Lenovo ThinkPad X1 2-in-1 Gen 9 Handleiding (98 Pagina's)

Handleiding

Blinking patterns Error codes Solutions

0288: Computer display error

1. Reconnect the display cable on both the

system board side and the computer

display side (service provider only) and

check the LCD panel.

2. 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).

0281: General embedded controller error Replace the system board (service provider

only).

No-beep symptoms

Table 3. No-beep symptoms

Symptom or error FRU or action, in sequence

No beep, power-on indicator on, LCD blank, and no

POST.

1. Run LCD Self Test.

2. Ensure that every connector is connected tightly and

correctly.

3. Reseat memory module.

4. Replace the system board.

No beep, power-on indicator on, and LCD blank during

POST.

1. Run LCD Self Test.

2. Reseat memory module.

3. Replace the system board.

The power-on password prompt appears. A power-on password or a supervisor password is set.

Type the password and press Enter.

No beep, power-on indicator on, LCD blank, and LED

indicators on Esc, F1 and F4 blink sequentially during

POST.

UEFI BIOS is performing memory retraining. The memory

retraining might occur if any of the following situations is

detected:

• Memory module replacement

• Total Memory Encryption setting change in UEFI BIOS

• Memory Reference Code [MRC] change when UEFI

BIOS updates

Do not press the power button to interrupt this process.

Wait a few minutes until the logo screen is displayed.

Chapter 4. Related service information 35

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