Toshiba 27A14 Service Manual Download Page 3

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TABLE OF CONTENTS

SERVICING NOTICES ON CHECKING .....................................................................................

HOW TO ORDER PARTS ..........................................................................................................

IMPORTANT ...............................................................................................................................

TABLE OF CONTENTS ..............................................................................................................

GENERAL SPECIFICATIONS ....................................................................................................

DISASSEMBLY INSTRUCTIONS

1. REMOVAL OF ANODE CAP ...............................................................................................

2. REMOVAL AND INSTALLATION OF FLAT PACKAGE IC ................................................

SERVICE MODE LIST ................................................................................................................

CONFIRMATION OF HOURS USED .........................................................................................

WHEN REPLACING EEPROM (MEMORY) IC ..........................................................................

ELECTRICAL ADJUSTMENTS ..................................................................................................

BLOCK DIAGRAMS ...................................................................................................................

PRINTED CIRCUIT BOARDS

MAIN/CRT ................................................................................................................................

SCHEMATIC DIAGRAMS

MICON .....................................................................................................................................

CHROMA .................................................................................................................................

DEFLECTION ..........................................................................................................................

POWER ...................................................................................................................................

SOUND ....................................................................................................................................

TUNER/STEREO .....................................................................................................................

AV ............................................................................................................................................

CRT ..........................................................................................................................................

COMB/FILTER .........................................................................................................................

WAVEFORMS .............................................................................................................................

MECHANICAL EXPLODED VIEWS ...........................................................................................

MECHANICAL REPLACEMENT PARTS LIST .........................................................................

ELECTRICAL REPLACEMENT PARTS LIST ...........................................................................

A1-1

A2-1

A3-1~A3-5

B1-1

B2-1, B2-2

C1-1

D-1~D-5

E-1, E-2

F-1~F-4

G-1, G-2

G-3, G-4

G-5, G-6

G-7, G-8

G-9, G-10

G-11, G-12

G-13, G-14

G-15, G-16

G-17, G-18

H-1, H-2

I-1, I-2

J1-1

J2-1~J2-4

A2-1

Summary of Contents for 27A14

Page 1: ...SERVICE MANUAL COLOR TELEVISION 27A14 FILE NO 050 200413 ...

Page 2: ...which has the same character Especially as to the important parts for safety which is indicated in the circuit diagram or the table of parts as a mark the designated parts must be used 4 PUT PARTS AND WIRES IN THE ORIGINAL POSITION AFTER ASSEMBLING OR WIRING There are parts which use the insulation material such as a tube or tape for safety or which are assembled in the condition that these do not...

Page 3: ...PROM MEMORY IC ELECTRICAL ADJUSTMENTS BLOCK DIAGRAMS PRINTED CIRCUIT BOARDS MAIN CRT SCHEMATIC DIAGRAMS MICON CHROMA DEFLECTION POWER SOUND TUNER STEREO AV CRT COMB FILTER WAVEFORMS MECHANICAL EXPLODED VIEWS MECHANICAL REPLACEMENT PARTS LIST ELECTRICAL REPLACEMENT PARTS LIST A1 1 A1 1 A1 1 A2 1 A3 1 A3 5 B1 1 B2 1 B2 2 C1 1 C1 1 C1 1 D 1 D 5 E 1 E 2 F 1 F 4 G 1 G 2 G 3 G 4 G 5 G 6 G 7 G 8 G 9 G 10...

Page 4: ...V Tuning System F Synth Input Impedance VHF UHF 75 ohm 2 69 4A A 5 A 1 CH Coverage A I J W W 1 W 84 Intermediate Picture FP 45 75MHz Frequency Sound FS 41 25MHz FP FS 4 50MHz Preset CH No Stereo Dual TV Sound Yes Tuner Sound Muting Yes G 3 Power Power Source AC 120V AC 60Hz DC Power Consumption at AC 125 W at AC 120 V 60 Hz Stand by at AC 3 W at AC 120 V 60 Hz Per Year kWh Year Protector Power Fus...

