Read Sony CMT-EP50LIV / HCD-EP50LIV Service Manual online
HCD-EP50LIV
18
18
SYSTEM CONTROLLER,
LIQUID CRYSTAL DISPLAY DRIVER
IC301 (3/3)
POWER ON/OFF
RELAY DRIVE
Q605, 606
POWER
TRANSFORMER
(MAIN)
T601
LINE
FILTER
L601
AC IN
POWER
TRANSFORMER
(SUB)
T602
RE601
B+ AMP
POWER AMP (U11) B+
D16
D8
D18
D19
CD-EN
TU-EN
D35
RESET 12
PWRFAIL 14
D701 – 709
(LCD BACK LIGHT)
REMOTE CONTROL
RECEIVER
X302
13 REMOTE
FM ON/OFF
CD-EN, TU-EN
ROTARY
ENCODER
X303
ENCODERA
25
ENCODERB
26
SEG30 (SEL6)
90
SEG31 (SEL7)
91
SEG37
97
SEG32
92
SEG29
89
SEG28
88
28
–
32
COM0
–
COM3
KEY1
–
KEY5
51
–
54
SEG0
–
SEG27
60
–
87
SW301 – 317
X303
VOLUME
LIQUID CRYSTAL
DISPLAY
CN301
RECT
D606, 608
RECT
D612, 613,
D616, 618
RECT
D602, 604
+8V
REGULATOR
Q9, 12
8V (CD)
CD BLOCK B+
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+
REGULATOR
CONTROL SWITCH
Q15
+12V
REGULATOR
Q47
+5V
REGULATOR
U8
+12V
REGULATOR
U7
+9V
REGULATOR
U10
FM/AM PLL (U2) B+
RESET SIGNAL
GENERATOR
IC304
POWER 50
RESET
SWITCH
Q306
D303
D302
D301
D304
SW1
D307
I
(Page 16)
G
(Page 16)
D
(Page 15)
-1
-2
AM FREQ
STEP
9kHz 10kHz
SWITCHING
SWITCHING
Q301
B+ SWITCH
Q4, 10
B+ SWITCH
Q4, 10
B+ SWITCH
Q19, 20
6-4.
BLOCK DIAGRAM – DISPLAY/POWER SUPPLY Section –
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