Symphonic ST27S3 Service Manual Download Page 28 | Manualshive

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A1

A2

A3

A4

B1

B2

B3

B4

C1

C2

C3

C4

D1

D2

D3

D4

E1

E2

E3

E4

F1

F2

F3

F4

VIDEO SIGNAL

Main 1/4 Schematic Diagram

7-3

7-4

L6609SCM1

MAIN 1/4

Ref No.

Position

IC111

C-2

IC151

A-3

Q111

D-1

Q321

E-2

ICS

TRANSISTORS

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Summary of Contents for ST27S3

Page 1: ...27 COLOR TELEVISION WF2703 SERVICE MANUAL...

Page 2: ...aluate and advice the service trade of all con ceivable ways in which service might be done or of the possible hazardous consequences of each way Consequently Funai has not undertaken any such broad e...

Page 3: ...t limit specifications Description Condition Unit Nominal Limit 1 Intermediate Freq Picture Sound MHz MHz 45 75 41 25 2 Peak Picture Sens VHF CATV UHF dB v dB v dB v 15 15 15 30 30 40 3 AFT Pull In Ra...

Page 4: ...gs tied together and touch the other ohmme ter lead in turn to each tuner antenna input ex posed terminal screw and if applicable to the coaxial connector If the measured resistance is less than 1 0 m...

Page 5: ...he ground side of the AC power source To confirm that the AC power plug is inserted correctly with an AC volt meter measure between the chassis and a known earth ground If a voltage reading in excess...

Page 6: ...eplaced wires do not contact sharp edged or pointed parts H When a power cord has been replaced check that 5 6 kg of force in any direction will not loosen it I Also check areas surrounding repaired l...

Page 7: ...xposed accessible parts RF terminals an tenna terminals video and audio input and output ter minals microphone jacks earphone jacks etc is lower than or equal to the specified value in the table below...

Page 8: ...is fixed with glue to the CBA when removing entire flat pack IC first apply soldering iron to center of the flat pack IC and heat up Then remove glue will be melted Fig S 1 6 4 Release the flat pack...

Page 9: ...pins of the flat pack IC you can remove it easily Fig S 1 3 2 Affix the wire to a workbench or solid mounting point as shown in Fig S 1 5 3 While heating the pins using a fine tip soldering iron or ho...

Page 10: ...ccur due to a potential difference caused by electro static charge during unpacking or repair work 1 Ground for Human Body Be sure to wear a grounding band 1M that is prop erly grounded to remove any...

Page 11: ...ved unhooked un locked released unplugged unclamped or desoldered S Screw P Spring L Locking Tab CN Con nector Unhook Unlock Release Unplug or Desolder 2 S 2 two Screws S 2 5 Refer to the following Re...

Page 12: ...4 2 L6609DC Fig 1 S 1 S 4 S 2 1 Rear Cabinet S 1 S 1 S 1 Fig 2 S 1 S 1 S 1 S 1 S 1 S 1 S 4 S 2 S 1 1 Rear Cabinet 3 Main CBA Fig 3 Fig 4 4 CRT Anode Cap S 3 S 3 S 3 S 3 2 CRT CBA...

Page 13: ...CN801 CLN801 SP801 DG691 DEGAUSSING COIL MAIN CBA FLYBACK TRANSFORMER T571 AC601 AC CORD TU1 TUNER WH501B JK1501 WH301B FOCUS SCREEN WH501A WH301A TO CRT GROUND CN571 CN1501 CN802 CLN802 SP802 Fig 5...

Page 14: ...remote control CBA Fig 1 2 1 DC 120V Adjustment Purpose To obtain correct operation Symptom of Misadjustment The picture is dark and the unit does not operate correctly Note TP601 TP300 GND VR661 Mai...

Page 15: ...AST CNT becomes 84 COLOR CLR 1 Press MENU button on the Service remote con trol unit Then select COLOR CLR display 2 Press CH o p buttons on the Service remote control unit so that the value of COLOR...

