Grass Valley 8916 - Manual (Page 21)

8916 Instruction Manual 15
Service
Service
The 8916 module makes 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.
If your module is not operating correctly, proceed as follows:
■ Check frame and module power and signal present LEDs.
■ 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 Figure 4 for the location of PWR LED and Table 2 on page 6 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 Tektronix repair depot.
Call your Tektronix representative for depot location.
Refer to the Contacting Grass Valley Group at the front of this document for
the Tektronix Customer Service Information number.