MULTIPLEX 
•  Incorrect connections 
•  The  use  of  accessories  other  than  genuine  MUL-
TIPLEX items 
•  Modifications or repairs which were not carried out 
by  MULTIPLEX  or  by  an  authorised  MULTIPLEX 
Service Centre 
•  Accidental or intentional damage 
•  Defects due to normal wear and tear 
•  Operation of the unit outside the limits stated in the 
specification,  or  in  conjunction  with  equipment 
made by other manufacturers. 
 
14. D
ISPOSAL
 
 
Electrical equipment marked with the cancelled waste 
bin  symbol  must  not  be  discarded  in  the  domestic 
waste; the owner should use the appropriate special-
ised disposal system. 
 
In the countries of  the  EU  (European  Union)  electrical ap-
paratus  must  not  be  discarded  via  the  normal  domestic 
waste  system  (WEEE  -  Waste  of  Electrical  and  Electronic 
Equipment,  Directive  2002/96/EU).  You  can  take  your  un-
wanted equipment to your nearest public collection point or 
recycling  centre,  where  the  staff  will  dispose  of  it  in  the 
proper manner at no charge to you. 
 
The  same  applies  to  the  batteries  you  use,  which  must 
never  be  discarded  in  the  domestic  waste.  Instead please 
take them to the appropriate collection point.  By disposing 
of  your  old  equipment  in  a  responsible  manner  you  can 
make  an  important  contribution  to  safeguarding  the  en-
vironment. 
 
 
 
 
 
 
 
 
15. F
AULT 
F
INDING
 
 
Although the system is simple to use and extremely secure and reliable, you may still encounter the occasional prob-
lem when using the SMART SX. The table below lists a few possible problems, together with their causes and reme-
dies. Please check the table, as the cause of a problem is often a mistake in handling, and the table is designed to help 
you locate errors which are often extremely simple. 
 
 
Fault  Reason  Remedy 
 
1 
 
Transmitter  cannot  be  switched 
on 
 
Dry    /  rechargeable  cells  completely 
flat 
Fit  new  dry  cells,  charge  re-
chargeable cells, check cells are 
correctly inserted 
 
2 
 
Control surface travels too small 
 
Dual Rates active 
Check  Dual  Rate  settings,  see 
Chapter 7.11 
 
3 
The system  fails  to  work over the 
distance  specified  for  the  range 
check 
The  receiver  aerial  may  not  be  in-
stalled correctly 
Try  a  different  aerial  position; 
see Chapter 7.16 
 
4 
 
Model cannot be controlled 
Receiver not bound to transmitter 
Flat airborne battery 
Carry out Binding procedure, 
Charge airborne battery 
 
5 
 
Binding cannot be carried out 
Distance  between  transmitter  and 
receiver too great 
Reduce the distance to 20 cm or 
less 
6 
Transmitter  is  blinking  and  beep-
ing when switched on 
Empty batteries  Fit new cells 
 
 
The MULTIPLEX team hopes you have many hours of pleasure with your SMART SX radio control system. 
 
 
Errors and amendments reserved