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Lenovo A3500 Hardware Maintenance Manual

42

11.

Detach the reset key FPC from the front module of the tablet using a guitar 
pick or a thin flat blade.

Figure 4-11. Detaching the reset key FPC

12.

Remove screws 

 and screw 

 for fixing the PCBA onto the front module 

of the tablet.

Figure 4-12. The screws for fixing the PCBA

Part No.

Screw (quantity)

Color

Torque

Phillips flat head screw, M1.4 x 3.0 (3)

Silver

N/A

Phillips flat head screw (wide), M1.4 x 2.0 
(1)

Silver

N/A

a

a

Summary of Contents for A3500

Page 1: ...Lenovo A3500 Hardware Maintenance Manual ...

Page 2: ...eveloped 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 LIMITED AND RESTRICTED RIGHTS NOTICE If products data computer software or services are delivered pursuant to a General Services Administration GSA contract use reproduction or disclo sure is subject to ...

Page 3: ...em checkout 21 Checking the Computer AC Charger 21 Checking the internal battery status 22 Related service information 23 Security 23 Power management 23 Activating Deactivating the Display 23 Lenovo A3500 24 Specifications 24 FRU replacement notices 26 Screw notices 26 Removing and replacing an FRU 27 1010 Rear cover and side key 28 1020 Battery pack 31 1030 Rear camera 35 1040 PCBA 37 1050 Recei...

Page 4: ...ty information required for servicing computers The product specific section includes service reference and product specific parts information About this manual Important 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 in...

Page 5: ...ervice 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 Safety information ...

Page 6: ...from all personnel while you are servicing the machine Keep your toolcase away from walk areas so that other people will not trip it over Do not wear loose clothing that can be trapped in the moving parts of the machine Make sure that your sleeves are fastened or rolled up above your elbows If your hair is long fasten it Insert the ends of your necktie or scarf inside clothing or fasten it with th...

Page 7: ...ck Attention An electrical shock can occur only when there is a complete circuit By observing the above rule you may prevent a current from passing through your body When using testers set the controls correctly and use the approved probe leads and accessories for that tester Stand on suitable rubber mats obtained locally if necessary to insulate you from grounds such as metal floor strips and mac...

Page 8: ... a plastic dental mirror The surface is conductive such touching can cause personal injury and machine damage Do not service the following parts with the power on when they are removed from their normal operating places in a machine Power supply units Pumps Blowers and fans Motor generators and similar units This practice ensures correct grounding of the units If an electrical accident occurs Caut...

Page 9: ... determine whether there are any potential unsafe conditions use the following checklist at the beginning of every service task Begin the checks with the power off and the power cord disconnected Checklist 1 Check exterior covers for damage loose broken or sharp edges 2 Turn off the computer Disconnect the power cord 3 Check the power cord for a A third wire ground connector in good condition Use ...

Page 10: ...at is especially useful when handling ESD sensitive devices Select a grounding system such as those listed below to provide protection that meets the specific service requirement Attach the ESD ground clip to any frame ground ground braid or green wire ground When working on a double insulated or battery operated system use an ESD common ground or reference point You can use coax or connector outs...

Page 11: ... Austausch der Computer wieder angeschlossen wird muß sichergestellt werden daß keine Schrauben Federn oder andere Kleinteile fehlen oder im Gehäuse vergessen wurden Der Computer muß geschüttelt und auf Klappergeräusche geprüft werden Metallteile oder splitter können Kurzschlüsse erzeugen Prima di accendere l elaboratore dopo che é stata effettuata la sostituzione di una FRU accertarsi che tutte l...

Page 12: ...en Sie darf nicht zerlegt wiederaufgeladen kurzgeschlossen oder Feuer oder Wasser ausgesetzt werden Bei der Entsorgung die örtlichen Bestimmungen für Sondermüll beachten Beim Ersetzen der Bereitschafts oder Systembatterie nur Batterien des Typs verwenden der in der Ersatzteilliste aufgeführt ist Der Einsatz falscher Batterien kann zu Entzündung oder Explosion führen Alcune batterie di riserva cont...

