Cobalt Networks 9084 manual Basic Troubleshooting Checks

3	Troubleshooting
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 3-4 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 3-4 Basic Troubleshooting Checks
Item	Checks
Verify power presence and	• On both the frame Network Controller Card and the 9084, in all cases when power is
characteristics	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 9084 card. This can be observed using the DashBoard™ Card Info pane, or
	using the card edge controls and indicators as shown in Figure 3-7on page 3-12.
	• If either of the rail supplies show no power being consumed, either the frame
	power supply, connections, or the 9084 card itself is defective.
	• If either of the rail supplies show excessive power being consumed (see
	Technical Specifications (p. 1-11)in Chapter 1, “Introduction”), the 9084 card
	may be defective.
Check Cable connection	Make certain all cable connections are fully secure (including coaxial cable attachment
secureness and connecting	to cable ferrules on BNC connectors). Also, make certain all connecting points are as
points	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	On both DashBoard™ and the 9084 card edge indicators, red indications signify an
displays	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.

3-38 9084 PRODUCT MANUAL 9084-OM (V4.0)