Dvd - Hitachi 22LD3750DC Service Manual

5.4 DVD module board
DVD module board has two parts: a loader and an electronic card. Electronic card controls the
loader and has connections with 17MB29 and DVD keypad.
Three cables are used to connect 17MB29 and DVD electronic card: power, data and sense.
12V (500mA) is sent to DVD electronic card by power cable:
Y/C and/or CVBS video, stereo audio outputs and infra-red input of DVD module board is carried on
data cable:
When a DVD is inserted into the loader, the DVD electronic card sends an interrupt signal
(DVD_SENSE) to the 17MB29 microcontroller:
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