Sony DHC-FL3 / GDM-C520 / GDM-C520K / HCD-FL3 Service Manual ▷ View online
— 10 —
GDM-C520/C520K
1-3. A1 BOARD (C BLOCK) REMOVAL
1-4. A1 BOARD REMOVAL
1
A1 board (C BLOCK)
CN315
CN318
GND
GND
1
Two screws
(+BVTT 4 x 8)
(+BVTT 4 x 8)
2
Video block assembly
3
Four screws
(+BVTP 3 x 8)
(+BVTP 3 x 8)
4
Video shield
5
Four screws (HEX)
6
Screw
(+BVTP 3 X 8)
(+BVTP 3 X 8)
7
Video case
8
A1 board
CN315
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GDM-C520/C520K
1-5. BEZEL ASSEMBLY AND H2 BOARD REMOVAL
2
1
Four tapping screws (5)
3
Bezel
4
Screw
(+BVTP 4 x 16)
(+BVTP 4 x 16)
4
Screw
(+BVTP 4 x 16)
(+BVTP 4 x 16)
5
Three screws
(+BVTP 3 x 10)
(+BVTP 3 x 10)
10
Two claws
8
Menu button
9
H2 board
7
Selector input
6
Control panel assembly
12
Magnetic
MIU-221D sensor
MIU-221D sensor
11
L1 blacket
CN1400
CN1500
CN1401
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.)
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.)
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GDM-C520/C520K
1-6. D BOARD REMOVAL
1
A1 board
(C block)
(C block)
2
Two screws
(+BVTT 4 x 8)
(+BVTT 4 x 8)
4
Two screws
(+BVTP 3 x 10)
(+BVTP 3 x 10)
D board
3
Video block assembly
5
Rear plate assembly
6
Five screws
(+BVTP 3 x 10)
(+BVTP 3 x 10)
CN315
CN602
CN601
CN1103
CN1601
CN1600
CN1003
CN605
CN701
Connector (4P)
Connector (4P)
CN501
GND
GND
8
Screw (+BVTP 3X10)
7
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GDM-C520/C520K
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
A1 board (C block)
3
Neck assembly
CN1
CN2
CN3
CN2
GND
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