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HCD-EP50
Ver 1.1
6-4.
BLOCK DIAGRAM – DISPLAY/POWER SUPPLY Section –
CD-EN, TU-EN
I
(Page 16)
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
LIQUID CRYSTAL
DISPLAY
CN301
88
SEG28
89
SEG29
90
SEG30 (SEL6)
SEG31 (SEL7)
91
92
SEG32
97
SEG37
EXCEPT AEP,
UK, Chinese
AEP, UK,
-2
-1
Chinese
SW1
AM FREQ
STEP
9kHz
10kHz
SWITCHING
G
(Page 16)
EXCEPT AEP,
UK, Chinese
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+
RDS DECODER
(IC305) B+
D318
PWRFAIL 14
RESET
SWITCH
RESET 12
Q306
POWER
50
SWITCHING
Q301
RDSDATA 35
RDSCLK 15
+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
+5V
REGULATOR
U8
B+ SWITCH
Q303
( AEP, UK)
RESET SIGNAL
GENERATOR
IC304
BUFFER
RDATA
A
(Page 15)
Q302
RCLK
( AEP, UK)
18
18
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
D35
POWER
TRANSFORMER
(SUB)
T602
RECT
D612, 613,
D616, 618
LINE
FILTER
L601
AC IN
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