Asus TP420IA Repair Manual
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Asus TP420IA Repair Manual

Asus TP420IA Repair Manual

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Disassembly Procedure
Repair Manual
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Summary of Contents for Asus TP420IA

  • Page 1 Disassembly Procedure Repair Manual...
  • Page 2 Disassembly Procedure Service Overview Pre-repair checklist...
  • Page 3 Disassembly Procedure Precautions Before you perform any service or repair on the notebook, please follow the steps below first. 1. Be sure that the notebook is powered down. 2. Disconnect the AC plug from the notebook. 3. Remove all rings, watches and any other metal objects from your hands. 4.
  • Page 4 Disassembly Procedure 9. Screw Appearance Criteria. If the screws have the following damaged appearance, please do not use. a. Shape deformed. b. Paint scratched off. c. Rusty. d. Damaged head – unable to drive in. e. Damaged unable to securely tighten. 10.The following chapter includes all part numbers mentioned in service guide are used for reference only, actual part name depends on different SKU, if you need the exact part number for ordering please refer to the orderbook.
  • Page 5 Disassembly Procedure Appropriate Tools The illustrations below show the appropriate tools that should be used for the notebook’s service and repair. ➢ Cross Screwdriver Please accord to different screw specification to choose different screwdriver and head. Below photos are for reference only. Use a cross screwdriver to fasten/remove screws.
  • Page 6 Disassembly Procedure ➢ Thickness gauge Thickness compass specification 0.05mm-1.5mm. Use it to measure the gap.
  • Page 7 Disassembly Procedure Before disassemble any parts, please disconnect all power source firstly, ex: AC plug/Battery connector/Power protect screw etc. Bottom Case Module The illustrations below show how to remove the Bottom Case Module. Notice: After disassembled bottom case, please be sure disconnect the battery more than ten seconds in order to avoid to damage any parts.
  • Page 8 Disassembly Procedure 2. Use plastic blade to pry Bottom Case and remove it. Assembly Notice: Check the conductive sponges whether exist on the bottom case when assemble the bottom case.
  • Page 9 Disassembly Procedure Snap as below: Parts: ⚫ Total screw * 10 ⚫ TP420IA-2K BOTTOM CASE ASSY ⚫ TP420IA-2K K/B_MODULE* 1 (Actual part name depends on different SKU)

  • Page 10: Battery Module

    Disassembly Procedure Battery Module The illustrations below show how to remove the Battery Module. Push back the anti-off metal then disconnect the battery cable from MB. Notice: Before disassembly, please be sure to pull out adapter and disconnect the battery more than ten seconds in order to avoid IC damage.
  • Page 11 Disassembly Procedure 3. Remove the Battery Parts: ⚫ Total screw * 5 ⚫ TP412UA BATT *1 (Actual part name depends on different SKU)
  • Page 12 Disassembly Procedure WLAN & Speaker Module The illustrations below show how to remove the antenna & speaker Module. 1. Disconnect the WLAN antenna connector from the MB. Assembly Notice: Black main cable connect the indicator number 2(▲MAIN), white aux cable connect the indicator number 1(∆AUX).
  • Page 13 Disassembly Procedure SCREW M2*2.5L SILVER #1 NY 3. Disconnect below connectors and remove TP conductive sponge firstly, shows as below. TP conductive sponge 4. Disconnect below speaker connector, shows as below. Assembly Notice: Must place the speaker cables in the hook slot carefully as below and stick TP conductive sponge.
  • Page 14 Assemble Notice: Please align the pin to assemble the speaker module. Parts ⚫ TP425IA SPEAKER*1 ⚫ TP420IA WIFI5*1 ⚫ TP420IA WIFI ANT 2.4G/5G *1 ⚫ TP420IA TP TO KB GASKET *1 ⚫ Total SCREW*1 (Actual part name depends on different SKU.)

