QUADRO-3Y11CHASSIS

SERVICE MANUALColour Television PAL/SECAM/BG Models 14” CTV-37V10, 37V20, 37X10 (chasis 3011) 21” CTV-55V10, 55S10, 55X10, 55Z10 TO C UTI ON Bef\be se\fing the ch4\p13sis, ead the "X-Ray Radiati\bn Pecauti "Safety Pecauti\bn" and "P\bduct Safety | N\btice" \bn 2 \bf this manual the replacement tube must be the same type as the original including suffix letter. take necessary corrective action. -2- .14-16 Purity and Convergence Adjustment ----------------------------17 Control Location ---------------------------------------------------18 Input and Output Terminals----------------------------------------19 Operation Instructions------------------------------------------20-21 Mechanical Disassemblies----------------------------------------22 Cabinet parts List ---------------------------------------------------23 Circuit Diagram-----------------------------------------------------24 Safety Notice SAFETY PRECAUTIONS 1:An isolation transformer should be connected in the power line between the receiver and the AC line when a service is performed on the primary of the converter transformer of the set. high voltage adjustment for specific high voltage limit. X-RADIATION PRECAUTION The primary source of X-RADIATION in television receiver is the picture tube. and high voltage check to maintain the high voltage within the specified limits. adjustment covers or shields.control knobs. Carefully follow the instructions for +B1 volt power supply adjustment. inside the cabinet. The picture tube is specially constructed to limit X-RADIATION emissions. always be certain that all the protective devices are installed properly.Contents Safety Notice--------------------------------------------------------2 Technical specification--------------------------------------------3 Chassis Block Diagram--------------------------------------------4 IC Block Diagram -------------------------------------------------5-8 Transistor mark ----------------------------------------------------9 Chassis wiring diagram --------------------------------------------10 PCB Top/Bottom layer -------------------------------------------11-13 Service Adjustments ------------------------------------------. barriers.isolation resistor-capacitor networks etc.. 3:When replacing a chassis in the cabinet. No deviations fromresistance wattage or voltage ratings may be made for replacement items designated by mark ! . For continued X-RADIATION protection. Components indicated by mark ! in the parts list and the schematic diagram designate components in which safety can be of special significance. It is particularly recommended that only parts designated on the parts list in this manual be used for component replacement designated by mark ! . Before returning any television to the customer.the service technician must be sure that it is completely safe to operate without danger of electrical shock.such as. the high voltage must be maintained within specified limit. PRODUCT SAFETY NOTICE Product safety should be considered when a component replacement is made in any area of a receiver. If high voltage exceeds specfied limits. Excessive high voltage may produce potentially hazardous X-RADIATION. 