Hdd; Serial Ports; Parallel Port; Vga - Casio QT-7300 Service Manual

4-3. HDD

The standard QT-7300 already builds in a 2.5" hard disk drive. To maintain the HDD, follow the installation
instructions below and check the list of HDD tested as the QT-7300.
1. Take out the screws, the IDE cable and remove the HDD.
2. Reinstall the new HDD on the bracket. The four rubber stands act as cushions to lessen the vibration which
usually causes damage to a mechanical device like a HDD.
3. Connect the IDE cable to the HDD. Match pin 1 of the HDD and the pin 1 of the cable.

4-4. Serial Ports

QT-7300 four onboard serial ports. Since the touch screen system requires one dedicated serial port interface
and COM1 is assigned for it, so that COM1 is not available for users. For the QT-7300, COM2 and COM4 are
RS-232, selected by jumpers. Each serial port is with +5V/+24V and +12V/+24V power capabilities on pin 1 and
pin 9, ready to accommodate a wide array of serial devices. COM2 to COM4 are all D-SUB 9-pin connectors.

4-5. Parallel Port

The printer interface is a 25-pin D-SUB connector located on the bottom side. To connect any parallel device,
just plug in the device connector to the 25pin D-SUB. There are variety of parallel port peripherals in the market
and interface specification vary depending on the peripherals. The peripherals which have been confirmed with
the QT-7300 terminals are listed in the Appendix and others may not be supported. Please confirm connectivity
of each peripherals before install to the customer site.

4-6. VGA

The QT-7300 has an analog RGB interface connector installed on the bottom side. It is able to connect to an
expansion CRT monitor, and the system can display on both the LCD display and the CRT individually or
simultaneously. However, as the LCD display adapted is of the resolution of 800 x 600, therefore, to support a
CRT monitor simultaneously, the CRT's VGA resolution has to be set to 800 x 600, too. It can also support CRT
maximum resolution of up to 1600 x 1200 with 8bit on Dual-Display Mode colors. Also, an automatic horizontal
frequency detective type CRT is only approved.

4-7. Ethernet

The QT-7300 provide a high performance Ethernet (RJ-45) interface. For network connection, just plug in one
end of cable of a 10/100-Base-T hub to the standard Ethernet phone jack. The pin assignment of the RJ-45 is
listed below;
RJ-45 Connector Pin Assignment
Pin
1 Tx+ (Data transmission positive)
2 Tx- (Data transmission negative)
3 Rx+ (Data reception positive)
6 Rx- (Data reception negative)
others Not use
Description
— 12 —
1 2 3 4 5 6 7 8
RJ-45