Extron Electronics MPA 152 Plus User Guide - Manual (Page 19)

Stereo to Dual Mono
Toggle Switch Level Potentiometer
Resistor R42
Figure 10. Front View, Showing the Location of Resistor R42
4. Identify resistor R42 at the front of the bottom circuit board between the Stereo to Dual
Mono toggle switch (to the left) and the Level potentiometer (to the right). The resistor is
shown in the white box in figure 10.
5. Remove the resistor using a pair of diagonal cutters to clip the wires attaching it to the
circuit board.
6. Re‑attach the top enclosure with the four screws removed in step 1.
Troubleshooting
Under different circumstances, the front panel LED lights green or amber to provide
diagnostic information.
Amplifier Fails to Exit Standby Mode Promptly
Power LED
Color Problem Description Problem Solution
Amber No output signal. No input detected: verify that there is an
input signal.
If a signal is present, raise the level of the
source signal.
Green No output signal. The amplifier may be in mute mode. Check
the Remote port.
Green or
Amber Slow to exit standby mode
when a signal is present. The input signal may be too weak. Raise the
level of the source signal.
Amplifier Enters Standby Mode Too Early
Power LED
Color Problem Description Problem Solution
Green or
Amber Enters standby mode
early. The input signal may be too weak. Raise the
level of the source signal.
MPA 152 Plus • Setup and Operation 13