19 Dec
2003
19 Dec
'03
11:45 p.m.
Hi All,
I finally got to the RM03 I collected over a year ago from Italy.
I did some cleaning of the main unit, and I have a spare absolute
airfilter which I want to replace with the old one, which brings
me to the first question..., how do I replace it?
Apparently, the whole drive and actuator allembly can be lifted,
but I can't find a lever or bolt to release in order to lift it.
Q2 : is the drive a 'real' SMD drive, or a modified one? there are
2 flatcables running from the back, one wide, and one small.
The reason I'm asking this is that I have heard that CDC made the drives
and they did make those (model 99xx?) as SMD one's as well.
Last question : in the drive is a pack, but I don't have an empty
cover with a handle to place over it in order to remove it.
I do hawever have 4 packs which are having their covers, and was
thinking of using one of those. problem is, how to release it from the
handle?
Any info is appriciated :)
Ed
--
20 Dec
20 Dec
4:34 a.m.
Hi All,
I finally got to the RM03 I collected over a year ago from Italy.
Disclaimer : I've enver seen a real RM03, but I believe it's close to
some CDC drives.
I did some cleaning of the main unit, and I have a spare absolute
airfilter which I want to replace with the old one, which brings
me to the first question..., how do I replace it?
Apparently, the whole drive and actuator allembly can be lifted,
but I can't find a lever or bolt to release in order to lift it.
On some CDC drives, there are 2 large allen-head bolts in the bottom of
the disk housing. Undo those, and lift the chassis from the front. You
may have to swing out the cardcage for it to clear the casing.
Last question : in the drive is a pack, but I
don't have an empty
cover with a handle to place over it in order to remove it.
I do hawever have 4 packs which are having their covers, and was
thinking of using one of those. problem is, how to release it from the
handle?
The disk pack centre spindle (the part with the male screw thread on the
end that screws into the base part of the cover, or into the drive
spindle) is hollow. The drive spindle has a pin in the middle that goes
up iside the pack spinde and releases a ball-bearing catch at the top.
You might be able to do it by pushing something up into the disk pack
spindle.
-tony
8:18 a.m.
Tony Duell wrote:
Indeed, after removing the pack 2 allen bolts did appear and after removing them
I could lift the assembly. This gives me also the change to grease or oil the
ventilator motor as well, as it was rather squeeking...
Yep, that did the trick. how simple some things can be, yet not obvious to
see :)
One more question, what is the best way to clean the heads? Using a cotton
swab with plenty of isopropyl (which I use to clean the RL02 heads), or
is there more care needed for these heads?
Ed
--
Hi All,
I finally got to the RM03 I collected over a year ago from Italy.
Disclaimer : I've enver seen a real RM03, but I believe it's close to
some CDC drives.
I did some cleaning of the main unit, and I have a spare absolute
airfilter which I want to replace with the old one, which brings
me to the first question..., how do I replace it?
Apparently, the whole drive and actuator allembly can be lifted,
but I can't find a lever or bolt to release in order to lift it.
On some CDC drives, there are 2 large allen-head bolts in the bottom of
the disk housing. Undo those, and lift the chassis from the front. You
may have to swing out the cardcage for it to clear the casing.
Last question
: in the drive is a pack, but I don't have an empty
cover with a handle to place over it in order to remove it.
I do hawever have 4 packs which are having their covers, and was
thinking of using one of those. problem is, how to release it from the
handle?
The disk pack centre spindle (the part with the male screw thread on the
end that screws into the base part of the cover, or into the drive
spindle) is hollow. The drive spindle has a pin in the middle that goes
up iside the pack spinde and releases a ball-bearing catch at the top.
You might be able to do it by pushing something up into the disk pack
spindle. 
11:09 a.m.
On Sat, Dec 20, 2003 at 06:34:56PM +0000, Tony Duell wrote:
I've been up to my elbows in real RM03s and CDC 9762s (what they are
based on). They are indeed close, but in my experience, not identical.
I worked a job in 1988 where the boss had me refurbing pallets of DEC
equipment. One task was to attempt to remove the DEC mods from the RM03
to allow us to connect it to a Unibus SMD controller. Even with his
expertise, we were not able to figure out all the things that DEC changed.
Perhaps with proper schematics it would have been trivial, but all we had
at the time was a real 9762 we could pull parts from, and a row of RM03s
to experiment with. ISTR there were some minor differences in the cards
in the internal card cage (not the SMD<->MASSBUS adapter below; that was
100% DEC).
I'm still sure it's possible, but I couldn't begin to describe how to
do it.
-ethan
--
Ethan Dicks, A-130-S Current South Pole Weather at 21-Dec-2003 01:00 Z
South Pole Station
PSC 468 Box 400 Temp -15 F (-26.1 C) Windchill -22.8 F (-30.5 C)
APO AP 96598 Wind 4.7 kts Grid 059 Barometer 693.5 mb (10120. ft)
Ethan.Dicks(a)amanda.spole.gov http://penguincentral.com/penguincentral.html
Hi All,
I finally got to the RM03 I collected over a year ago from Italy.
Disclaimer : I've enver seen a real RM03, but I believe it's close to
some CDC drives.
11:37 p.m.
Ethan Dicks wrote:
snip snip
I've been up to my elbows in real RM03s and CDC 9762s (what they are
based on). They are indeed close, but in my experience, not identical.
I worked a job in 1988 where the boss had me refurbing pallets of DEC
equipment. One task was to attempt to remove the DEC mods from the RM03
to allow us to connect it to a Unibus SMD controller. Even with his
expertise, we were not able to figure out all the things that DEC changed.
Perhaps with proper schematics it would have been trivial, but all we had
at the time was a real 9762 we could pull parts from, and a row of RM03s
to experiment with. ISTR there were some minor differences in the cards
in the internal card cage (not the SMD<->MASSBUS adapter below; that was
100% DEC).
snip snip
Would this mean that I can use the smd<->massbus unit for example with a
a Fujitsu M2321/M2322? In that case, some alternative use for the controller
comes in mind, in case the RM03 doesn't work.
Thanks,
Ed
--
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http://www.groenenberg.net | en neuspeuteraars.
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11:52 p.m.
On Sun, Dec 21, 2003 at 02:37:26PM +0100, Ed wrote:
Would this mean that I can use the smd<->massbus
unit for example with a
a Fujitsu M2321/M2322? In that case, some alternative use for the controller
comes in mind, in case the RM03 doesn't work.
You could try it (I never did), but given how peabrained some of those devices
are, I'm not sure it would work. At the very least, I would expect the hardware
to not smoke, but no guarantees of success.
-ethan
--
Ethan Dicks, A-130-S Current South Pole Weather at 21-Dec-2003 13:50 Z
South Pole Station
PSC 468 Box 400 Temp -15.3 F (-26.3 C) Windchill -26.6 F (-32.6 C)
APO AP 96598 Wind 5.3 kts Grid 066 Barometer 694.2 mb (10096. ft)
Ethan.Dicks(a)amanda.spole.gov http://penguincentral.com/penguincentral.html
21 Dec
21 Dec
4:26 a.m.
Ed writes about using the guts of an RM03:
Would this mean that I can use the smd<->massbus
unit for example with a
a Fujitsu M2321/M2322? In that case, some alternative use for the
controller comes in mind, in case the RM03 doesn't work.
No, since the RM03 drive and drive/adapter interface aren't really SMD.
They use sorta-kinda-almost-but-not-really-SMD. As far as I can tell,
the only reason this was done was to keep DEC customers from using other
SMD drives.
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