Acer S2W 3300U Service Manual - Page 50

(5) Cleaning the mirrors Through the foregoing process, the carriage only includes three mirrors and lensbox. At this time, it is not necessary to disassemble the mirrors to clean them. You can use soft cloth or cotton to clean their reflective plane. 7.5. Case Assy Low Section This section mainly includes PCB main board, bracket motor and wires. You can get these parts by the following steps: (1) Remove the four screws in Fig.7-11. (2) Disconnect the connectors between PCB main board and wires in. (3) Remove all the screws in main board, and you can get the main board apart from the main board cover. Figure7-11