Model No: 21LAS1Bn
Version
1
.0
17
5V
YES
YES
NO
NO
9V
YES
NO
YES
YES
YES
NO
Hear if there is the voice liking “Ka…Ka ” in the loudspeaker via using “ Signal-input way ” by touching pin 31 of N204
Check C103,R706,C703,N204
Hear if there is the voice liking “Ka…Ka ” in the loudspeaker via using “ Signal-input way ” by touching pin 13 of N203
Hear if there is the voice liking “Ka…Ka ” in the loudspeaker via using “ Signal-input way ” by touching pin 28 of N204
Check R202, C202, N204
Check R290,N902, N204
The voltage on pin 9,10,11of N203
Check 9V-power supply
Hear if there is the voice liking “Ka…Ka ” in the loudspeaker via using “ Signal-input way ” by touching pin 7 of N701
Check VD552,R573,C717,T501,N701
The voltage on pin 16 of N203
Hear if there is the voice liking “Ka…Ka ” in the loudspeaker via using “ Signal-input way ” by touching pin 12 of N203
Check C292,R293,N203
Hear if there is the voice liking “Ka…Ka ” in the loudspeaker via using “ Signal-input way ” by touching pin 5 of N701
The voltage on pin 9 of N701
Check W214,VD216,R216,R294,N203
Check V701,C703, R706
Check SP301, SP302, N701
NO
9V
9V
24V
NO
