Hello, I purchased an 89 MV JUNIOR 10 MD control....Machine is a real cherry except for.... Main Board shows 1, Replaced the power supply with a known good one, no help.. BTW all fuses are good thru the machine. Replaced the DI/DO board with a known good one. No help. Replaced the I/O board inside the operators panel No help. Checked all Honda connectors for good connections.
Machine has no 24 NC voltage to any of the terminals, also the operators panel below the CRT and MDI keys is lifeless. + 5 volt is good. Reset button and all keys below example homing, Rotary function switch, MDI, EDIT etc. are down. All functions such as viewing programs, ladder, changing parameters viewing position....all soft keys operate.
It may be a cherry because it hasn't run in 15 years, we pulled all cover and it was full of muti color plastic chips.
The P24/N24 board seem to be OK. This machine has a spindle cooler, and spindle mist lube.....Both are up and show no problems.
OT switches do shut down the machine. Operator E-Stop drops the control out.
I was told the machine had a 24 volt problem when I bought it. The machine has Absolute encoders......When firing up you end up with an OT32 needs homing alarm for all axis'. You can't get the machine MRDY signal to enable the servo's so I can't clear that one.
We have owned something like 8 juniors over the years. 3 early ones with linear guides on Z...This one is Box way and full enclosure We still have 2 later ones making good parts. This one is for my semi-retirement home shop. Started sharpening Drill Bits for my dad when I was 6 or 7 and I'm still trying to know it all 58 years later.
I've pulled all the 24NC wires off every switch I could get to hoping to find the culprit.
Apparently the previous owner had Fanuc take a quick look and they seemed to think a proximity or limit is going to ground, It blows no fuses. I'm leaning to an ESTP caused possibly when a factory pallet changer was removed and not bypassed. However I was told the machine ran fine after the pallet changer and pallet receiver were removed. I know it's a long post but I'm trying to cover all the bases. I'm kind of out in the boonies so bringing in a Fanuc guy is big Bucks. I hate to get beat but this one has me. Rich