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CNC Parts Dept., Inc.

CNC Router Sales, Repair Services, CNC Parts

Troubleshooting CNC Routers

If there is something you need assistance with while troubleshooting your CNC router, don’t hesitate to contact our skilled CNC engineers today. We offer free telephone support! Below is a sample of the many helpful CNC router troubleshooting documents in our archive. 

CNC Parts Dept., Inc. and CNC Services Inc. work together to keep our customers online and productive. We provide extensive technical documentation to our CNC router customers, upon request. From troubleshooting guides to user manuals and wiring diagrams, we have many documents to support our end users. 

Contact CNC Services Today!
Troubleshooting CNC Routers

Troubleshooting DC Servo Motors

  • Machine shifts position during operation
  • Axis homes in different positions
  • Axis vibration
  • Axis never homes
  • Axis runs away or goes the wrong direction
  • Feedback alarms
  • Following errors
  • Servo wiring diagram
  • Setting Up a DC Servo Card – Servo Dynamics SDFPO 1525-17
  • Servo card adjustment, Fagor 8050/8055

Troubleshooting Spindle Motors

  • Spindle faults
  • Spindle doesn’t come up speed
  • Spindle gets hot
  • Spindle sensors
  • ISO Toolholder Gets Stuck In Spindle

Programming AC Motor Drives

  • Programming VFDs / AC motor drives / power inverters
  • Wiring Cross Reference from your old inverter to a Delta VFD-B

CNC Router Maintenance

  • Scheduled Maintenance
  • Tool Holder Maintenance
  • Z Axis Bearing Replacement
    • 5 Axis Routers
    • 3 Axis Routers
  • DC Servo Brush Maintenance
  • Air Cylinder Filter Maintenance
  • Blower Filter Maintenance
  • Line Reactor Maintenance
  • Braking Resistor Maintenance

Troubleshooting Ground Faults

  • Servo Card Ground Fault

Troubleshooting Pneumatics

  • Leaky Air Regulator
  • Counterbalance Cylinders

Troubleshooting CNC Controllers

  • How to BackUp Your CNC Controllers
    • Fagor 8035/40/50/55 Controller
    • Fagor 8025 Controller
    • Allen Bradley 8400 Controller
    • Allen Bradley 9 Series Controller
    • Siemens 810M Controller

Contact CNC Services, Inc.

To access our CNC router troubleshooting guides, contact our San Diego office at (858) 922-4967, or send us a message on our website!

Contact Us Today!

CNC Router Repair Services

Fagor CNC Retrofits

Fagor CNC Retrofits

CNC Router Maintenance

Router Maintenance

Servo Motor Repair

Servo Motor Repair

Machine Rewire

Customer Testimonials

Thanks for the help on the phone yesterday. It got me out of a little pickle.

Dave Stevens, Eureka High School

CNC Services, Inc., CNC Parts Dept., Inc.
2019-03-28T00:51:57-07:00

Dave Stevens, Eureka High School

Thanks for the help on the phone yesterday. It got me out of a little pickle.
Angus, just a note to say the power supply did the trick. We are back up and running, and are quite pleased with your help in this matter. We’ll keep you in mind for any further business. Thanks again!

Mike Haas - Hyson Products

CNC Services, Inc., CNC Parts Dept., Inc.
2019-03-28T01:48:00-07:00

Mike Haas - Hyson Products

Angus, we are back up and running, and are quite pleased with your help in this matter. We’ll keep you in mind for any further business. Thanks again!
We have done business with CNC Services for years, and have always been impressed with their service. Recently though, they set a new standard for service when we lost an actuator motor on our Royce and couldn’t get a replacement for 8+ weeks. Lynn and Erik went all out to help us and was able to get it for us in about 5 weeks. Exemplary service!

John Nix - Associated Thermoforming, Inc

CNC Services, Inc., CNC Parts Dept., Inc.
2019-03-28T01:15:06-07:00

John Nix - Associated Thermoforming, Inc

Recently CNC Services set a new standard for service when we lost an actuator motor on router and Lynn and Erik went all out to help us. Exemplary service!
I have been working with Erik since before CNC Services started. His trouble shooting skills can not be beat. In the rare situation where a part is not available he offers an alternative quickly. And has talked me through repairs over the phone. And he has built a great team. Thanks!

