No Picture: Mhl (Bmx) - Sony KDL-43W7 C Series Service Manual

Troubleshooting

3-4-9. NO PICTURE: MHL (BMX)

No Picture
Check voltage at High
MHL sense,
R5445
Spec:High:2.0~5.3V
Low:0.8~2.0V
Low
Low (< 2V)
Check DDCCLK,
Check R5409 (47k )
at R5424
High
OK
Change
MHL cable
Replace IC1000 (SoC).
And inform the designer of it
Check HDMI_0_HPD_CBUS
at connector side
NG
(Open)
Replace
R5409
NG
D5404
(Open)
Replace
D5404
NG (No communications)
OK
Check TMDS(D0+/D0-) lines
at connector side
OK
Check Source equipment
by Reference TV set
(For example, Samsung TV(UN46ES7000)
, Toshiba TV(42WL863), RB1, RB2)
NG
Check the settings of Inform the designer
Source equipment
Replace IC1000 (SoC).
And inform the designer of it
NG (No
communications)
Replace
R5443, R5444
OK
Check HDMI picture
in this input
NG
OK
Check "NO PICTURE
– HDMI" flow
of it
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