No Power - Sony KLV-24R402A Service Manual

Troubleshooting

3-2. No Power

Figure 1: How to test DC voltage
at adaptor output
No Power
Check DC voltage at Yes
JL6001
Is it 19.5V?
No
Take out adaptor T k t d t
Yes
and test at adaptor
output is it 19V – 19.5V?
(Refer Figure 1)
No
OK
Change adaptor
and test again
NG NG
AC source
R402/ R407/ R422/ R435/ R452/ R457/ R472/ R488
•See DDCON
Sheet Sheet
BB board
Adaptor
ITC2 CHASSIS
11