Darex XPS-16 Operating Instructions - Manual (Page 68)

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-Turn the machine power off.
- Open the Electrical Panel and disconnect the
solenoid cable (connector located in lower right
corner of Power Supply with a yellow and brown
conductor). Check the electrical resistance of the
solenoid by probing on the side of the connector.
The resistance should be about 33 +/-3 ohms. If
the resistance is not correct, then remove the
black cover on the Chuck Swing Assembly and re-
check the resistance at the solenoid connector. If
the resistance is still incorrect then replace the
solenoid. If the resistance is correct then there is
a wiring/connector failure.
- If the solenoid needs replacement, the fuse and
driver IC will also need to be replaced. If the so-
lenoid and wiring are OK, then the most common
fix is a fuse/IC replacement. Location of the fuse
and driver IC are on the lower right corner of the
Power Supply.
-Replacement of the solenoid is pretty straightfor-
ward. It is held in place by 2 bolts accessed from
the rear of the Chuck Swing Assembly. The 2 pin
connector needs to be separated on the front side
and the solenoid plunger needs to be depressed
before the assembly can be removed. Installation
is in the reverse order of the solenoid removal.
-To replace the fuse and IC follow these steps
(Use an ESD grounding device to avoid damaging
components). Remove the small yellow compo-
nent from its connector. Test the electrical resis-
tance of the fuse. The resistance should be about
1 ohm. If the fuse is open circuit, then it needs to
be replaced with a new one. Remove the IC by
inserting a small screwdriver between the device
and its socket. Carefully replace with a new IC
chip as shown in the photographs. The correct
orientation is with the printing upside down.
Make sure all of the leads are inside of the socket.
Next, insert a new or tested fuse into its connec-
tor.
- Re-connect the solenoid cable. Power-up the
unit to check operation. Press the “Check” icon
and the solenoid should retract with a “snapping”
sound.
All axes should go to their home positions and the
solenoid should then release with a “click”.
- Replace the Chuck Swing Assembly cover and
close the Electrical Panel (be sure not to pinch any
wire while securing cover or closing the panel).
Note: the solenoid may need some minor adjust-
ment. It has a little free-play in its mounting and
can be positioned a little clockwise or counter-
clockwise. With the power off and the Chuck
Swing Assembly cover removed, loosen the
mounting screws a little and turn chuck knob a
little each direction to find the center of its free-
play. Carefully tighten the mounting screws while
the chuck knob is in this position. Replace cover.
Solenoid Troubleshooting
Trouble Shooting Section