22 Mar
2008
22 Mar
'08
9:46 a.m.
Hello,
Can abyone help me with the partnumber or partnumbers
of a TC11 controller (which is for the TU-56 tapedrives).
Thanks,
Ed
22 Mar
22 Mar
10:20 a.m.
New subject: Sirius-1 re-assembly
Hi folks,
I have a slight problem here.... Several months ago, I disassembled my
Sirius-1 to try to ascertain why the hard-disk was not working. I've not
actually got any further with that yet, so I decided today to re-assemble
the machine, a) because I was fed up of the bits all lying around getting in
the way, and b) because I was worried that I might lose some of the screws,
etc.
Now, the problem... There's a whole stack of connectors which come out of
the FDD drive, and hook into a big long set of pins on the board which sits
over the top of the disk drives. I did make a note of which went where, but
that's on my "normal" computer, which is currently in Spain (unlike me)...
So - does anyone know what order the B: drive connectors should be plugged
into on the drive board?
The connectors are marked thus (switch to a fixed-pitch font for clarity):
MX-9 (2 off - I shall call them MX-9a and MX-9b):
MX-9a has 5 pins & 4 wires coloured Yellow, Green, Red, Blue
MX-9b has 4 pins & 4 wires coloured Black, Green, Brown, Red
MX-3 has 3 pins & 3 white wires
MX-19 has 4 pins & 2 white wires
MX-8 has 4 pins & 2 white wires
MX-11 has 4 pins & 4 white wires
Note: Where a connector is not fully populated, all wires are in LH-most
positions.
On the circuit board, the positions are marked out for the connectors thus:
B21 aka J8 has 5 pins (MX-9a)
B11 aka J9 has 4 pins (MX-9b)
B9 aka J10 has 4 pins
B22 aka J11 has 3 pins (MX-3)
B8 aka J12 has 4 pins
B12 aka J13 has 5 pins
I've guessed at MX-9a & b based on the no. of pins & length of wires (MX-9b
won't stretch much further than position B11/J9); and MX-3 seems obvious
because it's the only 3-pin connector. The others, however, are a mystery
without my original reference...
So, Q is: Does anyone have a Sirius-1 they could pop the top off to have a
look at what order the connectors are in?
Also... And this one I *didn't* make a note of (more fool me); next to the
power brick are 2 MOLEX connectors going to the HDD. Both plugs (HDD side)
have 4 wires coming out - one has 4 black wires, the other 4 white wires. On
the PSU side, one socket has four black wires, the other has 2 black & one
white wire, and a gap. Any idea which goes where? I'm guessing you'd need a
hard-drive equipped Sirius to determine that one...
Many thanks in advance!
Cheers,
Ade.
No virus found in this outgoing message.
Checked by AVG.
Version: 7.5.519 / Virus Database: 269.21.8/1338 - Release Date: 21/03/2008
17:52
5:03 p.m.
New subject: Sirius-1 re-assembly
Hi folks,
I have a slight problem here.... Several months ago, I disassembled my
Sirius-1 to try to ascertain why the hard-disk was not working. I've not
actually got any further with that yet, so I decided today to re-assemble
the machine, a) because I was fed up of the bits all lying around getting in
the way, and b) because I was worried that I might lose some of the screws,
etc.
Now, the problem... There's a whole stack of connectors which come out of
the FDD drive, and hook into a big long set of pins on the board which sits
over the top of the disk drives. I did make a note of which went where, but
that's on my "normal" computer, which is currently in Spain (unlike me)...
So - does anyone know what order the B: drive connectors should be plugged
into on the drive board?
