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The first thing you should try is to reseat the power supply module in the main power supply. This module is similar to a memory module in an old PC, and it plugs into a DIMM socket.

I’ll have to look at the schematic again, as I didn’t notice the dependence (also) of 88V on the 300V supply. HP simplified their ‘scope power supplies subsequently, making one supply the

I have a blank display on my HP8563E. The CRT is fine but I found out that -15 VDC power supply is down (LED on A2 is off). I measured nearly 0 V on TP303 (vs TP301) on A6. Anyone came across the same

Nice! If that is in fact an HP-9000 DIO RAM board, they've already been cloned. A fellow over in .eu did the design, I had a small run of PCBs done and built a few, and eventually got it

Hi Tom, The file is in the RECENT DOWNLOAD list. We have to wait for verification before we can do the download.

Ozan, Thank you for the tips.? My observations: 1. I was able to verify +15VF, +5A and +10UF voltages directly on A7.? I need to get an extender to really dig into it :-( 2. In the system

If the connector is still available, it would not be difficult to make a 1MB or 8MB static RAM board. I did one not too long ago for the Data I/O UNISITE that also uses the MC68000. The original

Am I too stupid to find it or hasn't it been verified yet? I'm excited to see the CLIPs. Tom DG8SAQ

Sorry a correction, by disconnecting the J9P interpanel connector I have disconnected the V33 heater so I could not have had the right voltage out anyway from the -150 supply, regardless I was getting

Hi Try this: simon@... ( simon@... )

Thanks for the information! Yves De : HP-Agilent-Keysight-equipment@groups.io <HP-Agilent-Keysight-equipment@groups.io> De la part de Hans Eriksen via groups.io Envoyé : 2 mai 2024 14:50 ? :

I haven't looked up the pinout because I really need to get to sleep, but from the photo this board looks *exactly* like a DIO bus RAM board for an HP-9000 series 300 computer.

Here is a collection of data I have on the Hp 3852a expansion port and memory modules : Its a Dram module opposed to the SRAM internal memory The memory controller used is National DP8409A memory

Have you got an email address for him? All I get is a log in screen with no option to request access. Thanks, Steve

Very interesting i didn't realize some heaters are run in series. I checked the cold resistance of the 88V heaters and is 126 ohm which divided by 14 heaters makes 9 ohm, about right for a single 6.3

The EMC version of the E440xB has monochrome as standard, with an option for color The "normal" versions has color as standardThe colors are gone due to defective backlight?Replace it with two LED

Hi, Out of curiosity, does anyone know if the E440xB series has an option for a monochrome display. I have seen several photos where you see an amber-colored monochrome screen. I thought

Hi John You are absolutely right! I am also no longer sure what we are talking about…The X series start with CXA and so far stop at UXA.They all have a lot in common-especially software

Are we talking about the EXA version, the cheapest model of the series? Not EXT? Until someone has real time S/A via FFT option in these, they don't jump out at me. I have a Rigol now at home that

One of the best (free) manual sites that I don't see mentioned is Dr. Simon Schr?dle's site: http://www.schroedle.de/Manuals/ Many are of higher than normal quality - there is a login but all you