Lightspeed CAT 805iX User manual

Troubleshooting Guide
Symptom Problem Isolation Steps Resolution
No sound from
speaker
Verify power on the 805iX preamp is on
and LED on the power button is
glowing blue.
If not lit, verify all connections are snug from the
AC connection to the power supply, and from the
power supply to the preamp. If all connections are
secure, determine if the outlet is working or test
with a known working power supply.
Verify power LED in middle of Light-
speed Logo is glowing blue in
center of ISR module.
If not lit, check that Cat 5 cable is properly
connected to both ISR and 805iX preamp.
Check if the “Sensor Short” LED on the
rear of the amplifier is illumi-
nated.
If the "Sensor Short" is illuminated, check cable
for a short and replace if necessary. If that does
not correct the problem, try replacing 805iX pre-
amp or ISR.
Check volume on 805iX preamp and
amplifier.
Ensure 805iX controls are turned up to approxi-
mately 9 o’clock position on both A and B mic
volumes. Slowly turn up amplifier volume.
Check volume level adjustment on back
of wireless microphone.
If using an microphone with volume control, vol-
ume level may need to be increased.
Verify the channel A or B LED’s light on
ISR sensor with wireless micro-
phone on.
If the LED’s do not light, try using a known good
mic. If problem persists, troubleshoot ISR module.
NOTE: Verify that the frequency of the micro-
phone matches the frequency group of the 805iX.
G1=white/silver in color mic or marked with “G1”.
G2=black in color mic and/or marked with”G2”.
Verify the red channel A or B LED's on
the 805iX preamp modulate with
voice.
These lights should modulate indicating an audio
signal is reaching the preamp. If these do not
blink, try with a known good microphone.
Check the audio cable connections
between the 805iX and the am-
plifier.
There should be a cable running from the audio
output on the 805iX to an audio input on the
amplifier.
Check the amplifier to ensure it is pow-
ered on and the right source is
selected.
If the amplifier being used does not mix the audio
together, it may be necessary to select the proper
input source that the 805iX is plugged into to hear
the microphone audio.
Verify speakers are connected to ampli-
fier and operating properly.
Verify that sound from other input sources are be-
ing played through the speakers. If not, amplifier
may be defective.
Static is heard
from speaker
Check that the battery(ies) being used
in the microphones is charged
and is the proper type.
Install the proper NiMH battery(ies) that is fully
charged.
Check if two microphones are being
used that they are on different
channels
If needed, change one microphone to the oppo-
site channel.
CAT 805iX

Sympton Problem Isolation Steps Resolution
Check ISR sensor placement. Evaluate the ISR sensor location in the room and
adjust as needed. It should be located near the
center of the room on the ceiling, or centered
along a long wall. Avoid placing it near obstruc-
tions such as beams, ceiling mounted equipment,
suspended lighting, etc.
Check that the ISR sensor is located
away from possible sources of IR
interference.
Direct sunlight and Plasma monitors can adversely
affect performance.
Feedback Verify that volume on amplifier is not
set too high.
Reduce volume as needed until feedback issue is
resolved. Remember the teacher should barely be
able to hear his/her own voice at optimum volume
levels.
Check that the microphone is being
worn properly.
The top of the microphone should be worn at the
level of the collar bone. Adjust the lanyard accord-
ingly.
Check EQ settings on amplifier (if avail-
able)
If feedback persists at proper volume levels, adjust
any EQ setting in the 1K - 4K frequency range
down until feedback ceases.
Verify proper speaker installation as per
Lightspeed installation guide.
If needed, relocate the speaker to eliminate the
feedback. Wall speakers should be at least 7 feet
high and ceiling speakers should not be used in
rooms with ceilings lower than 9 feet.
Verify that the original microphone
works in another room.
If the problem persists in the other room, the mi-
crophone is the likely cause of the problem.
Low volume Check that the volume level on the
805iX preamp or amplifier is not
set too low.
Set the volume indicator at the 8 to 9 o’clock posi-
tion and then adjust as needed for normal opera-
tion.
Check that microphone is being worn
properly.
The microphone should be worn at the level of the
collarbone.
Test a known good microphone
on the same channel with the
system.
If the volume level remains the same as the
original microphone, the most likely cause of the
problem is the amplifier or speakers.
Check volume level adjustment on back
of wireless microphone.
If using a microphone with volume control, volume
level may need to be increased.
Drop-out /
intermittent
operation
Check if two microphones are being
used that they are on different
channels.
If needed, change one microphone to the oppo-
site channel.
Check that there is no obstruction
between the ISR sensor and the
microphone.
Make sure the microphone is not blocked by
clothing or turned to face the user.
Check ISR sensor placement. Evaluate the ISR sensor location in the room and
adjust as needed. It should be located near the
center of the room on the ceiling, or centered
along a long wall. Avoid placing it near obstruc-
tions such as beams, ceiling mounted equipment,
suspended lighting, etc.

