Sony CX-JTV8 / JAX-TV8 Service Manual ▷ View online
CX-JTV8
25
25
LED DRIVER,
TAPE MECHANISM CONTROLLER
IC201
O-LC72121/M61529/BU2099 DO
O-LC72121/BU2099/BU9262AFS CLK
O-LC72121 CE
I-TUNER TUNE
I-TUNER STEREO
I-LC72121 DI
H
TAPE-L, REC-L
(Page 26)
L
DI, SI, SO, CLK, MCLK, LCK, SLT
(Page 26)
K
TUNER-L
(Page 26)
D
LM-F, LM-R, TM-F, TM-R
(Page 23)
TUNER UNIT
AM LOOP
FM ANT
AM ANT
L-CH
R-CH
R-CH
TU-MUTE
DO
CLK
DI
CLK
S-OUT
LCK
DI
BIAS OSC
L201
REC BIAS
SWITCH
Q228
+9V
BIAS OSC
Q223
ERASE
HRPE1
(REC/PB/ERASE)
(DECK-B)
HP1
(PB)
(DECK-A)
L-CH
R-CH
R-CH
R-CH
L-CH
R-CH
R-CH
B+ SWITCH
Q921
FL901
FLUORESCENT
INDICATOR TUBE
MUTING
Q219, 221
LED901
+3.3V
(SUB)
(SUB)
B+
D603 – 610
S9/I-B-PHOTO
S10/I-B-HALF
S8/I-REC (FWD)
S12/I-REC (REW)
S5 – S12
S1 – S4,
S13 – S22
G12 – G1
48
52
49
53
50
55
S6/I-A-PHOTO
95
O-KEYSCAN
S7/I-A-HALF
S9/U8
S10/U9
S8/U7
S12/U11
S6/U5
S7/U6
S11/I-B-MODE
47
54
S5/I-A-MODE
S11/U10
S5/U4
93
O-POWER LED
8
O-BU2099 LCK
42 – 45, 56 – 65
30 – 41
SO
MCLK
SLT
SI
LCK
X901
32.768kHz
13
12
XT2
XT1
7
O-M61529 CLK
16
15
X902
8MHz
CF2
CF1
POWER 1 STANDBY/ON
SYSTEM CONTROLLER
IC901 (3/4)
FM 75
Ω
(COAXIAL)
3 DATA
4 CLOCK
5 LCK
18 SO
LED204
9 TAPE
TAPE A/B
LED205
15
HEAVY
HEAVY
LED206
16
VOCAL
VOCAL
LED207
17
SALSA
TECHNO
LED208
73
O-TECHNO
SALSA
LED209
72
O-HIP-HOP
HIP HOP
LED210
71
O-MANUAL
MANUAL
LED203
8 AUX
MD (VIDEO)
LED202
7 TUNER
TUNER BAND
LED201
6 CD
CD
ANTENNA
34
32
BIN (L)
AIN (L)
28
27
EQOUT (L)
26
PB-OUT (L)
TAI (L) MUTE
DECK A/B SELECT SWITCH, REC/PB EQ AMP
IC201
REC-
OUT (L)
OUT (L)
REC-IN (L)
21
EQ
24
DI
CLK
CE
TUNED
ST
MULTI CONTROLLER
IC309
7 BIAS
15
14
6 REC
11 TUNER MUTE
MUTE-ON/OFF
REC MUTE-ON/OFF
9
10 REC MUTE
PB MUTE
8
A/B
13
A/B
REC ON/OFF
SWITCH
Q222, 225
3
DATA
4
CLOCK
5
LCK
18
SO
CLK
S-OUT
13
LM-L (CD)
LM-F
12
LM-R (CD)
LM-R
TAPE-L
REC-L
15
TM-L (CD)
TM-F
14
TM-R (CD)
TM-R
• SIGNAL PATH
: TUNER (FM/AM)
: TAPE PLAY (DECK-A)
: TAPE PLAY (DECK-B)
: REC
• R-ch is omitted due to same as L-ch.
