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Testing & Troubleshooting
Testing
Assignment
Test: Remove all audio sources from Aux inputs. Connect an active audio
source to the lowest priority input for the current amp/channel. Move the
active source through the inputs in the order of priority that was previously
set.
Result: The input source should immediately change as the audio source
is moved between inputs. If the unit delays in switching between aux
inputs then the priority schedule is set differently than expected. Reorder
the priorities using ASSIGNMENT.
Input Activity
Test: Set all audio sources so that they are active. Manually select each
input (see page 9) and check that the source plays through the amp.
Result: This checks that all used inputs are active. If certain inputs do not
play during normal operation, they may not have been assigned to an amp
channel. Reassign the input using ASSIGNMENT.
Amp Links - Internal (PM-3180 Only)
Test: Disconnect external audio processing equipment connections.
Result: No output from amps until external equipment is reconnected.
Preset Parameters
Test: Turn unit off and on. Manually select each input assigned for each
amp and check VOL, BASS and TREB settings by pushing the function but-
tons.
Result: VOL, BASS and TREBLE setting shown in display for the current
amp/channel-input combination should be what was expected. If not, enter
PRESET (see page 28) and correct settings.
Aux Mute
Test: Make one of the Aux inputs active by turning on only its source.
Select an amp and manually select a mic input. Repeat this for all
Aux/Mic/Amp combinations of interest.
Result: The active Aux input will play through the amp at the volume set by
the AUX MUTE function (see page 33). The level balance between the mic
and the muted Aux input can also be checked this way.
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