IBM 9234CNU - Lotus Foundations Server Service Manual page 117

Lotus foundations appliance, type 9234 cnu and 9234 dnu problem determination and service guide
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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, Lotus Foundations Appliance Type 9234," 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
The screen is blank.
The monitor works when you
turn on the server, but the
screen goes blank when you
start some application
programs.
The monitor has screen jitter, or
the screen image is wavy,
unreadable, rolling, or distorted.
Action
1. Make sure that:
v The server is turned on. If there is no power to the server, see "Power
problems" on page 101.
v The monitor cables are connected correctly.
v The monitor is turned on and the brightness and contrast controls are
adjusted correctly.
v A single beep sounds when the server is turned on, indicating the successful
completion of POST.
2. Make sure that the correct server is controlling the monitor, if applicable.
3. Make sure that damaged BIOS code is not affecting the video; see "Updating
(flash-update) the BIOS code on the server" on page 109.
4. See "Solving undetermined problems" on page 119.
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.
v If the server passes the video diagnostics, the video is good; see "Solving
undetermined problems" on page 119.
v (Trained service technician only) If the server fails the video diagnostics,
replace the system board.
1. 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, 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 monitor cable.
3. Reseat the Remote Supervisor Adapter II SlimLine (if one is installed).
4. Replace the following components one at a time, in the order shown, restarting
the server each time:
a. Monitor
b. Remote Supervisor Adapter II SlimLine
c. (Trained service technician only) System board
99
Chapter 5. Diagnostics

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