Circuit - Epson LQ-1050 Technical Manual

REV.-A
2.3.6 Carriage and Paper Feed Motors Control Circuit
This printer employs an E05A09BA gate array
motor and paper feed motor). This gate array can independently control the stepper motors so that the
CPU load is reduced. Figure 2-47 shows a block diagram of this circuit.
C A R R I A G E
MOTOR
+ 3 5
PHASE PULSES
REFERANCE
. vOLTAGE
GENERATION
C I R C U I T
OOWN
GP
Fig.2-47. Carriage and Paper Feed Motors Control Circuit
2A) to control the two stepper motors (the carriage
'
00 I
3
c o t
u u
MC U
(2A)
2-46
MM
MM U
3
P C ?
Pc 2
C P U
(7B )
1
G P