John, CW Thomas LLC

CNC Services, Inc., CNC Parts Dept., Inc.
2019-03-28T01:08:15-07:00

John, CW Thomas LLC

Erik's troubleshooting skills can't be beat. In the rare situation where a part is unavailable, he offers an alternative quickly. He has built a great team.
Angus, I just wanted to follow up and thank you for your support.  Everything worked out nicely and our spindle hasn’t been this happy in years. 

Greg Allen, Blockhead Tools

CNC Services, Inc., CNC Parts Dept., Inc.
2019-06-17T02:13:17-07:00

Greg Allen, Blockhead Tools

Angus, I just wanted to follow up and thank you for your support.  Everything worked out nicely and our spindle hasn’t been this happy in years. 
Lynn, One of the wires running from the reactor to the spindle was loose at the reactor. When I pulled on it, it popped out of the terminating strip. Thank you very much for your info. We are up and running thanks to you!!!

Brian Dahn - Donaldson, Monticello Plan

CNC Services, Inc., CNC Parts Dept., Inc.
2019-03-28T01:45:13-07:00

Brian Dahn - Donaldson, Monticello Plan

Lynn, Thank you very much for your info. We are up and running thanks to you!!!
Erik, After we spoke yesterday morning, I dove right in with my caliper and tools. You nailed the encoder issue on the head. I edited the MD setting and Boom! PERFECT increments and repeatable! I also was successful in putting the bearings back in the block on the Z. WHAT A DIFFERENCE those two repairs made, you have a customer for life. Have you had any luck finding the info on how to double the memory in the 810M controller? That would be GREATLY appreciated. Thanks a ton in advance.

Derrick Benson - Portland, OR

CNC Services, Inc., CNC Parts Dept., Inc.
2019-03-28T02:04:42-07:00

Derrick Benson - Portland, OR

Erik, you nailed the encoder issue on the head. PERFECT increments and repeatable! WHAT A DIFFERENCE those two repairs made, you have a customer for life.
CNC Parts Dept. and CNC Services are always a big help to me.

Kris Hawthorne - Vectorworks Marine

CNC Services, Inc., CNC Parts Dept., Inc.
2019-03-28T02:06:15-07:00

Kris Hawthorne - Vectorworks Marine

CNC Parts Dept. and CNC Services are always a big help to me.
Erik/Lynn, You guys are awesome! I just ran the first set of parts on the rebuild. Looks like this little beast has been tamed. I deeply appreciate the work you guys put into this build: I couldn’t have done it without ya! Thanks A Bunch!

Todd Wertz - Formation Plastics Inc.

CNC Services, Inc., CNC Parts Dept., Inc.
2019-03-28T01:32:09-07:00

Todd Wertz - Formation Plastics Inc.

You guys are awesome! I deeply appreciate the work you guys put into this build: I couldn’t have done it without ya! Thanks A Bunch!
Thank you Erik for all the help over the years with trouble shooting our CNC routers. Your easy to follow trouble shooting techniques are easy to follow and have helped us get our machines back up and running quickly preventing us from missing our shipments to our customers. Your trouble shooting monthly bulletin is also helpful. I would highly recommend having Erik come to your facility to train your maintenance staff. Lynn, Angus, Siale are great at getting me the parts I need in a hurry and have always pulled through for me. Thank you.

Bob Gurney

CNC Services, Inc., CNC Parts Dept., Inc.
2019-03-28T01:36:09-07:00

Bob Gurney

Thank you Erik for all the help over the years with troubleshooting CNC routers. I highly recommend having Erik train your maintenance staff.
Thanks for the great response time. The machine was up and running Friday.

Paul Matthews - www.steelcase.com

CNC Services, Inc., CNC Parts Dept., Inc.
2019-03-28T01:54:26-07:00

Paul Matthews - www.steelcase.com

Thanks for the great response time. The machine was up and running Friday.
Hi Again Erik, Machine is running perfectly today. I resolved the tool change problem. I am going to send you my machine table files in a day or so as I know you keep many of these on record for your customers. I want to also mention how grateful I am for your support. Once you got me through those plc errors and I saw the machine actually move I knew we had it. I look forward to continuing our business with all of you at CNC Services/Parts Dept. Thank you!

