Sony KDL-32R435A / KDL-40R485A / KDL-46R485A / KLV-24R402A / KLV-24R422A / KLV-32R402A / KLV-32R407A / KLV-32R422A / KLV-40R452A / KLV-40R457A / KLV-40R472A / KLV-46R452A / KLV-46R472A Service Manual ▷ View online
ITC2
CHASSIS
R402/ R407/ R422/ R435/ R452/ R457/ R472/ R488
SECTION 3
TROUBLESHOOTING
3-1. Troubleshooting Flow
START
Does the Power Led
stay on when the
Open Detail
- No Power
TV is switched on ?
Is the Standby Led
No Power
Open Detail
blink ?
- Standby LED Blink
Green & Amber
blink?
- Panel ID Error
- Panel Not Supported
Is the Picture and
Sound OK ?
Open Detail
- Picture/Audio/Video
END
10
ITC2
CHASSIS
R402/ R407/ R422/ R435/ R452/ R457/ R472/ R488
Troubleshooting
3-2. No Power
No Power
Check DC voltage at
JL6001
Yes
•See DDCON
Sheet
Is it 19.5V?
No
Sheet
T k
t d
t
Take out adaptor
and test at adaptor
output is it 19V – 19.5V?
(Refer Figure 1)
BB board
Yes
No
Change adaptor
and test again
Adaptor
NG
OK
AC source
NG
Figure 1: How to test DC voltage
at adaptor output
at adaptor output
11
ITC2
CHASSIS
R402/ R407/ R422/ R435/ R452/ R457/ R472/ R488
Troubleshooting
3-2-1. DD Con
Start
DDCON
Check voltage at JL6003
is it 3.3V?
OK
Check F6001
& F6002
NG
No
Fuse
Yes
Check voltage at JL6000
No
Change BB
is it 1.2V?
Yes
OK
Change BB
board
DDCON
Check voltage at JL6002
Is it 1.5V?
Check voltage at JL6012.
Is it 12V?
Check F6003.
Is it ok.
No
Yes
NG
No
Change BB
board
Check voltage at JL6005
is it 5V?
No
Yes
NG
Change BB
board
Fuse
Yes
After checking, take note of
NG condition & change BB board
12
NG condition & change BB board
ITC2
CHASSIS
R402/ R407/ R422/ R435/ R452/ R457/ R472/ R488
Troubleshooting
Troubleshooting References (BB Board)
JL6002
JL6001
JL6003
JL6000
JL6006
JL6005
JL6006
F6003
13
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