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B. Check devices U1 CCIR656 signal to see if there is any cold or hollow
soldering and reverse soldering of IC or parts missing.
C. Check U1 to see if there is any cold or hollow soldering and reverse soldering
of IC or parts missing.
D. If the above actions are not working, replace the Main Board.
9 Driver Board
A. Check J1、J2 to see if there is any cold or hollow soldering.
B. Check J1 connected to the main board to see if there is any problem of
plugging. Rule out the problem.
C. Check U1 to see if there is any cold or hollow soldering and reverse soldering
of IC or parts missing.
D. Check J1、AUJ1 to see if there is any cold or hollow soldering .
E. If the above actions are not working, replace the Driver Board.
z T72
、
TFT image is black and white
9 Main Board
A. Check J1 cable connected to the driver board to see if there is any problem of
plugging. Rule out the problem.
B. Check devices after CCIR656 signal to see if there is any cold or hollow
soldering and reverse soldering of IC or parts missing.
C. Check U1 to see if there is any cold or hollow soldering and reverse soldering
of IC or parts missing.
D. If the above actions are not working, replace the Main Board.
9 Driver Board
A. Check J1、J2 to see if there is any cold or hollow soldering.
B. Check AUJ1 cable connected to the main board to see if there is any problem of
plugging. Rule out the problem.
C. Check U1 to see if there is any cold or hollow soldering and reverse soldering
of IC or parts missing.
D. Check J1、J2 to see if there is any cold or hollow soldering
E. If the above actions are not working, replace the Driver Board.
z T73
、
TFT image shakes or is distorted
9 Main Board
A. Check J1 cable connected to the driver board to see if there is any problem of
plugging. Rule out the problem.
B. Check devices after CCIR656 signal to see if there is any cold or hollow
soldering and reverse soldering of IC or parts missing.
C. Check U1 to see if there is any cold or hollow soldering and reverse soldering
of IC or parts missing.
D. If the above actions are not working, replace the Main Board.
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