Sony A1E Series Service Manual page 41

FLOW
4-4. NO PICTURE (HDMI)
HDMI4
No Picture
Other Input is OK
Check other
HDMI input
All Inputs
are NG
Check Picture by other TV set
which is same model
Target board & other TV
set both NG
Is Distributor used ?
NO
Check Source equipment
by Reference TV set
(For example, RB1)
Reference TV set
NG
Check the settings of
Source equipment
XBR-55/65A1E
Other TV set
OK
Replace
IC1000
YES
Connect Source
equipment directly
Reference TV Set
OK
Change BKA board
Check the below point at
Connector side
- Check +5V line
- Check HPD line
- Check DDC lines
- Check TMDS lines
+5V line is OK
and HPD line is NG
+5V line only NG
Spec:2.4~5.3V
Spec:4.7~5.3V
Replace
Replace
R3626,R3633,R3638,
R3645
R3642,Q3601
NG
Replace IC1000
TROUBLE SHOOTING
All lines
are NG
Replace
CN3602
NG
TMDS lines
only NG
DDC lines
only NG
Replace
RB3617,RB3618,
RB3609,RB3610
NG
Replace
RB3602,R3662,R3663
NG
41