J
SP-F, SURR
(Page 26)
16
FRONT SPON/OFF
SP-F
17
REAR SPON/OFF
SURR
KEY ACTIVE
SWITCH
Q504, 505
28 I-RMC
REMOTE CONTROL
RECEIVER
IC802
S301 – 309,
S311 – 331
(FRONT PANEL KEY)
83 I-VOL B
84 I-VOL A
ROTARY
ENCODER
S801
VOLUME
79 I-BASS B
80 I-BASS A
ROTARY
ENCODER
S802
TREBLE/
MIDDLE
81 I-JOG B
82 I-JOG A
ROTARY
ENCODER
S803
BASS
77 I-TRE B
I-KEY1 –
I-KEY3
78 I-TRE A
ROTARY
ENCODER
S804
MULTI JOG
26 – 24
+4V
+3.3V (SUB)
91
92
O-BU9262AFS SI
O-BU9262AFS SLT
3
2
9
88
97
87
LED DRIVE
Q216
LED DRIVE
Q215
LED DRIVE
Q214
LED213
10 I-BASS
i-BASS
11
CAPSTAN/REEL
MOTOR DRIVE
Q601
12
PLUNGER DRIVE
(DECK-A)
Q602
M
M
TAPE MECHANISM
DECK BLOCK
(CAPSTAN/REEL)
(DECK-A)
(DECK-B)
MOTOR
A-SOL
13
PLUNGER DRIVE
(DECK-B)
Q603
B-SOL
B-SOL
A-SOL
CAPM+
A-PHOTO
B-PHOTO
A-HALF
B-HALF
A-MODE
B-MODE
REC (FWD)
REC (REW)
U8
U9
U7
U11
U5
U6
U10
U4
6-3.
BLOCK DIAGRAM – TUNER/TAPE/PANEL Section –
CX-JTV8
26
26
SYSTEM CONTROLLER
IC901 (4/4)
J221
R-CH
PHONES
FRONT
SPEAKER
+
–
–
–
+
+
R
L
JK503 (1/2)
R-CH
–VL
–VP
+VP
–VH
OUTPUT LEVEL
DETECT
Q23, 24
Q23, 24
BIAS
Q507, 509
FEED BACK
SWITCH
Q491
FINAL DRIVE
Q501, 503
SWITCHING
Q17, 19, 22
SWITCHING
Q18
R-CH
R-CH
+
+
R-CH
CASCADE
Q511, 513, 515
PRE DRIVE
Q517, 519
MIC AMP
IC401 (1/2)
MIC AMP
IC401 (2/2)
MUTING
Q525
CURRENT
MIRROR
Q521, 523
FREQUENCY
CONTROL
Q314 – 316
BASS BOOST
ON/OFF SWITCH
Q323
R-CH
+
+VL
+VH
OUTPUT LEVEL
DETECT
Q20, 21
Q20, 21
1
14
6
9
CTRL1 –
CTRL3
INA
17 CD MUTE
6 LINE OUT MUTE
VREF
7
BBE
13
GIN
I-BASS
OUTA
29
TOUT
25
OUT2
19
SAOUT
VR401
J401
3
DATA
4
CLOCK
LCK
S-MUTE
O-POWER
HOLD
HP
CLK
SO
5
LCK
35
RECB-2
12 – 10
BASS BOOST
CONTROL
Q317 – 320
BB CTRL1 –
BB CTRL4
16 – 13
40 CD-L
MD-L
2 MIC
39 TUNER-L
38 TAPE-L
28 VOLIN2
MIC LEVEL
AGC
Q401
(AC IN)
SUB POWER
TRANSFORMER
PT902
EVER+10V
RECT
D902 – 905
+4V
REGULATOR
IC501
+3.3V (SUB)
D504
RESET SIGNAL
GENERATOR
IC502
MIC
MIC MIXING
CD-L
G
TUNER-L
K
TAPE-L, REC-L
TAPE-L
REC-L
H
DI, SI, SO, CLK,
MCLK, LCK, SLT
MCLK, LCK, SLT
L
21
DATA
22
CLOCK
D401
SP-F,
SURR
J
(Page XX)
(Page XX)
(Page XX)
(Page XX)
(Page XX)
AC VOLTAGE
S901
VOLTAGE
SELECTOR
RESET SWITCH
Q901
R-CH
SURROUND
SPEAKER
+
–
–
–
+
+
R
L
JK503 (2/2)
R-CH
FRONT SPEAKER
ON/OFF RELAY DRIVE
Q304
FAN MOTOR
ON/OFF SWITCH
Q327, 328, 372, 373
RY501
RY502
SURROUND SPEAKER
ON/OFF RELAY DRIVE
Q532
M731
(FAN)
(FAN)
M
SP-F
SURR
: TAPE PLAY
: REC
: CD PLAY
: TUNER (FM/AM)
SIGNAL PATH
: MD (VIDEO) IN
: MIC INPUT
: MD (VIDEO) OUT
R-ch is omitted due to same as L-ch.
