开云体育

Usually there are three parts in a NVRAM, 1.SRAM 2.DS1210(or DS121x?) 3. 3V battery This means we can make NVRAM by ourself, HM6116+DS1210+two 1.5V AAA batteries=DS1220Y(2Kx8 NVRAM) one 256K

Has anyone attempted to repair one? If so, what was the outcome? I'm familiar with the EPROM failure repair. I'm really asking about the input and output sections as they are ESD sensitive. Are

I'd have had to wait for my ST replacement NVRAM without the assist from Tom Miller. Wherever did you find a DS1213? Digikey and Mouser don't have them. I doubt that any of the ones on eBay have

Congrats!nice job. After replacing the DS1213 with a new NVRAM in my CSA803 (I replaced one DS1213 only ) I rebooted it 3 times to get rid of the self test failure. 1st time:same err E5322 2nd

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

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

I'm reading the diagnostics manual section for the A5 timebase board. The 8 LEDs, ST0-7 come on at power on and stay on while it runs through the self tests I have J710- J713 set to 0. There is

Re: ROM images, did you check here: http://www.ko4bb.com/getsimple/index.php?id=manuals Search ko4bb for 11801. Bob.

Thanks. It got overlooked among the ridiculous number of 11801C manuals I found listed as 11801 manuals. Breaks over, back to work :-) --------------------------------------------

Hi Reg, I thought this manual had been mentioned before. I meant the last manual listed at tekwiki, http://w140.com/tekwiki/wiki/11801 . Also here:

They should be symmetrical, however checking a 577 that just came in I found U220 pin 9 is actually pin 13, guess you can't trust the gates in the manual :) probably some updates somewhere but I don't

Albert, Where do I find a diagnostics manual for the 11801? Finding *any* manuals at all has been like looking for a unicorn. Days of searching turned up 11801A/B/C documents. But no 11801

All this talk of diodes may be relevant when you get the PSU to start but its dead right? The way I work on these is remove the PSU from the case, remove the IEC power inlet from the case and

Hi Reg, One more remark. With Extended Diagnostics disabled you can (probably) still control the 11801 via GPIB. See for instance my CSA803 repair, message 148037. Albert

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

I have replacements made by ST in transit. As for exiting the Extended Diagnostics, my last post reported that I am not able to do that. I have tried deleting the failing tests, but cannot. I have

Forget my idea,the 3V to VCC of SRAM might be too low.too dangerous! but you can replace the DS1213 with a pin compatible 32k8 SRAM and try it. if it works you will get battery error but you can exit

I have a brand new unopened complete P6450 Data Acquisition Probe including all the multi-colored wires and mini-test clips. I can ship it anywhere in the US for $30. That includes shipping. If

I have an original JAN 1985 Revision of the R7103 Service manual. I can ship it to anyone in the US for $30. That includes the shipping. If interested contact me OFF LIST at dennis at ridesoft dot