DOWNLOAD Sony KV-29FS12A Service Manual ↓ Size: 14.46 MB | Pages: 55 in PDF or view online for FREE

Model
KV-29FS12A
Pages
55
Size
14.46 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kv-29fs12a.pdf
Date

Sony KV-29FS12A Service Manual ▷ View online


 13 
K
V-29FS12A
Other Information
39
Troubleshooting
If you are having a problem with your TV, try the suggestions below. If
the problem persists, contact your nearest Sony dealer.
No picture, no
sound
 Make sure the power cord is plugged in.
 If red light is flashing on the front of your TV for more
than a few minutes, disconnect and reconnect the
power cord to restore the TV. If the problem continues,
call your local service center.
 Check the TV/VIDEO settings: when watching TV, set
to TV; when watching video equipment, set to VIDEO
(page 14).
 Make sure the batteries have been inserted correctly
into the remote control (page 2).
 Try another channel, it could be station trouble.
Poor or no
picture, good
sound
 Adjust Picture in the Video menu (page 22).
 Adjust Brightness in the Video menu (page 22).
 Check the antenna and/or cable connections (page 3).
Good picture,
no sound
 Press
so that MUTING disappears from the
screen (page 14).
 Check your Audio settings. Your TV may be set to
Auto-SAP (page 24).
No color
 Adjust Color in the Video menu (page 22).
No signal
 Check the Cable setting in the Channel Setup menu
(page 25).
 Check the antenna and/or cable connections (page 3).
 Make sure the channel selected is currently
broadcasting.
Dotted lines or
stripes
 Adjust the antenna.
 Move the TV away from other electronic equipment.
Some electronic equipment can create electrical noise,
which can interfere with TV reception.
Double images
or ghosts
 Check your outdoor antenna or call your cable service.
40
 Operating Instructions
If, after reading these Operating Instructions, you have additional questions related to the use of your
Sony television, please call our Direct Response Center at 1-800-222-SONY (7669) (U.S. residents
only) or (416) 499-SONY (7669) (Canadian residents only).
Cannot receive
higher number
channels (UHF)
when using an
antenna
 Make sure Cable is set to OFF in the Channel Setup
menu (page 25).
 Perform Auto Program to add channels that are not
presently in the memory (page 16).
Cable stations
don’t seem to
work
 Make sure Cable is set to ON in the Channel Setup
menu (page 25).
 Perform Auto Program to add channels that are not
presently in the memory (page 16).
Remote control
does not
operate
 Batteries could be weak. Replace them (page 2).
 Move the TV 3-4 feet away from fluorescent lights.
The TV needs
to be cleaned
 Clean the TV with a soft dry cloth. Never use strong
solvents such as thinner or benzine, which might
damage the finish of the cabinet.
Lost password
for Parental
Control
 In the password screen, enter the following master
password: 4357. After using the master password, you
must create a new password, it cannot be used to
unlock currently blocked channels.
You lost your
remote control
 You can use the front A/V panel controls to access the
menu. Press
to open the menu. Use the
or
buttons on the front A/V panel instead of the
F or
buttons on the remote control. Use the
button on
the front A/V panel instead of the
G, g
, and
buttons on the remote control. Press
again when
the setting or adjustment is complete. Contact your
nearest Sony dealer to order a replacement.
Cannot access
other menus
when using the
Basic Menu
 If you use the
button to close the Basic menu, only
the Basic menu appears when you press
again. To
have access to the other menus, use the
button to
select Advance Menu (page 35).
F
F
— 14 —
KV-29FS12A
SECTION 2
DISASSEMBLY
2-1. REAR COVER REMOVAL
2-2. CHASSIS ASSEMBLY REMOVAL
2-3. SERVICE  POSITION
CA Board
A Board
D Board
VA Board
MA Board
Screw +BVTP 4x16
Screw  +BVTP 4x16
Rear Cover
Screw +BVTP 4x16
Screw +BVTP 4x16
Screw +BVTP 4x16
Screw +BVTP 4x16
Screw +BVTP 4x16
Claw
Chassis
Assembly
— 15 —
KV-29FS12A
Coated
Earth
Ground
Strap
2-4. PICTURE TUBE REMOVAL
WARNING:
BEFORE REMOVING
THE ANODE CAP
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
CRT coated earth ground strap.
a
REMOVAL PROCEDURES
HOW TO HANDLE AN ANODE CAP
WARNING:  High voltage remains in the CRT even after the power is disconnected. To avoid electrical shock, discharge the CRT before
attempting to remove the anode cap. Short between anode and coated earth ground strap of CRT.
NOTE: 
After removing the anode, 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.
1
Do not use sharp objects which may cause damage to the
surface of the anode cap. 
3
Do not force turn the foot of the rubber cover. This may cause
the shatter-hook terminal to protrude and damage the rubber. 
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. 
2
Use your thumb to pull the rubber
cap firmly in the direction indicated
by arrow  
b
 . 
3
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
Turn up one side of the rubber cap in
the direction indicated by arrow  
a
 .
b
Anode Button
c
ANODE CAP REMOVAL
6.
Loosen the deflection yoke fixing screw and remove.
7.
Place the set with the CRT face down on a cushion and remove
the degaussing coil holders.
8.
Remove the degaussing coils.
9.
Remove the CRT grounding strap and spring tentioners.
10. Unscrew the four CRT fixing screws [located on each CRT
corner] and remove the CRT  [Take care not to handle the
CRT by the neck].
1.
Discharge the anode of the CRT and remove the anode cap.
2.
Unplug all interconnecting leads from the deflection yoke, neck
assembly, degaussing coils and CRT grounding strap.
3.
Remove the CA Board from the CRT.
4.
Remove the chassis assembly.
5.
Loosen the neck assembly fixing screw and remove.
2
3
4
9
8
7
6
5
10
1
— 16 —
KV-29FS12A
SECTION 3
SET-UP ADJUSTMENTS
3-1. BEAM LANDING
Before beginning adjustment procedure:
1. Degauss the entire screen.
2. Feed in the white pattern signal.
Adjustment Procedure
1. Input a raster signal with the pattern generator.
2. Loosen the deflection yoke mounting screw and set the purity
control to the center as shown below.
Purity Control
3. Turn the raster signal of the pattern generator to green.
4. Move the deflection yoke backward and adjust the purity
control so that green is in the center and red and blue are
at the sides evenly.
 
Blue
Red
Green
5. Move the deflection yoke forward and adjust so that the entire
screen becomes green.
6. Switch over the raster signal to red and blue and confirm
the condition.
7. When the position of the deflection yoke is determined,
tighten it with the deflection yoke mounting screw.
8. If landing at the corner is not right, adjust by using the disk
magnets.
The following adjustments should be made when
a complete realignment is required or when a new
picture tube is installed.
These adjustments should be performed with rated
power supply voltage unless otherwise noted.
Set the controls as follows unless otherwise noted:
VIDEO MODE: STANDARD
PICTURE control: ................ Normal
BRIGHTNESS control: ........ Normal
Perform the adjustments in order as follows:
1. Beam Landing
2. Convergence
3. Focus
4. Screen (G2)
5. White Balance
Note: Test equipment required:
• Color Bar Pattern Generator
• Degausser
• DC Power Supply
• Digital Multimeter
a
c
b
d
b
a
c
d
Purity control
corrects this area
Disk magnets
or rotatable disk
magnets correct
these areas (a-d)
Deflection yoke positioning
corrects these areas
Page of 55
Display

Click on the first or last page to see other KV-29FS12A service manuals if exist.