Lenovo Chromebook C340, Hardware Maintenance Manual

Page: 3 / 68

Contents
About this manual . . . . . . . . . . . . iii
Chapter 1. Safety information . . . . . . 1
General safety . . . . . . . . . . . . . . . . 1
Electrical safety . . . . . . . . . . . . . . . . 1
Safety inspection guide . . . . . . . . . . . . . 2
Handling devices that are sensitive to electrostatic
discharge . . . . . . . . . . . . . . . . . . 3
Grounding requirements . . . . . . . . . . . . 4
Safety notices (multilingual translations) . . . . . . 4
Chapter 2. General checkout . . . . . 21
What to do first . . . . . . . . . . . . . . . 21
CRU list . . . . . . . . . . . . . . . . . . 22
Chapter 3. Idetifying FRUs (CRUs) . . 23
Locate FRU and CRU . . . . . . . . . . . . 23
Chapter 4. Removing a FRU or
CRU . . . . . . . . . . . . . . . . . . 27
Service tools . . . . . . . . . . . . . . . . 27
General guidelines . . . . . . . . . . . . . . 27
Removal procedure for C340–11 models . . . . . 28
Remove the lower case . . . . . . . . . . 28
Remove the battery pack . . . . . . . . . 29
Remove the I/O board with cable . . . . . . 31
Remove the WLAN card. . . . . . . . . . 32
Remove the system board . . . . . . . . . 33
Remove the speakers. . . . . . . . . . . 35
Remove the thermal pad . . . . . . . . . 36
Remove the upper case . . . . . . . . . . 37
Remove the LCD module . . . . . . . . . 38
Remove the camera . . . . . . . . . . . 40
Remove the hinges. . . . . . . . . . . . 41
Remove the LVDS cable. . . . . . . . . . 42
Removal procedure for S340–14 models . . . . . 43
Remove the lower case . . . . . . . . . . 43
Remove the battery pack . . . . . . . . . 44
Remove the I/O board with cable . . . . . . 46
Remove the WLAN card. . . . . . . . . . 47
Remove the system board . . . . . . . . . 48
Remove the speakers. . . . . . . . . . . 50
Remove the thermal pad . . . . . . . . . 51
Remove the upper case . . . . . . . . . . 52
Remove the LCD module . . . . . . . . . 53
Remove the camera . . . . . . . . . . . 56
Remove the hinges. . . . . . . . . . . . 56
Remove the LVDS cable. . . . . . . . . . 58
Trademarks . . . . . . . . . . . . . . . . . lix
© Copyright Lenovo 2019
i