Sony CX-JTV8 / JAX-TV8 Service Manual ▷ View online
CX-JTV8
49
49
6-26. SCHEMATIC DIAGRAM – TRANSFORMER Board –
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
D902
D905
D903
D904
C902
CN902
RY902
F906
JW906
JW905
F905
F902
JW918
JW916
JW914
JW902
JW909
CN901
S901
JW917
JW915
D906
C901
PT901
PT902
1SS355
1SS355
1SS355
1SS355
470
25V
25V
11P
T8AL
250V
250V
T8AL
250V
250V
T2.5AL
250V
2P
1SS355
0.1
SUB POWER TRANSFORMER
MAIN POWER TRANSFORMER
BUILT IN TRANSFORMER
NOT REPLACEABLE:
∗
(AC IN)
VH(AC)
VH(AC)
GND
VL(AC)
VL(AC)
VM(AC)
VM(AC)
FIL-1
FIL-2
P-ON
EVER+10V
-1
-2
VOLTAGE
100-120V
220-240V
AC
(Page 42)
Ver 1.2
CX-JTV8
50
50
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
• IC Block Diagrams
– BD Board –
– BD Board –
IC103
CXA2581N-T4
– DRIVER Board –
IC701, 712
BA6956AN
1
2
3
4
5
6
7
8
9
CONTROL LOGIC
TSD
VREF
O
UT2
O
UT1
RNF
VM
VCC
FIN
GND
RIN
1
BUFOUT
2
STBY
3
IN
4
GND
8 BUFIN
7 VCC
6 OUT
5 OUTSAG
8dB
9dB
LPF
CLAMP
GND
VCC
– VMP42DN Board –
IC307
BD7600FV-E2
IC504
PCM1748E/2K
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
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
51
CX-JTV8
– MAIN Board –
IC201
HA12237F
31
PB-NF1 (L)
32
AIN (L)
33
RIP
34
BIN (L)
35
REC-RETURN
36
GND
37
BIN (R)
38
NC
39
AIN (R)
40
PB-NF1 (R)
1
PB-NF2 (R)
2
PB-EQ (R)
3
EQOUT (R)
4
TAI (R)
5
PBOUT (R)
6
NC
7
RECIN (R)
8
ALC (R)
9
NC
10
RECOUT (R)
15 REC MUTE OFF/ON
14 MUTE ON/OFF
13
A/B
(REC RETURN ON/OFF)
(REC RETURN ON/OFF)
12 HIGH/NORM
11 ALC ON/OFF
30
PB-NF2 (L)
29
PB-EQ (L)
28
EQOUT (L)
27
TAI (L)
26
PBOUT (L)
25
NC
24
RECIN (L)
23
ALC (L)
22
NC
21
RECOUT (L)
EQ
ALC
19 IREF
18 GND
17 ALC DET
EQ
20 TEST MODE
16 VCC
93/120
(HIGH/NORM)
MUTE
A
B
A
B
RETURN SW
RETURN SW
93/120
(HIGH/NORM)
MUTE
IC301
M61529FP-D60G
1
REF
2
MIC
3
INA1
REF
EXTERNAL
INPUT ATT
INPUT ATT
INPUT
ATT
4
INB1
5
INC1
6
IND1
7
RECA1/INEX1
8
RECB1
9
TMI1
10
TMO1
11
TCA1
12
TCB1
13
TCC1
14
TOUT1
16
BB A1
17
BB B1
15
VOLIN1
VOCAL
CUT
TONE ATT
+
TONE CONTROL
(BASS/MID/TREBLE)
ELECTRICAL
VOLUME
18
OUT1
19
SAOUT
20
VCC
BASS
BOOST
21
DATA
MCU
INTERFACE
42
SUR1/DPL1
41
SUR2/DPL2
40
INA2
INPUT
ATT
39
INB2
38
INC2
37
IND2
36
RECA1/INEX2
35
RECB2
34
TMI2
33
TMO2
32
TCA2
31
TCB2
30
TCC2
29
TOUT2
27
BB A2
26
BB B2
28
VOLIN2
+
TONE ATT
TONE CONTROL
(BASS/MID/TREBLE)
ELECTRICAL
VOLUME
25
OUT2
24
SWOUT
23
GND
BASS
BOOST
22
CLOCK
+
SURROUND
OR
DPL BUFFER
+
52
CX-JTV8
IC303
NJM2156M (TE2)
IC501
MM1614A
2
5
VIN
4
VOUT
GND
1
CONT
3
NOISE
DRIVER
THERMAL
SHUTDOWN
BIAS
REFERENCE
+
–
CURRENT
LIMITTER
LIMITTER
BBE
BIAS
MACH3
19 18
HOUTB
HINB
20
INB
17 16
LOUTB
LINB
13
GIN
12
GOUT
11
GND
+
+
15
OUTB
BBE
2
3
HOUTA
HINA
1
INA
4
5
LOUTA
LINA
8
LPOUT
9
LPIN
V+
10
+
6
OUTA
7
BBE
14
VREF
– PANEL Board –
IC402
BU9262AFS
1
N. C.
2
TESTB
3
SCK
4
SLT
5
SI
6
CLKO
7
CLKI
8
N. C.
9
DSOUT
10
TESTOUT
11
LPF1I1
12
LPF1I2
13
LPF1O
14
ADI
15
ADO
16
GND
32 MIXIN
31 MICIN
30 VDD
29 LCIN
28 RCIN
27 FBOUT
26 LCOUT
25 RCOUT
24 VREF
23 DSIG
22 VOIN
21 LPF2O
20 LPF2I2
19 LPF2I1
18 DAO
17 DAI
SERIAL
CONTROL
CIRCUIOT
CIRCUIOT
CLOCK
A/D
CONVERETR
LOW-PASS
FILTER
INPUT
MIX
SELECTOR
DLYVOL
MIX OUT
REFERENCE
RESET
FBVOL
LOW-PASS
FILTER
D/A
CONVERETR
PROCESSOR
RAM
TEST OUT
CONTROL
LOGIC INPUT
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