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

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