Sony CX-JT7 / JAX-PK7 / JAX-T7 Service Manual ▷ View online
CX-JT7
25
25
6-4.
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Printed Wiring Board:
•
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Note on Schematic Diagram:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
2
: nonflammable resistor.
•
C
: panel designation.
•
A
: B+ Line.
•
B
: B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
(
no mark : FM
(
) : CD PLAY
[
] : TAPE PLAY (DECK-A)
{
} : TAPE PLAY (DECK-B)
〈〈
〉〉
: REC
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: TUNER (FM/AM)
J
: CD PLAY
E
: TAPE PLAY (DECK-A)
d
: TAPE PLAY (DECK-B)
G
: REC
j
: MD (VIDEO) IN
N
: MIC INPUT
• Abbreviation
E51
: Chilean and Peluvian models
MX
: Mexican model
• Circuit Boards Location
Caution:
Pattern face side:
Pattern face side:
Parts on the pattern face side seen from
(Conductor Side)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Component Side)
the parts face are indicated.
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
Q
B
These are omitted.
C
E
Q
• Indication of transistor.
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
BD board
MOTOR (TB) board
TUNER PACK
DRIVER board
MAIN board
POWER board
TRANSFORMER board
MICROPHONE board
(MX, E51)
(MX, E51)
HEADPHONE board
PANEL board
CD BUTTON board
MOTOR (LD) board
SW board
SENSOR board
CX-JT7
26
26
6-5.
PRINTED WIRING BOARD – BD Board –
•
See page 25 for Circuit Boards Location.
:Uses unleaded solder.
C860
R860
C817
FB803
FB805
FB804
FB806
R806
R807
R807
R747 R746
3
4
5
IC801
IC802
BD BOARD
(COMPONENT SIDE)
1-688-077-
(11)
11
OPTICAL
PICK-UP
BLOCK
(KSM-213DCP)
IC722
IC803
IC721
BD BOARD
(CONDUCTOR SIDE)
1-688-077-
(11)
(SUFFIX-11)
(SUFFIX-13)
11
M702
(SPINDLE)
M
+
–
M701
(SLED)
M
+
–
S701
(LIMIT IN)
TP
(RF)
TP
(FE)
TP
(TE)
TP
(VC)
E
B
C
MAIN
BOARD
CN321
A1
MAIN
BOARD
CN321
A2
A
B
C
D
E
F
1
2
3
4
5
6
7
8
9
10
11
7
1
14
8
22
28
15
21
• Semiconductor
Location
Ref. No.
Location
IC721
D-8
IC722
C-9
IC801
E-3
IC802
F-3
IC803
F-9
Q701
B-7
(Page 34)
(Page 35)
CX-JT7
27
27
6-6.
SCHEMATIC DIAGRAM – BD Board –
•
See page 54 for IC Block Diagrams.
•
See page 54 for Waveforms.
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
CN708
C711
C712
C721
C719
C720
C718
C717
C715
C716
C714
C706
C707
R739
R740
R741
M702
M701
R738
C747
C748
R707
C705
C709
R730
C746
C708
R729
C743
C744
R725
R726
R731
C754
