Power Problems - IBM IntelliStation Z Pro 6223 Installation Manual

Symptom
The monitor has screen jitter, or
the screen image is wavy,
unreadable, rolling, or distorted.
Wrong characters appear on the
screen.

Power problems

Symptom
The power-control button does
not work, and the reset button,
if supported, does work.
The computer does not turn on. v Make sure that the power cords are correctly connected to the computer.
The computer does not turn off. Determine whether you are using an ACPI or non-ACPI operating system. If you
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IntelliStation Z Pro Type 6223: Installation Guide
Suggested action
If the monitor self-tests show that the monitor is working correctly, consider the
location of the monitor. Magnetic fields around other devices (such as transformers,
appliances, fluorescent lights, and other monitors) can cause screen jitter or wavy,
unreadable, rolling, or distorted screen images. If this happens, complete the
following steps:
1. Turn off the monitor.
Attention: Moving a color monitor while it is turned on might cause screen
discoloration.
2. Move the device and the monitor at least 300 mm (12 in.) apart, and turn on
the monitor.
Notes:
1. If you have attached a diskette drive to the computer, make sure that the
distance between the monitor and diskette drive is at least 75 mm (3 in.) to
prevent diskette drive read/write errors.
2. Non-IBM monitor cables might cause unpredictable problems.
3. An enhanced monitor cable with additional shielding is available for the 9521
and 9527 monitors. For information about the enhanced monitor cable, contact
your IBM marketing representative or authorized reseller.
If the problem remains, call for service.
If the wrong language is displayed, update the BIOS code with the correct
language.
If the problem remains, call for service.
Suggested action
Call for service.
v Make sure that the electrical outlet functions correctly.
v Make sure that the type of memory installed is correct.
v If you just installed an option, remove it, and restart the computer. If the
computer now turns on, you might have installed more options than the power
supply supports.
If the problem remains, call for service.
are using a non-ACPI operating system, complete the following steps:
1. Press Ctrl+Alt+Delete.
2. Turn off the computer by holding the power-control button for 4 seconds.
3. If the computer fails during POST and the power-control button does not work,
remove the ac power cord.
If the problem remains or if you are using an ACPI operating system, call for
service.