Lenovo A2107ah Service Manual

Important service information
17
Use the following strategy to prevent unnecessary expense for replacing and 
servicing FRUs:
 If you are instructed to replace an FRU, but the replacement does not solve 
the problem, reinstall the original FRU before you continue.
 Some computers have both a processor board and a system board. If you are 
instructed to replace either of them, and replacing one of them does not solve 
the problem, reinstall that board, and then replace the other one.
 If an adapter or a...

Lenovo IdeaTab A2107A Hardware Maintenance Manual
18
RoHS, The Restriction of Hazardous Substances in Electrical and 
Electronic Equipment Directive (2002/95/EC) is a European Union legal 
requirement affecting the global electronics industry. RoHS requirements 
must be implemented on Lenovo products placed on the market after June 
2006. Products on the market before June 2006 are not required to have 
RoHS compliant parts. If the original FRU parts are non-compliant, 
replacement parts can also be...

General checkout
19
This chapter presents the following information:
 “What to do first” on page 20
 “Power system checkout” on page 21
Before you go to the checkout, make sure to read the following important notes:
General checkout
Important notes:
•Only certified trained personnel can service the computer.
Before replacing any FRU, read the entire page on removing and 
replacing FRUs.
When you replace FRUs, use new nylon-coated screws.
Be extremely careful during such write operations as copying,...

Lenovo IdeaTab A2107A Hardware Maintenance Manual
20
When you do return an FRU, you must include the following information in the 
parts exchange form or parts return form that you attach to it:
1. Name and phone number of servicer
2. Date of service
3. Date on which the machine failed
4. Date of purchase
5. Procedure index and page number in which the failing FRU was detected
6. Failing FRU name and part number
7. Machine type, model number, and serial number
8. Customer’s name and address
Note for...

General checkout
21
To verify a symptom, follow the steps below:
1. Turn off the computer.
2. Remove the battery pack.
3. Connect the AC adapter.
4. Make sure that power is supplied when you turn on the computer.
5. Turn off the computer.
6. Disconnect the AC adapter and install the charged battery pack.
7. Make sure that the battery pack supplies power when you turn on the 
computer.
If you suspect a power problem, see the appropriate one of the following power 
supply checkouts:
 “Checking the IdeaTab...

Lenovo IdeaTab A2107A Hardware Maintenance Manual
22
1. Open the Android Settings screen.
To open the Android Settings screen, do either of the following:
– From the main Home screen, touch the Android Settings icon on 
Lenovo Launch Zone. The Android Settings screen is displayed.
– Touch the application icon from the action bar and then touch Settings. 
The Android Settings screen is displayed.
2. Touch About Tablet on the Android Settings screen.
3. Touch Status to view the accurate percentage of the...

Related service information
23
This chapter presents the following information:
 “Security” on page 23
 “Power management” on page 23
Security settings include: SCREEN SECURITY, SIM CARD LOCK (3G version 
only), PASSWORDS, DEVICE ADMINISTRATION and CREDENTIAL 
STORAGE.
Note: Power management modes are not supported for APM operating system.
To reduce power consumption, the computer has three power management 
modes: screen blank, sleep (standby), and hibernation.
Activating/Deactivating the Display
With...

Lenovo IdeaTab A2107A Hardware Maintenance Manual
24
This chapter presents the following product-specific service references and 
product-specific parts information:
 “Specifications” on page 24
 “FRU replacement notices” on page 25
 “Removing and replacing an FRU” on page 26

 “Parts list” on page 41
The following table lists the specifications of the Lenovo IdeaTab A2107A:
Table 1. Specifications
FeatureDescription
Form Factor
Size  192mm × 121.8mm × 11.5mm
Weight  Appr. 400g
System
Platform  MTK 6575...

Lenovo IdeaTab A2107A
25
This section presents notices related to removing and replacing parts. Read this 
section carefully before replacing any FRU.
Screw notices
Loose screws can cause a reliability problem. In the Lenovo computer, this 
problem is addressed with special nylon-coated screws that have the following 
characteristics:
 They maintain tight connections.
 They do not easily come loose, even with shock or vibration.
 They are harder to tighten.
 Each one should be used only once.
Do the...

Lenovo IdeaTab A2107A Hardware Maintenance Manual
26
This section presents exploded figures with the instructions to indicate how to 
remove and replace the FRU. Make sure to observe the following general rules:
1. Do not attempt to service any computer unless you have been trained and 
certified. An untrained person runs the risk of damaging parts.
2. Before replacing any FRU, review “FRU replacement notices” on page 25.
3. Begin by removing any FRUs that have to be removed before the failing FRU. 
Any...