Willcom D4 Teardown: Design Influenced by Quanta (page 3)
Click each part to show a larger picture
We discovered that the positions of individual parts, numbers, etc were printed on the mainboard. And It looked just like a computer board. There are many parts used on the mainboard including many LSIs made by Taiwanese manufactureres. The 1seg tuner module was probably made by RfStream Corp, not by Sharp.