MPX G2 Service Manual
5-6
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When the desired menu is displayed, pressing the >YES button will enter the menu item. To exit the menu
item and return to the Top Level Menu, press the NO< button.
Functional Test Descriptions
To enter the Functional Tests / Extended Diagnostics, power on the unit while pressing down and holding
down the Edit button. When the display reads Lexicon release the edit button. After 5 seconds the display
reads:
Diags: Tests
< Function Tests
Switch Test:
The Switch Test will verify the operation of the ENCODER, Front Panel Buttons, Footswitches *, & Left and
Right Insert Returns Jacks on the back of the MPX G2.
*A Lexicon Dual Momentary Footswitch (Lexicon P/N 750-09277) is connected to the ¼" phone jack on the
rear panel of the MPX G2 labeled "Footswitch". The left footswitch is labeled "RING and right is labeled
"TIP". A ¼” Phone Plug is used for testing the Insert Return Jacks.
Turning the Encoder once CW will select the Switch test. When the test is selected, the display will read the
following:
Diags: Tests
< Switch
When the STORE button is pressed to execute the test, the display will read the following:
Switch Test
Hold < to exit
No Front Panel LEDs are lit.
All Front Panel Buttons, Footswitches, Encoder and Insert Return Jacks are active for testing.
Front Panel Switches:
When any of the 19 front panel switches are pressed, the top half of the display will indicate the name of the
switch and the bottom half of the display will read "Pressed". See example below:
Gain Button
Pressed
When button is released, the bottom half of the display will read "Released". See example below:
Gain Button
Released
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