Sony XR-55A95K Service Manual page 54

TROUBLESHOOTING
4.5 No Picture: HDMI 1/2/3/4
No Picture
Check HDMI cable
NG
OK
Check other
HDMI input
OK (Other Input is OK)
All Inputs NG
Check Picture by
other TV set which is same
(or similar) model.
OK (Other TV is OK)
NG
(Target and other TV both NG)
Is using HDMI splitter ?
YES
NO
Check Source equipment
by Reference TV set
(For example, GN4)
OK (Reference TV OK)
NG
(Reference TV set NG)
Check the settings of
Source equipment,cable
①
Change HDMI cable
IC1000 defects
Connect Source
equipment directly
Go to
Change Main Board.
Check the below point
・Check +5V_Power line CL4024/4027/4025/4026
・Check HPD line CL4008/4010/4012/4014
NG
+5V_Power OK?
(Spec:4.7~5.3V)
OK
NG
HPD OK?
(Spec:2.4~5.3V)
OK
①
Check IC1000
And inform to designer ｗith the following data.
Check CL
+5V line:CL4024/4027/4025/4026
HPD line:CL4008/4010/4012/4014
Check (tolerance ±5%)
HDMI1:R4079
HDMI2:R4080 Resistor value OK?
HDMI3:R4081
HDMI4:R4082
Check (tolerance ±5%)
HDMI1:R4059/R4063/R4067
HDMI2:R4060/R4064/R4080 Resistor value OK?
HDMI3:R4061/R4065/R4071
OK
HDMI4:R4062/R4066/R4073
Change Main Board.
NG
OK
NG
54
SYS SET