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Lenovo YOGA Tab 3 YT3-850F Hardware Maintenance Manual
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Lenovo YOGA Tab 3 YT3-850F Hardware Maintenance Manual

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  • Page 1 YOGA Tab 3 8” Hardware Maintenance Manual Lenovo YT3-850F Lenovo YT3-850L Lenovo YT3-850M...
  • Page 2 First Edition (Aug 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 YT3-850 ..........24 Specifications ............. 24 Components location ........26 Front view ............ 26 Rear view ............27 Parts list ..............

  • Page 4: About This Manual

    This manual contains service and reference information for the following Lenovo product of the specified versions: • Lenovo YT3-850 (WiFi version, LTE data version and LTE voice version) Use this manual to troubleshoot problems. The manual is divided into the following sections: •...

  • 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 YT3-850 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. Make sure that you can stand safely without slipping.

  • 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 YT3-850 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 YT3-850 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 YT3-850 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 YT3-850 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 YT3-850 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 YT3-850 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 YT3-850 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 Yt3-850

    • “FRU replacement notices” on page 32 • “Removing and replacing an FRU” on page 33 Specifications The following table lists the specifications of the Lenovo TY3-850 tablet. Note: The listed technical data is applicable to all versions of the product, i.e. the WiFi version (Lenovo TY3-850F), the LTE data version (Lenovo TY3-850L) and the LTE voice version (Lenovo TY3-850M), unless otherwise specified.
  • Page 29 Lenovo YT3-850 Ports • Micro-USB (USB 2.0) • Combo Audio Jack, 3.5mm (with Audio and Microphone) • Micro SIM card slot (LTE versions only) • Micro-SD card slot (support external Micro-SD card up to 64GB) Communication • WiFi: 802.11 b/g/n, 2.4GHz •...

  • Page 30: Components Location

    Lenovo YT3-850 Hardware Maintenance Manual Components location Front view Left speaker Right speaker...

  • Page 31: Rear View

    Lenovo YT3-850 Rear view Audio Jack Microphone SIM card slot (for LTE versions only) Micro-SD card slot Volume key Micro-USB connection Power key Rotated camera Hinge frame latch...

  • Page 32: Parts List

    • “Screws list” on page 31 Note: The listed technical data is applicable to all versions of the product, i.e. the WiFi version (Lenovo TY3-850F), the LTE data version (Lenovo TY3-850L) and the LTE voice version (Lenovo TY3-850M), unless otherwise specified. FRUs list...
  • Page 33 Lenovo YT3-850...
  • Page 34 Lenovo YT3-850 Hardware Maintenance Manual Table 1. FRUs list–Overall No. FRU FRU No. CRU ID Lenovo YT3-850 rear cover Lenovo YT3-850 F: 5S58C02834 Lenovo YT3-850 L/M: 5S58C03455 Lenovo YT3-850 front module (TP 5D68C02838 LCM assembly) Lenovo YT3-850 battery pack 5SR8C02843...

  • Page 35: Screws List

    Lenovo YT3-850 Screws list Table 2. Parts list–Screw CRU ID × 1.8, wide head Phillips cross head screw, M1.4 5M88C02828 × 2.0 Phillips cross head screw, M1.4 5M88C02829 Phillips cross head screw, M1.4 × 4.0 5M88C02830 × 3.0 Phillips cross head screw, M1.4 5M89A6N1KD ×...

  • 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 YT3-850 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

    Lenovo YT3-850 Hardware Maintenance Manual 1010 Rear cover 1. Open the hinge frame. Figure 1-1. Opening the hinge frame 2. Remove the card slot cover. Figure 1-2. Removing the card slot cover...
  • Page 39 Lenovo YT3-850 3. Remove screws on the rear cover as shown in the figure below. Figure 1-3. The screws on the rear cover Part No. Screw (quantity) Color Torque M1.4 × 2.0 (3) Silver 4. Hold the tablet in one hand and use a triangle paddle to unlock the rear cover from the top middle of the tablet along the joint line as shown in the figure below.
  • Page 40 Lenovo YT3-850 Hardware Maintenance Manual 5. Slowly remove the rear cover. CAUTION: Handle with care! The rear cover or its locks can be damaged! Do not try to lift the rear cover off the tablet when it is tightly locked or conglutinated at some places.

