Sony Wega Trinitron KV-27FS13 User manual

TRINITRON®COLOR TELEVISION
SERVICE MANUAL BA-5 CHASSIS
MODEL NAME REMOTE COMMANDER DESTINATION CHASSIS NO.
9-965-911-01
KV-27FS13 RM-Y180 USA SCC-S40NA
KV-27FS13 RM-Y180 CND SCC-S41LA
KV-27FS17 RM-Y181 USA SCC-S40PA
KV-27FV17 RM-Y181 USA SCC-S40MA
KV-27FV17 RM-Y181 CND SCC-S41KA
KV-29FV17 RM-Y181 E SCC-S38XA
KV-29FV17C RM-Y181 E SCC-S38YA
KV-32FS13 RM-Y180 USA SCC-S40QA
KV-32FS13 RM-Y180 CND SCC-S41MA
KV-32FS17 RM-Y181 USA SCC-S40RA
KV-34FS13C RM-Y180 E SCC-S56DA
KV-34FS17 RM-Y181 E SCC-S56JA
RM-Y181
KV-27FV17 KV-27FS17
Self Diagnosis
Supported model

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KV-27FS13 27FS17 27FV17 29FV17 29FV17C 32FS13 32FS17 34FS13C 34FS17
TABLE OF CONTENTS
Specifi cations.......................................................................................................................................3
Warnings and Cautions........................................................................................................................4
Safety Check-Out.................................................................................................................................5
Self-Diagnostic Function......................................................................................................................
1. Disassembly
1-1. Rear Cover Removal.....................................................................................................................8
1-2. Chassis Assembly Removal..........................................................................................................8
1-3. Service Position ............................................................................................................................8
1-4. Picture Tube Removal ...................................................................................................................9
Anode Cap Removal Procedure...................................................................................................9
2. Set-Up Adjustments
2-1. Beam Landing...............................................................................................................................10
2-2. Convergence.................................................................................................................................11
2-3. Focus ............................................................................................................................................12
2-4. Screen (G2) ..................................................................................................................................12
2-5. Method of Setting the Service Adjustment Mode..........................................................................13
2- . White Balance Adjustments ..........................................................................................................13
3. Safety Related Adjustments
3-1.
X R5 4 Confi rmation Method (Hold Down Confi rmation) and Readjustments...........................14
3-2. B+ Voltage Confi rmation and Adjustment .....................................................................................14
4. Circuit Adjustments
4-1. Setting the Service Adjustment Mode...........................................................................................1
4-2. Memory Write Confi rmation Method .............................................................................................1
4-3. Remote Adjustment Buttons and Indicators .................................................................................1
4-4. MA Board Adjustments .................................................................................................................21
5. Diagrams
5-1. Circuit Boards Location.................................................................................................................23
5-2. Printed Wiring Board and Schematic Diagram Information ..........................................................24
5-3. Block Diagram and Schematics ....................................................................................................25
A Board ........................................................................................................................................31
BC Board......................................................................................................................................3
CA Board......................................................................................................................................39
D Board ........................................................................................................................................41
HA Board......................................................................................................................................43
HB Board......................................................................................................................................44
HX Board......................................................................................................................................44
K Board ........................................................................................................................................45
MA Board .....................................................................................................................................47
P Board ........................................................................................................................................52
VA Board ......................................................................................................................................53
5-4. Semiconductors ............................................................................................................................55
6. Exploded Views
-1. Chassis (KV-27FV17/29FV17/29FV17C ONLY) ...........................................................................5
-2. Picture Tube Removal (KV-27FV17/29FV17/29FV17C ONLY) .....................................................57
-3. Chassis (KV-27FS13/27FS17 ONLY) ...........................................................................................58
-4. Chassis (KV-32FS13/32FS17/34FS13C/34FS17 ONLY)..............................................................59
-5. Picture Tube Removal (KV-27FS13/27FS17/32FS13/32FS17/34FS13C/34FS17 ONLY) ............ 0
7. Electrical Parts List ...................................................................................................................................... 1
SECTION TITLE PAG E

