Sony KV-27FS12, KV-27FS16, KV-29FS12 Service manual

SERVICE MANUAL
MODEL COMMANDER DEST CHASSIS NO.
BA-5 CHASSIS
KV -27FS12 KV -27FS12 KV -27FS16 KV -29FS12 KV -29FS12C
RM-Y168 US SCC-S40D-A RM-Y168 CND SCC-S41D-A RM-Y169 US SCC-S40E-A RM-Y168 E SCC-S38K-A RM-Y168 E SCC-S38L-A
KV-27FS16
RM-Y168
TRINITRON® COLOR TV
KV-27FS12/27FS16/29FS12/29FS12C
KV-27FS12 KV-27FS16 KV-29FS12 KV-29FS12C
Power requirements 120V, 60Hz 120V, 60Hz 120V/220V, 60Hz/50Hz 120V/220V, 60Hz/50Hz Number of inputs/outputs
Video
1)
3333
S Video
2)
1111
Audio
3)
3333
Audio Out
4)
1111
Y, P
B
, P
R
5)
1111
Speaker output(W) 5Wx2 5Wx2 10Wx2 10Wx2
Power Consumption(W)
In use(Max) 160W 170W 185W 185W In standby 1W 1W 1W 1W
Dimensions(W/H/D)
(mm)
700 x 632 x 512 mm. 700 x 632 x 512 mm. 700 x 632 x 512 mm. 700 x 632 x 512 mm.
(in)
27
1/2
x 24
7/8
x 20
1/6
in. 27
1/2
x 24
7/8
x 20
1/6
in. 27
1/2
x 24
7/8
x 20
1/6
in. 27
1/2
x 24
7/8
x 20
1/6
in.
Mass
(kg) 47kg 47kg 47kg 47kg (lbs) 103 lbs. 10 oz. 103 lbs. 10 oz. 103 lbs. 10 oz. 103 lbs. 10 oz.
1) 1 Vp-p 75 ohms unbalanced, sync negative
2) Y: 1 Vp-p 75 ohms unbalanced, sync negative C: 0.286 Vp-p (Burst signal), 75 ohms
3) 500mVrms (100% modulation), impedance: 47kilohms
4) More than 408 mVrms at the maximum volume setting (variable) More than 408 mVrms (fix)
5) Y: 1.0 Vp-p, 75 ohms, sync negative; P
R: Vp-p, 75 ohms
P

SPECIFICATIONS

B: 0.7 Vp-p, 75 ohms;
Television system
American TV standard/NTSC
Channel coverage
VHF:2-13/UHF:14-69/CATV:1-125
Visible screen size
27” picture measured diagonally
Actual screen size
29” picture measured diagonally
Antenna
75 ohm external antenna terminal for VHF/UHF
Supplied accessories
Remote Commander RM-Y168 (ALL EXCEPT KV-27FS16) Remote Commander RM-Y169 (KV -27FS16 ONLY) Size AA (R6) batteries (2)
Optional accessories
Connecting cables: VMC-810S/820S, VMC-720M, YC-15V/30V , RK74A U/V mixer EAC-66 TV Stand: SU27FD3
Design and specifications are subject to change without notice.
2
KV-27FS12/27FS16/29FS12/29FS12C

TABLE OF CONTENTS

Section Title Page
Warnings and Cautions ....................................................................................................................................... 4
Self-Diagnostic Function ...................................................................................................................................... 4
Safety Check-Out Instructions.............................................................................................................................. 7
1. GENERAL ........................................................................................................................................................... 8
2. DISASSEMBLY
2-1. Rear Cover Removal............................................................................................................................... 14
2-2. Chassis Assembly Removal..................................................................................................................... 14
2-3. Service Position ...................................................................................................................................... 14
2-4. Picture Tube Removal............................................................................................................................. 15
3. SET-UP ADJUSTMENTS
3-1. Beam Landing......................................................................................................................................... 16
3-2. Convergence .......................................................................................................................................... 17
3-3. Focus...................................................................................................................................................... 18
3-4. Screen (G2) ............................................................................................................................................ 19
3-5. Method of Setting the Service Adjustment Mode..................................................................................... 19
3-6. White Balance Adjustment s .................................................................................................................... 19
4. SAFETY RELATED ADJUSTMENTS
4-1.
