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DELL E173FP Service Manual
38
11. ISP (In System Program) User Manual
11.1. Connect ISP Writer preparation action：
Connect RXD and TXD of PC to RXD (P3.0) and TXD (P3.1) of CPU through RS-232.
a. There are two ways to entering Reboot Mode. The settings for Reboot Mode is as follow：
☆Both P2.6、P2.7 are LOW and RESET pin is HI.
☆P4.3 is LOW and RESET pin is HI .
11.2. To Use ISP WRITER
Press the “–“ key at front bezel and plug the AC power cord in, then the MCU enter ISP mode;
a. You will enter the window as follow after executing the ispwriter.exe file.