4-37
Discharging the CRT
WARNING:
Dangerous voltages may be present on the CRT anode. The anode may retain a
very dangerous voltage even after the monitor has been off for days. Accidental
contact with the anode lead or anode button (the small hole in the CRT glass
where the anode lead is attached) prior to discharge may result in a potentially
lethal shock. Follow the procedure below carefully to avoid injury.
The anode lead of the monitor feeds high voltage from the flyback transformer
to the anode button on the CRT. The anode lead is usually red in color, and the
actual connection to the anode button is usually covered by a large rubber
suction cup-like boot. In most monitors, the button is located on the tapered
face, or bell of the CRT glass near the top of the monitor. See Figure 4.1 on
page 4-33.
It may be necessary to remove some sheet metal to gain access to the anode
lead—be very careful to do this without making contact to the anode lead itself.
Carefully discharge the CRT using the following procedure:
• Connect a clip lead or a heavy-gauge wire to chassis ground of the monitor
(or if the CRT is free-standing, the mounting ears or the spring-tensioned
ground strap).
• Connect the other end of the clip lead or wire to the stem of a flat blade
screwdriver that has an insulated handle.
• Hold the screwdriver by the insulated handle only. Insert the blade of the
screwdriver under the rubber boot and make contact with the anode lead at
the button. A distinct “snap” may or may not be heard as it discharges,
depending on the amount of charge present on the anode.
• Disconnect the anode lead from the button by unhooking the spring wire
clips. Note the location of the anode for proper CRT orientation during
reassembly.
WARNING:
The CRT will regain a charge over time, even after it has been discharged. To avoid
a dangerous electric shock, always discharge the CRT just before handling it, and
treat it with respect thereafter.
Содержание AccuTouch 821615-000
Страница 3: ...4...
Страница 5: ...12...
Страница 9: ...8...
Страница 15: ...1 16 E l o E n t u i t i v e T o u c h m o n i t o r...
Страница 55: ...4 60 E l o E n t u i t i v e T o u c h m o n i t o r...
Страница 75: ...A 80 I n t e l l i T o u c h S e c u r e T o u c h G u i d e...
Страница 78: ...B 83 2210 Serial Controller Figure B 2 E271 2210 Serial Controller...
Страница 83: ...B 88 I n t e l l i T o u c h S e c u r e T o u c h G u i d e...
Страница 92: ...C 97...
Страница 93: ...C 98 I n t e l l i T o u c h S e c u r e T o u c h G u i d e...
