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Old 8th Dec 2017, 11:02 am   #1
Ksdavies
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Default Gould 1604 plotter

Does anyone know how to get to/ change the pens on a Gould 1604 DSO
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Old 9th Dec 2017, 12:39 pm   #2
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Default Re: Gould 1604 plotter

Open the lid where the paper goes.
Press the "pen change" button. (the pen carrier should move to the right).
Pull the lever marked "eject" (this should flip up the end of the the topmost pen).
Fit a new pen.
Repeatedly pressing the "pen change" button will index the carrier so you can change all four pens.
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Old 11th Dec 2017, 7:54 pm   #3
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Default Re: Gould 1604 plotter

There is no reference to any pens are indication of where the pens are. I am thinking there must be something missing as there is no indication of any printing mechanism. I've removed all the covers and the print unit but still can't see any signs of pens. In the earlier machines did they use the same type of priint similar to the early pc printers which used a spark on the paper to print?
I've attached some photos.
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Old 12th Dec 2017, 8:03 pm   #4
factory
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Default Re: Gould 1604 plotter

I found a very low resolution picture showing the inside of the plotter on the web, I take it yours looks different to this?

Or could it be an updated version with a thermal printer?

David
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Old 12th Dec 2017, 8:18 pm   #5
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Default Re: Gould 1604 plotter

My work 1624 (just a 1604 with differential inputs add-on), uses a thermal printer. It looks just like the one in your 1604.
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Old 12th Dec 2017, 8:39 pm   #6
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Default Re: Gould 1604 plotter

Thanks for all your help, I'mjust in the process of replacing the elect. capacitors in the osciloscope but I'm thinking it must be a thermal printer like you say.
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Old 12th Dec 2017, 8:51 pm   #7
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Default Re: Gould 1604 plotter

I'm sure they just unclip from the drum. I don't remember how to rotate it to the next colour though.
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Old 12th Dec 2017, 9:18 pm   #8
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Default Re: Gould 1604 plotter

You need to have the printer powered on, lift the lid and then press the blue "change pen" button. This will bring the carriage into the change position and you can use the tab to lift the top pen. Once you've changed that, the "change pen" button selects the next pen and you repeat.

There's a place in Germany where you can buy new pens. If you need it, I'll find the address for you.
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Old 17th Dec 2017, 8:29 pm   #9
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Default Re: Gould 1604 plotter

Thanks but there is no change pen button or visible carriage. I think now that it is a thermal printer as described earlier by dazzlevision!
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Old 20th Dec 2017, 4:58 pm   #10
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Default Re: Gould 1604 plotter

The Gould 1600 manual says:

4-color Plotter for 1602 + 1604 are option

The 1620 series has a thermal printer

But the interface is very simple and Gould made later a Firmware update,
so I think it's possible to exchange printer vs plotter.

Your device looks like a thermal printer (only one head)
You can also check the paper, if its a thermal paper.

--
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Old 22nd Dec 2017, 10:53 pm   #11
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Default Re: Gould 1604 plotter

Quote:
Originally Posted by mole42uk View Post
There's a place in Germany where you can buy new pens. If you need it, I'll find the address for you.
I've been trying for ages to obtain pens for the Gould 400 series DSO multi-colour plotter.
These were miniature felt-tip pens supplied in a tube.
I remember you could index round the pen holder and change them one at a time.

If you can post the address of the pen supplier ... They may be able to supply the pens I need.
Here's hoping !
Thanks, if you can.
John
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Old 23rd Dec 2017, 6:33 am   #12
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Default Re: Gould 1604 plotter

Back in June 2016 I posted this:

If, like me, you've searched high & low for replacement pens for the plotters used in Gould 'scopes (and other old equipment), look no more. These fit perfectly:

http://www.lass-shop.de/epages/63686...US%20017.01%22

They will ship to England and they do speak a little English, but a web order will work.
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Old 26th Dec 2017, 10:10 pm   #13
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Default Re: Gould 1604 plotter

Re: Gould 1602/04

I've just obtained a 1602 as well as my 1604 but it had very bad focus issues so I changed the 10uF caps on the power supply, as mentioned in a previous posting, and the results were very good. I switched off the 1602 and carried on changing the caps on the 1604.

Later I switched on the 1602 and got nothing just as though a fuse had blown. I tested the mains fuse and also the two on the power supply board and all were OK. It states in the repair manual that there is a fast blow fuse on the rear panel but I can't find one. Any help would be appreciated.
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Old 30th Dec 2017, 6:17 pm   #14
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Default Re: Gould 1604 plotter

Quote:
Originally Posted by mole42uk View Post
Back in June 2016 I posted this:

If, like me, you've searched high & low for replacement pens for the plotters used in Gould 'scopes (and other old equipment), look no more. These fit perfectly:

http://www.lass-shop.de/epages/63686...US%20017.01%22

They will ship to England and they do speak a little English, but a web order will work.
Thanks mole42uk.
Those look ideal to me.
John
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Old 24th Jan 2018, 5:32 pm   #15
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Question Re: Gould 1604 plotter

Where do you get the paper rolls?
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Old 24th Jan 2018, 6:27 pm   #16
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Default Re: Gould 1604 plotter

I got mine from one of the on-line stationery suppliers. Just search for the proper width.
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Old 26th Jan 2018, 12:18 am   #17
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Default Re: Gould 1604 plotter

Thanks
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Old 26th Jan 2018, 5:22 pm   #18
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Default Re: Gould 1604 plotter

Quote:
Originally Posted by Ksdavies View Post
Where do you get the paper rolls?
Hi I just read your query. The paper rolls for the thermal printer are the same as those used for the French "minitel"...I have plenty if you need some.

Best regards, Terence.
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Old 27th Jan 2018, 8:57 pm   #19
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Default Re: Gould 1604 plotter

Thanks but I have some now. I'm now waiting for information in English about the pens. I have contacted the recommended supplier but it seems they have a minimum order price which is just about 1 over the price of a set of pens. I don't want to buy two sets of pens so I'm waiting for a guide as to what will make the price up to the minimum
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Old 28th Jan 2018, 9:54 am   #20
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Default Re: Gould 1604 plotter

Quote:
Originally Posted by lionel1926 View Post
Hi I just read your query. The paper rolls for the thermal printer are the same as those used for the French "minitel"...I have plenty if you need some.
The 1604 plotter isn't a thermal printer. It uses plain paper rolls. Well, mine does anyway - I don't know of a thermal colour printer.
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