Sony GDM-2000TC - Manual (Page 13)

Troubleshooting
This section m
continued productivity.
Symptom Check these items
No picture
If neither (!) (power)
indicator nor I’OWHK
SAVINti indicator is lit
• Check that the power cord is prtiperlv connected.
• Check that the power switch is in the "ON" position.
IfPOWKR SAVING
indicator is lit • Check that your computer power switch is in the "ON" position.
• Check that the video cable is properly connected and all plugs are firmly seated in thc'ir sockets.
- • Ensure that no pins are bent or pushed in tlie HD13 connector of the cable.
• Check that the video card is seated completely in a proper bus slot. There may be a particular bus slot
specified for your video board to be seated among 8, 16, and VL-Bus slots.
• If the impedance switch on the back of the monitor is set to trv switching to 2 k il .
• Check that the video sync signal is within that specified for the monitor.
(fH: 31.3 - 85 kHz, fV:' 50 - 150 Hz)
• If using a Mac system, check that a proper HD15-015 adaptor is provided to work correctly with vour Mac.
• Check that the signal cable and 1X2 cable are connected to the monitor.
If Ci) (power) and I’OWER
SAVING indicators are
both flashing
• If the impedance switch on the back of the monitor is set to 75U, turn off the monitor, move the switch to 2
ki2, and turn on the monitor. If the indicators are still flashing, there is a potential monitor failure. Contact
your dealer.
I’icturc is scrambled • If the impedance switch on the back of the monitor is set to 7 b i l, try switching tt) 2 k£2.
• Check your graphic board manual for proper monitor setting on your GDM-20()()TC,
• Check this manual and confirm that the graphic mode and the frequency at which you are trying to
operate is supported. Even within the proper range some video boards may have a sync pulse that is too
narrow for the monitor to sync correctly.
Color is not uniform • Trip the power switch once to activate the Auto degauss cycle, or activate the DEGAUSS feature in the
main menu (page 9). This function is to demagnetize the metal frame of the CRT to obtain neutral field for
uniform color reproduction. If a second degauss cycle is needed, allow a minimum interval of 20 minutes
for the best result.
• Do the Uniformity adjustment procedure properly (page 10, 11).
White does iiot look white • Check that the 5 BNC's are connected in the right order, (from power cord side: Ked-Green-Blued ID-VD)
• Perform the color temperature adjustment (page 9).
• If the'video format is not listed in the compatibility table on page 6, there may be a background level
problem (background too bright or greenish). Try the black level clamp toggle switch (page 9).
Screen image is not centered • Adjust the V CENTER or H CENTER in GEOMETRY menu (page 9),
Screen image size is not
right • Adjust the V SIZE or H SIZE (page 9).
• Some video modes do not fill the screen to the edge of the monitor. There is no single answer to solve the
problem. There is a tendency to have this problem on higher refresh timings and Macintosh video timings.
Screen image is tilted • Adjust the "RASTER ROTATION" in the GEOMETRY menu (page 9).
Edges of the image are
curved
• Adjust the "PINCUSION" in the GEOMETRY menu (page 9).
Red or blue shades are
found at the edge of images • Adjust the "V CONV" or "H CONV" in the CONVERGENCE menu (page 9).
Picture is fuzzy • Adjust the "Contrast" and "Brightness" controls (page 7). We have come across several brands of SVGA
boards that have an excessive video output level which creates fuzzy picture at max contrast.
• Trip the power switch once to activate the Auto-degauss cycle. This function demagnetizes the metal
frame of the CRT to obtain a neutral field for uniform color reproduction. If a second degauss cycle is
needed, allow a minimum interval of 20 minutes for the best result.
• If a white line shows color shades, adjust the "V CONV" or "11 CONV" setting in the CONVERGENCE
menu to see if the shades are eliminated.
Picture bounces or has wavy
oscillations
• Move electrical (magnetic) devices that may be creating etpc'trical interference away from the monitor.
• If you have another monitor dose to this monitor, increase the distance between them to reduce the
interference.
• Your office may have electric power wiring behind the wall. Move the monitor away from the wall.
Uniformity adjustment
cannot be done
• Check that the RGB sensor is correctly connected.
• C heck that you place on the RGB sensor on the correct screen position.
"BCE" flashes in magenta
repeatedly. • Try setting the clamp pulse again (see page 9).
If the problem persists, call your authorized Sony dealer from a location near your monitor.
Note the model name and the serial number of your monitor. Also note the make and name of your computer and video
board.
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