  • Page 41: 1020 Left Speaker Assembly Unit (With Power Key Fpc)

    Lenovo YT3-850 1020 Left speaker assembly unit (with power key FPC) For access, remove the following FRU: • “1010 Rear cover” on page 34 1. Remove screws on the metal piece for fixing the battery FPC as shown in the figure below.
  • Page 42 Lenovo YT3-850 Hardware Maintenance Manual 2. Remove the metal piece using a pair of tweezers. Figure 2-2. Removing the metal piece 3. Disconnect the power supply to the tablet by detaching the battery FPC from its connector on the main board.
  • Page 43 Lenovo YT3-850 4. Remove screws on the holder of the rotated camera as shown in the figure below. Figure 2-4. The screws on the holder of the rotated camera Part No. Screw (quantity) Color Torque M1.4 × 3.0 (2) Black 5.
  • Page 44 Lenovo YT3-850 Hardware Maintenance Manual 6. Detach the FPC connector of the rotated camera from the main board. Figure 2-6. Detaching the FPC connector of the rotated camera 7. Unlock the connector of the power key FPC on the main board using a triangle paddle.
  • Page 45 Lenovo YT3-850 8. Pull out the power key FPC from its connector using a pair of tweezers. Figure 2-8. Pulling out the power key FPC 9. Gently push the rotated camera assembly, and at the same time push the left speaker unit in the direction as shown in the figure below.
  • Page 46 Lenovo YT3-850 Hardware Maintenance Manual Figure 2-10. The removed left speaker assembly unit (with power key FPC)

  • Page 47: 1030 Rotated Camera

    Lenovo YT3-850 1030 Rotated camera For access, remove the following FRU: • “1010 Rear cover” on page 34 1. Remove screws on the metal piece for fixing the battery FPC as shown in the figure below. Figure 3-1. The screws on the metal piece for fixing the battery FPC Part No.
  • Page 48 Lenovo YT3-850 Hardware Maintenance Manual 2. Remove the metal piece using a pair of tweezers. Figure 3-2. Removing the metal piece 3. Disconnect the power supply to the tablet by detaching the battery FPC from its connector on the main board.
  • Page 49 Lenovo YT3-850 4. Remove screws on the holder of the rotated camera as shown in the figure below. Figure 3-4. The screws on the holder of the rotated camera Part No. Screw (quantity) Color Torque M1.4 × 3.0 (2) Black 5.
  • Page 50 Lenovo YT3-850 Hardware Maintenance Manual 6. Detach the FPC connector of the rotated camera from the main board. Figure 3-6. Detaching the FPC connector of the rotated camera 7. Unlock the connector of the power key FPC on the main board using a triangle paddle.
  • Page 51 Lenovo YT3-850 8. Pull out the power key FPC from its connector using a pair of tweezers. Figure 3-8. Pulling out the power key FPC 9. Gently push the rotated camera assembly, and at the same time push the left speaker unit in the direction as shown in the figure below.
  • Page 52 Lenovo YT3-850 Hardware Maintenance Manual Figure 3-10. The removed rotated camera...

  • Page 53: 1040 Hinge Frame Latch

    Lenovo YT3-850 1040 Hinge frame latch For access, remove the following FRUs in order: • “1010 Rear cover” 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 Left speaker assembly unit (with power key FPC)”)
  • Page 54 Lenovo YT3-850 Hardware Maintenance Manual 2. Remove the hinge frame latch. Figure 4-2. Removing the hinge frame latch Figure 4-3. The removed hinge frame latch...

