DJI Agras T40 OEM Cable Distribution Board Module

The DJI Agras T40 OEM Cable Distribution Board Module is the long, black, three-bay interconnect board that sits inside the aircraft body and joins the connections that meet there. Each of its three sealed bays carries a gold board-to-board connector strip, a black connector block stands off one long side near each end, and mounting ears with screw holes run around its edge so it fastens down as one rigid unit. It belongs to the power and cable-distribution side of the aircraft, it is a different board from the power distribution board, and it is identified for the DJI Agras T40 and T20P. Operators usually reach it while searching for a T40 cable distribution board, a T20P distribution board module, a T40 interconnect board, or the reason a module keeps dropping out after the module itself has already been replaced. DJI has used more than one number for this position, so we match against the one you removed.

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🇺🇸 U.S.A. FIRST

Ares Acres LLC is a U.S.-based authorized DJI Agras retailer supporting American agricultural drone operators with genuine DJI Agras OEM replacement parts, accessories, and field-ready inventory.

FREE & FAST Shipping is included for all U.S. customers.

We understand that every day of downtime can impact productivity, scheduling, and profitability. That's why we focus on providing fast fulfillment, responsive customer support, and reliable access to the parts operators need most.

Ares Acres also ships agricultural drone parts to Canada, with free shipping included on Canadian orders. Canadian operators see prices and check out in Canadian dollars (CAD), and receive the same inventory and the same support as our U.S. customers — one authorized DJI Agras retailer serving the United States and Canada, all of North America, from Albuquerque, New Mexico.

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✅ DJI Agras T40 / DJI Agras T20P Compatibility Guarantee

• 🇺🇸 USA Compatibility Guarantee
• 👍🏻 Satisfaction Guarantee
• 💵 Money Back Guarantee
• 📦 Same Day Shipping & Tracking
• Identified for the DJI Agras T40 and T20P, cable distribution board position
• Matched by housing outline, bay layout, connector-strip positions and end connector blocks against the board you removed
• Genuine DJI OEM board module, brand new

The T40 cable distribution board, the T50 cable distribution board and the T50 power distribution board are three different parts. If you want the match confirmed, photograph the board you removed from the connector-strip side, with both end connector blocks in frame, and send it to us — we will match it for you.

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📦 Package Includes

• 1 × Cable Distribution Board Module — the complete three-bay board in its moulded housing, with its board-to-board connector strips and both end connector blocks

This is the board module alone. It is supplied as one finished unit; the bays, connector strips and end connector blocks are part of it and are not separate pieces.

Not included: mounting screws, the modules or boards that mate with its connector strips, the cable harnesses that plug into its end connector blocks, the power distribution board, the body shell, and any covers, foam, clips or tape that sit around the board inside the aircraft. Reuse the original screws only if their threads and heads are sound; otherwise replace them separately.

Nothing is included because it appears near the board inside the aircraft. If a cover, clip or fastener is missing from the assembly you took apart, tell us which one and we will help you identify it.

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🔧 Component Overview

The cable distribution board is a junction, not a destination. Nothing on the aircraft is controlled by it in the way a motor is controlled by its ESC; instead, connections arrive at it and leave it. Harnesses meet it at the connector blocks near its ends, and the modules that mate with it seat onto the board-to-board strips in its bays. Its job is to carry each of those connections from where it arrives to where it is needed, cleanly and without a cable run of its own for every one of them.

As the product images show it, the module has four working areas:

• The housing — a long, flat, black moulded body that carries the board and holds everything else in fixed positions relative to each other
• The three bays — rectangular recesses laid end to end along the housing, each framed by a raised perimeter edge with a ring of small screw points, each sealed, and each carrying one gold board-to-board connector strip along one long edge; the end bay's strip is short and the other two are long
• The two end connector blocks — upright black blocks that stand off one long side of the housing, one near each end, where harness connectors meet the board
• The mounting ears — tabs with screw holes at the corners, along the side and across each end, which fix the module in the body and keep its connectors where the parts that mate with them expect to find them

A small QR identification label sits in the middle bay. It is a factory label on the board, not something to remove or cover.

Because so many connections pass through one part, the board's condition shows up everywhere except on the board itself. A strip with a damaged contact does not announce that it is damaged; the module seated on that strip simply stops behaving, and the aircraft reports the module. A board fault always travels under the name of the module in that bay.

