Troubleshooting
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Delta Series Audio Controllers

Troubleshooting

Overview
If you are reading this section, it’s likely that something has gone wrong. You have installed the Delta
system and tried to program but something just doesn’t seem to be working right, or it’s not working at
all. Try working your way through this troubleshooting section to help isolate the problem.
Before Delta units leave the factory they are “burned in” and extensively tested to ensure proper
operation. They should be in working condition when they arrive on site. Test all zones to collect enough
information to localize your problem. Make note of similarities in issues across multiple zones. For
instance, if you can power on each zone except #1, then you have a localized problem.
However, if the CD player doesn’t work in any zone, then the issue is likely at the source component
connections or with programming.
Troubleshooting is just a series of eliminating possibilities. If you discover that a problem exists, try
eliminating the possibilities associated with it beginning with the most obvious like the power and audio
connections. Then, individual connections (usually within the zone(s)) will be next.

Power Connections

Tracking down problems that are power related are somewhat easy because the unit either powers up or
it doesn’t. If it does not, there are several things to check.
1. Check to make sure you are attached to a functioning live electrical circuit. If the branch circuit is
dead check the breaker or there may be a light switch controlling the power to the outlet. If it’s on a
switched circuit try to obtain power elsewhere.
2. Ensure that both ends of each power cord are firmly seated in all of the source components.
3. If you’re plugged into power strips, check them for operation as well. Be aware these often have
mini-breakers on them and you should check to ensure that power is functioning in EACH outlet.
It is not uncommon for the inexpensive power strips to fail at one plug-in but not the others.
4. There is a power switch located at the rear of the Delta Controller, check to see that it is in the ON or
(1) position.
5. There is a fuse beside the power switch at the back of the Delta Controller. Remove the fuse and
inspect it to see that it is intact. If you have an ohm meter, test for continuity across the fuse
(sometimes they look good, but they’re really broken near one of the ends). The fuse in the rear of
the unit is a 5A 250V Slo Blo.

Source Unit Connections

Problems in source cabling can often be traced to symptoms where the source cannot be heard in any
zone and/or when the source doesn’t seem to respond to keypad commands.
1. Ensure that the source component’s LINE OUT connections are connected to the Delta Controller’s
LINE IN connections for the correct device. These can sometimes be mismatched.
2. Take a look at the source component to ensure that MUTE functions have not accidentally been
activated.
3. Check to see that the IR emitter lead is securely fastened to the IR receiver on the source component
and that you have the lead plugged into the appropriate IR output jack. These can sometimes be
mismatched. When a keypad command is received and communicated to the source device, there is
a LED that lights on the front of the Delta Controller indicating the processing of the command. If