Service – Grass Valley 8912RDA User Manual
Page 15
8912RDA/RDA-D Instruction Manual
15
Service
Service
The 8912RDA 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 ser-
viced 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 Channel Lock LEDs.
•
Verify power at the voltage testpoint (see
if no voltage is detected.
•
Check for presence and quality of input signals.
•
Verify that source equipment is operating correctly.
•
Check cable connections.
•
Check output connections for correct I/O mapping (correct input con-
nector is used for the corresponding channel output).
Refer to
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 6. Fuse and Voltage Testpoint Locations
8157_05
FAULT (red)
COMM (yellow)
PWR (green)
+5 V testpoint
Channel 1 lock (green)
Channel 2 lock (green)
1/2 amp
125 V fuse
F2