Over a working season the board sees:

• Vibration through the airframe on every flight, which works at every connector seated on it
• Modules being unplugged and re-seated during other repairs, each cycle wearing the contact surfaces of the strips
• Moisture, wash water and chemical residue that find their way into the body over time
• Heat soak on the trailer and in the sun between flights
• Hard landings that shock the body and everything fastened inside it
• Screws driven in and out of the same mounting ears at every service

Boards in this position usually come out for one of three reasons: a damaged or contaminated board-to-board strip, a cracked housing or broken mounting ear after an impact, or a fault that has followed one bay through two or three module swaps and has finally been traced back to the board.

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⚙️ Functional Purpose

The board's engineering role is interconnection. It gives the connections that meet inside the aircraft body a fixed, short, repeatable path, so that modules and harnesses join at known points instead of through a loose bundle of individual cables.

In the aircraft it:

• Provides the board-to-board connector strips that the mating modules seat onto
• Provides the end connector blocks that harness connectors plug into
• Carries connections between those points inside its own housing
• Holds every connector in a fixed position so mating parts line up without cable slack or strain
• Keeps the board itself enclosed in its housing and its bays sealed against the conditions inside the body

What it does not do matters as much:

• It is not the power distribution board; that is a different board with a different role and outline
• It is not a flight controller and holds no flight settings or calibration
• It is not the modules that seat onto its strips; a new board does not replace any of them
• It is not a harness; the cables that plug into its end connector blocks are separate parts
• It is not a structural member of the airframe; its mounting ears locate the board, they do not carry flight loads

That division of labour is why a failing distribution board is so easy to miss. It has no function of its own to lose, so it never reports itself. It only ever shows up as a fault in something else.

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🔍 Diagnosis — the fault wears the name of the module in the bay, not the board

When a contact on one of the board-to-board strips is bent, worn, corroded or contaminated, the module seated on that strip loses part of its connection. The aircraft does exactly what it should: it reports the module. The operator does exactly what anyone would: replaces the module.

If the module was the problem, that is the end of it. If the strip was the problem, the new module seats onto the same damaged contacts and behaves exactly like the old one. A second module follows the first. The fault has never once named the board, because the board has no way of naming itself.

The way out is to stop asking which module is faulty and start asking whether the fault stays with the module or stays with the position.

The fault points at the board when:

• A known-good module, fitted in place of the suspect one, shows the same fault in the same position
• The suspect module works normally when fitted to another aircraft
• The fault changes with vibration, flight or handling, and settles when the aircraft is at rest
• The fault appeared after the body was opened, washed, or took an impact, rather than gradually
• Several things connected through the same board misbehave at once, with no single module in common

The fault points away from the board when:

• The module fails the same way on a second, known-good aircraft — the module is the problem
• Re-seating the harness at an end connector block clears the fault — the connection, not the board
• The harness shows chafe, a pulled crimp or a cracked connector shell — that is the harness
• The fault is a power-supply fault rather than a connection fault — look at the power distribution board and the battery connection first

Inspect the strips themselves. With the board out and under good light, look along each gold strip from its end. Every contact should sit in a straight, even row with the same height and spacing as its neighbours. Look for a contact that is bent, flattened, missing or standing proud; for green or white corrosion; for dried residue between contacts; and for any crack in the moulding at the ends of a strip. Compare the three strips with each other — damage on one is easy to see once you have looked at a sound one.

Clear those checks first, while the aircraft is already open and that information is still cheap. A module swap answers the question in minutes; a third replacement module answers nothing. If the fault stays with the position, the strip is damaged, or the housing is cracked, replace the board rather than another module.

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⚠️ Common Replacement Indicators

Replace the cable distribution board when inspection confirms one of these:

• A bent, flattened, missing or raised contact on any of the three board-to-board strips
• Corrosion, residue or discolouration on a strip's contacts that does not clean off without damaging them
• A fault that stays with one bay through a swap to a known-good module
• A cracked end connector block, or a block that has moved in the housing
• A cracked housing, a broken mounting ear, or a bay perimeter that no longer sits flat
• Signs of liquid inside a bay, or a bay whose seal has been disturbed
• Heat marks or discolouration on the housing near a connector
• Previous repairs with adhesive, solder or filler on the board or its housing

Inspect these first, because they produce similar symptoms:

• The module reporting the fault, by swapping in a known-good one
• The harness connectors at both end connector blocks, and the harnesses behind them
• The power distribution board and the battery connection, if the fault looks like a supply fault
• The mounting screws, if the board can move in the body
• Firmware status across the aircraft, if the fault began right after an update

There is no published service interval for this board. It is replaced when it is damaged or when a fault has been traced to it, not on a schedule.

