# Electronics Disassembly

> Power down and separate the Head Compute Unit from the RPU so the RPU can be installed in the torso.

- Page: https://docs.menlo.ai/asimov/1/build/assembly-preparations/electronics-disassembly
- Section: Asimov › Asimov 1 › Assemble Asimov 1 › Preparation

With every actuator ID assigned, separate the Head Compute Unit and the RPU again so the RPU can be installed in the torso.

> [!WARNING]
>
> **Power down first**
>
> Turn the system off before disconnecting anything. Press the button on the battery unit to power down, then disconnect the battery from the XT90-M(2+2) connector on the RPU. Never unplug data or power cables while the system is live.

## Before You Start

- All 25 actuator IDs are assigned — see [Assign Actuator IDs](https://docs.menlo.ai/asimov/1/build/assembly-preparations/assign-actuator-ids.md).

## Disconnect the Head Compute Unit

1. Unplug the 1000 mm Ethernet cable (highlighted in blue) between the RPU and the Raspberry Pi 5 (part `700_09X`).

2. Disconnect the 1000 mm XT30-Male to XT30-Female power cable (highlighted in red) that runs between the RPU and the Head Board.

The Head Compute Unit can now be set aside for head assembly later on.

## Disconnect the Battery from the RPU

1. Remove the XT30 battery power cable (highlighted in red) from the RPU to disconnect the power fully.

The RPU is now fully disconnected from the Head Compute Unit and the battery, ready for installation later on into the torso.

**Previous:** [Assign Actuator IDs](https://docs.menlo.ai/asimov/1/build/assembly-preparations/assign-actuator-ids.md) · **Next:** [Continue to Assembly](https://docs.menlo.ai/asimov/1/build/assembly-steps.md)