IBM IntelliStation Z Pro 6221, Hardware Maintenance Manual

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Microphone connector (pink)
This connector is used to connect a microphone to record voice or other
sounds on the hard disk. You can also use this connector (and a
microphone) with speech recognition software.
Power-control button
Press this button to turn the computer on and off manually. You can install a
circular disk, called the power-control button shield, over the power-control
button to prevent accidental manual power-off. This disk is provided with
your computer.
Power-on LED
When this LED is lit and does not flash, it indicates that the computer is
turned on. When this LED is flashing, it indicates that the computer is off
and still connected to an ac power source (standby mode).
System error LED
When this LED is lit, it indicates that a system error has occurred. An LED
on the system board might also be lit to help isolate the error. See
“System-board error LEDs” on page 21 and “Diagnostics” on page 15 for
additional information.
USB ports
Use these automatically configures ports to connect universal serial bus
(USB) v2.0 devices to your computer, using Plug and Play technology.
Turning on the computer
When the computer is connected to an ac power source but is not turned on, the
operating system does not run, and all core logic is shut down; however, the
computer can respond to remote requests to turn on the computer. The power-on
LED flashes to indicate that the computer is connected to an ac power source but is
not turned on (standby mode).
Notes:
1. Turn on all external devices, such as the monitor, before turning on the
computer.
2. The power-on LED on the front of the computer is lit when the computer is on
and while it is powering-up.
3. You can install a circular disk over the power-control button to prevent
accidental manual power-off. This disk, known as the power-control button
shield, comes with your computer.
Approximately 20 seconds after the computer is connected to ac power, the
power-control button becomes active, and you can turn on the computer and start
the operating system by pressing the power-control button. The computer can also
be turned on in any of the following ways:
v If a power failure occurs while the computer is turned on, the computer will
restart automatically when power is restored.
v
When you plug in your computer for the first time, Wake on LAN
®
can turn on the
computer.
v If your computer was previously turned on, it must be properly turned off for the
Wake on LAN feature to turn on the computer.
What you see and hear when you start your computer depends on the features that
are installed and the settings in the Configuration/Setup Utility program.
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IBM IntelliStation Z Pro Type 6221: Hardware Maintenance Manual