Sony XBR-55X900H Service Manual page 74

2020/06/27 06:31:32 (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
SECTION 1
T R O U B L E S H O O T I N G
①
Change HDMI cable
NG
Other Input is OK
Other TV set OK
Check IC1000
Connect Source
equipment directly
YES
Go to
Change B-Board.
And inform the designer of it
Reference TV Set
OK
SECTION 2 SECTION 3
S E C T I O N 3
・Check +5V_Power line CL4024/4027/4025/4026
・Check HPD line CL4008/4010/4012/4014
+5V_Power OK?
(Spec:4.7~5.3V)
OK
HPD OK?
(Spec:2.4~5.3V)
OK
①
Check IC1000
And inform the designer of it.
Check CL
+5V line:CL4024/4027/4025/4026
HPD line:CL4008/4010/4012/4014
SECTION 4
Check the below point
NG
Check
R4079/R4080/R4081/R4082
Register OK?
(Spec:4.7kohm±5%)
OK
Change B-Board.
SECTION 5
NG
74
SECTION 6
SYS SET