Page 13: ...eschlossen oder Feuer oder Wasser ausgesetzt werden Bei der Entsorgung die örtlichen Bestimmungen für Sondermüll beachten Beim Ersetzen der Batterie nur Batterien des Typs verwenden der in der Ersatzteilliste aufgeführt ist Der Einsatz falscher Batterien kann zu Entzündung oder Explosion führen La batteria contiene piccole quantità di nichel Non smontarla gettarla nel fuoco o nell acqua né cortoci...

Page 14: ...es Typs dürfen nicht aufgeladen zerlegt über 100 C erhitzt oder verbrannt werden Auch darf ihr Inhalt nicht mit Wasser in Verbindung gebracht oder der zur richtigen Polung angebrachte Verbindungsstecker entfernt werden Bei der Entsorgung die örtlichen Bestimmungen für Sondermüll beachten Beim Ersetzen der Batterie nur Batterien des Typs verwenden der in der Ersatzteilliste aufgeführt ist Der Einsa...

Page 15: ...ten Der LCD Bildschirm besteht aus Glas und kann zerbrechen wenn er unsachgemäß behandelt wird oder der Computer auf den Boden fällt Wenn der Bildschirm beschädigt ist und die darin befindliche Flüssigkeit in Kontakt mit Haut und Augen gerät sollten die betroffenen Stellen mindestens 15 Minuten mit Wasser abgespült und bei Beschwerden anschließend ein Arzt aufgesucht werden Nel caso che caso l LCD...

Page 16: ...ttery can produce enough current to burn personnel or combustible materials Bien que le voltage des batteries principales soit peu élevé le court circuit ou la mise à la masse d une batterie peut produire suffisamment de courant pour brûler des matériaux combustibles ou causer des brûlures corporelles graves Obwohl Hauptbatterien eine niedrige Spannung haben können sie doch bei Kurzschluß oder Erd...

Page 17: ...et déconnectez tous les cordons d interface Die Stromzufuhr muß abgeschaltet alle Stromkabel aus der Steckdose gezogen der Akku entfernt und alle Verbindungskabel abgenommen sein bevor eine FRU entfernt wird Prima di rimuovere qualsiasi FRU spegnere il sistema scollegare dalle prese elettriche tutti i cavi di alimentazione rimuovere la batteria e poi scollegare i cavi di interconnessione Antes de ...

Page 18: ...vice could result in exposure to hazardous laser radiation There are no serviceable parts inside those drives Do not open Laser compliance statement CAUTION Use of controls or adjustments or performance of procedures other than those specified herein might result in hazardous radiation exposure O uso de controles ajustes ou desempenho de procedimentos diferentes daqueles aqui especificados pode re...

Page 19: ...luz Rayonnement laser si carter ouvert Évitez de fixer le faisceau de le regarder directement avec des instruments optiques ou de vous exposer au rayon Laserstrahlung bei geöffnetem Gerät Nicht direkt oder über optische Instrumente in den Laserstrahl sehen und den Strahlungsbereich meiden Kinyitáskor lézersugár Ne nézzen bele se szabad szemmel se optikai eszközökkel Kerülje a sugárnyalábbal való é...

Page 20: ...ervicing 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 If an adapter or a device consists of...

Page 21: ...itive Improper handling can cause damage to those components and may cause a system malfunction Attention When handling a system board Do not drop the system board or apply any excessive force to it Avoid rough handling of any kind Avoid bending the system board and hard pushing to prevent cracking at each BGA Ball Grid Array chipset ...

Page 22: ...uppliers to be ready to support Lenovo s requirements and schedule in the EU Products sold in 2005 and 2006 will contain some RoHS compliant FRUs The following statement pertains to these products and any product Lenovo produces containing RoHS compliant FRUs RoHS compliant FRUs have unique FRU part numbers Before or after the RoHS implementation date failed RoHS compliant parts must always be rep...

