Dd Con - Sony KLV-24R402A Service Manual

Troubleshooting

3-2-1. DD Con

Start
Check voltage at JL6003
is it 3.3V?
Yes
Check voltage at JL6000
is it 1.2V?
Yes
Check voltage at JL6002
Is it 1.5V?
Yes Yes
Check voltage at JL6005
is it 5V?
DDCON
OK
No
Check F6001
& F6002
No
Change BB Change BB
board
No
Change BB
board
No
Change BB
board
Yes
NG
Fuse
No
Check voltage at JL6012.
Is it 12V?
ITC2
R402/ R407/ R422/ R435/ R452/ R457/ R472/ R488
DDCON
OK
Check F6003.
Is it ok.
NG NG
Fuse
After checking, take note of
NG condition & change BB board NG condition & change BB board
CHASSIS
12