Page 5: ...s On Off Timer Yes Color Stream DVD DTV Yes Control Level Yes Volume Yes Brightness Yes Contrast Yes Color Yes Tint Yes Sharpness Yes Tuning No Bass Yes Treble Yes Balance Yes Back Light No Stereo Audio Output SAP Yes Video Yes Color Stream Yes Channel TV Cable Yes CH Label Yes Game Timer Yes Sleep Timer Yes Sound Mute Yes V chip Rating Yes 16 9 No G 8 OSD Language English French Spanish G 9 Clock...

Page 6: ...s CH Up Yes CH Down Yes Volume Up Yes Volume Down Yes Cap Text TV Caption Text Yes 1 2 CH1 CH2 Yes TV Video TV AV Yes CH RTN Quick View Yes Sleep Yes RECall Call Yes Reset Yes Menu Enter Yes Mute Yes Exit Yes MTS Audio Select Yes Fav Up Yes Fav Down Yes 16 9 No Multi Brand Keys CH Up VCR No CH Down VCR No Pause Still No TV VCR VCR No FF No Rew No Rec No Play No Stop No TV No VCR No Cable No DVD No...

Page 7: ...er Max Time 120 Min Yes Energy Star No Favorite CH Yes Surround Yes 16 9 Mode No 2 Tuner P in P No G 12 Accessories Owner s Manual Language English French W Warranty Yes Remote Control Unit Yes Rod Antenna No Poles Terminal Loop Antenna No Terminal U V Mixer No DC Car Cord Center No Guarantee Card No Warning Sheet No Circuit Diagram No Antenna Change Plug No Service Facility List No Important Safe...

Page 8: ... Stream RCA x 3 Diversity No Ext Speaker No DC Jack 12V Center No VHF UHF Antenna Input F Type AC Outlet No G 14 Set Size Approx W x D x H mm 650 x 500 5 x 571 5 G 15 Weight Net Approx 36 5kg 80 5 lbs Gross Approx 40 5Kg 89 3 lbs G 16 Carton Master Carton No Content Sets Material Dimensions W x D x H mm x x Description of Origin No Gift Box Yes Material Double Brown Dimensions W x D x H mm 771 x 5...

Page 9: ...ed Flip up the sides of the Rubber Cap in the direction of the arrow and remove one side of the support Refer to Fig 1 2 2 DISASSEMBLY INSTRUCTIONS GND on the CRT Screwdriver Alligator Clip Support CRT GND on the CRT Rubber Cap CRT Support Fig 1 1 Fig 1 2 3 After one side is removed pull in the opposite direction to remove the other NOTE Take care not to damage the Rubber Cap INSTALLATION 1 Clean ...

Page 10: ...using a blower type IC desoldering machine Refer to Fig 2 2 2 Fig 2 2 NOTE Do not add the rotating and the back and forth directions force on the IC until IC can move back and forth easily after desoldering the IC leads completely When IC starts moving back and forth easily after desoldering completely pickup the corner of the IC using a tweezers and remove the IC by moving with the IC desoldering...

Page 11: ...2 8 Thin tip Soldering Iron NOTE When the IC leads are bent during soldering and or repairing do not repair the bending of leads If the bending of leads are repaired the pattern may be damaged So always be sure to replace the IC in this case Finally confirm the soldering status on four sides of the IC using a magnifying glass Confirm that no abnormality is found on the soldering position and insta...

Page 12: ...e 16 x 16 x hundreds digit value 16 x tens digit value ones digit value C 1 WHEN REPLACING EEPROM MEMORY IC If a service repair is undertaken where it has been required to change the MEMORY IC the following steps should be taken to ensure correct data settings while making reference to TABLE 1 Table 1 1 2 3 4 5 6 7 8 9 10 11 The unit will now have the correct DATA for the new MEMORY IC Enter DATA ...

