Sony KV-G21PD1 Service Manual ▷ View online
– 9 –
KV
-G21PD1
-G21PD1
RM-883
Additional Information
12
Troubleshooting
Additional Information
If you have any problems, read this manual again and
check the countermeasure for each of the symptoms
listed below.
If the problem persists, contact your nearest authorized
service center or dealer.
check the countermeasure for each of the symptoms
listed below.
If the problem persists, contact your nearest authorized
service center or dealer.
Snowy picture
Noisy sound
Noisy sound
/ Check the antenna.
/ Check the antenna connection on the TV
/ Check the antenna connection on the TV
and on the wall.
Dotted lines or stripes
/ This may be caused by local interference
(e.g. cars, neon signs and hair dryers). Adjust
the antenna for minimum interference.
the antenna for minimum interference.
Double images or “ghosts”
/ This may be caused by reflections from
nearby mountains or buildings. A highly
directional antenna may improve the picture.
directional antenna may improve the picture.
No color
/ Adjust the COLOR level in the on-screen
display.
/ Check the COLOR SYSTEM setting.
No picture
No sound
No sound
/Press POWER.
/Check the antenna connection.
/Check the VCR connections.
/Check the power cord connection.
/Check the standby mode.
/Check the antenna connection.
/Check the VCR connections.
/Check the power cord connection.
/Check the standby mode.
Good picture
No sound
No sound
/Press VOLUME +.
/Press MUTING.
/Press MUTING.
TV cabinet creaks
/Even if the picture or the sound is normal,
changes in the room temperature
sometimes make the TV cabinet expand or
contract, making a noise. This does not
indicate a malfunction.
sometimes make the TV cabinet expand or
contract, making a noise. This does not
indicate a malfunction.
Note on the remote commander
•
The supplied remote commander is used on several models of
the TV. If you do not find instructions for some controls that
are on the remote commander, that means your TV does not
employ the features of those controls, e.g. TEXT.
the TV. If you do not find instructions for some controls that
are on the remote commander, that means your TV does not
employ the features of those controls, e.g. TEXT.
Note on the TV SYSTEM button
•
The TV SYSTEM button is not used on your TV.
Notes
•
When you switch on the TV, you may hear the “boon” sound
that is caused by the demagnetization of the TV. This does not
indicate a malfunction.
that is caused by the demagnetization of the TV. This does not
indicate a malfunction.
•
The picture color may become abnormal if you change the
direction of your TV. To obtain the normal picture color, press
POWER on the TV to switch off the TV for five minutes and
then switch it on again.
direction of your TV. To obtain the normal picture color, press
POWER on the TV to switch off the TV for five minutes and
then switch it on again.
WARNING
Do not install the appliance in a confined space, such as
a bookcase or built-in cabinet.
Do not install the appliance in a confined space, such as
a bookcase or built-in cabinet.
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KV
-G21PD1
-G21PD1
RM-883
2-1. REAR COVER REMOVAL
2-2. A BOARD REMOVAL
2-3. SERVICE POSITION
SECTION 2
DISASSEMBLY
2 Two screws
(BVTP 4
×
16)
3
One screw
(BVTP 3
×
16)
1 Two screws
(BVTP 4
×
16)
Lever
Lever
A board
A board
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KV
-G21PD1
-G21PD1
RM-883
2-4. REPLACEMENT OF PARTS
For replacement of the Multi Button, Light Guide and Power Button, cut the welded portions
from them, exchange with the new parts, and fix them with screws (+BVTP) respectively.
from them, exchange with the new parts, and fix them with screws (+BVTP) respectively.
2-4-1. REPLACEMENT OF MULTI BUTTON
2-5. DEMAGNETIZATION COIL REMOVAL
2-4-2. REPLACEMENT OF LIGHT GUIDE AND POWER BUTTON
Two screws
(BVTP 3
(BVTP 3
×
12)
Cut
Light guide
Power button
Two screws
(BVTP 3
(BVTP 3
×
12)
1 Demagnetization coil
2
Tension spring
Picture tube
– 12 –
KV
-G21PD1
-G21PD1
RM-883
2-6. PICTURE TUBE REMOVAL
•
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.
CRT.
•
REMOVING PROCEDURES
1
Turn up one side of the rubber cap in the direction indicated by the arrow
a
.
2
Using a thumb press down then pull up the rubber cap firmly in the direction
indicated by the arrow
indicated by the arrow
b
.
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
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-caps
A metal fitting called the shatter-hook terminal is built into the rubber.
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.
The shatter-hook terminal will stick out or damage the rubber.
2
A board
3
C board
4
Deflection yoke
Cushion
5
Four screws
(Tapping screws)
1
Anode cap
a
a
b
b
c
Anode button
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