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19

37GQ-20H

REF No. PARTS

DESCRIPTION

* CODE

L  0801

VP-DF3R3K0000

PEAK  COIL 3,3UH 10%

S AA

L  0802

VP-NM3R3MR19N

COIL 3,3UH SMD

S AC

L  1001

VP-DF100K0000

PEAK  COIL  10UH 10%

S AA

L  1002

VP-NM680K3R5N

COIL  68UH SMD

S AD

CERAMIC FILTERS

CF 0201 RFILC0023CEZZ

SOUND FILTER (TAPED)

S AC

SF 0201 RFILC0282BMZZ

SAW FILTER J1952M 38.90MHZ

S AM

X  1001

RFILC0121GEZZ

FILTER CST8.00MTW MURATA

S AD

TRANSFORMERS

T  0601

RTRNF2072BMZZ

SMT 8228 001 3493 PHILIPS 14"

S AW

T  0701

RTRNZ0580BMZZ

SMT 8228 001 3500 PHILIPS 14"

S AL

CAPACITORS

C  0201

VCCCTV1HH220J

CERAM C  22PF 50V 2125SMD

S AA

C  0202

VCKYTV1HB102K

CERAM C   1NF 50V 2125SMD

S AA

C  0203

VCKYTV1EF334Z

CERAM C 330NF 25V 2125SMD

S AB

C  0205

VCEAGA1HW105M

ELEC C    1UF 20%  50V

S AA

C  0206

VCKYTV1HF223Z

CERAM C  22NF 50V 2125SMD

S AA

C  0207

VCEAGA1CW106M

ELEC C   10UF 20%  16V

S AA

C  0208

VCEAGA1HW105M

ELEC C    1UF 20%  50V

S AA

C  0209

VCEAGA0JW107M

ELEC C  100UF 20% 6,3V

S AA

C  0210

VCKYTV1HF104Z

CERAM C 100NF 50V 2125SMD

S AA

C  0211

VCKYTV1HF103Z

CERAM C  10NF 50V 2125SMD

S AA

C  0212

VCKYTV1HF103Z

CERAM C  10NF 50V 2125SMD

S AA

C  0213

VCKYTV1HF103Z

CERAM C  10NF 50V 2125SMD

S AA

C  0214

VCKYTV1HF103Z

CERAM C  10NF 50V 2125SMD

S AA

C  0215

VCEAGA1AW476M

ELEC C   47UF 20%  10V

S AA

C  0216

VCKYTV1HF224Z

CERAM C 220NF 50V 2125SMD

S AB

C  0221

VCCCTV1HH101J

CERAM C 100PF 50V 2125SMD

S AA

C  0222

VCKYTV1HF104Z

CERAM C 100NF 50V 2125SMD

S AA

C  0223

VCCWPA2HL8R2C

C  8,2PF 0,25 N1500 500V

S AB

C  0224

VCKYTV1HB104K

CERAM C 100NF 50V 2125SMD

S AA

C  0225

VCKYTV1HB104K

CERAM C 100NF 50V 2125SMD

S AA

C  0301

VCEAGA1HW225M

ELEC C  2,2UF 20%  50V

S AA

C  0302

VCEAGA1HW105M

ELEC C    1UF 20%  50V

