Category: Ipad and Ipods Repair and Service
Contents of this article
- How to test the battery charger
- How to restore to factory default
- How to disassemble the ideapad
Lenovo ideapad MIIX 300
To verify a symptom, follow the steps
below:
1. Turn off the computer.
2. Connect the AC adapter.
3. Make sure that power is supplied when you turn on the computer.
4. Turn off the computer.
5. Disconnect the AC adapter.
6. Make sure that the battery pack supplies power when you turn on the computer.
If you suspect a power problem, see the appropriate one of the following power supply checkouts:
“Checking the AC adapter”
“Checking operational charging”
Checking the AC adapter
You are here because the computer fails only when the AC adapter is used.
If the power-on indicator does not turn on, check the power cord of the AC adapter for correct continuity and installation.
If the computer does not charge during operation, go to “Checking operational charging”.
To check the AC adapter, follow the steps below:
1. Unplug the AC adapter cable from the computer.
2. Measure the output voltage at the plug of the AC adapter cable. See the following figure:
1. Turn off the computer.
2. Connect the AC adapter.
3. Make sure that power is supplied when you turn on the computer.
4. Turn off the computer.
5. Disconnect the AC adapter.
6. Make sure that the battery pack supplies power when you turn on the computer.
If you suspect a power problem, see the appropriate one of the following power supply checkouts:
“Checking the AC adapter”
“Checking operational charging”
Checking the AC adapter
You are here because the computer fails only when the AC adapter is used.
If the power-on indicator does not turn on, check the power cord of the AC adapter for correct continuity and installation.
If the computer does not charge during operation, go to “Checking operational charging”.
To check the AC adapter, follow the steps below:
1. Unplug the AC adapter cable from the computer.
2. Measure the output voltage at the plug of the AC adapter cable. See the following figure:
Note: Output voltage for the AC adapter pin No. 2 may differ from the
one you
are servicing.
3. If the voltage is not correct, replace the AC adapter.
4. If the voltage is acceptable, do the following:
Replace the system board.
Note: Noise from the AC adapter does not always indicate a defect.
Checking operational charging
To check whether the battery charges properly during operation, use a discharged battery pack or a battery pack that has less than 50% of the total power remaining when installed in the computer.
are servicing.
3. If the voltage is not correct, replace the AC adapter.
4. If the voltage is acceptable, do the following:
Replace the system board.
Note: Noise from the AC adapter does not always indicate a defect.
Checking operational charging
To check whether the battery charges properly during operation, use a discharged battery pack or a battery pack that has less than 50% of the total power remaining when installed in the computer.
Perform operational charging. If the
battery status indicator or icon does not light on, remove the battery pack and
let it return to room temperature. Reinstall the battery pack. If the charge
indicator or icon is still off, replace the battery pack.
If the charge indicator still does not light on, replace the system board. Then reinstall the battery pack.
If the charge indicator still does not light on, replace the system board. Then reinstall the battery pack.
Restore of factory default
The Lenovo ideapad MIIX 300-10IBY computers come with a pre-installed Recovery system. In order to save application files and the initial backedup files of the system, the hard disk in a Lenovo computer includes a hidden partition when it is shipped. If you need to restore the system to the point of your first boot up, just enter the Recovery System (Push-button reset).
The Lenovo ideapad MIIX 300-10IBY computers come with a pre-installed Recovery system. In order to save application files and the initial backedup files of the system, the hard disk in a Lenovo computer includes a hidden partition when it is shipped. If you need to restore the system to the point of your first boot up, just enter the Recovery System (Push-button reset).
DISASSEMBLING PROCEDURE
How to remove LCD cover
Insert a prying tool between the base cover
and the panel module and slide it around the tablet in the direction shown by
figures 1, 2 and 3 to separate the base cover from the rest of the tablet. Then
remove the base cover in the direction shown by figure 4.
Note: Be careful when separating the LCD cover. Do not force apart the LCD cover, otherwise the panel module could be damaged. Use caution when internal plastic tabs are met with the prying tool, excessive force may cause damage.
Note: Be careful when separating the LCD cover. Do not force apart the LCD cover, otherwise the panel module could be damaged. Use caution when internal plastic tabs are met with the prying tool, excessive force may cause damage.
How to remove Heat sink
Peel off the tape that secures the speaker
cable, LCD cable, heat sink, camera and antenna.
Remove the heat sink from the system board
in the direction shown by arrow 1.
How to remove LCD cable
Disconnect battery connector, LCD cable
connectors and touch board
connector in the direction shown by arrows 1, 2 and 3.
connector in the direction shown by arrows 1, 2 and 3.
Remove the LCD cable in the direction shown
by arrow 4.
How to remove Battery and system board
Peel off the adhesive tape securing the
antenna cable. Disconnect the wireless LAN cable (black) 1.
Remove the screws 2.
Remove the system board and battery module
in the direction shown by arrow 3.