4-2. B+ V oltage Confirmation and Adjustment................................................................................................ 20
5. CIRCUIT ADJUSTMENTS
5-1. Setting the Service Adjustment Mode...................................................................................................... 22
5-2. Memory Write Confirmation Method........................................................................................................ 22
5-3. Adjustment Buttons and Indicators.......................................................................................................... 22
5-4. MA Board Adjustment s............................................................................................................................ 25
6. DIAGRAMS
6-1. Block Diagram......................................................................................................................................... 31
6-2. Circuit Board Location............................................................................................................................. 35
6-3. Printed Wiring Boards and Schematic Diagrams..................................................................................... 35
6-4. Semiconductors ...................................................................................................................................... 57
7. EXPLODED VIEW
7-1. Chassis (KV-27FS16/27FS12 ONL Y) .................................................................................................... 58
7-2. Chassis (KV -29FS12/29FS12C ONL Y)................................................................................................... 59
R564 Confirmation Method (HV Hold-Down Confirmation and Readjustments) ................................. 20
• A Board .............................................................................................................................................. 36
• MA Board............................................................................................................................................ 43
• CA Board............................................................................................................................................ 49
• HX Board............................................................................................................................................ 50
• D Board .............................................................................................................................................. 51
• K Board .............................................................................................................................................. 53
• V A Board ............................................................................................................................................ 54
• P Board .............................................................................................................................................. 55
8. ELECTRICAL PARTS LIST
................................................................................................................................................ 60
3
KV-27FS12/27FS16/29FS12/29FS12C

WARNINGS AND CAUTIONS

CAUTION
SHORT CIRCUIT THE ANODE OF THE PICTURE TUBE AND THE ANODE CAP TO THE METAL CHASSIS, CRT SHIELD, OR CARBON PAINTED ON THE CRT, AFTER REMOVING THE ANODE.
WARNING!!
AN ISOLATION TRANSFORMER SHOULD BE USED DURING ANY SERVICE TO AVOID POSSIBLE SHOCK HAZARD, BECAUSE OF LIVE CHASSIS. THE CHASSIS OF THIS RECEIVER IS DIRECTLY CONNECTED TO THE AC POWER LINE.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK
ON THE SCHEMATIC DIAGRAMS, EXPLODED VIEWS, AND IN THE PARTS LIST ARE CRITICAL FOR SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. CIRCUIT ADJUSTMENTS THAT ARE CRITICAL FOR SAFE OPERA TION ARE IDENTIFIED IN THIS MANUAL. FOLLOW THESE PROCEDURES WHENEVER CRITICAL COMPONENTS ARE REPLACED OR IMPROPER OPERATION IS SUSPECTED.
ATTENTION!!
APRES AVOIR DECONNECTE LE CAP DE L'ANODE, COURT-CIRCUITER L'ANODE DU TUBE CATHODIQUE ET CELUI DE L'ANODE DU CAP AU CHASSIS METALLIQUE DE L'APPAREIL, OU AU COUCHE DE CARBONE PEINTE SUR LE TUBE CATHODIQUE OU AU BLINDAGE DU TUBE CATHODIQUE.
ATTENTION!!
AFIN D'EVITER TOUT RESQUE D'ELECTROCUTION PROVENANT D'UN CHÁSSIS SOUS TENSION, UN TRANSFORMATEUR D'ISOLEMENT DOIT ETRE UTILISÉ LORS DE TOUT DÉPANNAGE. LE CHÁSSIS DE CE RÉCEPTEUR EST DIRECTEMENT RACCORDÉ À L'ALIMENTATION SECTEUR.
ATTENTION AUX COMPOSANTS RELATIFS A LA SECURITE!!
LES COMPOSANTS IDENTIFIES PAR UNE TRAME ET PAR UNE MARQUE
SUR LES SCHEMAS DE PRINCIPE, LES VUES EXPLOSEES ET LES LISTES DE PIECES SONT D'UNEIMPORTANCE CRITIQUE POUR LA SECURITE DU FONCTIONNEMENT. NE LES REMPLACER QUE PAR DES COMPOSANTS SONY DONT LE NUMERO DE PIECE EST INDIQUE DANS LE PRESENT MANUEL OU DANS DES SUPPLEMENTS PUBLIES P AR SONY. LES REGLAGES DE CIRCUIT DONT L'IMPORT ANCE EST CRITIQUE POUR LA SECURITE DU FONCTIONNEMENT SONT IDENTIFIES DANS LE PRESENT MANUEL. SUIVRE CES PROCEDURES LORS DE CHAQUE REMPLACEMENT DE COMPOSANTS CRITIQUES, OU LORSQU'UN MAUVAIS FONTIONNEMENT SUSPECTE.
