Picture Tube Removal; Anode Cap Removal - Sony TRINITRON HMD-A240 Service Manual

1-4. PICTURE TUBE REMOVAL

1 Place the unit face down on a cushion to avoid
scratching.
Remove the anode cap.
2
Remove (4) screws (Screw (5) Tapping) from
3
the CRT.
Remove the A board.
4
Remove the neck assembly.
5
6
Remove the deß ection yoke.
7
Remove (2) screws (BVTP 4 x 16) from the
base assembly and slide out to remove.
8
Remove the demagnetization coil.
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
a
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. To avoid damaging the anode cap, do not squeeze the rubber covering too
hard. A material Þ 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.

ANODE CAP REMOVAL

b
Use your thumb to pull the rubber
cap Þ rmly in the direction indicated
by arrow b .
— 9 —
c
Anode Button
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 .
HMD-A240