Name: Haas VF Series
Brand: Haas
Rating: 4 (1 reviews)

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1-15-96 96-8100

TABLE OF CONTENTS

HAAS AUTOMATION, INC.

TROUBLESHOOTING

SERVICE

MANUAL

VF-SERIES

TROUBLESHOOTING

This section is intended for use in determining the solution to a known problem. Solutions given are intended to give the

individual servicing the CNC a pattern to follow in, first, determining the problems source and, second, solving the problem.

The troubleshooting tips are organized in this section according to the area of the CNC that may be giving sign of a problem.

(Ex.: Out-of round circles in drilling will be found under the heading General Machine Operation - Accuracy).

If the problem you are experiencing cannot be found under the heading you expect, please try several other possible head-

ings. If the problem is still not found, contact Haas Automation for further details.

BEFORE YOU BEGIN:

USE COMMON SENSE

Many problems are easily overcome by correctly evaluating the situation. All machine operations are composed of a

program, tools, and tooling. You must look at all three before blaming one as the fault area. If a bored hole is chattering

because of an overextended boring bar, dont expect the machine to correct the fault. Dont suspect machine accuracy if the

vise bends the part. Dont claim hole mis-positioning if you dont first center-drill the hole.

FIND THE PROBLEM FIRST

Many mechanics tear into things before they understand the problem, hoping that it will appear as they go. We know this

from the fact that more than half of all warranty returned parts are in good working order. If the spindle doesnt turn,

remember that the spindle is connected to the gear box, which is connected to the spindle motor, which is driven by the

spindle drive, which is connected to the I/O BOARD, which is driven by the computer. The moral here is dont replace the

spindle drive if the belt is broken. Find the problem first; dont just replace the easiest part to get to.

DONT TINKER WITH THE MACHINE

There are hundreds of parameters, wires, switches, etc., that you can change in this machine. Dont start randomly changing

parts and parameters. Remember, there is a good chance that if you change something, you will incorrectly install it or break

something else in the process. Consider for a moment changing the processors board. First, you have to download all

parameters, remove a dozen connectors, replace the board, reload and reconnect, and if you make one mistake or bend one

tiny pin it WONT WORK. You always need to consider the risk of accidentally damaging the machine anytime you work on

it. It is cheap insurance to double-check a suspect part before physically changing it. The less work you do on the machine

the better.

Haas VF Series Service Manual

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