S AA

C  0303

VCEAGA2CW105M

ELEC C    1UF 20% 160V

S AB

C  0304

VCEAGA1CW107M

ELEC C  100UF 20%  16V

S AA

C  0307

VCEAGA1CW476M

ELEC C   47UF 20%  16V

S AA

C  0308

VCEAGA1HW105M

ELEC C    1UF 20%  50V

S AA

C  0309

VCKYTV1HF103Z

CERAM C  10NF 50V 2125SMD

S AA

C  0312

VCEAGA1AW227M

ELEC C  220UF 20%  10V

S AA

C  0315

VCCCTV1HH101J

CERAM C 100PF 50V 2125SMD

S AA

C  0401

VCEAGA1HW105M

ELEC C    1UF 20%  50V

S AA

C  0404

VCKYTV1HB102K

CERAM C   1NF 50V 2125SMD

S AA

C  0405

VCKYTV1HB102K

CERAM C   1NF 50V 2125SMD

S AA

C  0406

VCEAGA1HW226M

ELEC C   22UF 20%  50V

S AA

C  0408

VCEAGA1CW476M

ELEC C   47UF 20%  16V

S AA

C  0409

VCKYTV1HB102K

CERAM C   1NF 50V 2125SMD

S AA

C  0503

RC-FZ9334BMNJ

POL FILM C  330NF 5%  63V

S AB

C  0507

VCKYTV1HF224Z

CERAM C 220NF 50V 2125SMD

S AB

C  0508

RC-FZ9334BMNJ

POL FILM C  330NF 5%  63V

S AB

C  0510

VCCCTV1HH101J

CERAM C 100PF 50V 2125SMD

S AA

C  0601

RC-FZ0135BMZZ

POLIP C B32650 6N8 1,5KV

S AE

C  0603

VCEAGA1AW227M

ELEC C  220UF 20%  10V

S AA

C  0604

VCEAGA1AW227M

ELEC C  220UF 20%  10V

S AA

C  0605

RC-FZ9104BMNJ

POL FILM C  100NF 5%  63V

S AA

C  0606

VCKYTV1HF223Z

CERAM C  22NF 50V 2125SMD

S AA

C  0607

VCEAGA1VW107M

ELEC C  100UF 20%  35V

S AA

C  0608

VCEAGA2CW105M

ELEC C    1UF 20% 160V

S AB

C  0609

RC-FZ0174BMZZ

POLIP C B32652 470NF 250V

S AC

C  0610

VCKYTV1HB223K

CERAM C  22NF 50V 2125SMD

S AA

C  0701

RC-FZ0160BMZZ

CAP B1133-D1474-M SIEMENS

S AF

C  0702

RC-KZ0029CEZZ

CERAM C 10NF 80,20% 250V

S AB

C  0703

RC-KZ0029CEZZ

CERAM C 10NF 80,20% 250V

S AB

C  0704

RC-KZ0029CEZZ

CERAM C 10NF 80,20% 250V

S AB

C  0705

RC-EZ0140BMZZ

ELEC C   47UF 400V TROBO

S AK

C  0707

VCEAGA1CW106M

ELEC C   10UF 20%  16V

S AA

C  0708

VCKYTV1HB153K

CERAM C  15NF 50V 2125SMD

S AA

!
!

!

