Display/Power Supply Section - Sony HCD-GSX75 Service Manual

Q Q
3 7 6 3 1 5 1 5 0
– DISPLAY/POWER Supply Section –
FUNCTION KEY
S751, 753 – 756
FUNCTION KEY
S752, 770, 772 – 777
FUNCTION KEY
S760 – 769
ROTARY
VOLUME ENCODER
RV751
ROTARY
DISC
ENCODER
SELECT
RV752
SW701
(DOOR SW)
INPUT/EVR VACS GRAPHIC
T E
X E L 1 3 9 4 2 2 9 6 5 1 3
SECTION EQUALIZER
(BPF)
(Page 25)
D758
J881
(STBY)
KEYBOARD
INPUT
4
+5V 5V
1 1
SDA
SCL
5
Q804
w w w
.
DISPLAY CONTROLLER
IC701
KEY 1
79 PB6
KEY 0
78 PB5
GRID DRIVE
Q723 - 726
KEY 2
80 PB7
VOL -A LED DRIVE
LED1/PIP1 86
68 PA4
Q701
VOL -B
69 PA5
JOG -A
LED DRIVE
66 PA2 P-V-LED-10
58
JOG -B
Q770
67 PA3
59 SO1
F1 - F4
VACS
72 PB0
82 X0
X701
SDA(I2C) 60 30 I2C DATA
4MHz
SCL(I2C) 61 29 I2C CLK
83 X1
RSTX 77 79 FL-RESET
S778
73 POWER KEY
74 DISPLAY KEY
S779
DISPLAY
LED DRIVE
78 ST/BY LED
Q759
IC305
2 3 4
36 KB-SDA
11 10 9 8
20 KB-SCL
37 KB-CTRL
REMOTE CONTROL
1 4 RMC
RECEIVER
IC702
x a o
y
15 XIN
X801
i
16MHz
13 XOUT
10 SUBXIN
X802
32.768kHz
11 SUBXOUT
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8
FL701
FLUORESCENT
INDICATOR TUBE
VKK VP-30V
VF VF1,2
D742, 743
(CD LED)
(UMBER/GREEN)
D751
(DOOR LED)
D752,753,754,757
D759,760,761
SYSTEM CONTROLLER
IC801 (5/5)
Q Q
3 7 6 3
B+ SWITCH
CD +5V
Q316, 317
CD ON 38
+5V
D701, 702
IC701
VCC
FM +7V
TU-ON 40
B+ SWITCH
+3.3V
Q311, 312
P-ST/BY 82
D807
EVER +3.3V
VREF
VCC
(+3.3V)
D806
u 1 6 3
.
Q803
INV.
RESET
RESET 12
3 (LEVEL DET.) 1
IC802
D803
AC CUT 75
27 27
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2 4
9 9 8
1 5 1 5 0 8 9 2 4
D553
RECT
+VH
+5V REG
3 1
IC931
–VH
D554
RECT
+12V REG
MOTOR +12V
+VL
Q931
–VL
Q303, 307
B+ SWITCH
– 30V
REGULATOR
VP – 30V
Q934
+9V REG
+9.6V 3 1
IC933
2
D907
TO FLUORESCENT
INDICATOR TUBE
FL701
+8V REG
CD +8V 3
1
IC932
D931-934
AC
D805
RECT
DET.
RELAY DRIVE
Q901
+4V REG m
3 1
IC803
c o
HCD-GSX75
2
9 9
9 8 2 9 9
T901
POWER
TRANSFORMER
(MAIN)
F503
F502
F501
F504
R902
D905
RECT
VF1
VF2
D552 R905
F902
D551 RY901
T902
POWER
TRANSFORMER
(SUB) LF901
AC
IN
D901-904
RECT