
Contents
Chapter 1. Important safety
information. . . . . . . . . . . . . . . . 1
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. . . . . . . . . . . . . . . 2
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
How to use error codes . . . . . . . . . . 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. Service checkout and
symptom-to-FRU index . . . . . . . . 31
Service checkout . . . . . . . . . . . . . . 31
Problem determination tips . . . . . . . . 31
Symptom-to-FRU index . . . . . . . . . . . 32
Hard disk drive boot error . . . . . . . . . 32
Power supply problems . . . . . . . . . . 33
Beep symptoms . . . . . . . . . . . . . 33
POST error codes . . . . . . . . . . . . 34
Miscellaneous error conditions . . . . . . . 35
Undetermined problems . . . . . . . . . 37
Chapter 5. Help and support . . . . . 39
Frequently asked questions . . . . . . . . . . 39
Self-help resources . . . . . . . . . . . . . 39
Call Lenovo . . . . . . . . . . . . . . . . 40
Before you contact Lenovo . . . . . . . . 40
Lenovo Customer Support Center . . . . . . 41
Purchase additional services. . . . . . . . . . 41
Chapter 6. Hardware removal and
installation . . . . . . . . . . . . . . . 43
Handling static-sensitive devices . . . . . . . . 43
Service tool kit . . . . . . . . . . . . . . . 43
Major FRUs and CRUs . . . . . . . . . . . . 44
System board . . . . . . . . . . . . . . . 46
Removing and installing hardware . . . . . . . 47
Power cord and ac power adapter. . . . . . 47
Computer cover . . . . . . . . . . . . . 49
Bottom cover . . . . . . . . . . . . . . 50
Storage drive . . . . . . . . . . . . . . 51
System fan . . . . . . . . . . . . . . . 53
Memory module . . . . . . . . . . . . . 54
M.2 solid-state drive . . . . . . . . . . . 55
Type-C card . . . . . . . . . . . . . . 56
Coin-cell battery. . . . . . . . . . . . . 57
Wi-Fi card . . . . . . . . . . . . . . . 59
Heat sink . . . . . . . . . . . . . . . 60
Microprocessor . . . . . . . . . . . . . 61
System board. . . . . . . . . . . . . . 62
Chapter . Notices and
trademarks. . . . . . . . . . . . . . . 65
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