Sony CX-JV77 / JAX-V77 Service Manual ▷ View online
CX-JV77
25
25
CX-JV77
6-3. BLOCK DIAGRAM – MAIN Section –
OVER LOAD
DETECT
Q441, 442
PROTECT
DETECT
Q485, 487
AMS DETECT
Q327
THERMAL
DETECT
Q483, 484
FAN MOTOR
DRIVE
Q310
FEED BACK
SWITCH
Q106
TH441
R-CH
R-CH
R-CH
+
R-CH
R-CH
7
INPUT SELECT,
TONE CONTROL,
ELECTRICAL VOLUME
IC101
LOADING/TABLE
MOTOR DRIVE
IC371
Q1
6
Q0
58
MIC
37
TONE OUT1
15
REC OUT1
54
LINE OUT1 L
33
VOL OUT1
3
DATA
4
CLOCK
5
LCH
19
SI
12
Q6
14 Q8
17 Q11
FRONT SP RELAY
11 Q5
TU-MUTING
13 Q7
LM-R
LM-F
16 Q10
TM-F
15 Q9
1 CD L
61 TUNER L
3 TAPE L
9 TAPE A1
7 PB OUT1
11 TAPE B1
63 MD L
36 VIN1
TM-R
REC/PB
SWITCH
IC201,
Q322, 323
R-CH
CD-L
E
HP DET
G
MIC
F
LM-L, LM-R,
TM-L, TM-R
TM-L, TM-R
A
• SIGNAL PATH
: CD PLAY
: TAPE PLAY (DECK-A)
: REC
• R-ch is omitted due to same as L-ch.
: TAPE PLAY (DECK-B)
: TUNER
H
10 Q4
CD-MUTING
J
JK101 (1/2)
R
VIDEO/SAT
IN
L
R-CH
JK101 (2/2)
R
VIDEO/SAT
OUT
L
: AUX IN
: MIC
D481
D207
D206
M901
(FAN)
(FAN)
D201
J801
PHONES
FRONT SPEAKER
IMPEDANCE
USE 6 – 16
Ω
+
–
–
–
+
R
L
FM/AM TUNER PACK
AM
FM ANT
AM ANT
TUNER-L
TUNER-R
LC72121 CE
CE
R-CH
ANT GND
ANT GND
TUNED
TUNED
STEREO
STEREO
TU MUTE
TU-MUTING
LC72121 DI
DO
LC72121 DO
DI
LC72121 CLK
CLK
CE
TUNED
STEREO
DO
DI
CLK
FM 75
Ω
COAXIAL
BIAS OSC
L101
REC BIAS
SWITCH
Q324
B +9V
BIAS OSC
Q321
ERASE
HRPE1
(REC/PB/ERASE)
(DECK-B)
HP1
(PB)
(DECK-A)
L-CH
R-CH
R-CH
L-CH
R-CH
R-CH
40
AMS OUT
BAND-PASS
FILTER
Q351, 352
56
SAOUT1
18
SC
+
SURROUND SPEAKER
IMPEDANCE
USE 24
Ω
+
–
–
–
+
R
L
JK441
RY441
–1
–2
PROTECTOR
Q486, 488
POWER ON
MUTING
Q105
STANDBY
SWITCH
Q489
LEVEL
SHIFT
Q490, 491
MUTING
Q103
MUTING
CONTROL
Q101, 102
POWER AMP
ON/OFF
Q308
DC
DETECT
Q481, 482
+
+
+
POWER
AMP
IC441
LINE AMP
IC102
B+9V
B+9V
POWER ON
MUTING
Q309, 313
83
I-LC72121 DI
86
O-LC72121/BU2099FV CLK
84
O-LC72121 CE
67
I-TUNED-IN
68
I-STEREO-IN
87
O-BU2099FV LCH
85
O-LC72121/BU2099FV DO
69
I-AMS-IN
24
I-STREAM/VACS
18
I-PROTECT
91
O-BD3401 DATA
88
O-BD3401 CLK
75
O-SYSTEM-MUTE
3
SOL-B
4
SOL-A
2
MOTO
CAPSTAN/REEL
MOTOR DRIVE
Q601
PLUNGER DRIVE
(DECK-A)
Q603
M
M
(CAPSTAN/REEL)
(DECK-A)
(DECK-B)
M
M
PLUNGER DRIVE
(DECK-B)
Q602
A-HALF
Q607
Q608
Q606
A-MODE
REC (REW)
A-PHOTO
B-PHOTO
I-REEL A IN
I-REEL B IN
22
70
71
I-TAPE A STAT
B-HALF
B-MODE
REC (FWD)
23
I-TAPE B STAT
SYSTEM CONTROLLER
IC601 (2/3)
TAPE MECHANISM
DECK BLOCK
(Page 24)
(Page 24)
(Page 23)
(Page 24)
(Page 26)
(Page 24)
CX-JV77
26
26
CX-JV77
6-4. BLOCK DIAGRAM – PANEL/POWER SUPPLY Section –
–27V
REGULATOR
Q902
W001
(AC IN)
SUB POWER
TRANSFORMER
PT902
RY901
VF1, 2
VDD2
VDD1,
VDD3/4
TO
FLUORESCENT
INDICATOR TUBE
+12V
REGULATOR
Q311
–VFL
VP
MAIN POWER
TRANSFORMER
PT901
RECT
D401
D401
RECT
D301 – 304
AMP B+ 1
AMP B– 1
RECT
D402
D402
AMP B+ 2
AMP B– 2
D324 – 326
D321
D609
D610
D607, 608
D316
D908
RECT
RECT
F907
+3.3V
REGULATOR
IC301
B+3.5V
+5V
REGULATOR
IC302
VOLTAGE
DETECT
IC604
+3.3V
REGULATOR
IC603
CD +5V
+3.3V
REGULATOR
IC202
CD +3.3V
+2.5V
REGULATOR
IC201
+4.5V
REGULATOR
Q201
CD +2.5V
CD +4.5V
RECT
D309 – 312
RECT
D902 – 904
RY B+
FAN B+
+9V
REGULATOR
IC304
CD M+7V
RECT
D305 – 308
UNREG +16V
+9V
REGULATOR
IC303
B+9V,
MIC +9V
EVER +10V
M +9V
B+3.5V
B+ SWITCH
Q312
B+ SWITCH
Q604, 616
RESET SWITCH
Q605
B+ SWITCH
Q314, 315
RELAY DRIVE
Q361, 362
29
I-AC CUT
74
