# Bridge Replacement

{% hint style="warning" %}

### Repair guides are to be used when directed by Voltera Support only!

**Performing these without Voltera Support's direction could be the wrong resolution path for your issue and could cause damage to your machine. If you haven't been in contact with Voltera Support about your issue please email <support@voltera.io> or reach out in the chat before proceeding.**
{% endhint %}

## Before you begin

This guide will take you through replacing NOVAs bridge. Before beginning this guide you should have been in contact with our support team and received replacement parts and calibration jigs.

{% hint style="warning" %}
**Safety first!** Before starting any repair, take a moment to review the [safety information in your user manual.](https://docs.voltera.io/docs/nova/downloads/nova-user-manual) An online version of the guidelines can also be found [here.](https://docs.voltera.io/docs/nova/getting-started/safety-guidelines)
{% endhint %}

As you work through this guide please reach out to our email <support@voltera.io> or through the chat if you run into any issues or have any questions. We are more than happy to assist you virtually with this repair.&#x20;

{% hint style="success" %}
**When in doubt, reach out!**
{% endhint %}

#### Estimated Repair Time:

* 4 hours

#### Tools you will need:

* Screwdriver
  * T25 Torx bit  *<mark style="background-color:blue;">Torque Setting = Dewalt Driver 13</mark>*
  * T20 Torx bit  *<mark style="background-color:blue;">Torque Setting = Dewalt Driver 13</mark>*
  * T10 Torx bit  *<mark style="background-color:blue;">Torque Setting = Dewalt Driver 8 or Hand Tight</mark>*
* Flush cutters
* Metric Hex Key Set

#### Parts you have received from Voltera:

* Replacement bridge
* Bridge levelling tool
* Dial indicator
* Camera calibration fixture
* Scale and skew calibration board (with mounting hardware)

## NOVA Setup

Ensure NOVA is placed on a flat, sturdy working surface. You will need to turn NOVA during this repair.&#x20;

{% hint style="success" %}
It's important that you have enough working room and a secure place to store loose screws and hardware.
{% endhint %}

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/SqYlTxiKwQ3vVLyDX1Wv/image.png" alt=""><figcaption></figcaption></figure>

## Disassemble NOVA

{% stepper %}
{% step %}

#### Disconnect NOVA from power

Ensure that NOVA is turned off with the power button and then unplug the power cable.

<figure><img src="https://lh7-rt.googleusercontent.com/slidesz/AGV_vUfemsBggVvQ8Ff_ZVNRTmpkd158WPpBQ0B7CNAqRBrfkR_C0BAvXNGywtz5_gZki5GWEYspOsjUTN3nnPTMo00ktidX4Qc5NInz_X71B5vyUwBeWMLrLROkIDL03cMfzRGM1mBhnA=nw?key=FyXWpw1YygHPFuhH-bIybD7L" alt="" width="375"><figcaption></figcaption></figure>
{% endstep %}

{% step %}

#### Rotate NOVA

First, rotate NOVA so that you can access the back panel.&#x20;

{% hint style="danger" %}
Do not lift NOVA by the side rails or bridge. Always lift NOVA by the main body or rotate and pivot NOVA on its rubber feet.&#x20;
{% endhint %}

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/JKZYyBhCePZHpC4s3lMx/image.png" alt=""><figcaption></figcaption></figure>
{% endstep %}

{% step %}

#### Remove NOVAs back panel&#x20;

With a T20 Torx bit remove the 6 screws (2 on the back side, 4 on the bottom of the panel) securing the back panel.&#x20;

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/Coe0yfNiaAkiaCa4EqIi/image.png" alt=""><figcaption></figcaption></figure>

Once the screws are out you can pull the back panel out by tilting it up slightly and then pulling away from the machine.

