7
Appendix
DEFEATING THE PRIORITY MUTE IN THE UA2050
The UA2050 has a priority mute feature that automatically turns off Input 2 if there is a signal on Input 1. This is provided so that
paging or emergency announcements can override background music (or other source) connected to Input 2. If this feature is not
desired, it can be defeated by cutting an internal jumper on the main PCB.
Disconnect from mains before proceeding!
Remove the cover and locate the jumper. It is clearly labeled and resides behind the high frequency EQ control (see below).
Observe caution when cutting so that no other components are damaged. Replace the cover. With this modification both
channels will function without priority muting.
1.
This procedure should be conducted by a skilled individual, extra precautions should be taken.
2.
“Dangerous voltage” within the product may be of sufficient magnitude and constitute a risk of electric shock.
3.
To prevent electric shock or fire hazard, please pull out the power plug and turn off the power before opening the cover.
