Sony XBR-55X900H Service Manual page 65

2021/04/27 23:25:57 (GMT+09:00)
4.5 No Picture : HDMI 1/2/3/4
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
SAFETY NOTES
①
Change HDMI cable
NG
Other Input is OK
Other TV set OK
Connect Source
equipment directly
YES
And inform the designer of it
Reference TV Set
OK
SELF DIAGNOSTIC FUNCTION TROUBLESHOOTING
T R O U B L E S H O O T I N G
・Check +5V_Power line CL4024/4027/4025/4026
・Check HPD line CL4008/4010/4012/4014
+5V_Power OK?
(Spec:4.7~5.3V)
OK
Check IC1000
HPD OK?
(Spec:2.4~5.3V)
OK
①
Go to
Check IC1000
Change B-Board.
And inform the designer of it.
Check CL +5V line:CL4024/4027/4025/
4026 HPD line:CL4008/4010/4012/4014
SERVICE ADJUSTMENT
Check the below point
NG Check
R4079/R4080/R4081/R4082
Register OK?
(Spec:4.7kohm±5%)
OK
Change B-Board.
DIAGRAM
NG
65
HANDLING GUIDE
SYS SET