Lenovo ThinkPad Hardware Maintenance Manual page 44

2. Download the proper diagnostic app and install it on your smartphone.
3. Run the diagnostic app and place the smartphone near the computer.
4. Press the Fn key on your computer to emit the beep again. The diagnostic app decodes the beep error
and shows possible solutions on the smartphone.
The following section describes some beep errors and the corresponding solutions.
Note: Do not attempt to service a product yourself unless instructed to do so by the Customer Support
Center or product documentation. Only use a Lenovo-authorized service provider to repair your product.
Error codes
0001: Reset error (platform reset not de-asserted)
0002: Internal bus error
0281: General embedded controller error
0282: Memory module error
0283: PCI resource error
0284: TCG-compliant functionality-related error (might be
the BIOS code validation failure)
0285: TCG-compliant functionality-related error (might be
the TPM initialization failure)
0286: Integrated graphics error
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P1 Gen 4 and X1 Extreme Gen 4 Hardware Maintenance Manual
Solutions
1. Remove all power resources: the ac power
adapter, and the coin-cell battery (service provider
only). Reset the computer by inserting a
straightened paper clip into the emergency-reset
hole. Wait for one minute. Then reconnect all
power resources.
2. Replace the system board (service provider only).
Replace the system board (service provider only).
Replace the system board (service provider only).
1. Reinstall or replace the memory module (service
provider only).
2. Replace the system board (service provider only).
1. Remove PCIe devices (the M.2 card, PCIe card,
and so on) (service provider only).
2. Replace the system board (service provider only).
Replace the system board (service provider only).
Replace the system board (service provider only).
Replace the system board (service provider only).