First post, by vejvycz
Hi, I'd like some advice here. I have this board LEANORD C 1792D with a processor 286, it is a board to the ISA slot and so it requires an ISA board, which I made and it is verified that it works. However, when testing the LEANORD board only with the graphics and keyboard connected, there is no video signal on the monitor. I didn't find anything on this board on google, I don't know if, for example, all ram slots must be fitted, or maybe connect a battery somewhere, etc. It would help me a lot if someone could find a manual at home and maybe other information, I'd like a CPU board 286 launched.
Thank you.
https://uloz.to/file/WjTUZTcoUvaY/leanord-c-1 … HH1rQWcqGxmLj==
https://uloz.to/file/CD65jF90R8y9/leonard-zip … USvLJkyHQL0MN==
Diplej post:
https://uloz.to/file/WlQKTTEUoTlW/img-0620-mp … TAlAaR4oGD2Lt==
https://uloz.to/file/mIU1ivDjvFAw/img-0618-mo … UO1rx9jrQSwAt==
https://uloz.to/file/wormoD3d44Il/img-0619-mp … TDgGHIDqmZ3Mt==
So I played with it a bit. It is not possible to read the FW of the three eeproms under each other perfectly, because the programmer reads it probably too fast and the eeproms are very slow ....
The second thing I found out where to connect the battery and identified the correct polarity and found the right crystal and IC where it should be on leg 14 (positive voltage) and on leg number 7 should be GND (ground), there was a voltage for a while, but when I went about a while later to measure the battery, so the voltage was only 2.42V (I used cr2025 and the classic diode 1N4148, there was a slight loss of voltage behind the diode, but it was nothing extreme, the diode is there because there was probably an original battery and my point is not to put voltage into the classic battery, because otherwise the battery could explode. The display posts, but the boot doesn't get very far ....
Do you think it will go live at all ??? I'd like it to work, but it's probably not very real.
I uploaded to the web various videos from the post display and another photo incl. battery installation.
BATTERY:
https://uloz.to/file/59CfOsh7OcWe/leanord-286 … zEarF1lETSyAN==