A technician is preparing to service a corporate laptop that exhibits physical chassis deformation due to a swollen internal lithium-ion battery. Place the following service procedures in the correct sequential order from first step to last step to ensure safety and system integrity.
- 1Disconnect the external AC power adapter and press and hold the power button for 15 seconds to discharge residual system power.
- 2Remove the chassis bottom cover and disconnect the battery interface cable from the system board header.
- 3Unscrew the swollen battery assembly from the frame and place it into an anti-static, fire-resistant safety container.
- 4Install the new OEM replacement battery, connect the motherboard interface header, and reattach the chassis bottom cover.
- 5Plug in the official AC power adapter to verify charge indicator LEDs and initiate the baseline charge cycle.
Answer
The proper sequence begins with disconnecting external AC power and draining residual system power, followed by removing the chassis cover and disconnecting the internal battery cable. Next, the hazardous swollen battery is unfastened and isolated into a fire-safe storage container. The replacement battery is then mounted and the chassis is closed. Finally, the AC adapter is attached to verify charging functionality.
The correct procedural order ensures technician safety and prevents hardware damage. First, external AC power must be disconnected and residual power drained. Next, the chassis is opened and the battery header disconnected to cut internal DC power. The damaged battery can then be safely unfastened and placed into a fire-resistant container. After securing the new battery and closing the chassis, AC power is reconnected to test power delivery and charge LED indication.
Step-by-Step Solution
Key Concept
Safety procedures and sequential isolation for servicing laptop battery and power subsystems.
Estimated Time:2m 0s