Sony TRINITRON KV-21PM2 User manual

SERVICE MANUAL BA-3 chassis
MODEL
KV-21PM2
COMMANDER
RM-Y146
DE$T r
MX
CHASSIS NU.
SCC-J95G-A
KV-21PS2
RM-Y145
MX
SCC-J95H-A
KV-21R22
RM-Y146
E
SCC-J94Q-A
KV-21R22C
RM-Y146
E
SCC-J94M-A
KV-21RD2
RM-Y146
E
SCC-J94R-A
KV-21RS22C
RM-Y145
E
SCC-J94L-A
KV-21RS50
RM-Y145
E
SCC-J94P-A
KV-21RS50C
RM-Y145
E
SCC-J94N-A
KV-21SD2
RM-Y145
E
SCC-J94S-A

SPECIFICATIONS
FOR ALL MODELS (except as noted)
Television system
Channel coverage
Antenna
Picture tube
Power requirements
Supplied accessories
American TV standard
VHF: 2-13
UHF: 14-69
CATV: 1-125
75£2, external antenna terminal
for VHF/UHF
Trinitron® tube
21-inch tube measured diagonally
120V, 60 Hz
220V, 50/60 Hz (KV-21R22C/
21RS22C/21RS50C only)
Size AA (R6) batteries (2)
Remote control RM-Y145 (1)
(KV- 21PS2/21RS22C/21RS50/
21RS50C/21SD2)
Remote control RM-Y 146 (1)
(KV-21PM2/21R22/21R22C/
21RD2)
Antenna dipole (1)
Antenna connector (1)
KV-21PM2/21R22/21R22C/21RD2
Output
Speaker output
Power consumption
Dimensions
(W/H/D)
Video (phono jacks): 1 Vp-p, 75£2
unbalanced negative sync
Audio (phono jacks)
500 mVrms (100% modulation)
Impedence: 47Q
A/V input (rear)
Headphone jack
1 speaker 2W (8Q)
90W when in use
6W in standby
8W in standby (KV-21R22C only)
522 x 477 x 471.7 mm
(20* 2 x 18 3 4 x 18 12 in.)
21.3 kg (46 lbs. 13 oz)
KV-21 PS2/21RS22C/21RS50/21RS50C/21SD2
put Video (phono jacks): 1 Vp-p, 75£2
unbalanced negative sync
Audio (phono jacks)
500mVrms (100% modulation)
Impedence: 47Q
A/V input (rear)
Output
Speaker output
Power consumption
Dimensions
(W/H/D)
Headphone jack
Audio out (KV-21RS50/21RS50C)
More than 800mVrms at max.
volume setting (variable)
More than 800mVrms (fix)
Impedence: 5K£2
2 speakers (2Wx2) 8£2
(KV-21PS2/ 21RS22C/21SD2 only,
2 speakers (3Wx2) 4£2
(KV-21RS50/21RS50C only)
90W when in use
7W in standby
8W in standby (KV-21RS22C/2IRS50C only)
522 x 477 x 471.7 mm (20 ,;2 x I8 y4 x 18 ,/2 in.)
(KV-21PS2/21RS22C/21SD2)
550 x464 x468.8 mm (21* 3 xl8 l/4 x 18‘ 2 in.)
(KV-21RS50/21RS50C only)
21.4 kg (47 lbs) (KV-21PS2/2IRS22C/21SD2)
23.4 kg (51 lbs, 8 oz) (KV-21RS50/21RS50C)
Design and specifications are subject to change without notice.
— 2 —

KV-21PS2/21RS22C/21RS50/21RS50C/21SD2 (RM-Y145)
KV-21PM2/21R22/21R22C/21RD2 (RM-Y146)
TABLE OF CONTENTS
Seci ion Title Page
1. GENERAL
Connecting the TV. 4
Using the Remote Control. 4
Setting Up Channels. 5
Watching the TV. 5
Using the Video Menu. 6
Additional Features. 6
Selecting Stereo or Bilingual Program(MTS). 6
Turning on Surround Sound. 7
Adjusting Treble, Bass and Balance. 7
Selecting a Caption Vision Option. 7
Customizing the Channel Number Buttons. 7
2. DISASSEMBLY
2-1. Rear Cover Removal. 8
2-2. A Board Removal. 8
2-3. Service Position. 8
2- 4. Picture Tube Removal. 9
3. SET-UP ADJUSTMENTS
3- 1 . Beam Landing. 10
3-2. Convergence. 11
3-3. Focus. 12
3-4. Screen (G2). 12
3-5. Method of Setting the Service Adjustment Mode. 12
3-6. White Balance Adjustments.. 12
Section Title Page
4. S AFETY RELATED ADJUSTMENT. 13
5. CIRCUIT ADJUSTMENTS
5-1. Electrical Adjustment by Remote Commander. 15
5- 2. A Board Adjustments. 17
6. DIAGRAMS
6- 1 . Block Diagrams. 19
6-2. Circuit Boards Location.22
6-3. Primed Wiring Boards and Schematic Diagrams.22
• A Board.23
• C Board.3 I
6- 4. Semiconductors.32
7. EXPLODED VIEWS
7- 1 . Chassis.33
8. ELECTRICAL PARTS LIST . 3 4
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.
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.
WARNING!
ATTENTION!!
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.
AFIN D’EVITER TOUT RESQUE D'ELECTROCUTION PROVENANT
D'UN CHASSIS SOUS TENSION, UN TRANSFORMATEUR
D’ISOLEMENT DOIT ETRE UTILISE LORS DE TOUT DEPANNAGE.
LE CHASSIS DE CE RECEPTEUR EST DIRECTEMENT
RACCORDE A L'ALIMENTATION SECTEUR.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK A ON
THE SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND INTHE
PARTS LIST ARE CRITICAL FOR SAFE OPERATION.
REPLACETHESE 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 AUX COMPOSANTS RELATIFS A LA SECURITE!!
LES COMPOSANTS IDENTIFIES PAR UNETRAME ET PAR UNE
MARQUE A 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 SUPPLE¬
MENTS 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.
— 3