REF No. PARTS

DESCRIPTION

* CODE

C  0709

RC-KZ0160BMZZ

CERAM C  2,2NF  4KV X1Y1

S AC

C  0710

VCEAGA1EW227M

ELEC C  220UF 20%  25V

S AA

C  0711

VCEAGH2CW107M

ELEC C  100MF 20% 160V

S AE

C  0712

VCEAGA1CW227M

ELEC C  220UF 20%  16V

S AA

C  0713

VCEAGA1CW227M

ELEC C  220UF 20%  16V

S AA

C  0714

VCEAGA1AW477M

ELEC C  470UF 20%  10V

S AA

C  0715

VCKYTV1HF104Z

CERAM C 100NF 50V 2125SMD

S AA

C  0717

VCEAGA1CW106M

ELEC C   10UF 20%  16V

S AA

C  0718

RC-FZ0156BMZZ

C B32529-B6473K SIEMENS

S AC

C  0722

VCEAGA1CW106M

ELEC C   10UF 20%  16V

S AA

C  0723

VCCCTV1HH101J

CERAM C 100PF 50V 2125SMD

S AA

C  0724

VCCCTV1HH101J

CERAM C 100PF 50V 2125SMD

S AA

C  0725

RC-KZ0160BMZZ

CERAM C  2,2NF  4KV X1Y1

S AC

C  0726

VCEAGA1HW225M

ELEC C  2,2UF 20%  50V

S AA

C  0728

RC-KZ0035CEZZ

CERAM C 220PF 2KV

S AC

C  0801

VCEAGA1AW477M

ELEC C  470UF 20%  10V

S AA

C  0802

VCKYTV1HF104Z

CERAM C 100NF 50V 2125SMD

S AA

C  0803

VCEAGA1AW477M

ELEC C  470UF 20%  10V

S AA

C  0804

VCKYTV1HF104Z

CERAM C 100NF 50V 2125SMD

S AA

C  0805

VCEAGA1HW105M

ELEC C    1UF 20%  50V

S AA

C  0806

VCKYTV1HF104Z

CERAM C 100NF 50V 2125SMD

S AA

C  0807

VCKYTV1HF104Z

CERAM C 100NF 50V 2125SMD

S AA

C  0808

VCKYTV1HF104Z

CERAM C 100NF 50V 2125SMD

S AA

C  0809

VCKYTV1HF104Z

CERAM C 100NF 50V 2125SMD

S AA

C  0810

VCKYTV1HF104Z

CERAM C 100NF 50V 2125SMD

S AA

C  0811

VCKYTV1HF104Z

CERAM C 100NF 50V 2125SMD

S AA

C  0812

VCKYTV1HF104Z

CERAM C 100NF 50V 2125SMD

S AA

C  0813

VCKYTV1HB472K

CERAM C 4,7NF 50V 2125SMD

S AA

C  0814

VCEAGA1HW105M

ELEC C    1UF 20%  50V

S AA

C  0815

VCEAGA1HW225M

ELEC C  2,2UF 20%  50V

S AA

C  0816

VCKYTV1HB472K

CERAM C 4,7NF 50V 2125SMD

S AA

C  0817

VCEAGA0JW107M

ELEC C  100UF 20% 6,3V

S AA

C  0818

VCKYTV1HF104Z

CERAM C 100NF 50V 2125SMD

S AA

C  0819

VCEAGA1HW105M

ELEC C    1UF 20%  50V

S AA

C  0820

VCEAGA1HW105M

ELEC C    1UF 20%  50V

S AA

C  0901

VCKYTV1HF104Z

CERAM C 100NF 50V 2125SMD

S AA

C  1001

VCEAGA0JW477M

ELEC C  470UF 20% 6,3V

S AA

C  1002

VCCCTV1HH220J

CERAM C  22PF 50V 2125SMD

S AA

C  1003

VCCCTV1HH220J

CERAM C  22PF 50V 2125SMD

S AA

C  1004

VCCCTV1HH150J

CERAM C  15PF 50V 2125SMD

S AA

C  1005

VCCCTV1HH150J

CERAM C  15PF 50V 2125SMD

S AA

C  1006

VCCCTV1HH220J

CERAM C  22PF 50V 2125SMD

S AA

C  1007

VCKYTV1HF223Z

CERAM C  22NF 50V 2125SMD

S AA

C  1008

VCKYTV1HF473Z

CERAM C  47NF 50V 2125SMD

S AA

C  1009

VCEAGA1AW476M

ELEC C   47UF 20%  10V

S AA

C  1010

VCKYTV1HF104Z

CERAM C 100NF 50V 2125SMD

S AA

C  1011

VCKYTV1EF224Z

CERAM C 220NF 25V 2125SMD

S AA

C  1012

VCKYTV1HF104Z

CERAM C 100NF 50V 2125SMD

S AA

C  1014

VCEAGA1CW106M

ELEC C   10UF 20%  16V

S AA

C  1015

