Sony HCD-VX55 Service Manual page 26

HCD-VX55/VX55J
MAIN SECTION
TUNER L-CH
A
SECTION
(Page 25)
VIDEO LOUT
D
SECTION
(Page 27)
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
91 90 69 68 93 67
Q393,394
A TRIG
A TRG M+ 57 A TRIG
DRIVE
Q391,392
B TRIG
B TRG M+ 58 B TRIG
DRIVE
Q395
CAP MOTOR
CAP M H/L 59 CAP M H/L
SPEED CONT
Q396,397
CAP MOTOR
CAP M+ 60 CAP M CONT
DRIVE
16
• RCH is omitted
• Signal Path
: PB (DECK A)
: PB (DECK B)
: REC (DECK B)
: FM
: CD
S1
S2
S3
DECK PROC.
IC301
IC104
REC 1
43
48 REC
DOLBY
B
70
A PB
DOL
PB
40
PAS
B
120
46
REC
36 38 39
EQ
RV301
REC(L)
LEVEL
NORM
33 BIAS
CROM
SW
32
17 19 16 18 15 20 22 23 24 25 26
79 77 76 78 75 74 73 72 71 70 1 2
MASTER CONTROL
IC401(2/2)
INPUT SELECT
TONE/VOL CONT
IC101
IC102 IC501
5
40 IN2A VOL OUT2 24
7
15
6 POWER
AMP
Q504,505
MUTE MUTE
38 IN2C
CONT Q103
12
Q101,102
DBFB
REF 1
CONT
37 IN2D
Q503,504
SURR AMP
IC102 Q503 MUTE MUTE
CONT Q581
DBFB
7 LI LO 10 34 IN2
SWITCH
1 BP/SR
2
CONT2
3 CONT3
2
35 OUT2
39 IN2B
21 DATA
22 CLOCK
R-CH
D822
X401 X402
32.768kHz 16MHz
3 4 5 10 11 15 13 83 84 100 87 82 30 29 18
26 26
11
Q861 Q821,822
RY801
Q824,825
MUTE MUTE PROTECT
RELAY
CONT Q862 DETECTOR
DRIVE
Q551 Q823 Q828,829
D841 D502
OVER LOAD PROTECT PROTECT
DETECTOR CONT SWITCH
+B Q506,506
OVER HEAT
DETECTOR
Q615
+5.6V
+7V 10
REG SPEANA
6
5
4
RV722
3
MIC
VOL
J721 IC722 IC722
S617,618
MIC 1
S623-628,630-636
FUCTION
S611-616
S619-621,626,629
IC721
FUCTION
J722 RV721
ECHO
MIC 2 2 6
S637-646
LEVEL
FUCTION
VOLUME
7
3.3V REG
VIDEO +3.3V
Q531
VIDEO +5V
IC911 Q911,912
CD D+5V
POWER
+5V CD POWER
AMP
CD A+5V 3 1
REG SWITCH
CD POWER 85
D952 IC951
RDS D+5V UNSW
D953 +5V
AUDIO +5V 3
1
REG
A+12V
TC A+12V
12
IC921
MIC A+12V
+12V
ST A+12V 3 1
REG
Q501
IC961
+9V
TC M+9V 3 1
REG
IC931
CD M+7V
+7V
LED +7V 3
1
REG
TM801
L
SPEAKER
R CH R
R CH
J631
PHONS
FAN
Q891,892
FAN
DRIVE
FL601
FLOURESCENT
INDICATOR TUBE
DISPLAY CONTROL
IC601
3 HEADPHONE
F1 F2
50
.
P1
52
P35
IC602
85
Q606-614
17 20 BPF 0 G1 49
LED
BPF DRIVER
12 25 BPF 5 G17 33
11 26 ALL BAND
Q630-635
PLAY1-3 10
LED
D630-632
DRIVER
EXIST1-3 5
GROOVE LED 11
D611-615
17 KEY0 FILE LED 12 D617,618
KEY
Q621-626
BASS SHIFT LED 13
LED
FUNCTION LED 14
DRIVER
REC/PAUSE LED 15
18 KEY1
KEY
SURROUND LED 16
Q604
LED D601
POWER LED 28
DRIVER
19 KEY2 POWER
KEY
Q605
D602
LED
1 VOL A TIMER LED 27
S601 TIMER
DRIVER
SELECT
2 VOL B
SIRCS
100 SIRCS
IC603
XIN 89
X601
12.5MHz
97 I2C DATA XOUT 90
98 I2CCLOCK
96 WAKE UP
92 RESET
Q941
-V
-B
REG
F974 T971
D541
+B
F975
-B F973 JW901
S951
D901-904
JW972
AC
IN
F971
D906-909
F1
F2