Read Sony CDX-727 Service Manual online
CDX-727
7-3.
BLOCK DIAGRAM – BUS CONTROL/POWER SUPPLY Section –
2
13
8
7
69
31
32
30
I
B.UP
DATA
CLK
BUSON
RST
SCK
SO
SI
68
61
BU.CHK
CD.ON
MAG.SW
MGLK
BUS.ON
W.UP
EJECT
EXTAL
XTAL
7
5
4
6
2
REGULATOR
Q303
+5V
REGULATOR
Q307
MICON +5V
MICON +5V
D313
RESET SIGNAL
GENERATOR
IC304
X201
8MHz
SERVO +5V,
DAC +5V
MICON +5V
MICON +5V
RST
05
SYSTEM CONTROLLER
IC201 (3/3)
(Page 22)
J
BU CHECK
(Page 22)
LEVEL SHIFT
D307
BATTERY
CHECK
Q301, 302
D308
D306
+9V
REGULATOR
Q309
REGULATOR
CONTROL SWITCH
Q308
REGULATOR
CONTROL SWITCH
Q306
REFERENCE VOLTAGE
SWITCH
Q201
LINEAR POSITION
SENSOR
D309
SERVO +9V
D311
12
1
4
11
9
6
10
M
1
7
4
5
70
58
ELV.R
ELV.F
ELEVATOR
MOTOR DRIVE
EEPROM
IC202
ELEVATOR MOTOR DRIVE
IC301
FIN
RIN
5
6
12
11
EE.DATA
EE.CLK
SDA
SCL
OUT1
OUT2
M104
(ELEVATOR)
ELV.ON
MCK
RV201
ELEVATOR HEIGHT
SENSOR
RV202
38
EHS 39
AVREF 37
RESET
SWITCH
RST
BUSON IN
CLK
DATA
LOF
SCK
SO
SI
BUSON OUT
BUSON OUT
RESET
55
48
50
49
62
64
SW301
6
57
SW201
MAGAZINE EJECT
END DETECT
SW202
MAGAZINE IN/OUT
DETECT
BUS INTERFACE
(FOR SONY BUS)
IC302
60
CN901 (2/2)
(FOR SONY BUS)
CONTROL
RESET
– 23 –
– 24 –
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