SELF-DIAGNOSTIC FUNCTION
The units in this manual contain a self-diagnostic function. If an error occurs, the ST ANDBY/TIMER LED will automatically begin to flash. The number of times the LED flashes translates to a probable source of the problem. A definition of the STANDBY/TIMER LED flash indicators is listed in the instruction manual for the users knowledge and reference. If an error symptom cannot be reproduced, the Remote Commander can be used to review the failure occurrence data stored in memory to reveal past problems and how often these problems occur.
Diagnostic Test Indicators
When an error occurs, the STANDBY/TIMER LED will flash a set number of times to indicate the possible cause of the problem. If there is more than one error, the LED will identify the first of the problem areas.
Results for all of the following diagnostic items are displayed on screen. No error has occurred if the screen displays a “0”.
4
Display of Standby/Timer LED Flash Count
2 times 4 times 5 times
KV-27FS12/27FS16/29FS12/29FS12C
LED ON 0.3 sec. LED OFF 0.3 sec.
LED OFF
3 sec.
STANDBY/TIMER LED
Diagnostic Item Flash Count*
+B overcurrent 2 times I-Prot 4 times IK 5 times
*One flash count is not used for self-diagnostic.
Stopping the Standby/Timer LED Flash
Turn off the power switch on the TV main unit or unplug the power cord from the outlet to stop the STANDBY/TIMER LAMP from flashing.
Self-Diagnostic Screen Display
For errors with symptoms such as power sometimes shuts off or screen sometimes goes out that cannot be confirmed, it is possible to bring up past occurrences of failure on the screen for confirmation.
To Bring Up Screen Test
In standby mode, press buttons on the Remote Commander sequentially, in rapid succession, as shown below:
Display Channel
5
Sound volume
Power ON
Self-Diagnostic Screen Display
SELF DIAGNOSTIC
2: 0 3: N/A 0 4: 0 5: 1 101: N/A 0
Note that this differs from entering the service mode (sound volume
Numeral “0” means that no fault was detected.
Numeral “1” means a fault was detected one time only.
5
+
).
KV-27FS12/27FS16/29FS12/29FS12C
Handling of Self-Diagnostic Screen Display
Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic screen during repairs. When you have completed the repairs, clear the result display to “0”.
Unless the result display is cleared to “0”, the self-diagnostic function will not be able to detect subsequent faults after completion of the repairs.
Clearing the Result Display
To clear the result display to “0”, press buttons on the Remote Commander sequentially when the diagnostic screen is displayed, as shown below:
8
ENTERChannel
Quitting the Self-Diagnostic Screen
To quit the entire self-diagnostic screen, turn of f the power switch on the Remote Commander or the main unit.
Self-Diagnostic Circuit
FROM
CA BOARD
CN 705 PIN 1
FROM
A BOARD
IC501 PIN 3
MA BOARD
IC301
Y/CHROMA JUNGLE
IK IN
36
HP/PROTECT
33
SDA
A BOARD
IC502
V. OUT
3
REF
61
5
43
MA BOARD
IC001
SYSTEM
I-PROT
IO-SDAT
IO-BDAT
O-LED
42
22
DISPLAY
MA BOARD
MEMORY
B-DAT
5
IC003
+B overcurrent (OCP) Occurs when an overcurrent on the +B (135V) line is detected by pin 33 of IC301 (MA Board). If
the voltage of pin 33 of IC301 (MA Board) is less than 1V when V.SYNC is more than seven verticals in a period, the unit will automatically turn off.
I-Prot Occurs when an absence of the vertical deflection pulse is detected by pin 5 of IC001 (MA
Board). Power supply will shut down when waveform interval exceeds 2 seconds.
IK If the RGB levels* do not balance within 2 seconds after the power is turned on, this error will be
detected by IC301 (MA Board). TV will stay on, but there will be no picture.
*(Refers to the RGB levels of the AKB detection Ref pulse that detects 1K).
6
SAFETY CHECK-OUT
KV-27FS12/27FS16/29FS12/29FS12C
After correcting the original service problem, perform the following safety checks before releasing the set to the customer:
1. Check the area of your repair for unsoldered or poorly soldered connections. Check the entire board surface for solder splashes and bridges.
