LG RH7521W Service Manual page 79

E
CD/DVD ?
CD
Select Mode: CD, Test and perform
Test from 4. LD Test of 'How to use
Test tool'
Check the input of CD/DVD.
(pin 17 of LCN201 :'H ')
Check the input of VRDC.
(pin 34 of LCN201)
Check the input of FPD.
(pin 19 of LCN201)
END
DVD
Select Mode: DVD, Test and perform
Test from 4. LD Test of 'How to use
Test tool'
Check the input of CD/DVD.
(pin 17 of LCN201 :'H ')