The connectors are marked thus (switch to a fixed-pitch font for clarity):
MX-9 (2 off - I shall call them MX-9a and MX-9b):
MX-9a has 5 pins & 4 wires coloured Yellow, Green, Red, Blue
MX-9b has 4 pins & 4 wires coloured Black, Green, Brown, Red
MX-3 has 3 pins & 3 white wires
MX-19 has 4 pins & 2 white wires
MX-8 has 4 pins & 2 white wires
MX-11 has 4 pins & 4 white wires
Are you sure you're quoting the right numbers here? The numbers that
matter are the ones stamped in black on the connector housings. I my
Sirius (twin floppy model), the connectors are :
9 (4 pins, 2 white wires) to the front panel LED
21 (5 pins, Y, Gn, R, Bu wires to the spindle motor)
12 (4 pins, Bk, Gn, Br, R wires to the stepper)
8 (4 pins, 4 white wires to the write protect and door open switches)
OR 8 (4 pins, 2 white wires to the write protect switch and 22 (3 pins,
3 white wires) to the door switch)
11 (4 white wires to the track 0 sensor
Now : the connectors on the PCB are :
J6 (A11) - 11 of drive A, track 0
J9 (B11) - 11 of drive B, track 0
J5 (A9) - 9 of deive A, LED
J10 (B9) - 9 of drive B, LED
J3 (A8) - 8 of drive A , write protect
J4 (A22) - 22 of drive A, door switch (if used)
J12 (B8) - 8 of drive B, write protect
J11 (B22) - 22 of drive B, door switch (if used)
J2 (A12) - 12 of drive A, stepper
J13 (B12) - 12 of drive B, stepper
J7 (A21) - 21 of drive A, spindle motor
J8 (B21) - 21 of drive B, spindle motor
Note: Where a connector is not fully populated, all wires are in LH-most
positions.
On the circuit board, the positions are marked out for the connectors thus:
B21 aka J8 has 5 pins (MX-9a)
Spindle mortor
B11 aka J9 has 4 pins (MX-9b)
Track 0 sensor
B9 aka J10 has 4 pins
Front panel LED
B22 aka J11 has 3 pins (MX-3)
Door swtich
B8 aka J12 has 4 pins
Write protect switch
B12 aka J13 has 5 pins
Head stepper. The plug
has 5 pins. One of them is conencted to the +12V
line (find this on the +ve end of C28, for example), and that's the one
that's not conencted to the stepper motor.
I've guessed at MX-9a & b based on the no. of pins & length of wires (MX-9b
won't stretch much further than position B11/J9); and MX-3 seems obvious
I think you've got one of thsoe wrong...
because it's the only 3-pin connector. The others,
however, are a mystery
without my original reference...
I'd trace the wiring to the various bits on the chassis and plug in as above.
So, Q is: Does anyone have a Sirius-1 they could pop the top off to have a
look at what order the connectors are in?
DOn't need to, I've got my schematics to hand...
Also... And this one I *didn't* make a note of (more fool me); next to the
power brick are 2 MOLEX connectors going to the HDD. Both plugs (HDD side)
have 4 wires coming out - one has 4 black wires, the other 4 white wires. On
the PSU side, one socket has four black wires, the other has 2 black & one
white wire, and a gap. Any idea which goes where? I'm guessing you'd need a
hard-drive equipped Sirius to determine that one...
Alas I can't help you there. I only have a floppy drive machine.
-tony
10:29 p.m.
New subject: Sirius-1 re-assembly
Tony Duell wrote:
I have no black numbers printed on the connectors - only the MX- numbers
(which are moulded), and another number (starts with a 4) which is the same
on all the connectors.
I'll have another look tomorrow (er, today I mean), but I'm 99% sure there's
nothing on them.
I'll certainly try... But I'm not willing to re-power it until I've sorted
the power plugs...
Cheers,
Ade.
No virus found in this outgoing message.
Checked by AVG.
