Toshiba 20AR20 Service Manual Download

Page: 27 / 32

No.

Part No.

Description

20AR20/30

VCEA0A1HW475M

VCEA0A1CW106M

VCKYPA2HB152K

VCEA0A1CW477M

RC-FZ027SCEZZ

AD100135

AD100119

AD100162

AD100127

AD100043

Description

4.7

50V

EL.

1 0

16V

EL.

1500p

500V

Ceramic

470

16V

EL.

0.047

AC250V

Plastic

4.7

50V

EL.(N.P)

(20AR30)

5600p

50V

Ceramic

(20AR30)

0.012

50V

Mylar

(20AR30)

1.0

50V

EL. (20AR30)

4.7

50V

EL. (20AR30)

1 0

50V

EL. (20AR30)

4.7

50V

EL. (20AR30)

0.01

50V

Ceramic

(20AR30)

220

16V

EL. (20AR30)

4.7

50V

EL.(N.P)

(20AR30)

4.7

50V

EL. (20AR30)

4.7

50V

EL.(N.P)

(20AR30)

2700p

50V

Ceramic

(20AR30)

0.01

50V

Mylar

(20AR30)

3.3

16V

Tantalum

(20AR30)

4.7

50V

EL.(N.P)

(20AR30)

1 0

16V

Tantalum

(20AR30)

1.0

50V

EL. (20AR30)

4.7

50V

EL. (20AR30)

AD100117

AD100154

AD100169

AD100130

AD100135

AD100131

0135

AD100155

AD100123

AD100117

AD100135

AD100117

AD100159

AD100167

AD100178

AD100117

AD100175

AD100130

AD100135

4.7

50V

EL. (20AR30)

RESISTORS

[M-Ox... Metal Oxide, M-Film... Metal Film]

1/16W

M-Ox.

1/16W

M-Ox.

1/16W

M-Ox.

(20AR30)

1/16W

M-Ox.

1/16W

M-Ox.

1/16W

M-Ox.

1/16W

M-Ox.

(20AR20)

1/16W

M-Ox.

(20AR30)

1/16W

M-Ox.

(20AR30)

1/16W

M-Ox.

(20AR30)

1/16W

M-Ox.

1/16W

M-Ox.

(20AR30)

1/16W

M-Ox.

(20AR30)

330

M-Ox.

Carbon

22k

3.0W

M-Ox.

100

1/16W

M-Ox.

100

1/16W

M-Ox.

82k

1/16W

M-Ox.

3.9k

1/16W

M-Ox.

220

1/16W

M-Ox.

1.2k

1/16W

M-Ox.

6.8k

1/16W

M-Ox.

2 7

1/16W

M-Ox.

390

1/16W

M-Ox.

150

1/4W

Carbon

390

1/16W

M-Ox.

2.2k

1/8W

Carbon

1.0k

1/16W

M-Ox.

10k

1/16W

M-Ox.

33k

1/16W

M-Ox.

(20AR30)

Ref. No.

VCE9GA1HW475M

VCKYCY1HB562K

VCQYTA1HM123J

VCEA0A1HW105M

VCEA0A1HW475M

VCEA0A1HW106M

VCEA0A1HW475M

VCKYCY1HF103Z

VCEA0A1CW227M

VCE9GA1HW475M

VCEA0A1HW475M

VCE9GA1HW475M

VCKYCY1HB272K

VCQYTA1HM103J

VCSATA1CE335K

VCE9GA1HW475M

VCSATA1CE106K

VCEA0A1HW105M

VCEA0A1HW475M

VRS-CY1JF000J

VRS-VV3AB331J

VRS-VV3DB470J

VRS-VV3LB223J

VRS-CY1JF101J

VRS-CY1JF823J

VRS-CY1JF392J

VRS-CY1JF221J

VRS-CY1JF122J

VRS-CY1JF682J

VRS-CY1JF270J

VRS-CY1JF391J

VRD-RA2EE151J

VRS-CY1JF391J

VRD-RA2BE222J

VRS-CY1JF102J

VRS-CY1JF103J

VRS-CY1JF333J

VRS-CY1JF102J

1.0k

1/16W

M-Ox.

(20AR30)

PWB-A: DUNTK9731WEV3(20AR20)
PWB-A: DUNTK9731WEV4(20AR30)

MAIN UNIT (Continued)

Ref. No.

Loc.

Loc. No.

