Dell Alienware x16 R2 Owners Manual - Page 26

Safety precautions, Electrostatic discharge—ESD protection, Standby power, Bonding

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CAUTION: If you are unable to turn on the computer to put it into Service Mode, or the computer does not support Service Mode, disconnect the battery cable. To disconnect the battery cable, follow the steps in Removing the battery. NOTE: Ensure that your computer is shut down and the AC adapter is disconnected. a. Hold the key on the keyboard and press the power button for 3 seconds or until the Dell logo appears on the screen. b. Press any key to continue. c. If the AC adapter is not disconnected, a message prompting you to remove the AC adapter appears on the screen. Remove the AC adapter and then press any key to continue the Service Mode process. The Service Mode process automatically skips the following step if the Owner Tag of the computer is not set up in advance by the user. d. When the ready-to-proceed message appears on the screen, press any key to proceed. The computer emits three short beeps and shuts down immediately. e. Once the computer shuts down, it has successfully entered Service Mode. NOTE: If you are unable to turn on your computer or unable to enter Service Mode, skip this process. Safety precautions The safety precautions chapter details the primary steps to be taken before performing any disassembly instructions. Observe the following safety precautions before you perform any installation or break or fix procedures involving disassembly or reassembly: ● Turn off the computer and all attached peripherals. ● Disconnect the computer and all attached peripherals from AC power. ● Disconnect all network cables, telephone, and telecommunications lines from the computer. ● Use an ESD field service kit when working inside any to avoid electrostatic discharge (ESD) damage. ● After removing any computer component, carefully place the removed component on an anti-static mat. ● Wear shoes with non-conductive rubber soles to reduce the chance of getting electrocuted. Standby power Dell products with standby power must be unplugged before you open the case. Systems that incorporate standby power are powered while turned off. The internal power enables the computer to be remotely turned on (Wake-on-LAN) and suspended into a sleep mode and has other advanced power management features. Unplugging, pressing, and holding the power button for 15 seconds should discharge residual power in the system board. Bonding Bonding is a method for connecting two or more grounding conductors to the same electrical potential. This is done by using a field service electrostatic discharge (ESD) kit. When connecting a bonding wire, ensure that it is connected to bare metal and never to a painted or nonmetal surface. The wrist strap should be secure and in full contact with your skin, and ensure that you remove all jewelry such as watches, bracelets, or rings prior to bonding yourself and the equipment. Electrostatic discharge-ESD protection ESD is a major concern when you handle electronic components, especially sensitive components such as expansion cards, processors, memory DIMMs, and system boards. Slight charges can damage circuits in ways that may not be obvious, such as intermittent problems or a shortened product life span. As the industry pushes for lower power requirements and increased density, ESD protection is an increasing concern. Due to the increased density of semiconductors used in recent Dell products, the sensitivity to static damage is now higher than in previous Dell products. For this reason, some previously approved methods of handling parts are no longer applicable. Two recognized types of ESD damage are catastrophic and intermittent failures. ● Catastrophic - Catastrophic failures represent approximately 20 percent of ESD-related failures. The damage causes an immediate and complete loss of device functionality. An example of catastrophic failure is a memory DIMM that has received 26

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CAUTION: If you are unable to turn on the computer to put it into Service Mode, or the computer does not support
Service Mode, disconnect the battery cable. To disconnect the battery cable, follow the steps in
Removing the battery
.
NOTE:
Ensure that your computer is shut down and the AC adapter is disconnected.
a.
Hold the
<B>
key on the keyboard and press the power button for 3 seconds or until the Dell logo appears on the screen.
b.
Press any key to continue.
c.
If the AC adapter is not disconnected, a message prompting you to remove the AC adapter appears on the screen. Remove
the AC adapter and then press any key to continue the
Service Mode
process. The
Service Mode
process automatically skips
the following step if the
Owner Tag
of the computer is not set up in advance by the user.
d.
When the
ready-to-proceed
message appears on the screen, press any key to proceed. The computer emits three short beeps
and shuts down immediately.
e.
Once the computer shuts down, it has successfully entered Service Mode.
NOTE:
If you are unable to turn on your computer or unable to enter Service Mode, skip this process.
Safety precautions
The safety precautions chapter details the primary steps to be taken before performing any disassembly instructions.
Observe the following safety precautions before you perform any installation or break or fix procedures involving disassembly or
reassembly:
●
Turn off the computer and all attached peripherals.
●
Disconnect the computer and all attached peripherals from AC power.
●
Disconnect all network cables, telephone, and telecommunications lines from the computer.
●
Use an ESD field service kit when working inside any to avoid electrostatic discharge (ESD) damage.
●
After removing any computer component, carefully place the removed component on an anti-static mat.
●
Wear shoes with non-conductive rubber soles to reduce the chance of getting electrocuted.
Standby power
Dell products with standby power must be unplugged before you open the case. Systems that incorporate standby power are
powered while turned off. The internal power enables the computer to be remotely turned on (Wake-on-LAN) and suspended into a
sleep mode and has other advanced power management features.
Unplugging, pressing, and holding the power button for 15 seconds should discharge residual power in the system board.
Bonding
Bonding is a method for connecting two or more grounding conductors to the same electrical potential. This is done by using a field
service electrostatic discharge (ESD) kit. When connecting a bonding wire, ensure that it is connected to bare metal and never to
a painted or nonmetal surface. The wrist strap should be secure and in full contact with your skin, and ensure that you remove all
jewelry such as watches, bracelets, or rings prior to bonding yourself and the equipment.
Electrostatic discharge—ESD protection
ESD is a major concern when you handle electronic components, especially sensitive components such as expansion cards, processors,
memory DIMMs, and system boards. Slight charges can damage circuits in ways that may not be obvious, such as intermittent
problems or a shortened product life span. As the industry pushes for lower power requirements and increased density, ESD
protection is an increasing concern.
Due to the increased density of semiconductors used in recent Dell products, the sensitivity to static damage is now higher than in
previous Dell products. For this reason, some previously approved methods of handling parts are no longer applicable.
Two recognized types of ESD damage are catastrophic and intermittent failures.
●
Catastrophic
– Catastrophic failures represent approximately 20 percent of ESD-related failures. The damage causes an
immediate and complete loss of device functionality. An example of catastrophic failure is a memory DIMM that has received
26