{% embed url="<https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FYKzrL5Rz2l0ufpEa39Yc%2Fuploads%2FggfE1jiHZSVl0wYG2Ysu%2FIMG_6192.mp4?alt=media&token=ecce98f3-10a0-468e-bf24-b9ce93116546>" %}
{% endstep %}

{% step %}

#### Remove NOVAs side cover panels

Using a flat head screwdriver or larger hex key pry the side panel friction clips loose and slide the side cover panel out the back of NOVA.&#x20;

{% embed url="<https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FYKzrL5Rz2l0ufpEa39Yc%2Fuploads%2FU2FVO0Y3pwsNrb0tykhh%2FIMG_6199.mp4?alt=media&token=0701f31e-9de9-4002-b794-63ce5a935e93>" %}

Use a piece of tape to label which side of NOVA the cover panel came off of for later.&#x20;

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/CdCMZv1KUgkmSwwRKnpB/image.png" alt=""><figcaption></figcaption></figure>
{% endstep %}

{% step %}

#### Unplug NOVAs power button

With a pair of flush cutters, clip and remove the zip tie securing NOVAs power cable.&#x20;

<div><figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/LH81nx5ttvPABo9zQAxf/image.png" alt=""><figcaption></figcaption></figure> <figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/2RATCqdmJZaBcWuhqetr/image.png" alt=""><figcaption></figcaption></figure></div>

Unplug the power cable by pressing down on the cables release tab and pulling it out of the connector.&#x20;

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/Cuw2AYhykX2ZjTfasgqW/image.png" alt=""><figcaption></figcaption></figure>
{% endstep %}

{% step %}

#### Remove NOVAs side fenders&#x20;

With a T20 Torx bit remove the 11 screws securing each of NOVAs side fenders (5 on the outer side, 4 on the inner side, and 2 on the bottom side).&#x20;

<div><figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/J01Kfq7sSPYdAPnyx5yZ/image.png" alt=""><figcaption></figcaption></figure> <figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/CIOo64Y16K6SgSUHFi3q/image.png" alt=""><figcaption></figcaption></figure></div>

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/Oez0r1fciK38nC5UGbDu/image.png" alt=""><figcaption></figcaption></figure>

Remove both fenders by lifting up on the backside and sliding the fender forward and out.&#x20;

{% embed url="<https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FYKzrL5Rz2l0ufpEa39Yc%2Fuploads%2FxyAGImw3hSnCrvrO8cti%2FIMG_6211.mp4?alt=media&token=e16809ac-2ff3-40c5-ac5d-a91d0e78ed95>" %}
{% endstep %}

{% step %}

#### Remove the ribbon cable clamps

Using a T10 Torx bit remove the 3 cable clamps securing NOVAs gantry ribbon cables.&#x20;

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/LMAszVTXYerlVQmrbnwU/image.png" alt="" width="563"><figcaption></figcaption></figure>

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/IBPCeT1xGYrwHwVe8azU/image.png" alt="" width="563"><figcaption></figcaption></figure>
{% endstep %}

{% step %}

#### Disconnect the Y-carriage PCB

First, disconnect the four ribbon cables connected to the Y-carriage PCB.&#x20;

{% hint style="warning" %}
Be very gentle when opening the ribbon cable connectors. They can be very fragile!&#x20;
{% endhint %}

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/4wGCtgXlMPNoUtkOc673/image.png" alt=""><figcaption></figcaption></figure>

{% hint style="info" %}
In case you've forgotten, here is a video of how to properly disconnect a ribbon cable:

<a href="https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FYKzrL5Rz2l0ufpEa39Yc%2Fuploads%2Fjr3tZPassrlKMV6I7QmY%2FIMG_6217.mp4?alt=media&#x26;token=db5bac35-669b-4a5e-8ba2-2092dbc51be2" class="button primary">How to disconnect a ribbon cable</a>
{% endhint %}

Next, disconnect the motor cable by pressing down on the cables release tab and pulling it out of the connector.&#x20;

{% embed url="<https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FYKzrL5Rz2l0ufpEa39Yc%2Fuploads%2FIsdcjPTdUIXfCqHbXyAY%2FIMG_6220.mp4?alt=media&token=ee856854-8e70-4b38-bccf-24c58b8f8487>" %}
{% endstep %}

{% step %}

#### Remove the Y-carriage PCB

Using a T10 Torx bit remove the 4 screws securing the Y-carriage PCB.

