Sony KD-75X7800F Service Manual page 60

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4.5 NO PICTURE: HDMI 2
No Picture
Check HDMI cable
OK
Check other
HDMI input
All Inputs NG
Check Picture by other TV set
which is same model
Target board & other
TV set both NG
Is using HDMI splitter ?
NO
Check Source equipment
by Reference TV set
(For example, RB1)
Reference TV set
NG
Check the settings of
Source equipment,cable
NG
Change HDMI cable
Other Input is OK
Other TV set
OK
IC1000 NG
Connect Source
equipment directly
YES
Change B-Board.
And inform the designer of it
Reference TV Set
OK
Check the below point at
Connector side
・Check +5V line CL3643
・Check HPD line CL3624
・Check DDC lines CL3610/CL3611
・Check TMDS lines
+5V line OK
and HPD line NG
Spec:2.4~5.3V
+5V line NG
Replace
Spec:4.7~5.3V
R3619
Replace R3647
NG
IC1000 NG
And inform the designer of it
All lines NG
Replace
CN3600
TMDS
lines NG
Replace
RB3613,RB3614,
DDC lines NG
RB3605,RB3606
Replace
RB3604,R3658,
R3659
NG
NG
NG
60
SYS SET

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