Page 23: ...ce might have been altered If you select an incorrect drive data or programs might be overwritten Replace an FRU only with another FRU of the correct model When you replace an FRU make sure that the machine model and the FRU part number are correct by referring to the FRU parts list An FRU should not be replaced just because of a single unreproducible failure Single failures can occur for a variet...

Page 24: ...ring to the following list The following are not covered under warranty LCD panel cracked from the application of excessive force or from being dropped Scratched cosmetic parts Distortion deformation or discoloration of the cosmetic parts Plastic parts latches pins or connectors that have been cracked or broken by excessive force Damage caused by liquid spilled into the system Damage caused by the...

Page 25: ...e internal battery status on page 22 Checking the Computer AC Charger When you use the computer AC Charger to charge the tablet but no power is charged see the instructions in this topic to check the computer AC Charger To check the computer AC Charger do the following 1 Disconnect the micro USB cable from the tablet 2 Measure the output voltage across the connector marked B of the micro USB cable...

Page 26: ...curate information about the battery status To get the accurate information about the battery status of the tablet do the following 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 Pull down the application icon from the action ba...

Page 27: ... power consumption the computer has three power management modes screen blank sleep standby and hibernation Activating Deactivating the Display With the display deactivated press the Power button on the computer to activate the display The computer display will then illuminate indicating that it has been activated If you do not need to use your computer temporarily you can press the Power button t...

Page 28: ...ng table lists the specifications of the Lenovo A3500 tablet Table 1 Specifications Feature Description Size Weight Size 198mm x 121 2mm x 9 9mm Weight Appr 320g System CPU 1 3GHz Quad core Hardware Platform MT8382 RAM 1GB Storage Capacity 8GB 16GB LCD 7 1 280 x 800 pixels Integrated Camera Main camera 5 0Mega pixels rear side Sub camera 2 0Mega pixels front side Battery 1 cell Lithium battery 3 4...

Page 29: ...USB 2 0 5 pin Earphone 3 5mm SIM card slot T flash card slot Communication WiFi 802 11b g n WiFi Direct WiFi display Miracast support HDCP 1 X A GPS supporting GPS Bluetooth 4 0 FM radio Others Gravity sensor Proximity sensor Vibrator ...

Page 30: ...ag Always use new screws Use a torque screwdriver if you have one Tighten screws as follows Plastic to plastic Turn an additional 90 after the screw head touches the surface of the plastic part Logic card to plastic Turn an additional 180 after the screw head touches the surface of the logic card Torque driver If you have a torque screwdriver refer to the Torque column for each step Make sure that...

Page 31: ...by the arrow in the figure 7 To put the new FRU in place reverse the removal procedures and follow any of the notes that pertain to replacement For information about connecting and arranging internal cables see Locations on page 65 8 When replacing an FRU use the correct screw as specified in the procedures Attention After replacing an FRU do not turn on the computer until you have made sure that ...

Page 32: ...a guitar pick Figure 1 1 Opening the card slot cover 2 Remove screw in the card slot recess Figure 1 2 The screw in the card slot recess Part No Screw quantity Color Torque Phillips flat head screw M1 4 x 3 0 1 Silver N A a a Note The screw is sealed by the manufacturer for checking the warranty qualification of the product ...

Page 33: ... one hand and use a guitar pick to unlock the rear cover from the tablet along the joint line as shown in the figure below Figure 1 3 Unlocking the rear cover along the joint line 4 Remove the rear cover Figure 1 4 The removed rear cover ...

Page 34: ...Lenovo A3500 Hardware Maintenance Manual 30 5 Detach the side key from the rear cover using a pair of tweezers Figure 1 5 Detaching the side key 6 Remove the side key Figure 1 6 The removed side key ...

Page 35: ...head screw wide M1 4 x 2 0 1 Silver N A 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 The battery contains lithium and can explode if not properly used handled or disposed of Dispose of the used battery according to the instructions Do not Throw or immers...

