Sony HCD-VX777 Service Manual page 23

– MAIN SECTION –
TUNER
L-CH
SECTION A
(Page 21)
VIDEO
D LOUT
SECTION
(Page 22)
J101
L-CH
L
MD/VIDEO
(AUDIO)
R R-CH
PB EQ
DECK-A
AMP
RV302
IC303
PB
HEAD
PB EQ
R-CH
AMP
RV303
IC304
REC/PB SWITCH
DECK-B
IC302
1
REC/PB 2 SWITCH
4
HEAD Q304,305
R-CH 3
R CH
C332,L301
BIAS
TRAP
RV304
REC
R-CH
BIAS
T301 TA+12V
BIAS
OSC
ERASE
Q302,303
Q301
HEAD
Q141
DC
+6V A+12V
TC BLOCK BIAS
A120/70
B120/70
A HALF
B HALF
A PLAY
B PLAY
A SHUT
B SHUT
90 89 57 56 91 70
Q393,394
A TRIG
A TRG M+
51 A TRIG
DRIVE
Q391,392
B TRIG
B TRG M+ 52
B TRIG
DRIVE
Q395
CAP MOTOR
CAP M H/L 54 CAP M H/L
SPEED CONT
Q396,397
CAP MOTOR
CAP M+ 55 CAP M CONT
DRIVE
CN304
DECK PROC.
IC301
REC
43
48 REC
DOLBY
B
70
A PB
DOL PB
40
PAS
B
120
46
REC
36 39
38
EQ
RV301
REC(L)
LEVEL
NORM
33
BIAS
CROM
SW
32
17 19 16 18 15 20 22 23 24 25 26
69 67 66 68 65 61 60 59 58 53 80 81
MASTER CONTROL
IC501(2/2)
INPUT SELECT
TONE/VOL CONT
IC101
IC102 IC501
5
40 IN2A VOL OUT2 24
7
18 10
6 POWER
AMP
Q504,505
MUTE MUTE
38 IN2C
CONT Q103
12
Q101,102
DBFB
D551
REF 1
CONT
37 IN2D
Q503,504
Q503 MUTE MUTE +B
CONT Q581
DBFB
SWITCH
35 INVOL OUT2
39 IN2B
21 DATA
22 CLOCK
R-CH
J721
MIC 1
J722
MIC 2
D822
X501 X502
32.768kHz 16MHz
10 11 15 13 79 82 83 87 88 30 29 100
POWER KEY 74
CD POWER 38
84 12
CD D+5V
CD A+5V
TCA+12V
MCA+12V
STA+12V
TCMM+9V
CDM M+7V
LED+7V
Q575
23 23
Q861 Q821,822
RY801
Q824,825
MUTE MUTE PROTECT
RELAY
CONT Q862 DETECTOR
DRIVE
Q501, 551 Q823 Q828,829
D502
OVER LOAD PROTECT PROTECT
DETECTOR CONT SWITCH
Q505,506
OVER HEAT
DETECTOR
IC602
12
CDM M+7V 10
SPEANA
BPF
18
6
11
5
RV722 4
MIC 3
VOL
IC722 IC722
S768-781
FUCTION
KEY
S753-767
IC721
RV721 FUCTION
KEY
ECHO
2 LEVEL 6
S601-606
ECHO
FUCTION
LEVEL
KEY
S751
VOLUME
F976 T910
D543
VH
F977
-VH
VL
-VL
F974
D541
IC911
3 1
REG
F975
IC951
A+5V 3 1
REG
D901-904
IC921
A+12V
3 REG 1
D906-909
VP
IC961
3 REG 1
D920-922
VF(1)
FAN
Q891,892
VF(2)
FAN
DRIVER
Q971
D972-975
IC971
RELAY
DRIVER +5.6V
3 1
REG
IC502
RESET
HCD-VX777
J102
SURROUND
SPEAKER
R CH
TM801
L
SPEAKER
R CH R
R CH
J631
PHONES
FL601
FLOURESCENT
INDICATOR TUBE
DISPLAY CONTROL
IC601
F1 F2
P1 6
78 HEADPHONE
P47 47
1 Q606-614
G1 5
LED
•
DRIVER
67
BPF 0 93
G13
72 BPF 5 100
Q630-635
ALL BAND
73
PLAY1-3 10
LED
D630-632
DRIVER
EXIST1-3 5
D751,752
Q751,752
REC/PAUSE LED 52
64
KEY0 LED
DRIVER
ENTER LED 53
D604-609
TAPE/A/B LED 54
65 KEY1
D612-618
Q601-605
TUNER A/B LED 55
MD/VIDEO LED 56 LED
DRIVER
CD/VCD LED 57
66 KEY2
GAME IN LED 58
80 VOL 1A
D791-793
79 VOL 1B Q791-793
DISC 1 LED 59
LED
DISC 2 LED 74 DRIVER
DISC 3 LED 75
60 IIC DATA
61 IICCLOCK
XIN 83
X601
77 RESET
4.0MHz
XOUT 82
Q694
D794
LED
POWER
DRIVER
F971
120
JW971
S901 (1/2)
220
JW974
230-240
JW973
JW993
RY971
CN974
2
AC
IN
1
JW954
120
SUB
TRANSFORMER
220
T972
S901 (2/2)
230-240