Sanyo 31C426 RGB input pinout

[ituba]

I am new to videokarma and I know little about the internals of TVs. I have recently picked up a Sanyo 31C426 (chassis no A2G-42600) TV/monitor from a video production company, which was moving. It has an input port labeled RGB, which is actually the reason I picked it up. I'd like to use it with an old computer (an Amiga 500 actually), which outputs a 15.5 kHz NTSC RGB signal. Does anybody know the pinout of this RGB port? Is it--as I hope--an analog 15.5 kHz port? I can't find any info on this on the www. Thank you,

Imre