Lexicon LXP-15 II, Owner'S Manual

Page: 90 / 98

8-1
Troubleshooting
8
Troubleshooting
This chapter is intended primarily to help you to recognize some common error
states which can be corrected from the LXP-15 II front panel controls, or by
simple means such as cable replacement. Any error states which are not
covered here should be referred to Lexicon Customer Service.
In a low voltage, or "brown-out" condition, the LXP-15 II will freeze in its current
state. None of the controls will have any effect. When power returns to a normal
level the unit will reset itself as though it had just been powered on. After the
initial power up display message, the unit will return itself to the state it was in
when the power dropped. If the unit does not reset itself, turn the power OFF,
then ON to resume normal operation.
Temperature extremes may cause the LXP-15 II to exhibit unpredictable
behavior. If the unit has been subjected to temperatures below 32
°
F (0
°
C) or
above 95
°
F (35
°
C), it should be turned off and allowed to return to normal
temperature before use. The unit may be damaged by exposure to temperatures
below -22
°
F (-30
°
C) or above 167
°
F (75
°
C), or by exposure to humidity in
excess of 95%. If a unit exposed to such conditions fails to operate after it returns
to a normal operating temperature, contact Lexicon Customer Service.
No output from the LXP-15 II.
Check to see if Global Patches are set to
Immediate mode. If you don't have a
control source patched to a destination, the controller will go to its minimum
value! If you don't have anything patched to the input and output parameters, this
may result in no output. When you access a preset, all of the parameter values
will immediately jump to whatever value you have selected, destroying the
preset's sound. See page 4-14.
The LXP-15 II doesn't respond to MIDI.
• Check to make sure a MIDI cable is connected to MIDI OUT of the external
device and to MIDI IN on the LXP-15 II.
• Test the MIDI cable.
• Verify that you have the LXP-15 II and the external device communicating on
the same MIDI Channel. See page 6-1.
A MIDI indicator in the upper lefthand corner of the display will flash to indicate
the LXP-15 II is receiving MIDI data on the selected channel.
The LXP-15 II doesn't go to the Program Change number transmitted — it's
off by 1.
Your MIDI device is transmitting Program Changes 0-127. The LXP-15 II
translates 0 to 1, 1 to 2, etc. Subtract 1 from the LXP-15 II program number you
want, and transmit that Program Change number. See page 6-2.
Low Voltage
Overheating
Common MIDI
Problems