Toshiba 27A50 Скачать руководство пользователя страница 27

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GENERAL ADJUSTMENTS

SPECIFIC INFORMATIONS

Location

No.

Part No.

Description

Location

No.

Part No.

Description

RY14

24366102

CF, 1k ohm

RY15

24366273

CF, 27k ohm

RY16

24872102

Chip, 1k ohm, 1/16W

RY17

24872102

Chip, 1k ohm, 1/16W

RY18

24872102

Chip, 1k ohm, 1/16W

RY21

24872301

Chip, 300 ohm, 1/16W

RY22

24872104

Chip, 100k ohm, 1/16W

RY23

24872474

Chip, 470k ohm, 1/16W

RY24

24872153

Chip, 15k ohm, 1/16W

RY26

24872152

Chip, 1500 ohm, 1/16W

RY27

24872223

Chip, 22k ohm, 1/16W

RY28

24872333

Chip, 33k ohm, 1/16W

RY29

24872333

Chip, 33k ohm, 1/16W

RY30

24872104

Chip, 100k ohm, 1/16W

RY31

24872223

Chip, 22k ohm, 1/16W

RY34

24872102

Chip, 1k ohm, 1/16W

RY36

24872471

Chip, 470 ohm, 1/16W

RY38

24872361

Chip, 360 ohm, 1/16W

RY41

24872471

Chip, 470 ohm, 1/16W

RY45

24872101

Chip, 100 ohm, 1/16W

RY48

24872223

Chip, 22k ohm, 1/16W

RY61

24872102

Chip, 1k ohm, 1/16W

RY62

24872152

Chip, 1500 ohm, 1/16W

RY63

24872102

Chip, 1k ohm, 1/16W

RY65

24872152

Chip, 1500 ohm, 1/16W

RY68

24872102

Chip, 1k ohm, 1/16W

RY69

24872122

Chip, 1200 ohm, 1/16W

RY70

24872272

Chip, 2700 ohm, 1/16W

RY71

24872102

Chip, 1k ohm, 1/16W

RY72

24872102

Chip, 1k ohm, 1/16W

RY75

24872472

Chip, 4700 ohm, 1/16W

RY77

24872102

Chip, 1k ohm, 1/16W

RY78

24872102

Chip, 1k ohm, 1/16W

RY80

24872473

Chip, 47k ohm, 1/16W

RY81

24872124

Chip, 120k ohm, 1/16W

RY82

24872333

Chip, 33k ohm, 1/16W

RY85

24872471

Chip, 470 ohm, 1/16W

RY86

24872101

Chip, 100 ohm, 1/16W

RY87

24872101

Chip, 100 ohm, 1/16W

RY88

24872101

Chip, 100 ohm, 1/16W

RY89

24872102

Chip, 1k ohm, 1/16W

RY90

24872102

Chip, 1k ohm, 1/16W

RY91

24872100

Chip, 10 ohm, 1/16W

RY92

24872102

Chip, 1k ohm, 1/16W

RY93

24872102

Chip, 1k ohm, 1/16W

RY94

24872101

Chip, 100 ohm, 1/16W

RY95

24872101

Chip, 100 ohm, 1/16W

RY96

24872105

Chip, 1M ohm, 1/16W

RY97

24872102

Chip, 1k ohm, 1/16W

RY98

24872223

Chip, 22k ohm, 1/16W

RY99

24872683

Chip, 68k ohm, 1/16W

RZ01

24872102

Chip, 1k ohm, 1/16W

RZ02

24872102

Chip, 1k ohm, 1/16W

RZ03

24872332

Chip, 3300 ohm, 1/16W

RZ04

24872122

Chip, 1200 ohm, 1/16W

RZ05

24872471

Chip, 470 ohm, 1/16W

RZ06

24872821

Chip, 820 ohm, 1/16W

RZ08

24872122

Chip, 1200 ohm, 1/16W

RZ09

24872101

Chip, 100 ohm, 1/16W

RZ10

24872471

Chip, 470 ohm, 1/16W

RZ12

24872332

Chip, 3300 ohm, 1/16W

RZ13

24872122

Chip, 1200 ohm, 1/16W

RZ14