O-POWER RELAY
11
RESET
SYSTEM CONTROLLER
IC601 (3/3)
O-POWER LED 76
O-VIDEO-POWER 94
B+ SWITCH
Q301, 302
FRONT SP RELAY
H
FLUORESCENT
INDICATOR TUBE
FL601
S1 – 21
G1 – G13
42 – 30
43 – 45, 47 – 50,
52 – 65
LED601
I/1
O-I-BASS LED 77
I-SIRCS-IN 28
LED602
i-BASS
LED DRIVE
Q609
REMOTE CONTROL
RECEIVER
IC610
S601 – 610,
S621 – 630,
S621 – 630,
S641 – 650
(FRONT PANEL KEYS)
10 I-VOLUME-IN2
9 I-VOLUME-IN1
ROTARY
ENCODER
S660
VOLUME
82 I-MULTI-JOG IN2
I-KEY1 –
I-KEY3
I-KEY3
81 I-MULTI-JOG IN1
ROTARY
ENCODER
S661
AMS/
TUNING
27 – 25
X601
32.768kHz
13
12
O-XT2
I-XT1
16
15
X602
10MHz
CF2
CF1
VOLTAGE
SELECTOR
S901
F906
AC-VL
AC-VH
AC3
AC4
F908,
F909
F909
F904,
F905
F905
(Page 25)
CX-JV77
27
27
CX-JV77
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
Q
Note on Schematic Diagram:
•
All capacitors are in
µ
F unless otherwise noted. (p: pF)
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.
•
5
: fusible resistor.
•
C
: panel designation.
•
A
: B+ Line.
•
B
: B– Line.
•
Voltages and waveforms are dc with respect to ground
under no-signal conditions.
– BD49 Board –
no mark : CD PLAY
– VMP43GY Board –
no mark : VIDEO CD PLAY
under no-signal conditions.
– BD49 Board –
no mark : CD PLAY
– VMP43GY Board –
no mark : VIDEO CD PLAY
∗
: Impossible to measure
– Other Sections –
no mark : FM
(
no mark : FM
(
) : TAPE PLAY
〈〈
〉〉
: TAPE REC
[
] : CD PLAY
∗
: Impossible to measure
•
Voltages are taken with a VOM (Input impedance 10 MW).
Voltage variations may be noted due to normal produc-
tion tolerances.
Voltage variations may be noted due to normal produc-
tion tolerances.
•
Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
Voltage variations may be noted due to normal produc-
tion tolerances.
•
Circled numbers refer to waveforms.
•
Signal path.
F
: TUNER (FM/AM)
E
: TAPE PLAY (DECK A)
d
: TAPE PLAY (DECK B)
G
: REC
J
: CD PLAY (AUDIO)
L
: CD PLAY (VIDEO)
N
: MIC
f
: AUX IN
•
Abbreviation
EA
EA
: Saudi Arabia model
•
Circuit Boards Location
SENSOR board
PANEL board
VCD CONNECT board
VMP43GY board
VIDEO OUT board
MAIN board
POWER board
SUB TRANS board
TRANS board
HEADPHONE board
MICROPHONE JACK board
BD49 board
MOTOR (TB) board
MOTOR (LD) board
SW board
•
Indication of transistor
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.)
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.
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
•
Note for Printed Wiring Boards and Schematic Diagrams
CX-JV77
28
28
CX-JV77
6-5. PRINTED WIRING BOARD – BD49 Board –
•
See page 27 for Circuit Boards Location.
:Uses unleaded solder.
C117
C109
C114
Q101
C108
R131
C151
FB111
C119
R123
C113
R124
R122
R132
R133
C150
R234
C118
C121
C111
C112
C120
C115
M101
M102
S101
IC150
R104
C102
R101
R120
C104
Q102
R126
R156
R153
R152
R113
R109
R103
R105
R111
C101
D101
CN101
R118
C213
C103
C110
R125
R151
R155
C158
R114
C152
R102
JW102
R220
R115
CN102
C107
IC103
R119
E
(COMPONENT SIDE)
BD49 BOARD
1-861-246-
11
(11)
E
1
1
14
28
15
15
30
16
1-861-246-
11
(11)
(CONDUCTOR SIDE)
BD49 BOARD
(SPINDLE)
M
(SLED)
M
(LIMIT)
OPTICAL
PICK-UP
BLOCK
(KSM-213DHAP)
A
VMP43GY
BOARD
CN101
1
2
3
4
5
6
7
8
9
10
11
12
13
A
B
C
D
E
F
G
H
TP4 (FE)
TP5
(RFAC)
TP2 (TE)
TP (DVC)
TP6 (RFDC)
(Page 34)
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