Service – Grass Valley 8981NR User Manual
Page 35
8981NR Instruction Manual
35
Service
Service
The 8981NR modules make extensive use of surface-mount technology and
programmed parts to achieve compact size and adherence to demanding
technical specifications. Circuit modules should not be serviced in the field
unless directed otherwise by Customer Service.
If your module is not operating correctly, proceed as follows:
•
Check frame and module power and signal present LEDs.
•
Verify power at the voltage testpoints (see
) and check Fuse F1
if no voltage is detected.
•
Check for presence and quality of input signals.
•
Verify that source equipment is operating correctly.
•
Check cable connections.
for the location of PWR LED and
for
proper LED indications.
If the module is still not operating correctly, replace it with a known good
spare and return the faulty module to a designated Grass Valley repair
depot. Call your Grass Valley representative for depot location.
Refer to the
at the front of this document for the
Grass Valley Customer Service Information number.
Figure 15. 8981NR Fuse and Voltage Testpoint Locations
8226_08
Voltage Testpoints
JP6
+5V
-5V
3V
Fuse: 2 A Slow
125 V
F2A 125V
TEST
POINTS
F1