Installation guide

Aftermarket LCD Upgrade Manual
10 P/N 400-283-301 Rev A
Figure 3 – Discharge Tools
Figure 1 – Brass Connector
Figure 2 – Braided Wire
Figure 4 – Discharging the
Anode
3 Safety Precautions
3.1 Discharging the CRT Tube
The monitor’s CRT (Cathode Ray Tube) must be discharged. Follow the steps below to
discharge the CRT.
CRT monitors use lethal high-voltage. Use caution when working around these
tubes (especially around ladders).
Read and understand all safety requirements when working on CRT monitors!
Do not work on this product alone. Make certain another capable person is
present to assist in the event of injury.
To avoid electric shock, disconnect the power cord.
CRT’s retain hazardous voltages for long periods of time, even after the power
has been removed. They may also build up a charge while disconnected.
Place one hand behind your back. Placing one hand behind your back helps
prevent current from passing through your heart (if you were to touch a high
voltage area). If you are not comfortable with this procedure, consider contacting
a local TV repair center.
The CRTs must be discharged by connecting a discharge
path between ground and the
anode. To do this, you will need an
insulated screwdriver and wire with
alligator clip(s). Connect the wire to
the shaft of the screwdriver with a
clip (Figure 3, top) or wrap the wire
(Figure 3, bottom). Attach the
alligator clip on the other end to
something on the CRT with a good
connection to the black conductive
coating on the rear of the tube (i.e. -
the brass connector (Figure 1) or the
braided wire (Figure 2)).
Now, slide the flat head end of the screwdriver under the
rubber cap and into the anode opening (Figure 4). You may or
may not hear an electric crackle. The tube has now been
discharged.