  • Page 55: 1050 Right Speaker Assembly Unit (With Microphone And Audio Jack)

    Lenovo YT3-850 1050 Right speaker assembly unit (with microphone and audio jack) For access, remove the following FRUs in order: • “1010 Rear cover” 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 Left speaker assembly unit (with power key FPC)”)
  • Page 56 Lenovo YT3-850 Hardware Maintenance Manual 2. Detach the right speaker unit from the front module of the tablet. Figure 5-2. Detaching the right speaker unit 3. Detach the microphone using a pair of tweezers as shown in the figure below.
  • Page 57 Lenovo YT3-850 4. Unlock the connector of the right speaker FPC on the main board using a triangle paddle. Figure 5-4. Unlocking the connector of the right speaker FPC 5. Pull out the right speaker FPC from its connector using a pair of tweezers.
  • Page 58 Lenovo YT3-850 Hardware Maintenance Manual Figure 5-6. The removed right speaker assembly unit (with microphone and audio jack)

  • Page 59: 1060 Battery Pack

    Lenovo YT3-850 1060 Battery pack For access, remove the following FRUs in order: • “1010 Rear cover” on page 34 • “1020 Left speaker assembly unit (with power key FPC)” on page 37 • “1030 Rotated camera” on page 43 Detach the following unit: •...
  • Page 60 Lenovo YT3-850 Hardware Maintenance Manual 2. Remove the metal piece. Figure 6-2. Removing the metal piece 3. Slowly pull out the hinge pivot using a pair of tweezers. Figure 6-3. Pulling out the hinge pivot...
  • Page 61 Lenovo YT3-850 4. Detach the battery pack at the left end, turn the battery pack clockwise around its right end so as to steer the battery FPC out through the supporting frame at the right end, and then remove the battery pack from the main body of the tablet.
  • Page 62 Lenovo YT3-850 Hardware Maintenance Manual Figure 6-6. The removed battery pack To further remove the battery cell, continue with the following steps: 5. Peel off the foil on the battery cover at the FPC end of the hinge frame. Figure 6-7. Peeling off the foil on the battery cover...
  • Page 63 Lenovo YT3-850 6. Remove screw on the battery cover as shown in the figure below. Figure 6-8. The screw on the battery cover Part No. Screw (quantity) Color Torque ST1.4 × 3.0 (1) Black 7. Remove the battery cover as shown in the figure below.
  • Page 64 Lenovo YT3-850 Hardware Maintenance Manual 8. Remove the battery pack from the hinge frame. Figure 6-10. Removing the battery cell Figure 6-11. The removed battery cell...

  • Page 65: 1070 Lcd Fpc

    Lenovo YT3-850 1070 LCD FPC For access, remove the following FRUs in order: • “1010 Rear cover” 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 Left speaker assembly unit (with power key FPC)”...
  • Page 66 Lenovo YT3-850 Hardware Maintenance Manual 2. Pull out the LCD FPC from its connector on the main board using a pair of tweezers. Figure 7-2. Pulling out the LCD FPC (from the main board side) 3. Unlock the connector of the LCD FPC on the front module of the tablet using a triangle paddle.
  • Page 67 Lenovo YT3-850 4. Remove the LCD FPC from its connector on the front module. Figure 7-4. Removing the LCD FPC (from the front module side) Figure 7-5. The removed LCD FPC...

  • Page 68: 1080 Vibrator Motor

    Lenovo YT3-850 Hardware Maintenance Manual 1080 Vibrator motor For access, remove the following FRU: • “1010 Rear cover” 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 Left speaker assembly unit (with power key FPC)”...
  • Page 69 Lenovo YT3-850 Figure 8-3. The removed vibrator motor...

  • Page 70: 1090 Main Board

    Lenovo YT3-850 Hardware Maintenance Manual 1090 Main board Important notices for handling PCB: When handling PCB, bear the following in mind: • Be careful not to drop the PCB onto a bench top that has a hard surface, such as surface made of metal, wood, or composite materials.
  • Page 71 Lenovo YT3-850 2. Pull out the TP FPC from its unlocked connector using a pair of tweezers. Figure 9-2. Pulling out the TP FPC 3. Detach the connector of the USB and volume key FPC from the main board using a pair of tweezers.
  • Page 72 Lenovo YT3-850 Hardware Maintenance Manual 4. Disconnect antenna cable from its connector on the main board at the position shown in the figure below. Figure 9-4. Positions for disconnecting the antennas 5. Remove screws on the main board as shown in the figure below.
  • Page 73 Lenovo YT3-850 6. Remove the main board. Figure 9-6. Removing the main board Figure 9-7. The removed main board...