VCKYTV1EF334Z

CERAM C 330NF 25V 2125SMD

S AB

RESISTORS

R  0201

VRS-TV1JD221J

2125 220 OHM 5% 1/10W SMD

S AA

R  0202

VRS-TV1JD102J

2125   1KOHM 5% 1/10W SMD

S AA

R  0203

VRS-TV1JD102J

2125   1KOHM 5% 1/10W SMD

S AA

R  0204

VRS-TV1JD151J

2125 150 OHM 5% 1/10W SMD

S AA

R  0211

VRS-TV1JD473J

2125  47KOHM 5% 1/10W SMD

S AA

R  0212

VRS-TV1JD472J

2125 4.7KOHM 5% 1/10W SMD

S AA

R  0213

VRS-TV1JD333J

2125  33KOHM 5% 1/10W SMD

S AA

R  0219

VRS-TV1JD222J

2125 2,2KOHM 5% 1/10W SMD

S AA

R  0220

VRS-TV1JD101J

2125 100 OHM 5% 1/10W SMD

S AA

R  0221

VRS-TV1JD000J

2125   0 OHM 5% 1/10W SMD

S AA

R  0222

VRS-TV1JD224J

2125 220KOHM 5% 1/10W SMD

S AA

R  0301

VRD-RA2HD472J

RES  4.7KOHM  5%  1/2W

S AA

R  0302

VRD-RA2HD472J

RES  4.7KOHM  5%  1/2W

S AA

R  0303

VRD-RA2BE333J

RES   33KOHM  5%  1/8W

S AA

R  0304

RR-XZ0204BMZZ

FUS RES  2R2 TAP 5% 1/2W

S AA

R  0305

VRD-RA2HD472J

RES  4.7KOHM  5%  1/2W

S AA

R  0306

VRS-TV1JD104J

2125 100KOHM 5% 1/10W SMD

S AA

R  0307

VRS-TV1JD103J

2125  10KOHM 5% 1/10W SMD

S AA

!

!

Содержание 37GQ-20H

Страница 1: ...es the set should restored to its original condition and only parts identical to those specified should be used MODEL 37GQ 20H Issued 9th June 00 This document has been published to be used for after sales service only ELECTRICAL SPECIFICATION 2 IMPORTANT SERVICE NOTES 3 SERVICE ADJUSTEMENTS 4 PRINTED WIRING BOARDS 11 SCHEMATIC DIAGRAM WAVE FORMS 13 PART LIST 18 TROUBLESHOOTING TABLES 22 ...

Страница 2: ...exposure at close range the following precautions should be observed 1 When repairing the circuit be sure not to increase the high voltage to more than 25 5 KV at beam 1000µΑ for the set 2 To keep the set in a normal operation be sure to make it function on 22 4KV 1 5KV at beam 800µΑ in the case of the set The set has been factory adjusted to the above mentioned high voltage Always check the high ...

Страница 3: ...ERT POS VERT AM Displayed on screen Hexadecimal Decim Range Function 00 03H 00 63H S L VL N 4 43 3 58 SECAM NTSC 4 43 NTSC 3 58 AUTO PNS AUTO PN AUTO 50HZ 60HZ 0 63d 0 63d 0 63d 0 63d 0 63d 0 63d 0 63d 0 15d Indicates operative Service Mode Access to NVM memory Auto Gain Control Auto Gain Starting Point Line PLL time constant Colour system Field Frequency Blue Gain Green Gain Green Cut Red Gain Re...

Страница 4: ...on can be made by pressing button NVM LIST DESCRIPTION BANK ADDRESS DESCRIPTION VALUE 00H 00H ZONE FOR TUNNING INFORMATION BEGIN CAH 3BH ZONE FOR TUNNING INFORMATION END 10H 3CH STAND BY 44H ON 40H OFF 44H 3DH OPTION BYTE 10XXXXXX HOTEL MODE 1 START IN PRG1 NO TUNNING OPTION VOLUME LIMITATION 11XXXXXX HOTEL MODE 2 START IN PRG 1 NO TUNING OPTION VOLUME LIMITATION START IN SCART MODE OUT FROM STDBY...