2. Check the interboard wiring to ensure that no wires are pinched or touching high-wattage resistors.
3. Check that all control knobs, shields, covers, ground straps, and mounting hardware have been replaced. Be absolutely certain that you have replaced all the insulators.
4. Look for unauthorized replacement parts, particularly transistors, that were installed during a previous repair . Point them out to the customer and recommend their replacement.
5. Look for parts which, though functioning, show obvious signs of deterioration. Point them out to the customer and recommend their replacement.
6. Check the line cords for cracks and abrasion. Recommend the replacement of any such line cord to the customer.
7. Check the B+ and HV to see if they are specified values. Make sure your instruments are accurate; be suspicious of your HV meter if sets always have low HV .
8. Check the antenna terminals, metal trim, “metallized” knobs, screws, and all other exposed metal parts for AC leakage. Check leakage as described below.
Leakage Test
The AC leakage from any exposed metal p art to earth ground and from all exposed metal parts to any exposed metal part having a return to chassis, must not exceed 0.5 mA (500 microamperes). Leakage current can be measured by any one of three methods.
1. A commercial leakage tester , such as the Simp son 229 or RCA WT-540A. Follow the manufacturers' instructions to use these instructions.
2. A battery-operated AC milliammeter . The Data Precision 245 digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a VOM or battery-operated AC voltmeter. The “limit” indication is 0.75 V , so analog meters must have an accurate low voltage scale. The Simpsons 250 and Sanwa SH-63TRD are examples of passive VOMs that are suitable. Nearly all battery-operated digital multimeters that have a 2 VAC range are suitable (see Figure A).
How to Find a Good Earth Ground
A cold-water pipe is a guaranteed earth ground; the cover­plate retaining screw on most AC outlet boxes is also at earth ground. If the retaining screw is to be used as your earth ground, verify that it is at ground by measuring the resistance between it and a cold-water pipe with an ohmmeter. The reading should be zero ohms. If a cold-water pipe is not accessible, connect a 60- to 100-watt trouble- light (not a neon lamp) between the hot side of the receptacle and the retaining screw. Try both slots, if necessary , to locate the hot side on the line; the lamp should light at normal brilliance if the screw is at ground potential (see Figure B).
7
Trouble Light
AC Outlet Box
Figure B. Checking for earth ground.Figure A. Using an AC voltmeter to check AC leakage.
Ohmmeter
Cold-water Pipe
The instructions mentioned here are partial abstracts from the Operating Instruction Manual.
4
Operating Instructions
Cable Box Connections
Some pay cable TV systems to use scrambled or encoded signals that requireacableboxtoviewallchannels.
Cable Box
1
Connect the coaxial cable from your cable service to the IN jack on your cable box.
2
Connect a coaxial cable (not supplied) from the OUT jack on your cable box to the VHF/UHF jack on your TV.
Cable Box and Cable
For this set up, you can switch between scramble channels (through your cable box), and normal (CATV) channels by using the button.
If you will be controlling all channel selection through your cable box, you should consider using the Channel Fix feature, (see page 26).
If you are connecting a cable box through the AUX input and would like to switch between the AUX and normal (CATV) input, you should consider using the Channel Fix feature, (see page 26).
Your Sony remote control can be programmed to operate your cable box, (see page 36).
When using PIP, you cannot view the AUX input in the window picture.
Cable
IN
OUT
(Rear of TV)
VHF/UHF
Cable Box
Cable Box
(Rear of TV)
AUX
OUT
IN
TO CONVERTER
(Signal)
VHF/UHF
75-ohm coaxial cable (not supplied)
CATV cable (unscrambled channels)
The page numbers shown reflect those of the Operating Instruction Manual.
Connecting Your TV
Read this chapter before setting up your TV for the first time. This section covers basic connections in addition to any optional equipment you may be connecting.
KV-27FS12/27FS16/29FS12/29FS12C
SECTION 1 GENERAL
8
Basic Connections
TV with indoor or outdoor antenna, or CATV cable
Depending on the cable available in your home, choose one of the connections below:
If you are connecting to an indoor or outdoor antenna, you may need to adjust the orientation of the antenna for best reception.
3
Connecting Your TV
6
Operating Instructions
TV and Cable Box
1
Connect the coaxial cable f rom your cable service to the IN jack on your cable box.
