Acer PD525 PD525 Service Guide - Page 51

Main Procedure Power Troubleshooting A. Is LED Indicator OK? - Check the Power cord and AC power outlet. - Check the Keypad cable has broken or not. - Check if all the wires are well connected inside. - Check the Ballast. - Check the Main board. - Check the Keypad board. B. Is Fan Working After Press Power/Standby Button? - Check the Keypad cable has broken or not. - Check if fan wire is well connected. - Check the Thermal board. - Check the Main board. - Check the Fan. C. Is Lamp Lit? - Check the Lamp cover assembly OK or not. - Check thay have the sound of Lamp ignitor output from Unit or not. - Check the Cable of Limit switch. - Check the DMD board. - Check the Lamp module. - Check the Ballast. Chapter 4 46