Where do you replace the battery in a Sony DVP-FX730 player?

The battery is a 7.4 volt 3200 milliAmpereHour 23.68 Watthour lithium-polymer battery. Remove the 10 screws on the underside of the unit and lift up the keypad/cover to reveal the battery. The battery is adhered with double stick tape so use a thin plastic scraper to remove the battery from the compartment. You may find that in some cases, a defective battery has swollen to the point of rendering the DVD player inoperable because the swollen battery presses a portion of the plastic case into the path of rotation of the DVD.