Service – Grass Valley 8960DEC User Manual
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8960DEC—Instruction Manual
Service
Service
The 8960DEC 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 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.
•
Check output connections for correct I/O mapping (correct input con-
nector is used for the corresponding channel output).
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 8960DEC at the front of this document for the Grass Valley Cus-
tomer Service Information number.
Figure 21. Fuse and Voltage Testpoint Locations
JP13
pin 1, +5 V
pin 3, -5 V
JP1
JP13
Voltage Testpoints
Fuse: 2 A FAST
125 V
F1
Ground Testpoint