24872821

Chip, 820 ohm, 1/16W

RZ15

24872821

Chip, 820 ohm, 1/16W

RZ17

24872471

Chip, 470 ohm, 1/16W

RZ18

24872122

Chip, 1200 ohm, 1/16W

RZ19

24872332

Chip, 3300 ohm, 1/16W

RZ20

24872101

Chip, 100 ohm, 1/16W

RZ22

24872471

Chip, 470 ohm, 1/16W

RZ29

24872331

Chip, 330 ohm, 1/16W

RZ30

24366102

CF, 1k ohm

RZ30

24872331

Chip, 330 ohm, 1/16W

COILS & TRANSFORMERS

L101

23289220

Coil, Peaking, TRF4220AF

L301

23103880

Coil (Ferrite Bead), TEM2011Y

L400

23238714

Coil, Peaking, TRF4100AJ

* L441

23233072

Coil, Linearity, TLN2115G

L501

23289844

Coil, Peaking, TRF4470AT

L805

23248227

Coil, Choke, TLN3481AD

L806

23248227

Coil, Choke, TLN3481AD

L815

23103880

Coil (Ferrite Bead), TEM2011Y

L883

23103880

Coil (Ferrite Bead), TEM2011Y

L885

23248073

Coil, Choke, TLN3299D

L886

23103880

Coil (Ferrite Bead), TEM2011Y

L901

23200789

Coil, Degaussing, TSB-2205A

L902

23289221

Coil, Peaking, TRF4221AF

L903

23289221

Coil, Peaking, TRF4221AF

L904

23289221

Coil, Peaking, TRF4221AF

L910

23237991

Coil, Peaking, TRF4479AC

LA01

23289100

Coil, Peaking, TRF4100AF

LB01

23262280

Coil, IF, TRF1196D

LV01

23289840

Coil, Peaking, TRF4100AT

LV98

23103852

Coil, Filter, TEM2028AH

LV99

23103852

Coil, Filter, TEM2028AH

LY10

23238705

Coil, Peaking, TRF4560AJ

LY11

23289229

Coil, Peaking, TRF42R2AF

LY13

23289229

Coil, Peaking, TRF42R2AF

LY14

23238506

Coil, Peaking, TRF4229AJ

LY15

23238504

Coil, Peaking, TRF4159AJ

LY16

23103829

Chip (Ferrite Bead),
TEM2122M

LY17

23289229

Coil, Peaking, TRF42R2AF

LY20

23289229

Coil, Peaking, TRF42R2AF

LY21

23238509

Coil, Peaking, TRF4151AJ

LY22

23238709

Coil, Peaking, TRF4270AJ

LY23

23289229

Coil, Peaking, TRF42R2AF

LZ01

23238710

Coil, Peaking, TRF4220AJ

LZ02

23238714

Coil, Peaking, TRF4100AJ

LZ03

23238714

Coil, Peaking, TRF4100AJ

LZ04

23238714

Coil, Peaking, TRF4100AJ

LZ05

23238714

Coil, Peaking, TRF4100AJ

LZ08

23238707

Coil, Peaking, TRF4390AJ

LZ11

23238710

Coil, Peaking, TRF4220AJ

LZ11

23289836

Coil, Peaking, TRF42R2AT

LZ12

23238710

Coil, Peaking, TRF4220AJ

T401

23224367

Transformer, Horiz. Drive,
TLN1098AH

* T461

23236579

Transformer, Flyback,
TFB4151AD

T801

23211726

Line Filter, TRF3229AQ

T840

23213513

Transformer, Power,
TPW1459AZ

T862

23217460

Transformer, Converter,
TPW3445AE

SEMICONDUCTORS

Q202

23114528

Transistor, 2SC1740S, Q

Содержание 27A50

Страница 1: ...FILE NO 020 200004 SERVICE MANUAL COLOR TELEVISION N0ES Chassis 27A50 PRINTED IN U S A Apr 2000 U TAC0012 ...

