
Contents
About this manual . . . . . . . . . . . . iii
Chapter . Important safety
information. . . . . . . . . . . . . . . .
General safety . . . . . . . . . . . . . . . . 1
Electrical safety . . . . . . . . . . . . . . . . 2
Safety inspection guide . . . . . . . . . . . . . 3
Handling electrostatic discharge-sensitive
devices . . . . . . . . . . . . . . . . . . . 4
Grounding requirements . . . . . . . . . . . . 4
Safety notices (multi-lingual translations) . . . . . . 4
Chapter 2. Important service
information. . . . . . . . . . . . . . . 27
Strategy for replacing FRUs . . . . . . . . . . 27
Strategy for replacing a hard disk drive or a
solid-state drive . . . . . . . . . . . . . 27
Important notice for replacing a system
board . . . . . . . . . . . . . . . . . 27
Strategy for replacing FRUs for CTO, special-bid,
and standard models. . . . . . . . . . . . . 28
Product definition . . . . . . . . . . . . 28
FRU identification . . . . . . . . . . . . 28
Chapter 3. Product overview . . . . . 29
Front . . . . . . . . . . . . . . . . . . . 29
Rear . . . . . . . . . . . . . . . . . . . 30
Chapter 4. Create and use a USB
repair shim . . . . . . . . . . . . . . . 3
What is a USB repair shim? . . . . . . . . . . 31
Create a USB repair shim . . . . . . . . . . . 31
Use the USB repair shim . . . . . . . . . . . 31
Chapter 5. Hardware removal and
installation . . . . . . . . . . . . . . . 33
Handling static-sensitive devices . . . . . . . . 33
Service tool kit . . . . . . . . . . . . . . . 33
Major FRUs and CRUs . . . . . . . . . . . . 34
System board . . . . . . . . . . . . . . . 36
Removing and installing hardware . . . . . . . 37
Power adapter and power cord . . . . . . . 37
Power adapter bracket . . . . . . . . . . 38
VESA mount bracket . . . . . . . . . . . 39
Vertical stand . . . . . . . . . . . . . . 40
External Wi-Fi antenna . . . . . . . . . . 41
Front cover . . . . . . . . . . . . . . . 41
System fan and heat sink . . . . . . . . . 42
ThinkCentre LE cable . . . . . . . . . . 43
Reset board kit . . . . . . . . . . . . . 43
Board-to-Board module. . . . . . . . . . 44
Bottom cover . . . . . . . . . . . . . . 45
M.2 solid-state drive . . . . . . . . . . . 45
Memory module . . . . . . . . . . . . . 46
Front Wi-Fi antenna . . . . . . . . . . . 48
Front Wi-Fi antenna bracket . . . . . . . . 49
Rear Wi-Fi antenna. . . . . . . . . . . . 50
Wi-Fi card and Wi-Fi cover. . . . . . . . . 50
System board. . . . . . . . . . . . . . 51
Chapter 6. Notices and
trademarks. . . . . . . . . . . . . . . 53
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