Page 36: ...Lenovo A3500 Hardware Maintenance Manual 32 2 Remove the steel frame from the front module as shown in the figure below Figure 2 2 Removing the steel frame ...

Page 37: ...CBA using a guitar pick Figure 2 3 Detaching the battery FPC 4 Detach the battery pack from its seat by inserting a guitar pick into the joint surface and then cutting along the joint line in the direction shown in the figure below Figure 2 4 Detaching the battery pack ...

Page 38: ...Lenovo A3500 Hardware Maintenance Manual 34 5 Remove the battery pack from the front module of the tablet Figure 2 5 The removed battery pack ...

Page 39: ...and side key on page 28 1020 Battery pack on page 31 1 Detach the FPC of the rear camera from its connector on the PCBA using a guitar pick Figure 3 1 Detaching the FPC of the rear camera 2 Detach the rear camera from its seat using a thin flat blade Figure 3 2 Detaching the rear camera ...

Page 40: ...Lenovo A3500 Hardware Maintenance Manual 36 3 Remove the rear camera from the tablet Figure 3 3 The removed rear camera ...

Page 41: ...front module respectively at the other end Figure 4 1 Position of the conductive fabrics 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 Avoid rough handling of any kind Make sure not to drop or stack the PCB in the whole process Make sur...

Page 42: ... Hardware Maintenance Manual 38 2 Peel off the mylar on the TP FPC connector on the PCBA Figure 4 2 Position of the mylar 3 Unlock the TP FPC connector using a guitar pick Figure 4 3 Unlocking the TP FPC connector ...

Page 43: ... at the same time pulling out the FPC from its connector Figure 4 4 Detaching the TP FPC 5 Peel off the mylar on the main FPC connector on the PCBA Figure 4 5 Position of the mylar 6 Unlock the main FPC connector on the PCBA using a guitar pick Figure 4 6 Unlocking the main FPC connector ...

Page 44: ...Manual 40 7 Pull out the main FPC from its connector using a pair of tweezers Figure 4 7 Pulling out the main FPC 8 Detach the RF cable of the speaker and antenna assembly from its connector on the PCBA Figure 4 8 Detaching the RF cable ...

Page 45: ...front module of the tablet using a guitar pick or a thin flat blade Figure 4 9 Detaching the power key FPC 10 Detach the volume key FPC from the front module of the tablet using a guitar pick or a thin flat blade Figure 4 10 Detaching the volume key FPC ...

Page 46: ...or a thin flat blade Figure 4 11 Detaching the reset key FPC 12 Remove screws and screw for fixing the PCBA onto the front module of the tablet Figure 4 12 The screws for fixing the PCBA Part No Screw quantity Color Torque Phillips flat head screw M1 4 x 3 0 3 Silver N A Phillips flat head screw wide M1 4 x 2 0 1 Silver N A a a ...

Page 47: ...ure from the front module of the tablet while taking care not to damage the FPCs that have been disconnected from it Figure 4 13 The detached PCBA 14 Turn over the PCBA and then peel off the mylar on the soldering pad of the power key FPC and volume key FPC Figure 4 14 Position of the mylar on the side key FPCs ...

Page 48: ...ce Manual 44 15 Desolder the power key FPC from the PCBA using a soldering iron and a solder sucker Figure 4 15 Position of desoldering the power key FPC 16 Remove the power key FPC from the PCBA Figure 4 16 The removed power key FPC ...

Page 49: ...iron and a solder sucker Figure 4 17 Position of desoldering the volume key FPC 18 Remove the volume key FPC from the PCBA Figure 4 18 The removed volume key FPC 19 Peel off the mylar on the soldering pad of the reset key FPC Figure 4 19 Position of the mylar on the reset key FPC ...

Page 50: ...g a soldering iron and a solder sucker Figure 4 20 Position of desoldering the reset key FPC 21 Remove the reset key FPC from the PCBA Figure 4 21 The removed reset key FPC 22 Peel off the mylar on the soldering pad of the front camera Figure 4 22 Position of the mylar on the front camera FPC ...

