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Re: HP7004B X-Y plotter schematic

 

Thanks Bruce, I will do that with those slide wire resistors. On the main pcb there are two brown blocks, one of these is badly burnt, if they are power resistors as I suspect it is probably still ok, this is another reason I was looking for the schematic.?
Cheers Steve

On Sat, 17 Oct 2020, 12:50 pm Bruce, <bruce@...> wrote:

If fit is like the plotters I used in college, there are wires that?
the carriage slides along to sense its position - clean them?
carefully. The symptom is "vibrating" or spastic motion of the x r y?
carriage.? The other possible problem if it is vibrating could be the?
damping adjustments.
Cheers!

Bruce
? oting Steve Dench <sjdench48@...>:

> Hi, would anyone have a schematic for the HP7004B plotter, I went to?
> use it the other day to do some plots from my 141T and it no longer?
> wants to play the game. I checked all the electrolytic capacitors?
> (considering its age) and replaced some to no avail, all I managed?
> to do was introduce another fault, pen solenoid no longer works.?
> Original fault was X very unstable. All that I can find by searching?
> the internet was a user/operator manual.
> Thanks Steve.
>
>
>








Re: HP7004B X-Y plotter schematic

 

If fit is like the plotters I used in college, there are wires that the carriage slides along to sense its position - clean them carefully. The symptom is "vibrating" or spastic motion of the x r y carriage. The other possible problem if it is vibrating could be the damping adjustments.
Cheers!

Bruce
oting Steve Dench <sjdench48@...>:

Hi, would anyone have a schematic for the HP7004B plotter, I went to use it the other day to do some plots from my 141T and it no longer wants to play the game. I checked all the electrolytic capacitors (considering its age) and replaced some to no avail, all I managed to do was introduce another fault, pen solenoid no longer works. Original fault was X very unstable. All that I can find by searching the internet was a user/operator manual.
Thanks Steve.
OT: what are these connectors?

 

Can anyone identify the connectors described in the attached picture? Those Cannon and Dage part numbers are not showing up for me. Unfortunately, that's the only picture and data that I have.
Here's what I know:
The device is a CIA "bug" transmitter, circa 1960. RF signal is in the range of 55 to 81 MC.
Based on the device's overall dimensions, the body diameter of J2 is about 7mm, while J1 is about 6mm.
They might be a bayonet type, like a BNC, but smaller (and two different sizes).
The power connector is not shown in the picture - it's on the end of a cable on the left side.

Thanks,
Pete
HP7004B X-Y plotter schematic

 

Hi, would anyone have a schematic for the HP7004B plotter, I went to use it the other day to do some plots from my 141T and it no longer wants to play the game. I checked all the electrolytic capacitors (considering its age) and replaced some to no avail, all I managed to do was introduce another fault, pen solenoid no longer works. Original fault was X very unstable. All that I can find by searching the internet was a user/operator manual.
Thanks Steve.
Re: Agilent 54831M

 

On Fri, Oct 16, 2020 at 03:52 PM, Bostonman wrote:
Keep in mind, this booting issue began before I entered BIOS, however, since the issue began, I've changed the boot order several times in hopes to solve the issue.
Sorry, haven't read all messages in this thread, but did you get your device with these messages showing?
In that case it might come from a networked environment, so it is possible the network interface has the PXE bootrom installed.
In that case you need to remove that ROM from the network interface, or there may be a jumper/dipswitch to enable/disable network boot on the network interface.
If is has a PC like motherboard, you might even (temporarily) remove the network interface.

If your machine was working normally (I mean booting from disk like it should), and it stopped booting from disk, there must be something else wrong with your replacement disk, like the bootpartition not being active, etc.
There are tools, like?diskpart from Easy?Recovery,?that can do that for you.?

Wish I could help you more,

Leo
Re: HP 5420A/B and HP5423A Signal / Structural Analyzers

 

Has any progress been made on this project? I have a 5423A system, it would be a hoot to have it running.
Re: Agilent 54831M

Bostonman
 

I haven't looked for other settings such as Network booting or whatever the term(s) are that I found when searching for this issue, however, I know the boot order is/was for the hard drive.

