Acer TravelMate P643-MG Acer TravelMate P643-M and P643-V Notebook Service Gui - Page 108

7. Remove the screw securing the mainboard. Figure 1-53. Mainboard Screw Table 3-14. Screw Step Mainboard Disassembly Screw M2 × L3 Quantity 1 Screw Type NOTE: NOTE: A circuit board that is >10 cm2 has been highlighted with a yellow rectangle in Figure 1-54. Follow the local regulations for disposing this type of circuit board. 8. Lift the mainboard at an angle and gently turn it on its side (1), and then disconnect the DC input cable (2) from the mainboard. UMA Model Discrete Model Figure 1-54. Mainboard and DC Input Cable NOTE: NOTE: The RTC battery is highlighted with a yellow circle in Figure 1-54. Detach the RTC battery and follow the local regulations for disposing it. 3-38 Machine Maintenance