C742
C753
R760
C756
C722
FB707
FB708
R720
R719
R718
R721
C830
R826
R827
R828
R825
C825
R823
R824
C829
FB808
FB701
R765
C734
C735
X701
C732
C733
C729
C811
R817
R818
C812
R819
R820
FB807
FB801
FB802
C844
C856
C810
R801
R802
C837
R803
R804
R805
C813
C814
C843
C803
C805
C815
C816
R834
R833
R832
IC803
FB803
FB805
FB806
CN710
(SUFFIX-11)
(SUFFIX-13)
C802
C807
R732
C806
C817
R717
R716
C741
R728
R745
R701
R706
R708
C710
R727
C703
C723
R711
R703
R704
R705
C702
C701
R702
FB804
C831
C704
R709
S701
R714
R715
TP
TP
TP
TP
C713
R829
R747
R746
R713
C823
C824
R744
R807
R806
IC801
C804
C859
C858
C857
C860
R860
C835
C834
C731
Q701
R722
IC721
IC722
IC802
16P
0.1
47p
0.1
0.0047
100p
1
0.0047
1 50V
0.001
0.1
0.1
100
6.3V
0
6.8k
0
6.8k
0.1
220
10V
10V
10
0.001
100
6.3V
1.2k
0.1
0.1
12k
0.047
1
680
680
2.2k
47p
0.1
47p
100
47p
0.1
100
100
100
100
22p
100
100
100
100
47p
100
100
47p
1M
15p
18p
16.9344MHz
0.01
0.01
220
10V
10V
0.1
3.3k
150
1
1k
1k
0.1
1
0.1
100
100
0.1
100
100
100
0.1
100
6.3V
0.1
0.01
100
6.3V
220
10V
10V
0.1
100
100
2.2k
MM1571J
19P
0.1
100
6.3V
0
0.1
0.1
100
100
0.1
47k
100
47k
47k
10k
0.047
100
0.1
100
6.3V
330
15k
15k
15k
100
6.3V
0.1
15k
22p
47
6.3V
27k
100
100
0.0047
100
33
33
1k
47p
47p
100k
100
100
LC78684E-E
22p
22p
22p
22p
100p
100
0.1
220
10V
10V
0.1
UP0411600SO
1k
LC78646E-E
BA5836FP
LC32V4265CT
-25
D
R
F
DRF
C
D
_
R
E
S
CD_RES
C
D
_
W
R
Q
CD_WRQ
D
O
DO
D
I
DI
C
L
CL
C
D
_
C
E
CD_CE
W
E
R
A
S
A
0
A
1
A
2
A
3
A
4
A
5
A
6
A
7
A
8
U
C
A
S
L
C
A
S
I/O
9
I/O
1
0
I/O
1
1
I/O
1
2
I/O
1
3
I/O
1
4
I/O
1
5
I/O
1
6
I/O
1
I/O
2
I/O
3
I/O
4
I/O
5
I/O
6
I/O
7
I/O
8
I/O
1
I/O
2
I/O
3
I/O
4
I/O
5
I/O
6
I/O
7
I/O
8
I/O
9
I/O
1
0
I/O
1
1
I/O
1
2
I/O
1
3
I/O
1
4
I/O
1
5
I/O
1
6
M
P
3
_
C
E
MP3_CE
FSYNC
F
S
YN
C
A0
A1
A2
A3
A4
A5
A6
A7
A8
OE
UCAS
LCAS
WE
RAS
O
E
F
G
N
D
V
C
V
C
C
E
C
B
N
C
A
D
VC
VCC
E
D
A
B
C
F
GND
LD
VR
PD
F+
T-
T+
F-
(SLED)
(SPINDLE)
G
N
D
S
L
IN
IN
4
B
IA
S
V
C
C
V
C
C
TIN
IN
3
R
ES
ET
V
O
3
(+
)
V
O
3(-)
VO
4
(-)
V
O
4
(+
)
S
P
IN
R
ES
E
T
R
EG
-B
R
EG
O
U
T
M
U
TE
G
N
D
IN
2
FO
IN
G
N
D
O
P
O
U
T
V
O
2
(-)
V
O
2(+
)
V
O
1(+
)
V
O
1(-)
IN
(-)
O
P
SLCIST
EFMIN
RF
RFVDD
RFVSS
FIN1
FIN2
TIN1
TIN2
VREF
REF1
FE
TEC
TE
RFMON
JITTC
ADAVDD
ADAVSS
TDO
FD
O
S
P
D
O
S
L
D
O
G
P
D
A
C
C
O
N
T
4
M
P
3
R
E
S
D
EFE
C
T
FS
E
Q
M
O
N
I1
M
O
N
I2
M
O
N
I3
M
O
N
I4
M
O
N
I5
V
S
S
V
D
D
D
O
U
T
TEST
V
/*
P
S
B
C
K
/F
G
LD
S
FR
V
V
D
