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Sharp 14V-L70M, Service Manual

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Sharp 14V-L70M Service Manual Download Page 20

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14V-L7

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PWB-A: MAIN Unit (Chip Parts Side)

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Summary of Contents for 14V-L70M

Page 1: ...TS LIST 24 PACKING OF THE SET 31 ELECTRICAL SPECIFICATIONS POWER INPUT 110 230 V AC 60Hz POWER RATING 55W PICTURE SIZE 574 cm 2 89 sq inch CONVERGENCE Magnetic SWEEP DEFLECTION Magnetic FOCUS QPF 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 3 W SPEAKER SIZE ...

Page 2: ...OLTAGE LIMITS 1 Be sure all service personnel are aware of the procedures and instructions covering X radiation The only potential source of X ray in current solid state TV receivers is the picture tube However the picture tube does not emit measurable X Ray radiation if the high voltage is as specified in the High Voltage Check instructions It is only when high voltage is excessive that X radiati...

Page 3: ...hassis antenna metal cabinet screw heads knobs and control shafts escutcheon and etc and measure the AC voltage drop across the resistor All checks must be repeated with the AC line cord plug connection reversed If necessary a non polarized adapter plug must be used only for the purpose of completing these check Any current measured must not exceed 0 5 milliamp Any measurements not within the limi...

Page 4: ...U Press again ExitsMAIN MENU DISPLAY Press Displays receivingchannelfor 4 seconds Press again Removes display T emporarily displays receiving channel when in Closed Caption mode Front Panel Basic Remote Control Functions POWER Press On Press again Off REMO TE KEYPAD Accesses an y channel fromkeypad FLASHBACK Returns to pre vious channel VOLUME UP DOWN Increases sound Decreases sound In men u mode ...

Page 5: ...llows 1 Apply 230V AC using a variac transformer for accurate input voltage 2 Allow for warm up and adjust all customer controls for normal picture and sound 3 Receive a good local channel 4 Connect a digital voltmeter to TP653 and make sure that the voltmeter reads 21 1 1 5V 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 A...

Page 6: ...ion in the video adjustment 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 en...

Page 7: ...UT G MAX HOTEL VOLUME HTL VOL HOTEL PROGRAM NO HTL PRG W P BLUE OFFSET HIGH OSD GRB REFERENCE RGB BLACK LEVEL OFFSET R CUT R SUB SHARPNESS SUB SHP W P BLUE MH STD DRI B MH OFFSET BLUE TONE DRI B HI W P RED MH STD DRI R MH W P GREEN OFFSET LOW DRI G LO OFFSET RED TONE DRI G ML W P BLUE OFFSET ML OFFSET RED TONE DRI B ML W P RED OFFSET LOW DRI R LO W P RED OFFSET ML OFFSET RED TONE DRI R ML W P GREE...

Page 8: ...V Y D TIME AV YD DL AV BASS LEVEL BASS STEREO SEPARATION ADJUSTMENT 3kHZ SPECTRAL ATTENUATE INPUT SIGNAL LEVEL ATT VCO FREE RUNNING FREQUENCY ADJ VCO REAL TIME CLOCK ON TIMER CLOCK TREBLE LEVEL TREBLE DEMO MODE DEMO UNIVERSAL PLUS UNIV SPEAKER ON OFF SPEAKER FRENCH LANGUAGE FRENCH EZ SETUP AUTOPRESET EZ SETUP WHITE TEMP OR FAVORITE COLOR W TEMP AV ENABLED OR DISABLED AV RATIO PRE AND OVERSHOOT BIT...

Page 9: ...32 32 32 25 32 32 32 0 32 32 32 32 32 32 32 32 32 32 14 32 32 32 0 63 0 255 0 15 0 63 0 15 0 63 Y D TIME AV YD INITIAL DEFAULT LANGUAGE 0 63 0 63 0 15 0 15 0 63 0 125 or 125 for none 0 15 0 15 0 63 0 63 0 63 0 63 0 63 0 63 0 63 0 63 0 63 0 63 0 63 0 63 0 63 0 63 0 63 0 63 0 63 0 63 0 63 0 63 0 63 0 63 HORIZONTAL BOW S CORRECTION 0 63 0 63 0 63 0 63 EAST WEST PARABOLA WIDTH EAST WEST UPPER CORNER P...

