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32

Problem

No sound.

Noise, crackling, unwanted signals.

Distortion.

Momentary loss of sound ("dropouts") at

some points within performance area.

Error Messages

ERR.>SYS<

ERR.>PRE<

TXBand

ERR.>USR<

ERR.>RF<

Err.>IR<

>-h<

>ChArGE<

(rechargeable battery only)

Possible Cause

1. AC adapter is not connected to receiver

and/or power outlet.

2. Receiver is OFF.
3. Receiver is not connected to mixer or

amplifier.

4. Microphone or instrument is not connected

to bodypack transmitter.

5. Transmitter is tuned to different frequency

than receiver.

6. Transmitter is "OFF" or transmitter MUTE

switch at "MUTE".

7. Transmitter batteries are not inserted 

 properly.

8. Transmitter batteries/battery pack dead.
9. Transmitter is too far away from receiver or

squelch threshold setting is too high.

10.Obstructions between transmitter and

receiver.

11.Receiver is invisible from transmitter  location.
12.Receiver too close to metal objects.

13.Transmitter and receiver Preset versions

are not identical.

1. Antenna location.
2. Interference from other wireless systems,

TV, radio, CB radios, or defective electrical
appliances or installations.

1. GAIN control on transmitter is set too high

or too low.

2. Interference from other wireless systems,

TV, radio, CB radios, or defective electrical
appliances or installations.

Antenna location.

Problem

Frequency settings cannot be changed.

Error in selected Preset.

1. Transmitter frequency band is not identical

with receiver frequency band.

2. RF output too high/low.

Last setting cannot be loaded.

PLL error. (Receiver cannot lock on to
selected frequency.)

Infrared transmisison failed.

1. Transmitter cannot identify battery as dry

or rechargeable type.

2. Transmitter was switched on during charg-

ing.

Battery is not fully charged.

Remedy

1. Connect AC adapter to receiver and/or

power outlet.

2. Push POWER switch to switch receiver ON.
3. Connect receiver output to mixer or ampli-

fier input.

4. Connect microphone or instrument to

audio input on bodypack.

5. Tune transmitter and receiver to the same

frequency.

6. Switch transmitter "ON" or set MUTE

switch to ”ON” position.

7. Insert batteries conforming to "+" and "-"

marks.

8. Replace batteries/charge battery pack.
9. Move closer to receiver or choose lower

squelch threshold setting.

10.Remove obstructions.

11.Avoid spots where you cannot see receiver.
12.Remove offending objects or move receiv-

er away.

13.Check Preset versions on transmitter and

receiver.

1. Relocate receiver or antennas.
2. Switch off interference sources or defective

appliances or tune transmitter and receiver
to a different frequency; have electrical
installation checked.

1. Decrease or increase GAIN setting just

enough to stop the distortion.

2. Switch off interference sources or defective

appliances or tune transmitter and receiver
to a different frequency; have electrical
installation checked.

Relocate receiver or antennas. If dead
spots persist, mark and avoid them.

Remedy

1. Switch power to receiver OFF and back

ON after about 10 seconds.

2. If problem persists, contact your AKG

Service Center.

1. Continue with previous Preset.
2. Select error-free Preset.
3. If problem occurs frequently, contact your

AKG Service Center.

1. Use transmitter with the same frequency

band as the receiver.

2. Use transmitter with lower/higher Rf out-

put.

1. Set frequency and squelch threshold again.
2. If problem occurs frequently, contact your

AKG Service Center.

1. Set different frequency.
2. If problem persists, contact your AKG

Service Center.

Point transmitter infrared sensor directly at
receiver infrared emitter from a distance of
approx. 2 inches (5 cm).

1. Remove battery and reinsert after approx.

five seconds.

2. Remove transmitter from charger, switch off,

and restart charging (cf. CU 400 manual)

1. Charge transmitter using CU 400 charger.
2. Replace transmitter battery with new dry or

fully charged rechargeable battery.

