Digitalwoodshop
07-02-2008, 04:20 PM
Has been an interesting day with my machine. Cut motor failed to start and I knew looking at the hour meter 747 cut motor hours that it was time for set #2 of the Cut Motor Brushes. Removed the motor and yes the 3/16 inch long brushes were TOO short.... The braided copper wire in the middle of the spring acts like a dog chain and holds the brushes back... A new set of brushes installed and I was back running. Lubed the cut shaft and was looking like a grease monkey.... So off the machine went carving.
An hour later I was at the point of Flip the board and after I was getting check board sensor. Cleaned it and had a non changing 7..... Powered down and replaced the board detector and it looked good hanging there 150 with a piece of white paper. Just for the heck I put the bad one back in and it was reading zero and it is one of the LHR Glued units???????
Put the new sensor back in and put it back together without checking and now I get a OPEN COVER..... I look at the sensor data and the rollers are compressed but showing uncompressed. Z data is Zero and will not change. Y data works.
I should have checked a few more sensors but I had a hint of what had happened...
While I was replacing the board detector I had pulled a little slack down from the wires. A wire was now pinched between the plastic track cover and the metal of the Z truck.
I got out my flashlight and needle nose pliers and on the back of the Z truck little black plastic board cover you will see the big flat ribbon cable, the Z Motor power and encoder wires and a plug at the bottom to power the board detector.... Long sentence -5 points...
I carefully pulled one wire at a time and just like I thought one was pinched so I pulled it up.
Powered back up and manually compressed and uncompressed the roller and it changed states. Checked the board sensor and it now worked again with the new sensor..... I did not mess with the old one again.....
Put it back together and started a project and away it went, a Happy Carving Machine....
So Lucky me...... the first time that happened I was in warranty and had to send the machine in for repair.
I remember someone posting about a open cover problem that would not go away.
Check the rollers and try to change the status by pressing on them and also check and see if the Z data changes.
What had happened was the pinched wire shorted some of the logic and the original 7 board sensor never changing was because the data buss was locked up. For the Binary Digital Logic Guy's a Binary 1 1 1 = 7
4 + 2 + 1..... So the short might have caused the logic to go High or 1
Just something to look at.
A few months ago I pinched and broke a wire for the board detector and ordered a replacement. That replacement would have involved removing the Y Axis a VERY BIG job..... I was able to get enough slack and spliced the wire soldering it and using very small heat shrink to protect it. It still works.
I will post pictures later I have a meeting tonight for Fire Clocks.... A 50th celibration....
AL
An hour later I was at the point of Flip the board and after I was getting check board sensor. Cleaned it and had a non changing 7..... Powered down and replaced the board detector and it looked good hanging there 150 with a piece of white paper. Just for the heck I put the bad one back in and it was reading zero and it is one of the LHR Glued units???????
Put the new sensor back in and put it back together without checking and now I get a OPEN COVER..... I look at the sensor data and the rollers are compressed but showing uncompressed. Z data is Zero and will not change. Y data works.
I should have checked a few more sensors but I had a hint of what had happened...
While I was replacing the board detector I had pulled a little slack down from the wires. A wire was now pinched between the plastic track cover and the metal of the Z truck.
I got out my flashlight and needle nose pliers and on the back of the Z truck little black plastic board cover you will see the big flat ribbon cable, the Z Motor power and encoder wires and a plug at the bottom to power the board detector.... Long sentence -5 points...
I carefully pulled one wire at a time and just like I thought one was pinched so I pulled it up.
Powered back up and manually compressed and uncompressed the roller and it changed states. Checked the board sensor and it now worked again with the new sensor..... I did not mess with the old one again.....
Put it back together and started a project and away it went, a Happy Carving Machine....
So Lucky me...... the first time that happened I was in warranty and had to send the machine in for repair.
I remember someone posting about a open cover problem that would not go away.
Check the rollers and try to change the status by pressing on them and also check and see if the Z data changes.
What had happened was the pinched wire shorted some of the logic and the original 7 board sensor never changing was because the data buss was locked up. For the Binary Digital Logic Guy's a Binary 1 1 1 = 7
4 + 2 + 1..... So the short might have caused the logic to go High or 1
Just something to look at.
A few months ago I pinched and broke a wire for the board detector and ordered a replacement. That replacement would have involved removing the Y Axis a VERY BIG job..... I was able to get enough slack and spliced the wire soldering it and using very small heat shrink to protect it. It still works.
I will post pictures later I have a meeting tonight for Fire Clocks.... A 50th celibration....
AL