# Framework Desktop LED Behavior and Blink Code Diagnostic

> Below is a table outlining the blink codes for the Framework Desktop    The red LED3 will remain on during the diagnostic test where LED4 will flash on and off

Source: https://knowledgebase.frame.work/en_us/framework-desktop-led-behavior-and-blink-code-diagnostic-Skf5ww9xe

Last updated: 2025-11-17T23:28:00.001Z

Below outlines the LED behavior and blink codes for the Framework Desktop.

LED1 will remain turned on if AC adapter is present.

LED2 is designed to indicate to the user that the 12V power on JPSU1 is properly connected. This LED should be located near the ATX12V connector JPSU1.

  

The red LED3 will remain on during the diagnostic test where LED4 will flash on and off depending on if the check passed or failed.

  

**Blink Behavior**

**Description**

Long blink

Start of diagnostic

1 - On/Off

PSU OK

2 - On/Off

12V OK

3 - On/Off

CPU deassert sleep S5

4 - On/Off

CPU deassert sleep S4

5 - On/Off

Power boot core VR

6 - On/Off

CPU Fan Detected

7 - On/Off

Thermal Sensor Detected

8 - On/Off

CPU reached S0 state

9 - On/Off

DDR initialized OK

10 - On/Off

Power glitch detected during boot

  

If you are to find a failure or have more questions about the code, please record your blink codes and reach out to our support team [HERE](https://framework.kustomer.help/contact/support-request-ryon9uAuq?_gl=1*16omm1y*sg_ga4w_production_ga*MTM0NjkzNjE2MC4xNzQ2NTUxNTc4*sg_ga4w_production_ga_PYG8X65YJJ*czE3NTM5MTI2MDQkbzg4JGcwJHQxNzUzOTEyNjA0JGo2MCRsMCRoMA..). We are always happy to help!