PG-M25XE (serv.man38). Intermittent start-up shut down (locks up) - Sharp Projector Technical Bulletin (repair manual). Page 27

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LV064
Sharp Electronics (UK) Ltd., Technical Services Group
(4) The input box appears in the dialog box. Enter the COM port number you wrote
down in the previous step. And then click “OK”.
(5)  It takes about 40 minutes to transfer data (It varies depending on the PC
performance). The progress of data transfer is displayed in the dialog box and
the LAMP indicator blinks in green during this period. After transferring data, it
takes about one more minutes to finally update the firmware. Wait until the
update is completely finished.
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