Version: 7.5.519 / Virus Database: 269.21.8/1339 - Release Date: 22/03/2008
16:43
MX-9 (2 off - I shall call them MX-9a and MX-9b):
MX-9a has 5 pins & 4 wires coloured Yellow, Green, Red, Blue
MX-9b has 4 pins & 4 wires coloured Black, Green, Brown, Red
MX-3 has 3 pins & 3 white wires
MX-19 has 4 pins & 2 white wires
MX-8 has 4 pins & 2 white wires
MX-11 has 4 pins & 4 white wires
Are you sure you're quoting the right numbers here? The numbers
that matter are the ones stamped in black on the connector
housings. I my Sirius (twin floppy model), the connectors are : (list of stuff cut, ta)
Hmm, I may have to take the drive carrier out again to see if I've got one
of the wires tangled. From what you're saying, one of the coloured batch
belongs on B21 (J8); and it'll be a real stretch to make it reach at the
moment.
Now, from your list, J13 (B12) (5-pin connection printed on the circuit
board) should have connector 12 in it - which has only 4 pins.... Is the
unconnected pin on the LH or RH end?
because
it's the only 3-pin connector. The others, however, are a
mystery without my original reference...
I'd trace the wiring to the various bits on the chassis and plug
in as above.
23 Mar
23 Mar
3:36 p.m.
New subject: Sirius-1 re-assembly
Are you sure
you're quoting the right numbers here? The numbers
that matter are the ones stamped in black on the connector
housings. I my Sirius (twin floppy model), the connectors are :
I have no black numbers printed on the connectors - only the MX- numbers
(which are moulded), and another number (starts with a 4) which is the same
on all the connectors.
I'll have another look tomorrow (er, today I mean), but I'm 99% sure there's
nothing on them.
Yes. The connector numbering is actually the same as the connectors in a
Tandon TM100, and number 21 is the psindle motor. It'll be 4 coloured
wires (2 of the motor, 2 for the tacho) that go to that component.
(list of stuff cut, ta)
Hmm, I may have to take the drive carrier out again to see if I've got one
of the wires tangled. From what you're saying, one of the coloured batch
belongs on B21 (J8); and it'll be a real stretch to make it reach at the
moment.
Now, from your list, J13 (B12) (5-pin connection printed on the circuit
board) should have connector 12 in it - which has only 4 pins.... Is the
unconnected pin on the LH or RH end?
I don't know, but I explained it last night. Sirius used several
different drive mechanisms in these machines, or at least had the
capability to do so. The stepper motor is either 4 windings with a common
connection (5 wires) or 2 separate windings (4 wires). The board can
handle either (unlike, BTW, the Commodore 8050 which is of course
somwhat similar, in that unit, there are 2 different 'analogue boards'
for the 2 types of stepper motor). Anyway. one end pin on the PCB-mounted
plug is linked to the +12V rail. That's the one you _don't use_ if you
have a 4-wire motor.
because
it's the only 3-pin connector. The others, however, are a
mystery without my original reference...
I'd trace the wiring to the various bits on the chassis and plug
in as above.
4:06 p.m.
New subject: Sirius-1 re-assembly
Tony Duell wrote:
Joy :)
OK. Well, that's the drive carrier coming out again then, and both the
boards back off (damn). Are those schematics you talked about readily
available for download anywhere (ie in the public domain), or are they ones
you made yourself?
I have no
black numbers printed on the connectors - only the MX-
numbers (which are moulded), and another number (starts with a 4)
which is the same on all the connectors.
Oh dear. You've got wome wiring to trace... Hmm, I may
have to take the drive carrier out again to see if I've got
one of the wires tangled. From what you're saying, one of the coloured
batch belongs on B21 (J8); and it'll be a real stretch to make it
reach at the moment.
Yes. The connector numbering is actually the same as the connectors in
a Tandon TM100, and number 21 is the psindle motor. It'll be 4 coloured
wires (2 of the motor, 2 for the tacho) that go to that component. Now, from your
list, J13 (B12) (5-pin connection printed on the
circuit board) should have connector 12 in it - which has only 4
pins.... Is the unconnected pin on the LH or RH end?