Page 51: ...nd a solder sucker Figure 4 23 Position of desoldering the front camera 24 Detach the front camera from its seat on the PCBA using a guitar pick or a thin flat blade 25 Remove the front camera from the PCBA Figure 4 24 The removed front camera The PCBA is now isolated and removed from the tablet ...

Page 52: ... the following FRUs Rear camera Step 1 in 1030 Rear camera on page 35 PCBA with other parts connected Step 1 to 13 in 1040 PCBA on page 37 1 Detach the receiver from its seat on the front module of the tablet by prying it off using a pair of tweezers Figure 5 1 Prying off the receiver 2 Remove the receiver from the front module of the tablet Figure 5 2 The removed receiver ...

Page 53: ... 28 1020 Battery pack on page 31 and detach the following FRUs Rear camera Step 1 in 1030 Rear camera on page 35 PCBA with other parts connected Step 1 to 13 in 1040 PCBA on page 37 1 Remove the power key FPC from the PCBA according to Step 14 to 16 in 1040 PCBA on page 37 Figure 6 1 The removed power key FPC ...

Page 54: ...key on page 28 1020 Battery pack on page 31 and detach the following FRUs Rear camera Step 1 in 1030 Rear camera on page 35 PCBA with other parts connected Step 1 to 13 in 1040 PCBA on page 37 1 Remove the volume key FPC from the PCBA according to Step 14 17 and 18 in 1040 PCBA on page 37 Figure 7 1 The removed volume key FPC ...

Page 55: ... 28 1020 Battery pack on page 31 and detach the following FRUs Rear camera Step 1 in 1030 Rear camera on page 35 PCBA with other parts connected Step 1 to 13 in 1040 PCBA on page 37 1 Remove the reset key FPC from the PCBA according to Step 19 to 21 in 1040 PCBA on page 37 Figure 8 1 The removed reset key FPC ...

Page 56: ...de key on page 28 1020 Battery pack on page 31 and detach the following FRUs Rear camera Step 1 in 1030 Rear camera on page 35 PCBA with other parts connected Step 1 to 13 in 1040 PCBA on page 37 1 Remove the front camera from the PCBA according to Step 22 to 25 in 1040 PCBA on page 37 Figure 9 1 The removed front camera ...

Page 57: ...el off the mylar on the soldering points of the speaker and antenna assembly the microphone and the vibrator motor Figure 10 1 Peeling off the mylar on the soldering points 2 Desolder the wires of the speaker and antenna assembly from the small PCB of the main FPC using a soldering iron and a solder sucker Figure 10 2 Position of desoldering the speaker wires ...

Page 58: ...ach the RF cable of the speaker and antenna assembly from its connector on the PCBA Figure 10 3 Detaching the RF cable 4 Move out the RF cable from the cable duct in the front module of the tablet Figure 10 4 Move out the RF cable from the cable duct ...

Page 59: ...et Figure 10 5 The screws on the speaker and antenna assembly 6 Detach the speaker and antenna assembly from the front module while slowly peeling off the antenna foil Figure 10 6 Detaching the speaker and antenna assembly Part No Screw quantity Color Torque Phillips flat head screw M1 4 x 3 0 3 Silver N A a a ...

Page 60: ...Lenovo A3500 Hardware Maintenance Manual 56 7 Remove the speaker and antenna assembly from the front module of the tablet Figure 10 7 The removed speaker and antenna assembly ...

Page 61: ...nd antenna assembly onto the front module of the tablet Figure 11 1 The screws on the speaker and antenna assembly 2 Peel off the mylar on the soldering points of the speaker and antenna assembly the microphone and the vibrator motor Figure 11 2 Peeling off the mylar on the soldering points Part No Screw quantity Color Torque Phillips flat head screw M1 4 x 3 0 3 Silver N A a a ...

