Cobalt Digital COMPASS 9301 AES Audio Delay - Manual (Page 56)

3
Troubleshooting
3-26 9301 PRODUCT MANUAL 9301-OM (V4.2)
Basic Troubleshooting Checks
Failures of a general nature (affecting many cards and/or functions
simultaneously), or gross inoperability errors are best addressed first by
performing basic checks before proceeding further. Table 3-2 provides basic
system checks that typically locate the source of most general problems. If
required and applicable, perform further troubleshooting in accordance with
the other troubleshooting tables in this section.
Table 3-2 Basic Troubleshooting Checks
Item Checks
Verify power presence and
characteristics • On both the frame Network Controller Card and the 9301, in all cases when
power is being properly supplied there is always at least one indicator
illuminated. Any card showing no illuminated indicators should be cause for
concern.
• Check the Power Consumed indications for both the +12 V and -7.5 V
supply rails for the 9301 card. This can be observed using the DashBoard™
Card Info pane, or using the card edge controls and indicators as shown in
Figure 3-4 on page 3-7.
• If either of the rail supplies show no power being consumed, either the
frame power supply, connections, or the 9301 card itself is defective.
• If either of the rail supplies show excessive power being consumed
(see Technical Specifications (p. 1-16) in Chapter 1, “Introduction”), the
9301 card may be defective.
Check Cable connection
secureness and connecting
points Make certain all cable connections are fully secure (including coaxial cable
attachment to cable ferrules on BNC connectors). Also, make certain all
connecting points are as intended. Make certain the selected connecting
points correlate to the intended card inputs and/or outputs. Cabling mistakes
are especially easy to make when working with large I/O modules.
Card seating within slots Make certain all cards are properly seated within its frame slot. (It is best to
assure proper seating by ejecting the card and reseating it again.)
Check status indicators and
displays On both DashBoard™ and the 9301 card edge indicators, red indications
signify an error condition. If a status indicator signifies an error, proceed to the
following tables in this section for further action.
Troubleshoot by
substitution All cards within the frame can be hot-swapped, replacing a suspect card or
module with a known-good item.