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3. DTV part
DTV fails to work properly
Switch to DTV and
display picture
Check if the picture of
DTV or STAND-BY is
If DVB-T program
is normal?
① no respondence when switch to DTV
Check the power
supply of DVB-T
Refer to checking
procedure (2)
Begin
Yes
Yes
normal
Yes
No respondence when switch to DTV
J06
pin
1GPIO
should be high level
Check power supply of power board, if
No
J06 pin1 is high level, check crystal of
DVB-T and frequency of SDRAM CLK
Check if YUV of J03 DVB-T module
No
output is normal
Check if RF input signal is normal, TS
No
stream of TUNER has output
If
main
chip
works normally
Refer to checking
procedure (3)
38
If DTV image is
normal
Refer to checking
procedure (4)
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