Sharp 14LK14, Service Manual

Page 1: ...THE SET 27 Page CONTENTS SERVICE MANUAL MODEL POWER INPUT 110 120 V AC 50 60 Hz POWER RATING 53 W PICTURE SIZE 574cm2 88 97sq inch CONVERGENCE Magnetic SWEEP DEFLECTION Magnetic FOCUS Hi Bi Potential Electrostatic INTERMEDIATE FREQUENCIES Picture IF Carrier Frequency 45 75 MHz Sound IF Carrier Frequency 41 25 MHz Color Sub Carrier Frequency 42 17 MHz Nominal AUDIO POWER OUTPUT RATING 1W at 10 dist...

Page 2: ...oes 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 shooting and taking test measurements on a receiver with excessive high voltage avoid being unnecessarily close to the receiver Do not operate the receiver longer than is necessary to lo...

Page 3: ...rks mechanical insulators and etc 3 To be sure that no shock hazard exists check for leakage current in the following manner Plug the AC cord directly into a 110 220 volt AC outlet Do not use an isolation transformer for this test Using two clip leads connect a 1 5k ohm 10 watt resistor paralleled by a 0 15µF capacitor in series with all exposed metal cabinet parts and a known earth ground such as...

Page 4: ...Pressž Mutes sound Press againž Restores sound CLOSED CAPTION appears when sound is muted MENU Press ž Accesses MAIN MENU Press again ž Exits MAIN MENU ON TIMER POWER indicator SENSOR AREA FOR REMOTE CONTROL VIDEO AUDIO TERMINALS VIDEO AUDIO terminals are also provided on the rear IN Note The above shaded buttons on the Remote Control glow in the dark To use the glow in the dark display on the rem...

Page 5: ... 5 V 5 Apply external 27 9V DC at TP653 by using an external DC supply TV must be shut off 6 To reset the protector unplug the AC cord and make a short circuit between TP651 and TP652 Now make sure that normal picture appears on the screen 7 If the operation 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 CHE...

Page 6: ...t menu to ensure customer controls are in their proper reset position 2 Service item 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 item will vary in increments of one 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 the service mode and e...

Page 7: ...RI SUB SHARPNESS SUB SHP MAX HOTEL VOLUME HTL VOL HOTEL PROGRAM NO HTL PRG BLUE BACK CONTRAST BB CON OSD GRB REFERENCE RGB BLACK LEVEL OFFSET R CUT R BLACK LEVEL OFFSET G CUT G CATHODE DRIVE LEVEL CDL AGC GEOMETRIC MODE AGC TAKE OVER POINT AGC VERTICAL SLOPE V LIN VERTICAL AMP V AMP VERTICAL SHIFT V CENT VERTICAL ZOOM V ZOOM HORIZONTAL SHIFT H CENT EAST WEST WIDTH H SIZE HORIZONTAL PARALLELOGRAM E...

Page 8: ... FFI ENABLE VERTICAL GUARD EVG EHT TRACKING MODE EHT OVERSCAN SWITCH OFF OSO AUTO COLOUR LIMIT ACL FORCED COLOUR ON FCO VIDEO MUTE AT IDENT LOSS VMI VIDEO MUTE AT PROGRAM SOURCE CHANGE VMC HOTEL MODE HTL GAIN FM DEMODULATOR BTSC CHARGE PUMP CP FM WINDOW SELECTION FMWS SOUND MUTE BIT 0 SM0 SOUND MUTE BIT 1 SM1 IF AGC SPEED BIT 0 AGC0 IF AGC SPEED BIT 1 AGC1 PHI 1 TIME CONSTANT FOR FE FOA FE PHI 1 T...

