Yes the oscilloscope are your eyes and ears for electrons…
Marc
> On May 1, 2024, at 11:44 PM, Dominique Carlier wrote:
>
> Hi Marc !
>
> It should be so great if it was just the PSU, everything else is hyper
> overkill in terms of complexity but on the multimeter all the voltages show
>
Hi Marc !
It should be so great if it was just the PSU, everything else is hyper
overkill in terms of complexity but on the multimeter all the voltages
show the correct values, including +15V and -15V (generated from the
+24V and -24V of the power supply).
But is it possible that one of these
Power supply problem?
Marc
> On Apr 30, 2024, at 8:58 AM, Dominique Carlier via cctalk
> wrote:
>
> Hello everyone
>
> I need your help to identify an issue on my Diablo Model 40 Series. I don't
> know where to look, it's so vast !
>
> Here's the problem:
> When RUN is activated, the drive
I also thought about it first, but in the documentation it is clearly
explained that during the startup sequence, the deployment of the heads
is done at the same time as the spin up, during this deployment the
heads are raised, they are normally loaded on disc only after one minute
+- after
On 4/30/24 12:37, Dominique Carlier via cctalk wrote:
Thanks for your response Jon :!
The technical documentation is available on Bitsavers here:
http://www.bitsavers.org/pdf/diablo/disk/model_40/81603_Diablo4xMaint_Apr75.pdf
But also here:
Hi Don !
Good suggestion, these microswitches are used to indicate that the heads
are completely retracted.
Unfortunately, that would have been too simple, both microswitches work
perfectly :-/
On 30/04/2024 19:43, D. Resor wrote:
What is the purpose of the two microswitches seen in the
What is the purpose of the two microswitches seen in the upper right of the
video view?
Could one or both of those be intermittent? Have they been tested for
continuity/intermittence with an analog VOM?
Don Resor
-Original Message-
From: Dominique Carlier via cctalk
Sent:
Thanks for your response Jon :!
The technical documentation is available on Bitsavers here:
http://www.bitsavers.org/pdf/diablo/disk/model_40/81603_Diablo4xMaint_Apr75.pdf
But also here:
https://www.wang2200.org/docs/external/DiabloSeries40DiskDriveFieldLevelMaintenanceGuide.03-0057.pdf
I
On 4/30/24 10:46, Dominique Carlier via cctalk wrote:
Hello everyone
I need your help to identify an issue on my Diablo Model
40 Series. I don't know where to look, it's so vast !
Here's the problem:
When RUN is activated, the drive begins its spin up and
simultaneously deploys the heads
