How are the motherboard front panel switches and indicators connected?

PWR On: ATX power switch. Short this pin to power on.

rst: restarts the switch. Short this pin and you don't need to power off the system to restart the computer.

PWR LED: Power indicator. This light will light up when the system is powered on.

HD LED: Hard Disk Indicator. This light illuminates when data is being accessed to the hard disk.

For this question, first of all, you need to understand what is the main function of each indicator? What does it mean?

In general, the indicators on the motherboard are:

CLK, bus clock, regardless of ISA or PCI, as long as an empty board (no CPU, etc.) is connected to the power supply, it should be always on, otherwise the CLK signal is bad.

BIOS, basic input and output, flashes when the motherboard is running on the BIOS with read operation. IRDY, the main device is ready, it will only flash when there is an IRDY signal, otherwise it will not be lit. OSC, oscillation, the main vibration signal of the ISA slot, the empty board should be always on, otherwise the vibration should be stopped.

frame, frame period, the light only flashes when the PCI slot has a loop frame signal, and it is usually always on.

rst, reset, turn on or press the reset switch after half a second to turn off must be normal, if not extinguished, often because the reset pin on the motherboard is connected to the plus Shen Bi land speed switch or the reset circuit is broken.

Extended Materials. The CLK should be always on, if it is not on, there is no clock, and whether the main power supply is normal should be considered. If the clock is low due to the slight brightness of the number base, it is generally necessary to consider whether the core power supply is low and the failure rate of the clock circuit itself.

Relatively small; reset, normal should be triggered at the moment of light and extinguished, no light or steady on is abnormal reset abnormal.

There are a lot of indicators on the motherboard, and when you connect the various ports, the indicators will light up. Each brand of motherboard has a different position of the joint, so the position of the indicator is different, but the indicator is located next to the joint, so that the user can observe whether the circuit is connected smoothly.

The motherboard indicator is not a fixed position, and the structure of different brands of computer motherboards is not the same, so the position of the interface indicator is not necessarily the same, and it depends on what brand of computer motherboard is used. The indicator light at the interface is very small, usually a small LED light of different colors.

When the user has successfully connected the circuit, the indicator will light up.

1. Power LED (power indication) should distinguish whether it is positive or negative, and the light on the chassis is not on.

Locate the three-pin plug labeled "Power LED", the middle line is empty, the two wires are missing, and the ends are white and green, respectively, and insert the plug labeled "PWR LED" or "P LED" on the motherboard.

2. HDD (hard disk indication) should distinguish between positive and negative and whether the light on the chassis is not on.

First, find the two plugs labeled ", the wires are white and red, and insert them into the pins on the motherboard labeled "HDD LED" or "IED LED".

Pay attention to the direction when plugging in, in general, the motherboard will be marked with "HDD LED+" and "HDD LED-", connect the red end to the HDD LED+ pin, and insert the white end into the pin labeled "HDD LED-".

3. Power (power switch).

Locate the two-pin plug (white and brown) labeled "Power Switch" on the chassis panel connection, and plug it into the plug labeled "PWR SW" or "RWR" on the motherboard.

However, since the power indicator side wiring uses LEDs to show work and rest, the connection is directional.

Some motherboards will be marked with the words "P LED+" and "P LED-", just need to connect the green end to the P LED+ pin and the white wire to the P LED pin.

4. Reset

To warm up your computer, first find the white and blue two-pin plug labeled "Reset SW" and plug it into the plug labeled "Reset SW" or "RSR" on the motherboard, some motherboards mark the PS+ as reset.

5. The speraker (small speaker) docks the cable on your chassis.

A lot of people don't like to plug in the cable, including the computer loader, which actually plays a big role in simply judging the fault of the computer, first of all, finding the four-pin plug of the "speaker". The middle two wires are empty, red and black at both ends, plug them into the pins labeled "Peaker" or "SPK" on the motherboard, the red plug is inserted into the positive terminal, and the black plug is inserted into the negative terminal.

This indicator is used to indicate the APS status of the motherboard.

APS is a function designed for performance and energy saving, which can provide dynamic conversion to provide the function of controlling power demand, it is designed for CPU, memory and chipset PWM, and has the advantage of dynamic adjustment under different loads to save power.

Steady on represents 3-phase power supply, and off represents 1-phase power supply

According to the motherboard, the general power indicator and the hard disk indicator must be there.

Different rings represent different contents during PC POST.

Righteousness, the following is the meaning of the common BIOS chip (Award AMI BIOS) ring:

award bios】

A short ?The system boots normally.

Two short ?CMOS general error, reset the wrong item.

One long and one shortIf there is a problem with the memory or motherboard, replace the memory.

One long and two shortGraphics card or monitor issues.

One long and three shortKeyboard controller error.

One long and nine shortBIOS error replacement flash fram keeps ringingThe memory is not plugged in tightly or is broken.

Ringing non-stopPoor contact between the power supply display and the graphics card.

SilentlyCheck the power supply.

ami bios】

A short ?The memory refresh fails, try to change the memory.

Two short ?Memory ECC verification error. Turn off CMOS

Three short ?The basic memory check of the system fails, and it is replaced.

Four short ?The system clock is incorrect.

Five short ?**Processor CPU error.

Six short ?Keyboard controller error.

Seven short ?The system real mode is incorrect.

Eight short ?Video memory error, try to change the graphics card.

Nine short ?There was an error with the BIOS chip.

One long and three shortMemory module error, replacement.

One long and eight shortThe graphics card or monitor cable is loose.

The blue light is always on, indicating work. Whether the red light is on or not depends on the speed of the hard drive. The hard drive is busy and the red light will be on, otherwise it will not be on.

Power indicator cable.

phase or mu close button.

Power switch: white + positive, brown - negative can be plugged in and out.

Reset switch: white and blue, front and back plug can be casual.

Power indicator: green plugged into the p led+ pin, white shirt plugged into the p led-pin.

Hard Disk Indicator: Red plugged into "HDD LED+", white plugged in on "HDD LED-" pin.

Speaker: red plug in the positive pole, black Nai color plug in the negative pole. According to its working principle, it can be plugged in and used regardless of the positive and negative poles.

Power indicator cable.

phase or mu close button.

Power switch: white + positive, brown - negative can be plugged in and out.

Reset switch: white and blue, front and back plug can be casual.

Power indicator: green plugged into the p led+ pin, white shirt plugged into the p led-pin.

Hard Disk Indicator: Red plugged into "HDD LED+", white plugged in on "HDD LED-" pin.

Speaker: red plug in the positive pole, black Nai color plug in the negative pole. According to its working principle, it can be plugged in and used regardless of the positive and negative poles.

Not all ASUS motherboards have an indicator switch, so if you need to turn it off along with the indicator after shutting down, it is recommended to unplug the main unit.

When the RGB is separated, it is controlled separately, although it can be controlled directly, and the color mixing is also good, but it is a big problem to achieve the pure white light of the mixture, although the cost is expensive, but the quality is relatively good.

Although the cost is cheap, it can directly replace CCFL and become the main technology of LED, but compared with flutter cracking, it is packaged together because of the problem of wavelength and frequency, so the scattering situation will be unstable.