Page 13: ...ust after performing CUT OFF adjustment 1 2 3 4 5 6 7 Place the set with Aging Test for more than 10 minutes Receive the gray scale pattern from the Pattern Generator Using the remote control set the brightness and contrast to normal position Activate the adjustment mode display of Fig 1 1 and press the channel button 12 on the remote control to select R CUT OFF Press the CH UP DOWN button on the ...

Page 14: ...33 on the remote control to select LEVEL Press the VOL UP DOWN button on the remote control until the AC voltmeter is 75 2mV 2 10 TRAPEZIUM 1 2 3 4 Receive the crosshatch signal from the Pattern Generator Using the remote control set the brightness and contrast to normal position Activate the adjustment mode display of Fig 1 1 and press the channel button 32 on the remote control to select TRAPEZI...

Page 15: ...ress the VOL UP DOWN button on the remote control until the contrast step No becomes 110 Receive a broadcast and check if the picture is normal Press the TV VIDEO button on the remote control to set to the AV mode Then perform the above adjustments 1 3 Press the TV VIDEO button on the remote control to set to the CS mode Then perform the above adjustments 1 3 2 15 TINT COLOR CENT 1 2 3 4 5 6 7 8 9...

Page 16: ...performing adjustments in section 3 1 1 2 3 4 5 Receive the green raster pattern from color bar generator Adjust the pair of purity magnets to center the color on the screen Adjust the pair of purity magnets so the color at the ends are equally wide Move the deflection yoke backward to neck side slowly and stop it at the position when the whole screen is green Confirm red and blue color Adjust the...

Page 17: ...S LOCATION GUIDE WIRING CONNECTION D 5 CP803 CP801B CP802B CD802 CP806 R803 R805 TP024 TP022 J801 W003 TP003 VR502 CP101 CP801A FB401 J705 J706 J707 CP802A TU001 VR401 CD801 CRT CRT CP401 CP501 CD501 AC IN CRT L503 CP502 CP1001 SPEAKER CRT PCB MAIN PCB ...

Page 18: ...BP IN H OUT ACL B OUT G OUT R OUT FSC OUT CVBS1 18 17 SCL SDA 40 YUV IN H OUT Q402 Q405 BLOCK DIAGRAM 46 CVBS4 SOUND AMP IC IC1001 AN17808B SPEAKER SP1001 2 5 L 12 R 7 11 SDA1 31 AFT 5 S_IN 10 13 12 11 19 14 44 48 53 VIDEO 3 Y IN U IN V IN 11 21 18 3 S INPUT 3 30 24 23 3 2 L R L R A V OUT AUDIO IN3 AUDIO IN 1 2 R L FBT FB401 SOUND B B 180V 25V 10 15 5 T501 6 3 HV 1 7 9 F 10 S SWITCHING Q502 IC504 ...

Page 19: ...8 IC1001 HS1001 R1009 W803 W136 W137 W130 C1005 W138 W072 W134 W060 C1518 C1510 L1505 L1503 L1502 L1508 C1520 C1501 C1502 L1511 C1528 L1510 C1525 W156 W858 W166 W077 W076 C001_1 L1501 C1532 W146 W145 C642 C605 D602 D601 R603 D603 W162 X602 C630 C627 C622 Q607 W075 W058 W070 W073 W108 W107 W030 C621 W061 W069 C618 W067 W090 C611 Q606 Q604 Q602 C610 R649 C603 W059 R616 W151 W150 W147 W144 W173 Q601 ...

Page 20: ...13 Q1001 R1003 R1011 R1004 R1010 C1010 C1012 Q709 R709 R006 IC1503 IC1502 C1512 C1516 R1529 R1528 R1505 Q1503 C1513 C1517 R1506 R1507 C1519 C1509 C1515 C1504 R1504 C1514 R1503 C1506 C1507 IC1501 C1503 R1502 C1521 C1508 R1508 Q1504 R1509 R1510 C1531 Q1508 R1530 C1505 Q1507 R1516 C1526 R1518 R1519 C1523 C641 R1520 C1533 R632 C136 C137 C138 C632 R618 C631 C624 C614 R610 C607 R617 C640 R628 Q603 R604 ...

