Lenovo TAB4 8 Lenovo TB-8504F/Lenovo TB-8504X Hardware Maintenance Manual
Note: Before using this information and the product it supports, be sure to read the general information under “Notices” on page 39. First Edition (May 2017) © Copyright Lenovo 2017. 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.
Contents About this manual........................................iv Safety information.........................................1 General safety ...................................................... 2 Electrical safety .................................................... 3 Safety inspection guide ...................................... 5 Handling devices that are sensitive to electrostatic discharge......................................... 6 Grounding requirements ...................................
About this manual This manual contains service and reference information for the following Lenovo product: Lenovo TB-8504F/Lenovo TB-8504X Use this manual to troubleshoot problems. The manual is divided into the following sections: • The common sections provide general information, guidelines, and safety information required for servicing computers. • The product-specific section includes service, reference, and product-specific parts 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 • “Handling devices that are sensitive to electrostatic discharge” on page 6 • “Grounding requirements” on page 6 • “Safety notices: multilingual translations” on page 7 • “Laser compliance statement” on page 14 1
Lenovo TB-8504F/Lenovo TB-8504X 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. 2. Distribute the weight of the object equally between your feet. 3. Use a slow lifting force. Never move suddenly or twist when you attempt to lift it. 4.
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. Do not use such kind of mat to protect yourself from electrical shock.
Lenovo TB-8504F/Lenovo TB-8504X 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. The surface is conductive; such touching can cause personal injury and machine damage.
Safety information Safety inspection guide The purpose of this inspection guide is to assist you in identifying potential unsafe conditions. As each machine was designed and built, required safety items were installed to protect users and service personnel from injury. This guide addresses only those items. You should use good judgment to identify potential safety hazards according to the attachment of non-Lenovo features or options not covered by this inspection guide.
Lenovo TB-8504F/Lenovo TB-8504X 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. Notes: 1.
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. Verify this by shaking the computer and listening for rattling sounds. Metallic parts or metal flakes can cause electrical shorts.
Lenovo TB-8504F/Lenovo TB-8504X 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. Use only the battery in the appropriate parts listing. Use of an incorrect battery can result in ignition or explosion of the battery.
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. Use of an incorrect battery can result in ignition or explosion of the battery. La batterie contient du nickel. Ne la démontez pas, ne l’exposez ni au feu ni à l’eau.
Lenovo TB-8504F/Lenovo TB-8504X 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. Use only the battery in the appropriate parts listing. Use of an incorrect battery can result in ignition or explosion of the battery.
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. Si le panneau d’affichage à cristaux liquides se brise et que vous recevez dans les yeux ou sur les mains une partie du fluide, rincez-les abondamment pendant au moins quinze minutes.
Lenovo TB-8504F/Lenovo TB-8504X 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. Aus Sicherheitsgründen die Kunststoffabdeckung, die den unteren Teil der Spannungswandlerplatine umgibt, nicht entfernen.
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 TB-8504F/Lenovo TB-8504X 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. to conform to the requirements of the Department of Health and Human Services 21 Code of Federal Regulations (DHHS 21 CFR) Subchapter J for Class 1 laser products.
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. Radiação por raio laser ao abrir. Não olhe fixo no feixe de luz, não olhe diretamente por meio de instrumentos óticos e evite exposição direta com o feixe de luz.
Lenovo TB-8504F/Lenovo TB-8504X Hardware Maintenance Manual Important service information This chapter presents the following important service information: • “Strategy for replacing FRUs” on page 16 – “Important notice for replacing a system board” on page 17 • “Important information about replacing RoHS compliant FRUs” on page 18 Important: BIOS and device driver fixes are customer-installable. The BIOS and device drivers are posted on the customer support site: http://consumersupport.lenovo.com/.
Important service information Use the 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.
Lenovo TB-8504F/Lenovo TB-8504X 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 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 Before 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 replacing FRUs. • When you replace FRUs, use new nylon-coated screws. • Be extremely careful during such write operations as copying, saving, or formatting.
Lenovo TB-8504F/Lenovo TB-8504X 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, and serial number 8.
Lenovo TB-8504F/Lenovo TB-8504X Lenovo TB-8504F/Lenovo TB-8504X This chapter presents the following product-specific service references and product-specific parts information: • “FRU replacement notices” on page 21 • “Removing and replacing an FRU” on page 23 • “Locations” on page 35 • “Parts list” on page 36 FRU replacement notices This section presents notices related to removing and replacing parts. Read this section carefully before replacing any FRU.
Lenovo TB-8504F/Lenovo TB-8504X Hardware Maintenance Manual • Logic card to plastic Turn an additional 180° after the screw head touches the surface of the logic card: more than 180° (Cross-section) • Torque driver If you have a torque screwdriver, refer to the “Torque” column for each step. • Make sure that you use the correct screws. If you have a torque screwdriver, tighten all screws firmly to the torque shown in the table. Never use a screw that you removed. Use a new one.
Lenovo TB-8504F/Lenovo TB-8504X 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 21. 3. Begin by removing any FRUs that have to be removed before the failing FRU.
Lenovo TB-8504F/Lenovo TB-8504X Hardware Maintenance Manual 1010 Card tray Figure 1. Removal steps of card tray Pry up the card tray cover with your nail, and pull it gently. Pull out the card tray.
Lenovo TB-8504F/Lenovo TB-8504X 1020 Battery cover For access, remove this FRU: • “1010 Card tray” on page 24 Figure 2. Removal steps of battery cover Insert a guitar pick and slide along to release the battery cover. Remove the battery cover.
