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PSR-740 CIRCUIT DIAGRAM (DM2/2, MIC-JACK, MIC)
PSR-740
PSR-740
PSR-740
DM
to DM-CN3
to AM-CN320
MIC
MIC-JACK
SWP30B
VOP3
INVERTER
INVERTER
WAVE ROM LL 32M
WAVE ROM HL 32M
WAVE ROM LH 16M
WAVE ROM HH 16M
REG3.3V
DRAM 4M
DRAM 4M
ADC
DAC
OP AMP
OP AMP
2/2
LED DRIVER
0P AMP
0P AMP
MIC /LINE IN
28CC1-8814267
28CC1-8814268
28CC1-8814266
(
)
(
)
not installed
installed
(RE)
(GR)
Note : See parts list for details of circuit board
component parts
: Ceramic Capacitor
: Semi-Conductive Ceramic Capacitor
560P
4.7K
5600p
100
18K
2.2K
Summary of Contents for PortaTone PSR-640
Page 4: ...4 PSR 740 PSR 640 ...
Page 22: ...22 PSR 740 PSR 640 DM Circuit Board PSR 640 Component side Pattern side 2NA V350510 1 2 1 ...
Page 27: ...27 PSR 740 PSR 640 ...
Page 28: ...28 PSR 740 PSR 640 ...
Page 32: ...32 PSR 740 PSR 640 ...
Page 33: ...33 PSR 740 PSR 640 ...