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KV-27FS13 27FS17 27FV17 29FV17 29FV17C 32FS13 32FS17 34FS13C 34FS17
Television system
American TV Standard/NTSC
Channel coverage
VHF: 2-13/ VHF: 14- 9/ CATV: 1-125
Picture tube
Flat Trinitron
®
tube
Visible screen size
27-inch picture measured diagonally (KV-27FS13/27FS17/27FV17/29FV17/29FV17C ONLY)
32-inch picture measured diagonally (KV-32FS13/32FS17/34FS13C/34FS17 ONLY)
Actual screen size
29-inch measured diagonally (KV-27FS13/27FS17/27FV17/29FV17/29FV17C ONLY)
34-inch measured diagonally (KV-32FS13/32FS17/34FS13C/34FS17 ONLY)
Antenna
75 ohm external terminal for VHF/UHF
Supplied Accessories
Remote Commander RM-Y180 (KV-27FS13/32FS13/34FS13C ONLY)
Remote Commander RM-Y181 (KV-27FS17/27FV17/29FV17/29FV17C/32FS17/34FS17 ONLY)
Size AA (R ) batteries (2)
Optional Accessories
Connecting cables: VMC-810S/820S, VMC-720M,
YC-15V/30V, RK74A
U/V mixer EAC-
TV Stand: SU-27FD4 (KV-27FS13/ 27FS17/ 27FV17 ONLY)
TV Stand: SU-27FD3 (KV-29FV17/ 29FV17C ONLY)
TV Stand: SU-32FD3 (KV-34FS17/34FS13C ONLY)
TV Stand: SU-32FD4 (KV-32FS13/ 32FS17 ONLY)
SPECIFICATIONS
Design an specifi cations are subject to change without notice.
1) 1 Vp-p 75 ohms unbalanced, sync negative
2) Y: 1 Vp-p 75 ohms unbalanced, sync negative
C: 0.28 Vp-p (Burst signal), 75 ohms
3) 500 m Vrms (100% modulation), Impedance: 47 kilohms
4) More than 408 mVrms at the maximum volume setting (variable)
More than 408 mVrms (fi x); Impedance (output): 2 kilohms
5) Y: 1.0 Vp-p, 75 ohms, sync negative; P
B
: 0.7 Vp-p, 75 ohms
P
R
: Vp-p, 75 ohms
(
•
) SRS (SOUND RETRIEVAL SYSTEM)
The (
•
) SRS (SOUND RETRIEVAL SYSTEM) is manufactured by
Sony Corporation under license from SRS Labs, Inc. It is covered by U.S.
Patent No. 4,748, 9. Other U.S. and foreign patents pending.
The word ‘SRS’ and the SRS symbol (
•
) are registered trademarks of
SRS Labs, Inc. BBE and BBE symbol are trademarks of BBE Sound, Inc.
and are licensed by BBE Sound, Inc. under U.S. Patent No. 4, 38,258.
KV-27FV17/
29FV17 KV-29FV17C KV-27FS13 KV-27FS17 KV-32FS13 KV-34FS13C
KV-32FS17/
34FS17
Power requirements 120V, 60 Hz 220V, 50 Hz 120V, 60 Hz 120V, 60 Hz 120V, 60 Hz 220V, 50 Hz 120V, 60 Hz
Number of inputs/outputs
Video 1) 3333333
S Video 2) 2 211111
Audio 3) 3333333
Audio Out 4) 1111111
Y,PB, PR 5) 1111111
Monitor Out 1 1 -- -- -- -- --
Spea er output(W) 15W 2 15W 2 7.5W 2 7.5W 2 10W 2 10W 2 10W 2
Power Consumption(W)
In use(Ma ) 220W 210W 170W 180W 195W 195W 205W
In standby 1W 1W 1W 1W 1W 1W 1W
Dimensions(W/H/D)
(mm) 762 604 519 mm 762 604 519 mm 700 632 512 mm 762 604 519 mm 800 704 582 mm 700 632 512 mm 762 604 519 mm
(in) 30 23 7/8 20 1/2 in. 30 23 7/8 20 1/2 in. 275/8 25 201/4 in. 30 23 7/8 20 1/2 in. 31 1/2 27 3/4 23 in. 275/8 25 201/4 30 23 7/8 20 1/2 in.
Mass
(kg) 49 kg. 49 kg. 47 kg. 49 kg. 75 kg. 75 kg. 75 kg.
(lbs) 108 lbs. 108 lbs. 103 lbs. 10 oz. 108 lbs. 163 lbs. 163 lbs. 163 lbs.

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KV-27FS13/ 27FS17/ 27FV17/ 29FV17/ 29FV17C/ 32FS13/ 32FS17/ 34FS13C/ 34FS17
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 identifi ed by shading and ! mark on the schematic diagrams, e ploded 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 operation are identifi ed 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 la couche de carbone peinte sur le tube cathodique ou au blindage du tube cathodique.
Afi n d’eviter tout risque 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 du secteur.
! ATTENTION AUX COMPOSANTS RELATIFS A LA SECURITE!!
Les composants identifi es par une trame et par une marque ! sur les schemas de principe, les vues e plosees et les listes de
pieces sont d’une importance 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 par Sony. Les reglages de circuit dont
l’importance est critique pour la securite du fonctionnement sont identifi es dans le present manuel. Suivre ces procedures lors de
chaque remplacement de composants critiques, ou lorsqu’un mauvais fonctionnement suspecte.