Страница 2: ...DE 8 DESIGN MODE 11 ELECTRICAL ADJUSTMENTS 12 CIRCUIT CHECKS 16 CHAPTER 2 SPECIFIC INFORMATIONS SETTING ADJUSTING DATA 17 LOCATION OF CONTROLS 18 PROGRAMMING CHANNEL MEMORY 20 CIRCUIT BLOCK DIAGRAM 21 CHASSIS AND CABINET REPLACEMENT PARTS LIST 22 PC BOARDS BOTTOM VIEW 31 TERMINAL VIEW OF TRANSISTORS 34 SPECIFICATIONS 37 APPENDIX CIRCUIT DIAGRAM ...

Страница 3: ...mp AC Any value exceeding this limit consti tutes a potential shock hazard and must be corrected im mediately WARNING Service should not be attempted by anyone unfa miliar with the necessary precautions on this receiver The fol lowing are the necessary precautions to be observed before servicing this chassis 1 An isolation transformer should be connected in the power line between the receiver and ...

Страница 4: ...ASS CLOTH TAPES DEFLECTION YOKE TEMPORARY MOUNTING RUBBER WEDGE ADHESIVE DEFLECTION YOKE PURITY CONVERGENCE MAGNET ASS Y 14mm 13 14 19mm 19 20 Figure 1 COLOR PURITY ADJUSTMENT NOTE Before attempting any purity adjustments the receiver should be operated for at least fifteen minutes 1 Demagnetize the picture tube and cabinet using a degauss ing coil 2 Set the brightness and contrast to maximum 3 Us...

Страница 5: ...1 Do not remove cover paper on adhesive part of the wedge 3 Tilt front of the deflection yoke up or down to obtain better convergence in circumference See figure 3 Push the mounted wedge into the space between picture tube and the yoke to fix the yoke temporarily 4 Put other wedge into bottom space and remove the cover paper to stick 5 Tilt front of the yoke right or left to obtain better conver g...

Страница 6: ...BRIGHTNESS Controls to the maximum 3 Display built in green raster using the TEST SIGNAL SELECTION function 4 Loosen the clamp screw holding the deflection yoke and remove the Rubber Wedges 5 Slide the yoke forward or backward to provide vertical green belt zone in the picture screen 6 Rotate and spread the tabs of the purity magnet See figure 4 around the neck of the picture tube until the green ...

Страница 7: ...Pole Magnets and 6 Pole magnets interact and make dot movement com plex 7 After completing the CENTER CONVERGENCE AD JUSTMENT tighten the tightening ring to fix the mag nets Figure 3 Xv COIL ADJUSTMENT Adjust the Xv coil on the deflection yoke to correct misconvergence at both sides on screen Use a hexagonal tip stick plastic to adjust the core of coil BLU BLU RED RED 6 POLE MAGNETS MOVEMENT 4 POL...

Страница 8: ...menu provides special functions A single horizontal line ON OFF TV ANT VIDEO button on TV Test signal selection TV ANT VIDEO button on Remote Selection of the adjustment items Channel s t on TV or Remote Change of the data value Volume s t on TV or Remote Adjustment menu mode ON OFF MENU button on TV Initialization of the memory QA02 RECALL Channel s button on TV Initialization of the self diagnos...

Страница 9: ... Programming Channel Memory on the owner s manual CAUTION Never attempt to initialize the data unless QA02 has been replaced 7 TEST SIGNAL SELECTION 1 Every pressing of TV VIDEO button on the Remote Control in the service mode changes the built in test patterns on screen in the following order Normal picture Black cross bar on green raster Red raster H signal black H signal white Green raster Blue...

Страница 10: ...iter 000 is normal 3 BUS line check OK Normal SCL GND or NG SCL GND short circuit SDA GND or NG SDA GND short circuit SCL SDA or NG SCL SDA short circuit 4 BUS line ACK acknowledge check OK Normal Display of Location Number NG Display example QA02 NG H001 NG Q501 NG etc Note The indication of failure place is only one place though failure places are plural When repair of a failure place finishes t...

Страница 11: ...gn mode changes the adjustment items in the order of table 3 s button for reverse order Refer to table 3 for data of design mode See SETTING ADJUSTING DATA on page 17 3 ADJUSTING THE DATA Pressing of VOLUME s or t button will change the value of data When QA02 is initialized items OPT0 and OPT1 of DESIGN MODE are set to the data of the representative model of this chassis family Therefore because ...

