Sharp 14LV76 Service Manual
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Sharp 14LV76 Service Manual

Sharp 14LV76 Service Manual

Color television sigma 9100 chassis
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Table of Contents
SHARP
ELECTRICAL SPECIFICATIONS
BLOCK
DIAGRAM
•
INSTALLATION AND SERVICEINSTRUCTIONS
CHASSIS
PRINTED WIRING BOARD ASSEMBLIES
SCHEMATIC
•
REPLACEMENT
•
PACKING
SHARP ELECTRONICS CORPORATION
Executive
Office
Regional O ffices& DistributionCenters: SharpPlaza,
Parts
Centers.
SERVICE
MODEL14LV76
In the interests of user-safety(Required by safety regula-
tions in some countries) the set should be restored to its
original c ondition a ndonlyparts identical to those specified
should
CONTENTS
LAYOUT
DIAGRAMS
PARTS LIST
OF THE SET
.
Sharp Plaza,
20600 S. Alameda St..
430 E. Plainfield
U.S. Subsidiaryof SharpCorporation,Osaka.Japan
P O. Box 405
20600 S. Alameda
430 E. Plainfield
MANUAL
COLOR
TELEVISION
SIGMA
9100
Chassis
No. 14L1
be used.
New Jersey
Mahwah,
New Jersey
Mahwah,
Calif.
Carson,
Illinois
Countryside,
Rd
New Jersey
Mahwah,
Calif.
Carson ,
St.
Illinois
Countryside,
Rd.
14LV76
S56V114LV76//
CHASSIS
3
4
5
6
7
9
17
. 22
(201 ) 529-8200
07430
529-8200
(201 )
07430
(213) 637-9488
90810
(312) 482-9292
60525
(201) 529-8200
07430
637-9488
(213)
90810
(312) 482-9292
60525
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Summary of Contents for Sharp 14LV76

  • Page 1 CHASSIS LAYOUT PRINTED WIRING BOARD ASSEMBLIES SCHEMATIC DIAGRAMS • REPLACEMENT PARTS LIST • . 22 PACKING OF THE SET SHARP ELECTRONICS CORPORATION (201 ) 529-8200 New Jersey 07430 Mahwah, Sharp Plaza, Executive Office 529-8200 (201 ) 07430 New Jersey Mahwah, Regional O ffices&...

  • Page 2: Service Safety Precaution

    14LV76 IMPORTANT SERVICE SAFETY PRECAUTION Servicework shouldbe performedonly by qualifiedservicetechnicians who arethoroughlyfamiliarwith all safety checks and servicing guidelines which follow WARNING When the high voltage regulator is operating proper- 1. For continued safety, no modification of any circuit ly there is no possibility of an X-radiation problem.

  • Page 3: Specifications

    14LV76 IMPORTANT SERVICE SAFETY PRECAUTION (Continued) SAFETY NOTICE Many electrical and mechanical parts in television ceivers have special safety-related characteristics. These characteristics are often not evident from visual inspec- tion, nor can protection afforded by them be necessarily increased by using...
  • Page 4 ANTENNA TERMINAL BOARD 02101 (OTANZCA 2CEZZl INPUT R-Y,'R et_JFFER INTENSITY 0200 R-BUFFER 1-IC200A G-Y/G BUFFER 02004.2005 GREEN INTENSITY 02002 RCB/TV CONTROL,' G-BUFFER SYNC YELLOW BROWN 8-Y/B BUFFER POLARITY SWITCH CONVERTER 02003 02302 B-BUFFER BUFFER/dLK H—POSI T ION IC301 T303 IC2402 VIDEO SOUND DRIVER...

  • Page 5: Installation

    14LV76 INSTALLATION AND SERVICE INSTRUCTIONS Note: (1) When performing any adjustments to resistor controls and transformers use non-metallic screwdriver or TV alignment tools. (2) Before perfoming adjustment, TV set must be on at least 15 minutes. HIGH VOLTAGE CHECK CIRCUIT PROTECTION The entire receiver is protected by a 4.0A fuse (F701),...
  • Page 6 (2) Place the unit in RGB mode using Video/RGB switch viewing level. (SW1109). (3) Adjust focus control (part of T602) for sharp scan- ning lines and/or sharp picture. (3) Turn picture control (a part Of R462) to the mini- mum (CCW) end Of this rotation.