2
Connect a coaxial cable (not supplied) from the OUT jack on your cable box to the VHF/UHF jack on the TV.
To view channels from your cable box, tune your TV to channel 3 or 4 (as set on the rear panel of your cable box) and use the cable box’s remote control to change channels.
If you will be controlling all channel selection through your cable box, you should consider using the Channel Fix feature, (see page 26).
1
cable
2
Cable Box
Rear of TV
From
Connecting Additional Equipment
TV and VCR
1
From cable/ antenna
9
1 Connect the coaxial cable from your TV antenna or cable service to
the IN jack on your VCR.
2 Connect a coaxial cable (not supplied) from the OUT jack on your
VCR to the VHF/UHF jack on the TV.
To watch video programs from your VCR, tune your TV to channel 3 or 4 (as set on the rear of your VCR).
(Optional connection)
3 If your VCR is equipped with video outputs, you can get better
picture quality by connecting A/V cables (not supplied) from AUDIO and VIDEO OUT on your VCR to AUDIO/VIDEO IN on your TV.
For optimum picture quality, use S VIDEO instead of the yellow A/V cable. S VIDEO does not provide sound, the audio cables must still be connected.
2
VCR
(Optional connection)
3
Rear of TV
KV-27FS12/27FS16/29FS12/29FS12C
You can use the button to switch between the VHF/UHF and VIDEO inputs.
5
TV, Cable box, and Cable
8
Operating Instructions
TV, VCR, and Cable box
1
Connect the coaxial cable from your cable service to the IN jack on your cable box.
2
Connect a coaxial cable (not supplied) from the OUT jack on your cable box to the IN jack on your VCR.
3
Connect a coaxial cable (not supplied) from the OUT jack on your VCR to the VH F/UHF jack on the TV.
(Optional connection)
4
If your VCR is equipped with video outputs, you can get better picture quality by connecting A/V cables (not supplied) from AUDIO and VIDEO OUT on your VCR to AUDIO/VIDEO IN on your TV.
If you will be controlling all channel selection through your cable box, you should consider using the Channel Fix feature, (see page 26).
For optimum picture quality, use S VIDEO instead of the yellow A/V cable. S VIDEO does not provide sound, the audio cables must still be connected.
You can use the button to switch between the VHF/UHF and VIDEO inputs.
3
Cable
4
(Optional connection)
Cable box
1
VCR
2
Rear of TV
KV-27FS16, KV-27FV16, KV-32FS16, KV-29FV16 only
For this set up, you can switch between scrambled channels (through your cable box) and normal (CATV) channels by pressing .
Cable Box
KV-27FS12/27FS16/29FS12/29FS12C
Connecting Your TV
Rear of TV (KV-27FV16 only)
10
When using PIP, the AUX input cannot be viewed in the window picture.
From Cable
7
Connecting Your TV
10
Operating Instructions
TV, Satellite Receiver, and VCR
1
Connect the cable from your satellite antenna to SATELLITE IN on your satellite receiver.
2
Connect the coaxial cable from your cable or antenna to the IN jack on your VCR.
3
Using a co axi al cable, connect the OUT jack on your VCR to the VHF/UHFjackonyourTV.
4
Using A/V cables, connect AUDIO and VIDEO OUT on your satellite receiver to AUDIO and VIDEO IN on your VCR.
5
Using A/V cables, connect AUDIO and VIDEO OUT on your VCR to AUDIO and VIDEO IN on your TV.
To view from the satellite receiver or VCR, select the video input to which your satellite receiver or VCR is connected by pressing on the remote control.
AUDIO R AUDIO L VIDEO
VHF/UHF
OUT
IN
LINE OUT
LINE IN
VHF/UHF
OUT
IN
SATELLITE IN
AUDIO R AUDIO L VIDEO
LINE OUT
Satellite receiver
4
5
2
3
1
Rear of TV
VCR
Satellite antenna
From
antenna
cable/
cable
TV and Satellite Receiver
Satellite receiver
SATELLITE IN
LINE OUT
AUDIO R AUDIO L VIDEO
3
antenna
1
Satellite
cable
2
From cable/ antenna
VHF/UHF
IN
OUT
11
1
Connect the cable from your satellite antenna to SATELLITE IN on your satellite receiver.
2
Connect the coaxial cable from your cable or antenna to the VHF/UHFjackonyourTV.
3
Using A/V cables, connect AUDIO and VIDEO OUT on your satellite receiver to AUDIO and VIDEO IN on your TV.
