Grass Valley 8920DMX - Manual (Page 25)

8920DMX Instruction Manual 25
Service
Service
The 8920DMX 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 by Customer Service.
If your module is not operating correctly, proceed as follows:
• Check frame and module power and signal present LEDs. If module
power is not present, check fuse F1 (see
Figure 10 ).
• 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).
• If the red FAULT LED is on, reseat module to reset. If FAULT does not
go out, module has internal problem and will need to be replaced.
Refer to Figure 4 for the location of PWR LED and Table 2 on page 11 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 Contacting Grass Valley at the front of this document for the
Grass Valley Customer Support Information number.
Figure 10. 8920DMX Module Fuse Location
8038_07
JP10
JP12
JP13
JP14
JP15
Fuse: 2 A FAST, 125 V
F1