Ocean Optics LS-450 - Manual (Page 28)

A: Maintenance
14 009-00000-450-02-201105
3. Use the 3/32 Allen wrench to remove the two screws on the bottom right and left corners of the
rear end of the LS-450. This allows the LS-450 to be separated into two pieces. Place these
screws in a safe area.
4. Pull the two halves apart gently until they are approximately 1.5” apart. This should expose two
thin black wires that are holding the unit together. These wires connect to a small socket on the
LED (located in the front half of the unit).
5. Slide the LED barrel out of the front portion of the LS-450. If the unit does not slide out easily,
you will need to further loosen the setscrew (see Step 2).
6. Remove the blue filter, seated directly in front of the blue LED. Place the filter to the side. You
will only need this filter when using the blue LED.
7. Unplug the blue LED from the connection socket. Remove the socket by gently pulling the
insulated black wire back from the rear of the barrel. The socket should unplug easily
Note
If you want to reinsert the default blue LED in the future, identify the original LED
orientation with a small amount of liquid paper.
8. Seat the socket of the replacement LED firmly into the rear of the barrel (where the anode and
cathode lead pins are located). The orientation of the LED should be marked with a white dot on
the side of the barrel (cathode side) OR by differing pin lengths (the short pin is the cathode side
of the LED).
9. Place the new LED barrel back into the optical housing of the LS-450 and tighten the setscrew on
the bottom (loosened in Step 2) so that the barrel is firmly set in the housing.
10. Reattach the two sides of the LS-450 together and replace the two screws you removed in Step 3.
Ensure that the black socket wires do not stray out of the LS-450 enclosure when you reconnect
the unit.
11. Plug the unit into the 12 V power supply and turn the unit on. If the new LED does not illuminate
when the switch is in the On position, consult the troubleshooting tips at the end of this section.
Changing a Bulb in the R-LS-450
► Procedure
To change the bulb in the R-LS-450, follow the steps below:
1. Ensure that the unit is off and that power is disconnected from the R-LS-450.