The 3.5" floppy and CD ROM are disconnected, so I believe I eliminated them from the boot sequence and just had the hard drive. The boot options include several hard drive and USB numbers I think. Maybe HDD1, HDD2, USB-X....

Keep in mind, this booting issue began before I entered BIOS, however, since the issue began, I've changed the boot order several times in hopes to solve the issue.
Re: Agilent 54831M

 

The PXE messages are related to a failed Network boot. (People would call this Pixie boot)

Usually in a bios you can set the boot order:

You want floppy ( if available) first,
CD next ( like in a normal PC),
then harddisk,
and last network.

Older Old school PC's would try to always boot from a network, as soon as the PXE ROM was inserted in the network card.
In that case the bios settings would not affect boot order, you would need to remove the network boot ROM first to boot from bios devices.

Remember, this was the case with "real" PC's, not sure how this relates to your machine.

Good luck, stay safe,

Leo
Re: Agilent 54831M

 

The WinScopes tend not to be very highly regarded..

-Dave

On 10/15/20 9:32 PM, Bruce wrote:
Doesn't ANYONE in this group have a copy of the system disks?? Once you can boot from anything, things get a lot easier.
Quoting Bostonman <bostonman73@...>:

I was able to burn the image.

First I tried burning it onto an SSD connected to the rear USB through an adapter. Upon powering, the scope seemed to freeze unless I hit 'tab' to bypass the boot screen. At this point I was able to tell BIOS to boot off the USB (I tried all the ones available) and it wouldn't boot.

Today I tried burning the image to a 3.5" IDE. I connected it to the IDE 44-pin cable and powered the drive via an external supply.

In both cases I got the same messages:

PXE-E61: Media test failure, check cable
PXE-M0F: Exiting Intel PXE ROM

Intel (R) Boot Agent Version 4.0.14
PKE-E61: Media test failure, check cable
PXE-M0F: Exiting Intel PXE ROM
DISK BOOT FAILURE, INSERT SYSTEM DISK AND PRESS ENTER

I'll try turning off something related to PKE in the BIOS, but I'm uncertain why I'm getting this error message. It seems the system isn't seeing the drive, but I've tried the original drive, the SSD, and USB. Also, this issue began after I opened the cover and poked at the cheap hard drive (3.5" to 2.5") adapter; I never tinkered with the BIOS.


--
Dave McGuire, AK4HZ
New Kensington, PA
Re: Agilent 54831M

 

Doesn't ANYONE in this group have a copy of the system disks? Once you can boot from anything, things get a lot easier.


Quoting Bostonman <bostonman73@...>:

I was able to burn the image.

First I tried burning it onto an SSD connected to the rear USB through an adapter. Upon powering, the scope seemed to freeze unless I hit 'tab' to bypass the boot screen. At this point I was able to tell BIOS to boot off the USB (I tried all the ones available) and it wouldn't boot.

Today I tried burning the image to a 3.5" IDE. I connected it to the IDE 44-pin cable and powered the drive via an external supply.

In both cases I got the same messages:

PXE-E61: Media test failure, check cable
PXE-M0F: Exiting Intel PXE ROM

Intel (R) Boot Agent Version 4.0.14
PKE-E61: Media test failure, check cable
PXE-M0F: Exiting Intel PXE ROM
DISK BOOT FAILURE, INSERT SYSTEM DISK AND PRESS ENTER

I'll try turning off something related to PKE in the BIOS, but I'm uncertain why I'm getting this error message. It seems the system isn't seeing the drive, but I've tried the original drive, the SSD, and USB. Also, this issue began after I opened the cover and poked at the cheap hard drive (3.5" to 2.5") adapter; I never tinkered with the BIOS.
Re: Agilent 54831M

Bostonman
 

I was able to burn the image.