Page 62: ...iron and a solder sucker Figure 11 3 Position of desoldering the microphone wires 4 Detach the speaker and antenna assembly from the front module and then remove the rubber socket covering the microphone Figure 11 4 Removing the rubber socket 5 Remove the microphone from the front module of the tablet Figure 11 5 Removing the microphone ...

Page 63: ... and antenna assembly onto the front module of the tablet Figure 12 1 The screws on the speaker and antenna assembly 2 Peel off the mylar on the soldering points of the speaker and antenna assembly the microphone and the vibrator motor Figure 12 2 Peeling off the mylar on the soldering points Part No Screw quantity Color Torque Phillips flat head screw M1 4 x 3 0 3 Silver N A a a ...

Page 64: ...igure 12 3 Position of desoldering the wires of the vibrator motor 4 Detach the speaker and antenna assembly from the front module and then detach the vibrator motor from its seat on the front module using a thin flat blade Figure 12 4 Detaching the vibrator motor 5 Remove the vibrator motor from the front module of the tablet Figure 12 5 The removed vibrator motor ...

Page 65: ...in 1100 Speaker and antenna assembly on page 53 Microphone Step 2 in 1110 Microphone on page 57 Vibrator motor Step 2 in 1120 Vibrator motor on page 59 1 Disconnect the main FPC from the PCBA by performing Step 1 and Step 5 to 7 in 1040 PCBA on page 37 2 Peel off the mylar on the FPC connector at the other end the small PCB end of the main FPC Figure 13 1 Peeling off the mylar on the main FPC conn...

Page 66: ...2 3 Unlock the main FPC connector in the front module using a guitar pick Figure 13 2 Unlocking the main FPC connector 4 Peel off the main FPC from the front module of the tablet as shown in the figure below Figure 13 3 Peeling off the main FPC ...

Page 67: ...m its connector using a pair of tweezers Figure 13 4 Pulling out the main FPC 6 Detach the small PCB of the main FPC from the front module of the tablet using a guitar pick or a thin flat blade Figure 13 5 Detaching the small PCB of the main FPC ...

Page 68: ...Lenovo A3500 Hardware Maintenance Manual 64 7 Remove the main FPC from the tablet Figure 13 6 The removed main FPC ...

Page 69: ...Lenovo A3500 65 Front view Receiver Front camera Speaker Locations a b ...

Page 70: ...Lenovo A3500 Hardware Maintenance Manual 66 Rear view Micro USB connection Rear camera Earphone socket SIM card slot T flash card slot Microphone Volume key Power key ...

Page 71: ...Lenovo A3500 67 This section presents the following service parts Overall on page 67 Screw on page 69 Overall Parts list ...

Page 72: ...46 N 5 A3500 PCBA 62038027 N 6 A3500 microphone 26214566 N 7 A3500 front camera 26402319 N 8 A3500 main FPC 66800646 66800654 66800656 N 9 A3500 rear camera 89502534 89502536 N 10 A3500 power key FPC 66800407 66800658 66800662 N 11 A3500 receiver 26200948 N 12 A3500 volume key FPC 66800408 66800659 66800663 N 13 A3500 reset key FPC 66800409 66800660 66800664 N 14 A3500 front module 50100530 N 15 A...

Page 73: ...Lenovo A3500 69 Screw Table 2 Parts list Screw FRU P N CRU ID Phillips flat head screw M1 4 x 3 0 46104009 N Phillips flat head screw wide M1 4 x 2 0 46100071 N ...

Page 74: ...pply to you This information could include technical inaccuracies or typographical errors Changes are periodically made to the information herein these changes will be incorporated in new editions of the publication Lenovo may make improvements and or changes in the product s and or the program s described in this publication at any time without notice The products described in this document are n...

Page 75: ...arantee that these measurements will be the same on generally available systems Furthermore some measurements may have been estimated through extrapolation Actual results may vary Users of this document should verify the applicable data for their specific environment Lenovo and the Lenovo logo are trademarks of Lenovo in the United States or other countries or both Other company product or service...

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