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27" COLOR TELEVISION

SRT2227W

SERVICE MANUAL

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Содержание SRT2227W

Страница 1: ...27 COLOR TELEVISION SRT2227W SERVICE MANUAL...

Страница 2: ...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 evaluat...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 8: ...Flat Pack IC about 5 to 6 seconds Fig S 1 1 2 Remove the flat pack IC with tweezers while ap plying the hot air 3 Bottom of the flat pack IC is fixed with glue to the CBA when removing entire flat pac...

Страница 9: ...n 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 IC from the CBA using twee zers Fig S 1 6 With Iron Wire 1 Using desoldering braid remove...

Страница 10: ...r from the foil of each pin of the flat pack IC on the CBA so you can install a replacement flat pack IC more easily 2 The I mark on the flat pack IC indicates pin 1 See Fig S 1 7 Be sure this mark ma...

Страница 11: ...d to remove any static electricity that may be charged on the body 2 Ground for Workbench Be sure to place a conductive sheet or copper plate with proper grounding 1M on the workbench or other surface...

Страница 12: ...ed unhooked un locked released unplugged unclamped or des oldered 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...

Страница 13: ...4 2 L2705DC Fig 1 S 1 S 1 S 1 S 1 S 4 S 2 1 Rear Cabinet Fig 2 S 1 S 1 S 1 S 1 S 1 S 1 S 4 S 2 S 1 1 Rear Cabinet Fig 3 3 Main CBA Fig 4 4 CRT Anode Cap S 3 S 3 S 3 S 3 2 CRT CBA...

Страница 14: ...ing Diagram ANODE Fig 5 FLYBACK TRANSFORMER T571 AC601 AC CORD CN801 CLN801 SP801 CLN802 SP802 CN802 CN691 MAIN CBA DG691 DEGAUSSING COIL TU11 TUNER WH301A WH501A CN571 JK1501 WH501B WH301B TO CRT GRO...

Страница 15: ...re normal remote control unit Part No N0138UD N0139UD or NE123UD Remove 3 Screws from the back lid Fig 1 1 2 Add J1 Jumper Wire to the remote control CBA Fig 1 2 How to set up the service mode Service...

Страница 16: ...p buttons on the service remote control unit so that the value of CONTRAS CNT becomes 84 CLR 1 Press MENU button on the service remote con trol unit Then select COLOR CLR display 2 Press CH o p button...

Страница 17: ...Purity Check 1 Enter the Service mode See page 5 1 2 Press 7 button on the remote control unit Each time pressing 7 button on the remote control unit display changes Red mode Green mode Blue mode and...

Страница 18: ...age Symptom of misadjustment If V Position is incor rect vertical height of image on the screen may not be properly displayed Note Use service remote control unit 1 Operate the unit for at least 20 mi...

Страница 19: ...CESS CODE SOUND TYPE VIDEO TONE FM MODE V OUT VIDEO AV MEMO STABLE SOUND FILTER 500 YUV MEMORY NO SIG BRT A MUTE POL and V MENU cycli cally when VOL p button is pressed then press 1 The display will m...

Страница 20: ...temperatures become 9200K x 286 y 294 3 Note Confirm that Cut Off Adj is correct after this adjustment and attempt Cut Off Adj if needed 16 Sub Brightness Adjustment Purpose To get proper brightness S...

Страница 21: ...nvergence of red green and blue beams Symptom of Misadjustment If Convergence Adjust ment is incorrect the edge of white letters may have color edges 1 Loosen the Ring Lock and align red with blue dot...

Страница 22: ...2 8V CTRL DG ON H 5V CTRL 5V CTRL2 8V CTRL TO POWER SUPPLY BLOCK TO CRT H V BLOCK PROTECT 2 PROTECT 1 PROTECT 3 P ON H KEY IN2 KEY IN1 RCV IN RCV101 IC151 MEMORY SCL 6 SDA 5 VOLUME 67 68 76 79 69 66 7...

Страница 23: ...IC111 TV MICON VIDEO AUDIO CHROMA DEFLECTION INPUT0 AFT IN TO SYSTEM CONTROL BLOCK 58 16 56 32 SCL SDA TO CRT H V BLOCK WH301A TO CRT H V BLOCK WH301B BLUE 5 GREEN 4 RED 3 53 46 45 38 37 ACL H DRIVE...