Страница 12: ...d contrast 6 Adjust the HEIGHT control SUB COLOR COLC SUB TINT TNTC 1 Receive color bar signal from color bar generator 2 Press the RESET button 3 Connect oscilloscope to base of Q906 on CRT D board 4 Enter the service mode then select COLC 5 Adjust the SUB COLOR by pressing the VOLUME s or t button to achieve about 1V0 p of blue bar 6 Select TNTC register 7 Adjust the data value to obtain the blu...

Страница 13: ...button to advance the data by 8 steps Note Check the vertical picture position is correct WHITE BALANCE RCUT GCUT BCUT GDRV BDRV 1 Adjust the CONTRAST control to the center and BRIGHTNESS control to the maximum 2 Call up the adjustment mode display and press the TV VIDEO button on Remote until the white and black pattern appears on the screen 3 Adjust the following item with the CHANNEL s t and VO...

Страница 14: ...data becomes in the center of range for STA7 0 and STA8 1 STEREO FILTER STRF 4 9 4kHz 600mVrm pin 9 of H002 Monaural signal ANT 1 Display item STRF on screen 2 Change data by VOLUME s t buttons so that the data becomes in the center of range for STA3 1 SAP FILTER SAPF 5 88kHz 120mVrms pin 9 of H002 Monaural signal ANT 1 Display item SAPF 2 Change data by VOLUME s t buttons so that the data becomes...

Страница 15: ...ect oscilloscope to pin 34 of QG01 4 Change data by VOLUME s t buttons to minimize AC output level on scope 5 Resolder SL02 H001 QG01 SL02 CG44 RG44 CG07 15 734KHz 30mV rms RG43 10 7 1 STEREO 300Hz R channel only ANT 1 Display item WBAN on screen 2 Connect oscilloscope to pin 35 of QG01 3 Change data by VOLUME s t buttons so that 300Hz element on scope becomes mini mum STEREO 3kHz R channel only A...

Страница 16: ...IGHTNESS and CON TRAST controls to minimum zero beam current 3 High voltage must be measured below B kV Refer to table 1 for high voltage B See SETTING ADJUSTING DATA on page 17 4 Vary the BRIGHTNESS control to both extremes to be sure the high voltage does not exceed the limit under any con ditions FS CIRCUIT CHECK The Fail Safe FS circuit check is indispensable for the final check in servicing C...

Страница 17: ...TNTC SAVC ATT STVC STRF SPEC WBAN HPOS Preset Data 40H 40H 40H 40H 40H 08H 40H 40H 40H 20H 20H 20H 20H 20H 20H 16H Item Name of adjustment Preset Data Table 2 DESIGN MODE ADJUSTING ITEMS AND DATA IN THE DESIGN MODE CIRCUIT CHECKS Data Item Name of adjustment Preset Data 27 Remarks OPT0 OPT1 20H 80H OPTION 0 OPTION 1 Table 3 Table 4 FBT DETECTION VOLTAGE C 21 87V VPOS HIT LIN VSC WID DPC CNR TRAP P...

Страница 18: ...EO L Y R AUDIO VIDEO 1 VIDEO 2 CB CR COLOR STREAM INPUT IN OUT ANT S VIDEO VIDEO VIDEO L MONO R AUDIO L MONO R AUDIO VIDEO L Y R AUDIO VIDEO 1 VIDEO 2 CB CR COLOR STREAM INPUT MENU TV VIDEO VOLUME CHANNEL POWER Rear view T S t s button MENU button TV VIDEO button VOLUME T S button CHANNEL s t button POWER button Remote sensor POWER indicator ...

Страница 19: ...URCE STILL PIP SLOW PIP CH LOCATE SWAP STOP PLAY REC TV VCR TV VIDEO FAV CH A EXIT VOLUME T S buttons menu T S buttons CH RTN button MENU button EXIT button TV VIDEO button POWER buttons PIP function Channel Number buttons TV CABLE VCR switch Set to TV to control the TV FAV t s button CHANNEL s t buttons menu s t buttons MUTE button RECALL button Remote ...

