Grass Valley NV7512 v.1.3 - Manual (Page 114)

104 Rev 1.3 • 10 Oct 08
6. Maintenance
Obtaining Service
Obtaining Service
For service advice, warranty exchange, warranty repair, or out-of-warranty repair:
10 Call NVISION Customer Support at the telephone number in the front of this manual under the
heading Technical Support Contact Information on page iii. Our Customer Service Personnel
will help you resolve any service issues.
11 If you need an exchange or repair, NVISION will assign you a Return Material Authorization
(RMA) number. Do not return equipment without first receiving an RMA#. NVISION uses
the RMA to track receipt of the equipment and to record repair or replacement information.
For out-of-warranty equipment, the NVISION Technical Support Engineer estimates the cost of
repair when you call and requests a purchase order payable to NVISION .
If repair or exchange is required, package the assembly in an antistatic bag and place it in a
shipping box with plenty of padding to prevent damage.
12 Address the package using the Shipping Address listed in the front of this manual under the
heading Technical Support Contact Information on page iii, and ship the equipment to NVI-
SION at your company’s expense.
13 When repair or replacement of in-warranty equipment is complete, NVISION return ships the
items at our expense. For out-of-warranty equipment NVISION charges a shipping and han-
dling fee. The standard shipping method is Second Day.
For out-of-warranty service, NVISION will send your company an invoice following the repair
or replacement.
Intermittent signal on one or
two outputs.
Check input and output cable continuity
Check AES Reference
Check Video Reference
Check cable terminations
Possible bad card. Swap each card in the signal path with another card to
see if the problem moves with the card. If so, replace the card.
If all cables, terminations, and cards check out OK, call Technical Support.
(See
Technical Support Contact Information on page iii.)
Intermittent or missing signals
on all outputs. Problems with the AES reference inputs could cause all inputs to operate
intermittently or not at all. Check the quality of the reference signals and
their cable connections.
Check the control card, which processes the references to produce sync. A
synchronous system requires an operational control card in order to pass
signals. An asynchronous system will operate in its last state even if the
control card is removed. Change over to the reserve control card to see if
the problem goes away.
Possible low voltage on power supply module. Check power test points on
power supply. Voltages at power supply test points may be slightly high in
lightly loaded systems. Replace the power supply if any test points indicate
low voltage.
Symptom Possible Causes and Solutions