Страница 24: ...L R FILTER L R SAP SW SAP FILTER I2C DECORDER SAP DEMOD SAP OUT FILTER 29 30 TO IF VIDEO BLOCK 21 27 24 IC431 MTS SAP AUDIO SIGNAL PROCESS AUDIO IN L REAR JK711 SIF JK711 AUDIO IN R REAR OFFSET CANCEL...

Страница 25: ...501 CN1501 WH501B WH501A VIDEO SIGNAL CN571 H OUTPUT H DRIVE B X RAY TP591 TP592 PROTECT 3 DEF B AMP 7 1 Q512 6 3 PULSE UP THERMAL PROTECTION SWITCHING P ON ON 5 SWITCHING SWITCHING WF7 WF8 WF11 WF12...

Страница 26: ...P PROTECT 1 TO PIN68 OF IC111 Q682 P ON 5V 5V CTRL TO PIN28 OF IC111 5V SWITCHING 5V SWITCHING AL 9V Q321 9V SWITCHING Q674 SWITCHING P ON ON P ON H TO PIN79 OF IC111 HOT CIRCUIT BE CAREFUL FOR CONTIN...

Страница 27: ...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...

Страница 28: ...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...

Страница 29: ...1 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 L2705SCM1 MAIN 1 4 Ref No Position IC111 C 2 IC151 A 3 Q111 D 1 Q161 A 4 Q321 E 1 Q361 B 4 IC...

Страница 30: ...I2 I3 I4 J1 J2 J3 J4 K1 K2 K3 K4 L1 L2 L3 L4 VIDEO SIGNAL AUDIO SIGNAL 7 5 7 6 L2705SCM2 Main 2 4 Schematic Diagram MAIN 2 4 Ref No Position IC431 G 3 IC801 I 3 Q801 J 3 Q811 I 3 CN801 L 4 CN802 L 4...

Страница 31: ...own check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply Otherwise it may cause some components in the power supply circ...

Страница 32: ...Ref No Position IC551 S 3 CN571 T 3 WH301A V 2 Q511 S 2 WH501A V 3 Q512 S 2 Q547 U 2 TP591 U 2 Q551 T 3 TP592 U 2 Q552 T 3 TP601 U 2 Q561 U 3 Q571 U 2 VR561 U 3 Q572 T 2 VR562 U 3 TRANSISTORS CONNECTO...

Страница 33: ...01011 1 7 12 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 circuit are not...

Страница 34: ...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...

Страница 35: ...Q1521 Collector Q1521 Base WF4 WF13 Q1531 Collector Q1531 Base WF5 7 15 BL2700F01011 2 7 16 CRT CBA Top View CRT CBA Bottom View CRT CBA Ref No Position Q1511 A 2 Q1521 A 2 Q1531 A 2 CN1501 B 1 WH301...

Страница 36: ...Signal INITIAL POSITION Unplug unit from AC outlet for at least 5 minutes reconnect to AC outlet and then turn power on Brightness Center Color Center Tint Center Contrast Approx 70 1DIV 0 2V 20msec...

Страница 37: ...int Center Contrast Approx 70 WF1 WF16 Waveforms to be observed at Waveform check points Shown in Schematic Diagram 1DIV 200V 20 sec CN 571 Pin 1 WF9 GND 1DIV 5V 20 sec WH501A Pin 3 WF10 GND 1DIV 10V...

Страница 38: ...C601 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 T571 FBT TU11 TUNER UNIT WH501A WH501B 8V GND RED...

Страница 39: ...Input 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...

Страница 40: ...lance Adjustment Judgement 73 AFT IN 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 N U Not Used 79 P ON H Output...

Страница 41: ...Parts List for parts with this mark V501 Scotch Tape 880 Scotch Tape 880 CRT CBA DY551 L1 L1 B3 B4 L1 B2 MAIN CBA AC601 B3 B3 B3 B3 L1 B4 SP801 CLN801 B6 L1 B4 SP802 CLN802 B6 V501 2 V501 1 DY551 Det...