Lenovo TB-8504F/Lenovo TB-8504X Hardware Maintenance Manual 1030 System board frame For access, remove these FRUs in order: • “1010 Card tray” on page 24 • “1020 Battery cover” on page 25 Figure 3. Removal steps of system board frame Remove screws 1 . 1 1 1 1 1 1 1 Step Screw (quantity) Color Torque 1 M1.4 × 2.5 mm, Cross head, nylokcoated (8) Silver ≥1.5 kgf.cm Remove the system board frame.
Lenovo TB-8504F/Lenovo TB-8504X 1040 Battery pack and main frame DANGER Only use the battery specified in the parts list for your device. Any other battery could ignite or explode. For access, remove these FRUs in order: • “1010 Card tray” on page 24 • “1020 Battery cover” on page 25 • “1030 System board frame” on page 26 Figure 4. Removal steps of battery pack and main frame Detach the connector of the battery pack in the direction shown by arrow. Insert a flat blade to detach the battery pack.
Lenovo TB-8504F/Lenovo TB-8504X Hardware Maintenance Manual Figure 4. Removal steps of battery pack and main frame (continued) Remove the battery pack from its socket. Remove the screws of the main frame. 1 1 1 1 2 2 2 2 1 2 2 2 2 2 1 28 1 1 1 2 Step Screw (quantity) Color Torque 1 M1.4 × 2.5 mm, Cross head, nylokcoated (9) Silver ≥1.5 kgf.cm 2 ST1.4 × 4.0 mm, Cross head (10) Black ≥1.5 kgf.
Lenovo TB-8504F/Lenovo TB-8504X Figure 4. Removal steps of battery pack and main frame (continued) Remove the main frame.
Lenovo TB-8504F/Lenovo TB-8504X Hardware Maintenance Manual 1050 Camera, motor and RF cable For access, remove these FRUs in order: • “1010 Card tray” on page 24 • “1020 Battery cover” on page 25 • “1030 System board frame” on page 26 • “1040 Battery pack and main frame” on page 27 Figure 5. Removal steps of camera, motor and RF cable Detach the front and back camera connectors, and then remove the front and back cameras.
Lenovo TB-8504F/Lenovo TB-8504X Figure 5. Removal steps of camera, motor and RF cable (continued) Pry up the motor. Detach the connectors of the RF cable. Then remove the RF cable.
Lenovo TB-8504F/Lenovo TB-8504X Hardware Maintenance Manual 1060 System board, speaker and microphone Important notices for handling the system board: When handling the system board, bear the following in mind. • Be careful not to drop the system board on a bench top that has a hard surface, such as metal, wood, or composite. • Avoid rough handling of any kind. • In the whole process, make sure not to drop or stack the system board.
Lenovo TB-8504F/Lenovo TB-8504X Figure 6. Removal steps of system board, speaker and microphone (continued) Detach the connector of the side-key FPC, and remove the side-key FPC. Insert a plastic tweezers to release the microphone from its cavity.
Lenovo TB-8504F/Lenovo TB-8504X Hardware Maintenance Manual Figure 6. Removal steps of system board, speaker and microphone (continued) Remove the screws 1. Lift up and remove the system board, speaker and microphone. 1 1 Step Screw (quantity) Color Torque 1 ST1.4 × 4.0 mm, Cross head (2) Black ≥1.5 kgf.cm Detach the other connector of the FPC. Peel off the FPC with a flat blade.
Lenovo TB-8504F/Lenovo TB-8504X Locations Lenovo TAB4 8 overview Model Lenovo TB-8504F Lenovo TB-8504X 1 Version WLAN WLAN + LTE 3 2 9 3 10 4 5 11 6 3 7 8 2 1 Front camera 2 Speakers 3 Micro USB connector 4 Indicator 5 Volume buttons 6 Power button 7 Touch screen 8 Microphone 9 Rear camera 10 Headset jack 11 Card tray 35
Lenovo TB-8504F/Lenovo TB-8504X Hardware Maintenance Manual Parts list This section presents the following service parts: • “Overall” on page 36 • “Screws” on page 38 • “AC adapters” on page 38 • “Label” on page 38 Note: • Each FRU is available for all types or models, unless specific types or models are specified.
Lenovo TB-8504F/Lenovo TB-8504X Table 1. Parts list—Overall No. FRU FRU no. 1 1 1 1 2 3 4 4 4 4 5 5 5 6 6 7 8 9 9 9 9 9 9 9 9 10 10 11 12 TB-8504F Batt cover_BL&*501110055 CS TB-8504F Batt cover_WH&*501110056 CS TB-8504X Batt cover_WH&*501110053 CS TB-8504X Batt cover_BL&*501110054 CS XWD-C L16D1P34 3.85V18.
Lenovo TB-8504F/Lenovo TB-8504X Hardware Maintenance Manual Screws Table 2. Parts list—Screw FRU FRU no. TB-8504 Screw&*46106079 CS TB-8504 Screw_14_40&*46136116 CS 5M88C08136 5M88C08133 CRU ID N N AC adapters Table 3. Parts list— AC adapters FRU FRU no.
Notices Notices Lenovo may not offer the products, services, or features discussed in this document in all countries. Consult your local Lenovo representative for information on the products and services currently available in your area. Any reference to a Lenovo product, program, or service is not intended to state or imply that only that Lenovo product, program, or service may be used.
Lenovo TB-8504F/Lenovo TB-8504X Hardware Maintenance Manual Any performance data contained herein was determined in a controlled environment. Therefore, the result obtained in other operating environments may vary significantly. Some measurements may have been made on development-level systems and there is no guarantee that these measurements will be the same on generally available systems. Furthermore, some measurements may have been estimated through extrapolation. Actual results may vary.
