A follow up: Because I can't force the modem into EDL, I tried to verify some function with a volt meter. Test point T1500 is supposed to be connected to the modems VDD_EXT via a resistor. Thus there should be 1.8VDC on that test point after the modem powers up. That doesn't seem to ever happen. Without VDD_EXT at TP1500, there is no way to put the modem in EDL. So the next question is, Where's the VDD_EXT?
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Help! Where's the Modem?
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Help! Where's the Modem? - by glrsn - 11-16-2021, 05:03 PM
RE: Help! Where's the Modem? - by bcnaz - 11-16-2021, 09:38 PM
RE: Help! Where's the Modem? - by glrsn - 11-17-2021, 04:08 AM
RE: Help! Where's the Modem? - by Merc - 11-17-2021, 01:01 AM
RE: Help! Where's the Modem? - by glrsn - 11-17-2021, 05:08 AM
RE: Help! Where's the Modem? - by glrsn - 11-18-2021, 03:19 AM
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