Audio I/O (13); Exit Diagnostics (14); Initialize (15); Restoring Factory Settings - Lexicon MPX 110 Service Manual

MPX 110 Service Manual

AUDIO I/O (13)

The Audio I/O Test will set the audio path through the MPX 110 for 100% WET signal without any effects.
By using this test, the technician can eliminate major functional sections of the system when
troubleshooting gain, crosstalk, frequency response, distortion and noise problems in a system.
When selected, the Binary LED's will read the following:
Edit Bypass
O O
MSB
Pressing the STORE button will execute the test.
When the test is executed the L & R Level (green) LED's are lit, and the test number is displayed on the
Binary LED's. The remaining buttons, encoders, ADC Pots and footswitches (2) are inactive.
Note: The Audio I/O mode sets the MIDI Out/Thru system parameter to MIDI Thru mode.

EXIT DIAGNOSTICS (14)

This selection will allow the user to exit the Extended Diagnostic Mode into normal operating mode. When
selected, the Binary LED's will read the following:
Edit Bypass
O O
MSB
Pressing the STORE button will execute the test.
When the selection is executed the remaining buttons, encoders, ADC Pots and footswitches (2) are
inactive, and the MPX 110 will exit Extended Diagnostic Mode and enter normal operating mode.

INITIALIZE (15)

This selection will initialize all of the MPX 110 system parameters to their factory default settings.
When selected, the Binary LED's will read the following:
Edit Bypass
O O
MSB
Pressing the STORE button will execute the test.
When this selection is executed the remaining buttons, encoders, ADC Pots and footswitches (2) are
inactive. The MPX 110 will be reset, perform the power on diagnostic sequence, and enter normal operating
mode.

Restoring Factory Settings

CAUTION, this Procedure will destroy any user settings or registers.
1. Power up the MPX 110, then press and hold the Bypass.
2. Turn VARIATION to 15.
3. Press Store.
4. The MPX 110 will clear the registers then cycle through a normal power up and return to normal
running mode
5-16
Store Tap
l
O
LSB
Store Tap
l
O
LSB
Store Tap
O l
LSB