D
P
C
K
IS
T
V
V
S
S
P
D
O
2
P
D
O
1
C
O
N
T2
V
S
S
V
D
D
5
D
R
F
D
O
D
I
CL
CE
L
IM
IT
S
W
C
D
_
M
U
TE
DATA
DATACK
LRSY
ASDFIN
ASDACK
ASLRCK
16MOUT
EFLG
C2F
XVSS
XIN
XOUT
XVDD
RVDD
RCHO
RVSS
LCHO
LVDD
FSX/16MIN
DRF
FSYNC
CL
DO
DI
3.3V
3.3V
AMUTE
CD_CE
CD_WRQ
CD_RES
D.OUT
MP3_CE
VIN
GND
CONT
VO
NOISE
V
S
S
I/O
1
6
I/O
15
I/O
14
I/O
13
V
S
S
I/O
9
I/O
10
I/O
1
1
I/O
12
N
C
LC
A
S
U
C
A
S
O
E
A
8
A
7
A
6
A
5
A
4
V
S
S
VC
C
I/O
1
I/O
2
I/O
3
I/O
4
V
C
C
I/O
5
I/O
6
I/O
7
I/O
8
N
C
N
C
W
E
R
AS
N
C
A
0
A
1
A
2
A
3
VC
C
MADRS0
MADRS1
MADRS2
MADRS3
MADRS4
MADRS5
MADRS6
MADRS7
MADRS9
MADRS8
DVDD4
VSS
MADRS10
MADRS11
MADRS12
OEB
CASUB
CASLB
WEB
RASB
DATACK
D
A
T
A
IN
R
E
S
B
IN
TB
C
E
C
L
C
M
D
IN
C
M
D
O
U
T
O
VF
CN
T
O
K
W
O
K
V
S
S
D
V
D
D
6
C
RC
F
FS
YN
C
S
T
D
AT
S
TCK
S
TR
E
Q
V
S
S DVDD5
DVDD2
V
S
S
M
D
A
T
A
0
M
D
A
T
A
1
M
D
A
T
A
2
M
D
A
T
A
3
M
D
A
T
A4
M
D
A
TA
5
M
D
A
T
A6
M
D
A
T
A7
D
VD
D
3
V
SS
M
D
A
T
A
8
M
D
A
T
A9
M
D
A
T
A1
0
M
D
A
T
A1
1
M
D
A
TA
1
2
M
D
A
TA
1
3
M
D
A
T
A1
4
MDATA15
LRSY
ADDATA
ADLRCK
C2FIN
TEST1
CKIN
VSS
CKOUT
TEST2
DVDD1
PW
SBSY
SFSY
SBCK
AVDD
VPRFR
VCOC
VPDO
AVSS
+1.8V REGULATOR
ADBCK
LVSS
*
W
R
Q
*
R
E
S
L
D
D
SLCO
S
B
C
K
/C
O
N
T
6
RF AMP,
SLED/SPINDLE
MOTOR DRIVE,
FOCUS/TRACKING
COIL DRIVE
AUTOMATIC
POWER
CONTROL
(LIMIT IN)
(LD)
(PD)
(VC)
(FE)
(TE)
(RF)
MP3 DECODER
MEMORY
A-GND
D-GND
P+7.0V
P-GND
DIGITAL SIGNAL PROCESSOR,
DIGITAL SERVO PROCESSOR,
DIGITAL FILTER,D/A CONVERTER
FOCUS/TRACKING ERROR AMP,
R-CH
L-CH
A1
A2
(Page 32)
(Page 38)
CX-JT7
28
28
6-7.
PRINTED WIRING BOARDS – CHANGER Section –
•
See page 25 for Circuit Boards Location.
:Uses unleaded solder.
C715
C731
C735
C736
R711
R731
R721
R722
R723
R735
R732
R733
R734
Q731
C751
IC712
IC701
CN704
C737
R713
R712
C741
JW702
JW703
JW704
JW705
JW706
JW707
JW708
JW711
CN703
CN702
CN705
R751
C752
CN701
JW712
JW701
JW709
JW710
JW713
JW714
R701
D701
D711
R702
CN751
IC731
CN731
CN741
CN742
CN721
DRIVER BOARD
1-687-135-
11
(11)
MAIN BOARD
CN309
B2
MAIN BOARD
CN309
(SUFFIX-11)
(SUFFIX-13)
B1
1
9
1
9
1
4
2
S711
ROTARY ENCODER
DISC TRAY
ADDRESS DETECT
2
1
SW BOARD
1-687-669-
11
(11)
SENSOR BOARD
1-687-132-
11
(11)
1-687-134-
11
(11)
MOTOR (TB) BOARD
MOTOR (LD) BOARD
1-687-133-
11
(11)
M751
(LOADING)
M
2
1
M
M741
(TABLE)
1
3
1
2
S751
OPEN/CLOSE
DETECT
CLOSE
OPEN
A
K
E
C
E
(Page 34)
(Page 35)
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