Sony HCD-VX77 - Page 27

HCD-VX77/VX77J
2727
– MAIN SECTION –
RESET
: FM
: CD
• Signal Path
• RCH is omitted
: PB (DECK A)
: PB (DECK B)
: REC (DECK B)
REC
BIAS
BIAS
TRAP
R-CH
R-CH
R CH
BIAS
OSC
Q302,303
RV304
Q301
TA+12V
C332,L301
ERASE
HEAD
REC/PB
HEAD
PB EQ
AMP
IC304
RV303
IC302
REC/PB SWITCH
REC
EQ
BIAS
SW
DOLBY
B
NORM
CROM
REC(L)
LEVEL
RV301
40
1
2
3
4
48
46
A
B
70
120
PB
REC
DOL
PAS
PB
REC
36
33
32
38
39
43
BIAS ON/OFF
20
B NORM/CROM/METAL
ALC ON/OFF
15
RM ON/OFF
22
NR ON/OFF
23
REC /PB/PASS
24
LM ON/OFF
25
MS OUT
26
A
TUNER
SECTION
D
VIDEO
SECTION
MD/VIDEO
(AUDIO)
R-CH
L-CH
LOUT
L-CH
J101
L
R
R-CH
PB
HEAD
DECK-B
DECK-A
PB EQ
AMP
IC303
RV302
SWITCH
Q304,305
17
A120/70
PB A/B
16
NORM/HIGH
18
DECK PROC.
IC301
INPUT SELECT
SURROUND
PROCESSOR
IC103
TONE/VOL CONT
IC101
IN2A
40
IN2C
38
IN2D
37
INVOL OUT2
35
IN2B
39
24
VOL OUT2
34
IN2
DATA
21
CLOCK
22
L-IN
7
L-OUT
10
BP/SR CONT2 CONT3
1
REF
DBFB
SWITCH
Q503
DBFB
CONT
Q101,102
5
6
7
IC102
MUTE
Q103
MUTE
CONT
Q504,505
POWER
AMP
IC501
15
12
11
R CH
J102
MUTE
Q581
MUTE
CONT
Q503,504
MUTE
Q862
MUTE
CONT
Q861
D841
OVER LOAD
DETECTOR
Q551
OVER HEAT
DETECTOR
Q506,506+B
D502
PROTECT
DETECTOR
Q821,822
PROTECT
CONT
Q823
PROTECT
SWITCH
Q828,829
RELAY
DRIVE
Q824,825
RY801
J631
PHONS
R CH
R CH
FAN
FAN
DRIVE
Q891,892
SURROUND
SPEAKER
L
R
TM801
SPEAKER
91
B SHUT
90
A SHUT
69
B PLAY
68
A PLAY
93
B HALF
67
A HALF
77
PB A/B
A TRIG
DRIVE
CAP MOTOR
DRIVE
Q396,397
Q393,394
B TRIG
DRIVE
Q391,392
CAP MOTOR
SPEED CONT
Q395
A TRIG
57
B TRIG
58
CAP M H/L
59
CAP M CONT
60
TC BLOCK
A120/70
B120/70
A HALF
B HALF
A PLAY
B PLAY
A SHUT
B SHUT
A TRG M+
B TRG M+
CAP M H/L
CAP M+
19
79
TC RELAY
IC401(2/2)
MASTER CONTROL
76
EQ H/N
78
ALC
75
BIAS
74
REC MUTE
73
NR ON/OFF
72
R/PB PAS
71
TC MUTE
70
AMS IN
4
DATA
5
1 2 3
1 2 3
CLK
SURROUND1 SURROUND2 SURROUND3
83
DBFB ON/OFF
DC
BIAS
Q141
+6V
A+12V
84
LINE MUTE
100
STK MUTE
87
RELAY H
82
PROTECT
30
IIC DATA
10
XC IN
11
XC OUT
15
X IN
13
X OUT
32.768kHz
X401
16MHz
X402
BPF 0
BPF 5
P1
P35
G1
G17
FLOURESCENT
INDICATOR TUBE
DISPLAY CONTROL
IC601
F1 F2
LED
DRIVER
Q606-614
D611-615
D617,618
11
FUCTION
KEY
SIRCS
IC603
97
I2C DATA
98
I2CCLOCK
VOL A
1
VOL B
2
SIRCS
100
S601
VOLUME
X601
12.5MHz
+5.6V
REG
Q615
FL601
IC602
50
52
85
.
49
33
20
25
ALL BAND
26
HEADPHONE
3
S617,618
S623-628,630-636
10
10
5
PLAY1-3
EXIST1-3
LED
DRIVER
Q630-635
D630-632
11
GROOVE LED
12
FILE LED
13
BASS SHIFT LED
14
FUNCTION LED
15REC/PAUSE LED
16SURROUND LED
LED
DRIVER
Q621-626
LED
DRIVER
Q604
28POWER LED
POWER
D601
LED
DRIVER
27
TIMER LED
TIMER
SELECT
D602
Q605
17
12
SPEANA
BPF
6
5
4
3
+7V
KEY0
17
FUCTION
KEY
S611-616
S619-622,626,629
KEY1
18
FUCTION
KEY
S637-648
KEY2
19
96
WAKE UP
92
RESET
89
XIN
90
XOUT
MIC 1
J721
MIC
VOL
RV722
IC722 IC722
MIC 2
J722
ECHO
LEVEL
2
6
ECHO
LEVEL
IC721
RV721
29
IIC CLK
18
WAKE UP
7
AC CUT
T971
AC
IN
JW901
S951
TH
MODEL
EXCEPT TH
F974
F975
-V
REG
+5V
REG
Q941
D541
-B
+B
-B
POWER
AMP
D901-904
F1
F2
1
3
+12V
REG
1
3
+9V
REG
1
3
+7V
REG
1
3
CD POWER
SWITCH
+5V
REG
1
3
IC911 Q911,912
IC951
IC921
IC961
IC931
CD D+5V
CD A+5V
RDS D+5V UNSW
AUDIO +5V
A+12V
TC A+12V
MIC A+12V
ST A+12V
TC M+9V
CD M+7V
LED +7V
D906-909
D952
D953
D511
85
CD POWER
RESET
12
Q501
IC501
09
T301
D822
(Page 25)
(Page 26)
F971
RCH
IC104