Asus P4B-LS Motherboard DIY Troubleshooting Guide - Page 25

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2.3 Before you proceed Take note of the following precautions before you install motherboard components or change any motherboard settings. 1. Unplug the power cord from the wall socket before touching any component. 2. Use a grounded wrist strap or touch a safely grounded object or to a metal object, such as the power supply case, before handling components to avoid damaging them due to static electricity. 3. Hold components by the edges and do not to touch the ICs on them. 4. Whenever you uninstall any component, place it on a grounded antistatic pad or in the bag that came with the component. 5. Before you install or remove any component, ensure that the ATX power supply is switched off or the power cord is detached from the power supply. Failure to do so may cause severe damage to the motherboard, peripherals, and/or components. When lit, the green LED (LED1) indicates that the system is ON, in sleep mode, or in soft-off mode, a reminder that you should shut down the system before removing of plugging in any motherboard component. The red LED (WARNING) is a smart protection from motherboard burn out caused by an incorrect AGP card. If you plug in any 3.3V AGP card into the 1.5V AGP slot, this LED lights up thus preventing the system to power up. This LED remains off if you plug in a 1.5V AGP card. (This feature is present on PCB R1.05 and later versions.) WARNING ® P4B-LS ON Incorrect AGP Card OFF Correct AGP Card LED1 P4B-LS Onboard LED Figure 2-3 Onboard LEDs ON Standby Power OFF Powered Off ASUS P4B-LS motherboard user guide 2-3

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ASUS P4B-LS motherboard user guide
2-3
2.3
Before you proceed
Take note of the following precautions before you install motherboard
components or change any motherboard settings.
1.
Unplug the power cord from the wall socket before touching any
component.
2.
Use a grounded wrist strap or touch
a safely grounded object or to
a metal object, such as the power supply case, before handling
components to avoid damaging them due to static electricity.
3.
Hold components by the edges and do not to touch the ICs on them.
4.
Whenever you uninstall any component, place it on a grounded
antistatic pad or in the bag that came with the component.
5.
Before you install or remove any component, ensure that the
ATX power supply is switched off or the power cord is
detached from the power supply.
Failure to do so may cause
severe damage to the motherboard, peripherals, and/or
components.
Figure 2-3
Onboard LEDs
When lit, the green LED (LED1) indicates that the system is ON, in
sleep mode, or in soft-off mode, a reminder that you should shut down
the system before removing of plugging in any motherboard
component.
The red LED (WARNING) is a smart protection from motherboard burn
out caused by an incorrect AGP card. If you plug in any 3.3V AGP card
into the 1.5V AGP slot, this LED lights up thus preventing the system to
power up. This LED remains off if you plug in a 1.5V AGP card.
(This feature is present on PCB R1.05 and later versions.)
P4B-LS
P4B-LS Onboard LED
WARNING
ON
Incorrect
AGP Card
OFF
Correct
AGP Card
LED1
OFF
Powered
Off
ON
Standby
Power