AD100249

AD100292

AD100295

AD100296

AD100250

AD100283

AD100272

AD100260

AD100255

AD100280

AD100263

AD100271

AD100230

AD100271

AD100213

AD100251

AD100252

AD100270

AD100251

C652

C653

C661

C662

C701

VCEAGH2CW107M

RC-KZ0341CEZZ

VCKYPA2HB102K

VCEA0A1CW477M

RC-KZ0341CEZZ

VCEA0A2EW106M

VCKYPA2HB102K

VCEA0A1CW337M

VCQYTA1HM104J

VCQYTA1HM223J

VCEA0A1HW474M

VCCCCY1HH120J

VCEA0A1HW104M

VCCCCY1HH820J

VCKYCY1EF104Z

VCEA0A1HW335M

VCCCCY1HH101J

VCEA0A1CW106M

VCCCCY1HH101J

VCEA0A1AW107M

VCEA0A1HW105M

VCQYTA1HM104J

VCCCPA1HH101J

VCEA0A1AW107M

VCCCPA1HH560J

VCEA0A1CW476M

VCCCCY1HH101J

AD100143

AD100056

AD100161

AD100127

AD100056

AD100137

AD100161

AD100125

AD100168

AD100170

AD100134

AD100109

AD100129

AD100114

AD100149

AD100133

AD100108

AD100119

AD100108

AD100118

AD100130

AD100168

AD100115

AD100118

AD100116

AD100126

AD100108

(20AR30)

100

160V

EL.

0.001

2kV

Ceramic

1000p

500V

Ceramic

470

16V

EL.

0.001

2kV

Ceramic

1 0

250V

EL.

1000p

500V

Ceramic

330

16V

EL.

0.1

50V

Mylar

0.022

50V

Mylar

0.47

50V

EL.

12p

50V

Ceramic

0.1

50V

EL.

0.1

50V

EL.

0.1

50V

EL.

82p

50V

Ceramic

0.1

25V

Ceramic

3.3

50V

EL.

3.3

50V

EL.

100p

50V

Ceramic

100p

50V

Ceramic

1 0

16V

EL.

100p

50V

Ceramic

100p

50V

Ceramic

100p

50V

Ceramic

100p

50V

Ceramic

100

10V

EL.

1.0

50V

EL.

0.1

50V

Mylar

100p

50V

Ceramic

100

10V

EL.

56p

50V

Ceramic

56p

50V

Ceramic

4 7

16V

EL.

100p

50V

Ceramic

C751

C752

C754

C755

C757

C758

C759

C760

C761

C801

C802

C803

C804

C805

C806

C807

C901

C904

C905

C2001

C2002

C2003

C2021

C2022

C2023

C2024

C2040

C2041

C2060

C2061

C2062

C2401

C2402

C2601

C2602

C3001

C3002

C3003

C3004

C3005

C3006

C3007

C3008

C3009

C3010

C3011

C3012

C3013

C3014

C3015

C3016

C3017

C3018

C3019

C3020

RJ1

RJ2

RJ4

RJ5

RJ6

RJ7

RJ8

RJ11

RJ12

RJ13

RJ15

RJ16

RJ17

R51

R52

R53

R54

R55

R56

R57

R201

R202

R203

R204

R205

R206

R208

R301

R302

R303

R304

R305

RC-KZ0029CEZZ

RC-EZ0804CEZZ

VCKYPA2HB102K

RC-KZ0029CEZZ

VCKYPA2HB102K

VCKYPA2HB472K

RC-KZ0341CEZZ

RC-KZ0029CEZZ

VCEA0A1CW477M

VCFYHA1HA474J

VCEA0A1HW106M

VCFYHA1HA684J

VCQYTA1HM471J

VCEA0A1CW107M

VCEAGA1JW476M

VCFYHA1HA394J

VCKYPA1HB272K

VCKYPA2HB102K

VCEA0A1HW105M

VCQYTA1HM563J

RC-KZ0311CEZZ

AD100054

AD100161

AD100054

AD100161

AD100165

AD100056

AD100054

AD100127

AD100147

AD100131

AD100148

AD100171

AD100120

AD100141

AD100146

AD100159

AD100161

AD100130

AD100173

AD100055

0.01

AC250V

Ceramic

0.01

AC250V

Ceramic

0.01

AC250V

Ceramic

220

400V

1000p

500V

Ceramic

0.01

AC250V

Ceramic

1000p

500V

Ceramic

4700p

500V

Ceramic

1000p

2kV

Ceramic

0.01

AC250V

Ceramic

0.01

AC250V

Ceramic

470

16V

EL.

