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MCU determines that the DC source is within acceptable range.
Pushing the power button will only cause the LED blink cycle to
be repeated.
If the DC power is detected out of range, unplug the AC power
adapter for 30 seconds, then plug it back in to reset the MCU.
If no blink code is shown after 3 seconds, press and release the
POWER button. The STATUS LED will illuminate red and the
three INPUT LEDs will illuminate, indicating that the amplifier is
ready for operation.
Ground Test Delay
The MCU will wait for about 3 seconds and then measure all of
the important internal ground relationships. If these are not
within acceptable range, the MCU will power down the amp
and show a ground failure blink code. If this failure occurs
mulitiple times, please contact Monoprice
™
Technical Support
for assistance.
DC Offset Delay
If the ground connections are acceptable, the MCU will wait
about 15 seconds while the amp finishes powering on. After 15
seconds the MCU will measure the DC offsets at the headphone
outputs. If these are acceptable, it will connect the headphones
