Samsung NP-R20 series - Debugging Flow Chart

5-2
2) Debugging Flow Chart
No problem
No problem
Start
Power on
?
Power on?
?
Check Ontop board &
cable
?
C heck there is any
short in the m ain
board.
?
NO
C h eck Ad apter and
Battery.
No problem
Solution : Replace the defected part or revise the connectivity..
Change M ainboard
an d ch eck it.
?
L C D d isp lay is O K ?
?
C h eck LC D cab le.
?
C heck L C D
Panel and
In v ert e r
?
C h eck R AM and
replace it.
YES
?
Check Northbridge
?
Keyboard function is OK?
?
C h eck K eyboard
connection and
replace it.
?
HDD and ODD
recognition is OK
in C M O S ?
?
C h eck th e co n n ection
and change the unit.
?
OS booting is OK?
?
O S is corru pted ?
?
Touchpad
function is OK?
?
Check Touchpad
FFC (m odule)
?
Check Touchpad
In terface board
?
Check Touchpad
FFC (M /B)
?
Change
Touchpad, and
check function.
YES
It is
problem.
YES
NO
NO
NO
YES
YES
YES
NO
It is
problem .
It is
problem .
No problem
No problem
It is
problem .
It is
problem .
It is
problem .
It is
problem .
It is
problem .
It is
problem .
No problem
No problem
No problem
No problem
No problem
No problem
It is
problem .
It is
problem .
It is
problem.
It is
problem .
It is
problem.
No problem
No problem
No problem
Change M ainboard
and check it.
Change M ainboard
and ch eck it.
Change M ainboard
and check it.
Solution : Replace the defected part or revise the connectivity..
Solution : Replace the defected part or revise the connectivity.
- This Document can not be used without Samsung's authorization -
5. Troubleshooting