Troubleshooting
Symptom
no signal output.
Main power switch is on,
but no LED's are illumi-
nated.
no signal output.
Main power switch is on
and some LED's are il-
luminated.
Output signal is distorted.
Outputs are connected
for balanced operation.
Output signal is distorted.
Outputs are connected
for unbalanced operation.
Hum can be heard in the
audio program.
Channel 1 signal can be
heard in Channel 2 output
and vice versa.
channel 2 seems to have
no output when used
with Channel 1 as a ste-
reo pair
In MS mode the stereo
channels are reversed
(Channel 1 is Right and
Channel 2 is Left)
In MS mode the stereo
channel phasing is incor-
rect
4
analog
P2
Solution
•
Check AC power source and cord.
•
Check fuses (pull fuse drawer under power cord inlet)
•
Check status of phantom power.
•
Check continuity of mic and electric instrument cables.
•
Check continuity of output cables.
•
Make sure gain is adjusted so that the OL indicator does not acti-
vate during the audio program.
•
Make sure the high output capability of this unit is not overloading
the device or monitoring system to which it is connected.
•
Set GAIN selector to match capability of device or monitoring sys-
tem, then adjust gain control according to indications on the Level
Indicator LED's.
•
Check continuity of output cable.
•
Make sure outputs are not connected to a load impedance of less
than 00 ohms.
•
Make sure the minus () output signal pins are connected to the
shield and not left unconnected. See "Output Cable Connection"
section.
•
Check troubleshooting tips for balanced operation (above).
•
Disconnect grounding LINK.
•
Check continuity of output cables (particularly shields).
•
Disconnect shields on one end of output cables. Connect grounding
LINK.
•
Check status of MS selector. It should be OFF for individual channel
mode and ON for MidSide mode.
•
Check status of MS selector. It should be OFF for individual channel
mode and ON for Mid/Side mode.
•
Make sure the 180º selectors for both Channels 1 and 2 are OFF.
•
Make sure the front of the bidirectional "Side" mic is aimed 0
degrees to the left of the axis of the "Mid" mic. Alternatively, select
180º on Channel 2 to reverse channel positions.
•
Make sure the 180º selectors for both Channels 1 and 2 are in the
same position.
systems
TRUE