Question about Topcon Rotating Builders Red beam Laser Level RL-VH4DR-GC

2 Answers

How do I calibrate a topcon laser ? - Topcon Rotating Builders Red beam Laser Level RL-VH4DR-GC

Posted by Anonymous on


2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert who has written 20 answers of more than 400 characters.


    An expert who has answered 20 questions.

  • Expert
  • 90 Answers

There are detailed instructions in your users manual on how to check and adjust your Topcon laser. You'll need a tripod, 2 vertical surfaces about 50 meters apart and your laser receiver. It's done by marking positions of the beams, on the different surfaces and then adjusting your laser position to the center of the different positions.
The procedure is different for different models, but i have attached some pictures from the manual for the RL-VH4 series. How do I calibrate a topcon laser ? - calibrate-topcon-laser-xppjbjvrkh5xtizgw5mfou0l-3-0.jpg calibrate-topcon-laser-xppjbjvrkh5xtizgw5mfou0lHow do I calibrate a topcon laser ? - calibrate-topcon-laser-xppjbjvrkh5xtizgw5mfou0l-3-9.jpgibrate-topcon-laser-xppjbjvrkh5xtizgw5mfou0l-3-9.jpg calibrate-topcon-laser-xppjbjvrkh5xtizgw5mfou0l-3-14.jpg

Posted on Dec 13, 2014


  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert who has achieved Level 3.

  • Master
  • 717 Answers

Find a place closest to you that calibrates these instruments and send it there

Posted on Dec 05, 2014


1 Suggested Answer


6ya staff

  • 2 Answers


Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers

Why GTS-102N can not read prism

These are actually high maintenance items and require periodic cleaning and calibration from the manufacturer or authorized service center.

Jun 08, 2014 | Topcon GTS-102N Total Station

2 Answers

No power

It could be a few things.
1. Bad keypad / power button ($30.00 and labor)
2. The power connection is lose from the main board.
3. Corrosion on the rear battery terminal.
4. Lose connection / Battery Springs
5. Bad Main Board.

Most of the time when a laser will not power on, it is a battery connection issue. You can carefully open it and inspect the wiring (red and black cable that goes to the green main board)

If the only problem is that it wont power on I'd be willing to bet it's repairable. Those units are notorious for not holding calibration. If you drop one chances are it may no longer hold calibration due to a bad compensator.

Any laser dealer with a service center should be able to pop that thing open and fix it pretty quickly

If you don't want to pay to have it repaired, open it and check the connections. Be careful not to touch anything unless you have an esd wrist strap, or you could damage the main board. At this point it's already broken so there is no harm in trying.

Apr 15, 2014 | Topcon Rl-h3cl Long-range, Self-leveling...

1 Answer

No laser beam on topcon rlh3c laser level

Take this to a survey/laser repair shop, preferably one that does not charge for estimates.. The laser diodes on the RL-H3C is not serviceable. It requires the lens barrel assembly (or telescope tube unit, i don't remember what they call it in these). It's unreasonably expensive, and will likely be a write off. It may however be the main circuit board, but likely not. Be prepared to replace this unit.

Feb 25, 2014 | Topcon Rlh3c Rotating Laser Level W...

3 Answers

How to calibrate a hilti pri 2 laser

There is no "calibration mode".

To check calibration set the tool on a fixed surface. turn it on. let it autolevel, then mark the wall with a pencil at a distance of 15- 20 feet. rotate the laser on its axis 90 degrees, and see if it self levels to the same line. if it does not, send it to hilti, you'll have it back in a week.

Nov 13, 2012 | Hilti Laser Level. Rotating Laser PRI 2...

1 Answer

Require the service/overhaul manual

Only tech's at topcon shops (or former techs) have thoes, and are usually unwilling to share. It's not like a car, where aftermarket people make manuals and sell them.
If you tell me what you need, i may be able to help you. While i no longer have the manual, I've worked on literally hundreds of them.

Sep 28, 2012 | Topcon Rlh3c Rotating Laser Level W...

1 Answer

My Topcon RL-H3A continually attempts to levvel its self then runs for a short while then goes into a like stand by mode with the out of balance off light (red) and Power light (Green) flashing Thisn...

Sound like the laser diode is failing. It's power is likely just strong enough to get the level position right, then dims as it runs. The unit, no longer seeing the laser, decides it's out of level and stops. Or the oil in the compensator is leaking, and the same process is happening. Unfortunately the replacement part is not economical to replace.

Dec 02, 2010 | Topcon Rlh3a Long Range Rotating Laser...

Not finding what you are looking for?
Topcon Rotating Builders Red beam Laser Level RL-VH4DR-GC Logo

552 people viewed this question

Ask a Question

Usually answered in minutes!

Top Topcon Measuring Tools & Sensors Experts

Brad Brown

Level 3 Expert

18110 Answers


Level 3 Expert

10445 Answers

Stephen Miller

Level 3 Expert

1645 Answers

Are you a Topcon Measuring Tool and Sensor Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides