Read Sony CMT-EP505 / HCD-EP505 Service Manual online
HCD-EP505
18
18
6-4.
BLOCK DIAGRAM – DISPLAY/POWER SUPPLY Section –
SYSTEM CONTROLLER,
LIQUID CRYSTAL DISPLAY DRIVER
IC301 (3/3)
POWER ON/OFF
RELAY DRIVE
Q205, 206
POWER
TRANSFORMER
(MAIN)
T201
LINE
FILTER
L201
AC IN
POWER
TRANSFORMER
(SUB)
T202
RE201
B+ AMP
POWER AMP B+
D801
D802
CD-EN
TU-EN
D804
RESET 84
PWRFAIL 86
D901 – 903
(LCD BACK LIGHT)
REMOTE CONTROL
RECEIVER
X302
85 REMOTEIN
FM ON/OFF
CD-EN, TU-EN
ROTARY
ENCODER
X303
ENCODERA
97
ENCODERB
98
SEG30
62
SEG31
63
SEG32
64
SEG29
61
SEG28
60
100, 1 – 4
COM0 – COM3
KEY1 – KEY5
23 – 26
SEG0 – SEG27
32 – 59
SW301 – 317
X303
VOLUME
LIQUID CRYSTAL
DISPLAY
CN301
RECT
D206, 208
RECT
D212, 213,
D216, 218
RECT
D202, 204
+8V
REGULATOR
Q802, 803
8V (CD)
CD BLOCK B+
9V
TAPE DECK SECTION B+
+5V
M12V
CAPSTAN/REEL MOTOR B+
VT12V
FM CIRCUIT B+
5V (CPU)
SYSTEM CONTROLLER,
EEPROM B+
REGULATOR
CONTROL SWITCH
Q804
+12V
REGULATOR
Q808
+5V
REGULATOR
Q801
+12V
REGULATOR
Q805
+9V
REGULATOR
U801
(AEP, UK, CH)
(EXCEPT AEP, UK, CH)
FM/AM PLL B+
FM/AM PLL B+
FM/AM PLL,
RDS DECODER B+
RESET SIGNAL
GENERATOR
IC304
RDSCLK 87
RDSDATA
7
POWER
RDATA
RCLK
22
RESET
SWITCH
Q306
D303
D302
D301
A
(Page
15)
I
(Page 16)
G
(Page 16)
D
(Page 15)
SWITCHING
BUFFER
Q302
SWITCHING
Q301
B+ SWITCH
Q401, 402
B+ SWITCH
Q406
B+ SWITCH
Q406, 407
+5V REGULATOR
Q405
(AEP, UK)
(AEP, UK, CH)
(AEP, UK, CH)
(EXCEPT AEP, UK, CH)
(CH)
(AEP, UK)
(AEP, UK, CH)
D304
SW501
AM FREQ
STEP
10kHz 9kHz
(EXCEPT AEP, UK, CH, HK)
(EXCEPT AEP, UK, CH, HK)
(AEP
, UK, CH)
(HK)
(AEP, UK, HK, CH)
(EXCEPT US, CND)
(EXCEPT AEP, UK, CH)
AM FREQUENCY
STEP SELECT
SWITCH
Q307
AM FREQUENCY
STEP SELECT
SWITCH
Q308
Ver 1.1
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