Memory Module Problems - Lenovo 20HGS3KN00 User Manual

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
0287: Discrete graphics error
0288: Computer display error

Memory module problems

Print these instructions now and keep them with your computer for reference later.
Problem: My memory module is not operating properly.
Solution: Check the following items:
1. Verify that the memory module is installed and seated correctly in your computer.
Remove all added memory modules to test the computer with only the factory-installed memory
modules, and then reinstall the memory module one at a time to ensure a proper connection.
2. Check for error messages during startup.
Follow the appropriate corrective actions for power-on self-test (POST) error messages.
3. Verify that the latest UEFI BIOS for your model has been installed.
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T470s User Guide
Solutions
1. Remove all power resources (the ac power
adapter, removable battery, and coin-cell battery).
If your computer has a built-in battery, 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.
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).
1. Reinstall or replace the discrete graphics card
(service provider only).
2. Replace the system board (service provider only).
1. Reconnect the display cable on both the system
board side and the computer display side (service
provider only).
2. Replace the system board (service provider only).