Block Diagram - Bus Control/Power Supply Section - Sony CDX-838 Service Manual

CDX-838
Q Q
3 7 6 3 1 5 1 5 0
7-3. BLOCK DIAGRAM – BUS CONTROL /POWER SUPPLY Section –
MAGAZINE IN/OUT
OUT1
1
M104 M
OUT2
7
(ELEVATOR)
T E
L 1 3 9 4 2 2 9 6 5 1 3
w w w
SYSTEM CONTROLLER
IC201 (3/3)
AVREF 37
SW201
MAGAZINE
57 MGLK
DETECT
ELV.ON
SW202
60 MAG.SW
DETECT
CD.ON
BU.CHK
ELEVATOR MOTOR DRIVE
IC301
FIN
4 70 ELV.R
ELEVATOR
RIN
MOTOR DRIVE 5 58 ELV.F
BUS.ON
EEPROM
IC202
12 EE.DATA
SDA 5
SCL 6 11 EE.CLK
EJECT
05
32 31
X201
8MHz
x a o
. i
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RV201
MCK 38
ELEVATOR HEIGHT
(ADDRESS) ADJUSTMENT
RV202
EHS 39
ELEVATOR HEIGHT
SENSOR
REFERENCE VOLTAGE
MICON +5V
SWITCH
Q201
69
68
61
BUS INTERFACE
(FOR SONY BUS)
IC302
SO
SI 49 10
SI
Q Q
SO 50 9
3 7
SCK
SCK 48 11
BUSON OUT
55 1
BUSON OUT
13
RESET
RESET
RST 30 8
SWITCH
RESET SIGNAL
GENERATOR
IC304
D306
W.UP
62
64 MICON +5V
SW301
Z
u 1 6 3
y
18 18
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2 4
8 9 9
SERVO +9V
D311
MICON +5V
+8V +8V
LOW-PASS FILTER REGULATOR
(IC602) B+ IC306
+5V
DAC +5V REGULATOR
IC307
+5V
SERVO +5V REGULATOR
IC305
DATA
6
Q304
6 3 1 5 1 5 0 8 9
BATTERY
CHECK
CLK
Q301, 302
4
LOF
12
BUSON IN
2
RST
7
MICON +5V
m
c o
.
2
8 9 9
D309
+9V
REGULATOR
IC303
REGULATOR
Q303
D313
7
B+ SWITCH
B.UP
Q305
2 4 9 8 D308 2 9 9
LEVEL SHIFT
D307
5
DATA
4
CLK
6
BUSON
2
RST
CN901 (2/2)
CONTROL
(FOR SONY BUS)
BU CHECK
J (Page 17)
RESET
I (Page 17)