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AKG WMS 450 V 1.10

6 Troubleshooting

Summary of Contents for HT 450

Page 1: ...g the equipment MODE D EMPLOI V 1 10 p 34 Veuillez lire cette notice avant d utiliser le système ISTRUZIONI PER L USO V 1 10 p 50 Prima di utilizzare l apparecchio leggere il manuale MODO DE EMPLEO V 1 10 p 66 Sirvase leer el manual antes de utilizar el equipo INSTRUÇÕES DE USO V 1 10 p 82 Favor leia este manual antes de usar o equipamento ...

Page 2: ...ii AKG WMS 450 V 1 10 WMS 450 SR 450 11 a Fig 1 Fig 2 13 11 11 10 14 12 15 Fig 8 Fig 9 ...

Page 3: ...iii AKG WMS 450 V 1 10 2 3 WMS 450 PT 450 Fig 4 Fig 12 Fig 5 PT 450 30 29 29 25 27 22 20 31 26 19 17 18 1a 1b 1c 1a 4 3 2 5 6 7 1b 28 ...

Page 4: ...iv AKG WMS 450 V 1 10 WMS 450 HT 450 Fig 3 Fig 5 HT 450 1 2 3 4 5 6 1a 1b 1c 2 3 16 17 18 20 24 19 23 22 21 ...

Page 5: ...v AKG WMS 450 V 1 10 A Fig 7 B C Fig 6 A C B D D ...

Page 6: ...vi AKG WMS 450 V 1 10 Fig 13 Fig 16 Fig 15 Fig 14 Fig 10 Fig 11 1a 1b Fig 17 1a 1b 10cm 10cm ...

Page 7: ...vii AKG WMS 450 V 1 10 ...

Page 8: ...hannel Systems Auto Channel Setup 27 4 Operating Notes 28 4 1 SR 450 Receiver 28 4 1 1 Selecting Modes 28 4 1 2 Selecting Screens 28 4 1 3 Extra Functions 29 4 2 HT 450 Handheld Transmitter 30 4 2 1 Muting the Microphone 30 4 2 2 Microphone Technique 30 4 2 3 PB 1000 and PPC 1000 HT 450 C 30 4 3 PT 450 Bodypack Transmitter 31 4 3 1 Muting the Microphone 31 4 3 2 Locking the ON MUTE PRG OFF Switch ...

Page 9: ... ducts be sure to use separate ducts for the audio lines 10 Clean the equipment with a moistened not wet cloth only Be sure to disconnect the power supply from the power outlet before cleaning the equipment Never use caustic or scouring cleaners or clean ing agents containing alcohol or solvents since these may damage the enamel and plastic parts 11 Use the equipment for the applications described...

Page 10: ... foil off at any time 1 POWER Switches power to the unit on or off 2 LCD display The receiver provides a backlit LCD display The display indicates all receiver parameters a RF bargraph indicating the field strength of the received signal b Alphanumeric display of the current setting c Preset Receiver Name Frequency Group Subchannel shown in Preset and NAME screens only d Audio bargraph indicating ...

Page 11: ...hen you mute the audio signal Sliding the switch from OFF to MUTE PRG places the transmitter in programming mode The status LED 20 will extinguish To switch the audio signal back on slide the switch to ON The status LED 20 will change to green OFF Power to the transmitter is off The status LED 20 is dark 20 Status LED This bicolor LED indicates the following conditions Green The battery will last ...

Page 12: ...5 from the rubber feet 1 2 Unscrew the two fixing screws 2 from the right hand side panel of one receiver and from the left hand side panel of the other receiver 3 Remove the plastic covers 3 from the side panels with the fixing screws 2 still on 4 Insert one connecting strip 4 into each free slot in the side panel of the first receiver making sure to align the hole in each connecting strip 4 with...

Page 13: ...er is electronically locked so you cannot make any adjustments You may however call up the various status screens one after the other The LOCK label is shown on the display Frequency Carrier frequency in MHz Name Current receiver name comes up only if you have previously named the receiver Preset Carrier frequency shown as Subchannel number within a Frequency Group In SETUP mode the electronic loc...

