Checking the internal battery status..22 Related service information .......23 Security ............... 23 Power management .......... 23 Activating/Deactivating the Display ..23 Lenovo TAB 2 A8-50 ........24 Specifications ............. 24 Components location ........26 Front view ............ 26 Rear view ............27 Parts list ..............
This manual is intended only for trained servicers who are familiar with Lenovo products. Use this manual to troubleshoot problems effectively. Before servicing a Lenovo product, make sure to read all the information under “Safety information” on page 1 and “Important service information”...
Safety information Safety information This chapter presents the following safety information that you need to get familiar with before you service a Lenovo computer: • “General safety” on page 2 • “Electrical safety” on page 3 • “Safety inspection guide” on page 5 •...
Lenovo TAB 2 A8-50 Hardware Maintenance Manual General safety Follow these rules below to ensure general safety: • Observe a good housekeeping in the area where the machines are put during and after the maintenance. • When lifting any heavy object: 1.
Safety information Electrical safety Observe the following rules when working on electrical equipments. Important: Use only approved tools and test equipments. Some hand tools have handles covered with a soft material that does not insulate you when working with live electrical currents. Many customers have rubber floor mats near their machines that contain small conductive fibers to decrease electrostatic discharges.
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Lenovo TAB 2 A8-50 Hardware Maintenance Manual • Always look carefully for possible hazards in your work area. Examples of these hazards are moist floors, nongrounded power extension cables, power surges, and missing safety grounds. • Do not touch live electrical circuits with the reflective surface of a plastic dental mirror.
4. Check for cracked or bulging batteries. 5. Remove the cover. 6. Check for any obvious non-Lenovo alterations. Use good judgment as to the safety of any non-Lenovo alterations. 7. Check inside the unit for any obvious unsafe conditions, such as metal filings, contamination, water or other liquids, or signs of fire or smoke damage.
Lenovo TAB 2 A8-50 Hardware Maintenance Manual Handling devices that are sensitive to electrostatic discharge Any computer part containing transistors or integrated circuits (ICs) should be considered sensitive to electrostatic discharge (ESD). ESD damage can occur when there is a difference in charge between objects. Protect against ESD damage by equalizing the charge so that the machine, the part, the work mat, and the person handling the part are all at the same charge.
Safety information Safety notices: multilingual translations The safety notices in this section are provided in English, French, German, Hebrew, Italian, Japanese, and Spanish. Safety notice 1 Before the computer is powered on after FRU replacement, make sure all screws, springs, and other small parts are in place and are not left loose inside the computer.
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Lenovo TAB 2 A8-50 Hardware Maintenance Manual Safety notice 2 DANGER Some standby batteries contain a small amount of nickel and cadmium. Do not disassemble a standby battery, recharge it, throw it into fire or water, or short-circuit it. Dispose of the battery as required by local ordinances or regulations.
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Safety information Safety notice 3 DANGER The battery pack contains small amounts of nickel. Do not disassemble it, throw it into fire or water, or short-circuit it. Dispose of the battery pack as required by local ordinances or regulations. Use only the battery in the appropriate parts listing when replacing the battery pack.
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Lenovo TAB 2 A8-50 Hardware Maintenance Manual Safety notice 4 DANGER The lithium battery can cause a fire, an explosion, or a severe burn. Do not recharge it, remove its polarized connector, disassemble it, heat it above 100°C (212°F), incinerate it, or expose its cell contents to water. Dispose of the battery as required by local ordinances or regulations.
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Safety information Safety notice 5 If the LCD breaks and the fluid from inside the LCD gets into your eyes or on your hands, immediately wash the affected areas with water at least for 15 minutes. Seek medical care if any symptoms caused by the fluid are present after washing.
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Lenovo TAB 2 A8-50 Hardware Maintenance Manual Safety notice 6 DANGER To avoid shock, do not remove the plastic cover that protects the lower part of the inverter card. Afin d’éviter tout risque de choc électrique, ne retirez pas le cache en plastique protégeant la partie inférieure de la carte d’alimentation.
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Safety information Safety notice 8 DANGER Before removing any FRU, turn off the computer, unplug all power cords from electrical outlets, remove the battery pack, and then disconnect any interconnecting cables. Avant de retirer une unité remplaçable en clientèle, mettez le système hors tension, débranchez tous les cordons d’alimentation des socles de prise de courant, retirez la batterie et déconnectez tous les cordons d’interface.
Lenovo TAB 2 A8-50 Hardware Maintenance Manual Laser compliance statement Some models of Lenovo computer are equipped from the factory with an optical storage device such as a CD-ROM drive or a DVD-ROM drive. Such devices are also sold separately as options. If one of these drives is installed, it is certified in the U.S.
