Test Patterm : SMPTE Color Bats
Check the condition of connectin of the input component video signal.
Check the condition of soldering state in U401
Check the short point in signal l ine.
Check for short circuits between each power terminal and the ground.
3. No Component Video Signal
Preliminary Checkpoints
The output signal
At U401
In digital Board
#22,25,27
at U1
in digital B/D
No Component
signal (SMPTE Color Bars)
Dose the signal
appear at PR14~19
In digital B/D
Dose the signal
appear at
PR29,31,34,35,38,39
In digital B/D
Check the LVDS Cable
and JP500
in Digital B/D
Change Digital B/D
Waveform 9
Waveform 10
Waveform 11
Waveform 12
Check the state of soldering
at JP1 &input signal part
Check U401 and
Y400 and related circuit
Check U16 and
Y2 and related circuit
Check U20 and
X2 and related circuit
Change the LVDS Cable
&LVDS chip
NG
NG
NG
NG
NG
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