I don't know, but I explained it last night. Sirius used several different drive mechanisms in these machines, or at least had
the capability to do
so. The stepper motor is either 4 windings with a common connection (5
wires) or 2 separate windings (4 wires). The board can handle either
(unlike,
BTW, the Commodore 8050 which is of course somwhat
similar, in that unit,
there are 2 different 'analogue boards' for the 2 types of stepper motor).
Anyway. one end pin on the PCB-mounted plug is linked
to the +12V rail.
That's the one you _don't use_ if you have a 4-wire motor.
OK, so I just need to find that 12v line & avoid it - gotcha.
> I'll certainly try... But I'm not willing
to re-power it until I've
> sorted the power plugs...
Err, can't you just trace the grounds, +5V, etch
on the connectors
to see what would make sense?
Yep, I guess so... Just need to dissasemble it all again. Still that's no
problem now I know how it all comes apart & goes together.
Thanks again,
Ade.
No virus found in this outgoing message.
Checked by AVG.
Version: 7.5.519 / Virus Database: 269.21.8/1339 - Release Date: 22/03/2008
16:43
5:01 p.m.
New subject: Sirius-1 re-assembly
Tony Duell wrote:
Joy :)
Well, you don't need to trace out the detailed wiring, only which plug
goes to the track 0 sensor, which to the frontpanel LED, and so on.
I have no
black numbers printed on the connectors - only the MX-
numbers (which are moulded), and another number (starts with a 4)
which is the same on all the connectors.
Oh dear. You've got wome wiring to trace... Hmm, I
may have to take the drive carrier out again to see if I've got
one of the wires tangled. From what you're saying, one of the coloured
batch belongs on B21 (J8); and it'll be a real stretch to make it
reach at the moment.
Yes. The connector numbering is actually the same as the connectors in
a Tandon TM100, and number 21 is the psindle motor. It'll be 4 coloured
wires (2 of the motor, 2 for the tacho) that go to that component. Now, from
your list, J13 (B12) (5-pin connection printed on the
circuit board) should have connector 12 in it - which has only 4
pins.... Is the unconnected pin on the LH or RH end?
I don't know, but I explained it last night. Sirius used several different drive mechanisms in these machines, or at least
had the capability to do
so. The stepper motor is either 4 windings with a common connection (5
wires) or 2 separate windings (4 wires). The board can handle either
(unlike,
> BTW, the Commodore 8050 which is of course somwhat similar, in that unit,
> there are 2 different 'analogue boards' for the 2 types of stepper motor).
Anyway. one end pin on the PCB-mounted plug is
linked to the +12V rail.
That's the one you _don't use_ if you have a 4-wire motor.
OK, so I just need to find that 12v line & avoid it - gotcha. > I'll certainly try... But I'm not
willing to re-power it until I've
> sorted the power plugs...
Err, can't you just trace the grounds, +5V,
etch on the connectors
to see what would make sense?
Yep, I guess so... Just need to dissasemble it all again. Still that's no
problem now I know how it all comes apart & goes together.
24 Mar
24 Mar
6 a.m.
New subject: Sirius-1 re-assembly
Tony Duell wrote:
Well, you don't need to trace out the detailed
wiring, only which
plug goes to the track 0 sensor, which to the frontpanel LED, and so on.
The good news is - I was wrong: There *are* black numbers printed on the
connectors :) I'm a bit nonplussed (not to mention embarrassed) that I
didn't spot them earlier...
So, I shall use your earlier info to place them correctly - thanks!
I've still got to trace the power leads, though, so that's the first job.
Cheers,
Ade.
No virus found in this outgoing message.
Checked by AVG.
Version: 7.5.519 / Virus Database: 269.21.8/1340 - Release Date: 23/03/2008
18:50
6:28 p.m.
New subject: Sirius-1 re-assembly
The good news is - I was wrong: There *are* black
numbers printed on the
connectors :) I'm a bit nonplussed (not to mention embarrassed) that I
didn't spot them earlier...
IIRC, those connectors go on with the numbers on top, away from the PCB
-tony
5964
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