0.47

50V

Mylar

1 0

50V

EL.

0.68

50V

Mylar

470p

50V

Mylar

100

16V

EL.

4 7

63V

EL.

0.39

50V

Mylar

2700p

50V

Ceramic

1000p

500V

Ceramic

1.0

50V

EL.

0.056

50V

Mylar

0.0033 AC250V

Ceramic

C703

C704

C705

C706

C707

C708

C709

C710

C71 1

C712

C713

C714

C715

C716

C717

C718

C719

C720

C721

C722

C723

C724

C725

C730

0315

Summary of Contents for 20AR20

Page 1: ...CATIONS Specifications are subject to change without prior notice SERVICE MANUAL 20AR20 30 MODELS 20AR30 20AR20 POWER INPUT 110 220 V AC 50 60 Hz POWER RATING 20AR20 88 W 20AR30 98 W PICTURE SIZE 1 194cm2 185sq inch CONVERGENCE Magnetic SWEEP DEFLECTION Magnetic FOCUS QPF Electrostatic INTERMEDIATE FREQUENCIES Picture IF Carrier Frequency 45 75 MHz Sound IF Carrier Frequency 41 25 MHz Color Sub Ca...

Page 2: ...es not exceed the specified value and that it is regulating correctly 5 Do not use a picture tube other than that specified or make unrecommended circuit modifications to the high voltage circuitry 6 When trouble shootingand taking test measurements on a receiverwith excessivehigh voltage avoid being unnecessarily close to the receiver Do not operate the receiver longer than is necessary to locate...

Page 3: ...5 F capacitorin series with all exposed metal cabinet parts and a known earth ground such as electrical conduit or electrical ground connected to earth ground Use an AC voltmeter having with 5000 ohm per volt or higher sensitivity to measure the AC voltage drop across the resistor For continued protection replacement parts must be identical to those used in the original circuit The use of substitu...

Page 4: ...PUT Press Switch to external video input mode Press again Switch to TV mode See page 17 CHANNEL UP DOWN Selects next higher channel Selects next lower channel See pages 15 16 for channel presetting Moves the mark of the MENU screen MENU Press Accesses MAIN MENU Press again Exits MAIN MENU DISPLAY Press Displays receiving channel for 4 seconds Press again Removes display Temporarily displays receiv...

Page 5: ...ration of the horizontal oscillator does not stop in step 5 the circuit must be repaired before the set is returned to the customer HIGH VOLTAGE CHECK High voltage is not adjustable but must be checked to verify that the receiver is operating within safe and efficient design limitations as specified checks should be as follows 1 Connect an accurate high voltage meter between ground and anode of pi...

Page 6: ...u to ensure customer controls are in their proper reset position 2 Service number selection Once in the service mode press the Ch up or Ch down button on the remote controller or at the set The service adjustment number will vary in increments of one from S01 to M05 Select the item you wish to adjust 3 Data number selection Press the Vol up or down button to adjust the data number To enter and exi...

Page 7: ...No Vertical OP OPTION Set to each model 80 00 FF Must be set to 08 20AR20 09 20AR30 M01 MTS LEVEL 0A 00 0F M02 STEREO VCO 20 00 3F M03 FILTER 1C 00 3F M04 LOW SEPARATION 20 00 3F M05 HIGH SEPARATION 1B 00 3F NECESSARY UNNECESSARY ADJUSTMENT NOTES PART REPLACED IC2001 IC2101 X IC3001 20AR30 CRT X IC201 X X Data is stored in IC2101 Adjust items related to picture tube only Holding down both the CH u...

Page 8: ...rely seen 7 Adjust the serviceadjustments S11 red S12 green and S13 blue to obtain a good grey scale with normal whites at low brightness level 8 Select the service adjustment S19 and reset data to 00 Select the service adjustment S03 and reset data to obtain normal color level 9 Removedigitalvoltmeter and reset the masterscreen control to obtain normal brightness range White Balance Adjustment 1 ...

Page 9: ...hen adjust another data retrace line will be appear Horizontal Position Adjustment 1 Receive a good local channel 2 Enter the service mode and select the service adjustment S07 3 Adjust S07 data value so that picture is centered Caption Position Adjustment Horizontal 1 Receive a good local channel 2 Enter the service mode and select the service adjustment S18 3 A black text box appears on the scre...