Page 21: ...1_1 100CT8R005 8MHz SW101 EVQ21505R CH UP SW103 EVQ21505R VOL UP SW102 EVQ21505R CH DOWN SW104 EVQ21505R VOL DOWN SW105 EVQ21505R POWER D109 SLR 342VCT32 POWER ON CP101 173979 7 1 2 3 4 5 6 7 TM101 RC GQ010 BT001 R03 AB E_2P_G BT002 R03 AB E_2P_G Vout B GND OS101 RPM7138 WH5 1 2 3 IC101 OEC7090A MICON IC 1 10 11 12 13 14 15 16 17 18 19 2 20 21 22 23 24 25 26 27 28 29 3 30 31 32 33 34 35 36 37 38 3...

Page 22: ...16V YK D605 1SS133 D606 1SS133 D607 1SS133 D601 1SS133 D608 11E1 EIC Q603 KTC3875S_Y_RTK 6dB AMP Q607 KTC3203_Y AT 5V REG Q606 KTC3209_Y P CON 5V REG Q605 KTC3875S_Y_RTK 6dB AMP Q611 KTC3209_Y P CON 8V REG Q602 KTC3209_Y P CON 5V REG Q604 KTC3209_Y P CON 5V REG Q601 KTC3209_Y P CON 8V REG X602 100CT3R505 3 579545MHz CP802A B2013H02 7P 1 2 3 4 5 6 7 VIDEO_IN2 V_IN YUV VIDEO_IN1 U_IN YUV Y_IN YUV VI...

Page 23: ...WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST NOTE THE DC VOLTAGE AT EACH PART WAS MEASURED R443 150K 1 2W R457 4 7K 1 4W R462 10K R409_1 1K R437 1 1 2W R448 68K R417 39K R415 820 R430 68K 1 2W R427 820 1 2W R418 820 1 2W R406 470 1 2W R449 27K R461 1K R401 4 7K R456 5 6K 1 2W R458 1K R407 1 2K R428 100 1 4W R453 10K R432 8 2K 1 2W R429 560 1 2W R433 560 1 2W R421 560 1 2W R422 680 1 2W R403 1K...

Page 24: ...TESTER WHEN THE COLOR BROADCAST NOTE THE DC VOLTAGE AT EACH PART WAS MEASURED R535 3 9K 1 4W R516 10K R545 150 1 4W R510 100 1 4W R500 2 7M 1 2W 10 R553 15K 1 2W R540 1 2M 1 4W R539 1 2M 1 4W R508 100 1 4W R512 1K 1 2W R511 22K R533 270 R554 100K 1 2W R506 6 8K 1 4W R513 10K R505 10K 1 4W R507 82K 1 4W R547 100 1 4W R536 47K 1 4W R525 15K R524 3 3K 1 4W R515 10K 1 4W R520 1 5M 1 2W R546 100 1 4W R...

Page 25: ... 4W R314 220K R1011 12K R1004 15K R1003 15K R1013 10K R303 100 1 4W R304 100 1 4W R1010 12K R302 2 7K 1 4W R301 2 7K 1 4W C320 56P CH C322 56P CH C301 0 033 B C312 0 01 B C1005 220P B C334 1 B C311 0 1 B C315 0 1 B C303 0 01 B C310 0 033 B C313 0 01 B C307 0 015 B C309 0 039 B C1012 0 0047 B C1010 0 0047 B W832 W831 W803 W858 W834 W833 W835 C333 10 50V YK C308 10 50V YK C316 10 50V YK C306 100 16V...

