TRM900@PSUVM.BITNET (Tony R. Marasco) (02/11/89)
I was given a 1670 modem for a C=64 the other day, which does not work. It accepts Hayes commands fine - the problem is it won't pick up the telephone. In other words, if I tell it to Answer, it will send the proper tone to the speaker, but it doesn't send the tone to the phone line. I checked simple circuits, and they seem o.k. Any suggestions? Or should I save it for parts for my working 1670? ------- +-------------------------------------------------------------------------+ | Tony Marasco | UUCP: psuvax1!psuvm!trm900 | | Penn State University | BITNET: trm900@psuvm.BITNET | | Schuylkill Haven Highway | - or - | | Schuylkill Haven, PA 17976 | trm900%psuvm.psu.edu@CUNYVM.CUNY.EDU | | "Questions are a burden for others. Answers are a prison for oneself." | | -- The Prisoner | +-------------------------------------------------------------------------+
izot@f171.n221.z1.FIDONET.ORG (Geoffrey Welsh) (02/12/89)
> From: TRM900@PSUVM.BITNET (Tony R. Marasco) > Message-ID: <71137TRM900@PSUVM> > I was given a 1670 modem for a C=64 the other day, which does not work. > It accepts Hayes commands fine - the problem is it won't pick up the > telephone. Sounds like the line relay or the line interface transformer are on the fritz. I'm not a qualified analog serviceman, so I can't tell you offhand what measurements to take (and what readings to expect) but, once you find which part is fried, it should only take a couple bucks of parts to restore the thing to order. =========================================================================== Internet: Geoffrey.Welsh@f171.n221.z1.fidonet.org | 66 Mooregate Crescent Usenet: watmath!isishq!izot | Suite 602 FidoNet: Geoffrey Welsh on 1:221/171 | Kitchener, Ontario PunterNet: 7/Geoffrey Welsh | N2M 5E6 CANADA BBS: (519) 742-8939 24h 7d 300/1200/2400bps | (519) 741-9553 =========================================================================== | "I don't need a disclaimer. No one pays any attention to what I say." | =========================================================================== -- Geoffrey Welsh - via FidoNet node 1:221/162 UUCP: ...!watmath!isishq!171!izot Internet: izot@f171.n221.z1.FIDONET.ORG