2:Comply with all caution and safety-related notes provided on the cabinet back. Refer to this service manual. To avoid such hazards. on the chassis or the picture tube. C A R R I E R F R E Q U E N C Y : 4. S E C A M B G / D K ( O P T IO N ) . £ © 2¡ ¢ E C E I V E S Y S T E M£ º R D/K .1 A 0 . £ © 2 1 ¡ å9 0 W £ ¨M A X .FEATURES: AC 90V .0 MHz (I) 6.5V INPUT .m. E 5 .25MHz V H F-3 S 1 0 . C O LO R T U L. 10%TH D) 14¡¢S A F E T Y A U T H E N T I C AT I O N S TA N D A R D £ º C B 15¡ ¢L E D I N D IC A TO R S£ º POWER ON 16¡¢H A N D S E T T Y P E £ º HS08 17¡¢H A N D S E T P O W E R SU P LY £ º BATTERY 3V £¨U M -3/R6/AA £©x2 18¡¢C O L O U R P I C TU R E T U B E£ º 14"£-21" 90 DEGR EE TUBE 19¡¢R E M O T E C O N T R O L D IS TA N C E : ¡ Ý5 m 1¡ ¢P O W E R C O N S U M P T I O N £ º .2V P-P AV 75 O H M A U D I O IN ----0-2V (r.25MHz 9¡¢ T U N I N G SYST E M £ º V S T U N IN G 10¡¢ AV I N /O U T £ º 2 A V I N + 1 A V STEREO O U T 11¡ ¢ I N /O U T S P E C IF I C AT I O N£ º V I D E O IN ----1. E 2 . B/G . C H R O M A IF F R E Q U E N C Y PA L / N T SC : 34.m.E 4 . I .25-855. STA N D A R D .260V 50/60Hz M U L T I S Y S T E M : P A L B G / D K / I. S 1 .s ) 75 O H M V I D E O O U T----1. C H I LD L O C K 2 AV I N P U T G A M E ( O P TI O N ) 8 PAGES TELETEXT (OPTION) BLACK LEVEL STRETCH P R O G R A M V I EW F U N C T IO N F O U R P IC T U R E M O D E£ ºM I LD .5 MHz (B/G) 6.25MHz UHF E 2 1-E69 CH 471.E 1 2 CH 168.47/35.0¡À0.S 9 CH 46.2 V P-P A U D I O O U T----0-2V (r.s) 12¡¢O S D L A N G U A G E£ º E N G L IS H 13¡¢A U D I O O U T P U T P O W E R : > 3W (1KHz. C U ST O M .0 ¡À0.5 MHz (M) 5.9MHz 5 ¡¢ I N T E R .25-161. M 3¡¢C O L O U R SYSTEM : PA L/ SECAM / N T S C 4¡ ¢V I S IO N I N T E R M E D IA T E F R E Q U E N C Y £ º 38. N T S C M ( O P T I O N ) V O LTA G E S Y N T H E SI SE D T U N IN G S Y S T E M 100/256 PROG RAM S MEM ORY (OPTION) B L U E B A C K F U N CT I O N 120 MINUTES SLEEP TIMER FULL AUTO PROGRAM TIME ON C L O C K .25-463.5 MHz (D/K) 6. 0.D Y N A M I C G E N E R A L S PE C I F IC AT I O N : 1 4 ¡ å7 0 W £ ¨M A X .S 4 1 .32 MHz 7¡¢A N T E N N A T Y P E : D I N TY P E 75 OHM 8¡¢C H A N N E L S R E C E IV I N G : V H F . Chassis Block Diagram -4- . SIF.IC Block Diagram IC 201 (IIC BUS SINGLE CHIP VIF.VIDEO CHROMA) LA76810A/HA -5- . IC Block Diagram IC 402&IC 403 (3W AUDIO OUTPUT)LA 4285 EVR + - 1 INT 2 3 4 5V 5 6 + 7 + 8 9 + 10 + VCC PRE GND EXT INT/EXT EVR SM CONT D.C. PWR NF PWR GND RL 8 IC701 <TELETEXT> STV-5348 STTV/LFB FFB MA/SL POL L23 V DDD V DDA 5 CVBS 6 2 4 18 Data Clock 22 3 1 CBLK 28 VCR/TV 21 XTI CLAMPING SYNCHRONIZING DATA EXTRACTION DATA DECODING DATA PROCESSING Address Data CTRL 19 DV 20 TEST 24 XTO 23 V SSO 25 Address OSCILLATOR FREQUENCY SYNTHETIZER TIME BASE Data 8 PAGES MEMORY CTRL 12 BLAN 13 COR 8 RED 9 GREEN 10 BLUE 15 Y SCL 16 SDA 17 I C BUS INTERFACE 2 DISPLAY INTERFACE STV5348 7 V SSD 26 V SSA 27 TEST 11 RGB REF 14 ODD/EVEN -6- . P LATCH DRIVE REG.C 2 + Vth(1) Comp1 S 5 O.S.IC Block Diagram IC301 <Vertical Output> LA7840 PUMP UP THERMAL PROTECTION AMP - + GND NON INV.B T.C.OUTPUT 3 4 5 6 Vcc 7 1 D START O. O.S.V.INPUT OUTPUT STAGE Vcc INVERTINO INPUT IC602 <POWER > STR-G6653 4 VIN PUMP UP OUT 1 2 Ver.D + Comp2 Vth(2) 3 GND -7- .P/F. Q609.IC Block Diagram IC202 <SECAM> La7642 IC203.IC601&IC302<REGULATORS> L7800 SERIES INPUT 1 REFERENCE VOLTAGE SERIES PASS ELEMENT OUTPUT 2 CURRENT GENERATOR SOA PROTECTION STARTING CIRCUIT REFERENCE VOLTAGE ERROR AMPLIFIER THERRMAL PROTECTION GND 3 D613<PHOTO TRANSISTOR> TLP621 TLP621 1 2 1:ANODE 2:CATHODE 3:EMITTER 4:COLLECTOT 4 3 -8- . Transistor Mark PNP NPN PNP PNP A1015 NPN C1815 NPN C2717 C2482 E C D2499 A966 B E C B C2120 E C B E C B E C B B E C L780 9 L781 2 L780 5 INPUT GND OUTPUT INPUT GND OUTPUT INPUT GND OUTPUT B C E -9- . Chassis wiring diagram CN 406 CN 405 TO VIDEO IN TO AUDIO IN CN 401£¯ 402 TO SPEAKER CN 302 CN 301 TO CN301B FOCUS 1B 201 N 20 CN M C FRO CN 301B FROM CN 301 SCREEN CN 201B FROM CN 201 -10- CN 001 TO CONTROL CN 602 TO DEGAUSS CN 601 AC IN .