  • Page 15: Fan Module

    Disassembly Procedure Fan Module The illustrations below show how to remove the fan Module. 1. Remove EDP cable firstly, then remove 3 screws and pull out the Fan Cables. Assembly Notice: Follow the reverse numbers to lock screws. Screw tightening torque: 2.0KG±0.2kgf SCREW M2*3.5L K B-ZN #1 NY 2.
  • Page 16 Disassembly Procedure Notice：Please use the correct technique of taking fans in order to avoid being out of shape. Correct demonstration Wrong demonstration Parts: ⚫ Total screw * 3 ⚫ TP420IA THERMAL FAN *1 (Actual part name depends on different SKU.)
  • Page 17 Disassembly Procedure SSD&DDR Module The illustrations below show how to remove the SSD Module. Remove AL Mylar and DDR shielding firstly, shows as below. Assembly Notice: The THERMAL AL Mylar must touch the DDR shielding. Al Mylar DDR shielding DDR Shielding THERMAL_AL Mylar 2.
  • Page 18 Disassembly Procedure 3. Remove 1 screw firstly, then remove SSD and DDR, shows as below. Note: Open the clips firstly when remove the DDR from MB. Clip Clip SCREW M2*2.5L SILVER #1 NY Note: DDR shielding contain 5 different parts, must note the TH PAD thickness is different.

  • Page 19: Thermal Module

    Disassembly Procedure Parts: ⚫ Total screw * 1 ⚫ TP420IA SSD 512G_22*80*1 ⚫ TP420IA SoDIMM_1.2 V_4G_DDR4 3200 MHZ * 1 ⚫ TP420IA SSD GASKET * 1 ⚫ TP420IA SHIELDING SPONGE * 1 ⚫ TP420IA MET DDR SHIELD * 1 ⚫...
  • Page 20 Disassembly Procedure SCREW M2*2.5L SILVER #1 NY Notice: Location:[GPU/CPU] Thermal material: Main: GA500 Grease Thermal grease thickness = 0.2 ~ 0.3mm CPU_AL assembly notice: The AL must touch DDR shielding.
  • Page 21 Disassembly Procedure Parts: ⚫ Total screw * 4 ⚫ TP420IA THERMAL MOD ASSY *1 ⚫ TP420IA CPU AL FOIL *1 (Actual part name depends on different SKU.) Motherboard Module The illustrations below show how to remove the Motherboard Module. Disconnect 2 FFC cables, then remove 5 screws which locked on the MB, shows as below.
  • Page 22 Disassembly Procedure SCREW M2*3.5L Assembly notice: Please change new one, if FFC damaged during disassembly. There are some FFC cables damaged sample.
  • Page 23 Disassembly Procedure 2. Take off the motherboard from bottom case, shows as below.
  • Page 24 13NB0RN0T29011 TP420IA MB_MYLAR_V3//HUABEI/HQ22280944000 Parts: ⚫ Total screw *5 ⚫ TP420IA PW TO MB FFC ZIF 8PIN 44.5MM * 1 ⚫ TP420IA USB TO MB FFC ZIF 12PIN 85MM * 1 ⚫ TP420IA MB* 1 ⚫ TP420IA FP TO MB FFC ZIF 8PIN 152.5MM * 1 ⚫...
  • Page 25 Disassembly Procedure USB&PUR board Module The illustrations below show how to remove the USB board Module. 1. Disconnect the PUR FFC cable from the PUR board and remove 1 screw, shows as below. Assembly Notice: Follow the reverse numbers to lock screws. Screw tightening torque: 2.0KG±...
  • Page 26 4. Check the PUR board, shows as below. Parts ⚫ TP420IA BUTTON_BD.// *1 ⚫ TP420IA USB_BD.// *1 ⚫ Total screw *2 ⚫ TP420IA PW TO MB FFC ZIF 8PIN 44.5MM*1 ⚫ TP420IA USB TO MB FFC ZIF 12PIN 85MM*1 (Actual part name depends on different SKU.)

  • Page 27: Touchpad Module

    Disassembly Procedure Touchpad Module The illustrations below show how to remove the Touchpad Module. 1. Disconnect the TP FFC and remove TP conductive sponge, shows as below Assembly notice: Stick the TP conductive sponge after assembled the TP, shows as below.
  • Page 28 Disassembly Procedure 2. Remove 3 screws, shows as below Assembly Notice: Follow the reverse numbers to lock screws. Screw tightening torque: 2.0KG± 0.2kgf...
  • Page 29 Here are some samples of FFC damaged: Parts: ⚫ Total screw * 3 ⚫ TP420IA FP TO MB FFC ZIF 8PIN 152.5MM *1 ⚫ TP420IA-2K TOUCHPAD(or NUMBER PAD) MOD * 1 ⚫ TP420IA TP TO KB GASKET * 1 (Actual part name depends on different SKU.)
  • Page 30 Disassembly Procedure Top Case Module The illustrations below show how to remove the Top Case Module. Remove 4 screws in each side of the hinge, then separate the Top case module and Bottom case module. Assembly Notice: Follow the reverse numbers to lock screws. Screw tightening torque: 2.0KG±...
  • Page 31 Disassembly Procedure Roll up the hinge, shows as below Separate bottom case module and top case module.
  • Page 32 Disassembly Procedure Check the bottom case module, the sponge can’t be missing, shows as below. Parts: ⚫ Total screw * 6 ⚫ TP420IA-2K K/B_MODULE * 1 (Actual part name depends on different SKU.)

