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KV-29AL40/KV-29AL40A/KV-29AL40C
SERVICE MANUAL
BA-4 CHASSIS
MODEL
KV-29AL40
KV-29AL40A
KV-29AL40C
COMMANDER
DEST.
CHASSIS NO.
RM-Y165 E SCC-S06J-A
RM-Y165 E SCC-S06H-A
RM-Y165 E SCC-S06K-A
KV-29AL40
RM-Y165
TRINITRON® COLOR TV
1
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KV-29AL40/KV-29AL40A/KV-29AL40C
SPECIFICATIONS
Power requirements
Number of inputs/outputs:
Video 1)
S Video 2)
Audio 3)
Audio Out 4)
Monitor Out
Speaker output (W)
Power Consumption (W):
In use (max.)
In standby
Dimensions (W/H/D):
(mm)
(in.)
Mass:
(kg.)
(lbs.)
KV29AL40
120V,60Hz
2
2
1
10W x 2
170W
2W
KV29AL40A
KV-29AL40C
220V, 50/60Hz
2
2
1
10W x 2
170W
3W
660.4 x 598
x 505.5mm
26 x 231/2
x 20in
660.4 x 598
x 505.5mm
26 x 231/2
x 20in
42kg
92 lbs. 8 oz.
42kg
92 lbs. 8 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) 500 mVrms (100% modulation), Impedance: 47 kilohms
4) More than 408 mVrms at the maximum volume setting (variable)
Television system
American TV standard (all models except KV-29AL40A)
PAL-M, PAL-L, NTSC (KV-29AL40A only)
Channel coverage
VHF:2-13/UHF:14-69/CATV:1-125
Visible screen size
29-inch picture measured
Actual screen size
29-inch picture measured
Antenna
75 ohm external terminal for VHF/UHF
Supplied Accessories
Remote commander (including 2 size AA (R6) batteries)
RM-Y165
Optional Accessory
Connecting Cables:
VMC-810S/820S, VMC-720M, YC-15V/30V
TV Stand SU-27A3
VHF, UHF Mixer EAC-66
( ) ® SRS (SOUND RETRIEVAL SYSTEM)
The ( ) SRS (SOUND RETRIEVAL SYSTEM) is manu-
factured by Sony Corporation under license from SRS Labs,
Inc. It is covered by U.S. Patent No. 4,748,669. 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. 4,638,258 and 4,482,866.
Design and specifications are subject to change without notice.
2—
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KV-29AL40/KV-29AL40A/KV-29AL40C
TABLE OF CONTENTS
Section
Title Page
Warnings and Caution ............................................................ 4
Self-Diagnostic Function ........................................................ 4
Safety Check Out Instructions ................................................ 7
1. GENERAL (in Spanish)
Connecting and Installing the TV ....................................... 8
Using the Remote Control .................................................. 8
Programming the Channels ................................................ 9
Watching the TV ................................................................. 9
Other Functions .................................................................. 9
Using the Audio Menu ..................................................... 11
Troubleshooting ................................................................ 11
2. DISASSEMBLY
2-1. Rear Cover Removal ................................................. 12
2-2. Control Switch Removal ........................................... 12
2-3. Chassis Assembly Removal ....................................... 12
2-4. Service Position ......................................................... 12
2-5. Picture Tube Removal ............................................... 13
3. SET-UP ADJUSTMENTS
3-1. Beam Landing ........................................................... 14
3-2. Convergence .............................................................. 15
3-3. Focus ......................................................................... 16
3-4. Screen (G2) ................................................................ 16
3-5. Method of Setting the Service Adjustment Mode ..... 16
3-6. White Balance Adjustments ...................................... 16
Section Title Page
4. SAFETY RELATED ADJUSTMENTS ......................... 17
5. CIRCUIT ADJUSTMENTS
5-1. Electrical Adjustment by Remote Commander ......... 19
5-2. A Board Adjustments ................................................. 22
6. DIAGRAMS
6-1. Block Diagrams ......................................................... 25
6-2. Circuit Boards Location ............................................ 28
6-3. Printed Wiring Boards and Schematic Diagrams ...... 28
• A Board ...................................................................... 29
• CV Board ................................................................... 37
• K Board ..................................................................... 38
• E Board ...................................................................... 40
• HT Board ................................................................... 40
• HV Board ................................................................... 41
• HZ Board ................................................................... 42
6-4. Semiconductors ......................................................... 43
7. EXPLODED VlEWS
7-1. Chassis ....................................................................... 44
7-2. Main Power Switch ................................................... 45
(KV-29AL40A only)
8. ELECTRICAL PARTS LIST ........................................ 46
3
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KV-29AL40/KV-29AL40A/KV-29AL40C
WARNINGS AND CAUTIONS
CAUTION!
