?
DSP
(
IC3)
Digital Signal Processor works for color changing or enhance of edge of an image.
?
Control IC
(
IC2
)
A Gate array to control the printer activated on the clock of 20 MHz.
This IC controls following items by setting from CPU
>
To control the transfer of the image data to DRAM and also image rotating function.
>
To control the thermal head
>
Interface for SCSI or USB 2.0 control IC
>
To control the LCD
>
To supply driving signals for PM 1-3
>
To generate the control signal for DM1
>
To control sensors
1.3.3 Interface Board
(
PBA-I/F
)
Interface board applies to SCSI- 2 or USB 2.0 standard.
<
SCSI 2 type interface board
>
There are two "half 50" pin connectors on the interface board. Also, there is a
connector for connecting the optional device.
?
Serial interface driver (IC4)
Translates the signal of CPU to RS422 level for the communication with the
attached optional equipment.
?
SCSI Controller
(
IC2
)
Operates on the clock frequency
(
OSC1
)
of 20MHz and controls SCSI bus.
?
SCSI terminator
(
IC3
)
An active terminator IC supporting the SCSI specification, which terminates the
SCSI
bus by the input of the switch
(
SW2
)
located on the backside of the printer.
<
USB 2.0 type interface board
>
There is B type connectors on the interface board. Also, there is a connector for
connecting the optional device.
?
Serial interface driver
(
IC2
)
Translates the signal of CPU to RS422 level for the communication with the
attached optional equipment.
?
USB controller
(
IC1
)
Controls the interface USB 2.0 bus. (generated by OSC1
)