Page 9: ... SHARPNESS 0 63 32 FIX must be 24 HTL VOL MAX HOTEL VOLUME 0 63 32 FIX HTL PRG HOTEL PROGRAM NO 0 125 or 125 for none 255 FIX BB CON BLUE BACK CONTRAST 0 15 10 FIX must be 5 RGB OSD GRB REFERENCE 0 15 15 FIX must be 15 CUT R BLACK LEVEL OFFSET R 0 63 32 ADJ CUT G BLACK LEVEL OFFSET G 0 63 32 ADJ CDL CATHODE DRIVE LEVEL 0 15 0 FIX must be 2 DL TV Y D TIME TV YD 0 15 12 FIX must be 2 DL AV Y D TIME ...

Page 10: ...nable 0 FIX SPEAKER SPEAKER ON OFF 0 disable or1 enable 0 FIX FAO FIXED AUDIO OUT 0 disable or1 enable 0 FIX VIEW TM VIEW TIMER 0 disable or1 enable 1 FIX FRENCH FRENCH LANGUAGE 0 disable or1 enable 1 FIX EZ SETUP EZ SETUP AUTOPRESET 0 AUTOPRESET or 1 FIX 1 EZ SETUP W TEMP WHITE TEMP OR FAVORITE COLOR 0 FC or 1 WT 0 FIX AV AV ENABLED OR DISABLED 0 without ext source or 0 FIX 1 with external source...

Page 11: ...key till the picture is centered 1 Call the V AMP mode 2 Increase or decrease V AMP by Volume key to set overscan of 10 0 typical Adjustment Spec 10 0 range 1 FIXED DATA NO NEED TO ADJUST 1 Call the H CENT mode 2 Increase or decrease H CENT by Volume key to center the picture horizontal 1 2 3 4 5 Focus adjustment 1 Receive the Monoscope Pattern signal 2 Press R C to set Picture NORMAL condition 3 ...

Page 12: ...ightly brighter than line 1 2 and 3 and finally line 5 will be the brighter than line 4 2 1 2 3 are in same black level WHITE BAL ANCE SERV ICE MODE ADJ I2C BUS CONTROL 3 11 600 K X 0 273 Y 0 280 MINOLTA COLOUR ANALYZER CA 100 NOTE Above DATA can be UP DOWN by volume key LOW HIGH 14 1 8cd m2 115cd m2 11 600 K DRI GW DRI GS DATA 5 DRI BW DRI BS DATA 5 1 Receive the Monoscope Pattern signal 2 Press ...

Page 13: ...13 14LK14 CHASSIS LAYOUT 6 5 4 3 2 1 A B C D E F G H ...

Page 14: ...14 14LK14 6 5 4 3 2 1 A B C D E F G H BLOCK DIAGRAM ...

Page 15: ...phs taken on a standard gated 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 2 indicates waveform check points See chart waveforms are measured from point indicated to chassis ground å AND SHADED COMPONENTS SAFETY RELATED PARTS MARK X RAY RELATED PARTS This circuit...

Page 16: ...8 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM MAIN 1 Unit 10 9 7 6 16 14LK14 ...

Page 17: ...17 17 16 19 18 15 14 13 12 11 10 14LK14 ...

Page 18: ...6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM CRT Unit 14LK14 18 ...

Page 19: ...19 14LK14 6 5 4 3 2 1 A B C D E F G H PWB B CRT Unit Wiring Side PWB B CRT Unit Chip Parts Side PRINTED WIRING BOARD ASSEMBLIES ...

Page 20: ...20 14LK14 6 5 4 3 2 1 A B C D E F G H PWB A MAIN Unit Wiring Side ...

Page 21: ...21 14LK14 6 5 4 3 2 1 A B C D E F G H PWB A MAIN Unit Chip Parts Side ...