Страница 5: ...NE CHIP REGISTER 1E 00H 1FH ONE CHIP REGISTER 1F 00H 20H VPOS_50 VERTICAL POSITION 4 3 50 Hz 12H 21H VAMP_50 VERTICAL AMPLITUDE 4 3 50 Hz 0FH 22H VPOS_60 VERTICAL POSITION 4 3 60 Hz 0FH 23H VAMP_60 VERTICAL AMPLITUDE 4 3 60 Hz 0FH 24H HSHIFT_60 HORIZONTAL SHIFT 60Hz 1DH 25H HSHIFT_50 HORIZONTAL SHIFT 50Hz 22H 26H FINVFH STEP FOR FINE TUNING IN VHF BAND 00H 27H VHF1_STEP THICK TUNING STEP FOR VHF1 ...

Страница 6: ...STER 12 00H 13H ONE CHIP REGISTER 13 20H 14H ONE CHIP REGISTER 14 20H 15H ONE CHIP REGISTER 15 00H 16H ONE CHIP REGISTER 16 1FH 17H ONE CHIP REGISTER 17 20H 18H ONE CHIP REGISTER 18 2BH 19H ONE CHIP REGISTER 19 00H 1AH ONE CHIP REGISTER 1A 90H 1BH ONE CHIP REGISTER 1B 90H 1CH ONE CHIP REGISTER 1C 90H 1DH ONE CHIP REGISTER 1D 00H 1EH ONE CHIP REGISTER 1E 00H 1FH ONE CHIP REGISTER 1F 00H 20H VPOS_50...

Страница 7: ...HIP REGISTER 09 99H 0AH ONE CHIP REGISTER 0A 32H 0BH ONE CHIP REGISTER 0B B2H 0CH ONE CHIP REGISTER 0C 32H 0DH ONE CHIP REGISTER 0D 20H 0EH ONE CHIP REGISTER 0E 20H 0FH ONE CHIP REGISTER 0F 18H 10H ONE CHIP REGISTER 10 1FH 11H ONE CHIP REGISTER 11 00H 12H ONE CHIP REGISTER 12 00H 13H ONE CHIP REGISTER 13 20H 14H ONE CHIP REGISTER 14 20H 15H ONE CHIP REGISTER 15 00H 16H ONE CHIP REGISTER 16 1FH 17H...

Страница 8: ...level between 60 and 80 dBµV 2 Apply High Voltage Probe to Pin 8 of CRT socket 3 4 Adjust G2 potentiometer until obtaining 525V 10 5 Check BKGD If it is necessary adjust BKGD according to instructions detailed in the next page 2BH BG_COARSE THICK TUNING ADJUSTMENT FOR L AND BG 0AH 2CH BG_FINE FINE TUNING ADJUSTMENT FOR L AND BG 00H 2DH LP_FINE FINE TUNING ADJUSTMENT FOR L 00H 2EH DELAY SEARCH XXXX...

Страница 9: ...lourmeter in the the left point of Fig 4 f Using brightness and contrast buttons select a luminance of 120 nits g Operate again in Service Mode and select location B GAIN and G GAIN to obtain colour coordinates X 0 290 0 015 Y 0 284 0 015 h Exit Service Mode and check colour coordinates X and Y at 20 and 120 nits It may be necessary to repeat the same procedure or re adjust the cuts as show the be...

Страница 10: ...11 37GQ 20H ...

Страница 11: ...12 37GQ 20H ...

Страница 12: ...µs 200V VERT CH1 FREQ 100KHz CH1 P P 504 V CH1 100V A 2µs 100V VERT CH1 FREQ 100KHz CH1 P P 472 V CH1 2V A 10µs 1 00V VERT CH1 FREQ 15 6KHz CH1 P P 8 56 V CH1 200V A 10µs 200V VERT CH1 FREQ 15 6KHz CH1 P P 1 00 kV CH1 1V A 10µs 1 00V VERT CH1 FREQ 15 6KHz CH1 P P 5 40 V CH1 1V A 5ms 2 50 V VERT THE AREA ENCLOSED BY THIS LINE IS DIRECTLY CONNECTED WITH AC MAINS VOLTAGE WHEN SERVICING THE AREA CONNE...