Страница 20: ...RAM is displayed in purple 3 Press T or S to start channel programming TheTVwillautomaticallycyclethroughalltheTVorCABLE channels depending on the mode selected and store active channels in the channel memory 4 When channel programming is complete you will see the message on the screen 5 Press CHANNEL s or t to make sure the channel pro gramming has been done properly ADD ERASE function After perf...

Страница 21: ... 21 GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS CIRCUIT BLOCK DIAGRAM QG01 MTS ...

Страница 22: ...39104 PF 0 1 F C225 24539104 PF 0 1 F C226 24539104 PF 0 1 F C245 24206108 EL 0 1 F 20 50V C261 24539104 PF 0 1 F C262 24539104 PF 0 1 F C263 24539104 PF 0 1 F C305 24617912 EL 2 2 F 10 50V C306 24073058 EL 2200 F 20 25V C307 24693223 PF 0 022 F 100V C308 24668221 EL 220 F 20 35V C309 24591102 PF 1000pF C310 24796102 EL 1000 F 20 35V C311 24435820 CD 82pF 500V C313 24082057 PF 0 22 F 100V C314 245...

Страница 23: ...24085944 EL 2 2 F 20 50V Non Polar CB61 24591102 PF 1000pF CB62 24436561 CD 560pF CB63 24591122 PF 1200pF CB64 24763471 EL 470 F 20 16V CB65 24591104 PF 0 1 F CG02 24203220 EL 22 F 20 16V CG03 24539104 PF 0 1 F CG05 24797010 EL 1 F 20 50V CG06 24797479 EL 4 7 F 20 50V CG07 24206229 EL 2 2 F 20 50V CG08 24591473 PF 0 047 F CG09 24797478 EL 0 47 F 20 50V CG10 24539104 PF 0 1 F CG12 24206108 EL 0 1 F...

Страница 24: ...3 F 6 3V CY79 24814103 Chip 0 01 F 80 20 CY80 24092293 Chip 0 1 F 80 20 25V CZ03 24092442 Chip 0 47 F 80 20 16V CZ05 24814103 Chip 0 01 F 80 20 CZ07 24092178 Chip 0 1 F 10 25V CZ09 24781220 Chip 22pF SL CZ10 24781100 Chip 10pF 0 5pF SL CZ11 24781220 Chip 22pF SL CZ12 24814103 Chip 0 01 F 80 20 CZ13 24814103 Chip 0 01 F 80 20 CZ14 24203100 EL 10 F 20 16V CZ17 24814103 Chip 0 01 F 80 20 CZ19 2478118...

Страница 25: ...R667 24366223 CF 22k ohm R668 24366103 CF 10k ohm R669 24366103 CF 10k ohm R676 24366229 CF 2 2 ohm R677 24366229 CF 2 2 ohm R808 24019483 PTC Thermistor 7 0 ohm R810 24569828 Cement 0 82 ohm 10 10W R814 24366103 CF 10k ohm R815 24552332 OMF 3300 ohm 1 2W R818 24323479 MF 4 7 ohm 2W R820 24322228 MF 0 22 ohm 1W R821 24552470 OMF 47 ohm 1 2W R823 24366222 CF 2200 ohm R829 24322228 MF 0 22 ohm 1W R8...

Страница 26: ... 24366162 CF 1600 ohm RG17 24366472 CF 4700 ohm RG22 24366101 CF 100 ohm RG23 24366101 CF 100 ohm RG36 24366472 CF 4700 ohm RG37 24366472 CF 4700 ohm RG41 24366103 CF 10k ohm RG43 24366472 CF 4700 ohm RG44 24366222 CF 2200 ohm RG45 24545479 FR 4 7 ohm 1 4W RG46 24552681 OMF 680 ohm 1 2W RM02 24366332 CF 3300 ohm RM03 24872102 Chip 1k ohm 1 16W RM04 24872102 Chip 1k ohm 1 16W RM05 24872471 Chip 470...

Страница 27: ...Z13 24872122 Chip 1200 ohm 1 16W RZ14 24872821 Chip 820 ohm 1 16W RZ15 24872821 Chip 820 ohm 1 16W RZ17 24872471 Chip 470 ohm 1 16W RZ18 24872122 Chip 1200 ohm 1 16W RZ19 24872332 Chip 3300 ohm 1 16W RZ20 24872101 Chip 100 ohm 1 16W RZ22 24872471 Chip 470 ohm 1 16W RZ29 24872331 Chip 330 ohm 1 16W RZ30 24366102 CF 1k ohm RZ30 24872331 Chip 330 ohm 1 16W COILS TRANSFORMERS COILS TRANSFORMERS COILS ...

