KLV-22EX300, KLV-26EX300, KLV-32EX300, KLV-32EX400, KLV-40EX400, KLV-46EX400 - Sony TV Service Manual (repair manual). Page 66

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KLV-22, 26, 32 EX300, 32, 40, 46 EX400
RM-GA019
PC Problem
Check PC input source 
signal or cable.
OK
NG
NG
PC Signal Source Problem or 
cable problem
Check LVDS harness 
connection between 
BAA board.
Reconnect LVDS cable 
or change new LVDS 
cable
Check PC jack 
"CN2300".
NG
OK
OK
Change BAA board
Change BAA board
Confirm PC input source format 
/ resolution supported by TV?
OK
Change PC input source to TV 
supported format 
NG
3-3-9. PC
3-4. IR Problem
IR NO FUNCTION
Probe JL5621 in
BAA to check RC response 
When press RC
Check Wire Harness
And Connector 
Connectivity?
Check 3.3V
in Pin1 of IR IC 
in H Board
OK
Change H2LR Board
Change Wire Harness
And connect Properly
OK
NG
NG
NG
OK
Check Remote Control 
Function? 
Change Remote Control
NG
OK
Check 3.3V 
at FB5604 in 
BAA Board
Change BAA Board 
NG
A
A
OK
IC002
HLR
EX, NX 
IC101
H2LR
BX
IR ref 
no.

Board
Series
Table: IR IC Ref no
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