IBM xSeries 206m, Руководство по диагностике и обслуживанию

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v Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v
See Chapter 3, “Parts listing, Type 8849 and Type 8491 server,” on page 19 to determine which
components are customer replaceable units (CRU) and which components are field replaceable units
(FRU).
v
If an action step is preceded by “(Trained service technician only),” that step must be performed only by a
trained service technician.
Symptom Action
The monitor works when you
turn on the server, but the
screen goes blank when you
start some application
programs.
1. Make sure that:
v The application program is not setting a display mode that is higher than the
capability of the monitor.
v
You installed the necessary device drivers for the application.
2. Run video diagnostics (see “Running the diagnostic programs” on page 89).
v
If the server passes the video diagnostics, the video is good; see “Solving
undetermined problems” on page 110.
v (Trained service technician only) If the server fails the video diagnostics,
replace the system board.
The monitor has screen jitter, or
the screen image is wavy,
unreadable, rolling, or distorted.
1. If the monitor self-tests show the that 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, turn off the monitor.
Attention: Moving a color monitor while it is turned on might cause screen
discoloration.
Move the device and the monitor at least 305 mm (12 in.) apart, and turn on
the monitor.
Notes:
a. To prevent diskette drive read/write errors, make sure that the distance
between the monitor and any external diskette drive is at least 76 mm (3
in.).
b. Non-IBM monitor cables might cause unpredictable problems.
2. Reseat the following components:
v
Monitor cable
v
Remote Supervisor Adapter II (if one is present)
3. Replace the following components one at a time, in the order shown, restarting
the server each time:
a. Monitor cable
b. Monitor
c. Remote Supervisor Adapter II (if one is present)
d. (Trained service technician only) System board
Wrong characters appear on the
screen.
1. If the wrong language is displayed, update the BIOS code (see “Updating the
firmware” on page 11) with the correct language.
2. Reseat the monitor cable.
3. Replace the following components one at a time, in the order shown, restarting
the server each time:
a. Monitor
b. (Trained service technician only) System board
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IBM xSeries 306m Types 8849 and 8491: Problem Determination and Service Guide