Asus C423NA Service Manual

Left View

Front View

Rear View

Components

The illustrations below show the components of the C423

LCD model
The illustration below shows the LCD model.

Top Case
The illustration below shows the top case.

Bottom Case
The illustration below shows the bottom case.

Thermal Module
The illustration below shows the thermal module.

Battery
The illustration below shows the battery.

Main Board
The illustration below shows the main board.

WLAN Module
The illustration below shows the WLAN module.

Touchpad
The illustration below shows the touchpad.

Speaker
The illustration below shows the speaker.

IO Board
The illustration below shows the IO Board.

Disassembly Procedure

Please follow the information provided in this section to perform the complete disassembly procedure of the Notebook. Be sure to use proper tools described before.
ASUS C423 Series Notebook consists of various modules. This chapter describes the procedure for the complete Notebook disassembly and assembly (Assemble document please look up from the last page). In addition, in between procedures, the detailed disassembly procedure of individual modules will be provided for your service needs.

Appropriate Tools
The illustrations below show the appropriate tools that should be used for the notebook's service and repair.

Cross Screwdriver
Please according to different screw specification choose different screwdriver and head. Below photos are for reference only.
Use a cross screwdriver to fasten/remove screws.

Plastic Blade

Tweezers
Use a pair of tweezers to remove/insert flexible cables.

Bottom Case Module
The illustrations below show how to remove the Bottom Case Module.

Remove Bottom Case Module

1. Remove 11 screws on Bottom Case.
   Assembly Notice: follow the reverse numbers to lock screws.
   Screw tightening torque (Kg F-cm): 2.5kg
   Screw tightening torque (Kg F-cm): 2.5kg.
   Parts
   
   • Total screw *11

Remove Top Case Module

1. Use a plastic blade to pry the Bottom case.
   

Parts
C223NA BOTTOM CASE ASSY
(Actual part name depends on different SKU.)

Parts

• C2 C423 BATT/ATL POLY/C21N1808//SMP/359191/2S1P/7.7V/38WH
• Total screw *6

Speaker Module
The illustrations below show how to remove the Speaker Module.
Remove Speaker Module

1. Disconnect the speak cable on the M/B
   Assembly Notice: please well arrange the audio cables and put them in the hook slot as below.
   

Parts

• C423NA SPEAKER//PEGA/04A4-03DJ000

WLAN Antenna Cable
The illustrations below show how to remove the Antenna Cable

Remove WLAN Module

1. Disconnect WLAN cable from the WLAN
   Assembly Notice: black cable is connect to the 'MAIN' input port. White cable is connect to the 'AUX' port.
   
2. Use a plastic blade to pry it.
   Assembly Notice: please well arrange the WLAN cables and put them in the hook slot as below.
   

LCD Module
Remove LCD Module

1. Remove 6 screws on Hinge
   
   Notice: If you need to replace hinges (hinge covers), please make sure hinge (hinge cover) R and hinge (hinge cover) L are the same vendor.
   

Parts

• Total screw * 6
• C223NA_THERMAL_MODULE_ASSY//AURAS
• C423NA-1A HINGE CAP R//PEGA/13N1-63P0301
• C423NA LCD COVER ASSY//PEGA/13N1-63A0201

Thermal Module
The illustration below shows how to remove the Thermal module.

1. Remove 4 screws on the heatsink, take Thermal away.
   Assembly Notice: follow the reverse numbers to lock screws. Screw tightening torque (Kg F-cm): 2kg
   
   Assemble Notice: After replace new MB, please clean remaining CPU and GPU thermal pad on thermal module and then paste new one.
   
   If the unit original has warranty label, please stick the 'WARRANTY VOID' label on thermal module when reassemble main board.
   

Parts

• Total screw * 4
• C223NA_THERMAL_MODULE_ASSY//AURAS

IO Board
The illustrations below show how to remove the IO Board.

Remove IO Board

1. Disconnect the FFC from Main Board.
   
2. Remove 2 screws on the IO Board
   
   
   Assembly notice: Please change new one, If FFC is damage during disassembly.
   Here are some samples of FFC damage:
   

Parts

• Total screw *2
• C223NA IO_BD._0M.
• C223NA IO FFC 30P 0.5MM L114MM//XINYA/X18AA1-4299-F-HF

Motherboard Module
The illustrations below show how to separate the Motherboard module

Remove Motherboard Module

1. Disconnect the Keyboard FPC and Touchpad FFC cable
   Assembly notice: Insert FFC to the bottom until just accord with the line when lock the latch.
   
2. Remove 2 screws on the main board and take the M/B away
   Screw tightening torque (Kg F-cm): 2.0±0.3
   
   

• C423NA MB._4G/N4200/AS//(EMMC32G/AC)/PEGA/9C-N163M0300
• Total screw *2

Touchpad Module
The illustrations below show how to remove the touchpad module.

Remove Touchpad Module

1. Remove 3 screws on Touchpad and disconnect the FFC on the T/P Assembly Notice: follow the reverse numbers to lock screws.
   

• Total screw *3
• TOUCHPAD FOR C201PA//ELAN/S9855D-1000
• C423NA CMOS FPC NONTOUCH//PEGA/0801-9JE0E00

KB MODULE
Assembly Notice:
ECN Change: Please paste the GRAPHITE by following the edge of structure before assembling on the KB MODULE.

LCD Module
The illustrations below show how to remove the LCD Module.

1. Remove the Hinge Cap of LCD moudel
   
2. Use plastic blade to pry up the edge, take the LCD front bezel away.
   

3. Remove the EDP cable and disconnect the camera FPC port.
   

4. Follow below numbers to remove 6 screws on the hinge and take it out. Assembly Notice: follow the reverse numbers to lock screws. Screw tightening torque (Kg F-cm): 2.5KG± 0.2kgf.
   
   Notice: If you need to replace hinges (hinge covers), please make sure hinge (hinge cover) R and hinge (hinge cover) L are the same vendor.
   Notice: when you assemble the hinge please attach the Mylar on the screw, please attach the Mylar to the left edge of the hinge and the lower side edge of the bezel like the follow picture.
   

5. Remove the adhesive slowly by tweezers
   
   Notice : Please slowly pull the adhesive up about 30 degree.
   

6. Remove the EDP Cable horizontally.
   

7. Remove the Camera FPC and take out the camera. Disconnect the camera cable. Remove 2PCS Micphone Rubbers
   

Parts:

• C423NA-1A HINGE R *1
• C423NA-1A HINGE L *1
• C423NA-1A 14.0' HD US *1
• C423NA-1A LCD BEZEL SUB ASSY *1
• Total screw * 6