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Model
KLV-26NX400 KLV-32NX400 KLV-32NX500 KLV-40NX500 (serv.man2)
Pages
52
Size
2.12 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
klv-26nx400-klv-32nx400-klv-32nx500-klv-40nx500-sm.pdf
Date
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Sony KLV-26NX400 / KLV-32NX400 / KLV-32NX500 / KLV-40NX500 (serv.man2) Service Manual ▷ View online

-48-
KLV-26,32 NX400(S/B), 32,40 NX500
RM-GA018
HDMI  Problem
Check HDMI input source 
signal or cable.
OK
NG
NG
HDMI Signal Source Problem 
or cable problem
Check LVDS 
harness 
connection between 
BAA board.
Reconnect LVDS cable 
or change new LVDS 
cable
Check HDMI 
jack.
NG
OK
OK
Change BAA 
board
Change BAA board
Confirm HDMI input source 
format / resolution supported by 
TV?
OK
Change HDMI input source to 
TV supported format 
NG
3-3-7. HDMI Problem
-49-
KLV-26,32 NX400(S/B), 32,40 NX500
RM-GA018
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
3-3-8. PC Problem
-50-
KLV-26,32 NX400(S/B), 32,40 NX500
RM-GA018
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.
H Board
Series
Table: IR IC Ref no
3-4. Troubleshooting IR Problem
-51-
KLV-26,32 NX400(S/B), 32,40 NX500
RM-GA018
H2LS NO FUNCTION
Check 3.3V
in PIN2, CN1
OK
Change H2LS Board
OK
NG
NG
NG
*Check 
Pin1 Voltage Level 
in CN1 
OK
Check Wire Harness
And Connector 
Connectivity?
Change Wire Harness
And connect Properly
Check 3.3V in JL5604
BAA Board
OK
Change BAA Board
NG
*VOLTAGE  LEVEL FOR EACH PRESSED BUTTON
2.8 – 3.3V
2.80V
No Input
2.1536 - 2.5988V 
2.37V
Menu
1.6710 – 2.0229V
1.85V
Input
1.1747 – 1.4268V
1.30V
Vol +
0.7720 – 0.9403V
0.85V
Vol -
0.3421 – 0.4178V
0.38V
CH +
0.0000V
0.00V
CH -
Voltage range
Voltage 
(average)
KEY
3-5. Tact SW Problem
9-888-123-03
English
© 2010.03
Sony Corporation
Sony EMCS (Malaysia) Sdn. Bhd.
TVEG
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KLV-26NX400 KLV-32NX400 KLV-32NX500 KLV-40NX500 Service Manual 51 1.19 MB
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