Picture Tube Removal - Dell P780 - 17" CRT Display Service Manual

Service manual
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2-4. PICTURE TUBE REMOVAL

WARNING:
BEFORE REMOVING
THE ANODE CAP
High voltage remains in the CRT even
after the power is disconnected. To
avoid electric shock, discharge CRT
before attempting to remove the anode
cap. Short between anode and CRT
coated earth ground strap.
Coated Earth
Ground Strap
WARNING: High voltage remains in the CRT even after the power is disconnected. To avoid electric shock, discharge CRT
before attempting to remove the anode cap. Short between anode and CRT coated earth ground strap.
NOTE:
After removing the anode, short circuit the anode of the picture tube and the anode cap to either the metal
chassis, CRT shield, or carbon painted on the CRT.
REMOVAL PROCEDURES
a
1 Turn up one side of the rubber cap in
the direction indicated by arrow a .
HOW TO HANDLE AN ANODE-CAP
1 Do not use sharp objects which may cause damage to the
surface of the anode cap.
2 Do not squeeze the rubber covering too hard to avoid damag-
ing the anode cap. A material fitting called a shatter-hook ter-
minal is built into the rubber.
3 Do not force turn the foot of the rubber cover. This may cause
the shatter-hook terminal to protrude and damage the rubber.
Demagnetization coil
8
Tension spring
7
A board
6
Neck assy
5
Deflection yoke
4
Four screws
3
(Tapping screw 5)
Picture tube shield
2
Anode cap
1
ANODE CAP REMOVAL
b
2 Use your thumb to pull the rubber
cap firmly in the direction indicated
by arrow b .
— 11 —
Two screws
9
(BVTP 4 x 16)
Stand
10
ass'y
(D board)
Cushion
c
Anode Button
3 When one side of the rubber cap
separates from the anode button,
the anode cap can be removed by
turning the rubber cap and pulling
it in the direction of arrow c .
P780

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