Electronics Forum: epcu (Page 1 of 2)

Quad 4000c EPCU replacement P/N?

Electronics Forum | Mon Apr 03 08:51:43 EDT 2017 | teslalab2

When you update a Quad to windows, they replace the epcu card with some other card, does anyone know the part number on that card? Thanks

Quad 4C completely hangs on power up

Electronics Forum | Fri Jan 03 15:16:54 EST 2014 | ppminc

If all of the lights are on, on the operator interface panel usually that means the EPCU is defective or not fully seated correctly. If you swapped out the EPCU board from another machine you need to make sure its the same type of machine. If it has

QUAD 4C motor error #5

Electronics Forum | Fri Aug 30 11:31:29 EDT 2013 | nophsem

We have two QUAD 4C working in tandem. 3 months ago the EPCU battery (QUAD # 2) died, then we change it. Then downloaded the MODs from the controller to the assembler(does simultaneously on both machines). All this time we continue to work normally.

Quad 4c MK2, vision problems

Electronics Forum | Thu Dec 24 14:52:24 EST 2020 | bobpan

Good job, For the comm errors i would try: 1. Reseat all the cables that plug into the white multiplexer that is attached to the back of the computer. 2. Reseat the EPCU card down inside the machine. good luck, Merry Xmas, Bob

QUAD 4C motor error #5

Electronics Forum | Fri Aug 30 05:34:28 EDT 2013 | bobpan

I would check the following: 1. Make sure the head can move in all axis including z and theta by physically moving each. 2. Check the voltage from the main power supply which is located in the middle of the machine on the top of the main board asse

Quad 4C completely hangs on power up

Electronics Forum | Thu Jan 02 04:56:38 EST 2014 | bobpan

Here is a couple of things to look at: 1. Make sure the boards are plugged into the correct position. Also just leave out the transport card to see if its hanging up the machine. The transport board should be the board all the way to the right. 2. M

Need Quad IVC Help

Electronics Forum | Mon Mar 14 08:35:27 EST 2005 | ???

no...its losing its position and it homes ok so the sensor is not the problem.....there is a mod code that sets the illumination level for the quad align....make sure that is at 200 or higher. You may want to change the qa card if you have another on


Electronics Forum | Wed Sep 25 13:39:11 EDT 2013 | bobpan

I have rarely seen a bad SRX controller card but it sounds like you may have a faulty card. Since i know you have 2 machines...i would swap them....make sure you take a picture of it or write down where all the cables plug in. The SRX board is locate

Quad 4C MK2, strange pickup delay

Electronics Forum | Tue Oct 01 11:56:57 EDT 2013 | bobpan

I would try the following: 1. Back up your mod codes or make sure they are up to date. 2. Turn off the machine and slide a business card between the battery and the clip located on the EPCU card in the front card rack. 3. Download back in your mod co

Quad 4C laser align calibration

Electronics Forum | Thu May 26 09:21:37 EDT 2016 | bobpan

Everytime I have seen an offset like that it was dirt on the quad-align lens.....try cleaning it off with alcohol and a lint free cloth. If this does not fix it....you may have dirt inside the quad align itself. I am assuming you have checked to ma

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