DOWNLOAD Sony KV-J21MF1AK Service Manual ↓ Size: 719.58 KB | Pages: 54 in PDF or view online for FREE

Model
KV-J21MF1AK
Pages
54
Size
719.58 KB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kv-j21mf1ak.pdf
Date

Sony KV-J21MF1AK Service Manual ▷ View online

– 9 –
KV
-J21MF1AK/J21MF3
KV
-J21MN1AK/J21PF1
RM-883
Operations
12
Adjusting the
picture
Adjusting the sound and picture settings
1
Press SELECT until the item you want to
adjust appears.
Each time you press SELECT, the screen changes
as follows:
2
Press + or – to adjust the item.
3
To adjust other items, repeat steps 1 and 2.
Notes
You can also use SELECT and VOLUME +/– on the TV to
adjust the sound and picture settings.
SURROUND is only applicable to a stereo signal. When
receiving a monaural signal, please turn off SURROUND for
the best sound.
If the picture color is abnormal when receiving
programs through the 
˘ (antenna) terminal
Change the “TV SYSTEM” (for KV-J21MF1AK/J21MN1AK/
J21MF3 only) or “COLOR SYSTEM” setting or adjust the “COLOR”
level in the on-screen display until the color becomes normal.
If the picture color is abnormal when receiving
programs through the video input jack
Change the “COLOR SYSTEM” setting or adjust the “COLOR”
level in the on-screen display until the color becomes normal.
Note
Normally set “COLOR SYSTEM” to “AUTO”.
If the sound is distorted or noisy when receiving
programs through the 
˘ (antenna) terminal
Change the “TV SYSTEM” setting (for KV-J21MF1AK/
J21MN1AK/J21MF3 only) in the on-screen display until the
sound becomes clear.
Adjusting the sound
and picture
÷
0
SOUND
MODE
SELECT
PIC MODE
Selecting the sound mode
Press SOUND MODE until the mode you want
appears.
Each time you press SOUND MODE, the screen
changes as follows:
Selecting the picture mode
Press PIC MODE until the mode you want
appears.
Each time you press PIC MODE, the screen changes as
follows:
Note
If you change the picture and sound mode after the following
adjustments, the adjustment changes in accordance with the
picture and sound mode.
MUSIC
DRAMA
SPORTS
SOFT
Emphasize
low and high
sound effect
Emphasize
huge
audience
atmosphere
Emphasize
vocals and
background
music
Emphasize
soft sound
Front of TV
SOUND
MODE
High contrast
picture
DYNAMIC
STANDARD
SOFT
Normal
picture
PIC MODE
Soft picture
PICTURE
COLOR
BRIGHT
HUE
SHARPNESS
BASS
BALANCE
SURROUND
TREBLE
SELECT
MANUAL PROGR
COLOR SYSTEM
R
SELECT
TV SYSTEM
AUTO PROGR
+ or –
(Operative for
NTSC signal only)
13
Operations
A/B
ENLARGE
Selecting a stereo or
bilingual program
p
 KV-J21MN1AK only
Press A/B/ENLARGE repeatedly until you
receive the sound you want.
The on-screen display changes corresponding to the
selected sound and the WAKE UP/STEREO indicator
also lights up.
When receiving a NICAM program
Broadcasting
NICAM stereo
NICAM bilingual
NICAM monaural
When receiving an A2 (German) program
Broadcasting
A2 (German)
stereo
A2 (German)
bilingual
Notes
If the signal is very weak, the sound becomes monaural
automatically.
If the stereo sound is noisy when receiving a NICAM program,
select “MONO”. The sound becomes monaural, however, the
noise will be reduced.
If the sound is distorted or noisy when
receiving a monaural program through the 
˘
(antenna) terminal
Press A/B/ENLARGE repeatedly until “MONO”
appears on the screen.
To cancel the monaural sound setting, press
A/B/ENLARGE again until “AUTO” appears on the
screen.
Notes
The “MONO” or “AUTO” setting is memorized for each
program position.
You cannot receive stereo signal when the TV is in the
“MONO” setting.
On-screen display
(Selected sound)
NICAM
z
(Stereo sound)
MONO
z
 (Regular sound)
NICAM
z
MAIN
(Main sound)
NICAM
z
SUB
(Sub sound)
NICAM
z
MAIN
(Main sound)
MONO
z
(Regular sound)
MONO
z
(Regular
sound)
On-screen display
(Selected sound)
STEREO
(Stereo sound)
z
MAIN
(Main sound)
z
SUB
(Sub sound)
z
   MONO
z
   AUTO
– 10 –
KV
-J21MF1AK/J21MF3
KV
-J21MN1AK/J21PF1
RM-883
Additional Information
14
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.
Snowy picture
Noisy sound
/ Check the antenna.
/ Check the antenna connection on the TV
and on the wall.
/ Check the TV SYSTEM setting
(KV-J21MF1AK/J21MN1AK/J21MF3 only).
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.
Double images or “ghosts”
/ This may be caused by reflections from
nearby mountains or buildings. A highly
directional antenna may improve the picture.
No picture
No sound
/ Press POWER.
/ Check the antenna connection.
/ Check the VCR connections.
/ Check the power cord connection.
/ Check the standby mode.
Good picture
Noisy sound
/Check the TV SYSTEM setting (KV-
J21MF1AK/J21MN1AK/J21MF3 only).
/Reduce the TREBLE level or select the
“SOFT” sound mode.
Good picture
No sound
/Press VOLUME +.
/Press MUTING.
/Press A/B/ENLARGE (KV-J21MN1AK).
No color
/Adjust the COLOR level in the on-screen
display.
/Check the COLOR SYSTEM setting.
TV cannot receive stereo signal
/Press A/B/ENLARGE until “AUTO”
appears on the screen (KV-J21MN1AK).
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.
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.
Note on the TV SYSTEM button
The TV SYSTEM button is not used on your TV (KV-J21PF1
only).
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.
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.
WARNING
Do not install the appliance in a confined space, such as
a bookcase or built-in cabinet.
– 11 –
KV
-J21MF1AK/J21MF3
KV
-J21MN1AK/J21PF1
RM-883
2-1. REAR COVER REMOVAL
2-2. A BOARD REMOVAL
2-3. SERVICE POSITION
SECTION 2
DISASSEMBLY
A board
Lever
Lever
A board
2 Two screws
(BVTP 4
×
16)
3
One screw
(BVTP 3
×
16)
1 Two screws
(BVTP 4
×
16)
– 12 –
KV
-J21MF1AK/J21MF3
KV
-J21MN1AK/J21PF1
RM-883
2-4. REPLACEMENT OF PARTS
For replacement of the Multi Button, Power Button and Light Guide, cut the welded portions
from them, exchange with the new parts, and fix them with screws (+BVTP) respectively.
2-4-1. REPLACEMENT OF MULTI BUTTON
2-4-2. REPLACEMENT OF LIGHT GUIDE
2-5. DEMAGNETIZATION COIL REMOVAL
1 Demagnetization coil
2 Tension spring
Picture tube
Cut 
Multi button
Two screws
(BVTP 3
×
12)
Light guide
Cut
One screw
(BVTP 3
×
12)
Page of 54
Display

Click on the first or last page to see other KV-J21MF1AK service manuals if exist.