Specifications
REV.-A
1.7.1
C076
MAIN Board (Main Control Circuit
The
C076
MAIN board is the main board in the printer,
mechanism driver circuit.
The
KPD70325
(location: IC5) is used, and the
1 M byte memory space.
Memories
5 12K\l M bits program ROM
1 M bits
PS-RAM
8M\4M\2M/l
M bits mask ROM (C.G)
Gate Arrays
Memory management unit
(E05A65)
Motor control unit
(E05A48)
Driver
CR motor (DC motor) driver (SLA4391)
PM motor (DC motor) driver
(SDH03)
Board)
and contains a logic circuit and printer
PF motor (Stepping motor) driver (STK67 12B)
Printhead driver
(MPD
16322)
Others
following memories and gate arrays are assigned in the
EEPROM
Reset
IC
(MB3771)
Reset
IC
(PST529C)
Switching Regulator
(TL494)
Lithium
battew
:Ic14
:IC
19/22/23
:lC3/4/24
:Ic12
:Iclo
:Ic17
:IC16
:Ic
11
:lC8/9
:IC2
:IC21
:IC7
:IC20
:BAT 1
A lithium battery in the battery circuit backs up the head cleaning timer while the printer power is off.
GA E05A48 CPU
PPD70325
P-ROM 5 12K
(Iclo)
(IC5)
(IC14)
~o
\
I
‘
‘N
‘
L
b
,~i
4
-
00
❑ n
=
o’
IJOQ
II
~11
II
0
1 M
PS-RAM
000
-
(IC19)
n
I
Mu
1--1
I
u
“p-RAM
(IC22))
BAT1/
GA
L05A65
(1C12)
c’
.,;
.
\
,..
Figure 1-13.
C076
MAIN Board
1-26