Page 22: ...B709AR 1Y X 2SB709AR AB Q802 VS2SB709AR 1Y X 2SB709AR AB D201 RH EX0676GEZZY X Zener Diode 32V AB D302 VHD1SS119 1Y X Diode AA U D331 RH DX0302CEZZY X Diode AB D502 RH EX0615GEZZY X Zener Diode 5 6V AB D503 VHD1SS119 1Y X Diode AA D505 RH DX0441CEZZY X Diode AB D508 RH DX0131CEZZY X Diode AB D509 RH EX0665GEZZY X Zener Diode 5V AB D511 VHD1SS119 1Y X Diode AA D531 RH EX0627GEZZY X Zener Diode 8 2V...

Page 23: ...05M X 1 50V EL AB C604 VCEA0A2EW106M X 10 250V EL AB C605 VCKYPA2HB102K X 1000p 500V Ceramic AB C606 VCFPVC2DB334J X 0 33 250V M Poly AB C607 VCFPVC3ZA532H X 5300p 1 5kV M Poly AB C608 VCKYPA2HB102K X 1000p 500V Ceramic AB C610 VCEA0A1CW108M X 1000 16V EL AB C611 VCEA0A1EW476M X 47 25V EL AB C612 VCEA0A1CW477M X 470 16V EL AB C620 VCKYPA2HB102K X 1000p 500V Ceramic AB C640 VCFYSB2EB823J X 0 082 25...

Page 24: ...on Code R335 VRS CY1JF564JY X 560k 1 16W M Ox AA R364 VRS CY1JF000JY X 00 1 16W M Ox AA R431 VRS CY1JF101JY X 100 1 16W M Ox AA R432 VRS CY1JF750JY X 75 1 16W M Ox AA R501 VRD RA2BE272JY X 2 7k 1 8W Carbon AA R502 VRD RM2HD102JY X 1 0k 1 2W Carbon AA R503 VRN RL3DB2R7J X 2 7 2W M Film AB R504 VRS CY1JF181JY X 180 1 16W M Ox AA R505 VRS CY1JF102JY X 1k 1 16W M Ox AA R506 VRS RG3AB331J X 330 1W M Ox...

Page 25: ...B FH702 QFSHD1014CEZZ X FUSE CLIP AB J402 QJAKE0210CE04 X Jack Video AV In2 AB J403 QJAKE0210CE09 X Jack Audio L AV In2 AB J409 QJAKF0074CEZZ X Jack Rear AV In AC P302 QPLGN0241CEZZ X plug 2 PINS AB P601 QPLGN0660CEZZ X plug 6 PINS AB SWITCHES MISCELLANEOUS PARTS PWB B DUNTKA542WEA0 CRT UNIT Ref No Part No Description Code P603 QPLGN0361CEZZA X plug 3pin AB P701 QPLGN0260CEZZ X plug 2pin AB P702 Q...

Page 26: ...0GJZZ X Caution label AA MISCELLANEOUS PARTS SUPPLIED ACCESSORIES Ref No Part No Description Code SPAKCB304WJZZ X Packing case AK SPAKP0104GJZZ X Wrapping Paper AC SPAKX0123GJZZ X Packing foam AE SSAKA0101GJZZ X Plastic bag AB 1 CCABA0133WEH6 X Front Cabinet Ass y AW 1 1 Not Available Front Cabinet 1 2 JBTN 0112GJSC X Button power AG 1 3 MSPRC0005PEFW X Spring AA 1 4 JBTN 0111GJSC X Control button...

Page 27: ...No Description Code PACKING OF THE SET REAR Use 12 staples fix the packing case Use tape to fix top side of pack case Packing Case FRONT Buffer Material Wrapping Paper Polyethylene Bag Operation Manual Infrared R C Unit Batteries MARK Not Replacement Items ...

Page 28: ...any means electronic mechanical photocopying recording or otherwise without prior written permission of the publisher SHARP ELECTRONICA MEXICO S A DE C V Blvd SHARPNo 3510ParqueIndustrialRosarito Quality Reliability Control Center Playas de Rosarito México B C 22710 QRC0006 L MAY 2004 Design and Production Information Production SEMEX J B Design base JAPAN Changes SEMEX ...