Samsung NP900X4D Service Manual

Also see for NP900X4D: User manual User guide Guía del usuario User manual

4. Trouble shootingHDMI port does not work normally.1System manager confirmation .(Video / Sound / Controller confirmation)→ HDMI driver Re-install.2Check the Display Manager work normally.→ Display Manager program Re-install.3 Check the Control panel .→ Check HDMI section enable.4 Replace Main Board.AP (WLAN) or B / T devices can not connect.1If the driver loaded correctly, check in Device Manager. When loaded, AP signal is strongconfirmation.Make sure that the BT unit power. OrCheck the connection to another host.2 Wireless antenna connection or check the status of damage. Antenna change3 Wireless Lan module connection or check the status of damage4 Check wlan module connector damage5Main-board changeChange Wireless LAN moduleThe system temperature is too high.1 CheckthesystembyusingSAFC(SamsungAdvancedFanControl)program. * Tool Program reference2 Check the connection status of Heat sink→ Screw 5EA3 Check the connection status of FANScrew 4EA (R/L each 2EA)4 Replace FAN * Check if it is out of order.5 Replace RHE * Check if it is bent.6 Replace Main Board. * Check if it is out of order.4-13 Copyright© 1995-2012 SAMSUNG. All rights reserved.