Donny Reinig - Smart Industries

CNC Services, Inc., CNC Parts Dept., Inc.
2019-03-28T01:28:58-07:00

Donny Reinig - Smart Industries

I am grateful for your support. I look forward to continuing our business with all of you at CNC Services/Parts Dept. Thank you!
CNC Services’ experience, dedication and willingness to go above and beyond made our move a whole lot easier for us.

Clint Lackey - MFG Galileo

CNC Services, Inc., CNC Parts Dept., Inc.
2019-03-28T02:07:20-07:00

Clint Lackey - MFG Galileo

CNC Services’ experience, dedication and willingness to go above and beyond made our move a whole lot easier for us.
Angus, We wanted to say thanks for the excellent service. Owen came out and fixed us up in a timely and professional manner. As much as we don’t want problems on our CNC machines, we look forward to working with you all after the inevitable…

You Erik, Lynn, Owen and the gang have a Happy 4th of July! Thanks again!

Kevin - M&M Plastics Incorporated

CNC Services, Inc., CNC Parts Dept., Inc.
2019-03-28T01:10:23-07:00

Kevin - M&M Plastics Incorporated

Thanks for the excellent service. Owen came out and fixed us up in a timely and professional manner. We look forward to working with you.
Lynn and Erik, Your help was such a lifesaver with our Fagor CNC controller problems. Thanks!

Greg Aanes - Greg Aanes Furniture

CNC Services, Inc., CNC Parts Dept., Inc.
2019-03-28T01:56:18-07:00

Greg Aanes - Greg Aanes Furniture

Lynn and Erik, Your help was such a lifesaver with our Fagor CNC controller problems. Thanks!
Thanks for the wonderful service we have received throughout this 2011 year. We look forward to our associate in 2012.

Christine Van Der Hulst - Proform Plastics Limited

CNC Services, Inc., CNC Parts Dept., Inc.
2019-03-28T01:46:42-07:00

Christine Van Der Hulst - Proform Plastics Limited

Thanks for the wonderful router service we have received throughout this 2011 year. We look forward to our associate in 2012.
Lynn and Erik, The Allen Bradley is running again.  Thanks for all of your help.  The motherboard seems to have done the trick!  I will return the CPU that you also sent for this repair. Thanks!

Chris O’Leary - Kenson Plastics

CNC Services, Inc., CNC Parts Dept., Inc.
2019-03-28T01:57:45-07:00

Chris O’Leary - Kenson Plastics

Lynn and Erik, Thanks for all of your help. The motherboard seems to have done the trick! I will return the CPU that you also sent for this repair. Thanks!
I would like to greatly thank you for your phone support the other day, we were really in a jam with our machine. Your support was outstanding, we know you’re the best!

Ron Palesch - la Modèlerie de Montréal

CNC Services, Inc., CNC Parts Dept., Inc.
2018-06-22T04:16:45-07:00

Ron Palesch - la Modèlerie de Montréal

...Thank you for your phone support the other day, we were really in a jam with our machine. Your support was outstanding, we know you’re the best!
Angus, Just want to say thanks to you and Owen for the work on our Gerber Profile table. Owen went out of his way to accommodate us even after his normal working hours. He was able to diagnose our problem, saving us a lot of money. He worked in a professional manner with our operators and myself. Looking forward to working with the both you in the future. Thanks again.
Tony - Sanders Composites
CNC Services, Inc., CNC Parts Dept., Inc.
2019-03-28T01:04:30-07:00
Tony - Sanders Composites
Owen went out of his way to accommodate us even after his normal working hours. He was able to diagnose our problem, saving us a lot of money.
Erik, I would like to convey my appreciation (beside paying an invoice) for your diligence and perseverance during the start-up and training of the MAAC Royce Router this last weekend. Your attitude (even though missing a birthday event with your father) and intellectual competency were over the top. It has been a while since I have experienced the result of a true professional consultant.

