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Yes. After I reset the jumpers on the IO board to the default locations it
stops with a T1331. I just verified it to make sure there was no
transposition of digits.

So somehow it is able to tell that the DS1213s are gone. To generate the
E5622 error it has to be able to query the battery status of the DS1213.
I'd guess that the 5 V to the chip is sequenced and it does a read before
enabling the 5 V. I'm sure the explanation is in the datasheet for the
DS1213.

Reg
--------------------------------------------
On Mon, 3/25/19, Albert Otten <aodiversen@...> wrote:

Subject: Re: [TekScopes] 11801 diagnostic help
To: [email protected]
Date: Monday, March 25, 2019, 4:32 AM

Very nice Reg, and very clever of
Tom (that is, I didn't think of it!).
There is nothing special in the PCB. The 11801
can't know that there is a Dallas construction plugged
in except for loss of memory after power down. Now could you
confirm that you saw that specific battery error code T1331?
Must be so.
Albert

This seems to confirm my previous suggestion
that

On Wed, Mar 20, 2019 at 08:30 PM, Mike Dinolfo wrote:

Can you clarify what is "CRC
556"

Hi: CRC 5.56 aerosol. It a highly refined mineral oil, dissolved in naphtha, with liquified (due to the pressure in the can) petroleum gases, that act as the propellant. There is some supposed anti-corrosion woo in there too.
So... basically it's a sprayable oil, that because it is solvated( and so very thin) will flow into, and be drawn into tight places. When the solvent evaporates, the oil (which is thicker) remains. The spray is very flammable. Also, don't inhale it.

It booted!!!!

It recognizes the two SD-22s, knows it is 24 March 2019 though the time is off
by 2.5 hours. Two hours of which are Mountain time and the change in DST. It
reports 43989 hours of on time and 2033 power ups of which I probably did the
last few hundred.

Thank you Tom!

Reg

--------------------------------------------
On Sun, 3/24/19, Tom Miller <tmiller11147@...> wrote:

Subject: Re: [TekScopes] 11801 diagnostic help
To: [email protected]
Date: Sunday, March 24, 2019, 6:20 PM

Good point and that jogged a
memory. Try pulling the ram chips out of
the smartsocket and plugging them directly in.
See if it will fully boot
without the same
error.

Those are *not* 11801 manuals. They are 11801C manuals. I currently have a PDF of the 11801 service manual courtesy of a member of the list and the 11801,11802 & SM11 diagnostics courtesy of TekWiki. I have paper copies of the 11801 user and service manuals in transit.


--------------------------------------------
On Sun, 3/24/19, bobh@... <bobh@...> wrote:

Subject: Re: [TekScopes] 11801 NVRAM
To: [email protected]
Date: Sunday, March 24, 2019, 4:44 PM
Re: ROM images, did you check
here:

Search ko4bb for 11801.
Bob.
On 3/24/2019 7:26 AM, Reginald
Beardsley via Groups.Io wrote:
> I was
able to select a DS1230Y NVRAM package on the TNM5000 and
read U500.? However, it only contained 32 bytes of data.
Everything else was alternating 32 bytes of 00 and FF.
>
> I should note that
when I selected the NVRAM part, the TNM put up a warning to
select the device before inserting the device in the ZIF
which is the opposite of what I did.
>
> Does anyone have images of? U500 and U511
from a CSA803 or 11801 which has the factory cal data?
We'd also need the 200 MHz OXCO measured using a GPSDO
referenced counter and the version of the timebase board
ROMS.? Mine are version 10.1 dated 1991.
>
> Does anyone of the
list know who designed the board?? It's dated 1988.
It they are still alive we might get some help from them.
>
> Is there any
information on the recalibration process?
>
> This needs to be
documented before all of them fail. Twenty odd years ago
there was a detailed description of how to recover a Sun
workstation from a failed NVRAM.? So if you bought a used
system, one of the first things you did was record the
serial number, etc for future reference.
>
> Reg
>
>
>
>

Hi Reg,

You moved the correct jumpers (Fig. 1-1 in the Diagnostics manual). I suppose (just suppose) now that the Exxxx error is too severe. When the battery in the Dallas battery is low, the NVRAM memory chip should still work but lose its content after power off. The corresponding error is T1331. Probably the chip inside the Dallas unit does not function properly anymore, i.e. does not guide the mainframe 5V to the memory chip when mainframe power is present.

The scope should power up normally even without any plugins. Of course many function simply are not available then, but you can see things like instrument options and identification.

Albert


On Sun, Mar 24, 2019 at 04:48 PM, Reginald Beardsley wrote:

Albert Otten wrote:

Another possibility to have the instrument atleast doing something is to
bypass the Self test and
Extended Diagnostic tests by setting jumpers J712 and J713 on the I/O board to
the 0 position. These jumpers are difficult to reach with the board in situ, I
found it easier to remove the board and then change the jumper settings.

The only jumper labeled was J710, so I assumed the number went up went up from
there. J712 and J713 were set to the right, so I moved them to the left,
replaced the board and powered it up.

There was no change in behavior.

In reading the service manual for the 11801 it seemed to indicate that a
sampling head needed to be installed. I tried it with one of my SD-22s
installed, but that had no discernible effect.

I was able to select a DS1230Y NVRAM package on the TNM5000 and read U500. However, it only contained 32 bytes of data. Everything else was alternating 32 bytes of 00 and FF.

I should note that when I selected the NVRAM part, the TNM put up a warning to select the device before inserting the device in the ZIF which is the opposite of what I did.

Does anyone have images of U500 and U511 from a CSA803 or 11801 which has the factory cal data? We'd also need the 200 MHz OXCO measured using a GPSDO referenced counter and the version of the timebase board ROMS. Mine are version 10.1 dated 1991.

Does anyone of the list know who designed the board? It's dated 1988. It they are still alive we might get some help from them.

Is there any information on the recalibration process?

This needs to be documented before all of them fail. Twenty odd years ago there was a detailed description of how to recover a Sun workstation from a failed NVRAM. So if you bought a used system, one of the first things you did was record the serial number, etc for future reference.

Reg

Albert,

Where do I find a diagnostics manual for the 11801?