For optimum picture quality, use S VIDEO instead of the yellow A/V cable. S VIDEO does not provide sound, the audio cables must still be connected.
You can use the button to switch between the VHF/UHF and satellite receiver inputs.
Rear of TV
KV-27FS12/27FS16/29FS12/29FS12C
9
Using the Remote Control and
Using the Remote Control and Basic Functions
15
SLEEP Turns the TV off automatically in
approximately 15, 30, 45, 60, 90, or 120 minutes. Cancel by pressing until SLEEP OFF appears.
MTS/SAP Cycles through the
Multi-channel TV Sound (MTS) options: Stereo, Mono, and Auto-SAP (Second Audio Programming).
DISPLAY Press once to show current time,
(if set) and channel number.
Cycles through available Steady Sound settings, (see page 23).
JUMP Alternates between the last two
channels selected with the
buttons.
GUIDE Brings up the custom guide of
your satellite receiver.
MENU Displays the on-screen menu.
Press again to exit the menu at any time.
RESET Press to return to factory settings
while in an on-screen menu.
CODE SET Use to program your remote
control to operate connected video equipment, (see page 36).
For information on Picture in Picture (PIP) operation buttons, see page 17.
If you lost your remote control, see page 40.
0 9
Basic Functions
This section shows you how to use the more advanced buttons on the remote control and how to use the on-screen menus.
Using the Remote Control
KV-27FS12/27FS16/29FS12/29FS12C
12
/
The remote control shown (RM-Y171) is for KV-27FV16. Your remote control may not look like the one illustrated.
Button Description POWER Press when you want to turn
FUNCTION Press when you want to control
MUTING Instantly turns off the sound.
SYSTEM OFF
TV/VIDEO Cycles through available video
ANT Press to change the VHF/UHF
TV/VTR Press when you are finished
PICTURE MODE
14
connectedequipmentonandoff.
connected equipment with your remote control.
Press again or press to restore sound.
Powers off all Sony equipment at once, (may not work with older equipment).
inputs.
input to the AUX input (KV-27FS16, KV-27FV16, KV-32FS16 only).
using a VCR and you want to switch to the TV input. Your VCR power will remain on.
Moves the cursor in the on­screen menus. Press the arrow buttons to move the cursor. Press the center button to select or access an option.
Cycles through the available Video Mode settings.
Other Information
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 dont 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).
Remotecontrol 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 whenusing 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
Troubleshooting
If you are having a problem with your TV, try the suggestions below. If the problem persists, contact your nearest Sony dealer.
13
No picture, no sound
Poor or no picture, good sound
Good picture, no sound
No color No signal
Dotted lines or stripes
Double images or ghosts
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.
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).
Press sothatMUTINGdisappearsfromthe screen (page 14).
Check your Audio settings. Your TV may be set to Auto-SAP (page 24).
Adjust Color in the Video menu (page 22).
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.
Adjust the antenna.
Move the TV away from other electronic equipment. Some electronic equipment can create electrical noise, which can interfere with TV reception.
Check your outdoor antenna or call your cable service.
KV-27FS12/27FS16/29FS12/29FS12C
39
KV-27FS12/27FS16/29FS12/29FS12C
2-1. REAR COVER REMOV AL
SECTION 2

DISASSEMBLY

Screw +BVTP 4x16
Screw +BVTP 4x16
Screw +BVTP 4x16
Screw +BVTP 4x16
Rear Cover
Screw +BVTP 4x16
Screw +BVTP 4x16
Screw +BVTP 4x16
2-2. CHASSIS ASSEMBL Y REMOVAL 2-3. SERVICE POSITION
HX Board
CA Board
CA Board
VA Board
VA Board
Claw
D Board
A Board
MA Board
P Board
K Board
MA Board
D Board
A Board
14
2-4. PICTURE TUBE REMOVAL
WARNING:
BEFORE REMOVING
THE ANODE CAP
KV-27FS12/27FS16/29FS12/29FS12C
1
10
High voltage remains in the CRT even after the power is disconnected. T o avoid electric shock, discharge CRT before attempting to remove the
9
8 7
anode cap. Short between anode and CRT coated earth ground strap.
6
5
Coated
Earth
Ground
Strap
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 CR T 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
6. Loosen the deflection yoke fixing screw and remove.
7. Place the set with the CR T face down on a cushion and remove the degaussing coil holders.
8. Remove the degaussing coils.
9. Remove the CRT grounding strap and spring tension devices.
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].