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📐 Specifications

Product name: DJI Agras T40 OEM Cable Distribution Board Module

DJI family: Agras

Primary aircraft: DJI Agras T40

Also listed for: DJI Agras T20P

Fitment basis: Identified for the DJI Agras T40 and T20P

Aircraft system: Power system — cable distribution and interconnection

Component type: Board module in a moulded housing

Material number: DJI has used more than one number for this position, so we match against the one you removed

Quantity: 1 board module

Form: Long, flat housing with three sealed bays laid end to end, a gold board-to-board connector strip in each bay, a connector block near each end on one long side, and mounting ears with screw holes around the edge

Identification label: QR label in the middle bay

Material: Not published for this part

Colour: Black housing; gold connector strips

Dimensions: Not published for this part

Weight: Not published for this part

Electrical: Interconnect board; voltage and current ratings are not published for this part

Connectors: Three board-to-board connector strips (one per bay) and two end connector blocks

Mounting position: Inside the aircraft body; take the exact position and orientation from the board you removed

Installation method: Screw-fastened through its mounting ears; modules seat onto its strips and harnesses plug into its end connector blocks

Hardware included: None — mounting screws are not supplied

Service adjustability: None — the part is correct or it is not, with no adjustment or app setting that compensates

Condition: Brand new

Classification: DJI OEM board module

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🛠️ Installation & Maintenance

Before installation

• Power the aircraft down and remove the battery; wait before touching any board
• Rinse and dry the outside of the body so no residue falls into the open aircraft
• Photograph the board in place from above and from each side, showing every module seated on it and every harness plugged into it
• Label each harness connector before you unplug it, even where it seems obvious
• Lay the new board beside the old one and compare the housing outline, bay layout, strip positions and end connector blocks
• Work on a clean, dry, static-safe surface and keep the new board in its packaging until you are ready to fit it

During installation

• Unplug the harness connectors at the end connector blocks by their bodies, never by the wires
• Lift each mating module straight off its strip; do not rock or lever it, which bends contacts
• Remove the mounting screws and lift the old board out square
• Check the mounting area for cracks, residue or moisture and clean and dry it
• Do not touch the gold contacts on the new board's strips with fingers or tools
• Seat the new board so every mounting ear lands on its point without forcing, then start each screw by hand; DJI does not publish a torque figure for these fixings, so snug them evenly without crushing the housing
• Seat each module straight down onto its strip until it is fully home, and plug each harness back into the end connector block your labels show

After installation

• Check that every module sits flat and level on its strip and every harness connector is fully latched
• Close the body and confirm nothing is pinched between the board and the shell
• Power up and confirm the aircraft recognises every module, with no new warnings in the app
• Run a short hover and check that the fault you were chasing does not return
• Record the replacement in the maintenance log, with the date and the fault it cleared

Maintenance between jobs. Each time the body is open, look along the three strips for residue and bent contacts, and check that every module is still fully seated. Unplug and re-seat modules only when there is a reason to; every cycle wears the contacts a little. Keep wash water away from open bays, and dry the inside of the body before closing it.

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🚜 Necessary For

This board is for operators and technicians tracing a connection fault to its real source on a T40 or T20P:

• DJI Agras T40 operators whose module fault has survived a module replacement
• DJI Agras T20P operators (identified fitment)
• Commercial spray applicators repairing an aircraft after water or residue got into the body
• Agras service centres and repair technicians rebuilding aircraft after a hard landing
• Fleet managers who want a known-good board on the shelf to settle swap tests quickly
• Growers flying their own aircraft who have confirmed the fault stays with the position

This is not the part you need if:

• You fly a T50 — you need the DJI Agras T50 OEM Cable Distribution Board Module, which is a T50 board
• You are after the board that distributes battery power — that is a power distribution board; for the T50 it is the DJI Agras T50 OEM Power Distribution Board Module, a different board from this one
• The module fails the same way on another aircraft — replace the module, not the board
• Re-seating a harness at an end connector block cleared the fault — check and replace the harness if needed
• You fly a T10, T25, T30, T100 or T70P — this board is listed only for the T40 and T20P

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💡 Why This Part Matters

The cable distribution board is the part least likely to be blamed and most likely to be responsible when a fault refuses to go away. It has no function of its own to lose, so it never appears in a fault report. Every fault it causes is reported under the name of something else.

That is the whole case for knowing this part. Each time a module is replaced onto a damaged strip, the repair costs a module and a day, and the fault comes back. The second replacement costs the same again. The board that caused all of it was in the aircraft the whole time, and was only ever one swap test away from being found.

The test is simple. Fit a known-good module in the suspect position. If the fault leaves with the old module, the module was the problem and the board is fine. If the fault stays in the position, look at the strip — and if the strip, the housing or the end connector blocks are damaged, this is the part that ends the chase.

