KV-21FA240 - Sony TV Service Manual (repair manual). Page 10

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KV-21FA240
KV-21FA240 
11
1.  Discharge the anode of the CRT and remove 
the anode cap.
2.  Unplug all interconnecting leads from the 
defl ection yoke, neck assembly, degaussing 
coils and CRT grounding strap.
3.  Remove the C Board from the CRT.
4.   Remove the chassis assembly.
5.  Loosen the neck assembly fi xing screw and 
remove.
6. Loosen 
the 
defl ection yoke fi xing screw and 
remove.
7.  Place the set with the CRT face down on 
a cushion and remove the degaussing coil 
holders.
8.  Remove the degaussing coils.
9.  Remove the CRT grounding strap and spring 
tension devices.
10. Unscrew the four CRT fi xing screws [located on 
each CRT corner] and remove the CRT  [Take 
care not to handle the CRT by the neck].
1-4.  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.
 
ANODE CAP REMOVAL PROCEDURE
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 coated earth ground strap of CRT. 
NOTE:  After removing the anode cap, 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
HOW TO HANDLE AN ANODE CAP
1.  Do not use sharp objects which may cause damage to the surface of the 
anode cap. 
2.  To avoid damaging the anode cap, do not squeeze the rubber covering too 
hard. A material fi tting called a shatter-hook terminal 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.
Turn up one side of the rubber cap in 
the direction indicated by arrow  a  .
Use your thumb to pull the rubber
cap fi rmly in the direction indicated
by arrow  b  .
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  .
a
b
Anode Button
c
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