KV-21XE42C - Sony TV Service Manual (repair manual)

kv-21xe42c service manual
Model
KV-21XE42C
Pages
41
Size
7.01 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kv-21xe42c.pdf
Date

Read Sony KV-21XE42C Service Manual online

 1 
KV-21XE40B
TRINITRON
®
 COLOR  TV
KV-21XE42C
SERVICE MANUAL
CHASSIS
BA-4
RM-Y155
KV-21XE42C
RM-Y155
   E
SCC-S06L-A
MODEL
COMMANDER
DEST.
CHASSIS NO.
 2 —
KV-21XE42C
SPECIFICATIONS
K V - 2 1 X E 4 2 C
Power Requirements 120V-220V, 50-60 Hz
Number of Inputs/Outputs
    Video 
1 )
2
    Audio 
2 )
2
Speaker Output (W) 4W  X 2
Power Consumption (W)
    In use (Max.) 105W
    In standby 3W
Dimensions (W/H/D) 610 x 464.5
    (mm) x 469.5 mm
    (in.) 24 x 18
  
x 18
1 / 2
Mass
    (kg) 20.6 kg
    (lbs) 45 lbs.
Television System
1)
 1 Vp-p 75 ohms unbalanced, sync negative
  PAL-M, PAL-N, NTSC 
2)
  500 mVrms (100% modulation), Impedance:  47 kilohms
Channel Coverage
  VHF:  2-13 / UHF:  14-69 / CATV:  1-125
Picture Tube
Design and specifications are subject to change
  Trinitron Tube
Visible Screen Size
  20-inch picture measured diagonally
Actual Screen Size
  21-inch picture measured diagonally
A n t e n n a
  75 ohm external terminal for VHF/UHF
Supplied Accessories
  Remote commander (w/2 size AA (R6) batteries)
      RM-Y155   
  Antenna Dipole 
  Antenna Connector
  Converter
 3 
KV-21XE42C
Warnings and Caution ..................................................... 4
Self-Diagnostic Function ................................................ 4
Safety Check Out Instructions ........................................ 7
1. GENERAL
1-1.  Instruction Manual - English Edition
Connecting the TV.......................................................8
Using the Remote Control ..........................................8
Setting Menu Language...............................................9
 Setting up your Channels............................................9
Watching the TV...........................................................9
Additional Features..................................................... 10
Troubleshooting...........................................................11
1-2.  Instruction Manual - Spanish Edition
Instalacion................................................................... 12
Uso del Control Remoto............................................. 12
Adjuste de Idioma de los Menus................................. 13
Programacion de Canales............................................ 13
Otras Funciones...........................................................14
Solucion de Problemas................................................ 15
2. DISASSEMBLY
2-1. Rear Cover Removal ..................................................... 16
2-2. A Board Removal ...................................................... 16
2-3. Service Position  ........................................................ 16
2-4. Picture Tube Removal ................................................... 17
..
3.  SET-UP  ADJUSTMENTS
3-1. Beam Landing............................................................. 18
3-2. Convergence............................................................... 19
3-3. Focus........................................................................... 20
3-4. Screen (G2)................................................................. 20
3-5. Method of Setting the Service Adjustment Mode....... 20
3-6. White Balance Adjustments........................................ 20
4.  SAFETY  RELATED  ADJUSTMENTS
.........................
21
5.  CIRCUIT  ADJUSTMENTS
5-1. Electrical Adjustment by Remote Commander........... 23
5-2. A Board Adjustments.................................................. 25
TABLE OF CONTENTS
Section Title Page
Section Title Page
 6.  DIAGRAMS
6-1. Block Diagrams.......................................................... 27
6-2. Circuit Boards Location.............................................. 30
6-3. Printed Wiring Boards and Schematic Diagrams .......30
A Board..................................................................... 33
C Board..................................................................... 39
6-4. Semiconductors........................................................... 41
 
7.  EXPLODED  VlEWS
7-1. Chassis ..........................................................................42
 
8.  ELECTRICAL  PARTS  LIST
A Board Parts List ...................................................... 43
C Board Parts List ...................................................... 49
Accessories and Packing Material ............................. 50
 4 —
KV-21XE42C
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 OPERATION 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 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.
WARNINGS  AND CAUTIONS
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.
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 occured if the the screen displays a "0" .
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
.
Diagnostic Item No. of times  Self-diagnostic display/ Probable Cause Detected Symptoms
Description STANDBY/TIMER Dia gnostic result Location
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 (F601) * No power is suppled to the TV. 
* AC power supply is faulty.
* +B overcurrent (OCP) 2 times 2:0 or 2:1 * H.OUT (Q502) is shorted.  (A board) * Power does not come on.
* IC1751 and Q1751 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)  * Has entered standby state after horizontal raster. 
* IC 541 is faulty (A board) * Vertical deflection pulse is stopped. 
* Power line is shorted or power supply is stopped.
* White balance failure 5 times 5:0 or 5:1 * Video OUT (Q392 to 394) is faulty.  (A board) * No raster is generated.
   (not balanced) * IC301 is faulty.  (A board) * CRT cathode current detection reference pulse 
* G2 is improperly adjusted. (Note 2)    output is small.
Page of 41

Download Sony KV-21XE42C Service Manual (Repair Manual)

Here you can read online and download Sony KV-21XE42C Service Manual in PDF. KV-21XE42C service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony KV-21XE42C TV. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.