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KV-27FS13/ 27FS17/ 27FV17/ 29FV17/ 29FV17C/ 32FS13/ 32FS17/ 34FS13C/ 34FS17
SAFETY CHECK-OUT
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 specifi ed 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 e posed metal parts for AC leakage. Check leakage
as described below.
Lea age Test
The AC leakage from any e posed metal part to earth ground and from
all e posed metal parts to any e posed metal part having a return to
chassis, must not e ceed 0.5 mA (500 microamperes). Leakage current
can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or
RCA WT-540A. Follow the manufacturers’ instructions to use these
instructions.
2. A battery-operated AC milliampmeter. 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
Simpson’s 250 and Sanwa SH-63TRD are e amples 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 cover-plate retaining
screw on most AC outlet bo es 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).
To E posed Metal
Parts on Set
0.15 F 1.5 K ΩAC
Voltmeter
(0.75 V)
Earth Ground
Trouble Light
AC Outlet Bo Ohmmeter
Cold-water Pipe
Figure A. Using an AC voltmeter to check AC leakage. Figure B. Checking for earth ground.

— 6 —
KV-27FS13/ 27FS17/ 27FV17/ 29FV17/ 29FV17C/ 32FS13/ 32FS17/ 34FS13C/ 34FS17
Detected Symptoms
SELF-DIAGNOSTIC FUNCTION
*If a +B overcurrent is detected, stoppage of the vertical defl ection is detected simultaneously. The symptom that is diagnosed fi rst by the
mircrocontroller is displayed on the screen.
**Refer to Screen (G2) Adjustments in Section 2-4. of this manual.
Display of Standby/Timer LED Flash Count
2 times
4 times
5 times
LED ON 0.3 sec.
LED OFF 0.3 sec. LED OFF
3 sec.
Diagnostic Item Flash Count*
+B Overcurrent 2 times
I-Prot 4 times
IK (AKB) 5 times
*One fl ash 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 fl ashing.
Self Diagnosis
Supported model
Standby/Timer LED
The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY/TIMER LED will automatically begin to fl ash. The number
of times the LED fl ashes translates to a probable source of the problem. A defi nition of the STANDBY/TIMER LED fl ash indicators is listed in the
instruction manual for the user’s 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 fl ash 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 fi rst of the problem areas.
Results for all of the following diagnostic items are displayed on screen. No error has occurred if the screen displays “0”.
Power does not turn on
+B overcurrent (OCP)*
I-Prot
IK (AKB)
Does not light
2 times
4 times
5 times
2:0 or 2:1
4:0 or 4:1
5:0 or 5:1
• Power cord is not plugged in.
• Fuse is burned out (F601). (A Board)
• H.OUT (Q502) is shorted. (A Board)
• IC702 is shorted. (CA Board)
• +13V is not supplied. (A Board)
• IC502 is faulty. (A Board)
• Viedo OUT (IC502) is faulty. (A Board)
• IC301 is faulty. (MA Board)
• Screen (G2) is improperly adjusted.**
No. of times
STANDBY/ TIMER
lamp fl ashes
Diagnostic Item
Description
Self-Diagnositc
Display/
Diagnostic Result
Probable Cause Location
• Power does not come on.
• No power is supplied to the TV.
• AC Power supply is faulty.
• Power does not come on.
• Load on power line is shorted.
• Has entered standby state after horizontal raster.
• Vertical defl ection pulse is stopped.
• Power line is shorted or power supply is stopped.
• No raster is generated.
• CRT Cathode current detection reference pulse
output is small.

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KV-27FS13/ 27FS17/ 27FV17/ 29FV17/ 29FV17C/ 32FS13/ 32FS17/ 34FS13C/ 34FS17
Self-Diagnostic Screen Display
For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be confi rmed, it is possible to bring up
past occurrences of failure on the screen for confi rmation.
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
Numeral “0” means that no fault was detected.
Numeral “1” means a fault was detected one time only.
SELF DIAGNOSTIC
2: 000
3: N/A
4: 000
5: 001
101: N/A
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:
Channel 8 ENTER
Quitting the Self-Diagnostic Screen
To quit the entire self-diagnostic screen, turn off the power switch on the Remote Commander or the main unit.
Self-Diagnostic Circuit
+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 defl ection pulse is detected by pin 5 of IC001 (MA Board). Power supply will shut down when waveform
interval e ceeds 2 seconds.
IK (AKB)
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).
Note that this differs from entering the Service Mode (Sound Volume + ).
MA BOARD
IC301
Y/CHROMA JUNGLE
A BOARD
IC502
V. OUT
MA BOARD
IC001
SYSTEM
MA BOARD
IC003
MEMORY
IK IN
FROM
CA BOARD
IC702 PIN 5
HP/PROTECT
SDA
A BOARD
FROM
IC501
PIN 3
33
IO-SDAT
O-LED
REF I-Prot
IO-BDAT
BDA
DISPLAY
36
61
35
43 22
42 5