KRQ50/RRD40 problems

[Robert Armstrong]

>Probably not a lot of help, but if that interface is the same physically
>as the DA15 connector on other Philips/LMS CD-ROMs, I have the service 
>manual for the CDD462. It's little more than a schematic and an 
>incomplete parts list (the CDD462 is based on an audio CD-player, and 
>you're expected to have the service manual for that!), but it would 
>contain the interface pinout. Let me know if you want me to dig it out.

  Maybe - I don't suppose it describes any DIP switches on the back of the
drive?  The actual drive in the RRD40 is a Laser Magnetics CM 201, so it's
unlikely that they'd be the same, but you never know.

  I ask because I happened to find this article

	http://h71000.www7.hp.com/wizard/wiz_3914.html

The wizard describes the RRD40-DC as a "slave drive" for use with an
existing KRQ50/RRD40 pair.

  Question - what's the difference between a RRD40-DC and the RRD40-HC?  Is
there a switch or jumper in the drive that makes it a "slave"?

  Ah, if only I had a manual :-)

Bob