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TROUBLESHOOTING GUIDE


C834




R857
D805, D803, ZD804, Q801




3




Q04,Q851,Q852,Q853,IC802,IC804 41




8 IC507
IC01,IC301,FR440,FR441, D406,FR436,Q804,Q805.
8.0V D407,D408.



IC507.
75V



R405, D811, FR848.

135V



D813,R811,R812,T403,Q402,L801. Q401, Q402, T401.
FR459, FR901.




61




20~25, 28~29




10~17 IC503. Q205, IC201.




IC503. 29~30, 32~37 IC504.




Check the waveform
IC504. at pin 54~61 of IC507.




Check/Replace IC507,
Check/Replace IC507.
Q502~Q510.
NO VGA
Check the waveform
at pin 52, 60 of IC501.
NO NORMAL


Check/Replace Check the waveform
VGA01. at pin 31, 32, 33 of IC507.

NO NORMAL


Check/Replace Check/Replace
VGA01. IC507.




NO COMPONENT
Check the voltage
at pin 44 of IC01.
0V 5V


Check/Replace Check the waveform
IC01. at pin 10~13 of IC203.

NO NORMAL


Check the waveform Check/Replace
at pin 6~8 of IC203. IC503.

NO NORMAL


Check/Replace Check/Replace
Q202, Q208, Q209. IC203.
31V


FR852, D814.
FR848,D811,FR829,ZD103.




IC102, R110 .




61




19
IC201,Q203,Q204,IC204.




IC03
1, 6 IC301.




FR440,FR441,D407,D408. 19, 20 IC507.




IC507, Q501, Q514. IC301, D301.




PIN CUSHION

21 IC507.




IC507. IC401




IC401 R424.




Q404, Q405. D402.
12 IC701.


2.4V


IC701, X701. 6




Q701. 35,36,37 IC507.




IC507.




Check the waveform
at pin 9 of P504B.

NORMAL

Check/Replace Q2001~Q2003,
IC507,Q511~Q513. IC2001,D2008~D2009.