Samsung SENS R55 Service Manual page 54

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5. TROUBLESHOOTING
disconnect the power from the wall outlet and check if there are any alien objects
such as a loose screw within the product.
Check the connectivity of the connection FPC and cables.
Replace the DC/DC Board and check if the board is out of order.
Replace the memory module and check if the module is out of order.
Replace the Main Board.
7. Cannot insert a PCMCIA card or the remove button does not work properly.
This may happen when the insulator within the PCMCIA slot is pushed inward.
Replace the PCMCIA slot frame and check if it is out of order.
8. Cannot hear the sound.
Check if the volume is set to Mute in the Operating System.
Check the connectivity of the speaker cable and check if the speaker is out of
order.
Check if the Audio Board is out of order.
Replace the Main Board.
9. The HDD is not recognized.
Check the connectivity of the HDD FPC cable and check if the FPC cable is out
of order by replacing it with a new one.
If the HDD is recognized by the CMOS but the 'Operating System Not Found'
message appears while booting, format the HDD and reinstall the operating
system as this may happen when the operating system is corrupted or the HDD is
out of order. If this does not work, replace the HDD.
10. The touchpad does not work or is working abnormally.
Check the connectivity of the touchpad connection cable.
Replace the touchpad module of the Top Assy and check if it is out of order.
11. The battery is not charged or the battery charge LED malfunctions.
Check the standard power voltage of the adapter.
Replace the DC/DC board and check if the board is out of order.
Check if the battery is out of order.
SENS R55 5-6