Lenovo ThinkPad Edge E320 Hardware Maintenance Manual page 71

• If a system board is dropped, you must test it, using PC-Doctor for DOS, to make sure that the HDD Active
Protection System™ still functions.
Note: If the test shows that the HDD Active Protection System is not functioning, be sure to document the drop in a
reject report, and replace the system board.
• Avoid rough handling of any kind.
• At every point in the process, be sure not to drop or stack the system board.
• If you put a system board down, be sure to put it only on a padded surface such as an ESD mat or a corrugated
conductive surface.
After replacing the system board, run PC-Doctor for DOS to make sure that the HDD Active Protection System
still functions. The procedure is as follows:
1. Place the computer on a horizontal surface.
2. Run Diagnostics ➙ ThinkPad Devices ➙ HDD Active Protection Test.
Attention: Do not apply physical shock to the computer while the test is running.
For access, remove these FRUs in order:
• "1010 Battery pack" on page 48
• "1020 Hard disk drive door" on page 49
• "1040 Hard disk drive or solid state drive assembly" on page 51
• "1050 PCI Express Mini Card for wireless LAN" on page 53
• "1060 PCI Express Mini Card for wireless WAN for ThinkPad Edge E320" on page 55
• "1080 Backup battery" on page 57
• "1090 Keyboard" on page 57
• "1100 Keyboard bezel assembly and power button board" on page 60
• "1110 Bluetooth daughter card" on page 62
Removal steps of fan assembly
Note: Loosen the screws
For integrated fan assembly:
1 in order as shown in the following figures.
.
Chapter 8 Removing and replacing a FRU
65