  • Page 74: 1100 Usb And Volume Key Fpc

    Lenovo YT3-850 Hardware Maintenance Manual 1100 USB and Volume key FPC For access, remove the following FRUs in order: • “1010 Rear cover” on page 34 • “1020 Left speaker assembly unit (with power key FPC)” on page 37 • “1030 Rotated camera” on page 43 Detach the following FPCs, wire connections and FRUs: •...
  • Page 75 Lenovo YT3-850 2. Remove screws on the main board as shown in the figure below. Figure 10-2. The screws on the main board Part No. Screw (quantity) Color Torque M1.4 × 1.8, wide head (6) Silver 3. Remove the main board attached with vibrator motor.
  • Page 76 Lenovo YT3-850 Hardware Maintenance Manual 4. Detach the USB and volume key FPC from its seat as shown in the figure below. Figure 10-4. Detaching the USB and volume key FPC from its seat 5. Detach the USB and volume key FPC from the side of the tablet front module.
  • Page 77 Lenovo YT3-850 Figure 10-6. The removed USB and volume key FPC...

  • Page 78: 1110 Volume Key

    Lenovo YT3-850 Hardware Maintenance Manual 1110 Volume key For access, remove the following FRU: • “1010 Rear cover” on page 34 1. Detach the volume key at the positions shown in the figure below. Figure 11-1. Detaching the volume key 2.
  • Page 79 Lenovo YT3-850 Figure 11-3. The removed volume key...

  • Page 80: 1120 Power Button

    Lenovo YT3-850 Hardware Maintenance Manual 1120 Power button For access, remove the following FRU: • “1010 Rear cover” on page 34 1. Remove the power button from the rear cover. Figure 12-1. Removing the power button Figure 12-2. The removed power button...

  • Page 81: 1130 Main Antenna

    Lenovo YT3-850 1130 Main antenna For access, remove the following FRU: • “1010 Rear cover” on page 34 • “1020 Left speaker assembly unit (with power key FPC)” on page 37 • “1030 Rotated camera” on page 43 Detach the following FPCs, wire connections and FRUs: •...
  • Page 82 Lenovo YT3-850 Hardware Maintenance Manual 2. Disconnect the main antenna cable from its connector on the main board at the position shown in the figure below. Figure 13-2. Positions for disconnecting the antennas 3. Remove screws on the main board as shown in the figure below.
  • Page 83 Lenovo YT3-850 4. Detach the main board. Figure 13-4. Detaching the main board 5. Remove the main antenna. Figure 13-5. Removing the antenna...
  • Page 84 Lenovo YT3-850 Hardware Maintenance Manual Figure 13-6. The removed antenna...

  • Page 85: 1140 Diversity Antenna (Lte Versions Only)

    Lenovo YT3-850 1140 Diversity antenna (LTE versions only) For access, remove the following FRU: • “1010 Rear cover” on page 34 • “1020 Left speaker assembly unit (with power key FPC)” on page 37 • “1030 Rotated camera” on page 43 Detach the following FPCs, wire connections and FRUs: •...
  • Page 86 Lenovo YT3-850 Hardware Maintenance Manual 2. Remove screws on the diversity antenna as shown in the figure below. Figure 15-1. The screw on the antenna Part No. Screw (quantity) Color Torque M1.4 × 2.0 (2) Silver 3. Remove screws on the main board as shown in the figure below.
  • Page 87 Lenovo YT3-850 4. Detach the main board. Figure 15-3. Detaching the main board 5. Remove the diversity antenna. Figure 15-4. Removing the antenna...
  • Page 88 Lenovo YT3-850 Hardware Maintenance Manual Figure 15-5. The removed antenna...

  • Page 89: Notices

    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 90: Trademarks

    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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