Lenovo 42962YU User Manual - Page 3
Contents, Status indicators - battery
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Contents About this manual iii Chapter 1. Safety information . . . . . 1 General safety 1 Electrical safety 2 Safety inspection guide 3 Handling devices that are sensitive to electrostatic discharge 3 Grounding requirements 4 Safety notices (multilingual translations 4 Laser compliance statement (multilingual translations 16 Chapter 2. Important service information 23 Strategy for replacing FRUs 23 Strategy for replacing a hard disk drive . . . 24 Important notice for replacing a system board 24 How to use error message 24 Strategy for replacing FRUs for CTO, CMV, and GAV 25 Product definition 25 FRU identification for CTO, CMV, and GAV products 25 Chapter 3. General checkout . . . . . 27 What to do first 27 Checkout guide 28 Diagnostics using PC-Doctor for DOS. . . . 28 Lenovo ThinkVantage Toolbox 31 PC-Doctor for Windows 31 PC-Doctor for Rescue and Recovery . . . . 31 FRU tests 31 Power system checkout 33 Checking the ac power adapter 33 Checking operational charging 33 Checking the battery pack 34 Checking the backup battery 34 Chapter 4. Related service information 37 Restoring the factory contents by using Product Recovery discs 37 Restoring the factory contents by using Recovery Disc Set 37 Passwords 39 Power-on password 39 Hard-disk password 39 © Copyright Lenovo 2011 Supervisor password 39 How to remove the power-on password . . . 39 How to remove the hard-disk password . . . 40 Power management 40 Screen blank mode 40 Sleep (Standby) mode 41 Hibernation mode 41 Symptom-to-FRU index 42 Numeric error codes 43 Error messages 47 Beep symptoms 48 No-beep symptoms 49 LCD-related symptoms 49 Intermittent problems 49 Undetermined problems 50 Chapter 5. Status indicators . . . . . 51 Chapter 6. Fn key combinations . . . 53 Chapter 7. FRU replacement notices 55 Screw notices 55 Retaining serial numbers 56 Restoring the serial number of the system unit 56 Retaining the UUID 57 Reading or writing the ECA information . . . 57 Chapter 8. Removing and replacing a FRU 59 Before servicing ThinkPad X220 Tablet and X220i Tablet models 60 1010 Digitizer pen 61 1020 Battery pack 61 1030 Hard disk drive (HDD) and solid state drive (SSD 62 1040 DIMM 64 1050 Hinge caps 66 1060 Keyboard 67 1070 Palm rest 70 1080 Backup battery 72 1090 PCI Express Mini Card for wireless LAN/WiMAX 74 1100 PCI Express Mini Card for wireless WAN . . 76 1110 Bluetooth daughter card (BDC-2.1) . . . . 78 1120 Keyboard bezel 79 1130 LCD assembly 82 i