<div><figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/5gzAo1n2XzM8LxXo0ZXz/image.png" alt="" width="563"><figcaption></figcaption></figure> <figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/MeU6hHHa9MfnnSz5ZrgQ/image.png" alt="" width="563"><figcaption></figcaption></figure></div>

With the Y-carriage PCB removed, temporarily pull out the gantry ribbon cables and allow them to hang behind NOVA.&#x20;

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/6xXm7vrHxaLRTTJPkC8V/image.png" alt=""><figcaption></figcaption></figure>

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/CATfu8oT4JsNio5TVvtj/image.png" alt=""><figcaption></figcaption></figure>
{% endstep %}

{% step %}

#### Remove NOVAs cable trays

With a T20 Torx bit remove the 8 screws and washers securing NOVAs left and right cable trays (4 in the back and 4 in the front).&#x20;

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/2PDHX4qigQ6B9OenaB1Z/image.png" alt=""><figcaption></figcaption></figure>

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/F4mCIAqy4dupjl20rGlt/image.png" alt=""><figcaption></figcaption></figure>
{% endstep %}

{% step %}

#### Remove NOVAs bridge

With a T25 Torx bit remove the 4 screws securing NOVAs bridge (2 left, 2 right).&#x20;

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/75zF7igxvnM4FhU2hIeB/image.png" alt=""><figcaption></figcaption></figure>

{% embed url="<https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FYKzrL5Rz2l0ufpEa39Yc%2Fuploads%2F0aGBk9A3uXNO65iBfHCw%2FIMG_6233.mp4?alt=media&token=c1ec021e-9143-4d1f-b52d-76e4ec35b0b8>" %}

{% hint style="success" %}
Now that NOVAs old bridge is off place it in a safe and secure location. After the repair is complete you will pack it up and send it back to Voltera.&#x20;
{% endhint %}
{% endstep %}
{% endstepper %}

## Install the New Bridge

{% stepper %}
{% step %}

#### Install the new bridge

Install the new bridge onto NOVA. Using a T25 Torx bit tighten (Torque Setting 13 on Dewalt Driver) the 4 screws securing NOVAs bridge (2 left, 2 right).

{% hint style="warning" %}
If the screws look uncoated add a medium Loctite (liquid or paste is fine).
{% endhint %}

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/7FXzwkxOeRXFbVoyuFOh/image.png" alt=""><figcaption></figcaption></figure>

{% hint style="warning" %}
Ensure the cables on the bridge are in their appropriate slots and not being pinched by the bridge mounting bracket.&#x20;
{% endhint %}

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/yK15NeniNhJPg4HBO6tz/image.png" alt="" width="563"><figcaption></figcaption></figure>
{% endstep %}

{% step %}

#### Attach the dial indicator&#x20;

Attach the dial indicator to NOVAs right tool port. Push NOVAs module hub to the right most side of NOVA supporting the top and bottom of the hub.&#x20;

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/fh7Epjsr4amhCtFBvV6q/image.png" alt=""><figcaption></figcaption></figure>
{% endstep %}

{% step %}

#### Level the bridge

Bring the bridge to the front of NOVA and manually lower the tool port by pressing down on the top of the port with your thumbs. Lower the tool port until the dial indicator pushes into NOVAs body.&#x20;

Turn the dial indicator on. Press and hold the **ORIGIN** button to zero the dial indicator. Take note of the value on the dial indicator.&#x20;

{% hint style="info" %}
You may not be able to get the dial indicator to exactly 0.000 but get it close and then write down what the number is.&#x20;
{% endhint %}

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/e7whlI4yCGPpDL5eVIAS/image.png" alt=""><figcaption></figcaption></figure>

Push the module hub across NOVA to the very left side.