Charlie Quinn - KEMPOSITS, LLC

CNC Services, Inc., CNC Parts Dept., Inc.
2019-03-28T01:40:46-07:00

Charlie Quinn - KEMPOSITS, LLC

Your attitude and intellectual competency were over the top. It has been a while since I have experienced the result of a true professional consultant.
The 5 Axis Royce router (recently rebuilt by CNC Services) runs 24/7, is very reliable and consistent! Thank you!

Dwight - Reliant Plastics

CNC Services, Inc., CNC Parts Dept., Inc.
2019-03-28T01:21:57-07:00

Dwight - Reliant Plastics

The 5 axis Royce CNC router (recently rebuilt by CNC Services, Inc) runs 24/7, is very reliable and consistent! Thank you!
First off we here at Western Casework Corp. in Las Vegas, NV wanted to say thanks to all of you who helped get us back up and running in 2 days. You guys are great and hope to do more work with you guys in years to come.

Johnathan Davenport, Western Casework Corp. - Engineering Department

CNC Services, Inc., CNC Parts Dept., Inc.
2019-01-18T01:15:51-07:00

Johnathan Davenport, Western Casework Corp. - Engineering Department

Thanks to all of you who helped get us back up and running in 2 days. You guys are great and hope to do more work with you guys in years to come.
Thank you for your visit. Your time spent here moved us forward by leaps and bounds.

Jason Eccles - Production Manager - Branches, LLC

CNC Services, Inc., CNC Parts Dept., Inc.
2019-03-28T01:49:19-07:00

Jason Eccles - Production Manager - Branches, LLC

Thank you for your visit. Your time spent here moved us forward by leaps and bounds.
I wanted to let you know that we really appreciate the time you put in with us on the phone for our most recent CNC repair. You had it right about the initial cause of our problem (bad power supply) and your people were able to quickly ship us the replacement part. Also, your expertise after the sale in helping Kenny and I get the machine reset was invaluable. Thank you so much!

Leif Craig - Office Connection/The Office Furniture Factory

CNC Services, Inc., CNC Parts Dept., Inc.
2019-03-28T01:52:46-07:00

Leif Craig - Office Connection/The Office Furniture Factory

We really appreciate the time you put in with us on the phone for our most recent CNC repair. Your expertise after the sale was invaluable.
Thank you for your service. That was so awesome to have that stuff delivered today. We were able to fix the machine and get it up and running so quickly. Thanks again for your great service.

Brando Pimienta - The Roughhouse

CNC Services, Inc., CNC Parts Dept., Inc.
2019-03-28T02:08:45-07:00

Brando Pimienta - The Roughhouse

That was so awesome to have that delivered today. We were able to fix the machine and get it up and running so quickly. Thanks again for your great service.
I can't properly thank the whole group at CNC Services!! Time and time again they've saved the day for us and gotten our machines up and running. Whether its parts, service or numerous phone calls Erik, Lynn, Angus, and Siale, I appreciate all the help you provide. The level of service the entire staff prides itself on is unparalleled in this industry.

Ernie DeLost - Capital L MFG., Inc.

CNC Services, Inc., CNC Parts Dept., Inc.
2018-06-22T03:44:51-07:00

Ernie DeLost - Capital L MFG., Inc.

Whether its parts, service or numerous phone calls... I appreciate all the help you provide. The level of service... is unparalleled in this industry.
Angus, All of us at Northern Prairie CNC wanted to take a minute, to thank you and the team at CNC Parts Department. From the first conversation until the techs left our facility, we received nothing short of 5-star service. We were very impressed by your service techs (Matt and Owen). Their machine knowledge, professionalism and work ethic went above and beyond our expectations. We appreciate all the effort, time and coordination that went into getting this machine going! 

 

Northern Prairie CNC

CNC Services, Inc., CNC Parts Dept., Inc.
2019-07-18T18:47:12-07:00

Northern Prairie CNC

We were very impressed by your service techs Matt and Owen. Their machine knowledge, professionalism and work ethic went above and beyond our expectations.

We Support American Manufacturing

CNC Parts Dept., Inc. and CNC Services, Inc. work together to support our CNC router customers nationwide. Therefore, if you need assistance with your CNC router machine, contact our CNC engineers today. We offer free telephone technical troubleshooting support to our customers.

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