Page 10: ...n 14 of IC3001 Stereo pilot signal 9 4kHz 600mVrms 2 Enter the service mode and select the service adjustment M03 3 Adjust the data at the point where OK appears on the screen The OK represents the approximate center of the adjustable range of the data Separation Adjustment 1 Connect the rms voltmeter to pin 39 of IC3001 2 Receive the following composite stereo signal 1 Composite stereo signal 30 ...

Page 11: ...11 20AR20 20AR30 6 5 4 3 2 1 A B C D E F G H MODEL 20AR20 CHASSIS LAYOUT PWB C PWB B PWB A ...

Page 12: ...12 20AR20 20AR30 6 5 4 3 2 1 A B C D E F G H MODEL 20AR30 CHASSIS LAYOUT PWB C PWB A PWB B ...

Page 13: ...13 20AR20 20AR30 6 5 4 3 2 1 A B C D E F G H MODEL 20AR20 BLOCK DIAGRAM ...

Page 14: ...14 20AR20 20AR30 6 5 4 3 2 1 A B C D E F G H MODEL 20AR30 BLOCK DIAGRAM ...

Page 15: ...l controls set for normal picture unless otherwise indicated 2 All voltages measured with 1000µ V B W or Color signal WAVEFORM MEASUREMENT CONDITIONS 1 Photographs taken on a standard gated color bar signal the tint setting adjusted for proper color The wave shapesat the red green and blue cathodesof the picture tube depend on the tint color level and picture control 2 indicates waveform check poi...

Page 16: ...16 20AR20 20AR30 6 5 4 3 2 1 A B C D E F G H 8 7 10 9 6 5 4 3 2 1 A B C D E F G H MODEL 20AR20 SCHEMATIC DIAGRAM MAIN Unit VSP9050PB218A VSP9050PB218A VTST5UF78 ...

Page 17: ...17 20AR20 20AR30 6 5 4 3 2 1 A B C D E F G H 17 16 19 18 15 14 13 12 11 10 H0106GJ H0201PE ...

Page 18: ...18 20AR20 20AR30 6 5 4 3 2 1 A B C D E F G H MODEL 20AR30 SCHEMATIC DIAGRAM MAIN 1 Unit 8 7 10 9 6 5 4 3 2 1 A B C D E F G H 16 16 VSP9050PB25WA VSP9050PB25WA VTST5UF78 CILG0107PE ...

Page 19: ...19 20AR20 20AR30 6 5 4 3 2 1 A B C D E F G H 17 16 19 18 15 14 13 12 11 10 2 2 H0106GJ H0201PE ...

Page 20: ...20 20AR20 20AR30 6 5 4 3 2 1 A B C D E F G H MODEL 20AR30 SCHEMATIC DIAGRAM MAIN 2 Unit ...

Page 21: ...21 20AR20 20AR30 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM FRONT AV and CRT Unit 20AR30 20AR20 ...

Page 22: ...22 20AR20 20AR30 6 5 4 3 2 1 A B C D E F G H PWB A MAIN Unit Wiring Side PRINTED WIRING BOARD ASSEMBLIES ...

Page 23: ...23 20AR20 20AR30 6 5 4 3 2 1 A B C D E F G H PWB A MAIN Unit Chip Parts Side ...

Page 24: ...24 20AR20 20AR30 6 5 4 3 2 1 A B C D E F G H PWB C FRONT AV Unit Wiring Side PWB B CRT Unit Wiring Side ...

Page 25: ...79 AD100067 AD100067 AD100067 AD100084 AD100077 AD100078 AD100073 AD100069 AD100073 AD100080 AD100081 AD100069 AD100076 AD100074 AD100079 VHiKA78S05P 1 RH iX2701CEN1 RH iX2933CEZZ VHiTDA7056A 1 VHiTDA7056A 1 VHiTA8403K 1 RH iX1779CEZZ VHiKA7809Pi 1 VHiKA7809AP 1 RH iX2946CEZZ VHiPST994C 1 VHiM24C01B 1 VHiBR24C01 1 VHiAT24C01 1 VHiCXA2053Q 1 AD100183 AD100087 AD100088 AD100187 AD100187 AD100186 AD1...

