Table Of Contents - Sony TRINITRON KV-A2121D Service Manual

TABLE OF CONTENTS
Section Title Page Section Title Page
1. GENERAL 4. CIRCUIT ADJUSTMENTS
1-1. TV Channel Presetting --:--ersereereeeeeeeeeseeeeeeeeeeeseeoes 4 4-1. A Board Adjustments ---+-+++e-eeseereeee eter seer eeeee ecco eees 25
1-2. Basic FUNCTIONS s+orreeeeeeseseceeeseceeescceenssceencceesseeres 6 4-2, B1 Board Adjustments 25
1-3. Special FUNCtIONS: ss tec teen cereccenececceenncccceenecenaccceses 6 4-3. D Board Adjustments Ove e eet e er eeeesccanncrves 26
1-4, Use of the Teletext Service -++---+eeecereeeteeeteereee tones 7 4-4. J1 Board Adjustments 27
1-5. Connections and Optional Functions
cerrereserrcccecceeeee 9 4-5. V Board
Adjustments Seema e merece mene ere ences eeeereseeeereucces
27
1-6. General Information sseesessesceececcccccccceseccccssescesscce 10 4-6. Secondary Adjustments Oem e ence cee ceca sens eneeteeneconennees 28
2. DISASSEMBLY 5. DIAGRAMS
2-1-1,
Rear Cover Removal (21 inch) <srrssssessseseseeeseeeeeeeees
12 5-1. Block Diagram-srrsssesseeeesesceeeesseeneeseeaerceeerenenereoes
29
2-1-2. Rear Cover Removal (25 inch, 29 inch)+:++++++++++++++86+ 12 5-2. Circuit Boards Location -++++++ss++seeeeeeseeeeeeeeneeeeeereres 33
2-2, Chassis Assembly Removal «-:sssssereesrserrreeeseeeeereces
12 5-3.
Printed Wiring Boards and Schematic Diagrams --:-+--
33
2-3, A and J1 Boards Removal
-ccecrsecsccceetecctcseeceeseeenee 13 5-4.
S@MICONAUCHOIS:++11e rte seeeeteeseneeeseteetecnnesecesesveroens
65
2-4, B1 and V Boards Removal «+s+s:essssereeescsceecsceceseenes 13
2-5, Service Position::::+reseerssseeeeseecsseececsececsenecensseceees 13
2-6-1. Picture Tube Removal (21 inch) +++-+ss+eeeeeseeeeeeeeeeees 14 «6. EXPLODED VIEWS
2-6-2. Picture Tube Removal (25 inch, 29 inch) -++++++++r+++++++ 15
6-1. Chassis (KV-A2121D) :ccccsesseeseesssteneeneeeersessuerioees 67
6-2, Picture Tube (KV-A2121D)--c-ceresteesssreeseeeeeeenersre aes 68
3. SET-UP ADJUSTMENTS
6-3. Chassis (KV-A2522D/A2921D) «--e+ssesesereeseseseese ees 69
6-4, -_ Picture Tube (KV-A2522D/A2921D) ---1+++s+eeerre eects eee 70
(21 inch, 25 inch)
3-1. Beam Landing 16
3-2. Convergence ::---
7 7. ELECTRICAL PARTS LIST --+s-+-reeseeeseeerees a
3-3. FOCUS «eeccceccccccenecccccsncccesennescenneeesseneeseesensseensases 19
3-4. Screen (G2) and White Balance -++++++++++++seseeeeeeeeeeee 19
(29 inch)
3-1. 21
3-2. 22
3-3. 24
3-4, 24
(CAUTION)
SHORT CIRCUIT THE ANODE OF THE PICTURE TUBE AND THE
ANODE CAP TOTHE 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 A ON THE
SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND INTHE PARTS
LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE
COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY.