Re: transport erratic - machine cuts out on PLAY/REW/REC
A machine reset (unplugging- (x1 wk)) temporarily seemed to fix; some probls returned after 24 hrs.
Technician series text suggest probl may be Tape Load reel (gears, worn belts), tape slack sensor,
mode switch, etc. In other words, machine needs overhaul due to lack of maintenance. [ But where to get necess parts???!! ]
Audio & picture still perform well. Suspect snow dropouts due to tape age (at least late 1980s) & oxides.
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This unit uses a Sankyo type transport and after all these years and functions the feedback contacts may have become tarnished or the worm gear motor may have developed a dead spot. If you take the cover off the unit the first thing is to get a burnishing tool and work on the copper leaf contacts to see if that is it. This can be done with the power off. Then test the unit to see if that worm gear cam system will rotate. If not then the next course of action is to replace the cam motor as it has a dead spot on the commutator. You can confirm this condition by taking a small ***** driver and turning the worm gear quarter turn. Then try some play functions. If it works that is the problem. You will need to get a new motor and replace this- it is very involved and not an easy part to find and so a Technical person is better off doing this. If it does not move then it could be that the drive circuit is having trouble in either the supply or the drive transistors.
You will need to measure voltage in each direction it is suppose to turn. If it does not then on to the circuit board for the drive transistors.
PROBABLY BAD PHONE LINE, CAN TRY SOME OF THE FOLLOWING
SLOW DOWN THE RX TO 1700
TURN OFF ECM
INSTALL DSL FILTER EVEN IF ITS NOT A DSL LINE
MAKE SURE THE PHONE COPANY KNOWS ITS A FAX LINE
IF ITS VOIP IT MAY NEVER WORK WELL
RESEAT ALL CONNECTORS IN FAX 3900
TRY SETTING TO MMR
MAY ALSO BE PROBLEM WITH THE SENDING FAX MACHINEOR, THERE PHONE LINE
Is the tape actually moving when you initiate transport commands? Most machines are smart enough to know something isn't moving when it should be. That it fails in BOTH FF and REW suggests the reels aren't moving to take up slack. Cheap machines use glorified rubber bands as drive belts for the reels. Without specifics re: make/model we can't get too precise with an answer. I'd have a pro look at it.
This icon appears due to the app adv comm manager app that came in free with the device. go to that app and ensure that you keep no filter / off as your chosen setting. The icon will disappear.
read the entire guide on how to use the adv comm manager.
try firmly banging the cassette onto a table top(with reels flat) a few times, then ff right through and rew a couple of times. this will layer the tape more evenly and hopefully allow the mechanism to play it. the takeup reel or autostop mechanism may be failing if the deck does not have enough torque to carry the tape and may require belts replaced or dried grease removed in the transport.