Sympton Problem Isolation Steps Resolution
Check that the ISR sensor is located
away from possible sources of IR
interference.
Direct sunlight and Plasma monitors can adversely
affect performance.
Check that a known good microphone
works with the system being
tested.
If the intermittent operation stops, the original
microphone is likely the cause of the problem. If
the problem continues, the ISR sensor may be the
cause of the problem.
Check proper connection of Cat 5 sen-
sor cable.
Make sure the Cat 5 connector is fully inserted and
locked into 805 preamp and ISR.
Verify proper wiring of Cat 5 sensor
cable.
If Cat 5 cable has been reterminated, or if a differ-
ent type third-party cable has been used, the new
connector may be mis-wired. Replace with known
good cable to verify.
REDMIKE/RED-
MIKE Volume
Control (RMT/
RMV) will not
power on
Check that the correct battery is being
used.
Use the Lightspeed NH2A27 NiMH rechargeable
sensing battery as it is the only kind of battery that
will properly charge with the RMT/RMV.
Check that the battery is installed prop-
erly.
Ensure that the polarity is observed.
Check that the battery is charged. Substitute a known good battery and see if it
charges in the microphone. If it does charge,
replace worn or defective battery. Typical battery
life is 1-2 years.
Check that battery contacts are not
obstructed.
Ensure that there is no object preventing good
contact between the battery and contacts.
RMT/RMV
won't charge
Verify that the correct battery is being
used.
Use the Lightspeed NH2A27 NiMH rechargeable
sensing battery as it is the only kind of battery that
will properly charge with the RMT/RMV.
Check that the RMT/RMV charging
circuitry is working properly.
Substitute a known good battery and see if it
charges in the microphone. If it does charge,
replace worn or defective battery. Typical battery
life is 1-2 years.
Verify that the RMT/RMV is being
seated properly in the cradle
charger.
When the RMT/RMV is properly inserted in the
cradle, the LED on the charger should turn solid
red.
Verify that the cradle charger is working
properly.
The LED on the cradle charger should turn solid
red when the microphone is inserted. If no LED's
light, try using a known good cradle charger. (If
there is a blinking red LED, that indicates a charg-
ing error most likely related to improper battery
type.)
Verifiy that the cradle charger power
supply is not damaged or defec-
tive.
Try known good charger power supply.

Sympton Problem Isolation Steps Resolution
REDMIKE
Share (RMS)
will not power
on
Check that the correct battery pack is
being used.
Use the Lightspeed NH2APK NiMH rechargeable
sensing battery pack as it is the only kind of bat-
tery pack that will properly charge with the RMS.
Check that the battery pack is installed
properly.
Ensure that the polarity is observed.
Check that the battery pack is charged. Substitute a known good battery pack and see
if it charges in the microphone. If it does charge,
replace worn or defective battery pack. Typical
battery life is 1-2 years.
Check that battery contacts are not
obstructed .
Ensure that there is no object preventing good
contact between the battery pack and contacts.
RMS won't
charge
Verify that the correct battery pack is
being used.
Use the Lightspeed NH2APK NiMH rechargeable
sensing battery pack as it is the only kind of bat-
tery pack that will properly charge with the RMS.
Check that the RMS charging circuitry is
working properly.
Substitute a known good battery pack and see
if it charges in the microphone. If it does charge,
replace worn or defective battery pack. Typical
battery life is 1-2 years.
Verify that the RMS is connected to the
charging cable and the charging
output on the REDMIKE cradle
charger.
When the RMS is connected to the charger, the
LED on the microphone should turn solid red.
Verify that the charge cable is con-
nected properly.
The charger connection is loated on the bottom of
the microphone.
LT71 will not
power on
Check that the correct batteries are be-
ing used.
The LT71 uses two AA NiMH batteries for proper
operation and charging. The Lightspeed NH1 is
recommended for optimum use.
Check that the batteries are installed
properly.
Ensure that the polarity is observed.
Check that the batteries are charged. Substitute known good batteries and see if they
charge in the microphone. If they do charge,
replace worn or defective batteries. Typical battery
life is 1-2 years.
Check that battery contacts are not
obstructed.
Ensure that there is no object preventing good
contact between the batteries and contacts.
LT71 won't
charge
Verify that the correct batteries are be-
ing used.
The LT71 uses two AA NiMH batteries for proper
operation and charging. The Lightspeed NH1 is
recommended for optimum use.
Check that the LT71 charging circuitry is
working properly.
Substitute known good batteries and see if they
charge in the microphone. If they do charge,
replace worn or defective batteries. Typical battery
life is 1-2 years.
Verify that the LT71 is connected to the
charging cable and the charging
output on the REDMIKE cradle
charger.
When the LT71 is connected to the charger, the
LED on the microphone should turn solid red.