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From: dennisf@marque.UUCP (flaherty)
Newsgroups: net.micro.cbm
Subject: Re: 1670 modem repair
Message-ID: <412@marque.UUCP>
Date: Tue, 22-Apr-86 12:47:48 EST
Article-I.D.: marque.412
Posted: Tue Apr 22 12:47:48 1986
Date-Received: Thu, 24-Apr-86 06:31:59 EST
References: <410@marque.UUCP> <123@cbmvax.cbmvax.cbm.UUCP>
Lines: 45

> 
> Your 1670 is working just fine.  The problem is that you are turning
> off your disk drive.  The disk and the modem share the same reset line,
> and when you turn your disk off, it pulls down the reset line on the
> modem.  Well, it doesn't pull it down all the way, and hence the modem
> gets upset - being half way between reset and not reset.
> 
> You have the following choices:
> 
> 1. Turn everything OFF when not in use.  The obvious choice.
> 
> 2. Keep everything ON when not in use.  This means the disk drive too,
> but I imagine that you want to keep the drive from overheating.
> 
> Therefore we offer choice 3:
> 
> 3. Before turning off your disk drive, unplug the serial connector,
> and then turn off the disk drive.  This way, your disk stays nice and
> cool and your modem doesn't get upset.
> 
> Personally I recommend choice 1.  I hope this helps.
> 
> 
> Jeff "Mr. Modem" Porter     Commodore Engineering   ihnp4!cbmvax!porter
> 
> PS: Thanks for the compliment on the 1670.

Jeff,
	Thanks a lot for answering!  Much more efficient than writing to 
Commodore Cust. Supp.  Actually I can't do choice #1 because the 1670
gets turned on when I turn the whole system on.  I load my vt52 emulator
from disk, so it has to come on with the modem.  But suggestion #3 should
work, and for once I can DO something.  And I know I don't have a defective
modem.  Now I can keep someone's phone ringing at 12:30 a.m. with a command
from a certain joystick on an extension cord by my bed.  You should see
how effective one ring is in getting others to turn down their stereos...
   "ooops... the phone's ringing... turn the volume down, quick..."
						Dennis Flaherty
						Marquette University
                                ihnp4!uwvax!uwmacc!uwmcsd1!marque!dennisf
					(note the correction ^)

		smart modems make hackers invulnerable at night...