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  • KDL-32R400C, KDL-32R403C, KDL-32R405C, KDL-32R408C, KDL-32R410C, KDL-40R450C, KDL-40R453C, KDL-40R455C, KLV-32R412C

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Model
KDL-32R400C KDL-32R403C KDL-32R405C KDL-32R408C KDL-32R410C KDL-40R450C KDL-40R453C KDL-40R455C KLV-32R412C
Pages
127
Size
14.66 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / COMMON
File
kdl-32r400c-kdl-32r403c-kdl-32r405c-kdl-32r408c-kd.pdf
Date
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Sony KDL-32R400C / KDL-32R403C / KDL-32R405C / KDL-32R408C / KDL-32R410C / KDL-40R450C / KDL-40R453C / KDL-40R455C / KLV-32R412C Service Manual ▷ View online

Troubleshooting
3-3. Standby LED Blinking
3-3-4. 5 times blinking
START
Reinsert LVDS Flat
Flexible Cable (FFC) at B* Board and
S
C
Replace B-Board
B* Board Issue
Incorrect FFC
TV Boots Up
Normally
TV Boots Up
Normally
5x Blinking Happens
Panel Side. Make sure FFC is
taped properly.
Insertion
5x Blinking Still 
Happens
5x Blinking is Still 
Observed
Replace LVDS Flat Flexible
Cable (FFC)
LVDS
Cable Issue
Replace
*O-Cell  or *Panel Module
Panel or O-Cell Issue
TV Boots Up
Normally
TV Boots Up
Normally
(
)
Cable Issue
* O-Cell or Panel 
Module replacement 
depends on service 
capabilities 
5x Blinking Still 
g
Happens
END
21
Troubleshooting
3-3. Standby LED Blinking
3-3-5. 6 times blinking
6x blinking
6x blinking
Check harness at CN9000
Check harness at CN9000
NG
Connect Harness and try again
Check F9000 continuity
Check F9000 continuity
Change  B*board
OK
OK
NG
Check voltage at CL9000
Re-download SW 
OK
OK
Change 
board
OK
NG
NG
0V
Perform this 
checking while the
Check voltage at CL9003
SW issue
OK
OK
OK
NG
2.5V – 3.3V
0V
0 5V – 1 3V
checking while the 
board is turning 
ON (before go to 
6x blinking)
Install board on another panel
Install board on another panel
Change  board
NG
0.5V – 1.3V
Panel issue
OK
22
X6 Standby LED Blinking : Board Layout
Troubleshooting
X6 Standby LED Blinking : Board Layout
CN9000
Backlight 
harness
Figure 1: CN9000 location
CL9000
CL9003
CL9003
GND
CL9000
CL9000
GND
F9000
F9000
Figure 2: LED Driver Circuit portion in BA board
Figure 3: LED Driver Circuit portion in BE board
23
Troubleshooting
3-3. Standby LED Blinking
3-3-6. 7 times blinking
Remove
A
i t S
k
C
t
No 7x blinking Ch k A i t S
k
h
Ch
k A
i t S
k
h
Assist Speaker
Impedance
≠ 6~8 Ω
START
7x blinking
Assist Speaker Connector 
at CN4505 & perform 
AC OFF - ON
No 7x blinking
7x blinking
and Assist Speaker impedance
Check Assist Speaker harness 
and Assist Speaker impedance
Impedance 
≠ 6 8 Ω
No connectivity for speaker harness
F4500 broken
Check connectivity 
of F4500
7x blinking & F4500 OK
Change Assist 
Speaker 
Harness
Change Assist 
Speaker
7x blinking
Check connectivity
No connectivity of F4500
F4500 broken, 
Replace F4500
& perform AC OFF  ON
Connect back 
Assist Speaker Connector
to CN4505 
& perform AC OFF - ON
Check connectivity 
of F4501
No connectivity of F4501
7x blinking & F4501 OK
F4501 broken, 
Replace F4501
Audio IC problem,
IC4505 damage
No 7x blinking
Change KK 
board
24
DONE
Page of 127
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