERTER
10BIT LATCH
10BIT R-2R
D/A CONVERTER
10BIT LATCH
CH2
CH3
CH4
CH5
CH1
CH6
52
CX-JV77
– MAIN Board –
IC101
BD3401KS2
1
D1
2
D2
3
E1
9
TAPE
A1
10
TAPE
A2
11
TAPE
B1
12
TAPE
B2
13
RECNF2
14
RECOUT2
5
PBNF2
6
PBOUT2
7
PBOUT1
4
E2
8
PBNF1
15
RECOUT1
16
RECNF1
33 VOLOUT1
34 BBNF1
35 BBIN1
36 VIN1
DIGITAL
CONTROL
64
C2
+
−
+
−
+
−
+
−
ALC
ATT
ATT
ALC
DI-LIMITER
SURROUND
17
ALC
18
SC
19
SI
27
LF3
28
LF2
29
LF1
30
BBIN2
20
VDD
21
GND
22
VCC
23
1/2 VCC
24
FILTER
+
−
32
VOLOUT2
+
−
25
SWOUT
26
LF4
+
−
LOW-PASS
FILTER
SOFT
SWITCH
BUFFER
MIX
MIC AMP
+
−
31
BBNF2
38 VIN2
37
TONE
OUT1
OUT1
48 MNF2
+
−
+
−
+
−
+
−
+
−
+
−
+
−
+
−
63
C1
62
B2
61
B1
60
A2
59
A1
45 MNF1
44 BNF1
42 BOUT2
41 BNF2
39
TONE
OUT2
OUT2
40 AMS OUT
47 MOUT2
46 MOUT1
43 BOUT1
+
−
58
MIC
56
SAOUT1
55
SAOUT2
57
CAP
+
−
INPUT
SELECT
+
−
+
−
54
LINEOUT1
53
LINEOUT2
52
SUR2
51
SUR1
49
TNF2
50
TNF1
TONE
CONTROL
TONE
CONTROL
+
+
+
+
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