Страница 28: ...162 Y QM03 A6335470 Transistor 2SC2712 Y QM04 A6361770 Transistor 2SC3437 Y QM05 70119743 IC PST523D QM53 23314360 Transistor DTC143TN QS60 23314965 Transistor KTC3198 Y QS61 23314965 Transistor KTC3198 Y QS62 A6012040 Transistor RN2204 QS63 A6342200 Transistor 2CS2878 A QS64 A6342200 Transistor 2CS2878 A QV01 23906364 IC MM1313BD QV60 23114528 Transistor 2SC1740S Q QY02 23906842 IC M65617SP B QY0...

Страница 29: ...908 23289100 Coil Peaking TRF4100AF G916 24366101 CF 100 ohm G945 24366101 CF 100 ohm G946 24366101 CF 100 ohm GR01 24366470 CF 47 ohm GR02 24366101 CF 100 ohm GR03 24366101 CF 100 ohm JY100 24000824 Chip Jumper 2125Type JY101 24000824 Chip Jumper 2125Type KB01 23906805 Remote Sensor PIC TB17 P801 23372115 Power Cord P910 23164725 Plug 2P PV01 23365818 Jack SVHS PV02 23365990 Jack 6P PV03 23365991...

Страница 30: ... 30 GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS THIS PAGE IS INTENTIONALLY LEFT BLANK ...

Страница 31: ... 31 32 MAIN BOARD PB9549A BOTTOM FOIL SIDE ...

Страница 32: ...1186A 3 2SC752GTM 2SC2482 2SC2655 2SC4721P 4 2SC752 2SA562TM 2SA1015 2SC1815 2SC2878 2SC1740S 2SC2120 2SA9335 5 2SA1788 6 RN2203 RN2201 RN2004 RN1203 RN1204 RN2204 RN1205 RN1202 RN1201 E C B B C E BCE B CE B C E E C B 8 ON4409 7 2SD1554 2SD2253 2SD1556 2SC5143 2SD2553 E C B B C E PIP BOARD PB8622 BOTTOM FOIL SIDE DIGI COMB BOARD PB9398 BOTTOM FOIL SIDE ...

Страница 33: ... 35 GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS MEMO ...

Страница 34: ... 36 GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS MEMO ...

Страница 35: ...inches 60 x 120 mm VIDEO AUDIO TERMINALS S VIDEO INPUT Y INPUT 1V p p 75 ohm negative sync C INPUT 0 286V p p burst signal 75 ohm AUDIO VIDEO INPUT VIDEO 1V p p 75 ohm negative sync AUDIO 150mV rms 30 modulation equivalent 47k ohm Color StreamTM component video INPUT Y 1V p p 75 ohm CR 0 7V p p 75 ohm CB 0 7V p p 75 ohm AUDIO VIDEO OUTPUT VIDEO 1V p p 75 ohm negative sync AUDIO 150mV rms 30 modula...

Страница 36: ...1 000 M 1 000 000 All resistors are 1 6W and 5 tolerance carbon resistor unless otherwise noted as the following marks 1 2R Metal or Metal oxide of 1 2 watt 1 2S Carbon compsistion of 1 2 watt 1RF Fuse resistor of 1 watt 10W Cement of 10 watt K 10 G 2 F 1 2 CAPACITOR Unless otherwise noted in schematic all capacitor values less than 1 are expressed in F and the values more than 1 in pF All capacit...

Страница 37: ... with DIGITAL MULTI METER from point indicated to chassing ground using a color bar signal with all controls at normal line voltage 120 volts 5 Waveforms are taken receiving color bar signal with enough sensitivity 6 Voltage reading shown are nominal values and may vary 20 except H V NOTE 1 RESISTOR Resistance is shown in ohm K 1 000 M 1 000 000 All resistors are 1 6W and 5 tolerance carbon resist...

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