KV-21PS2/21RS22C/21RS50/21RS50C/21SD2 (RM-Y145)
KV-21PM2/21R22/21R22C/21RD2 (RM-Y146)
Connecting a Camcorder • Connecting an Audio System * Using the Remote Control • Inserting Batteries • Changing the Menu Languag
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Warnings and Cautions • Connecting the TV • Connecting an Antenna • Connecting a Cable Box * Connecting a VCR
4

KV-21PS2/21RS22C/21RS50/21RS50C/21SD2 (RM-Y145}
KV-21PM2/21R22/21R22C/21RD2 {RM-Y146)
Setting up Your Channels • Setting Cable TV On or Off • Auto Programming • Erasing or Adding Channels
5

KV-21PS2/21RS22C/21RS50/21RS50C/21SD2 (RM-Y145}
KV-21PM2/21R22/21R22C/21RD2 (RM-Y146)
Using the VIDEO Menu • Adjusting the Video Settings
O)
6

KV-21PS2/21RS22C/21RS50/21RS50C/21SD2 {RM-Y145)
KV-21PM2/21R22/21R22C/21RD2 (RM-Y146)
Caption Vision • CHANNEL GUIDE • Listening with Headphones
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— 7 —

KV-21PS2/21RS22C/21RS50/21RS50C/21SD2 (RM-Y145)
KV-21PM2/21R22/21R22C/21RD2 (RM-Y146)
SECTION 2
DISASSEMBLY
2-1. REAR COVER REMOVAL
(3) Rear Cover
(BVTP4X16)
2-2. A BOARD REMOVAL
2-3. SERVICE POSITION

KV-21PS2/21RS22C/21RS50/21RS50C/21SD2 (RM-Y145)
KV-21PM2/21R22/21R22C/21RD2 (RM-Y146)
• REMOVAL OF THE ANODE-CAP
NOTE: 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.
• REMOVAL PROCEDURES
0 Turn up one side of the rubber cap in
the direction indicated by arrow ®.
@ Use your thumb to pull the rubber cap ®
firmly in the direction indicated by
arrow (§).
. HOW TO HANDLE AN ANODE-CAP
® Do not use sharp objects which may cause damage to the sur¬
face of the anode-cap.
@ Do not squeeze the rubber covering too hard to avoid damag¬
ing the anode-cap. A material fitting called a shatter-hook ter¬
minal is built into the rubber.
® Do not force turn the foot of the rubber cover. This may cause
the shatter-hook terminal to protrude and damage the rubber.
When one side of the rubber cap sepa¬
rates from the anode button, the anode-
cap can be removed by turning the rub¬
ber cap and pulling it in the direction of
arrow ©.
— 9 —

KV-21PS2/21RS22C/21RS50/21RS50C/21SD2 (RM-Y145)
KV-21PM2/21R22/21R22C/21R D2 (RM-Y146)
SECTION 3
SET-UP ADJUSTMENTS
• The following adjustments should be made when a
• Perform the adjustments in order as follows:
complete realignment is required or a new picture
tube is installed. These adjustments should be performed
1. Beam Landing
with rated power supply voltage unless otherwise noted.
2. Convergence
3. Focus
4.
Screen (G2) and White Balance
The controls and switch should be set as follows
unless otherwise noted:
Note: Test Equipment Required
PICTURE control.normal
1. Color Bar Pattern Generator
2. Degausser
BRIGHTNESS control.normal
3. DC Power Supply
4. Digital Multimeter
3-1. BEAM LANDING
Preparation:
• Feed in the white pattern signal.
• Before starting, degauss the entire screen.
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 in Fig.2.
3. Turn the raster signal of the pattern generator to
green.
4. Move the deflection yoke backward, and adjust with the
purity control so that green is in the center and red and
blue are at the sides evenly. (Fig.3)
purity control
5. M ove the deflection yoke forward, and adjust so that the
entire screen becomes green. (Fig.l)
Fig.3
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. When landing at the comer is not right, adjust by using
the disk magnets. (Fig.4)
Fig. 1
— 10 —
Fig.4