Page 26: ...2 330 R006 100 R001 68K 1 2W R002 68K 1 2W R904 220 1 4W R905 56K 1 4W C912 0 022 B C908 0 022 B C911 0 047 B C913 0 1 B C917 0 1 B C915 0 1 B C918 0 1 B C005 0 1 F C002 0 1 B W819 W820 W829 W830 W812 D001 MTZJ33B C902 1 50V KA C901 1 50V KA C919 10 50V YK TUNER 5V TUNER_VIDEO P CON 8V B P CON 5V P CON B GND AFT SCL SDA J_AUDIO_OUT_L J_AUDIO_OUT_R SW_AUDIO_L SW_AUDIO_R J_AUDIO_OUT_L J_AUDIO_OUT_R ...

Page 27: ...URED R724 75 R701 560 1 4W R703 2 2K R702 220 1 4W R729 75 R726 1K R733 1K R727 75 R734 1K R728 1K R739 75 R705 3 3K R706 3 3K R709 270 R725 75 R736 75 R730 75 R708 1K R711 1K R710 1K 1 4W R704 1K R735 75 R721 68 R745 1K R746 1K C736 0 0056 B C738 0 0056 B C725 1 B C722 1 B C735 0 0056 B C737 0 0056 B C727 1 B C724 1 B C734 0 1 B C706 0 1 F C741 0 0056 B C742 0 0056 B C719 1 B C720 1 B D703 MTZJ12...

Page 28: ... R819 68 R816 390 R814 4 7K R818 68 R809 4 7K R813 390 R817 68 R802 2 7K 1 4W R806 2 7K 1 4W R804 2 7K 1 4W R801 220 R808 220 R810 220 R812 100 27 RED R821 100 R815 390 R811 4 7K R824 100 1 2W C810 390P B C811 390P B C802 0 001 2KV B C801 100P B C809 390P B C805_1 0 1 F W802 D802 1SS133 D801 1SS133 D803 1SS133 D812 1SS133 D810 1SS133 D811 1SS133 Q806 KTC4217 BLUE OUT Q801 KTC3199_Y RED GREEN OUT Q...

Page 29: ...0 1 2K C1533 22P CH C1521 0 1 B C1509 0 01 B C1513 0 1 B C1517 100P CH C1519 0 1 B C1531 0 01 B C1504 0 1 B C1505 1 B C1508 0 1 B C1515 0 1 B C1514 0 1 B C1516 0 1 B C1512 0 1 B C1506 0 1 B C1507 0 1 B C1503 0 1 B C1526 0 01 B C1523 0 1 F W848 C1530_1 47 16V KA C1510 100 6 3V YK C1528 100 16V YK C1501 100 6 3V YK C1502 100 6 3V YK C1518 1 50V KA C1520 100 6 3V YK C1525 100 6 3V YK C1535 10 16V KA ...

Page 30: ...e corresponding balloon number in the schematic diagram NOTE 2 1V 1µs div 3 1V 50µs div 4 1V 0 1ms div CHROMA 7 1V 20µs div 8 0 5V 10ms div 9 1V 50µs div 10 2V 20µs div 12 1V 2µs div 11 0 5V 20µs div 13 1V 20µs div 14 2V 20µs div 15 2V 20µs div 16 2V 5ms div DEFLECTION 17 20V 5ms div H 1 ...

Page 31: ...on number in the schematic diagram NOTE 18 10V 10ms div 19 20V 20µs div 20 2V 20µs div 21 200V 50µs div 37 50V 20µs div 38 50V 20µs div 39 50V 20µs div SOUND 22 2V 5ms div 23 2V 5ms div 24 2V 5ms div 25 2V 5ms div 26 5V 2ms div 27 5V 2ms div 28 200mV 20µs div 29 200mV 20µs div AV CRT H 2 ...

Page 32: ...9 109 PCB110 CRT PCB ASS Y MECHANICAL EXPLODED VIEW I 1 201 102B 102A 102B 102B 107 201 201 201 203 201 201 102 PCB010 MAIN PCB ASS Y 204 204 110 205 206 103 206 104 105 101A 101D 101B 101C 203 101E 203 101E 101E 203 108 203 203 101 ...