ANODE CAP REMOV AL
WARNING: High voltage remains in the CRT even after the power is disconnected. To avoid electrical shock, discharge the CRT before
NOTE: After removing the anode, short circuit the anode of the picture tube and the anode cap to either the metal chassis, CRT shield,
attempting to remove the anode cap. Short between anode and coated earth ground strap of CRT.
or carbon painted on the CRT.
REMOVAL PROCEDURES
c
b
a
Anode Button
1
Turn up one side of the rubber cap in the direction indicated by arrow
2
a
.
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
.
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.
15
KV-27FS12/27FS16/29FS12/29FS12C
SECTION 3

SET -UP ADJUSTMENTS

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: ST ANDARD
PICTURE control: ................ Normal
BRIGHTNESS control: ........ Normal
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.
Perform the adjustments in order as follows:
1. Beam Landing
2. Convergence
3. Focus
4. Screen (G2)
5. White Balance
Note: T est equipment required:
Color Bar Pattern Generator
Degausser
DC Power Supply
Digital Multimeter
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.
Purity Control
3. T urn 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
Disk magnets or rotatable disk magnets correct
these areas (a-d)
b
d
Purity control
corrects this area
ba
cd
Deflection yoke positioning
corrects these areas
a
16
c
KV-27FS12/27FS16/29FS12/29FS12C
3-2. CONVERGENCE
Before starting convergence adjustments:
1. Perform FOCUS, V.LIN AND V .SIZE adjustments.
2. Set BRIGHTNESS control to minimum.
3. Feed in dot pattern.
Vertical Static Convergence
1. Adjust V.STAT magnet to converge red, green and blue dots in the center of the screen (Vertical movement adjust V .STAT RV 701 to converge).
RGB
Center dot
RV701
V.STAT
R G B
V.STAT magnet
Horizontal Static Convergence
If the blue dot does not converge with the red and green dots, perform the following:
1. Move BMC magnet (a) to correct insufficient H. S tatic convergence.
2. Rotate BMC magnet (b) to correct insufficient V. Static convergence.
3. After adjusting the BMC magnet, repeat Beam Landing Adjustment.
V-STAT
BMC MAGNET
PURITY
2. T ilt the V.STAT magnet and adjust static convergence to open or close the V.STA T magnet.
When the V.STA T magnet is moved in the direction of arrows a and b, red, green, and blue dots move as shown below:
(1)
a
b
(2)
a
(3)
b
b
b
a
b
a
B
G
R
BGR
RGB
R
G
B
b
B
G
R
B
G
R
b
BMC magnet
Dynamic Convergence Adjustment
Before performing this adjustment, perform Horizontal and Vertical Static Convergence Adjustment.
1. Slightly loosen deflection yoke screw .
2. Remove deflection yoke spacers.
3. Move the deflection yoke for best convergence as shown on the following page.
17
KV-27FS12/27FS16/29FS12/29FS12C
BGR
RGB
BGR
R G B
B G
R
RGB
RGB
G
B
B
G
R
R G B
R
BGR RGB
4. Adjust XCV core to balance X axis.
5. Adjust YCH VR to balance Y axis.
6. Adjust vertical red and blue convergence with V.TIL T (TLV VR).
Note: Perform adjustments while tracking items 1 and 2.
Screen-Corner Convergence
1. Affix a permalloy assembly corresponding to the misconverged areas.
b
a
4. Tighten the deflection yoke screw.
5. Install the deflection yoke spacers.
TLH Plate Adjustment
1. Input crosshatch pattern.
2. Adjust PICTURE QUALITY to standard, PICTURE and BRIGHTNESS to 50%, and OTHER to standard.
3. Adjust the Horizontal Convergence of red and blue dots by tilting the TLH plate on the deflection yoke.
RV701
V.STAT
CA Board
VA Board
TLH Plate
XCV
YCH
TLV
a-d: screen-corner
d
c
3-3. FOCUS
1. Adjust FOCUS control for best picture.
ba
misconvergence cd
B R R B (R)(B) (B)(R)
TLH+ TLH-
(TLV)
Focus (FV)
Screen (G2)
18
KV-27FS12/27FS16/29FS12/29FS12C
r
3-4. SCREEN (G2)
1. Input a dots pattern.
2. Set the PICTURE and BRIGHTNESS controls at minimum and COLOR control at normal.
3. Adjust SBR T , GCUT, BCUT in service mode with an oscilloscope as shown below so that voltages on the red, green, and blue cathodes are 170 VDC.