Page 16: ...in power but ton on the TV unit 7 H Position Adjustment Purpose To obtain correct horizontal position of screen image Symptom of Misadjustment If H Position is incor rect horizontal position of image...

Page 17: ...D mode Display changes C D 7F FRENCH ACCESS CODE STEREO VIDEO TONE FM MODE and V OUT cyclically when VOL p button is pressed then press 1 The display will momen tarily show CUT OFF R R Red Now there...

Page 18: ...that Horizontal line is white If not Re adjust Cut off Adjustment until the Horizontal Line becomes pure white 10 Turn off and on again to return to normal mode Re ceive APL 100 white signal and Check...

Page 19: ...ct large areas of color may not be properly displayed 1 Set the unit facing east 2 Operate the unit for over 30 minutes before adjust ing 3 Fully degauss the unit using an external degauss ing coil 4...

Page 20: ...tating RB G C P Magnet See Fig 8 3 Fix the C P Magnets by tightening the Ring Lock 4 Remove the DY Wedges and slightly tilt the De flection Yoke horizontally and vertically to obtain the best overall...

Page 21: ...CTRL DG ON H 5V CTRL 5V CTRL2 8V CTRL FROM TO POWER SUPPLY BLOCK FROM TO CRT H V BLOCK PROTECT 2 PROTECT 1 PROTECT 3 P ON H P ON H KEY IN2 KEY IN1 RCV IN RCV101 IC151 MEMORY SCL 6 SDA 5 VOLUME 67 68...

Page 22: ...4 5MHz TRAP FM DET AF AMP 20 14 16 22 7 21 5 3 8 1 11 TU1 SF1 IF AGC SDA SCL EXT CLK 1 11 5 4 8 17 TU AUDIO MAIN CBA VIDEO SIGNAL RF IF SIGNAL AUDIO SIGNAL JK704 VIDEO IN WF16 WF6 TO AUDIO BLOCK IC11...

Page 23: ...EO SW L R DEMOD L R AMP LPF LPF X441 MATRIX STEREO IN L R AMP PILOT DET PHASE COMP 13 20 14 11 10 5 1 22 2 21 IC401 Q441 8V TU AUDIO IC481 INPUT SELECT SW CTL 13 3 12 11 1 4 9 10 FRONT TUNER FRONT TUN...

Page 24: ...1B WH501A VIDEO SIGNAL CN571 H OUTPUT H DRIVE B 15kHz TP302 GND TP1501 BLUE TP1502 X RAY TP591 TP592 Q1522 PROTECT 3 DEF B AMP 7 1 Q532 6 3 PULSE UP THERMAL PROTECTION SWITCHING P ON ON 5 SWITCHING SW...

Page 25: ...OF IC111 BACK UP PROTECT 1 TO PIN68 OF IC111 Q682 P ON 5V 5V CTRL FROM PIN28 OF IC111 Q683 P ON 5V 5V SWITCHING 5V SWITCHING 5V SWITCHING AL 9V Q321 9V SWITCHING Q675 SWITCHING P ON ON P ON H FROM PIN...

Page 26: ...wings for ordering The correct part number is shown in the parts list and may be slightly different or amended since these drawings were prepared 2 All resistance values are indicated in ohms K 103 M...

Page 27: ...ired units use only original replacement parts which are listed with their part numbers in the parts list section of the service manual 4 Wire Connectors 1 Prefix symbol CN means connector can disconn...

Page 28: ...2 A3 A4 B1 B2 B3 B4 C1 C2 C3 C4 D1 D2 D3 D4 E1 E2 E3 E4 F1 F2 F3 F4 VIDEO SIGNAL Main 1 4 Schematic Diagram 7 3 7 4 L6609SCM1 MAIN 1 4 Ref No Position IC111 C 2 IC151 A 3 Q111 D 1 Q321 E 2 ICS TRANSIS...

