Psr-640 Block Diagram - Yamaha Portatone PSR-740 Service Manual

PSR-640 BLOCK DIAGRAM

IC190
108
194
196
11
IC
IC210 12 74,73
220
IC260
43,44,101
28CA1-8813472
TR501-505 IC530
IC510 IC500
122
11
IC310
IC100
43
48 (1)
53 11 13 32
114
IC370
6 150 10
151
152
9
IC290
IC200
IC600
25
158
159
163
164
IC420
19
IC400
IC430
IC410
17
10 13 14 37
11
IC320 IC300 IC330
(2)
11 13 32 22 24 29 13 14 31 30
IC610
IC900
IC310
IC210,220
IC610
IC320
IC510
6
IC800
IC1
4 39
1 3 5 7 20 21 40
PC1
IC350
15
14
13
12
11
4
IC360
IC360
IC410
IC610
IC710
PSR-740/PSR-640
7