Sony CX-JT7 / JAX-PK7 / JAX-T7 Service Manual ▷ View online
CX-JT7
53
53
D902
D905
D903
D904
C902
CN902
RY902
F906
JW906
JW905
F905
F902
JW918
JW912
JW910
JW902
JW909
CN901
JW917
D906
JW915
C901
PT902
PT901
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
6-32. SCHEMATIC DIAGRAM – TRANSFORMER BOARD – (MX model)
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
(Page 44)
CX-JT7
54
54
• Waveforms
– BD Board –
– BD Board –
1
IC721
4
(RF) (CD Play Mode)
2
IC721
qd
(TE) (CD Play Mode)
3
IC721
qg
(TE) (CD Play Mode)
4
IC721
rk
(XOUT)
1.3 Vp-p
Approx.
180 mVp-p
180 mVp-p
Applox.
150 mVp-p
150 mVp-p
4 Vp-p
59.1 ns
ws
IC901
qg
(CF1)
qa
Q223 (Base) (REC Mode)
qs
Q223 (Collector) (REC Mode)
– MAIN Board –
wa
IC901
qs
(XT1)
– PANEL Board –
1.7 Vp-p
11.3
µ
s
15.8 Vp-p
11.3
µ
s
2.4 Vp-p
30.5
µ
s
2.6 Vp-p
116 Ns
• IC Block Diagrams
– BD Board –
– BD Board –
IC721
LC78646E-E
60
59
58
57
56
55
54
53
52
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38
SLCO
SLCIST
EFMIN
RF
FDO
SPDO
SLDO
GPDAC
FDO
SPDO
SLDO
GPDAC
CONT4
CONT5
SBCK/CONT6
SBCK/FG
DEFECT
CONT4
CONT5
SBCK/CONT6
SBCK/FG
DEFECT
V/P
V/P
FSEQ
MONI1
MONI2
MONI3
MONI4
MONI5
V/P
FSEQ
MONI1
MONI2
MONI3
MONI4
MONI5
VSS
VDD(3.3V)
69 68 67 66
65 64 63 62 61
VSS
VDD5
DRF
RES
WRQ
DO
DI
CL
CE
79
78 77 76 75 74 73 72 71
LDS
80
LDD
FR
VVDD
PCKIST
VVSS
PDO2
PDO1
CONT1
CONT2
70
CONT3
WRQ
DO
DI
CL
CE
CE
FR
VVDD
PCKIST
VVSS
SBCK/FG
PDO2
PDO1
CONT1-3
SBCK/CONT6
CONT4,5
CONT4,5
DRF
WRQ
DO
DI
CL
CE
LDS
LDD
LDS
LDD
FR
VVDD
PCKIST
VVSS
PDO2
PDO1
CONT1
CONT2
CONT3
RFVDD
RFVSS
FIN1
FIN2
TIN1
TIN2
VREF
FIN1
FIN2
TIN1
TIN2
REFI
REFI
DEFECT
FE
TEC
TE
RFMON
JITTC
ADAVDD
ADAVSS
TDO
SLCO
SLCIST
EFMIN
RF
FIN1
FIN2
TIN1
TIN2
VREF
REFI
FE
TEC
TE
RFMON
JITTC
JITTC
ADAVDD
ADAVSS
ADAVDD
ADAVSS
TDO
DATA
DATACK
LRSY
ASDFIN
ASDACK
ASLRCK
DATA
DATACK
LRSY
RVDD
RVSS
RCHO
LCHO
LVSS
LVDD
ASDFIN
ASDACK
ASLRCK
16MOUT
EFLG
C2F
FSX/16MIN
EFLG
C2F
FSX/16MIN
XVSS
XIN
XOUT
XVDD
16MOUT
XVSS
XIN
XOUT
XVDD
XVSS
XIN
XOUT
XVDD
RVDD
RCHO
RVSS
LVSS
LCHO
LVDD
DATA
DATACK
LRSY
ASDFIN
ASDACK
ASLRCK
16MOUT
EFLG
C2F
FSX/16MIN
XVSS
XIN
XOUT
XVDD
RVDD
RCHO
RVSS
LVSS
LCHO
LVDD
39 40
DOUT
TEST
51
50
49
48
47
46
45
44
43
42
41
+
–
MIX
PH
BH
MONI
CONT
CONT
AGC
+
–
+
–
+
–
+
–
+
–
+
–
LPF
TBAL
TBAL
RAM
TDO
TRACK JUMP
SW
D/A
APC
SUBCODE DECODE CRC
GENERAL PURPOSE
PORTS
8FS
DIGITAL FILTER
1BIT DAC
LPF
ERROR
CORRECTION
AUDIO CD
MONITOR SIGNAL SELECTOR
EXTERNAL
AUDIO IN
AUTO ADJUST
FRAME SYNC
DETECT,PROTECT,INSERT,
EFM DECODE
A/D
CLOCK
GENERATOR
COMMAND
INTERFACE
INTERFACE
SERVO PROCESSOR
LEVEL SET
+
–
S/H
SW
DRF
DRF
ATTENUATION
DEEMPHASIS
INTERPOLATION
MUTE
RUPTURE DEFECT
SLICE LEVEL
CONTROL
CLV,CAV
CONTROL
SERIAL
OUT
AUDIO OUT
RAM
JITTER
DETECT
PLL
VCEC
FE
TE
TEC
RF
RFMON
VREF
SPDO
SLDO
GPDAC
FSEQ
MONI1-5
FDO
LPF
LPF
EQ
55
CX-JT7
– 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
– 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
56
CX-JT7
IC303
NJM2156M (TE2)
– PANEL Board –
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
10
+
6
OUTA
7
BBE
14
VREF
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
+
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