Sony GDM-F520 Service Manual ▷ View online
— 10 —
GDM-F520
Two screws
(+BVTT 4 x 6)
2
Video block assembly
11
Screw (+BVTT 4 x 8)
Five screws
(+BVTT 3 x 8)
USB case
15
US board
12
USB block assembly
3
Four screws
(+BVTP 3 x 8)
Video shield
Two screws (HEX)
Screw
(+BVTP 3 X 8)
7
Video case
9
Terminal board
assembly
10
A2 board
CN315
CN313
CN2601
1
4
5
6
Two screws
(+BVTT 3 X 8)
8
13
14
1-3. A2 BOARD (C BLOCK) REMOVAL
1
A2 board (C block)
CN318
CN315
GND
1-4. A2 BOARD & US BOARD REMOVAL
— 11 —
GDM-F520
3
Bezel
7
Input selector
9
H2 board
5
Three screws
(+BVTP 3 x 10)
4
Screw (+BVTP 4 x 16)
10
Lifting up two claws
in the direction of arrow.
4
Screw
(+BVTP 4 x 16)
11
L1 bracket
12
Magnetic MIU-221D
sensor
2
Four tapping screws (5)
8
Menu button
6
Control panel assembly
CN1500
CN1401
CN1400
1
Picture tube shield
Before removing the bezel assembly, secure
the picture tube by attaching two screws to
the picture tube shield at the positions shown
with an arrow (diagonal two places) to prevent
the picture tube from falling.
(Use the screws +BVTT 4 x 8 that fix EMI shield.)
1-5. BEZEL ASSEMBLY AND H2 BOARD REMOVAL
— 12 —
GDM-F520
A2 board
(C block)
Two screws
(+BVTT 4 x 6)
4
Two screws
(+BVTP 3 x 10)
3
Video block assembly
Rear plate assembly
6
Five screws
(+BVTP 3 x 10)
CN315
CN1103
CN1600
CN1601
CN1003
CN605
CN701
CN501
GND
CN602
CN601
CN318
GND
Connector (4P)
Connector (4P)
1
5
2
Screw (+BVTP 3 x 10)
4
D board
7
1-6. D BOARD REMOVAL
— 13 —
GDM-F520
a
b
Anode Button
c
ANODE CAP REMOVAL
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 fitting 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 firmly 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 .
1-7. PICTURE TUBE REMOVAL
4
Picture tube
1
Anode cap
2
A2 board
(C block)
3
Neck assembly
CN3
CN7
CN2
CN1
GND
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