DOWNLOAD Sony KV-XF21M80 Service Manual ↓ Size: 1.26 MB | Pages: 46 in PDF or view online for FREE

Model
KV-XF21M80
Pages
46
Size
1.26 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kv-xf21m80.pdf
Date

Sony KV-XF21M80 Service Manual ▷ View online

– 17 –
KV
-XF21M80
RM-952
21
Additional Information
Possible cause
Symptom
Solutions
• Press ¸ + to increase the volume level.
• Press ¤ to cancel the muting.
• Do not use a hair dryer or other
equipment near the TV.
• Adjust the antenna direction for
minimum interference. Contact a Sony
dealer for advice.
• Use a highly directional antenna.
• Use the fine tuning (FINE) function.
(page 10)
• Adjust the antenna direction. Contact a
Sony dealer for advice.
• Turn off or disconnect the booster if it is
in use.
• Press SELECT until “COLOR” appears
on the screen, then press + or – to adjust
the color level. (page 10)
• Press SELECT until “COL SYS ” appears
on the screen, then check the color
system setting (usually set this to
“AUTO”). (page 10).
• Adjust the antenna direction. Contact a
Sony dealer for advice.
• Locate the TV away from external
speakers or other equipment. Do not
move the TV while the TV is turned on.
Press U  (main power) on the TV to
turn off the TV for about five minutes,
then turn it on again.
Good picture
No sound
Dotted lines or stripes
Double images or
“ghosts”
No color
Abnormal color patches
• The volume level is too low.
• The sound is muted.
• There is local interference
from cars, neon signs, hair
dryers, power generators,
etc.
• Broadcast signals are
reflected by nearby
mountains or buildings.
• The antenna direction is
inapproprite.
• Use of a booster is
inappropriate.
• The color level setting is
too low.
• The color system setting is
inappropriate.
• The antenna direction is
inapproriate.
• The magnetic disturbance
external speakers or other
equipment, or the direction
of the earth’s magnetic
field may affect the TV.
continued
22
Additional Information
• Display the SET UP menu and adjust
“PIC ROTATION” so that the picture is
aligned to the TV screen. (page 25)
• Use the fine tuning (FINE) function.
(page 10)
• Contact your nearest Sony service
center.
Possible cause
Symptom
Solutions
Picture slant
Lines moving across the
TV screen.
The 
u
 (standby) indicator
on your TV flashes red for
about 3 seconds per
interval.
TV cabinet creaks.
A “boom” sound is heard
when the TV is turned on.
• The terrestrial magnetism
affects your TV set.
• There is inteference from
external sources, e.g.,
heavy machineries, nearby
broadcast station.
• Your TV may need service.
• Changes in room
temperature sometimes
make the TV cabinet
expand or contract, making
a noise. This does not
indicate a malfunction.
• The TV’s demagnetizing
function is working. This
does not indicate a
malfunction.
Troubleshooting (continued)
– 18 –
KV
-XF21M80
RM-952
23
Additional Information
Identifying parts and controls
Refer to the pages indicated in parentheses ( ) for details.
Front panel
1
U
 (main power) button (11)
2 AUTO PROGR (program) button (5)
3 SELECT button (12)
4 PROGR +/– (program) buttons (11)
5
¸
 +/– (volume) buttons (11)
6
 (TV/video) button (12)
7
2
 (headphones) jack
ONE-PUSH  AUTOMATIC  PROGRAMING
ONE-PUSH  AUTOMATIC  PROGRAMING
2
– 19 –
KV
-XF21M80
RM-952
SECTION 2
DISASSEMBLY
2-2. CHASSIS ASSY REMOVAL
1
 Chassis assy
Lever
Lever
2-1. REAR COVER REMOVAL
1
 Four screws
     (+BVTP 4 
× 
16)
1
 One screw
     (+BVTP 4 
× 
16)
2
 Rear cover
2-3. F BRACKET REMOVAL
3
 One screw
     (+BVTP 3 
× 
12)
1
 Three connectors
2
 F board
Lever
2-4. SERVICE POSITION
(Note: Remove F Bracket first.)
– 20 –
KV
-XF21M80
RM-952
2-6. TERMINAL BRACKET REMOVAL
A board
Terminal board bracket
2-5-2. REPLACEMENT OF LIGHT GUIDE
2-5. REPLACEMENT OF PARTS
For replacement of the Multi Button and Light Guide, cut the welded portions from
them, exchange with the new parts, and fix them with screws (+BVTP) respectively.
2-5-1. REPLACEMENT OF MULTI BUTTON
Multi button
Two screws
(+BVTP 3 
× 
12)
Light guide
One screw
(+BVTP 3 
× 
12)
Multi button
Cut 
Light guide
Cut
2-7. DEGAUSS COIL REMOVAL
1
 Demagnetization coil
2
 Tension spring
Picture tube
Page of 46
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