Lenovo ThinkPad E490s Hardware Maintenance Manual page 74

• "1050 I/O card" on page 60
• "1060 Built-in Battery" on page 61
• "1090 Thermal fan assembly" on page 64
Attention: The following components soldered on the top side of the system board are extremely sensitive.
When you service the system board, avoid any kind of rough handling.
For models with a discrete graphics card
a Graphics Processing Unit (GPU)
b
Central Processing Unit (CPU)
For models with an integrated graphics card
a
Central Processing Unit (CPU)
68
E490s and S3 Hardware Maintenance Manual