Lenovo A3000h Service Manual

Use t
he 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 device consists of more...

Important information about replacing RoHS compliant FRUs 
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...

General checkout 
This chapter presents the following information: 
•• “ What to do first”  on page 20 
••  “ Power system checkout”  on page 21 
 
Befor

e you go to the checkout, make sure to read the following important notes: 
 
Important notes: 
•   Only certified trained personnel can service the computer. 
•  Before replacing any FRU, read the entire page on removing and 
replac

ing FRUs.  
•  When you replace FRUs, use new nylon-coated screws. 
•  Be extremely careful during such write...

What to do first 
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 warranty: During the...

Power system checkout 
If you suspect a power problem, see the appropriate one of the following power 
supply checkouts: 
•• “ Checking the AC adapter ” on page 21 
••  “ Checking the battery pack ” on page 22 
Checking the AC adapter 
You are here because the computer fails only when the AC adapter is used. 
•  If the power-on indicator does not turn on, check the power cord of the AC adapter 
for correct continuity and installation. 
To check the AC adapter, follow the steps below: 
1.  Unplug the AC...

Checking the battery pack 
Battery charging does not start until the Power Meter shows that less than 95% 
of the total power remains; under this condition the battery pack can charge to 
100% of its capacity. This protects the battery pack from being overcharged or 
from having a shortened life. 
 
Tap the battery icon in the icon tray, and the percentage of battery power 
remaining is displayed. To get detailed information about the battery, tap Battery 
under Settings In the applications list, to...

Related service information 
This chapter presents the following information: 
•• “ Locking the screen ” on page 23 
••  “ Power management ” on page 23 
 
Locking the screen 
To set the lock screen function, do the following: 
 
1.  Power on your computer. 
2. Tap  Security under Settings In the applications list, to enter the  screen lock 
settings

 interface. 
3. Tap
  Screen lock  to set the screen unlock mode: 
 
Note: 
You are ab

le to lock the screen to protect your computer data in one of the...

Lenovo IdeaTab A3000 
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 
•••  “ Locations ” 
on

 page 36 
•••  “ Parts list ” on page 38 
Specifications 
The following table lists the specifications of the Lenovo IdeaTab A3000: 
Table 1. Specifications 
Feature Description 
Processor/Chipset  • MTK...

FRU replacement notices 
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 IdeaPad 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...

Removing and replacing an FRU 
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  of such FRUs are...