Rane MPE MIDI Programmable Equalizer - Manual (Page 24)

24 Rane MPE Users Guide
Battery Maintenance
The MPE contains a battery to keep the memory
alive during power down. The battery should last
five years, as long as you abide by the following
tips:
Keep your MPE in a cool place. Battery life
takes a dive when it gets hot.
Keep your MPE powered from the power supply
as much as possible. As long as the MPE has
power, it doesn’t use the battery.
The battery should be checked every year or so.
This can be carried out at any Rane warranty station.
If the battery needs replacement, do not attempt to
do it yourself. Take it to the nearest Rane warranty
station, or call the factory for instructions. Failure to
do so may result in loss of all Stored Memory.
Troubleshooting
The MPE really does work, we promise. But that’s
what they all say, right? In this section we provide
some guidelines to aid you in troubleshooting your
system in the case that it does not perform the way
you expect it to.
Obviously, the assumption here is that all your
equipment works. The MPE will not talk to MIDI
equipment that isn’t turned on, doesn’t do what it’s
supposed to, or isn’t connected properly. If your
system doesn’t work, the first thing you should do is
check all your cables and verify that the proper
connections have been made. In 90% of the cases,
this will eradicate your problems. If you’ve checked
your cables, and the system still doesn’t work, read
on.
Problem:
The MPE is powered up, but no lights come on
and it doesn’t respond to key presses.
Troubleshooting:
1. Is the MPE really powered up? Verify that both
ends of the remote supply are plugged in.
2. Does the MPE pass audio? (Try bypass.)
Y—The MPE has power if it passes audio. Discon-
nect MIDI (in case garbage is pouring in and
preventing the MPE from servicing its user
interface) and power it up again.
N—If no audio passes, the MPE does not have
power. Check your connections.
Problem:
The MPE does not pass audio.
Troubleshooting:
1. Is the MPE plugged in? Verify that LEDs are lit,
and that the unit is operating.
2. Are the audio cables connected to the proper
inputs and outputs?
3. Try Bypass. If the MPE does not pass audio in
Bypass, it either has no power or the cables are
improperly connected.
4. Are all the Bands and overall Level set for large
cut? It is conceivable that you could have up to
40 dB of attenuation through the unit if all Bands
and overall Level are set for maximum cut.
Problem:
The MPE does not respond to the keypad.
Troubleshooting:
1. Is the MPE locked out? Check for an error mes-
sage ( L.O.1 or L.O.2) when you press a key. If
you get the error message, then you are locked
out. See the detailed operating instructions to
learn how to remove the MPE from Lockout.
2. Is the MPE receiving Key Scan messages? If so,
it could possibly be timing out a MIDI key press
that wasn’t accompanied by a MIDI key release.
The MPE will time out and return control to the
front panel after ten seconds if no MIDI key
release command is received. To test this for
condition, disconnect the MIDI IN cable, wait for
ten seconds, and then try the keypad again.