Troubleshooting
212 TVM Series Installation and Operation Handbook
Copyright © 2008, Harris Corporation
2. Once the message appears, the Warm start is complete.
Cold Start after VFlash
After a VFlash update is performed, cycle the power and perform a cold start to
continue. To perform a Cold Start after a VFlash update:
1. Unplug the power to the TVM/TVM device and wait 30 seconds.
2. Plug the power back into the device while pushing and holding the SETUP button,
UP/DOWN knob, and RIGHT/LEFT knob. Hold the buttons until the display
appears.
3. Once the quad display appears, the cold start is complete.
Problems, Causes, and Solutions
Table 7-1. TVM Series: Problems, Causes, and Solutions
Problem/Symptom Possible Cause Solution or Explanation
The monitor is not powered up. Check to see that the monitor is
plugged in and powered up.
No display on external XGA
monitor
The full-screen picture display is
selected but no signal is present
on the input selected.
Press DISPLAY to de-select the
full-screen picture display.
Display on External XGA
monitor is not centered
The XGA monitor is not correctly
adjusted.
Use the monitor controls to center
the display.
The video signal is too low in
amplitude or the sync edge is too
noisy.
Verify that the External Reference
signal is of sufficient amplitude.
Waveform not locked when
External Reference
(EXT REF) is selected
EXT REF is selected but there is
no reference input, or the External
Reference is non-synchronous.
Select Internal Reference (INT
REF) and/or verify that the
External Reference signal is
synchronous.
Waveform not locked when
External Reference
(EXT REF) is selected (cont)
External Reference inputs are not
connected properly for the
configuration.
Check that the external reference
configuration is in the expected
mode (Loop or Split).
If in loop mode, there should only
be one input signal. If in split
mode, the Blackburst signal should
be applied to the REF A input,
while a Tri Level signal should be
applied to the REF B input.
Audio level reading too low The input reference level is not
correctly set.
Use the SETUP MENU to check
the input reference level setting.
When displaying an A&B or
C&D parade, the second
display is not locked or is
offset
The two signals are not
genlocked or are not timed.
Genlock or time the signals.
There is excessive cable length. Add digital DA to cable run.
Add reclocking DA to cable run.
Eye Pattern not clear
There is excessive jitter. Source is causing jitter.
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