Epson TM200 - 2.3 Main Circuit Board Unit

TM200 Service Manual
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Au toc utt e r Module
T h is p r i n ter is e q uip p ed wi th an aut ocut ter module for cu tt ing of t he rol l pap e r
a
n d a manu al c u tt er f o r manu al c u tt ing .
T he autocu tt e r ha s two opp o sing cut t er bla d es t h at ope r at e l i ke a sci ssors t o cu t t he
p
a per . I t i s a sep a ra te cutt er b l ad e-ty pe mecha nism t h at d o es not r e qui r e p assag e of t he
r
o ll pap e r t h r ough an au toc u tt er mech anism sl it . Op ening the frame co v e r causes t he
st
ati o na ry bl ad e to sep a r a te co m p let e l y from t he mov i ng b l ad e. T he sta t i o nar y blad e i s
fixed
to the fr ame cov e r, whil e the mov i ng blad e i s att a ched t o th e m a in fr ame.
A ut o c ut te r op era t io n
T he frame c o v e r can b e closed whi l e the mov a ble b l ad e is i n t he home po sit i on .
Clo
s i n g the fr ame cov e r causes t he st ati o nar y bl ad e to come in to p a r t i a l cont act
wit h th e pap e r cut t er frame, an d t he sta t i o nar y bla d e a n d mov a ble b l ad e are
b
r oug ht i nto rel a t i v e po s i ti on.
Cutter b l ad e k n ob
T he mo v a b l e b l ad e is i n the ho me posi ti on whenev er c u tt er o p era t i o n i s n o t bein g
per
f ormed . In ad d i t i on to sa f e ty consid era t i o ns, t h is en ab l e s a mech anism i n whi ch th e
frame co
v e r cannot be op ened or clo s e d whi l e the mov a ble b l ad e is no t i n t he home
po
sit i on .
2.3 Main Circuit Board Unit
The main cir c ui t boar d unit i s m a d e u p of t he fol l o w ing elec tr ica l ci rcu i t s :
 CPU and CP U per i p heral l o gi c ci rcu i t s
CPU
RAM
ROM
Ga
te a rr a y
Reset c i rcu i t
 T M200 c o ntr o l cir c ui ts
T hermal head d r i v e circuit
Pa per feed mot o r d riv e ci rcu i t
Aut o cu tte r d r i v e c i r c ui t
D e tect or cir c ui ts
 Con trol p a nel cont rol ci rcu i t s
 D r awer ki ck contr o l cir c ui t
 Po wer sup p l y c i rc uit s
 Filter c i rc uit s
+24 V out put ci rcui t
+5V o u tput cir c ui t