© 2011 MIMAKI ENGINEERING CO.,LTD.
2.3.2
P.1
R.1.0
2.3.2 Main PCB Assy
Outline
Board name: Main PCB Assy
The CPU used is SH-3 (RISC, 133MHz) made by Hitachi.
A program for the CPU is written in flash memory. Version up of this program is easily executed on site through I/F.
The version up is carried out by downloading the program to PRAM through CPU and then by writing it in the flash
memory.
When received data is read from I/F, the CPU writes the data in PRAM through PDC. Then the data, after being sub-
jected to required processes by PDC-CTR, is transmitted to the HDC.
Receiving the data, the HDC creates head driving COM signals and nozzle data, and then transmits each data to the
slider PCB assy via HDC FFC cable.
The main PCB assy also has X, Y-axis motor driving circuit and other I/O control circuits.
Flash-
ROM
32Mb×2
SRAM
16Mb×2
Main PCB
CPU
SH-7790S
131MHz
RTC
&Batt.
Power
source
+42V
+24V
+5V
+3.3VSB
+5VSB
PDC
PLL
24.576
MHz
X motor
Y motor
USB
M66592
PDC+IOC
EP2C20F484C8N-NW
DMA 8
16
16
Flash
ROM(4MB)
32Mb
16
PRAM
PCB
8
XTAL
8.192
MHz
Station
4
4
16
FW debug
Serial I/F
Heater
control
X-axis
motor relay
G/A
servo
adjust
jig
HDC
XC3S1500-
4FGG456C
OSC
40
MHz
XTAL
24MHz
PDC PLL
40MHz
SDRAM
32MB
Regenerative
resistance PCB
Debug board
Flash-
ROM
32Mb x 2
Keyboard
Servo G/A
E300411
80MHz
40MB/s
(MAX)
DMA 32
66MB/s(MAX)
33MHz
Extension
IF
IF
connection
board
32
SRAM
16Mb x 2
(BGA)
80MHz
(BGA)
SDRAM
256Mbx4
(x8)
(512Mbx8)
PRAM
PCB
Slider
SDRAM
256Mbx4
(x8)
(512Mbx8)
32
40
Extension
Relay
PCB
X-Z relative
80MHz
MAINTENANCE MANUAL > Electrical Parts > Circuit Board Specifications > Main PCB Assy
Model
TS34-1800A
Issued 2011.10.17 Revised
F/W ver.
1.20
Remark
1.0