R-CH
JK302 (1/2)
L
R
MD (VIDEO)
IN
R-CH
JK302 (2/2)
L
R
MD (VIDEO)
OUT
37
BASS BOOST
CONTROL
Q492
R-CH
BUFFER
IC304
CENTER VOLATAGE
GENERATOR
Q324
VM+10V
MCLK
DI
+
R-CH
OVER LOAD
DETECT
Q505
DC DETECT
Q5, 6
HOLD
Q7 – 9
+
+
TH501,
502
+
R-CH
+
MUTING CONTROL
SWITCH
Q527
POWER OFF
MUTING DRIVER
Q529, 530
D513
VM+10V
HOLD
Q12
OVER CURRENT
DETECT
Q13
+4V
BASS BOOST ENHANCER
IC303
INPUT SELECT SWITCH, TONE CONTROL,
ELECTRICAL VOLUME, BASS BOOST AMP
IC301
BASS BOOST CONTROLLER
IC310
RELAY B+
+9V
+3.3V (MAIN)
–30V
REGULATOR
Q533 – 536
MAIN POWER
TRANSFORMER
PT901
RECT
D2
+VL
TO
POWER AMP
BLOCK
–VL
VL
VL
VF1
TO
FLUORESCENT
INDICATOR TUBE
VF2
RECT
D1
+VH
–VH
–VFL
VH
VH
VM
VM
RY901
VM+9V
VM+10V
RECT
D319 – 322
RECT
D301 – 304
VCC
+10V
REGULATOR
IC313
D102
DECK+9V, M+9V
+9V
REGULATOR
IC308
M+7V
D313 – 315
+9V
REGULATOR
IC305
+4V
REGULATOR
IC306
B+ SWITCH
Q301, 302
+5V
REGULATOR
IC307
11
RESET
1
O-SYS-MUTE
74
I-HP-MUTE
94
O-POWER RELAY
19
I-LEVEL
18
I-POWER MONI
27
I-POWER DOWN
CD +5V
CD +3.3V
+3.3V
REGULATOR
IC202
CD +2.5V
+2.5V
REGULATOR
IC201
CD +4.5V
+4.5V
REGULATOR
Q201
B+ SWITCH
Q303, 313, 367
S-MUTE
HP
HOLD
73
O-SYS-POWER
THERMAL
DETECT
Q13
O-POWER
POWER ON/OFF
RELAY DRIVE
Q330, 331
SPEANA AMP
Q201, 202
R-CH
MUTING
Q311
MUTING CONTROL
SWITCH
Q312
R-CH
MUTING
Q407
MUTING CONTROL
SWITCH
Q408
REC AMP
Q405
32
MIXIN
31
MICIN
23 MICOUT
27 FBOUT
DIGITAL ECHO
IC402
5
SI
3
SCK
4
SLT
SI
CLK
SLT
LEVEL SHIFT
Q435, 436
LEVEL SHIFT
Q431, 432
LEVEL SHIFT
Q433, 434
6-4.
BLOCK DIAGRAM – AMP/POWER SUPPLY Section –
Ver 1.2
CX-JTV8
27
27
6-5.
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.
•
f
: internal component.
•
: 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.
•
f
: internal component.
•
2
: nonflammable resistor.
•
C
: panel designation.
•
A
: B+ Line.
•
B
: B– Line.
• 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 (AUDIO)
L
: CD PLAY (VIDEO)
E
: TAPE PLAY (DECK-A)
d
: TAPE PLAY (DECK-B)
G
: REC
j
: MD (VIDEO) IN
k
: MD (VIDEO) OUT
N
: MIC INPUT
• Abbreviation
EA
: Saudi Arabia model
MY
: Malaysia model
SP
: Singapore 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
• VMP42DN board is multi-layer printed board.
However, the patterns of intermediate-layer have not been
included in diagram.
included in diagram.
• 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
HEADPHONE board
PANEL board
CD BUTTON board
MOTOR (LD) board
SW board
VMP42DN board
SENSOR board
VIDEO OUT board
Ver 1.2
CX-JTV8
28
28
6-6.
PRINTED WIRING BOARD – BD Board –
•
See page 27 for Circuit Boards Location.
:Uses unleaded solder.
IC102
IC103
30
16
1
15
M
(SPINDLE)
(COMPONENT SIDE)
BD BOARD
(CONDUCTOR SIDE)
BD BOARD
E
D101
E
OPTICAL
PICK-UP
BLOCK
(A-MAX. 3)
M
(SLED)
TP68
(FE)
TP70
(TE)
TP72
(RFAC)
TP71
(RFDC)
TP73
(DVC)
A
VMP42DN
BOARD
CN101
1-684-174-
12
(12)
1-684-174-
12
(12)
(Page 34)
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