Brand:

• AKG

Models:

• WMS 450
• WMS 470

Overview:​​​​

This article discusses the error codes of AKG WMS 450 and 470 wireless systems, what they indicate, and how to approach troubleshooting.

Receiver Only:

ERR.>SYS< 

• Frequency settings cannot be changed.  

​1.  Switch power to receiver OFF and back ON after about 10 seconds.  

​2.  If problem persists, please visit HARMAN Professional Support to identify the appropriate local support team for your region.   
 

ERR.>PRE< 

• Error in selected Preset.  

​1.  Continue with previous Preset.  

​2.  Select error-free Preset.  

​3.  If problem occurs frequently, contact Technical Support.  
 

TXBand 

 • Transmitter frequency band is not identical with receiver frequency band, OR

 • RF output too high/low.  

​1.  Use transmitter with the same frequency band as the receiver.  

​2.  Use transmitter with lower/higher RF output.  

Receiver and Transmitter:

ERR.>USR< 

• Last setting cannot be loaded.  

​1.  Set frequency and squelch threshold again.  

​2.  If problem occurs frequently, contact Technical Support.  

ERR.>RF< 

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

​1.  Set different frequency.  

​2.  If problem persists, contact Technical Support.  

Err.>IR< 

• Infrared transmission failed.  

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

Transmitter Only:

>-h< 

• Transmitter cannot identify battery as dry or rechargeable type, OR

•​ Transmitter was switched on during charging.   

​1. Remove battery and reinsert after approx.  five seconds.  

​​2. Remove transmitter from charger, switch off, and restart charging (cf. CU 400 manual).  

>ChArGE< (rechargeable battery only)

• Battery is not fully charged.

​1. Charge transmitter using CU 400 charger.  

​​2. Replace transmitter battery with new dry or fully charged rechargeable battery.