Epson RX500 waste pad replacement instructions

Question

I have an EPSON Stylus Photo RX500 printer and the ink waste pads need to be replaced. I already reset the counter that tripped past its limit, but now I have to replace the pads. I ordered and have new waste pads, but don't have any intructions on how to install them. Do you know if this is a difficult process that I can perform myself or should I take it in to a service dealer? Are there any intructions available anywhere?

Thanks,
Gary