{% embed url="<https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FYKzrL5Rz2l0ufpEa39Yc%2Fuploads%2FWnmpWQzARy2z2Rsrhu83%2FIMG_6281%20(1).mp4?alt=media&token=6d8e9704-f214-48a6-be9f-1aa114dabe7e>" %}

Now take note of the new height value.

{% hint style="info" %}
Positive value - Left side is low

Negative value - Right side is low
{% endhint %}

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/PDvlTdhFy1XibVnoPyRG/image.png" alt=""><figcaption></figcaption></figure>

{% hint style="warning" %}
Select the tab below based on if you dial indicator is displaying a positive or negative number.
{% endhint %}

{% tabs %}
{% tab title="Dial indicator is positive (Left side is low)" %}
Place the bridge levelling jig on the **LEFT** side of NOVAs bridge (Low side).&#x20;

{% hint style="info" %}
You will have received one of the bridge levelling jigs below.&#x20;
{% endhint %}

<div><figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/rxkkkFq5k3mTXPJrqQzi/image.png" alt="" width="563"><figcaption></figcaption></figure> <figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/LjM5bqSgd0hyeCCGwzGH/image.png" alt="" width="561"><figcaption></figcaption></figure></div>

Using a T25 Torx bit lslightly loosen the 2 screws securing NOVAs bridge to the mounting bracket.

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/YOhGDX2KnRnBhTEXjme8/image.png" alt=""><figcaption></figcaption></figure>

Rotate the bridge levelling jig clockwise using your finger or a M3 hex key to raise the bridge. Stop when the dial indicator reaches close to 0.000 (±0.010). &#x20;

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/eID6WL1f3yHjpiZ7cnQD/image.png" alt=""><figcaption></figcaption></figure>

Using a T25 Torx bit tighten the 2 screws securing NOVAs bridge to the mounting bracket to lock in the height. *<mark style="background-color:blue;">Torque Setting = Dewalt Driver 13</mark>*

Now push NOVAs module hub back to the very right side of NOVA to confirm that the height is within 100µm (0.100mm) of the left side.

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/3mFxhWMcCAu8BcAFvdqv/image.png" alt=""><figcaption></figcaption></figure>

{% hint style="success" %}
The bridge must be level to within 100µm (0.100mm) on either side for factory specification. We always try to get as close to 0.000 within reason!
{% endhint %}

&#x20;Move the bridge levelling jig and adjust the height as required.&#x20;
{% endtab %}

{% tab title="Dial indicator is negative (right side is low)" %}
Press and hold the **ORIGIN** button to zero the dial indicator to the left side. Take note of the value on the dial indicator.&#x20;

Push the module hub across NOVA back to the right side. The value displayed on the dial indicator should be positive.

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/rFwx0ltJDBXh9vwhLl6b/image.png" alt=""><figcaption></figcaption></figure>

Place the bridge levelling jig on the **RIGHT** side of NOVAs bridge (Low side).&#x20;

{% hint style="info" %}
You will have received one of the bridge levelling jigs below.&#x20;
{% endhint %}

<div><figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/rxkkkFq5k3mTXPJrqQzi/image.png" alt="" width="563"><figcaption></figcaption></figure> <figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/LjM5bqSgd0hyeCCGwzGH/image.png" alt="" width="561"><figcaption></figcaption></figure></div>

Using a T25 Torx bit slightly loosen the 2 screws securing NOVAs bridge to the mounting bracket.

