Arknights Endfield SOS Damaged Robot V40001 Repair Modules Solution

What to know

• Robot V40001 is an SOS repair encounter, not a combat challenge
• The task revolves around three originium circuitry puzzles
• Each puzzle uses Tetris-like placement mechanics
• Completing the repair grants resources and counts toward exploration progress

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While exploring the open zones of Arknights: Endfield, you’ll occasionally see large glowing SOS signals in the world. These mark environmental encounters rather than fights, and one of the earliest examples is the Damaged Robot V40001.

This encounter introduces the facility repair puzzle system, a logic-based minigame that appears repeatedly throughout Endfield. It’s easy to understand once explained, but confusing the first time you see it. This guide covers where to find Robot V40001, what it is, how the repair puzzles work, and how to complete all three modules cleanly.

Arknights Endfield SOS Robot V40001

Category	Details
Encounter type	SOS / Facility Repair
Robot ID	V40001
Region	Valley IV – The Hub
Area landmarks	Bridge Approach, Core AIC Area
Puzzle type	Originium circuitry (tile placement)
Total modules	3
Combat required	No
Rewards	Materials, EXP, exploration progress

Where to find the SOS Damaged Robot V40001

Robot V40001 is located in Valley IV – The Hub, near the Bridge Approach, on the outskirts of the Core AIC Area. On the map, it appears as a yellow SOS marker slightly off the main road.

When you approach the location, you’ll see a damaged Delta-series robot standing near a fence and cliff edge, emitting a vertical SOS beam. Interacting with it opens the repair interface instead of triggering combat.

This robot is hard to miss if you explore naturally, but it’s also easy to postpone and forget—there’s no forced quest marker pushing you to finish it immediately.

What is Robot V40001 in Arknights Endfield

Robot V40001 is a Delta general-purpose robot whose originium circuitry has been damaged. According to the facility info prompt, the robot is non-functional and requires direct intervention from the Endministrator to restore its systems.

From a gameplay perspective, this encounter serves three purposes:

• Teaching the originium circuitry repair system
• Rewarding exploration and curiosity
• Providing non-combat progression opportunities

Unlike bosses or elite enemies, this challenge tests spatial reasoning rather than reflexes or damage output.

Understanding the originium circuitry repair system

Once you interact with the robot and select Repair, you’ll be taken into the Facility Repair interface. This is where the puzzle begins.

The system is split into three modules, each representing a damaged section of circuitry. You must complete all three to fully repair the robot.

Core mechanics explained

Each module presents a square grid with:

• Fixed connection points along the edges
• Empty slots inside the grid
• One or more circuit-shaped components

Your goal is to drag and rotate components so that the green circuitry connects all required endpoints without overlap or gaps.

If the circuit forms a complete, valid path, the module is cleared.

Controls you should know

• Drag to move component
• Rotate component to change orientation
• Switch display mode to view grid clarity
• Reset to retry if placement fails

The game is generous here—there is no time limit, no penalty for mistakes, and unlimited retries.

How to complete the Robot V40001 repair puzzle

Step 1: Find and interact with the robot

Approach the SOS signal and interact with Robot V40001. You’ll see a message indicating originium circuitry damage and a prompt to begin repairs.

Confirm the interaction to enter the repair interface.

Step 2: Complete Originium Circuitry Module 1

The first module is intentionally simple. It introduces the idea of circuit continuity with minimal grid complexity.

You’ll usually receive a single L-shaped or bent component. Rotate it until the circuit lines match the entry and exit points on the grid. Once all endpoints are connected and the path lights up green, the module completes automatically.

This module exists to teach rotation and placement—don’t overthink it.

Step 3: Complete Originium Circuitry Module 2

The second module increases complexity by introducing:

• Multiple connection points
• Tighter grid spacing
• More precise placement requirements

Here, the circuit shape often needs to be rotated carefully to avoid blocking other paths. Pay attention to the small green indicators on the grid edges—they show where connections must terminate.

If the circuit doesn’t light up fully, it means one endpoint is either misaligned or disconnected.

Step 4: Complete Originium Circuitry Module 3

The third and final module is the most complex but still manageable. It typically combines:

• Irregular circuit shapes
• Limited placement space
• Exact orientation requirements

At this stage, it helps to visualize the circuit as a continuous line before placing it. Rotate first, then drag into position, rather than adjusting endlessly inside the grid.

Once the final module is completed, the interface confirms successful repairs and exits automatically.

Step 5: Confirm repair and collect rewards

After all three modules are completed, Robot V40001 powers back on. You’ll see a Repair Successful notification, and rewards are granted instantly.

There’s no extra dialogue or follow-up objective—the encounter ends cleanly once rewards are issued.

Common mistakes players make

The most common mistake is assuming the puzzle works like a traditional Tetris game. Unlike Tetris, you are not filling space, you are connecting paths. Empty tiles are fine as long as the circuit is continuous.

Another frequent issue is forgetting to rotate components. Many pieces will never fit correctly unless rotated into a specific orientation.

Finally, some players abandon the repair thinking it’s optional fluff. While it is optional, skipping these encounters slows overall exploration progress and resource gain.

Rewards from repairing Robot V40001

Reward	Quantity	Type	Use
Protoprism	20	Currency / Material	Used for progression systems and upgrades
Intermediate Combat Record	2	EXP Material	Grants operator combat experience
Arms INSP Kit	2	Upgrade Material	Used for weapon or arms inspection upgrades
Oroberyl	20	Gacha Currency	Standard gacha currency used for Headhunting (character pulls).

The exact material types can vary depending on progression, but the rewards are always worth the minimal time investment.

Why SOS repair encounters matter

SOS encounters like Robot V40001 are part of Endfield’s broader design philosophy. Not every challenge is combat-focused, and not every reward comes from fighting enemies.

These repairs:

• Break up combat pacing
• Reward exploration-focused players
• Teach systems reused later in higher-stakes contexts

Later facility repairs may involve larger grids, more components, or environmental pressure nearby. Learning the system here makes future encounters much easier.

How this puzzle prepares you for later content

As you progress, originium circuitry puzzles appear in:

• Larger facilities
• Optional high-value areas
• Side objectives tied to rare resources

While the core mechanic stays the same, complexity scales. Robot V40001 is effectively the tutorial version, making it one of the most important SOS encounters to complete early.

Wrapping up the Robot V40001 repair puzzle

The SOS Damaged Robot V40001 encounter in Arknights: Endfield is a clean introduction to the facility repair system. With no combat pressure and unlimited retries, it encourages you to slow down and engage with Endfield’s logic-based mechanics.

Find the robot, complete the three circuitry modules, and collect your rewards. It’s quick, satisfying, and sets you up for more advanced puzzles later in the game.

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We hope this repair Robot V40001 puzzle solutions guide for Arknights: Endfield offered all the clarity you were looking for and made your experience smoother. If you have any feedback, suggestions, or questions, drop them in the comments below. We actively read and respond, so feel free to reach out whenever you need extra help or guidance.