Sharp 21FL84 Service Manual Download Page 22 | Manualshive

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SCHEMATIC DIAGRAM: CRT Unit

21FL84

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Summary of Contents for 21FL84

Page 1: ...ORMS 19 SCHEMATIC DIAGRAMS 20 PRINTED WIRING BOARD ASSEMBLIES 23 REPLACEMENT PARTS LIST 26 PACKING OF THE SET 31 CONTENTS SPEAKER SIZE 12 x 5 cm 2pcs VOICE COIL IMPEDANCE 16 ohm at 400 Hz ANTENNA INPUT IMPEDANCE VHF UHF 75 ohm Unbalanced TUNING RANGES VHF Channels 2 thru 13 UHF Channels 14 thru 69 CATV Channels 1 thru 125 EIA Channel Plan U S A POWER INPUT AC 110 220 V 50 60 Hz POWER RATING 88W PI...

Page 2: ...xceed 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 locate the ...

Page 3: ...a 0 15µF capacitor in 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 BEFORE RETURNING THE RECEIVER Fire Shock Hazard Before returning the receiver to the user perform the following ...

Page 4: ...MENU Press Accesses MAIN MENU Press again Exits MAIN MENU VIDEO IN 2 L AUDIO R CHANNEL UP DOWN Selects next higher channel Selects next lower channel VOLUME UP DOWN Increases sound Decreases sound Note The above shaded buttons on the Remote Control glow in the dark To use the glow in the dark display on the remote control place it under a fluorescent light or other lighting The phosphorescent mate...

Page 5: ... 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 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 ano...

Page 6: ... MENU SERVICE MODE 6 AFT processing is disabled during service mode PLL setting data is set to fo data 7 All user data are set to default during service mode FAO and SPEAKER user settings are off and on respectively in service mode Energy Save is off 8 Sleep timer View timer on timer and off timer are inactivated in Service mode 9 Sound is muting in service mode except at Adjustment Items V20 M01 ...

Page 7: ... CUTOFF 1 Chip R CUTOFF 0 255 64 V12 G CUTOFF 1 Chip G CUTOFF 0 255 64 V13 B CUTOFF 1 Chip B CUTOFF 0 255 64 V14 R DRIVE 1 Chip R DRIVE 0 127 64 V15 B DRIVE 1 Chip B DRIVE 0 127 64 V16 SUB COLOR YUV 1 Chip COLOR 0 127 64 V17 SUB TINT YUV 1 Chip BASEBAND TINT 0 127 64 V18 CC POS MICON CC POS 0 255 32 V19 SCREEN CUT OFF 1 Chip CUT OFF 0 2 0 V20 SUB VOL 1 Chip A ATT 0 127 127 V21 H VCO 1 Chip H VCO 0...

Page 8: ...et as AD input 4 By decreasing RF AGC 1chip data from current RF AGC adjustment value to 0 AFT input voltage becomes the maximum setting value 5 Increase RF AGC 1chip data when AFT input voltage is at max 0 3V point adjustment is completed 6 When adjustment completed OSD display and RF AGC self adjustment status data of EEPROM are updated 7 Intelligent monitor output and IM input mode are recovere...

Page 9: ...SET R DRI OFFSET 32 32 0 F24 R DRI R OFFSET R DRI OFFSET 32 32 0 F25 R DRI B OFFSET R DRI OFFSET 32 32 0 F26 B DRI R2 OFFSET B DRI OFFSET 32 32 0 F27 B DRI R OFFSET B DRI OFFSET 32 32 0 F28 B DRI B OFFSET B DRI OFFSET 32 32 0 F29 V FREE 1 Chips V FREE 0 1 0 F30 GAMMA 1 Chips GAMMA 0 3 0 F31 TRAP TV 1 Chips TRAP FINE 0 3 2 F32 TRAP AV 1 Chips TRAP FINE 0 3 2 F33 H FREE 1 Chips H FREE 0 1 0 F34 1W T...

Page 10: ... F61 OFFSET ADJ TINT 1 Chips TINT 32 32 0 F62 OFFSET ADJ TINT YUV 1 Chips BASEBAND TINT 32 32 0 F63 TIMER4 LOW SPEED 1 Chips TIMER4 VALUE 0 225 50 F64 TIMER4 HIGH SPEED 1 Chips TIMER4 VALUE 0 225 125 F65 R CUT YUV 1 Chips R CUT OFFSET 63 63 0 F66 G CUT YUV 1 Chips G CUT OFFSET 63 63 0 F67 B CUT YUV 1 Chips B CUT OFFSET 63 63 0 F68 R DRI YUV 1 Chips R DRI OFFSET 63 63 0 F69 B DRI YUV 1 Chips B DRI ...

