Sony XR-75Z9K Service Manual page 53

TROUBLESHOOTING
4.5 No Picture – HDMI 1/2/3/4
No Picture
Check HDMIcable
OK
Is 8K signal?
NO
Check other
HDMI input
All Inputs NG
Check Picture by other
TV set which is same
(or similar) model.
NG
(Target and other TV both NG)
Is using HDMI splitter ?
NO
Check Source equipment
by Reference TV set
(For example, GN4)
NG
(Reference TV set NG)
Check the settings of
Source equipment,cable
①
Change HDMI cable
NG
Connect to HDMI4
YES
OK (Other Input is OK)
Is NG input HDMI4?
NO
Check IC1000
OK (Other TV is OK)
②
Connect Source
equipment directly
YES
Change Main Board.
OK
(Reference TV OK)
Check with other
FFC (CN2200)
OK
Change V by One FFC
（CN2200)
YES
・Check +5V_Power line CL4024/4025/4026
・Check HPD line CL4008/4012/4014
+5V_Power OK?
(Spec:4.7~5.3V)
OK
HPD OK?
①
(Spec:2.4~5.3V)
Go to
OK
Check IC1000 on Main Board.
Check CL
+5V line:CL4024/4025/4026
HPD line:CL4008/4012/4014
NG
Check with
other ONT2 board
OK
Change ONT2 board
Check the below point
Check (tolerance ±5%)
HDMI1:R4079
NG
HDMI3:R4081
HDMI2:R4082
Check (tolerance ±5%)
NG
HDMI1:R4059/R4063/R4067
HDMI3:R4061/R4065/R4071
HDMI2:R4062/R4066/R4073
Change Main Board.
ONT2 board
NG
②
Main board
Resistor value?
NG
OK
Resistor value?
OK
NG
53
SYS SET