Страница 13: ...2W R862 15K 2W 7 R899 0 8 R887 2K7 1 2W Q885 TX0180BM C701 470nF 275V FZ0160BM C871 470pF 6 R892 1K C876 4 7nF 2KV R864 15K 2W D811 DX0551 D862 DX0551 A N0304CE R893 1K R881 470 C861 470pF D861 DX0551 4 Q883 TX0180BM C872 470pF L3 QTIPM0017CEFM R898 0 S701 P0588 C873 470pF Q871 TX0181 BF422 3 D860 DX0551 Q887 TX0180BM K QCNW 2835BMZZ D812 DX0551 C878 10uF 200V C715 100nF Q702 TX0218 BC337 40 R710 ...

Страница 14: ...7 180K C503 330nF Q505 2SA1037 VS VS _ IC501 UA741 8 7 6 5 4 3 2 1 220nF R519 8K2 R617 1K Q502 BC635 D503 1N4933 C717 10uF 16V R603 330 1 2W R609 2 2 1 2W Q603 TX0112 BC636 R605 6 8 1 2W Q602 BC635 TX0108BM R523 560 R536 4K7 R516 1K D605 DX0504 1N4934 R613 15K C606 22nF R706 680 R710 220 1 2W C607 100uF 35V C722 10uF 16V R722 120 C610 22nF D607 EX0549BM 7V5 R510 1 1 2W R533 120K Q509 2SA1037 R535 ...

Страница 15: ...6 CVBSIN2 28 BS 29 BEXT 30 GEXT 31 REXT 32 XTAL 53 BTUN 52 HALFCTR 51 FBOSD 50 ROSD 49 FB 33 Y C 34 CHR 35 APR 36 UIN 37 VIN 38 YIN 39 YOUT 40 VOUT 41 UOUT 42 BOUT 43 GOUT 44 ROUT 45 ISENS 46 BOSD 47 GOSD 48 R321 1K R318 15K D301 DX0045BM R312 10K C303 1uF 160V C312 220uF 10V C315 100pF Q503 TX0108BM BC635 R824 75 R825 75 R826 75 Q1003 2SA1037KQ C1015 330nF R1034 150K R1033 4K7 C1014 10uF 16V C101...

Страница 16: ...2uF C408 47uF 16V D401 7 5V D402 7 5V Q401 2SC2412 SC401 CZ2107BM 21 F N0505CE C201 33pF L201 390mH R529 150 1 2W D404 7 5V D405 7 5V D406 7 5V D407 7 5V C205 1uF C815 2 2uF C508 330nF C208 1uF C207 10uF 16V R416 47 R407 75 TQ R401 75 TQ R219 2K2 R220 100 L202 12uH DF R221 0 R202 1K C221 100pF Q204 2SC2412 R814 1M IC801 S T V 2 2 3 6 IFPLL 17 GND IF 18 AM FMOUT 19 VCC 20 CVBS 21 AUDIN 22 IF1 23 IF...

Страница 17: ...DIODE TZMC7V5 TFK SMD S AA D 0402 RH EX0549BMZZ ZENER DIODE TZMC7V5 TFK SMD S AA D 0403 RH EX0546BMZZ ZENER DIODE TZMC5V6 TFK SMD S AA D 0404 RH EX0549BMZZ ZENER DIODE TZMC7V5 TFK SMD S AA D 0405 RH EX0549BMZZ ZENER DIODE TZMC7V5 TFK SMD S AA D 0406 RH EX0549BMZZ ZENER DIODE TZMC7V5 TFK SMD S AA D 0407 RH EX0549BMZZ ZENER DIODE TZMC7V5 TFK SMD S AA D 0409 RH EX0549BMZZ ZENER DIODE TZMC7V5 TFK SMD ...

