Lenovo V50t Gen 2, Hardware Maintenance Manual

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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 . . . . . . . . . . . . . . . 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
How to use error codes . . . . . . . . . . 28
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. Troubleshooting and
diagnostics. . . . . . . . . . . . . . . 39
Basic procedure for resolving computer
problems . . . . . . . . . . . . . . . . . 39
Troubleshooting
. . . . . . . . . . . . . . 39
Startup problems . . . . . . . . . . . . 40
Audio problems . . . . . . . . . . . . . 41
Network problems . . . . . . . . . . . . 41
Performance problems . . . . . . . . . . 44
Storage drive problems . . . . . . . . . . 45
CD or DVD problems . . . . . . . . . . . 45
Serial connector problems . . . . . . . . . 46
USB device problems
. . . . . . . . . . 46
Software problems . . . . . . . . . . . . 47
Diagnostics . . . . . . . . . . . . . . . . 47
Lenovo diagnostic tools . . . . . . . . . . 47
UEFI diagnostic program . . . . . . . . . 47
The Vantage app
. . . . . . . . . . . . 48
Chapter 6. Hardware removal and
installation . . . . . . . . . . . . . . . 49
Handling static-sensitive devices . . . . . . . . 49
Service tool kit . . . . . . . . . . . . . . . 49
Major FRUs and CRUs . . . . . . . . . . . . 50
System board
. . . . . . . . . . . . . . . 53
Removing and installing hardware . . . . . . . 53
External options . . . . . . . . . . . . . 54
Computer cover . . . . . . . . . . . . . 54
Front bezel . . . . . . . . . . . . . . . 54
Optical drive . . . . . . . . . . . . . . 55
Drive bay assembly
. . . . . . . . . . . 56
Hard disk drive . . . . . . . . . . . . . 57
Memory module . . . . . . . . . . . . . 58
Coin-cell battery . . . . . . . . . . . . . 60
PCI Express card . . . . . . . . . . . . 61
M.2 solid-state drive . . . . . . . . . . . 62
Power supply assembly . . . . . . . . . . 63
Wi-Fi card . . . . . . . . . . . . . . . 64
Internal speaker . . . . . . . . . . . . . 65
Thermal sensor . . . . . . . . . . . . . 66
Front fan . . . . . . . . . . . . . . . . 66
Rear fan . . . . . . . . . . . . . . . . 67
Front Wi-Fi antenna and cable . . . . . . . 68
Rear Wi-Fi antenna and cable . . . . . . . 69
Cover presence switch . . . . . . . . . . 70
Front I/O bracket . . . . . . . . . . . . 70
Card reader
. . . . . . . . . . . . . . 73
Heat sink and fan assembly . . . . . . . . 74
Microprocessor . . . . . . . . . . . . . 75
System board . . . . . . . . . . . . . . 75
Chapter 7. Notices and
trademarks . . . . . . . . . . . . . . . 79
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