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Block Diagram - Main Section - Sony CDX-444RF Service Manual

Compact disc charger system.
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CDX-444RF
Q Q
3 7 6 3 1 5 1 5 0
T E
L
1 3 9 4 2 2 9 6 5 1 3
w w w
6-2.
BLOCK DIAGRAM – MAIN Section –
L, R
L
A
(Page 21)
R
ON : When magazine
is set
ELEVATOR
MOTOR DRIVE
IC301
OUT1
M104
9
MOTOR
M
OUT2
(ELEVATOR)
DRIVE
7
KEY ACTIVE
SWITCH
KEY +5V
Q231
SWITCHING
CN302
Q232
DISPLAY
6
KEYA/D
7
LCDDATA
4
LCDCLK
5
LCDCE
8
LCDINH
3
POWER ON
+10V
x
a o
y
05
.
i
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MPX
IC701
MPX
L IN
GAMMA
18
BUFFER
13
AMP
MPX
R IN
GAMMA
1
OSC
AMP
17
15
6
8
RV701
TRANSMITTER
L/R BALANCE
X701
38kHz
SYSTEM CONTROLLER
IC201 (2/2)
SW201
MAGAZINE
PLLDATA
PLLDATA
98
DETECT
PLLCLK
PLLCLK
97
76 MGLK
PLLCE
PLLCE
96
ACCIN
62
ELEVATOR HEIGHT
IN1
MCK
60
74 ELVF
3
(ADDRESS)
IN2
4
73 ELVR
Q
Q
3
7
6
ELEVATOR HEIGHT
EHS
59
40 XTAL
X201
12MHz
41 EXTAL
AVREF
51
ELVON
9
80 KEYACK
BATTERY
BUCHK 75
CHECK
95 ADON
Q301, 302
58 KEYIN
LCDON 36
44 LCDDATA
45 LCDCLK
RESET
38
37 LCDCE
SW302
43 LCDINH
(RESET)
SW301
Z
EJECT 63
u 1 6 3
CDON 8
.
22
22
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2
4
8
9
9
RV702
DEVIATION
BUFFER
Q701
RF AMP
Q702, 703
PLL
IC781
PD2
BUFFER, AMP
15
PLL
Q781, 782
5 4 3
1
D311
ACCESSORY
CHECK
Q308
RV201
3
1
5
1
5
0
8
9
2
RV202
SENSOR
REFERENCE VOLTAGE
SWITCH
B. UP +5V
DRIVER +8V
Q201
D306
D307
BATT B+
HIGH VOLTAGE
DETECT
Q301
+5V
D302
MPX +5V
REGULATOR
IC304
LCD +10V
REGULATOR
CONTROL
Q309, 310
RESET SIGNAL
GENERATOR
IC303
B. UP +5V
KEY +5V
D308
m
DAC/SERVO +5V
B. UP +5V
c o
2
8
9
9
CN703
OUTPUT
FMIN
11
2
X781
7.2MHz
CN303
POWER
3
ACC
4
9
8
2
9
9
BATT B+
+8V
2
REGULATOR
B. UP
IC304
+10V
REGULATOR
Q311
+5V
REGURATOR
Q303
• SIGNAL PATH
: CD PLAY
+5V
REGURATOR
IC305

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