ATTENTION
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 OPERATION ARE IDENTIFIED
IN THIS MANUAL. FOLLOW THESE PROCEDURES
WHENEVER CRITICAL COMPONENTS ARE REPLACED
OR IMPROPER OPERATION IS SUSPECTED.
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 PAR SONY.
LES REGLAGES DE CIRCUIT DONT L'IMPORTANCE 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 STANDBY/TIMER lamp will automatically begin to
flash. The number of times the lamp flashes translates to a probable source of the problem. A definition of the STANDBY/TIMER lamp
flash 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.
1. DIAGNOSTIC TEST INDICATORS
When an error occurs, the STANDBY/TIMER lamp will flash a set number of times to indicate the possible cause of the problem. If there
is more than one error, the lamp 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".
Diagnostic Item
Description
No. of times Self-diagnostic display/
STANDBY/TIMES Diagnostic result
Probable Cause
Location
Detected Symptoms
lamp flashes
• Power does not turn on
Does not light
• Power cord is not plugged in.
• Power does not come on.
• Fuse is burned out (F5050). (E Board) • No power is supplied to the TV.
• +B overcurrent (OCP)
2 times
2:0 or 2:1
• H.OUT (Q502) is shorted. (A Board)
• AC power supply is faulty.
• Power does not come on.
• IC1701, Q946, Q947 is shorted. (C Board) • Load on power line is shorted.
• Vertical deflection stopped
4 times
4:0 or 4:1
• +13V is not supplied. (A Board)
• IC 541 is faulty (A Board)
• Has entered standby state after
horizontal raster.
• Vertical deflection pulse is stopped.
• Power line is shorted or power
• White balance failure
5 times
5:0 or 5:1
• Video OUT (Q306, Q307, Q308) is
supply is stopped.
• No raster is generated.
(not balanced)
faulty. (A Board)
• CRT cathode current detection
• IC301 is faulty. (A Board)
• G2 is improperly adjusted. (Note 2)
Note 1: If a +B overcurrent is detected, stoppage of the vertical deflection is detected simultaneously.
The symptom that is diagnosed first by the microcontroller is displayed on the screen.
Note 2: Refer to Screen (G2) Adjustment in Section 3-4 of this manual.
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KV-29AL40/KV-29AL40A/KV-29AL40C
2. DISPLAY OF STANDBY/TIMER LIGHT FLASH COUNT
2 times
4 times
5 times
Lamp ON 0.3 sec.
Lamp OFF 0.3 sec.
Lamp OFF
3 sec.
STANDBY/SLEEP lamp
Diagnostic Item
+B overcurrent
Vertical deflection stopped
White balance failure
Flash Count*
2 times
4 times
5 times
* One flash count is not used for self-diagnostic.
3. STOPPING THE STANDBY/TIMER 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.
4. 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 for confirmation on the screen:
[To Bring Up Screen Test]
In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below:
Screen display / Channel 5 / Sound volume / Power ON
˘
Note that this differs from entering the service mode (sound volume + ).
Self-Diagnostic screen display:
SELF DIAGNOSTIC
2: 0 <-------------Numeral "0" means that no fault has been detected.
3: N/A 0
4: 0
5: 1 <-------------Numeral "1" means a fault has been detected one time only.
101: N/A 0
5. 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 as shown below when the diagnostic screen is being
displayed.
Channel 8 / ENTER
[Quitting Self-diagnostic screen]
To quit the entire self-diagnostic screen, turn off the power switch on the remote commander or the main unit.
5
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