Code :
- Code: U4-2
- Description: Low temperature
- Code: U4-4
- Description: Temperature
- Code: U4-5
- Description: Main PWB
- Code: U6-1
- Description: Main PWB
- Code: U6-2
- Description: Main PWB
- Code: U6-3
- Description: Main board battery
- Code: U6-4
- Description: Initialization
- Code: U8
- Description: Exposure lamp