Section 4.2
Machine Adjustments
400-088-120-02 4.2-1 Rev Date: 10/2016
4.2 Machine Adjustments
There are two types of adjustments that can be made to a pinspotter: 1) electronic setpoint
adjustments, and 2) mechanical adjustments. Setpoint adjustments are made from the MCU, the
Chassis, or the handheld unit. Refer to the MCU manual, P/N 400-088-008, for details on MCU
operation and the Chassis manual, P/N 400-088-009, for Chassis and handheld unit operation.
It is important to understand how the Chassis implements setpoint changes. The Table and
Sweep drive motors have encoders that constantly feed Table and Sweep position information to
the Chassis. Whenever there is a difference between the actual stopping point of the Table or
Sweep and the associated setpoint, the Chassis will attempt to automatically correct the stopping
point. So, for example, if the Table overshoots the home position by three degrees, it could take a
couple of table cycles to make the correction. The same is true whenever a setpoint is changed. If
the Sweep’s 1
st
Guard setpoint is changed from 66 to 70, it could take a couple of Sweep cycles
for the setpoint change to be fully realized. It is important for the mechanic to understand that
the correction might not be immediate and to not adjust the setpoint further until the machine
has cycled enough times for the change to be fully implemented.
If the Table or Sweep consistently overshoots its stopping point, if an out of range warning message
appears on the Chassis display, or if the Table backs up when stopping at the home position, a
brake failure may have occurred.
4.2.1 Machine Height and Position Adjustments
Refer to the Critical Measurements sheets at the end of this section for a listing of the most
important pinspotter installation parameters. Performing recommended maintenance and
maintaining these critical settings will help you achieve optimal pinspotter operation.
Before making any table adjustments you must check the machine height and position relative to
the pin deck.
1. Verify that the vertical distance from the pin deck to the underside of the frame is 18-7/8
1/8 inches at all four corners. This measurement should be as nearly the same as possible
at each corner, i.e. not 18-3/4 inches at one corner and 19 inches at another, although both
numbers are within limits. A level or straight edge can be used to help make this
measurement (see Figure 4.2-1). Making adjustments may also require adjustment of the
back end’s large leveling jack screws.
2. From a line running through the center of the 7 and 10 spots (known as the 7-10 line), it should
measure 13-5/8 inches to the front of the front vertical member of the front end frame (see A
in Figure 4.2-2). Adjust by loosening the unistrut jam nuts and sliding the entire unit forward or
backward, as necessary, and then tighten the jam nuts.
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