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Safety information A CD-ROM drive, a DVD-ROM drive, or any other storage device installed may contain an embedded Class 3A or Class 3B laser diode. Note the following: DANGER Emits visible and invisible laser radiation when open. Do not stare into the beam, do not view directly with optical instruments, and avoid direct exposure to the beam.
To download software fixes, drivers, and BIOS, follow the steps below: 1. Go to http://consumersupport.lenovo.com/. 2. Enter a serial number or select a product or use Lenovo smart downloading. 3. Select the BIOS/Driver/Applications and download. 4. Follow the directions on the screen and install the necessary software.
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: •...
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.
General checkout General checkout 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: Important notes: •...
Lenovo TAB 2 A8-50 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.
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.
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. – Pull down the application icon from the action bar and then touch Settings.
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 SECURITY, SIM CARD LOCK (LTE version only), PASSWORDS, DEVICE ADMINISTRATION and CREDENTIAL STORAGE.
Note: The listed technical data is applicable to all versions of the product, i.e. the WiFi version (Lenovo TAB 2 A8-50F),the LTE data version (Lenovo TAB 2 A8-50L) and the LTE voice version (Lenovo TAB 2 A8-50LC), unless otherwise specified.
Note: The listed technical data is applicable to all versions of the product, i.e. the WiFi version (Lenovo TAB 2 A8-50F),the LTE data version (Lenovo TAB 2 A8-50L) and the LTE voice version (Lenovo TAB 2 A8-50LC), unless otherwise specified.
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 Lenovo computers, this problem is addressed with special nylon-coated screws that have the following characteristics: •...
Lenovo TAB 2 A8-50 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.
1. Open the SD/SIM card cover. Figure 1-1. Opening the SD/SIM card cover 2. Remove the dual micro SIM card tray from its slot (Lenovo TAB 2 A8-50L/LC only). Figure 1-2. Removing the dual micro SIM card tray (Lenovo TAB 2 A8-50L/LC only)
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Lenovo TAB 2 A8-50 3. Remove screws on the rear cover. Figure 1-3. The screws on the rear cover Part No. Screw (quantity) Color Torque Phillips flat head screw, M1.4 × 2.5 (1) Black 4. Hold the tablet in one hand and use a triangle paddle to unlock the rear cover from the tablet along the joint line as shown in the figure below.
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Lenovo TAB 2 A8-50 Hardware Maintenance Manual 5. Slowly remove the rear cover. Figure 1-5. The removed rear cover with side key...
Lenovo TAB 2 A8-50 1020 Battery pack For access, remove the following FRU: • “1010 Rear cover with side key” on page 34 Rechargeable Battery Notice CAUTION: Risk of explosion if the battery is replaced with an incorrect type. When replacing the lithium battery, use only the same or an equivalent type that is recommended by the manufacturer.
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Lenovo TAB 2 A8-50 Hardware Maintenance Manual 2. Remove the metal piece. Figure 2-2. Removing the metal piece 3. Disconnect the battery FPC from its connector on the main board. Figure 2-3. Disconnecting the battery FPC...
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Lenovo TAB 2 A8-50 4. Detach the battery FPC from the main board. Figure 2-4. Detaching the battery FPC 5. Detach the battery pack from the front module of the tablet using a flat blade. Figure 2-5. Detaching the battery pack...
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Lenovo TAB 2 A8-50 Hardware Maintenance Manual 6. Remove the battery pack. Figure 2-6. Removing the battery pack Figure 2-7. The removed battery pack...
Lenovo TAB 2 A8-50 1030 Rear camera For access, remove the following FRU: • “1010 Rear cover with side key” on page 34 Detach the following FPC from the main board: • Battery FPC (see Step 1 on page 37 to Step 3 on page 38 in “1020 Battery pack”)
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Lenovo TAB 2 A8-50 Hardware Maintenance Manual 2. Remove the rear camera from its seat as shown in the figure below. Figure 3-2. Removing the rear camera Figure 3-3. The removed rear camera...
Lenovo TAB 2 A8-50 1040 Front camera For access, remove the following FRU: • “1010 Rear cover with side key” on page 34 Detach the following FPC from the main board: • Battery FPC (see Step 1 on page 37 to Step 3 on page 38 in “1020 Battery pack”)
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Lenovo TAB 2 A8-50 Hardware Maintenance Manual 2. Pull out the TP FPC from its connector on the main board. Figure 4-2. Pulling out the TP FPC 3. Remove screws on the top side speaker. Figure 4-3. The screws on the top side speaker Part No.
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Lenovo TAB 2 A8-50 4. Unlock the connector of the front camera FPC on the main board. Figure 4-4. Unlocking the connector of the front camera FPC 5. Pull out the front camera FPC from its connector on the main board.
