Lenovo TAB 2 A8-50F Hardware Maintenance Manual
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Lenovo TAB 2 A8-50F Hardware Maintenance Manual

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Lenovo TAB 2 A8-50
Hardware Maintenance Manual
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  • Page 1 Lenovo TAB 2 A8-50 Hardware Maintenance Manual Lenovo TAB 2 A8-50F Lenovo TAB 2 A8-50L Lenovo TAB 2 A8-50LC...
  • Page 2 First Edition (May 2015) © Copyright Lenovo 2015. All rights reserved. LENOVO products, data, computer software, and services have been developed exclusively at private expense and are sold to governmental entities as commercial items as defined by 48 C.F.R. 2.101 with limited and restricted rights to use, reproduction and disclosure.

  • Page 3: Table Of Contents

    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 ..............

  • Page 4: About This Manual

    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”...

  • Page 5: Safety 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 •...

  • Page 6: General Safety

    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.

  • Page 7: Electrical Safety

    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.
  • Page 8 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.

  • Page 9: Safety Inspection Guide

    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.

  • Page 10: Handling Devices That Are Sensitive To Electrostatic Discharge

    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.

  • Page 11: Safety Notices: Multilingual Translations

    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.
  • Page 12 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.
  • Page 13 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.
  • Page 14 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.
  • Page 15 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.
  • Page 16 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.
  • Page 17 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.

  • Page 18: Laser Compliance Statement

    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.
  • Page 19 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.

  • Page 20: Important Service Information

    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.

  • Page 21: Important Notice For Replacing A System Board

    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: •...

  • Page 22: Important Information About Replacing Rohs Compliant Frus

    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.

  • Page 23: General Checkout

    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: •...

  • Page 24: What To Do First

    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.

  • Page 25: Power System Checkout

    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.

  • Page 26: Checking The Internal Battery Status

    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.

  • Page 27: Related Service Information

    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.

  • Page 28: Lenovo Tab 2 A8-50

    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.
  • Page 29 Lenovo TAB 2 A8-50 Ports • Micro-USB (USB 2.0), 5-pin • Audio Jack, 3.5mm (support Audio and Microphone) • Dual micro SIM card slot (Lenovo TAB 2 A8-50L/ • Micro-SD card slot (support external Micro-SD card up to 64GB) Communication • WiFi: 802.11b/g/n •...

  • Page 30: Components Location

    Lenovo TAB 2 A8-50 Hardware Maintenance Manual Components location Front view Front camera Top side speaker Bottom side speaker...

  • Page 31: Rear View

    Lenovo TAB 2 A8-50 Rear view Power key Volume key Rear camera Micro-USB connection Audio Jack Dual micro SIM card slot (Lenovo TAB 2 A8-50L/LC) Micro-SD card slot Microphone...

  • Page 32: Parts List

    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.
  • Page 33 Lenovo TAB 2 A8-50...
  • Page 34 Lenovo TAB 2 A8-50 Hardware Maintenance Manual Table 1. FRUs list–Overall No. FRU FRU No. CRU ID Lenovo TAB 2 A8-50 front module 5D68C02067 (blue) (TP LCM assembly) 5D68C02330 (white) Lenovo TAB 2 A8-50 rear cover Lenovo TAB 2 A8-50F:...

  • Page 35: Screws List

    Lenovo TAB 2 A8-50 Screws list Table 2. Parts list–Screw CRU ID × 2.5 Phillips cross head screw, M1.4 5M89A33423 (for blue TP LCM assembly × 3.5 Phillips cross head screw, M1.4 5M89A4665T (for blue TP LCM assembly × 2.5 Phillips cross head screw, M1.4...

  • Page 36: 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 Lenovo computers, this problem is addressed with special nylon-coated screws that have the following characteristics: •...

  • Page 37: Removing And Replacing An Fru

    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.

  • Page 38: 1010 Rear Cover With Side Key

    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)
  • Page 39 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.
  • Page 40 Lenovo TAB 2 A8-50 Hardware Maintenance Manual 5. Slowly remove the rear cover. Figure 1-5. The removed rear cover with side key...

  • Page 41: 1020 Battery Pack

    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.
  • Page 42 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...
  • Page 43 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...
  • Page 44 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...

  • Page 45: 1030 Rear Camera

    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”)
  • Page 46 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...

  • Page 47: 1040 Front 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”)
  • Page 48 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.
  • Page 49 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.
  • Page 50 Lenovo TAB 2 A8-50 Hardware Maintenance Manual Figure 4-6. The removed front camera...

  • Page 51: 1050 Main Board Assembly (With Top Side Speaker, Side Key Fpc)

    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 •...
  • Page 52 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)
  • Page 53 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.
  • Page 54 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.
  • Page 55 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 ×...
  • Page 56 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...
  • Page 57 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...

  • Page 58: 1060 Main Fpc Assembly (With Vibrator, Microphone, Bottom Side Speaker, And The Lte Antenna For Lte Version Only)

    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 •...
  • Page 59 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).
  • Page 60 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...
  • Page 61 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...
  • Page 62 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.
  • Page 63 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...
  • Page 64 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...
  • Page 65 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 ×...
  • Page 66 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)
  • Page 67 Lenovo TAB 2 A8-50 Figure 6-19. The removed the main FPC assembly (Lenovo TAB 2 A8-50L/LC)
  • Page 68 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.
  • Page 69 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...

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