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5 Troubleshooting
5 Troubleshooting
5-1 No Power
Does DC 13V, 5V
1 2
No
Check Inverter/Adaptor Board. 1
WAVEFORMS
appear at CN600?
Yes Does DC 3.3V
3
No
Check related circuit of IC602.
appear at R608? Yes 2
Does DC 3.3V
4
No
Check related circuit of IC601.
appear at C602?
Yes 3 Check IC700(VCTI-D2), IC202(Micom) and IC300(MST51510).
4
5-1
5 Troubleshooting
5-2 No Video (PC Signal)
Power Indicator is green. Yes Does a signal appear at C105,C106 and C107(R,G,B Input)? No 7 Check related circuit of CN101.
WAVEFORMS
9
Yes
Does a signal appear at R114,R110(H/V Sync)?
7 8
No Check related circuit of CN101.
8
Yes Does a signal appear at pin 1~30 of CN301(LVDS output)?
10
No
Check related circuit of IC300. 9
Yes
Replace LCD Panel.
10
5-2
5 Troubleshooting
5-3 No Picture (TV)
Does a signal appear at PIN1, 2 of FT700(X6966M)? No
5
Check CN700 and Tuner. 5
WAVEFORMS
Yes Does a signal appear at (PIN71,72,73, 74,75,78,79,80) of IC700?
6
No
Check related circuit of IC700.
Yes
6
10
Does a signal appear at PIN1~30 of CN301 (LVDS output)?
No
Check IC300.
Yes 10
Replace LCD Panel.
5-3
5 Troubleshooting
5-4 No Picture (VIDEO/S-VIDEO/SCART )
Does a signal appear at C740(VIDEO)/C742,C744 (S-VIDEO)/C741(SCART)? No
Check CN506. 6
WAVEFORMS
Yes Does a signal appear at (PIN71,72,73,74, 75,78,79,80) of CN501?
6
No
Check related circuit IC1700.
Yes 10
10
Does a signal appear at PIN1~30 of CN301 (LVDS output)? Yes
No
Check IC300.
Replace LCD Panel.
5-4
5 Troubleshooting
5-5 No Sound(TV)
Does a signal appear at pin1, 2 of FT700(X6966M)?
5
No
Check CN700 and Tuner. 5
WAVEFORMS
Yes
12
Does a signal appear at R563, R566?
No
Check related circuit IC700.
Yes
11 No
11
Does a signal appear at Pin5, 2, 9, 16 of IC55 (SL/SROUT)?
Check related circuit IC55.
Yes 12
Check the Speaker L/R.
5-5
5 Troubleshooting
5-6 No Sound(VIDEO,S-VIDEO,SCART)
Does a signal appear at C740(VIDEO)/,C742,C744 (S-VIDEO)C741(SCART)?
No
Check CN506, CN508, CN713.
Yes
Does a signal appear at R563, R566?
No
Check related circuit IC700.
Yes
Does a signal appear at Pin5,2,19,16 of IC55 (SL/SROUT)?
No
Check related circuit IC55.
Yes
Check the Speaker L/R.
5-6