Страница 42: ...11 3 L2705PEX Packing S5 PACKING TAPE FRONT S1 X1 TAPE X4 X3 X2 S4 S2 S2 S3 S3 S6...

Страница 43: ...403887 S5 SERIAL NO LABEL L2705UF S6 HOLD PAD L6201UB 0EM407287 ACCESSORIES X1 BAG POLYETHYLENE 235X365XT0 03 0EM408420 X2 OWNER S MANUAL L2705UF ENGLISH SPAN ISH 0EMN02347 X3 REMOTE CONTROL 130 ERC00...

Страница 44: ...20040203 12 2 L2705CA CRT Warning Label Location CRT CRT Warning Label CRT Type No...

Страница 45: ...1JMASDL100 C111 ELECTROLYTIC CAP 47 F 16V M or CE1CMASTL470 ELECTROLYTIC CAP 47 F 16V M CE1CMASDL470 C112 ELECTROLYTIC CAP 4 7 F 50V M or CE1JMASTL4R7 ELECTROLYTIC CAP 4 7 F 50V M CE1JMASDL4R7 C113 CH...

Страница 46: ...LYTIC CAP 470 F 35V M VR or CE1GMZNTL471 ELECTROLYTIC CAP 470 F 35V M or CE1GMZADL471 ELECTROLYTIC CAP 470 F 35V M CE1GMZNDL471 Ref No Description Part No C511 ELECTROLYTIC CAP 100 F 10V M or CE1AMAST...

Страница 47: ...9 ELECTROLYTIC CAP 0 47 F 50V M or CE1JMASTLR47 ELECTROLYTIC CAP 0 47 F 50V M CE1JMASDLR47 C773 ELECTROLYTIC CAP 100 F 10V M or CE1AMASTL101 ELECTROLYTIC CAP 100 F 10V M CE1AMASDL101 Ref No Descriptio...

Страница 48: ...IODE FR154 or NDLZ000FR154 FAST RECOVERY DIODE ERB44 02 QDPZ0ERB4402 D654 SWITCHING DIODE 1SS133 T 77 or QDTZ001SS133 SWITCHING DIODE 1N4148 NDTZ001N4148 Ref No Description Part No D656 ZENER DIODE MT...

Страница 49: ...1015 Q552 TRANSISTOR 2SD1666R or QQER02SD1666 TRANSISTOR 2SD1666S or QQES02SD1666 Ref No Description Part No TRANSISTOR KTD2059 O or NQ400KTD2059 TRANSISTOR KTD2059 Y or NQ4Y0KTD2059 TRANSISTOR 2SD182...

Страница 50: ...5Z0471 Ref No Description Part No R162 CHIP RES 1608 1 10W J 10k RRXAJB5Z0103 R163 CHIP RES 1608 1 10W J 470 RRXAJB5Z0471 R164 CHIP RES 1608 1 10W J 10k RRXAJB5Z0103 R165 CHIP RES 1608 1 10W J 4 7k RR...

Страница 51: ...47 RCX4JATZ0470 R623 CARBON RES 1 4W J 39 RCX4JATZ0390 R630 CHIP RES 1608 1 10W J 120k RRXAJB5Z0124 Ref No Description Part No R631 CARBON RES 1 4W J 22k RCX4JATZ0223 R632 CHIP RES 1608 1 10W J 10k RR...

Страница 52: ...FH601 FUSE HOLDER MSF 015 or XH01Z00LY001 FUSE HOLDER FH V 03078 or XH01Z00DK001 Ref No Description Part No HOLDER FUSE CNT41 0014 1790424 FH602 FUSE HOLDER MSF 015 or XH01Z00LY001 FUSE HOLDER FH V 03...

Страница 53: ...2SC3619 QQ9Z02SC3619 RESISTORS R1501 CARBON RES 1 4W J 100 RCX4JATZ0101 R1502 CHIP RES 1608 1 10W J 100 RRXAJB5Z0101 R1503 CARBON RES 1 4W J 100 RCX4JATZ0101 R1510 METAL RESISTOR 3W J 10k or RN03103ZU...

Страница 54: ...Prinetd in Japan 2004 02 16 HO SRT2227W L2705UF...

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