http://www.lg.com/lgecs.downloadFil...1.pdf&TC=DwnCmd

http://www.mediafire.com/?62d1l0oo5qxug1r

幫你找到原廠英文版的說明書

中文版的連結斷了

關於耳機連結在說明書的第129頁

AUDIO menu items are disabled when connecting a headphone.

When changing AV MODE with a headphone connected, the change
is applied to video but not to audio.

Optical Digital Audio Out is not available when connecting a headphone.

Headphone impedance: 16 Ω
Max audio output of headphone: 10 mW to 15 mW
Headphone jack size: 0.35 cm