Conrad Digital Thermometer Module With LED Display Kit 192147 Data Sheet

Product codes
192147
Page of 20
 
1.10 Final check 
Before starting-up, check the printed circuit board once again that all the components 
have been inserted properly and with the correct polarity. Check on the soldering side 
(the side with the conducting pathways), whether the conducting pathways have been 
bridged by the remains of the soldering tin, which can lead to short-circuits and to a 
destruction of the components. 
Further, it must be checked whether the cut wire-ends are lying on or below the printed 
circuit board, which can also lead to short-circuits. 
Most of the components sent back for a reclaim have poorly soldered connections (cold 
solder joints, solder straps, incorrect or unsuitable soldering tin used, etc.). 
Circuit diagram