Page 14: ...SAVE Y save your setting SAVE N reject your setting Clean frequencies are frequencies where the receiver finds no RF signal or an RF signal whose level is lower than the current threshold setting Use and to select the desired Preset Use and to select the desired Frequency Group Use and to select the desired fre quency as a Subchannel of the selected Frequency Group SAVE Y save your setting SAVE N ...

Page 15: ...20 will extinguish 3 Set the ON MUTE PRG OFF switch 19 to MUTE PRG The display will alternately indicate the currently selected frequency and Prg IR The status LED 20 remains dark 4 Refer to Diagram 6 5 Point the infrared sensor 1 on the transmitter at the infrared emitter 2 on the receiver from a distance of 4 inches 10 cm max IR OK The transmitter has been tuned to the same frequency as the rece...

Page 16: ...eceiver referring to section 3 10 1 below 2 Move the transmitter around the area where you will use the system to check the area for dead spots i e places where the field strength seems to drop and reception deteriorates If you find any dead spots try to eliminate them by repositioning the receiver or the antennas If this does not help avoid the dead spots 3 If the received signal is noisy set the...

Page 17: ... easily we recommend using Auto Preset to select all required carrier frequencies from the same Frequency Group within the same Preset If reception on the selected carrier frequency is poor use Auto Channel Setup refer to section 3 9 2 to find the next clean Subchannel within the selected Frequency Group Should you find no clean Subchannel use Auto Group Setup to select a different Frequency Group...

Page 18: ...ed to channel 1 and leave power to the transmitter ON 8 Repeat steps 1 through 7 above for all other channels of your system Be sure to set each channel to the same preset country as channel 1 To toggle between LOCK and SETUP modes press and hold the key for about 1 5 seconds When the receiver is in LOCK mode the LOCK label is shown on the display In SETUP mode the LOCK label is not shown Use and ...

Page 19: ...s mitter will be dead in about 60 minutes The related message on the display is LOW BAT AF The received audio signal drives the receiver into clipping The related message on the display is AFCLIP RF The field strength of the received RF signal is so low that the receiver audio output is muted to pre vent unwanted noise The related mes sage on the display is RF LOW SAVE Y save your setting SAVE N r...

Page 20: ...se this effect to make your voice sound aggressive neutral insinuating etc simply by chang ing your working distance Proximity effect is a more or less dramatic boost of low frequencies that occurs when you sing into the microphone from less than 2 inches It gives more body to your voice and an intimate bass heavy sound Sing to one side of the microphone or above and across the microphone s top Th...

Page 21: ...om green to red The infrared receiver section is OFF Since the RF section continues transmitting the carrier frequency no unwanted noises will become audible form the sound system The display alternates between the currently selected Preset and the remaining battery capacity in hours 2 To switch the microphone back on set the ON MUTE PRG OFF switch 19 to ON The status LED 20 will change to green T...

Page 22: ... mixer or ampli fier input 4 Connect microphone or instrument to audio input on bodypack 5 Tune transmitter and receiver to the same frequency 6 Switch transmitter ON or set MUTE switch to ON position 7 Insert batteries conforming to and marks 8 Replace batteries charge battery pack 9 Move closer to receiver or choose lower squelch threshold setting 10 Remove obstructions 11 Avoid spots where you ...

Page 23: ...mW max ERP Battery life 1 5 V AA size dry battery 6 hours 1 2 V NiMH 2100 mAh AA size rechargeable battery 8 hrs Size 229 x 52 5 mm max dia 9 x 2 in Net Weight 220 g 7 8 oz PT 450 Carrier frequency ranges 650 680 680 710 720 750 760 790 790 820 835 to 862 and 863 to 865 MHz Modulation FM Audio bandwidth 35 to 20 000 Hz THD 0 7 typical at rated deviation 1 kHz S N ratio A weighted 120 dB A typical ...

Page 24: ...uriculares con micrófono Componentes acústicos Microfones Fones de ouvido Microfones s fios Fones de ouvido s fios Microfones de cabeça Componentes acústicos AKG Acoustics GmbH Lemböckgasse 21 25 A 1230 Vienna AUSTRIA phone 43 1 86654 0 e mail sales akg com For other products and distributors worldwide visit www akg com Technische Änderungen vorbehalten Specifications subject to change without not...

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