Sony KLV-22EX300 Service Manual page 66

KLV-22, 26, 32 EX300, 32, 40, 46 EX400
3-3-9. PC
3-4. IR Problem
IR NO FUNCTION
Check Remote Control
Function?
OK
Check Wire Harness
And Connector
Connectivity?
OK
Check 3.3V
in Pin1 of IR IC
in H Board
OK
A
RM-GA019
PC Problem
Check PC input source
signal or cable.
OK
Confirm PC input source format
/ resolution supported by TV?
OK
NG
Check PC jack
"CN2300".
OK
Check LVDS harness
connection between
BAA board.
OK
Change BAA board
NG
Change Remote Control
NG
Change Wire Harness
And connect Properly
Check 3.3V
NG
at FB5604 in
BAA Board
NG
Change BAA Board
NG
PC Signal Source Problem or
NG
Change PC input source to TV
supported format
Change BAA board
NG
Reconnect LVDS cable
or change new LVDS
Probe JL5621 in
NG
BAA to check RC response
When press RC
OK
Change H2LR Board
– 66 –
cable problem
cable
A
OK
Table: IR IC Ref no
Series H
Board
BX H2LR
EX, NX HLR
IR ref
no.
IC101
IC002