akira 21SHS3 Series, Service Manual

Page: 13 / 61

13
Model No: 21SHS3-CE.doc
Version 1.0
YES
0V
＞ 3.8V
＜ 2V
Exam the voltage of “ AGC ” on A101 without antenna
Check R317, R318, R316,C307,A101,N301
Test the voltage on pin 14, 54, 56of N301
NO
YES
YES
NO
≥ 2V
YES
NO
0V
YES
Check,L331, C333, L752,C753A, L751, C751
Test the voltage on pin 51, 52, 53, 50 of N301
Check N505, N301
Check N503, N301,C532, R565,C524,
,VD561,V542
Observe if there is snow-noise-wave disturbance on the CRT via using “Signal-input way ” by touching pin 23 and pin 24 of N301
Observe if there is snow-noise-wave disturbance on the CRT via using “Signal-input way ”by touching pin 17 of N301 Check R331,C336,C337
Observe if snow-noise-wave disturbance on the CRT via using “ signal-input way ”by touching pin 40 of N301
Test if there is the sync signal on the pin 39 of N301
Check V351,V352,L351,Z351,C364
Check C323,A101,N301
Observe if there is snow-noise-wave disturbance on the CRT via using “ Signal-input way ” by touching pin 38 of N301
Check if voltage on pin 31 of N301 is 1.7V
Check C361,C362,L361,N301
Observe if these is snow-noise-wave disturbance on the CRT via using “ Signal-input way ” by touching pin 51,52,53 of N301
Check R381,R382,R383,V912,V922,V932,N301
8V
5V
NO
NO
NO