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Interface unit
USB
LAN Board
(Option)
Centronics
driver/receiver
RS Board
(Option)
Figure 5.3.5 Internal circuit block diagrams
Main control unit
USB 8bit
Controller
EEPROM
MBCG461
MB90706
Printer
controller
control LSI
Control
panel
Sensor
Display
board
panel
Operation
switches
133
Power supply unit
+5V
ROM
RAM
MBCG461
83-525PFV
83-520PF
Motor
Head
control LSI
Carriage
board
Mechanical unit
+34V
Driver unit
Motor
driver
Head
driver
Head
Motor
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