Operation Manual

EF1210 U
SER
M
ANUAL
42 http://www.aspi.com Copyright © 1999, All Rights Reserved
T
ROUBLESHOOTING
N
O
O
UTPUT TO
L
OUDSPEAKERS IN
Z
ONE
You can’t hear the
remote end.
Check the R
EMOTE
L
EVEL
I
NDICATOR
of the zone (use the R
EF
S
ELECT
button to
switch between Reference A and Reference B. If the LED graph meter shows activ-
ity, the EF1210 is receiving a signal. In this case, the problem is between the EF1210
and the loudspeaker.
If there is no activity on the R
EMOTE
L
EVEL
I
NDICATOR
, the EF1210 is not receiving
a signal. In this case, the problem is between the EF1210 and the microphone(s) on
the remote end.
Check the CODEC (or EF200) output by connecting it directly to the amplifier or
powered speaker. If you hear nothing, the EF1210 is not causing the problem and the
source of the problem is elsewhere in the system.
Make sure the CODEC or EF200 is connected to the appropriate reference input
(AEC A or AEC B) from the appropriate zone.
Make sure the CODEC or EF200 is turned on.
Make sure everything on the remote end is working properly.
Make sure the cables are not broken. Check the cable pinouts.
If you see signal activity on the R
EMOTE
signal meter, make sure the appropriate zone
output (Z
ONE
A or Z
ONE
B) is connected to the amplifier or powered loudspeaker
input.
Make sure the amplifier or powered loudspeaker is on and that the volume is at an
appropriate level. If the zone output level needs adjusting, choose the appropriate
zone by pressing the R
EF
S
ELECT
button on the front panel. The yellow AEC A or
AEC B LEDs indicate not only the reference input but also the corresponding zone
output.
N
O
O
UTPUT TO
R
EMOTE
E
ND
Remote end can’t
hear you.
Check each microphone’s level on the I
NPUT
L
EVEL
I
NDICATOR
to make sure there is
activity when you speak into the microphone. You can display each microphone’s
input level by using the I
NPUT
S
ELECT
button to cycle through each microphone. If
the I
NPUT
L
EVEL
I
NDICATOR
shows activity when you speak into the microphone, the
EF1210 is receiving the microphone signal. This means the remote end is not receiv-
ing a signal from the EF1210.
Caution!
When adjusting amplifier or powered loudspeaker levels, be
careful not to exceed the maximum amplification level that
you took note of in the Zone Output calibration (see “Check
Acoustic Gain” on page 31).