Battery-charge LED indicator diagnosis

The battery-charge LED indicator (hereafter referred to as LED indicator) blinks to help you diagnose and solve some computer problems.

The illustration of battery charge LED indicator is next to battery charge connector

Indicator blinking patterns

The LED indicator blinks amber first and then white continually, consisting of different blinking patterns. Each blinking pattern corresponds to an error code. For example, when the LED indicator blinks amber once The illustration of indicating amber LED indicator once and then blinks white twice , the blinking pattern corresponds to error code 0001.

Notes:

The LED indicator blinks automatically only when the error in the following table occurs.
The LED indicator blinks continually until the computer turns off. If you need to interrupt the process, press power button for a few seconds.
We recommend that you speak to our Customer Support Center before attempting to service the computer yourself so that you can be directed to the correct documentation and repair information. It might be recommended to have a Lenovo-authorized service provider repair your computer depending on the complexity of the error or fault.

Refer to the blinking patterns and error codes in the table below to solve your computer problems.

Blinking patterns	Error codes	Solutions
	0001: Reset error (platform reset not de-asserted)	Remove the ac power adapter and the removable battery if your computer has one. Then, reset the computer by doing one of the following: For models with the emergency-reset hole, insert a straightened paper clip into the emergency reset hole to cut off power supply temporarily. Then, restart the computer with ac power connected. For models without the emergency-reset hole, press and hold the power button for about seven seconds. Then, reconnect to all power resources and restart the computer. If step 1 does not work, replace the system board (service provider only).
	0002: Internal bus error	Replace the system board (service provider only).
	0283: PCI resource error	Remove PCIe devices (the M.2 card, PCIe card, and so on) (service provider only). If step 1 does not work, replace the system board (service provider only).
	0284: TCG-compliant functionality-related error (might be the BIOS code validation failure)	Replace the system board (service provider only).
	0285: TCG-compliant functionality-related error (might be the TPM initialization failure)	Replace the system board (service provider only).
	0286: Integrated graphics error	Replace the system board (service provider only).
	0288: Computer display error	Reconnect the display cable on both the system board side and the computer display side (service provider only) and check the LCD panel. If step 1 does not work, connect an external display to your computer and check the status (customer or service provider). If the external display works, replace the LCD panel (service provider only). If the external display does not work, replace the system board (service provider only).

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