1139300 Shadow 8 User Manual
4-8 Troubleshooting
To make sure that misalignment is the cause of a Machine Run/Stop LED indicator going red,
place both units on a bench so that they are aligned and the Machine Run/Stop LED is lit
green. Move one unit slowly away from the other, keeping the beams aligned. If the Machine
Run/Stop LED comes on red as you move the heads apart, the problem may be a weak
phototransistor or LED. Contact Wintriss Tech. Support immediately to discuss return of the
unit.
When a phototransistor becomes weak, it can detect a light beam at close range but not at a
distance. If an LED becomes weak, it cannot generate enough light to be detected by its
corresponding phototransistor.
Checking and Replacing the AC Power Fuse in
Optional Shadow 8 Control Box
Whenever Shadow 8 loses power, first check the AC power fuse, F1, on the optional Shadow
8 control Main board (see Figure 2-20, page 2-32). F1 is a time-lag fuse rated at 1.25 A @
250 Vac.
1. Turn off power to Shadow 8.
2. Open the door of the control by turning the locking clasp.
3. Locate fuse F1 on the Main board to the left of the AC power connections.
4. Remove the fuse and test with an ohmmeter. Put the ohmmeter leads on each side of the
fuse. No resistance (0 ohms) means the fuse is good.
5. If the fuse is bad, insert a new fuse into the Main board.
6. Close the door of the control and secure with the locking clasp.
7. Power up Shadow 8.
GUARD AGAINST ELECTRIC SHOCK HAZARD
• Ensure that the power source is off before checking or replacing fuses.
• Disconnect power from the machinery it is connected to before making any wiring connections.
This includes disconnecting power to the machine control and motor.
• Ensure that all procedures are performed by qualified personnel.
Failure to comply with these instructions could result in death or serious injury.
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