Service – Grass Valley 8910ADA-M User Manual
Page 46
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8910ADA-M/ST/SR — Instruction Manual
Service
Service
The 8910ADA 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 except to change fuses unless directed otherwise by Cus-
tomer 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
check Fuses F1 and F2 if no voltage is detected.
•
Check for presence and quality of input signals.
•
Verify that source equipment is operating correctly.
•
Check cable connections, especially when using the hard-wired cus-
tomer-supplied potentiometers for the 8910ADA-SR.
•
Check output connections for correct I/O mapping (correct input con-
nector is used for the corresponding channel output).
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
Contacting Grass Valley on page 4
at the front of this document
for the Grass Valley Customer Service contact number in your region.