  • Page 33: Lcd Module

    Disassembly Procedure LCD Module The illustrations below show how to remove the LCD Module. 1. Use disassembly tool to pry up the LCD bezel cap firstly, shows as below. 2. Remove the bezel cap, shows as below. 3. Remove 4 screws, shows as below.
  • Page 34 Disassembly Procedure SCREW M1.6*2.3L Please check the adhesive is type A or type B Type A （before Aug 2020 include Aug ） Type B （after Aug 2020） Pull out the adhesive (Type A)
  • Page 35 Disassembly Procedure Notice :The type A adhesive is too short to pull out，you can use two methods to pull out them（If type B adhesive is hard to remove，you can also use these two methods） a. Use hair drier（we suggest use this method！ ！ ！ ） b.
  • Page 36 Disassembly Procedure Right side Pull out the easy-pull glue (adhesive) in left and right side gently. Notice: Please keep pulling at a constant angle of more than 30 degrees. Don't break it, especially at the beginning.
  • Page 37 Disassembly Procedure 30゜ 5. Separate the LCM from the top case module. Notice: Shows as below, use two hands to take LCM out from bottom side firstly. 6. Separate the TP board from LCM module. 6.1 Shows as below, the TP board placed on the bottom frame with glue tap. 6.2 Shows as below, roll up the TP board and disconnect the LCM cables.
  • Page 38 Disassembly Procedure 6.3 Remove the TP board. 6.4 Check the TP board. 7. Tear off the film on the LCD and pick up the hoop on the connector.
  • Page 39 Disassembly Procedure camera module, then disconnect the camera cable, shows as below. Pry up Assembly notice: Align the pin hole to assemble the camera module. Pin hole Pin hole Notice: 1. Shows as below, camera module contain 4 parts, no one can be missing. The gray MIC rubber should be placed on the right side, and the black one is on left side, can’t reverse.
  • Page 40 Disassembly Procedure TP420IA MIC RUBBER R BLACK TP420IA MIC RUBBER L GREY TP420IA Camera TP420IA CCD AL FOIL V2 9. Remove the WIFI ANT. Assembly Notice: Follow the fix pin to place the WIFI module correctly as below. WIFI Antenna assemble SOP...
  • Page 41 Disassembly Procedure b.Left side c.Downside d.Main Antenna top side...
  • Page 42 Disassembly Procedure e.Right side f.Downside...
  • Page 43 Disassembly Procedure Notice: Please make sure all cables inserted in the hook as below. Remove 6 screws which locked on the hinge, shows as below. Note: Must be careful to pry up this module, it is easily damaged component. SCREW M2*3L, OD 7mm...
  • Page 44 Attention: Please stick 2 new easy tapes when you assemble it. The positions of the tapes shows as below, follow the mark line to stick the easy tap. Warning: the right and left LALA adhesive is different, must follow below indication to place it. TP420IA LALA_ADHESIVE_L TP420IA LALA_ADHESIVE_R...
  • Page 45 Parts: ⚫ Total screw * 6 ⚫ TP420IA LCD MOD*1 ⚫ TP420IA CAM *1 ⚫ TP420IA EDP CABLE 40PIN 385MM*1 ⚫ TP420IA TOUCHPANEL CONTROL_BD. *1 ⚫ TP420IA-2K LCD COVER ASSY *1 ⚫ TP420IA BEZEL CAP BLACK *1 ⚫ TP420IA WIFI ANT 2.4G/5G *1 ⚫...
  • Page 46 Disassembly Procedure Function Accessories 1. Below material which marked has functional, can’t be missing...
  • Page 47 Disassembly Procedure...

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