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/YOhGDX2KnRnBhTEXjme8/image.png" alt=""><figcaption></figcaption></figure>

Rotate the bridge levelling jig clockwise using your finger or a M3 hex key to raise the bridge. Stop when the dial indicator reaches close to 0.000 (±0.010). &#x20;

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/Mt5LlZJa35QvvDuCq9bM/image.png" alt=""><figcaption></figcaption></figure>

Using a T25 Torx bit tighten the 2 screws securing NOVAs bridge to the mounting bracket to lock in the height. *<mark style="background-color:blue;">Torque Setting = Dewalt Driver 13</mark>*

Now push NOVAs module hub back to the very left side of NOVA to confirm that the height is within 100µm (0.100mm) of the left side.

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/BAPkM4YcWDBDcYCUZOjQ/image.png" alt=""><figcaption></figcaption></figure>

{% hint style="success" %}
The bridge must be level to within 100µm (0.100mm) on either side for factory specification. We always try to get as close to 0.000 within reason!
{% endhint %}

&#x20;Move the bridge levelling jig and adjust the height as required.&#x20;
{% endtab %}
{% endtabs %}
{% endstep %}
{% endstepper %}

## Reassemble NOVA

{% stepper %}
{% step %}

#### Install NOVAs cable trays

{% hint style="warning" %}
If you are using an electric screwdriver start all of these screws using a hand screwdriver to ensure they thread properly. These screws are self driving and have a risk of rethreading the frame!
{% endhint %}

With a T20 Torx bit attach NOVAs cable trays using the 8 screws and serrated washers securing NOVAs left and right cable trays (4 in the back and 4 in the front).  *<mark style="background-color:blue;">Torque Setting = Hand Tight</mark>*

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/2PDHX4qigQ6B9OenaB1Z/image.png" alt=""><figcaption></figcaption></figure>

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/F4mCIAqy4dupjl20rGlt/image.png" alt=""><figcaption></figcaption></figure>
{% endstep %}

{% step %}

#### Install the Y-carriage PCB

Replace the gantry ribbon cables on top of the cable tray.

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/4sNuBPHXqk6JKGaSKtET/image.png" alt="" width="563"><figcaption></figcaption></figure>

Using a T10 Torx bit attach the Y-carriage PCB using the 4 screws (M3 x 0.8 x 6mm Button Head). *<mark style="background-color:blue;">Torque Setting = Dewalt Driver 8</mark>*

<div><figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/MeU6hHHa9MfnnSz5ZrgQ/image.png" alt="" width="563"><figcaption></figcaption></figure> <figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/5gzAo1n2XzM8LxXo0ZXz/image.png" alt="" width="563"><figcaption></figcaption></figure></div>

Connect the 4 ribbon cables and the black motor cable to the Y-carriage PCB.

{% hint style="warning" %}
Ensure the cables are fully inserted into the connector. The blue tab should be parrallel to the connector.&#x20;
{% endhint %}

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/vrUhqPRHZ5QAfBfcV8A5/image.png" alt=""><figcaption></figcaption></figure>
{% endstep %}

{% step %}

#### Install the ribbon cable clamps

Using a T10 Torx bit install the 3 cable clamps securing NOVAs gantry ribbon cables.  *<mark style="background-color:blue;">Torque Setting = Hand Tight</mark>*

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/IBPCeT1xGYrwHwVe8azU/image.png" alt="" width="563"><figcaption></figcaption></figure>

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/LMAszVTXYerlVQmrbnwU/image.png" alt="" width="563"><figcaption></figcaption></figure>
{% endstep %}

{% step %}

#### Install NOVAs side fenders&#x20;

With a T20 Torx bit install NOVAs side fenders. There are 11 black screws that secure each of the fenders (5 on the outer side, 4 on the inner side, and 2 on the bottom side).  *<mark style="background-color:blue;">Torque Setting = Dewalt Driver 13</mark>*

Attach the bottom screws last.  *<mark style="background-color:blue;">Torque Setting = Dewalt Driver 13</mark>*

<div><figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/J01Kfq7sSPYdAPnyx5yZ/image.png" alt=""><figcaption></figcaption></figure> <figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/CIOo64Y16K6SgSUHFi3q/image.png" alt=""><figcaption></figcaption></figure></div>

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/Oez0r1fciK38nC5UGbDu/image.png" alt=""><figcaption></figcaption></figure>

{% hint style="success" %}
Ensure that the fenders are aligned properly at the back of NOVA.

