Sony HCD-EH25 - BLOCK DIAGRAM - MAIN;POWER SUPPLY Section

HCD-EH25/EH26
HCD-EH25/EH26
1414
7-3. BLOCK DIAGRAM - MAIN/POWER SUPPLY Section -
R-CH
INPUT SELECTOR,
ELECTRICAL VOLUME
IC401
28
REC1O
18
OUT1
13
SD
23
C1
21
B1
2
PB1P
19
A1
R-CH
CD-L
A
TUNER-L
• SIGNAL PATH
: CD PLAY
: TAPE PLAY
: REC
• R-ch is omitted due to same as L-ch.
J105
AUDIO IN
J102
PHONES
SPEAKER
+
–
–
+
R
L
J101
BIAS OSC
L501
OSC
Q507
TPR501
(REC/PB)
TAPE
MECHANISM
DECK
L-CH
SW501-1
SW501
(REC/PB)
PB
S
REC
R-CH
R-CH
POWER
AMP
IC301
33
FUNC_SDA
RMC
9
SYSTEM CONTROLLER
IC701 (3/3)
+
(AC IN)
F001
POWER
TRANSFORMER
PT005
SYS +3.3V
D702
D116 – 118
D372
AMP B+
RECT
D107 – 110
B+ SWITCH
Q351, 352
AC DETECT
Q371, 372
AC DETECT
Q121, 122
VOLTAGE
DETECT
Q705, 706
RECT
D111, 113
VSTBY
+9V
REGULATOR
Q101 – 103
VM +9V
USB
DVDD +3.3V
VM +7V
TUNER +5V
TUNER +3V
46POWER_ON
42HOLD
36P_MONI
54REST
REMOTE CONTROL
RECEIVER
IC703
LED DRIVE
Q707
LED701
(LCD BACK LIGHT)
LED_STBY
22
LED
1
LED702
X701
32768Hz
14 13
X3 X2
92 93
X702
5.53MHz
X1
X0
LCD702
LIQUID
CRYSTAL
DISPLAY
48 RE_VOL
2 CD OPEN/CLOSE
ROTARY
ENCODER
SW700
VOLUME
STANDBY
SW701 – 711
(FRONT PANEL KEYS)
SW750
(CD LID OPEN/CLOSE DETECT)
KEY1 – KEY3
37, 38, 41
COM0 – COM3
59 – 62
SEG0 – SEG31
63, 64, 67 – 89, 94 – 100
RESET
SWITCH
Q704
B
SW501-2
40
TP_STATE
DC
DETECT
Q123
LED DRIVE
Q711, 712
LINE FILTER
LF901
REGULATOR
Q701 – 703
REGULATOR
Q802
REGULATOR
Q801
+3.3V
REGULATOR
IC707
+3.5V
REGULATOR
IC706
D703
+1.5V
REGULATOR
IC201
+1.5V
REGULATOR
IC102
VOLTAGE
DETECTOR
IC709
Q710
D704, 705
B+ SWITCH
Q713, 714
USB AVDD +3.3V
USB +1.5V
AVDD +3.3V
DVDD +3.3V
VDD +1.5V
24USB_REG_ON
23CD_ON
RECT
D901, 902
+5V
REGULATOR
IC901
VBUS POWER
ON/OFF SWITCH
IC103
VBUS B+
AUDIO SELECT
SWITCH
IC451
USB-L
C
: USB
: AUDIO IN
: FM
30
AUDIO_SW
34
AMP_ON
21
USB_EN
20
USB_FLG
+
+3.3V
REGULATOR
Q708
+3.3V
REGULATOR
Q709
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(Page 13)
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