LG 22LG30 User Guide - Page 13
RS-232C IN CONTROL & SERVICE PORT, Analog PC Connection. Uses a D-sub 15 pin cable - update
UPC - 719192173071
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PREPARATION 1 HDMI/DVI IN, HDMI IN Digital Connection. Supports HD video and Digital audio. Doesn't support 480i. Accepts DVI video using an adapter or HDMI to DVI cable (not included) 2 COMPONENT IN Analog Connection. Supports HD. Uses a red, green, and blue cable for video & red and white for audio. 3 RGB (PC) Analog PC Connection. Uses a D-sub 15 pin cable (VGA cable). AUDIO (RGB/DVI) 1/8" headphone jack for analog PC audio input. 4 REMOTE CONTROL PORT For a wired remote control. 5 RS-232C IN (CONTROL & SERVICE) PORT Used by third party devices. 6 ANTENNA/CABLE IN Connect over-the air signals to this jack. Connect cable signals to this jack. 7 DIGITAL AUDIO OUT OPTICAL Digital audio output for use with amps and home theater systems. Includes an optical connection. Note: In standby mode, these ports do not work. 8 AUDIO OUT Analog audio output for use with amps and home theater systems. 9 AV (Audio/Video) IN Analog composite connection. Supports standard definition video only (480i). S-VIDEO Better quality than standard composition. Supports standard definition video only (480i). 10 USB SERVICE ONLY SERVICE ONLY RS-232C IN (SERVICE ONLY) Used for software updates. 11 Headphone INPUT Plug the headphone into the headphone socket. 12 Power Cord Socket For operation with AC power. Caution: Never attempt to operate the TV on DC power. 11