Cracking open a Motorola DVR

By carareynolds May 18, 2007, 12:45 AM PDT

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The Motorola DCT6412 III - front panel

ntby Andrew (aka ashumate)
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ntThe Motorola DCT6412 III is offered by many cable companies. On the front panel we can see a USB A/V input and Smart Card ports and local controls. At this time, no cable company has enabled any of these ports.

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The Motorola DCT6412 III - rear panel

Here on the back, we see all of the box’s other ports, the RF splitter, and the black tamper seal (the black square above the IEEE 1394 ports). So far, the only ports that are known to be active are the SPDIF, A/V out, HDMI component, IEEE 1394, and the power out. Now be warned: your cable company might not like you opening this up.

The Motorola DCT6412 III - guts

With the security screws removed and the tamper seal broken, we see the guts: a segate 120GB SATA drive, a very basic ATX power supply, the twin tuners, and the cable modem interface (between the tuners).

The Motorola DCT6412 III - motherboard

Here, with the hard drive removed, you can see the motherboard. There is one fan to keep the hard drive cool, and the CPU is cooled by the heat sink. There is also a battery in the top left corner, just below the smart card reader. You can also see that the memory is built onto the board just above the heat sink.

The Motorola DCT6412 III - main receiver chip

This is the main receiver chip, which decodes DOCSIS and is the network interface.

The Motorola DCT6412 III - built-in cable modem

This is another part of the box’s built-in cable modem. It is what streams on-demand video and data to the DVR.

The Motorola DCT6412 IIII - two receivers and cable modem

Here’s a closer view of the two receivers and the cable modem interface. The twin receivers allow you to watch one show and record another, or record two shows at the same time.

Uh oh

Now it’s time to put it all back together before my wife gets home and sees our DVR in pieces.

By carareynolds

Cara Reynolds an editor on TechRepublic's content team. She has been working in educational, licensed, and Web publishing for more years than she cares to admit and hosts the Right Tool for the Job blog on TechRepublic.

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