Is Sony CRX170E the original "Combo Drive" for MDD?

Hello all,
Last week I bought on eBay a used Power Mac G4 "Mirrored Drive Doors" 867 DP model, which arrived today. Unfortunately, the optical drive in the computer is apparently unable to recognize or read DVD discs, even though the specifications for this model indicate that the included optical drive is supposed to be a "Combo Drive" that reads DVDs as well as reading and writing CDs. I'm trying to determine whether the optical drive in this particular computer is original equipment, whether it is supposed to be able to read DVDs, whether it is malfunctioning, and whether I have reason to complain to the seller of the item.
The drive recognizes and reads a previously-burned CD-R just fine, but refuses to recognize either of two original Apple DVD-ROM discs that I've tested it with. System Profiler indicates that the drive is a Sony model CRX170E. Searching the Web, I've found that this model is indeed an OEM drive manufactured for Apple by Sony, but I haven't been able to determine conclusively the answers to the following questions:
(1) Is the Sony CRX170E the drive that was originally installed in this Mac model? (If not, then I'll need to ask the seller to explain how it got in there.)
(2) Is the Sony CRX170E in fact a Combo Drive, which should be able to read DVDs, or is it just a CD-only drive? (If it's a Combo Drive, then I'll have to troubleshoot its failure to recognize DVDs.)
Any help you could provide in answering these questions would be much appreciated.
For the record, here's a link to the eBay auction for this computer (including the item description, which clearly states that it comes with a Combo Drive, and that there are no hardware problems with the computer):
- http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=200229689213
And here are links to the specs for this computer model, at EveryMac and Apple, respectively:
- http://tinyurl.com/23vavt
- http://support.apple.com/kb/SP63
Thanks,
~ Justin

Here are the details for the drive as displayed in System Profiler:
*SONY CD-RW CRX170E:*
Manufacturer: SONY
Model: SONY CD-RW CRX170E
Revision: 2.2d
Drive Type: CD-RW
Disc Burning: Apple Supported/Shipped
Removable Media: Yes
Detachable Drive: No
Protocol: ATAPI
Unit Number: 0
Socket Type: Internal
As for Mac OS X version, I'm accustomed to using 10.4 on the Mac I'm replacing, but this "new" MDD came with a clean install of 10.3 on it. The problem reading DVDs first became apparent when I attempted (unsuccessfully) to read or boot from my 10.4 installation DVD on the "new" machine.
And yes, a replacement drive is always an option, but it would cost me about five thousand "pennies", which is an expense that shouldn't be necessary as I bought this computer with the understanding that it would be able to read DVDs as-is.

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Hi people,
I'm typing from Brasil, sorry my English.
I have a iMac 21,5" Intel mid 2011 and I need to know if is possible I change the original 500Gb HD for a 512Gb SSD?
I intend to keep the original DVD driver and install the SSD in the same HD place.
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And I will like to know if the 512GB Solid-State Drive Kit for Mac Pro is compatible with iMac.
http://store.apple.com/us/product/MC731ZM/A/512gb-solid-state-drive-kit-for-mac- pro?fnode=5f
What brand and model of SSD do you recommend?
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Carlos Sgrillo
Porto Alegre, RS, Brasil

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