Lenovo 4221 Laptop User Manual


 
Chapter 9. Replacing FRUs
This chapter provides step-by-step instructions for replacing major FRUs.
Important
Be sure to read and understand the Chapter 2 “Safety information” on page 3 before replacing any FRU.
These precautions and guidelines will help you work safely.
FRU replacements are to be done only by trained service technicians.
Locations
Locating connectors on the front of your computer
Front connector locations shows the locations of the connectors on the front of your computer.
Figure 1. Front connector locations
1 USB connector
3 Microphone connector
2 Headphone connector
4 USB connector
Locating connectors on the rear of your computer
Rear connector locations shows the locations of the connectors on the rear of your computer. Some
connectors on the rear of your computer are color-coded to help you determine where to connect the
cables on your computer.
© Copyright Lenovo 2010, 2011
69