Samsung FIRENZE-R, Service Manual

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5. TROUBLESHOOTING
SENS R5 5 5-5
3) Location of Fault and Check Points by Symptom
LCD Related Symptoms
1. The LCD screen is dimmer or the screen color is distorted.
Æ Check the connection status of the LCD cable connector of the main board and the
connection between the LCD cable and LCD inverter.
Æ
Replace the LCD cable or LCD inverter.
2. No picture is displayed on the screen.
Æ
Check the connection status of the LCD cable connector of the main board and the
connection between the LCD cable and LCD inverter.
Æ
Replace the LCD cable or LCD inverter.
Æ
Check if the memory module is out of order.
3. Cannot adjust the LCD screen brightness.
Æ
Check if the LCD inverter is out of order.
Æ
Check the BIOS version information or check if the adapter is appropriate.
4. The LCD blinks during use.
Replace the LCD cable and the LCD inverter and check if they are out of order.
Æ
Check if the adapter is the appropriate one.
Main System Related Symptom
5. Cannot turn the system on.
Æ
If the AC adapter is not connected, check the battery charge status. Even if the
battery is charged, if the remaining battery charge is too low, you may not be able to
boot up the system.
Æ
Check if the On Top Board or part of the On Top Board is out of order.
Æ
Check if the DC/DC Board is out of order.
Æ
Replace the Main Board.
6. The system is turned on, but booting fails or the power turns off immediately.
Æ
Since this may happen due to a short circuit within the system, immediately