User manual AOPEN AP53-HW

[. . . ] Make sure that pin 1 of the CPU aligns with hole 1 of the socket. The notched corner on the CPU indicates the location of pin 1. Pin 1 indicator 3. Pull down the socket lever to lock the CPU into the socket. 2-4 Hardware Installation 4. Attach the heatsink and fan to the CPU. 5. Plug the fan cable onto the two-pin fan connector onboard. [. . . ] JP1301 5V (default) JP1302 12V 2. 7. 2 Disabling the Onboard Super I/O Controller The board is preset by the manufacturer with the onboard I/O controller enabled. In case you wish to use an external I/O controller, you need to disable the onboard I/O before the external I/O card functions. To disable, you need to reset jumper JP8 to 2-3. JP8 Enabled (default) Disabled 2-11 Hardware Installation 2. 7. 3 Selecting the ECP DMA Channel The available ECP DMA channel selections are DRQ3/DACK3 and DRQ1/DACK1. To select DRQ1/DACK1, reset jumpers JP6 and JP7 to 2-3. JP6 DRQ3/DACK3 (default) JP7 DRQ1/DACK1 The onboard I/O controller may either be SMC 665 or SMC 669. If you have SMC 669, JP6 and JP7 must be set to open. 2. 7. 4 Clearing the CMOS You need to clear the CMOS if you forget your system password. To do this, shut off the system power and short pins 2-3 of JP5 for a few seconds. Reset the jumper to normal setting by shorting pins 1-2. JP5 Normal (default) Clear CMOS 2-12 Hardware Installation 2. 7. 5 Disabling the PS/2 Mouse Function The PS/2 mouse function is normally enabled and occupies IRQ12. To reassign IRQ12 to another function, you need to disable the PS/2 mouse function by opening jumper JP4 and changing the BIOS setup. For detailed information on BIOS, see Chapter 3. JP4 Enabled (default) Disabled 2. 7. 6 Setting the Keyboard Clock The jumper JP1401 enables you to set the keyboard clock. The clock selections are ISA clock and 12 MHz. Set JP1401 to 1-2 to select the ISA clock. Reset it to 3-4 to set the keyboard clock to 12 MHz. JP1401 ISA clock (default) 12 MHz 2-13 Hardware Installation 2. 8 Installing the System Board Make sure that you have already installed the system board components like the CPU and memory, and have set the appropriate jumpers before you proceed. Follow these steps to install a system board into a housing: 1. Refer to the housing documentation for steps on how to remove the housing cover. Install the board into the housing and secure it with the screws that come with the housing. Attach the cables and install the necessary peripherals. See the following section for information on how to connect the peripherals. 2. 3. Refer to your housing documentation for more information on the system housing. 2-14 Hardware Installation 2. 9 Connecting Peripherals 2. 9. 1 Power Cable A standard power supply has two cables with six wires each. Plug these cables to the onboard power connector in such a way that all the black wires are in the center. [. . . ] Refer to the figure on how to connect an AT keyboard. The PS/2 keyboard connector is optional. 2-19 Hardware Installation 2. 10 Installing Expansion Boards Before you install any expansion board, make sure that you have secured the system board in the housing. Follow these steps to install an expansion board: 1. Observe the ESD precautions before removing the expansion board from its protective packaging. Locate an empty expansion slot on the system board. [. . . ]