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Lenovo ThinkPad 11e Hardware Maintenance Manual - Page 33

Checking the battery and operational charging, Checking the coin-cell battery, Checking the battery

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Checking the battery and operational charging Checking the battery This system supports only batteries specially designed for this specific system and manufactured by Lenovo or an authorized builder. The system does not support unauthorized batteries or batteries designed for other systems. If an unauthorized battery or a battery designed for another systems is installed, the system will not charge. Attention: Lenovo has no responsibility for the performance or safety of unauthorized batteries, and provides no warranties for failures or damage arising out of their use. To check the percentage of battery power remaining or the battery charging status, click the battery status icon in the Windows® notification area. To check for detailed battery status information, do the following: • For the Microsoft® Windows 7 operating system: Double-click the battery gauge icon in the right side of the task bar to open the Power Manager program and then click the Battery tab. • For Windows 8.1: Open the Lenovo Support program and click Battery Health, or open the Lenovo Settings program and click Power. Checking the operational charging To check whether the battery charges properly during operation, do the following: 1. Discharge the battery until the remained battery power is less than 50%. 2. Perform operational charging. Click the battery status icon in the Windows notification area to display detailed battery information. If it indicates that the battery is not charging, replace the battery. 3. Check the battery status again. If the same error still exists, replace the system board. Checking the coin-cell battery To check the coin-cell battery, do the following: 1. Disable the built-in battery. See "Disabling the built-in battery" on page 54. 2. Remove the coin-cell battery. See "1090 System board assembly, dc-in connector, and thermal fan" on page 66. 3. Measure the voltage of the coin-cell battery. See the following illustration. Wire Red Black Voltage (V dc) +2.5 to +3.2 Ground • If the voltage is correct, replace the system board. • If the voltage is not correct, replace the coin-cell battery. • If the coin-cell battery discharges quickly after replacement, replace the system board. Chapter 3. General checkout 27

Section	Page
About this manual	5
Chapter 1. Safety information	7
General safety	7
Electrical safety	7
Safety inspection guide	8
Handling devices that are sensitive to electrostatic discharge	9
Grounding requirements	10
Safety notices (multilingual translations)	10
Chapter 2. Important service information	25
Strategy for replacing FRUs	25
Strategy for replacing a solid-state drive	25
Important notice for replacing a system board	26
How to use error message	26
Strategy for replacing FRUs for CTO, special-bid, and standard models	26
Product definition	26
FRU identification	26
Chapter 3. General checkout	29
What to do first	29
Checkout guide	30
Lenovo Solution Center	30
Quick test programs	30
UEFI diagnostic program	31
Bootable diagnostic programs	31
Power system checkout	32
Checking the ac power adapter	32
Checking the battery and operational charging	33
Checking the coin-cell battery	33
Chapter 4. Related service information	35
Restoring the factory contents by using the product Recovery Disc Set	35
Using the Windows recovery programs on the Windows 8.1 operating system	36
Passwords	38
Power-on password	38
Hard disk password	38
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 (for the Windows 7 operating system only)	40
Sleep mode	40
Hibernation mode	41
Symptom-to-FRU index	41
Numeric error codes	42
Error messages	43
Beep symptoms	43
No-beep symptoms	43
LCD-related symptoms	43
Intermittent problems	44
Undetermined problems	44
Chapter 5. Locations	45
Locating computer controls, connectors, and indicators	45
Front view	45
Left-side view	47
Bottom view	48
Locating FRUs and CRUs	48
Major FRUs	49
LCD FRUs	51
Miscellaneous parts and other FRUs	54
Looking up FRU information	54
Chapter 6. FRU replacement notices	55
Common service tools	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	58
Chapter 7. Removing or replacing a FRU	59
General guidelines	59
Before servicing the computer	60
Disabling the built-in battery	60
Removing a major FRU	60
1010 Bottom cover	60
1020 Battery	61
1030 Hard disk drive or solid-state drive	63
1040 Wireless LAN card	64
1050 Memory module	65
1060 Coin-cell battery	66
1070 Keyboard	66
1080 Keyboard bezel assembly, speaker assembly, media-card-reader board	68
1090 System board assembly, dc-in connector, and thermal fan	72
1100 LCD unit	75
Removing an LCD FRU for models without touch panel	77
2010 LCD bezel assembly	77
2020 LCD panel	78
2030 Camera/microphone board	80
2040 Antenna kit, LCD cable, LED cable, and hinges	80
Removing an LCD FRU for models with touch panel	83
3010 LCD panel assembly	83
3020 Camera/microphone board and proximity sensor board	85
3030 Antenna kit, LCD cable, LED cable, and hinges	86
Appendix A. Notices	91
Electronic emissions notices	92