Pedestal
Ground
170 VDC
4. Observe the screen and adjust SCREEN (G2) VR in FBT to obtain the faintly visible background of dot signal.
3-5. METHOD OF SETTING THE SERVICE
ADJUSTMENT MODE
Service Mode Procedure
1. Standby mode (power off).
3-6. WHITE BALANCE ADJUSTMENTS
1. Input an entire white signal with burst.
2. Set to Service Adjustment Mode.
3. Set the PICTURE and BRIGHTNESS to minimum.
4. Adjust with SBR T if necessary .
5. Select GCUT and BCUT with
6. Adjust with
and for the best white balance.
7. Set PICTURE and BRIGHTNESS to maximum.
8. Select GDRV and BDRV with
9. Adjust with
and for the best white balance.
10. To write into memory, press
and .
and .
then .
2.
Display Channel
5
Sound volume Powe
+
on the Remote Commander (press each button within a second).
Service Adjustment Mode In
1. The CR T displays the item being adjusted.
Disp.
Item
(Item)
Data
SERVICE HSIZ 0
2. Press or on the Remote Commander to select the item.
3. Press
or on the Remote Commander to change the
data.
4. Press
then to save into the memory.
Service Adjustment Mode Memory
Turn set off then on to exit service adjustment mode.
SERVICE WRITE
MUTING
ENTER
Green
Red
19
KV-27FS12/27FS16/29FS12/29FS12C
SECTION 4

SAFETY RELATED ADJUSTMENTS

4-1.
R564 CONFIRMATION METHOD (HV HOLD-DOWN CONFIRMATION) AND READJUSTMENTS
The following adjustments should always be performed when replacing the following components which are marked with
on
the schematic diagram:
Part Replaced ( )
DY , T505, CRT , IC501, C507, C520, C505, C509, C515, T504, T503, C551, L510, C546, C537, C547, D517, D518, D519, R560, R561, R562, R563, R565, R566,
R567, R525 ...................... .A Board
IC301.............................. MA Board
Adjustment (
HV HOLD-DOWN R564
)
Preparation Before Confirmation
1. Using a Variac, apply AC input voltage: 120-220 ± 2 VAC.
2. T urn the POWER switch ON.
3. Input a white signal and set the PICTURE and BRIGHTNESS controls to maximum.
4. Confirm that the voltage between C546 (+) or TP503 and ground is more than 21.0 VDC.
Hold-Down Operation Confirmation
1. Connect the current meter between Pin 1 1 of the FBT (T505) and the PWB land where Pin 11 would normally attach. (See Figure 1 on the next page.)
2. Input a dot signal and set PICTURE and BRIGHTNESS to minimum: IABL = 1730 ± 100 µA.
3. Confirm the voltage of A Board TP-600 is 135 ± 1.5 VDC.
4. Connect the digital voltmeter and the DC power supply via diode 1SS119 to C546 (+) and ground. (See Figure 1 on the next page.)
5. Increase the DC power voltage gradually until the picture blanks out.
6. T urn DC power source off immediately .
7. Read the digital voltmeter indication (standard < 24.78+0,-0.1 VDC).
8. Input a white signal and set PICTURE and BRIGHTNESS to maximum: IABL = 1730 ± 100 µA.
9. Repeat steps 4 to 7.
Hold-Down Readjustment
If the setting indicated in step 2 of Hold-Down Operation Confirmation cannot be met, readjustment should be performed by altering the resistance value of R564 component marked with
T505
FBT
ammeter
3.0 mA DC range
ABL
+
IABL
-
A
.
4-2. B+ VOLTAGE CONFIRMATION AND
ADJUSTMENT
Note: The following adjustments should always be performed when replacing the following components, which are marked with
on the schematic diagram on the A Board.
A BOARD: IC601, PH601
1. Using a Variac, apply AC input voltage: 130 ± 2 V AC.
2. Input a dot signal.
3. Set the PICTURE and BRIGHTNESS controls to minimum.
4. Confirm that the voltage of A Board TP-600 is <136.5 VDC.
5. If step 3 is not satisfied, replace the components listed above, then repeat steps 1–3.
20
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