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10. Trouble Shooting——
Check input picture
Check 0V9 & 1V5 & 3V3
Check CS01
Check reset and crystal
N
and X12M
Check software and ID
N
Upgrade
soft and
select
right ID
No Picture
signal and source
Y
Check Panal_vcc
Y
Y
oscillator circuit
Y
number
Y
Replace
main board
No Picture
Check Q601/Q600
N
working condiction
Check UDF1,UDJ1,UDC1
N
output
N
Check keypoints 5V
N
Check UD1
output
N
Check voltage of
keypoints 3V3STB 12V
N
Check PSU output
35
Y
Check
P602/2 2 7/28/29/30
P601_1/2/3/4
=12V?
Y
Check panel to confirm
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