Page 26: ...63J VCEA0A1HW475M VCEA0A1EW477M VCKYPA2HB391K VCQYTA1HM473J VCQYTA1HM103J VCEAGA1VW107M VCKYPA2HB102K VCEA0A1VW477M VCQYTA1HM473J VCEACA1HC225M VCEACA1HC225J VCKYPA1HB102K VCKYCY1HF103Z VCSATA1CE225K VCEA0A1HW225M VCKYPB2HB562K VCEAGH2CW227M VCFPPD3CA872H VCKYP A2HB222K VCFPPJ2EB474J VCEA0A1HW225M VCKYCY1HF103Z VCEA0A1HW105M AD100177 AD100130 AD100135 AD100127 AD100121 AD100155 AD100160 AD100155 A...

Page 27: ...0A1CW477M RC KZ0341CEZZ VCEA0A2EW106M VCKYPA2HB102K VCEA0A1CW337M VCQYTA1HM104J VCQYTA1HM223J VCEA0A1HW474M VCCCCY1HH120J VCEA0A1HW104M VCEA0A1HW104M VCEA0A1HW104M VCCCCY1HH820J VCKYCY1EF104Z VCEA0A1HW335M VCEA0A1HW335M VCCCCY1HH101J VCCCCY1HH101J VCEA0A1CW106M VCCCCY1HH101J VCCCCY1HH101J VCCCCY1HH101J VCCCCY1HH101J VCEA0A1AW107M VCEA0A1HW105M VCQYTA1HM104J VCCCPA1HH101J VCEA0A1AW107M VCCCPA1HH560...

Page 28: ...0 AD100281 AD100251 AD100251 AD100253 AD100253 AD100199 AD100199 AD100252 AD100252 AD100217 AD100251 AD100200 AD100282 AD100274 AD100236 AD100217 AD100280 AD100280 AD100280 AD100280 AD100200 AD100251 AD100252 AD100221 AD100251 AD100217 AD100250 AD100250 AD100280 AD100250 AD100260 Description 2 2 1W M Film 0 47 1W M Film 2 7 10W Cement 1 5 5W Cement 180k 1 2W Carbon 180k 1 2W Carbon 2 7k 3 0W M Ox ...

Page 29: ... Ox 47 1 8W Carbon 220 1 8W Carbon 20AR30 220 1 8W Carbon 20AR30 1 0M 1 16W M Ox 20AR30 100k 1 16W M Ox 20AR30 62k 1 16W M Ox 20AR30 3 3k 1 16W M Ox 20AR30 3 0k 1 16W M Ox 20AR30 3 9k 1 16W M Ox 20AR30 1 0k 1 16W M Ox 20AR30 1 0k 1 16W M Ox 20AR30 2 2 1 8W Carbon 20AR30 Power Vol Down Vol Up Ch Down Ch Up Relay Relay Fuse 3 15A Ferrite Bead Ferrite Bead Ferrite Bead Ferrite Bead Ferrite Bead Ferri...

Page 30: ... 220 1 8W Carbon 120 1 8W Carbon 12k 1W M Ox 3 3k 1 2W Carbon 1 0k 1 8W Carbon 390 1 8W Carbon 560 1 8W Carbon 1 5k 1 8W Carbon 4 7 1 8W Carbon Plug 5 pin GBN Plug 4 pin YBN C R T Socket 4 7 1 8W Carbon UBATU0001AJZZ AD100104 AD100094 AD100033 AD100105 Battery Box Unit A1HB271K A1HB271K A1HB271K QJAKE0150CEZZ QJAKE0185CEZZ QJAKE0184CEZZ QPLGN0561CEZZ VP DF151K0000 VCKYP VCKYP VCKYP RC KZ0016CEZZ V...

Page 31: ...30 PACKING OF THE SET Use tape to seal the packing case Packing Case FRONT Buffer Material Polyethylene Foam Wrap Polyethylene Bag MARK Not Replacement Items Operation manual Infrared R C Unit AC Adapter Warranty Card Batteries CINS 7104WEV0 SPAKX0002GJZZ SPAKP0102GJZZ SPAKC0137GJZZ ...

Page 32: ...nical photocopying recording or otherwise without prior written permission of the publisher TOSHIBA AMERICA CONSUMER PRODUCTS INC TOSHIBA DE MEXICO S A DE C V LATIN AMERICA DIVISION HEAD OFFICE 82 TOTOWA ROAD WAYNE NEW JERSEY 07470 TEL 973 628 8000 SIERRA CANDELA NO 111 6 PISO COL LOMAS DE CHAPULTEPEC 11000 MEXICO D F TEL 5 202 26 77 1900 NORTH WEST 84TH AVENUE MIAMI FLORIDA 33126 TEL 305 470 9355...

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Toshiba 20AR20, Service Manual

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