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Lenovo TAB 2 A8-50 Hardware Maintenance Manual Figure 4-6. The removed front camera...
Lenovo TAB 2 A8-50 1050 Main board assembly (with top side speaker, side key FPC) For access, remove the following FRUs: • “1010 Rear cover with side key” on page 34 • “1020 Battery pack” on page 37 • “1030 Rear camera” on page 41 •...
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2. Remove the bracket from the tablet. Figure 5-2. Removing the bracket 3. Detach the antenna cable from its connector on the main board (Lenovo TAB 2 A8-50L/LC only). Figure 5-3. Detaching the antenna cable (Lenovo TAB 2 A8-50L/LC only)
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Lenovo TAB 2 A8-50 4. Detach the side key FPC from the front module of the tablet using a pair of tweezers. Figure 5-4. Detaching the side key FPC 5. Remove the mylar on the main FPC at the main board side.
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Lenovo TAB 2 A8-50 Hardware Maintenance Manual 6. Unlock the connector of the main FPC on the main board using a triangle paddle. Figure 5-6. Unlocking the connector of the main FPC 7. Pull out the main FPC from its connector on the main board.
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Lenovo TAB 2 A8-50 8. Remove the conductive fabric on the main board. Figure 5-8. Removing the conductive fabric 9. Remove screws as shown in the figure below. Figure 5-9. The screws on the bracket Part No. Screw (quantity) Color Torque Phillips flat head screw, M1.4 ×...
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Lenovo TAB 2 A8-50 Hardware Maintenance Manual 10. Remove the bracket from the tablet. Figure 5-10. Removing the bracket 11. Remove the screw gasket from the tablet. Figure 5-11. Removing the screw gasket...
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Lenovo TAB 2 A8-50 12. Lift up the main board assembly and remove it as shown in the figure below. Figure 5-12. Removing the main board assembly Figure 5-13. The removed the main board assembly...
Lenovo TAB 2 A8-50 Hardware Maintenance Manual 1060 Main FPC assembly (with vibrator, microphone, bottom side speaker, and the LTE antenna for LTE version only) For access, remove the following FRUs: • “1010 Rear cover with side key” on page 34 •...
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3. Pull out the main FPC from its connector on the main board. Figure 6-3. Pulling out the main FPC (from the main board side) 4. Detach the LTE antenna cable from the main board (Lenovo TAB 2 A8-50L/ LC only).
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Lenovo TAB 2 A8-50 Hardware Maintenance Manual 4.2 Remove the bracket from the tablet. Figure 6-5. Removing the bracket 4.3 Detach the LTE antenna cable from its connector on the main board. Figure 6-6. Detaching the LTE antenna cable...
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Lenovo TAB 2 A8-50 4.4 Detach the LTE antenna cable from the front module of the tablet. Figure 6-7. Detaching the LTE antenna cable 5. Remove the mylar on the connector of the main FPC. Figure 6-8. Removing the mylar on the connector of the main FPC...
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Lenovo TAB 2 A8-50 Hardware Maintenance Manual 6. Unlock the connector of the main FPC on the front module of the tablet using a triangle paddle. Figure 6-9. Unlocking the connector of the main FPC 7. Pull out the main FPC from its connector on the main board.
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Lenovo TAB 2 A8-50 8. Remove the mylar and conductive fabric on the main FPC as shown in the figures below. Figure 6-11. Removing the mylar Figure 6-12. Removing the conductive fabric...
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Lenovo TAB 2 A8-50 Hardware Maintenance Manual 9. Detach the main FPC from the front module of the tablet. Figure 6-13. Detaching the main FPC Figure 6-14. Detaching the main FPC...
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Lenovo TAB 2 A8-50 10. Remove screws bottom side speaker bracket. Figure 6-15. The screws on the bottom side speaker bracket Part No. Screw (quantity) Color Torque Phillips flat head screw, M1.4 × 3.0 for Silver blue TP LCM assembly (4) Phillips flat head screw, M1.4 ×...
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Lenovo TAB 2 A8-50 Hardware Maintenance Manual 12. Detach the microphone from its seat, and the main FPC assembly has now been removed. Figure 6-17. Detaching the microphone Figure 6-18. The removed the main FPC assembly (Lenovo TAB 2 A8-50F)
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Lenovo TAB 2 A8-50 Figure 6-19. The removed the main FPC assembly (Lenovo TAB 2 A8-50L/LC)
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The result obtained in other operating environments may vary. Lenovo may use or distribute any of the information you supply in any way it believes appropriate without incurring any obligation to you.
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Users of this document should verify the applicable data for their specific environment. Trademarks Lenovo and the Lenovo logo are trademarks of Lenovo in the United States or other countries, or both. Other company, product, or service names may be trademarks or service marks...