You may need to pull the cable tray out with your finger to thread the screws.
{% endhint %}

<div><figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/tDviupN5hyh1TutrZi8U/image.png" alt="" width="563"><figcaption></figcaption></figure> <figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/9eKMplxJv15SLWPvjiZd/image.png" alt="" width="563"><figcaption></figcaption></figure></div>
{% endstep %}

{% step %}

#### Connect NOVAs power button

Plug in NOVAs power cable and secure the power and LED cable with a small zip tie.&#x20;

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/tu7YBtTHzVpj8b12t3kh/image.png" alt=""><figcaption></figcaption></figure>
{% endstep %}

{% step %}

#### Install NOVAs back plate

With a T20 Torx bit install NOVAs back plate. There are 6 screws (2 on the back side, 4 on the bottom of the panel) securing the back plate.  *<mark style="background-color:blue;">Torque Setting = Dewalt Driver 13</mark>*

{% hint style="success" %}
You can leave NOVAs back plate off until after you complete the calibration procedures in case of potential troubleshooting.&#x20;
{% endhint %}

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/Coe0yfNiaAkiaCa4EqIi/image.png" alt=""><figcaption></figcaption></figure>
{% endstep %}
{% endstepper %}

## Re-calibrate NOVA

With NOVA reassembled, you will need to run through a few factory calibration procedures. The order for these are as follows:

1. Camera Centering
2. Set backlash values
3. Run gantry burn in for 30 minutes
4. Test the port to port values
5. Calibrate scale and skew
6. Calibrate the camera
7. Run alignment calibration

### Camera Centering

Enter factory mode by pressing the key shift + 2 + 4 (english keyboard) and navigate to the XYZ positioner menu. Then click on the **CAMERA** button under Calibrate XYZ Position Center.

<figure><img src="https://907254262-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FUg3mbo6FhPbGOGvlUwTu%2Fuploads%2Fy7Yd0IiC856nHJrZr8Mt%2Fimage.png?alt=media&#x26;token=459026a3-7595-46d0-827c-6bddbbfb4950" alt=""><figcaption></figcaption></figure>

### Set Backlash Values

{% stepper %}
{% step %}

#### Open the console

Inside NOVA's software you can open the console by pressing the \~ key. If you're using a different language keyboard you may need to find the right key to press or use a virtual keyboard. For example in Germany it's Shift + |&#x20;

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/8UsC5hIUtlfDJgWgU1vh/image.png" alt="" width="563"><figcaption></figcaption></figure>
{% endstep %}

{% step %}

#### Run an M520 Command

In the console type `M520` and hit enter to run the command. This will display all the current factory setting values. You may need to scroll to see the results:

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/m7a53slN5KeZtUclKyYd/image.png" alt="" width="563"><figcaption></figcaption></figure>
{% endstep %}

{% step %}

#### Copy the Backlash Values

Copy and past the Backlash Compensation values to a text editor and remove all the colons (:). This will prepare the command needed (M507) to set the updated values:\
`M507 X0.031000 Y0.015000 Z0.000000 C0.000000 H0.000000`

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/jqkXwjR37vN0rpW0Nb9D/image.png" alt="" width="563"><figcaption></figcaption></figure>
{% endstep %}

{% step %}

#### Add the Values Provided

With the replacement bridge, Voltera will have provided backlash values affected by the new bridge. Insert these new values into your command ensuring all 6 decimal places are intact.