Page 33: ...MECHANICAL EXPLODED VIEW PACKING DIAGRAM I 2 118 119 120 TM101 116 112 114 111 115 115 113 113 ...

Page 34: ...0006755 SHEET CAUTION 109 AD300768 762WPA0009 HOLDER CRT WIRE 110 BZ710260 899HV3T000 HOLDER ANODE WIRE 111 AE004161 723000C615 SHEET BAR CODE 112 AD300432 791WHA0092 LAMIFILM BAG 113 AE003356 792WHAA091 PACKAGE TOP 114 AE003357 792WHAA092 PACKAGE BACK 115 AE003358 792WHAA093 PACKAGE BOTTOM 116 AE003359 793WCDC101 GIFT BOX 117 AE004163 A3N431N975 INSTRUCTION BOOK KIT 118 AE003390 JA4UD200 POLYBAG ...

Page 35: ...32 E5EZF3102M CE 1000 UF 25V C412 AD301599 P4N8FJ272H CMPP 0 0027UF 1 25KV C413 AD301977 E0ELF4102M CE 1000 UF 35V C418 AE001019 P4J7F3434J CMPP 0 43 UF 250V PMS C420 AD300723 P4N8FJ153H CMPP 0 015 UF 1 25KV C421 AD301600 P3N1F5223J CPP 0 022 UF 630V C425 BZ110182 C03L0R713K CC 0 001 UF 2KV R C426 BZ110225 E5EZFD220M CE 22 UF 250V C430 BZ110195 E02LU8220M CE 22 UF 100V C442 AD301601 E53FF56R8M CE ...

Page 36: ...LICON 1SS133T 77 D602 BZ410058 D97U08R21B DIODE ZENER MTZJ8 2B T 77 D603 BZ410094 D97U01501B DIODE ZENER MTZJ15B T 77 D604 AD300070 D97U01201B DIODE ZENER MTZJ12B T 77 D605 BZ410006 D1VT001330 DIODE SILICON 1SS133T 77 D606 BZ410006 D1VT001330 DIODE SILICON 1SS133T 77 D607 BZ410006 D1VT001330 DIODE SILICON 1SS133T 77 D608 BZ410043 D2WT011E10 DIODE SILICON 11E1 EIC D701 AD300070 D97U01201B DIODE ZEN...

Page 37: ...RANSISTOR SILICON KTC4217 O Y Q806 BZ510091 TCA0042170 TRANSISTOR SILICON KTC4217 O Y Q901 BZ510108 TAAA1504SY TRANSISTOR SILICON KTA1504S_Y_RTK Q902 BZ510108 TAAA1504SY TRANSISTOR SILICON KTA1504S_Y_RTK Q1001 BZ510068 TNAAJ05003 COMPOUND TRANSISTOR KRC111SRTK Q1503 BZ510109 TCAA3875SY TRANSISTOR SILICON KTC3875S_Y_RTK Q1504 BZ510109 TCAA3875SY TRANSISTOR SILICON KTC3875S_Y_RTK Q1507 BZ510109 TCAA...

Page 38: ...003P 2100 CP508 BZ614016 069W01001A CONNECTOR PCB SIDE 003P 2100 CP803 BZ614269 069S320010 CONNECTOR PCB SIDE A2361WV2 2P CP1001 AD301045 069S140419 CONNECTOR PCB SIDE A2502WV2 4P CP801A BZ614276 067U005049 WIRE HOLDER B2013H02 5P CP801B BZ614276 067U005049 WIRE HOLDER B2013H02 5P CP802A AD301997 067U007029 WIRE HOLDER B2013H02 7P CP802B AD301997 067U007029 WIRE HOLDER B2013H02 7P EL001 BZ614044 1...

Page 39: ...TOSHIBA CORPORATION 1 1 SHIBAURA 1 CHOME MINATO KU TOKYO 105 8001 JAPAN ...

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