Epson MX-100 Operation Manual page 89

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Logic block diagramo of the driver circuit
9 > 2SD386
"1
H,
H4
H»
H.
H,
\
0 ^
0 ^
0 J-
0 ^
/
0 ^
H,
H,
555Q O-
Head Q.
Trigger
CRA o-
CRB O-
CRC o-
CRO O-
LFA O
LFB O-
LFC O-
LFD O-
4 V 2SD98«
.CRA
CRB
CRC
CRD
LFA
LFB
LFC
LFO
KTsj.