Page 29: ...K3 K4 L1 L2 L3 L4 VIDEO SIGNAL AUDIO SIGNAL 7 5 7 6 L6609SCM2 Main 2 4 Schematic Diagram MAIN 2 4 Ref No Position IC401 H 3 IC481 H 1 IC802 J 4 Q411 I 3 Q441 I 4 Q481 K 4 Q825 J 3 Q831 K 2 Q832 K 1 Q8...

Page 30: ...in 3 4 Schematic Diagram CAUTION Fixed voltage or Auto voltage selectable power supply circuit is used in this unit If Main Fuse F601 is blown check to see that all components in the power supply circ...

Page 31: ...T 2 TP592 U 2 TP601 U 2 Q531 S 2 CN571 T 3 Q532 S 2 WH301A V 2 VR561 U 3 Q551 T 3 WH501A V 3 VR562 U 3 Q552 T 3 Q553 U 2 TP300 U 2 Q561 U 3 TP302 V 2 Q571 U 2 TP591 U 2 TEST POINTS IC TRANSISTORS CONN...

Page 32: ...ixed voltage or Auto voltage selectable power supply circuit is used in this unit If Main Fuse F601 is blown check to see that all components in the power supply circuit are not defective before you c...

Page 33: ...ISOLATION TRANSFORMER IS REQUIRED NOTE The voltage for parts in hot circuit is measured using hot GND as a common terminal CAUTION FOR CONTINUED PROTECTION AGAINST RISK OF FIRE REPLACE ONLY WITH SAME...

Page 34: ...WF4 WF13 Q1532 Collector Q1532 Base WF5 GND TP1501 BLUE TP1502 7 15 BL6600F01013 2 7 16 CRT CBA Top View CRT CBA Bottom View CRT CBA Ref No Position Q1512 B 2 Q1522 B 1 Q1532 A 2 CN1501 A 2 WH301B B 1...

Page 35: ...F4 1DIV 2V 20 sec Q 1532 Base WF5 GND 1DIV 10V 20 sec Q 572 Collector WF7 GND 1DIV 5V 20 sec Q 571 Base WF8 1DIV 20V 20 sec Q1532 Collector WF13 1DIV 20V 20 sec Q 1512 Collector WF15 1DIV 0 2V 20 sec...

Page 36: ...01 AC601 1 2 3 4 5 1 2 3 4 5 CN571 5 4 3 2 1 WH301B GND RED GREEN BLUE V501 CRT ANODE L CH R CH 1 SP L 2 SP801 SPEAKER CN801 1 SP R 2 SP802 SPEAKER CN802 9 1 L6609WI T571 FBT TU1 TUNER UNIT WH501A WH5...

Page 37: ...32 FSC OUT Clock Output 3 58MHz 33 N U Not Used 34 N U Not Used 35 N U Not Used 36 N U Not Used 37 V RAMP F B V Ramp Feed Back 38 V RAMP OUT Vertical Output 39 V RAMP CAP V Ramp OSC Capacitor 40 8 7...

Page 38: ...Adjustment Judgement 73 AFT AFT Voltage Input 74 DG ON H Degaussing Coil Control 75 AGC AGC Voltage Input 76 PROTECT 3 Power Supply Protection 77 N U Not Used 78 FM SW Switching IF IC VCO 79 P ON H O...

Page 39: ...2 B2 B1 L1 L1 L1 L1 B1 B3 B4 B2 MAIN CBA See Electrical Parts List for parts with this mark V501 Scotch Tape 880 Scotch Tape 880 CRT CBA AC601 B7 PB1 DY551 B5 B5 L1 B4 SP801 CLN801 B6 L1 B4 SP802 CLN8...

Page 40: ...X1 TAPE X4 X3 X2 S4 S5 PACKING TAPE FRONT S2 S2 S3 S3 S1 X5 S6 Packing 11 3 L6601PEX...

