Just looked at the pics on Sees, and the Selector board eprom slot is unpopulated.

I imagine the door board is the same.

My memory must be fuzzy

Door and selector boards come with software, just 1 chip. I’ve never had reason to change software on either. How’s you end up getting the DK13?

I happened to talk to another union independent in the area (we are making boards that make addressing a MA code issue an easy fix), and asked if he had software around. He happened to have this new board and software, and mentioned that he couldn't get it to work with older boards in a system. He let me take it, and we'll pay him if we can get it to work.

Make sure you copy the chips while you have them

I will for sure.

I talked to World today. No software with the Selector, and they are saying the PY door board has to be programmed by TK.

I guess Monday I will talk to the owner about a Mod.

Hi all,
Great info trust!!!
I'm wondering which door board was installed originally? Thyssen has sent me the wrong board which will only work with a Tac 20. Which door board model number was removed and which number was installed?

Kind of hard to tell. The original one was so old there isn't a 6300 number on it. ASSY 141329 w 675ABx and 675acx eproms.

We tried several we had on hand.

6300PY2 & 6300PY4 are for DMC
6300PY1 & 6300PY3 are for Tac20
You can have the same problem with FX boards but I’d have to look those up

Thanks for posting the models Trust!
SomeGuy, I would double check which door board you have in there now.

hope it helps

I wanted to thank you all, especially Indirtwetrust for all of the help here!

You guys are great.

Hi, I am new here.

I have a damaged 27C256 Eprom M1 675AA3, it is overheating. Tried to read the code with an Eprom programmer, reads only 0xFF's, chip is really bad.
I already have the new erased 27C256 to be programed, but do not have the binary to program into the chip.

Where can I download the 675AA3 for the M1 position?

Thanks a lot,

Hi, during the last months I did learn a lot.

The door boards 6300PY1 and 6300PY3 in fact WILL WORK on the DMC, but it needs the eprom code 675-ET4. Those boards come with eprom code 675-HA2 for the TAC-20. With code HA2 on DMC, the board will obey open/close door pressing the board buttons, but WILL NOT communicate with CLC. It needs the 675-ET4, then it runs nice, found this by chance.

The DMC CLC board 6300BP4 will run with 675-DK4, DK6, DK11, DK13, being the DK13 the most recent I saw around. DK11 and DK13 has some extra CLC adjustments on IMS, and allows car cycle setting mode 86. Change 86 to floor A, enter enter and save, change 86 to floor B and enter enter but don't save. Car will cycle between floors A & B.

I don't know what extra improvement they made on DK13 from DK11, curious to know.

CLC uses Eprom chips 27C256 speed 70ns, but it runs nicely with chips -100ns and even -120ns, since clock is 7.3MHz and the processor 68HC09 use 2 clock cycles to read the eproms, so more than 270ns.

The DMC Selector board 6300CV3 with eprom 675-JK1 (25C512). The eprom socket is longer than the eprom. Eprom has 28 pins, socket has 32 pins, The eprom bottom is aligned near reset switch, the socket top 4 pins is unused, 1, 2, 31 and 32. It is easy to confuse. The bottom 32k of the 27C512 is unused and empty, I don't know why they did that, maybe expecting future expansions or upgrades. Technically a 27C256 will work, but I didn't tested yet, since the A15 addressing pin is N.C. on the 27C256 and the eprom will answer when this pin is active or not, so, will answer as a 27C512 upper bank.