Grass Valley NV7512 v.1.3 - Manual (Page 113)

NV7512 Audio Router • User’s Guide 103
6. Maintenance
Troubleshooting
Active Cards and Power Supply Modules
All front-loaded active cards and the power supply modules (PS6000) may be removed or installed
with the power on (“hot swapped”). Prior to installing a replacement card, verify that user settings
are configured correctly. Cards that receive and process serial data from the control card will auto-
matically configure themselves at power up. If a card appears to be defective, first try re-seating it
in the frame.
Backplanes
All backplanes are passive and may be removed at any time. Use the same cautions as exercised
with front-loaded modules. Be sure to match backplanes to the corresponding front active cards.
However, no damage will normally occur from an unintentional mismatch.
Troubleshooting
Many system troubles are caused by easily-corrected errors, such as poor quality or missing input
or reference signals, incorrect configuration, and so on. This section lists common problems and
their solutions in the most likely order of occurrence. Refer also to the
Introduction on page 1 for an
overview of the system and its major components. Try troubleshooting the system yourself, and if
you are not successful, call
NVISION Technical Support as explained near the front of this manual.
In the event that a problem is caused by a bad circuit board, swapping the bad board with a replace-
ment circuit board is the quickest solution. If you need to order replacement boards or other compo-
nents, see
Technical Support Contact Information on page iii.
Symptom Possible Causes and Solutions
System not powering up. Verify that the power cord(s) are plugged into the frame and the AC power
source. Use a voltmeter to verify the presence of power.
Check the AC line fuse on the power supply module. See
Fuse
Replacement on page 100.
One or a few PS6000 power
supply modules not powering
up or not operating properly.
Check that the PS6000 is fully seated in the frame.
Reset the PS6000 by reseating it in the frame.
Check that all five green LEDs on the front of the power supply modules
are lit. If an LED is not lit, it indicates a branch circuit may be faulty, which
could affect only certain modules in the frame. Replace the power supply.
Check PS6000 fuses. See
Fuse Replacement on page 100.