Read Sony HCD-LX20I Service Manual online
HCD-LX20i
HCD-LX20i
16
16
6-2. BLOCK DIAGRAM - MAIN Section -
SYSTEM CONTROLLER
IC501 (2/2)
RSTX 54
+5V
REGULATOR
IC401
VBUS +5V
+4V
REGULATOR
IC451
VOLTAGE
DETECTOR
IC452
BU +3.3V
+9V
REGULATOR
IC202
AUDIO +9V
VSTBY
REGULATOR
Q191
TUNER +5V
REGULATOR
Q802
TUNER +3V
REGULATOR
Q801
D121
D192
D451
T001
POWER TRANSFORMER
MOTOR DRIVER B+
V +6.5V
(AC IN)
F001
RECT
D101 -104
AC DETECT
Q162, 164, 165
RECT
Q119 - 126,
Q128, 129
RESET
SWITCH
Q654
X593
6MHz
X1
X0
92
93
X513
32.768kHz
X1A
X0A
14
13
I-RMC
9
REMOTE CONTROL
RECEIVER
IC453
D453
O-LED-STBY
22
LCD451
LIQUID
CRYSTAL
DISPLAY
S938, SW471 - 476, 481,
SW491 - 497, 941, 942
(FRONT PANEL KEYS)
I-KEY_1, I-KEY_2,
I-KEY WAKE UP
I-KEY WAKE UP
37, 38, 41
COM0 - COM3
59 - 62
SEG0 - SEG31
63, 64, 67 - 89, 94 - 100
STANDBY
LED DRIVE
Q431
D454
O-LED
5
(LCD BACK LIGHT)
21
O-IPOD POWER
+3.3V
REGULATOR
IC421
CD A +3.3V
4
O-CD/USM 3.3V ON
+3.3V
REGULATOR
IC422
CD D +3.3V
+1.5V
REGULATOR
IC201
CD +1.5V
I-HOLD 42
B+ SWITCH
Q171
C
BO2
MAIN POWER
ON/OFF CONTROL
Q175
OVER CURRENT
DETECT
Q172 - 174
2
O-POWER
I-P-MONI 36
R-CH
AUDIO IN
J921
26
SDA
25
SCL
8
12
AU-L
VOL-L
6 CD-L
IP-L
O-FUNC SD 12
O-FUNC SC 11
O-FUNC SC 11
O-AMP-ON 3
9
SEL-L
19
OUT-L
21
SR
20
SB-L
INPUT SELECTOR,
ELECTRICAL VOLUME
IC201
: TUNER (FM/AM)
: CD PLAY
: iPod
SIGNAL PATH
R-ch is omitted due to same as L-ch.
: AUDIO IN
B
CD-L
4 TU-L
A
TUNER-L
CN951
(iPod Dock)
27
28
28
LINE AMP
IC203
POWER
AMP
IC301
R-CH
18
19
30
19
30
LINE-OUT-L
LINE-OUT-R
RXD
TXD
DGND
I-IPOD TXD
O-IPOD RXD
I-IPOD DETECT
2
48 33 47
J931
R-CH
PHONES
SPEAKER
IMPEDANCE
USE 4
Ω
+
–
–
+
R
L
J351
DC DETECT
Q161
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