Picture Tube Removal - Sony TRINITRON KV-21FS140 Service Manual

KV-21FS140
RM-YA005

1-6. PICTURE TUBE REMOVAL

Note:
• Please make sure the TV set is not in standing position before removing necessary CRT support located on bottom right
and left.
1) Remove the Rear Cover.
2) Unplug all interconnecting leads from the Deflection Yoke, Neck Assy, Degaussing Coils and CRT grounding strap. Remove
Chassis Assy.
3) Place the TV set with the CRT face down on a cushion (jig).
qa Earth Coating Assy
• REMOVAL OF ANODE-CAP
Note:
• After removing the anode, short circuit the anode of the picture tube and the anode cap to the metal chassis, CRT shield or
carbon paint on the CRT.
•
REMOVING PROCEDURES
A
A
1 Turn up one side of the rubber cap in the direction
indicated by the arrow a.
2 Using a thumb pull up the rubber cap firmly in the direction
indicated by the arrow b.
qd Screw (5), Tapping (x4)
0 Degaussing Coil
9 Holder, DGC
Removal (x2)
qs Spring Tension Removal (x2)
B
B
4 Anode Cap Removal
qf Supports, CRT
Removal (x2)
7 Loosen the Deflection Yoke
fixing screw and remove
3 When one side of the rubber cap is separated from the
anode button, the anode-cap can be removed by turning
up the rubber cap and pulling it up in the direction of the
arrow c.
•
HOW TO HANDLE AN ANODE-CAP
1 Do not damage the surface of anode-caps with sharp
shaped objects.
2 Do not press the rubber too hard so as not to damage
the inside of anode-cap.
A metal fitting called the shatter-hook terminal is built
into the rubber.
3 Do not turn the foot of rubber over too hard.
The shatter-hook terminal will stick out or damage the
rubber.
– 6 –
8 Band, DGC Removal
6 Loosen the Neck Assembly
fixing screw and removal
5 C Board Removal
C
Anode Button