Lenovo B8080h Service Manual

   
    
 
       
 
Important service information 
Important notice for replacing a system board 
Some components mounted on a system  board are very sensitive. Improper 
handling can cause damage to those  components, and may cause a system 
malfunction. 
Attention:  When handling a system board: 
•  Do not drop the system board or  apply any excessive force to it. 
•  Avoid rough handling of any kind. 
•  Avoid bending the system board and hard pushing to prevent cracking at 
each BGA (Ball Grid...

  
   
       
      
 
     
   
   
     
 
   
 
   
   
 
Lenovo B8080 Hardware Maintenance Manual 
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 elec tronics 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...

  
     
         
     
 
        
    
 
      
 
   
 
 
   
General checkout 
General checkout 
This chapter presents the following information: 
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, 
saving, or formatting. Drives in the computer that you are servicing...

    
 
     
 
   
 
   
 
 
 
   
 
 
Lenovo B8080 Hardware Maintenance Manual 
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,...

 
       
   
 
 
       
     
   
   
   
General checkout 
Power system checkout 
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 su pplies power when you turn on the 
computer. 
If you suspect a power problem,...

  
 
   
 
       
     
   
 
   
Lenovo B8080 Hardware Maintenance Manual 
Checking the internal battery status 
To check the battery status of the  tablet, do either of the following: 
•  Approximate information about the battery status 
Get the approximate status of the battery at any time by checking the battery 
status icon on the system bar in the  upper-right corner of the screen. The 
shorter the green bar is, the less the battery power remains. 
•  Accurate information about the battery status...

     
   
 
 
 
Related service information 
Related service information 
This chapter presents the following information: 
• “Security” on page 23 
•  “Power management” on page 23 
Security 
Security settings include: SCREEN SE CURITY, SIM CARD LOCK (3G version 
only), PASSWORDS, DEVICE ADMINISTRATION and CREDENTIAL 
STORAGE. 
Power management 
Note:  Power management modes are not su pported for APM operating system. 
To reduce power consumption, the co mputer has three power management 
modes: screen...

 
   
 
 
 
   
Lenovo B8080 Hardware Maintenance Manual 
Lenovo B8080 
This chapter presents the following pr oduct-specific service references and 
product-specific parts information: 
•  “Specifications” on page 24 
•  “FRU replacement notices” on page 26 
•  “Removing and replacing an FRU” on page 27 
•  “Locations” on page 73 
•  “Parts list” on page 75 
Specifications 
The following table lists the specific ations of the Lenovo B8080 tablet. 
Note: 
The listed technical data is applicable to both...

  
 
 
Lenovo B8080 
Ports  •  Micro-USB (USB 2.0) 
•  Earphone, 3.5mm 
•  SIM card slot (for 3G version only) 
•  Micro-SD card slot 
Communication  •  WiFi, 802.11b/g/n 
•  WCDMA - 900/2100 (for 3G version only) 
•  GSM/EDGE - 900/1800/1900 (for 3G version only) 
•Bluetooth 4.0 
•GPS 
•  A-GPS (for 3G version only) 
Others  •  Speaker (Left and right) 
•  Microphone 
•Gravity sensor 
•E-compass 
•  Ambient light sensor 
•Vibration 
•Hall sensor 
•  LED indicator (on power key) 
•  Dolby audio system...

        
 
 
    
 
   
   
     
   
Lenovo B8080 Hardware Maintenance Manual 
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 proble m. In Lenovo computers, this problem 
is addressed with special nylon-coat ed screws that have the following 
characteristics: 
•  They maintain tight connections. 
•  They do not easily come loose, even with shock or...