Sony DPP-MS300 Marketing, Service Manual

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– SW-40 Board –
IC1700 RTC-4543SBB-L2
IC1901 STA506A IC1902 LM339NS-E20
SWITCH
SWITCH
SWITCH
SWITCH
1
2
3
4
5
6
7
8
9
10
1
2
4
3
5
6
7
14
13
11
2
10
9
8
1 OUT
2 OUT
2 IN–
2 IN+
1 IN–
1 IN+
VCC
3 OUT
4 OUT
4 IN+
4 IN–
3 IN+
3 IN–
GND
1
2
3
4
5
6
7
8
9
18
17
16
15
12
11
10
I/O CONTROLLER
CONTROL CIRCUIT
DEVIDER
VOLTAGE
DETECT
OUT PUT
CONTROLLER
OSC
NC
NC
NC
NC
NC
14 VCC
13 NC
CLK
DATA
FOUT
NC
NC
NC
FOE
WR
FSEL
CE
GND
32.768kHz
SHIFT REGISTER
CLOCK AND CALENDER