Lenovo A8-50 Tablet- Manuals

Lenovo A5500 Hardware Maintenance Manual 2 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 ...

Safety information 3 Observe the following rules when working on electrical equipments. • Find the room emergency power-off (EPO) switch, disconnecting the switch or electrical outlet. If an electrical accident occurs, you can then operate the switch or unplug the power cord quickly. • Do not work a...

Safety information 5 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 us...

Lenovo A5500 Hardware Maintenance Manual 6 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 ch...

Safety information 7 The safety notices in this section are provided in English, French, German, Hebrew, Italian, Japanese, and Spanish. Safety notices: multilingual translations Safety notice 1 Before the computer is powered on after FRU replacement, make sure all screws, springs, and other small p...

Lenovo A5500 Hardware Maintenance Manual 8 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 regula...

Safety information 9 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 wh...

Lenovo A5500 Hardware Maintenance Manual 10 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 th...

Safety information 11 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’affi...

Lenovo A5500 Hardware Maintenance Manual 12 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’alimen...

Safety information 13 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, dé...

Lenovo A5500 Hardware Maintenance Manual 14 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 con...

Safety information 15 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 instr...

Lenovo A5500 Hardware Maintenance Manual 16 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 Before repla...

Important service information 17 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 process...

Lenovo A5500 Hardware Maintenance Manual 18 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 ...

General checkout 19 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: General checkout Important notes: • Only certified trained personnel can service t...

Lenovo A5500 Hardware Maintenance Manual 20 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. ...

General checkout 21 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 ...

Lenovo A5500 Hardware Maintenance Manual 22 1. Open the Android Settings screen. 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. – Touch the application icon...

Related service information 23 This chapter presents the following information: • “Security” on page 23 • “Power management” on page 23 Security settings include: SCREEN SECURITY, SIM CARD LOCK (3G version only), PASSWORDS, DEVICE ADMINISTRATION and CREDENTIAL STORAGE. Note: Power management modes a...

Lenovo A5500 Hardware Maintenance Manual 24 This chapter presents the following product-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 44 • “Pa...

Lenovo A5500 Hardware Maintenance Manual 26 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 the Lenovo computer, this problem is addressed with special nylon-co...

Lenovo A5500 27 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 dam...

Lenovo A5500 29 1020 Micro SD card and Micro SIM card Figure 2. Removal steps of Micro SD card and Micro SIM card Insert a finger to open the side door as shown in the picture. Press the SD card or SIM card to make it pop up.

Lenovo A5500 31 1030 Back cover Figure 3. Removal steps of back cover Insert a finger to open the side door as shown in the picture. Remove the screw . Step Screw (quantity) Color Torque M1.4 × 3.0 mm (1) Silver 1 1 1

Lenovo A5500 33 1040 Power key and volume key For access, remove this FRU in order: • “1030 Back cover ” on page 31 Figure 4. Removal steps of power key and volume key Lift up the power key and volume key as shown in the picture.

Lenovo A5500 37 1070 System board For access, remove these FRUs in order: • “1030 Back cover ” on page 31 • “1040 Power key and volume key” on page 33 • “1050 ANT carrier ” on page 34 • “1060 Battery pack” on page 35 Figure 8. Removal steps of system board Peel off the mylar as shown in the picture....

Lenovo A5500 Hardware Maintenance Manual 44 Locations Micro SD card slot 5 10 Micro USB Speaker Volume key Power key Back camera Microphone Earphone jack Speaker Front camera 2 6 3 7 8 9 4 1 11 Micro SIM card slot 5 2 1 3 4 6 8 7 11 10 9

Lenovo A5500 45 This section presents the following service parts: • “Overall” on page 46 • “Screws” on page 47 Parts list Notes: • Each FRU is available for all types or models, unless specific types or models are specified.

Lenovo A5500 Hardware Maintenance Manual 46 Overall Table 1. Parts list – Overall No. or unit name Description FRU FRU no. CRU ID 1 BATTERY 5B19A4657T SUNWODA 7610000097W N BAT CONN CLIP SUS 304 BATT 3052LVP504W N 2Battery cover unit BAT COV BAT COV 3G DARK BLUE 251ALVP505W N BAT COV 3G WHITE 251ALV...

Lenovo A5500 47 Screws Table 2. Parts list—Screw No. or unit name Description FRU FRU no. CRU ID 3LCD unit PROTECTTP TR5001 306OLVP501W N TOUCH PANNEL MCF-080-1235 O-FILM 763LVP5002W N SPONGE TP LCM SPONGE TOP 303MLVP509W N SPONGE TP LCM SPONGE LEFT 303MLVP506W N SPONGE TP LCM SPONGE BOTTOM 303MLVP5...

Lenovo A5500 Hardware Maintenance Manual 48 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,...

Notices 49 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...