Epson LQ 1050 - B/W Dot-matrix Printer - Page 209

REV.-A
A.1.6 NJ M2355
The NJ M2355 function is identical to the TL949 functions. It is a pulse-width modulation control circuit
Ic.
Figure A-1 4 shows the NJ M2355 internal circuit diagram.
+IN -IN
+IN -IN FEED
:E&
POWER
BACK
Vcc
c: z
GND
CONTROL
~
m m
m
m m m m
c
( P
[L. V . S/
( t
El
Vref
CT
RT
+IN
-IN
FEED 12:EA; SY:J:M
BACK
CONTROL
cl
Figure A-14. NJM2355 Internal Circuit Diagram
A-23