x: 0.01\
c: 0.0028\
z: 0.006

`M507 X0.010000 Y0.015000 Z0.006000 C0.002800 H0.000000`
{% endstep %}

{% step %}

#### Run M507 Command

With the M507 command prepared, copy and past it into the console and hit enter. When complete, you should se a line stating "Calibration Stored". You can double check the values were stored by running the M520 command again.
{% endstep %}
{% endstepper %}

### Gantry Burn In

{% stepper %}
{% step %}

#### Access Factory Settings

The gantry burn in is hidden in a factory settings menu. To access this you'll need to press Shift + 2 + 4 on your keyboard. If your keyboard is international, the keys you'll need to press are @ + $ where ever they are placed on your keyboard. In factory mode a few more icons are visible in the bottom left menu. Click on the tools icon to open the factory settings:

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/nhzkEM1ahFiXKWUXzaW9/image.png" alt=""><figcaption></figcaption></figure>

{% hint style="info" %}
Leave Factory Mode on until all the calibration procedures have been complete.
{% endhint %}
{% endstep %}

{% step %}

#### Run Burn In

Under Burn In, press the GANTRY button. This will have NOVA run through a range of motions for a few hours. You don't need to run it that long so you will manually stop it in the next step.

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/kh6hYxfzkkdEnXNEvELX/image.png" alt="" width="563"><figcaption></figcaption></figure>
{% endstep %}

{% step %}

#### Stop Burn In

After 30 minutes you can manually stop the Burn In. This is enough time for the new bridge to settle into its new home. To stop the Burn In press the stop button in the top menu. Once stopped, home the machines using the Home button.

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/LpyOLyCrqohayIVIb12K/image.png" alt=""><figcaption></figcaption></figure>
{% endstep %}
{% endstepper %}

### Port to Port

{% stepper %}
{% step %}

#### Place Vacuum Module

Before starting the port to port test, make sure that the vacuum module is in place on NOVA. No substrate is needed for this test.

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/GKs83O6XY9DkrJcIOm8c/NOVA_with%20vacuum%20table_1.jpg" alt="" width="563"><figcaption></figcaption></figure>
{% endstep %}

{% step %}

#### Run Port to Port for C Axis

Place the probe on the left port. Then, in the Factory Settings run the Port to Port Comparison for the C Axis. This will have the probe measure a grid of points across the vacuum module of the bed. Once complete the gantry will return to the home position.
{% endstep %}

{% step %}

#### Run Port to Port for Z Axis

Next, place the probe on the right port and run the Port to Port Comparison for the Z Axis. This will have the probe measure the same grid of points across the vacuum module of the bed. Again, once complete the gantry will return to the home position and you can remove the probe.
{% endstep %}

{% step %}

#### Download the Data

The results of this test are stored locally as a CSV file for each port in a data folder on NOVA. To access them add /data/factory to the machine's browser address. ex. cool-sea.myvoltera.io/data/factory or 10.42.2.1/data/factory

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/UB5tafajB4YjfjTRubrF/image.png" alt=""><figcaption></figcaption></figure>

Search in this folder for the CSV files of portToPort-0 and portToPort-1 with the date you ran the test and click on them to download.
{% endstep %}

{% step %}

#### Send Voltera the Files

This test is done before the replacement bridge is sent out and running it again on the new machine is an extra check to make sure nothing has happened to the bridge in transit. Because of this, the simplest way to analyze the data currently is to send it to <support@voltera.io> and we can double check it.
{% endstep %}
{% endstepper %}

### Camera Calibration

{% stepper %}
{% step %}

#### Mount the Camera Calibration Jig

Place the Camera Calibration jig over NOVAs mounting grid aligning to the 4 corners. Fasten it down with the supplied thumbscrews ensuring the jig is flat on NOVA's surface. Tow thumbscrews in opposite corners should be sufficient:

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/U2avN79iBDZTDZqdr22i/image.png" alt="" width="563"><figcaption></figcaption></figure>
{% endstep %}

{% step %}

#### Open the Camera Settings

Open the camera settings from the bottom left menu:

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/MoXNXVhLziRJfMu2mr8O/image.png" alt=""><figcaption></figcaption></figure>
{% endstep %}

{% step %}

#### Run the Calibration

Under the camera stream there is an icon that looks like a factory. Click on this to start the camera calibration.

