Avantra 44 takeup motor problem

[pam_add]

we are having recently very strange problem, if any one can help to analyze it.
the take up align motor don't work. when i try to test it by AvDiag its work and rotate, but the AvDiag report Failed..
could the Dec board have problem or other board, or where could be the problem?

[VladCanada]

If you can stop it with a low "finger pressure" - it's failed.

[pam_add]

no it's require hard pressure to stop it

[VladCanada]

Try to swap up two SDM boards at your Avantra and see what will happen.

[pam_add]

i'm think i made huge mistake
my problem is the film jam after knife but i diagnose wrong because when i turned takeup motor with my hand the film not jam .
and after that when i test this motor with avdiag and see it's failed i'm be sure this the problem but
now i'm read service manual , i see this line for take up motor test
Take-up cassette must be in system for this test to pass.
i'm confused please help

[VladCanada]

or you have to move your pointing finger in front of core position sensor a few times

[pam_add]

Dear Vlad can you tel me how much the volt must be for this motor when it will work. i think it should be about 12 volt, but when i am measure it's about 6 volt.
i try and change the power supply but the same happen.

[VladCanada]

TU motor is PITTMAN 24V DC motor, but actual value depends on the parameters like a current and a speed.
Remove one wire off TU motor and measure the voldage on the wires, not at motor's pins.
If you will see about 20V DC without motor and 6V with it - think!

Swap SDMs and, if your still have a problem - change the motor.

[pam_add]

i swap the unload cassette b motor with take up motor , but still have the same problem i solve the case by change take up wind current value from 75 to 105 .
in the end of the day when i try to unload cassette b it's not work too .
as i see i need new motor for cassette B , but why takeup motor need more current to run ??

[VladCanada]

1. 'cause motors are different (check the reduction rate on motor's labels)
2. Carbon brushes worn out