Страница 18: ...125SMD S AA REF No PARTS DESCRIPTION CODE C 0709 RC KZ0160BMZZ CERAM C 2 2NF 4KV X1Y1 S AC C 0710 VCEAGA1EW227M ELEC C 220UF 20 25V S AA C 0711 VCEAGH2CW107M ELEC C 100MF 20 160V S AE C 0712 VCEAGA1CW227M ELEC C 220UF 20 16V S AA C 0713 VCEAGA1CW227M ELEC C 220UF 20 16V S AA C 0714 VCEAGA1AW477M ELEC C 470UF 20 10V S AA C 0715 VCKYTV1HF104Z CERAM C 100NF 50V 2125SMD S AA C 0717 VCEAGA1CW106M ELEC ...

Страница 19: ... SMD S AA R 0705 VRS TQ2BD331F OX RE 330 OHM 1 1 8W SMD S AA REF No PARTS DESCRIPTION CODE R 0706 VRS TV1JD681J 2125 680 OHM 5 1 10W SMD S AA R 0707 VRC UA2HG825K SOLID R 8 2MOHM 10 1 2W S AB R 0708 VRC UA2HG825K SOLID R 8 2MOHM 10 1 2W S AB R 0710 VRD RA2HD221J RES 220 OHM 5 1 2W S AA R 0711 VRS TV1JD220J 2125 22 OHM 5 1 10W SMD S AA R 0714 VRD RA2HD821J RES 820 OHM 5 1 2W S AA R 0715 VRS TV1JD10...

Страница 20: ... S AB DIODES D 0811 RH DX0551BMZZ DIODE LL4148 TFK SMD S AA D 0812 RH DX0551BMZZ DIODE LL4148 TFK SMD S AA D 0860 RH DX0551BMZZ DIODE LL4148 TFK SMD S AA D 0861 RH DX0551BMZZ DIODE LL4148 TFK SMD S AA D 0862 RH DX0551BMZZ DIODE LL4148 TFK SMD S AA COILS L 0861 VP CF120K0000 PEAK COIL 12UH 10 S AC CAPACITORS C 0860 VCCCTV1HH471J CERAM C 470PF 50V 2125SMD S AA C 0861 VCCCTV1HH471J CERAM C 470PF 50V ...

Страница 21: ...Q1001 IC1001 IC1003 Check the tuner supply and band biases Both must be approx 5V DC Normal YES Is tuning voltage normal at Pin 2 of Tuner Check Picture setting by R C Signal should be received Check the AGC Voltage Pin 1 of Tuner Check the SAW Filter SF201 ...

Страница 22: ...setting by R C Signal should be received NO YES Check D707 C710 NO Is Audio Amplifier muted Check R304 Q301 Q302 NO Check IC801 C301 YES YES Check IC1001 Q305 Does Sound Signal appear at Pin 6 of IC801 Does approx 20V DC appear on C710 ...

Страница 23: ... IC701 Normal Abnormal Check Q601 C711 Check D708 D717 Normal Check R705 R706 R715 D706 Normal Check CRT connector K1 K5 bias Normal Abnormal Check C878 Check IC801 Check Q601 C711 Check Voltage on C705 Approx 325V DC Check D701 D702 D703 D704 C705 Check Voltage on C711 Approx 105V DC Approx 0V ...

Страница 24: ...RTICAL AMP AND VERTICAL LINEARITY Readjust Vertical Size Check D505 D506 Check Q505 Q507 Q509 NEITHER VERTICAL NOR HORIZONTAL SYNCHRONIZATION Check IC801 C815 C816 R818 Vertical size is abnormal Vertical linearity is abnormal Is IC501 bias normal Check R510 Q501 Q502 Q503 ...

Страница 25: ...ite Balance The Picture Colour is Blue or Yellow The Picture Colour is green or magenta The Picture Colour is Red or cyan Check Q871 Q883 and their adjacent circuits Check Q870 Q885 and their adjacent circuits Check Q872 Q887 and their adjacent circuits UNLOCKED COLOUR NO COLOUR SYNCHRONIZATION Check setting of Colour Standard in Service Mode Normal Check IC801 C812 C813 R813 X801 ...

Страница 26: ...27 37GQ 20H NOTES ...

Страница 27: ...22 37GQ 20FP RECICLED PAPER PRINTED BY ON ...

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