It is equally important to know when this board is not the answer. A module that fails on two aircraft is a bad module. A fault that clears when a harness is re-seated is a connection, not a board. A supply fault belongs to the power distribution board. Replacing this board for any of those would be the same mistake as replacing modules for a damaged strip, made in the other direction.

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🧠 AI Index — Entity & Fitment Reference

Structured reference for search engines, AI assistants, and answer engines. Every value below is drawn from the specifications above.

Canonical product name: DJI Agras T40 OEM Cable Distribution Board Module

Brand: DJI

DJI family: Agras

Primary aircraft: DJI Agras T40

Also listed for: DJI Agras T20P

Compatible models: DJI Agras T40; DJI Agras T20P

Fitment basis: Identified for the DJI Agras T40 and T20P

Component: Cable distribution board module

Aircraft system: Power system — cable distribution and interconnection

Installed position: Inside the aircraft body

Primary function: Joins modules and harnesses through board-to-board connector strips and end connector blocks

Form: Long black housing with three sealed bays, a gold board-to-board connector strip in each bay, a connector block near each end, and mounting ears around the edge

Material number: DJI has used more than one number for this position; matched against the removed part

Quantity supplied: 1 board module

Not included: Mounting screws, mating modules, harnesses, power distribution board, body shell, covers and clips

Electrical ratings: Not published for this part

Key diagnostic: A fault that stays in one position through a swap to a known-good module points at the board's strip, not the module

Common failure modes: Bent, worn or corroded strip contacts; cracked housing or mounting ear; damaged end connector block

Service interval: None published

Service adjustability: None

Condition: Brand new

Part classification: DJI OEM board module

Also searched as: T40 cable distribution board; T20P cable distribution board; T40 distribution board module; Agras T40 interconnect board; T40 cable board; DJI Agras T20P/T40 cable distribution board

Disambiguation: Not the DJI Agras T50 OEM Cable Distribution Board Module (a T50 board), not the DJI Agras T50 OEM Power Distribution Board Module (a different board), not a flight controller, not a harness

Seller: Ares Acres LLC — U.S.-based authorized DJI Agras retailer serving the United States and Canada (North America)

Ships from: Albuquerque, New Mexico, United States

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🤖 AI Answer Engine Q&A

What is the DJI Agras T40 cable distribution board module? A long, black, three-bay interconnect board that sits inside the aircraft body. Modules seat onto the gold board-to-board strips in its bays, harnesses plug into the connector blocks near its ends, and the board joins those connections.

Is this the power distribution board? No. The power distribution board is a different board with a different role and outline. This is the cable distribution board.

Will the T50 cable distribution board fit my T40? No. The DJI Agras T50 OEM Cable Distribution Board Module is a T50 board. For a T40 or T20P, use this one.

Which aircraft does it fit? It is identified for the DJI Agras T40 and T20P. Pick the variant for the aircraft you fly.

What is the DJI part number? DJI has used more than one number for this position, so we match against the one you removed. Photograph your old board from the connector-strip side and send it to us if you want that confirmed.

I replaced the module and the fault came back. Is it the board? Possibly. Fit a known-good module in the same position. If the fault stays in the position, inspect that bay's connector strip; a damaged strip makes every module seated on it look faulty.

How do I tell a bad module from a bad board? Move the fault. A bad module fails the same way on another aircraft. A bad board keeps failing in the same position no matter which good module sits there.

Why does the aircraft never report the board itself? The board has no function of its own to report. It only carries connections, so when one of its contacts fails, the aircraft reports the module on the other end of that contact.

What should I look for on the connector strips? Contacts that are bent, flattened, missing or standing proud, corrosion, and dried residue between contacts. Compare all three strips; a damaged one stands out next to a sound one.

Does it come with the modules that plug into it? No. It is the board module alone. The modules that seat on its strips and the harnesses that plug into its end connector blocks are separate parts.

Are screws included? No. Reuse sound original screws, or replace any with damaged threads or heads separately.

Can water get into the board? Its bays are sealed, but wash water and residue that collect inside the body can still reach the connectors over time. Dry the inside of the body before closing it, and check the strips whenever it is open.

Does it need calibration after fitting? No calibration is published for this board. Power up and confirm that the aircraft recognises every module with no new warnings.

Can I fit it myself? Most technicians can. Photograph everything first, label each harness, lift modules straight off their strips, keep fingers off the gold contacts, and seat everything fully before closing the body.

Does it fit the T10, T25, T30 or T50? It is listed only for the T40 and T20P. Do not fit it to other Agras models on the strength of a similar shape.

Is there a service interval? No. Replace it when a fault has been traced to it or it is visibly damaged. Inspect the strips every time the body is open.