The calibration will take a series of pictures across the surface of the jig. It will then pause for a moment to make some calculations. It will then take one final picture in the center of the jig. Once complete it will home the gantry.
{% endstep %}

{% step %}

#### Confirm the Calibration

The results of the calibration are stored locally on NOVA. To access them add /data/calibration to the machine's browser address. ex. cool-sea.myvoltera.io/data/calibration or 10.42.2.1data/calibration

You should see to jpg files labeled device-name-camera-corrected.jpg and device-name-camera-uncorrected.jpg\
\
Open the uncorrected image first by clicking on it and take note of the number of lines detected in the top left corner (ex. 31):

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/BKLvbxtauyowf83cP7hh/image.png" alt="" width="375"><figcaption></figcaption></figure>

Click back in the browser to return to the calibration files page and open the corrected image. The number of lines should be smaller than the uncorrected image (ex. 27):

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/ghfryBo9g6oIIyF50D8o/image.png" alt="" width="375"><figcaption></figcaption></figure>

{% hint style="warning" %}
If the number of lines is not smaller than the calibration needs to be run again. Double check that the jig is flat on NOVAs surface.
{% endhint %}
{% endstep %}
{% endstepper %}

### Scale & Skew

{% stepper %}
{% step %}

#### Place Standoffs

To attach the scale & skew jig, start by screwing in the standoffs into the 4 corners of the mounting grid. Hand tight is all that is needed.

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/bDtEmPPsJqX3G6e50RxW/image.png" alt="" width="563"><figcaption></figcaption></figure>
{% endstep %}

{% step %}

#### Attach Jig

Next, place the jig on top of the standoffs aligning the holes in the 4 corners. Tighten down the 4  screws to hold down the jig securely using an M3 hex key.

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/uynW9l95E8HHBDGZWNoT/image.png" alt="" width="563"><figcaption></figcaption></figure>
{% endstep %}

{% step %}

#### Run Scale & Skew

Open up the Factory Settings and click on the Scale & Skew button to run the test. This will have NOVA find each of the circles in the 4 corners of the jig and do some math to compensate for any skew. Once complete it will return to the home position.

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/xi6KyZlIjcfpyqdYGasT/image.png" alt="" width="563"><figcaption></figcaption></figure>
{% endstep %}

{% step %}

#### Confirm Calibration

Run the M520 command in the console and confirm that the Scaling and Skew values have been updated:

<figure><img src="https://content.gitbook.com/content/Ug3mbo6FhPbGOGvlUwTu/blobs/8GOe6ndAquU17jQxcCXg/image.png" alt="" width="506"><figcaption></figcaption></figure>

Once confirmed, remove the Scale & Skew jig from NOVA.
{% endstep %}
{% endstepper %}

### Alignment Calibration

Because you've attached a new bridge, the relationship between the tools center and the camera center will be deferent than previously recorded (if the calibration had been done).

To do this calibration you can follow our existing guide:

<a href="https://docs.voltera.io/docs/nova/troubleshooting/port-and-camera-alignment-calibration" class="button primary">Port & Camera Alignment Calibration</a>

{% hint style="info" %}
This is something the user can do at a later date. If they need a jig they can order it from our store for free using the discount code **NOVAJIG**:

<a href="https://store.voltera.io/discount/NOVAJIG?redirect=%2Fproducts%2Fnova-port-camera-alignment-calibration-kit" class="button secondary">ORDER A JIG</a>
{% endhint %}

## Repair Complete!

Congratulations, you have successfully replaced NOVAs bridge!

Please reach back out to our support team through email (<support@voltera.io>) or the chat to let them know everything went well. We will arrange a shipping label to return the old parts and repair tools back to us for further testing.