Page 11: ...ystem AV2 system 1 015 MTS Without MTS With MTS 1 016 TONE CTRL Without S ADJ With S ADJ 1 017 AUTO OFF Without AUTO OFF With AUTO OFF 1 018 INIT LANG ENGLISH SPANISH 1 019 SETUP FLAG NO SET UP AUTO SET UP 1 020 AV FR 0 NO AV 1 REAR 2 FRONT 3 REAR FRONT 3 021 AV3 S IN Without AV3 S IN With AV3 S IN 0 022 COMB Without COMB With COMB 0 023 AUTO INPUT Without AUTO INPUT With AUTO INPUT 1 024 CLOCK Wi...

Page 12: ...02 SUB TINT TINT 0 127 64 V03 SUB COLOR COLOR 0 127 64 V04 SUB BRIGHT BRIGHT 0 255 128 V05 SUB SHARP VIDEO TONE 0 63 32 V06 V SHIFT V SHIFT 0 7 4 V07 H SHIFT H PHASE 0 31 16 V08 RF AGC RF DELAY 0 127 127 V09 V SIZE V SIZE 0 63 32 V10 PIF VCO VIF VCO 0 63 32 V11 R CUTOFF R CUTOFF 0 255 127 V12 G CUTOFF G CUTOFF 0 255 127 V13 B CUTOFF B CUTOFF 0 255 127 V14 R DRIVE R DRIVE 0 127 64 V15 B DRIVE B DRI...

Page 13: ... R2 R DRI OFFSET 32 32 0 F24 R DRI R R DRI OFFSET 32 32 0 F25 R DRI B R DRI OFFSET 32 32 0 F26 B DRI R2 B DRI OFFSET 32 32 0 F27 B DRI R B DRI OFFSET 32 32 0 F28 B DRI B B DRI OFFSET 32 32 0 F29 V FREE V FREE 0 1 0 F30 GAMMA GAMMA 0 3 0 F31 TRAP TV TRAP FINE 0 3 2 F32 TRAP AV TRAP FINE 0 3 2 F33 H FREE H FREE 0 1 0 F34 1W TV V WINDOW 0 1 0 F35 1W AV V WINDOW 0 1 0 F36 YLPF YSW LPF 0 1 1 F37 BS D B...

Page 14: ...04 SPEAKER SPEAKER DISABLE ENABLE 0 005 FAO FAO DISABLE ENABLE 0 006 P PREF P REF DISABLE ENABLE 0 007 UNIV UNIV DISABLE ENABLE 0 008 VIEW TIMER VIEW TIMER DISABLE ENABLE 1 009 EZ SETUP EZ SETUP AUTO PRESET 0 010 PON CH POWER ON DISABLE ENABLE 0 011 FAV COL FAV COL COL TEMP 1 012 COMPONENT COMPONENT DISABLE ENABLE 0 013 AV AV DISABLE ENABLE 1 014 AV2 AV1 AV2 1 015 MTS MTS DISABLE ENABLE 0 016 TONE...

Page 15: ...6 5 4 3 2 1 A B C D E F G H CHASSIS LAYOUT 21FL84 15 ...

Page 16: ...A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 MAIN BLOCK DIAGRAM 21FL84 16 ...

Page 17: ...10 11 12 13 14 15 16 17 18 19 21FL84 17 ...

Page 18: ...6 5 4 3 2 1 A B C D E F G H CRT BLOCK DIAGRAM 21FL84 18 ...

Page 19: ...asured 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 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 ...

Page 20: ...A B C D E F G H 10 9 8 7 6 5 4 3 2 1 SCHEMATIC DIAGRAM MAIN 1 Unit 21FL84 20 ...

Page 21: ...17 16 19 18 15 14 13 12 11 10 21FL84 21 ...

Page 22: ...6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM CRT Unit 21FL84 22 ...

Page 23: ...6 5 4 3 2 1 A B C D E F G H PWB A MAIN Unit Wiring Side PRINTED WIRING BOARD ASSEMBLIES 21FL84 23 ...

Page 24: ...1 5 R4 3 7 RJ 1 2 C1 0 0 4 I C1 0 0 3 R5 0 4 C5 1 8 R5 2 8 C5 1 9 R5 2 0 RJ 3 2 RJ 3 1 Q6 0 4 R6 6 2 RJ 3 0 Q8 0 1 R8 0 1 RJ 2 9 C1 8 5 5 C1 0 1 3 C1 0 1 1 C1 0 0 9 R8 1 7 R8 0 7 C8 1 4 R1 0 6 4 R1 0 6 3 Q8 0 4 R8 4 2 R1 0 6 5 C8 2 3 R8 1 5 C1 0 0 8 C8 1 5 R8 1 4 R8 1 6 R8 1 2 R1 0 6 2 C8 1 6 R1 0 6 1 C8 2 6 R8 3 2 C8 1 9 C8 2 1 D1 0 8 6 R8 4 7 C8 2 8 C8 3 0 R8 4 4 C8 3 1 C8 3 3 C8 3 2 R8 4 5 C1 8...

