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Block Diagram - Display/power Supply Section - Sony HCD-EP50LIV Service Manual

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HCD-EP50LIV
Q Q
3 7 6 3 1 5 1 5 0
6-4.
BLOCK DIAGRAM – DISPLAY/POWER SUPPLY Section –
CD-EN, TU-EN
(Page 16)
I
FM ON/OFF
D
(Page 15)
LIQUID CRYSTAL DISPLAY DRIVER
REMOTE CONTROL
RECEIVER
13 REMOTE
X302
ROTARY
25
ENCODERA
X303
ENCODER
VOLUME
26
ENCODERB
X303
SW301 – 317
T E
L
1 3 9 4 2 2 9 6 5 1 3
LIQUID CRYSTAL
DISPLAY
CN301
88
SEG28
89
SEG29
90
SEG30 (SEL6)
91
SEG31 (SEL7)
SEG32
92
97
SEG37
-2
-1
SW1
AM FREQ
STEP
9kHz
10kHz
SWITCHING
(Page 16)
G
w w w
D19
CD-EN
D701 – 709
(LCD BACK LIGHT)
FM/AM PLL (U2) B+
SYSTEM CONTROLLER,
TU-EN
IC301 (3/3)
9V
TAPE DECK SECTION,
LA1837 (U1) B+
M12V
CAPSTAN/REEL MOTOR B+
VT12V
FM CIRCUIT B+
5V (CPU)
SYSTEM CONTROLLER (IC301),
EEPROM (IC302),
94HC4094 (U15) B+
PWRFAIL 14
RESET
RESET 12
SWITCH
Q306
POWER 50
SWITCHING
Q301
x
a o
y
.
i
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8
+8V
8V (CD)
REGULATOR
CD BLOCK B+
Q9, 12
REGULATOR
CONTROL SWITCH
Q15
B+ SWITCH
Q4, 10
+9V
B+ SWITCH
REGULATOR
Q19, 20
U10
+12V
REGULATOR
U7
D16
+12V
B+ SWITCH
REGULATOR
Q4, 10
Q47
D18
Q
Q
3
7
6
3
+5V
REGULATOR
U8
RESET SIGNAL
GENERATOR
IC304
u 1 6 3
.
18
18
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2
4
9
9
8
POWER
TRANSFORMER
(MAIN)
T601
B+ AMP
RECT
POWER AMP (U11) B+
D602, 604
RE601
RECT
D606, 608
POWER ON/OFF
D8
RELAY DRIVE
Q605, 606
POWER
TRANSFORMER
1
5
1
5
0
8
9
2
4
(SUB)
T602
RECT
D612, 613,
D616, 618
m
c o
2
9
9
LINE
FILTER
L601
AC IN
D35
9
8
2
9
9

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