Applies to machines built from: January, 1996 to January, 1998
Resolve the issue that caused the original I/O PCB to fail before you install a new I/O PCB. If the original I/O PCB had a short, and the cause of the short was not fixed, the new I/O PCB can also short out.
Determine if the machine is brush or brushless:
Determine if the chip auger/conveyor of your machine is single-phase or 3-phase:
Note: Find the location of FU4 in the step 2 illustration.
|Do each set of instructions that is applicable to your machine:|
Make sure a jumper is across pins 1 and 2 all of the Emergency Stop input connectors that are not used (P16, P40, or P61) .
|Coolant Jumper 33-0825||Look at connectors  P6 and P60. If no cable is connected to P60, connect the JUMPER (33-0825, supplied) at P63.|
|Brush machines:||Remove the jumpers from J1, J2, and J7 .|
|Chip augers and conveyors:||Remove the fuse and cap from FU4  for single-phase chip augers and conveyors.
Set your meter to Ohm. Measure test points between TP6 and TP7 at position R119 and R122 . Turn the small screw on the potentiometer to adjust the current for the auger or conveyor:
|Tool Changer Jumper 33-0814 & HS Drawbar Resistor Cable 33-8609.||Install proper jumper at P32 in tool changer circuit. If machine is a vertical or lathe, install jumper [A] (33-0814, supplied).
If machine is horizontal, determine whether a resistor or connector was installed at R3. If board had a resistor, use jumper [B] (33-0814, supplied).
If a connector was installed, then “DB RES” cable (33-8609, supplied) will have to be installed. This cable will connect from the iopcb to the horizontal option card. Remove the old cable and install the new one.
|Current Limit Jumper (J10).||Locate tool changer current limit jumper, J10. Set current limit to 5A for verticals and lathes. Set current limit to 10A for horizontals.|
|If the removed I/O PCB was Revision K or L:||Use connectors P27A, P48A, and P49A  instead P27, P48, and P49  for any cables connected to the removed board.|
Operate the spindle, tool changer, coolant, TSC, P-cool spigot, Emergency Stop, beacon, operator door, and all optional equipment. Make sure that all machine parts and optional systems operate correctly