13
Troubleshooting (cont.)
Q. I press the keys on the keypad, and there is no sound or response from
the controller.
A. Check the connection of the keypad to the controller. This is inside
the top panel. Unplug the power cord. Remove the two screws in
between the clamp/linkage that hold down the top panel, and carefully
lift the panel up and look inside at the digital controller. The keypad
connector passes in through the top panel. It should wind around the
first circuit board and be seated fully into the connector. Check the
black keypad connector that plugs into the circuit board to see if it has
pulled apart. Also check the area where the keypad connects to the
front membrane to see if the leads have been damaged. The membrane
keypad may need to be replaced.
Q. The press will not activate.
A. Check the air connection to the press. Make sure the compressor
supplying the air is on, and no relief valves have opened on the
compressor. Check the air gauge, it should be set to a reading of 20-
80 psi. Check to make sure the limit micro-switch in the back of the
press is closing when the head is swung over. If the head is not swung
all the way over the table, and the rear limit micro-switch is not being
closed, the press will not activate. If all of these check points have
been tried, and the digital control is counting down, but the press is
not pressing, contact Geo Knight technical support. If the Digital
Controller is not counting down when attempting to activate, one or
both of the black activation switches needs replacement.
Q. The press has shut off, and will not come back on after checking the
power cord, on/off switch, etc.
A. Check the fuse. In the back panel of the control box, the power cord
socket has a built-in fuse-holder. Unplug the power cord, and gently
pry out the fuse-holder. If the fuse is burnt out or there is no continuity,
replace it. If the fuse is fine, check the black and white wire connections
from the power socket to the on/off switch, and from the on/off switch
to the controller inside the head.
Q. I pressed a transfer upside down. The inks and transfer material have
burned onto the heat platen.
A. Cool the press down. Using a nonabrasive detergent or cleaner, thoroughly
scrub the heat platen surface. Do not use an abrasive scrubber, or a pad
that will scratch the Teflon coating of the platen. If you are still unable to
remove the transfer material, obtain teflon heater block cleaner from the
contact information located at the end of this manual.
