Sharp 37GQ-20H Service Manual

137GQ-20HSERVICE MANUALSHARP CORPORATIONCONTENTS PAL SYSTEM COLOUR TELEVISION SEJB37GQ20H02SQUAD CHASSISIn the interest

1137GQ-20H

1237GQ-20H

1337GQ-20HWAVEFORM MEASUREMENT CONDITION:Colour bar genetator signal of 70 dB from RF input.1. The unit of resistance «ohm»is omitted (K=1000ohms. M=

1437GQ-20H22533FOCUS11L344-10V+10VJF13JF15QPWBF7287BMN0-2+20V+8V+10V+105VS1001K0079GES1002K0079GEC70210nF(250V)KZ0029C70310nF(250V)KZ0029C70410nF(250V

1537GQ-20HH.V.FOCOG212341+8V+8V+5V B-10VSERJ77+7V-10V+5V A-25V+10VPC3+105V+105V..C70815nFC7092n2(4Kv)C603220uF(10V)C604220uF(10V)D706C6V2EX0584R704100

1637GQ-20HRMC00112345+20VJF16AUDIOVTBHBUVERTBGGBGBGB+20VBGVERTII-25V+105V+5V BRRRRRBL+105VVSYNCVSYNCSDAAGCFBVSYNCSSFLBSCLFLBL/L'FBPC5.32CU0222CE1

1737GQ-20HR OUTR INL OUTL INSSFSV OUTV INIFOUTIF OUT5VBLBHBUVTAGCRGBSHARPELECTRONICA ESPANA S.A.NOMBRE CODIGOESCALAMODELOFECHA REVISIONES N123456FECHA

1837GQ-20HMARK *:SPARE PARTS DELIVERY SECTIONREF No. PARTS DESCRIPTION * CODEPICTURE TUBEVB34EAC0136*N CRT 14" A34EAC01X36 S BZRCILG0415BMZZ

1937GQ-20HREF No. PARTS DESCRIPTION * CODEL 0801 VP-DF3R3K0000 PEAK COIL 3,3UH 10% S AAL 0802 VP-NM3R3MR19N COIL 3,3UH SMD S ACL 1001 VP-DF100K000

2037GQ-20HREF NoPARTS DESCRIPTION * CODER 0310 VRS-TV1JD101J 2125 100 OHM 5% 1/10W SMD S AAR 0311 VRS-TV1JD104J 2125 100KOHM 5% 1/10W SMD S AAR 031

337GQ-20HIMPORTANT SERVICE NOTESSERVICING OF HIGH VOLTAGE SYSTEM AND PICTURE TUBEMaintenance and repair of this receiver should be done by qualified s

2137GQ-20H1.611.41.31.21.52REF No PARTS DESCRIPTION * CODER 1028 VRD-RA2BE101J RES 100 OHM 5% 1/8W S AAR 1029 VRD-RA2BE101J RES 100 OHM 5% 1/8

2237GQ-20HTROUBLESHOOTING TABLES.NO PICTURENOCheck Q1001, IC1001, IC1003Check the tuner supply and band biases. Both must be approx. 5V DCNormalYESIs

2337GQ-20HNO SOUNDCheck Sound setting byR/C. Signal should bereceived.NO YESCheck D707, C710NOIsAudio Amplifiermuted?Check R304, Q301, Q302NOCheck IC8

2437GQ-20HNO RASTERCheck F701 NormalFuse BlownNormalReplace FuseFuse Blown againCheck IC701NormalAbnormalCheck Q601, C711Check D708, D717NormalCheck R

2537GQ-20HNO VERTICAL SCANYES NO Check D709, D710, IC501DEFECTIVE VERTICAL AMP.AND VERTICAL LINEARITYReadjust Vertical Size. Check D505, D506Check

2637GQ-20HNO SPECIFIC COLOURIssome colourproduced in B/W Broadcast reception?YESNOCheck IC801, C812,C813, R813, X801Is the white balance properly adju

2737GQ-20HNOTES:

2237GQ-20FPRECICLED PAPERPRINTED BY: ON:

437GQ-20HSERVICE ADJUSTMENT•SERVICE MODE FUNCTIONThis mode funtion is provided to assist with the settings of those adjustments that may vary from one

537GQ-20HBear in mind that, for storage location indication a hexadecimal numerical system is used, instead of adecimal system.0, 1, 2, 3, 4, 5, 6, 7,

637GQ-20H03H 00H ONE CHIP REGISTER 00: 80H01H ONE CHIP REGISTER 01: 05H02H ONE CHIP REGISTER 02: 9FH03H ONE CHIP REGISTER 03: 20H04H ONE CHIP REGISTER

737GQ-20H35H VHF1HIGH: UPPER WINDOW LIMIT FOR VHF1 00H36H PRG_NUMBER: CURRENT PROGRAMME NUMBER 01H37H WAITSUP: UPPER LIMIT DELAY TIME FOR AUTOSEARCH.

837GQ-20H2FH VHF1_SP: STEP FOR AUTO SEARCH IN VHF1 BAND 0AH30H VHF3_SP: STEP FOR AUTO SEARCH IN VHF3 BAND 05H31H UHF_SP: STEP FOR AUTO SEARCH IN VHF B

937GQ-20H•••••PIF/AGC Adjustement•••••Screen AdjustementApply mains voltage of 220V AC/50HZ to TV.1. Receive Philips pattern signal to a levelbetween

1037GQ-20H1. HOR POSa) Receive Philips pattern signal.b) When ∧ button is pressed, picture moves to the left.c) When ∨ button is pressed, pictur