Page 41: ...LE 1 FOR DETAILS OF MATCHING COMBINATION 2 DY551 DEFLECTION YOKE HAS MATCHING COMBINATION WITH V501 PLEASE SEE TABLE 1 FOR DETAILS OF MATCHING COMBINATION CRT TYPE A DY551 DEFLECTION YOKE ODY C29029 o...

Page 42: ...20030523 12 2 L6609CA CRT Warning Label Location CRT CRT Warning Label CRT Type No...

Page 43: ...ELECTROLYTIC CAP 4 7 F 50V M CE1JMASDL4R7 C113 CERAMIC CAP AX F Z 0 1 F 50V or CA1J104TU014 CERAMIC CAP AX F Z 0 1 F 50V CCA1JZT0F104 C114 FILM CAP P 0 001 F 50V J or CMA1JJS00102 FILM CAP P 0 001 F 5...

Page 44: ...MASTL470 ELECTROLYTIC CAP 47 F 35V M CE1GMASDL470 C562 ELECTROLYTIC CAP 470 F 25V M or CE1EMZNTL471 Ref No Description Part No ELECTROLYTIC CAP 470 F 25V M or CE1EMZNDL471 ELECTROLYTIC CAP 470 F 25V M...

Page 45: ...1CMASDL471 C822 ELECTROLYTIC CAP 470 F 16V M or CE1CMASTL471 ELECTROLYTIC CAP 470 F 16V M CE1CMASDL471 C827 ELECTROLYTIC CAP 100 F 16V M or CE1CMASTL101 ELECTROLYTIC CAP 100 F 16V M CE1CMASDL101 C831...

Page 46: ...E 1N4148 NDTZ001N4148 D672 PCB JUMPER D0 6 P5 0 JW5 0T D673 SWITCHING DIODE 1SS133 T 77 or QDTZ001SS133 SWITCHING DIODE 1N4148 NDTZ001N4148 Ref No Description Part No D681 ZENER DIODE MTZJT 779 1B or...

Page 47: ...02SC2785 TRANSISTOR 2SC2785 H or QQSH02SC2785 Ref No Description Part No TRANSISTOR 2SC2785 J or QQSJ02SC2785 TRANSISTOR KTC3199 GR or NQS10KTC3199 TRANSISTOR KTC3198 GR or NQS40KTC3198 TRANSISTOR 2SC...

Page 48: ...2 2k RCX4JATZ0222 R32 CARBON RES 1 4W J 390 RCX4JATZ0391 Ref No Description Part No R33 CARBON RES 1 4W J 270 RCX4JATZ0271 R34 CARBON RES 1 4W J 180 RCX4JATZ0181 R36 CARBON RES 1 4W J 10k RCX4JATZ010...

Page 49: ...10k RCX4JATZ0103 R564 CARBON RES 1 4W J 150k RCX4JATZ0154 R565 CARBON RES 1 4W J 22k RCX4JATZ0223 Ref No Description Part No R566 CARBON RES 1 4W J 8 2k RCX4JATZ0822 R568 CARBON RES 1 4W J 1k RCX4JATZ...

Page 50: ...RES 1 4W J 2 2k RCX4JATZ0222 R845 CARBON RES 1 4W J 2 2k RCX4JATZ0222 R846 CARBON RES 1 4W J 2 2k RCX4JATZ0222 Ref No Description Part No SWITCHES SW101 TACT SWITCH SKQSAB or SST0101AL038 TACT SWITCH...

Page 51: ...s of the following CAPACITORS C1501 CERAMIC CAP B K 1000pF 2KV or CCD3DKD0B102 CERAMIC CAP B K 1000pF 2KV or CCD3DKP0B102 CERAMIC CAP 1000pF 2KV CA3D102PAN04 C1502 ELECTROLYTIC CAP 47 F 16V M or CE1CM...

Page 52: ...Printed in Japan 2003 06 02 HO WF2703 L6609UK...

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