Lenovo ThinkServer TS200 Hardware Maintenance Manual page 65

• Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
• See Chapter 7 "Parts listing, TS200 Types 6522, 6523, 6524, 6525, 6526, 6528, 6529, and 6530" on page 209
to determine which components are customer replaceable units (CRU) and which components are field
replaceable units (FRU).
• If an action step is preceded by "(Trained service technician only)," that step must be performed only by
a Trained service technician.
• Go to the Lenovo support Web site at http://www.lenovo.com/support to check for technical information,
hints, tips, and new device drivers or to submit a request for information.
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:
• The server is turned on. If there is no power to the server, see "Power
problems" on page 59.
• The monitor cables are connected correctly.
• The monitor is turned on and the brightness and contrast controls are adjusted
correctly.
2. Make sure that the correct server is controlling the monitor, if applicable.
3. Make sure that damaged server firmware is not affecting the video; see
"Recovering the server firmware" on page 122.
4. See "Solving undetermined problems" on page 125.
1. Make sure that:
• The application program is not setting a display mode that is higher than
the capability of the monitor.
• You installed the necessary device drivers for the application.
2. Run video diagnostics (see "Running the diagnostic programs" on page 67).
• If the server passes the video diagnostics, the video is good; see "Solving
undetermined problems" on page 125.
• (Trained service technician only) If the server fails the video diagnostics,
replace the system board.
1. If the monitor self-tests show 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-Lenovo monitor cables might cause unpredictable problems.
2. Reseat the following components:
a. 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
57
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Chapter 4 Diagnostics