Page 25: ...6 5 4 3 2 1 A B C D E F G H PWB B CRT Unit Wiring Side 21FL84 25 ...

Page 26: ...4F WE2 AD IC3002 VHIMM1501XN 1Y X MM1501XN AD Q201 VS2SC2735 1EY X 2SC2735 AB Q601 VS2SC2235Y 1E X 2SC2235 Y AE Q602 VSTT2140 F X TT2140LS AF Q603 VS2SC3198 G 1 X 2SC3198 G AB Q604 VS2SD601AR 1Y X 2SD601AR AA Q751 VS2SD468 C 1 X 2SD468ACTZ AB Q752 VS2SD468 C 1 X 2SD468ACTZ AB Q753 VS2SC3198 G 1 X 2SC3198 G AB Q754 VS2SD468 C 1 X 2SD468ACTZ AB Q801 VS2SD601AR 1Y X 2SD601AR AA Q804 VS2SB709AR 1Y X 2...

Page 27: ...477M X 470 35V EL AC C512 VCKYPA2HB102K X 1000p 500V Ceramic AA C513 RC EZA332WJZZ X 1000 35V EL AC C514 VCFYSA1JB273J X 0 027 63V M Poly AB C515 VCEACA1HC335J X 3 3 50V EL AC C518 VCKYCY1HF103ZY X 0 01 50V Ceramic AA C601 VCQYTA1HM563J X 0 056 50V Mylar AA C602 VCEA0A1HW475M X 4 7 50V EL AA C603 VCEA0A1HW105M X 1 50V EL AA C604 VCEA0A2EW336M X 33 250V EL AD C606 VCKYPA2HB102K X 1000p 500V Ceramic...

Page 28: ... 1 16W M Ox AA R209 VRS CY1JF392JY X 3 9k 1 16W M Ox AA R216 VRS RG3LB333J X 33k 3 0W M Ox AB R220 VRS CY1JF221JY X 220 1 16W M Ox AA R301 VRS CY1JF102JY X 1k 1 16W M Ox AA R302 VRN RL3DBR10J X 0 10 2W M Film AB R303 VRS CY1JF473JY X 47k 1 16W M Ox AA R304 VRD RA2BE683JY X 68k 1 8W Carbon AA R305 VRS CY1JF274JY X 270k 1 16W M Ox AA R311 VRD RA2BE103JY X 10k 1 8W Carbon AA R314 VRS CY1JF122JY X 1 2...

Page 29: ...Carbon AA R1046 VRS CY1JF101JY X 100 1 16W M Ox AA R1047 VRS CY1JF183JY X 18k 1 16W M Ox AA R1048 VRS CY1JF101JY X 100 1 16W M Ox AA R1049 VRS CY1JF183JY X 18k 1 16W M Ox AA Ref No Part No Description Code R1051 VRD RA2BE473JY X 47k 1 8W Carbon AA R1054 VRD RA2BE101JY X 100 1 8W Carbon AA R1055 VRS CY1JF332JY X 3 3k 1 16W M Ox AA R1056 VRS CY1JF332JY X 3 3k 1 16W M Ox AA R1059 VRS CY1JF103JY X 10k...

Page 30: ... 3 3k 1 2W Carbon AA R889 VRD RA2BE821JY X 820 1 8W Carbon AA R891 VRD RA2BE561JY X 560 1 8W Carbon AA R892 VRD RA2BE391JY X 390 1 8W Carbon AA R894 VRD RA2BE152JY X 1 5k 1 8W Carbon AA R895 VRD RA2BE561JY X 560 1 8W Carbon AA P860 QPLGN0461CEZZ X plug 4 PINS AA P880 QPLGN0561CEZZ X plug 5 PINS AB SC851 QSOCV0933CEZZ X SOCKET CRT AD ACC701 QACCZA020WJPZ X AC Cord AG SP301 VSP1205PB09WA X SPEAKER A...

Page 31: ...PACKING OF THE SET 21FL84 21FL84 31 ...

Page 32: ... M E M O 21FL84 32 ...

Page 33: ...eans electronic mechanical photocopying recording or otherwise without prior written permission of the publisher QRC0008 L June 2004 Modify SEMEX J B Design and Production Information Design SEM Production SEMEX SHARP ELECTRONICA MEXICO S A DE C V Quality Reliability Control Center Blvd SHARP No 3510 Parque Industrial Rosarito Playas de Rosarito México B C 22710 21FL84 ...

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