First I tried burning it onto an SSD connected to the rear USB through an adapter. Upon powering, the scope seemed to freeze unless I hit 'tab' to bypass the boot screen. At this point I was able to tell BIOS to boot off the USB (I tried all the ones available) and it wouldn't boot.

Today I tried burning the image to a 3.5" IDE. I connected it to the IDE 44-pin cable and powered the drive via an external supply.

In both cases I got the same messages:

PXE-E61: Media test failure, check cable
PXE-M0F: Exiting Intel PXE ROM

Intel (R) Boot Agent Version 4.0.14
PKE-E61: Media test failure, check cable
PXE-M0F: Exiting Intel PXE ROM
DISK BOOT FAILURE, INSERT SYSTEM DISK AND PRESS ENTER

I'll try turning off something related to PKE in the BIOS, but I'm uncertain why I'm getting this error message. It seems the system isn't seeing the drive, but I've tried the original drive, the SSD, and USB. Also, this issue began after I opened the cover and poked at the cheap hard drive (3.5" to 2.5") adapter; I never tinkered with the BIOS.
Re: Clearing out some stuff. Series 200/300 monitors,umatic vid tape decks, printers

 

Noel,
What information on which series 200/300 are you looking for?
I need to know the model numbers.
George
Re: Clearing out some stuff. Series 200/300 monitors,umatic vid tape decks, printers

David B
 

I think the power supplies in most of those things were purchased from third party suppliers so information to repair them is scarce, even inside of HP at the time.? You may be on your own.? Try to find a parted out unit for parts.? Not sure I have anything like that.
Re: Clearing out some stuff. Series 200/300 monitors,umatic vid tape decks, printers

 

David,
From you photos I see you used a display from a 9826A.? Do you have the 9826A?
If so, I would be interested in the unit.

Also, for anyone else out there.? I have interest in acquiring a few 9826A workstations.

Thanks,
George Hnatiuk
Re: Clearing out some stuff. Series 200/300 monitors,umatic vid tape decks, printers

 

HI,

Do you have any circuit information about the series 200/300 controllers?

Mine suffered a power supply failure but before that the internal display had lock issues.

regards Noel (Australia)
IBASIC for E1301?

 

Has anyone archived the IBASIC ROMs for the E1301?

-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA
Re: HP 6012B power supply (1000W switcher)

 

Martin:
Interesting. Definite birdies , if I am reading you rcvr correctly.
All the way up to 4 MHz? Wow!
Now you can play with your near field probes and find out where it is coming from maybe.
Thank You

Chuck: sounds like a good idea. Better than my O scope probe!
Wally
Re: HP8640B fan

 

¿ªÔÆÌåÓý

Same as my 8640B and SM 08640-90186 covering S/N 1609A through?1802A?from April?'78 and change sheets covering?1810A through?2031A from June '80.


I've heard it called three phase but a closer look shows it is really four phase. ?If mine ever goes, I'll put in a 12VDC fan?on?LM317 wired between +10 and -5.2 similar to late production.


Dave Wise


08640-90215 covers S/N 2520A through 2923A (May '91).

08640-90017 covers S/N 1229A through 1324A (Jan '74).


Does anyone have manuals covering the gaps?

From: [email protected] <[email protected]> on behalf of Raymond Domp Frank via groups.io <hewpatek@...>
Sent: Wednesday, October 14, 2020 9:30 AM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP8640B fan
?
Here's the circuit in my 8640A (yes, -A) SM 08640-90114 covering S/N 1602A and 1624U from October '76.

Raymond

Re: HP8640B fan

 

Here's the circuit in my 8640A (yes, -A) SM 08640-90114 covering S/N 1602A and 1624U from October '76.

Raymond

8640A_274.pdf
8640A_274.pdf

Agilent HP35670A

 

Dear Group - Has anyone any experience obtaining and installing Option ? Looking to Install Option 1D2 Sweep Sine Measurements and has any member got this ?

??????? Regards Marc
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