  • Page 7: Printed Wiring Board Assemblies

    14LV76 PRINTED WIRING BOARD ASSEMBLIES 1602 -ROO'- = r ¯ o.sos — R 1806 — 'lelo -RITOI- —Ci_k_— ö •R'204- -m203- *1202, PWBF4557CE F701 •res , 0'30! li Ill OUND 00000 2110 0710 PWB-A Wiring Side...
  • Page 8 14LV76 VIDEO PWB- AUDIO 0 1202 2SC1815(Y) OT ANZ0412CEZZ TV/V SWITCH P12i0 PW B —A RI 209 (DIJNTK4557DEO IC 120 1 IX0260CE RI 606 DECODER C 160 1604 cesv Cl 704 Ri70 — {50v) RI 702 c 1703 C' 606 .C68...
  • Page 9 14LV76 'SS' SW-K0025CE 01201 CH. DOWN Pxol 27CE 2SA1015(Y) EX0161CE sw-K0025CE ISS119 SWITC D1102 voe-uP R 1 208 e ICE I COK RI 103 sw- K0025CE VOL-DOWN 17.50 POWER '2.70 EXC161CE Ex0101CE s w -KOCZSCE SW -K0020CE 1201 1203 1205...
  • Page 10 14LV76 K852 —ReS2— ooocoøeuooeo• PWB-B Wiring Side 2403 -2304 <2308 2/02 •R2007- sw2301 2003 2008 2007—12— 2004 i2042004 — 2109 0202 % 2107 2001 Rzoa ;209 PWBF3 6 C PWB-c Wiring Side...
  • Page 11 14LV76 pwa-A WA I R2030 R? 107 02104 TV/RGB R2110 R2101 2SC18i5(Y) R203 R2113 02001 RZ 103 02101 2SC1815 i 80 TO pwa-A R-BUFFER R-BUFFER C21 04 RZ032 '025 R2121 RZ 1 20 R213B 1 14 as i37CE 2012 R2117...
  • Page 12 14LV76 L202 lxOOS4CE 02t» BIAS IC401 IC302 VHILA7016//-L VICEO C2'7 '00K As'2 .eag2 c3cS 040B C2t9 2SC2236 POWER REC. c:oz FILC R21S -we-c C 440 L 401 ca02 0402 2SClSl T v. vroco VIDEO AMP. 0404 ZSA1015tY1 VIDEO 170V cct7...
  • Page 13 14LV76 22KV(ar.e2mAJ A36uARS3X e.42a 2SC181SY) SAFE V, ?sc454 AE.L_ *210 pvvB_B u'NTK3e63DEC2) k 203 n jew' Q 09 CA 32 CRSB0005CE 2sc206e ouTPJT cet3 ceoo cete seams 0852 2SC2058 GREEN OUTPUT Res. DOWN 0853 c-o:as 2SC20se BLUE OUTPUT 0302 90 V...
  • Page 14 14LV76 IC2002 czooa VHIHD7406//- C 2003 INVERTER — R2008 R2010 IC2001 VHIHD7426//-l VHISN74S04/- R2009 INVERTER INTENSITY CONT. 02009 czool C2002 IC2001 TERMINAL BOARD (4/6) B. or R2012 (OT ANZ0412CEZZ) Rao IS R200 a 70 0200 R201 R?002 02002 R2003 DZ003...

  • Page 15: Voltage Measurement

    14LV76 WAVEFORMS BLOCK DIAGRAM OF IC1401 WAVEFORM MEASUREMENT CONDITIONS: 1. Photographs taken on a standard gated rainbow color bar signal, the tint setting adjusted for proper color. The wave shapes at the red, green and blue cathodes of the picture tube depend on the tint, color level and picture control.
  • Page 16 14LV76 IC2102 {RH-lX04SOCEZZ) IC2101 IVHlNJM4558D-1) Clamp pulse Blanking Dulse generator generator clamp R select output amplifier R control clamp G select output amplifier Pedestal clamp clamp B select output amplifier B control Shadow generator Y select Contrast Brightress output control...
  • Page 17 14LV76 Ref. Part Description Ref. No. Part No. Description AA C610, VCFPPC3CA182J 0.0018 1 .6kV Metalized A R 1601 VRS- VV3DB223J Oxide Film 611, Polypro R 1607 VRS- VV3AB820J Oxide Film R1608 VRS- VV3DB151J Oxide Film C613 VCFPPD2DB334J 0.33 200V...

  • Page 18: Remote Control Transmitter

    14LV76 Ref. Part No. Description Ref. Part Description RESISTORS CONTROLS 8867, VRS- v v 3DB682J 6.8k Oxide Film R2121, RVR-B5137CEZZ 5k(B) Contrast 869, 2129 R.G.B. Pedestal Adj. R2202, B 5138CEZZ 10k (B) R.G.B. Sub Horiz. Position 2135, Blue Bias Adj.
  • Page 19 14LV76 Ref. Part Description Ref. Part Description CABINET PARTS Hi NDM2437CESA Indication Metal, In Door NDP2209CEKA Indication Metal CCABA1543CEK1 Cabinet Complete, Front 1304CEKB Button, Power Available Cabinet, Front GMADT0210CEKA Window GDöRF1455CEKA Door GCABB1559CEKA Cabinet, Rear GMADT0214CEKA Window OANTL 0038CEZZ Antenna,...
  • Page 20 14LV76 Ref. part Description Ref. Part Description D602 DXOIOICEZZ 1.406, MKIOOKOOOO 0603, DX0105TAZZ 1201, TVRIJ(TP) 1 501 D605, EX0116GEZZ 1502, Zener Diode 1510 1601 D606 L 601 DX0130CEZZ LZ0527CEZZ Linearity Coil D607 EX0091CEZZ Zener L 602 DF270KOOOO Diode (HZ22-01T2) 27/11-1...

  • Page 21: Parts List

    MODEL PART 3. DESCRIPTION Contact your nearest SHARP Parts Distributor to order. Forlocation o f SHARP Parts D istributor, Please call T oll-Free; 800-447-4700 (InHawaii and Alaska, please contact local S HARP dealer). MARK: SPARE PARTS-DELIVERY SECTION Ref. Part Description Ref.
  • Page 22 14LV76 PACKING OF THE • Setting positions of the knobs Brightness control 5/10 TV/CATV switch 5/10 RGB/VIDEO Tint control VIDEO contrast control Color control 5/10 10/10 Sync polarity switch Picture control 10/10 H-position control switch 5/10 RU NTK0076CEZZ Antenna Adapter...

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