Acer S2W 3300U Service Manual - Page 38

Chapter 6 Troubleshooting 6.0 Error Code Identification from MiraScan When the LED flashes : 0XFFFF0021 --- DATA RAM error 0XFFFF0024 --- Line Motor/Home Sensor error 0XFFFF0026 --- DC Offset error 0XFFFF0027 --- Lamp/CCD GAIN error 0XFFFF002A --- Scan Module Locked OR Line Motor Error 6.1 No Function after Power On: Power Cord/Power Switch/Power Fuse/Power Supply/Power Part X1 --- XTAL 24MHZ U3 --- ASIC(AP7107U) 6.2 Cannot Link with Host Computer: U3 --- ASIC(AP7107u) U4 --- DATA SRAM U7 --- CODE SRAM J8 --- USB connector 6.3 When MicraScan show 0XFFFF0021 : DATA RAM error U4 --- DATA SRAM U3 --- ASIC (AP7107U)