Samsung NP-R40, Manual

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5- 10
5. Troubleshooting
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Main System Troubles
5. The system is not turned off.
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Check if the AC adapter LED is lit and if the adapter is properly connected to the system.
(Check the adapter LED)
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If the AC adapter is not connected, check the charge status of the battery. Even if the battery
is charged, if the remaining battery charge is too low, the system may not be turned on.
(As the following figure shows, press the PUSH button on the battery and check the remaining
battery charge via the LEDs)
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Check if there are any alien substances in the Power switch.
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Replace the main board.
6. Although system power is supplied, the system does not boot or immediately turns off after being
turned on.
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Since this may be a short circuit in the system, disconnect the power immediately, disassemble
the system and check if there are any conducting alien objects such as a screw inside.
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Check the connection status between the CPU and the Heatsink.
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Replace the memory module and check if it is out of order.
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Reset the RTC Reset terminal next to the memory socket.
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Replace the main board.
7. The PCMCIA card is not inserted or the Eject button does not work.
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This may occur when the insulator within the PCMCIA slot is enwrapped.
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Replace the PCMCIA slot frame and check if it is out of order.
8. There is no sound from the speaker.
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Check if the earphones or headphones are connected to the MIC jack of if there are any alien
substances in the jack.
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Check if the sound is muted after booting up Windows.
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