Main (2/2) Section - Sony HCD-VR50 Service Manual

Q Q
3 7 6 3 1 5 1 5 0
– MAIN (2/2) SECTION –
H
HP.SW
POWER
SECTION
(Page 30)
SENS
C
DISC.SENS
TBL.L
TBL.R
ENC 3
BD (CD)
SECTION
ENC 2
(Page 20)
B TRG
A TRG
T E CAPM-CNT 2
L 1 3 9 4 2 2 9 6 5 1 3
CAPM-CNT 1
CAP-M-H/L
MS OUT
LM ON/OFF
REC/PB/PASS
NR ON/OFF
RM ON/OFF
B
BIAS ON/OFF
NORM/HIGH
PB A/B
DECK
ALC ON/OFF
SECTION
B PLAY
(Page 22)
A PLAY
A-HALF
B-HALF/REC A/REC B
B SHUT
A SHUT
RELAY
ST-MUTE
STEREO
FM/AM TUNER
TUNER UNIT IS TUNED
SUPPLED AS THE
ST-CE
ASSEMBLED
ST-DOUT
BLOCK
ST-DIN
ST-CLK
P X-RST
VIDEO
SECTION
w w w
(Page 28)
• R CH : Same as L ch
09
.
MAIN CONTROL
IC501 (2/2)
1
36 H/P IN STK-POWER 1
27
PROTECT 27
IC781
OPTIC
TRANSMITTING
D.OUT
93
HP MUTE 93
18
WAKE UP 18
56 SENS
29
IIC-CLK 29
30
IIC-DATA 30
61
DISC-SENS
63 TBL-L
65 TBL-R
68 ENC 3/UP-SW
69 ENC 2/DISC-LED
72 B-TRG
73
A-TRG
74 CAPM-CNT 2
75 CAPM-CNT 1
76 CAP-M-H/L
77
AMS IN
78 TC-MUTE
79 R/PB/PAS
80 NR-ON/OFF
REC-MUTE
81
X501
82 BIAS
32.768kHz
83 EQ-H/N
XC-IN 10
84 PB-A/B
85 ALC
XC-OUT 11
86 B-PLAY-SW
X502
87 A-PLAY-SW
16MHz
88 A-HALF
X-OUT 13
89 B-HALF
90 B-SHUT
X-IN 15
91 A-SHUT
100 TC-RELAY
49 ST-MUTE
50 STEREO
51 TUNED
POWER 2
52 ST-CE
53 ST-DOUT
54 ST-DIN
CD-POWER 5
55 ST-CLK
59 XRST
x a o
y
i
– 25 –
http://www.xiaoyu163.com
8
+UNREG, 12V
93
I
HP MUTE
1
STK POWER
27
PROTECT POWER
SECTION
(Page 29)
30
DATA
J
29
CLOCK
UN–10V
18
WAKE UP
DISPLAY
SECTION
(Page 31)
2
29
I 2 C-CLK
N
30
2
I C-DATA
VIDEO
SECTION
(Page 28)
Q Q
3 7 6 3
UN+10V
u 1 6 3
.
http://www.xiaoyu163.com
2 4
9 9 8
IC931
Q931
SWITCH
+10V
PL A+10V
1 3
REG
ST +10V
2
Q932
SWITCH
FAN SWITCH
Q961, 963
IC932
+12V
TC MOTOR+12V
1 3
REG
IC933
+7V
FAN DETECTOR
M+7V (UNSW)
1 3
REG
D405-409
7V
IC951
Q931
SWITCH
–7V
2 3 A–7.5V
REG
–V BIAS
Q932
SWITCH
(LED–7V)
Q932 –7
SWITCH
DETECTOR
Q905
TC–7V
–7V
IC901
Q901
SWITCH
+7V
1 5 1 5 0 8 9 2 4
1 3 A+7.5V
REG
+V BIAS
2
Q902
SWITCH
(LED+7V)
–7
TC–7V
IC911
–7V
+5V
1 3 LED 5V
REG
LED 5V
D+5V UNSW
Q901
SWITCH
(D+5V SW)
5V
AU D+5V
2
Q902
SWITCH
Q914
SWITCH EVER +5V
5
Q913
SWITCH
(CD D+5V SW)
D+5V (SW)
A+5V (SW)
(CD A+5V SW)
IC921
+5V
1 3 CD D+5V SW
REG
m
Q921
CD A+5V SW
SWITCH
c o
– 26 –
HCD-VR50/VR70
2
9 9
FAN901
FAN
9 8 2 9 9
L
(Page 29)
POWER
SECTION