Micom Failure - Samsung CHB5707L/5237L Service Manual

7 Troubleshooting

7-1-17 Micom Failure

IC201 Pin 5 input is right?
Yes
IC201 Pins 6 and 7 inputs
18
are right?
Yes
IC201 Pin 2 input is right?
Yes
All in/output values are right?
No
Done
7-10
No
Check IC604.
No
Check X201, C206 and C207.
No
Check IC202.
No
Replace IC201.
WAVEFORMS
18 5.00 V (IC201, #6, 7)
CH1 P-P = 5.00 V CH1 RMS = 2.966 V
CHB5**7L/6**7L/7**7L