AGP TP2000 - Component Checking Procedures; Checking the Magnet Coils; Checking the Rectifier Circuits

14
CHECKING THE MAGNET (qualified technicians only)
If the magnet is not working well, it must be checked. Separate the wires of each indiviual coil and test the
resistance of each coil separately. (note that 110V models are wired in parallel and 230V models are wired in
series) The resistance of the coils of dierent sizes of magnets varies, but it should be in the region of hundreds
of ohms. Most importantly, both coils must have very nearly the same resistance. If one of the coils has zero
resistance, it means that it is shorted. If one of the coils has innite resistance, it means that the circuit is
broken. If either coil has a problem, the magnet must be replaced. A faulty magnet may also cause damage to
the rectier. Also check the rectier when replacing a faulty magnet. (see below)
CHECKING THE RECTIFIER (Qualified technicians only)
The rectier takes the AC household current and converts it to DC to power the magnet. If it fails, the magnet
coils will not receive power.
Disconnect the rectier and test the resistance of both circuits of the rectier between the AC and the DC sides.
Note that polarity matters, so you can only take a reading if test probes are oriented correctly. Each side will
be the opposite of the other. Both circuits should have very nearly the same resistance reading. If one of the
circuits has zero resistance, it means that it is shorted. If one of the circuits has innite resistance, it means that
the circuit is broken.
If the replacement of the power supply cord is necessary, this has to be done by the manufacturer or
their agent in order to avoid a safety hazard.
WARNING: All repairs must be entrusted to an authorized service center. Incorrectly performed repairs
could lead to injury or death.