
5-6
Abnormal color of video picture
Yes
Abnormal color of
video picture
Check whether the 3.3V
and 1.8V power supply
voltages on the decoder
board are normal.
Check xt1, R32, C30 and C31
Check other of power supply electric
circuit
Correct the connection
Check whether the
video filter network
circuit is normal.
Yes
Yes
No
No
No
Check whether the 27MHz
output signal is normal.
Change U4
Yes
Trouble shooting chart
Summary of Contents for PD7010
Page 27: ...7 8 MAIN BOARD TOP ...
Page 28: ...7 9 MAIN BOARD BOTTOM ...
Page 29: ...TFT BOARD TOP 7 10 ...
Page 30: ...TFT BOARD BOTTOM 7 11 ...
Page 31: ...KEY BOARD TOP 7 12 ...
Page 32: ...KEY BOARD BOTTOM 7 13 ...
Page 33: ...8 0 Exploded View Diagram 8 1 ...
Page 36: ...9 0 REVISION LIST Version 1 0 x Initial release Version 2 0 xAdd version 93 77 ...