Page 10: ...OCK ON TIMER 0 disable or 1 enable 0 0 disable or 1 enable 1 E SAVE ENERGY SAVE 0 disable or 1 enable 1 FIX P_PREF PERSONAL PREFERENCE PROGRAM 0 disable or 1 enable 0 FIX FIX FIX UNIV UNIVERSAL PLUS SPEAKER SPEAKER ON OFF 0 disable or 1 enable 0 0 disable or 1 enable 0 FAO FIXED AUDIO OUT 0 disable or 1 enable 0 FIX VIEW TM VIEW TIMER 0 disable or 1 enable 1 FIX FIX must be 1 FIX FRENCH FRENCH LAN...

Page 11: ... V LIN mode 3 Increase or decrease V LIN by Volume key till the horizontal line in the center of monoscope is just at the position where the blanking starts V CENTER I2 C 1 Call the V CENT mode BUS CONTROL 2 Increase or decrease V CENT by Volume key till the picture is centered V AMP I2 C 1 Call the V AMP mode BUS CONTROL 2 Increase or decrease V AMP by Volume key to set overscan to 10 0 typical A...

Page 12: ...ONTROL 4 Check Beam current should be around 990µA CA 100 5 Set it to service mode and adjust the DRI G MH NOTE Above DATA can be UP DRI B MH data to have a color temperature DOWN by volume key of 15 000o K white 6 Receive WHITE pattern WITH BURST signal LOW HIGH and set BRIGHTNESS Y by generator to 10 cd m2 MINOLTA CA 100 by reducing LUMINATE Y signal 15 000o K 7 Adjust CUT R CUT G to get 15 000o...

Page 13: ...13 6 5 4 3 2 1 A B C D E F G H 14V L70M MODEL 14V L70M CHASSIS LAYOUT ...

Page 14: ...14 6 5 4 3 2 1 A B C D E F G H 14V L70M BLOCK DIAGRAM ...

Page 15: ...16 14V L70M 15 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H MODEL 14V L70M BLOCK DIAGRAM ...

Page 16: ...hs taken on a standard gated color bar signal the tint setting adjusted for proper color The wave shapes atthe 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 AND SHADED COMPONENTS SAFETY RELA TED PARTS MARK X RA Y RELA TED PARTS This circuitd...

Page 17: ...18 6 5 4 3 2 1 A B C D E F G H 14V L70M SCHEMATIC DIAGRAM CRT Unit ...

Page 18: ......

Page 19: ...501 R512 R615 T602 H P602 R608 R605 R604 D601 R603 R614 Q501 D603 R610 TP651 3 P603 1 3 B E R609 D606 R630 D506 D507 307 D602 R633 D607 R623 C510 R607 D605 4 C620 R631 C602 C603 2 R502 IC501 7 1 6 C505 348 347 C515 119 D504 C503 R632 230 R506 233 706 C513 R514 C502 D505 D505 C610 709 C511 HM472 C514 HM726 F R620 R753 710 C608 R619 105 R640 712 C501 R521 C640 206 216 104 HM752 B E Q601 R622 D331 C7...

Page 20: ...J78 Q801 R8013 R304 RJ55 R530 C529 Q804 R1041 R1035 R1037 R1051 IC1003 C1004 R1040 R1072 R1039 R1036 R1073 R205 R337 RJ32 RJ4 RJ15 RJ49 RJ50 RJ53 R651 C211 R1066 RJ73 RJ2 RJ13 R430 RJ17 RJ10 RJ16 R362 R363 C205 RJ19 R1017 R1015 R365 R230 R464 R202 RJ21 R364 R201 C233 R332 R209 C209 C207 R433 C208 R220 R207 R206 R401 C232 R340 C231 R208 Q304 Q201 RJ14 Q401 C210 R251 R505 C251 C507 R504 R511 C504 R3...

Page 21: ...23 6 5 4 3 2 1 A B C D E F G H 14V L70M PWB B CRT Unit Wiring Side PWB B CRT Unit Chip Parts Side ...

Page 22: ...e D603 RH EX0667GEZZ Zener Diode 27V D606 RH DX0131CEZZ Diode D608 RH DX0468CEZZ Diode D651 RH EX0627GEZZ Zener Diode 8 2V D653 RH DX0048GEZZ Diode D701 RH DX0111PEZZ Diode D703 RH DX0321CEZZ Diode D705 VHD1SS82 1A Diode D706 VHD1SS82 1A Diode D707 VHD1SS82 1A Diode D751 RH DX0229CEZZ Diode D752 RH DX0131CEZZ Diode To have your order filled promptly and correctly please furnish the following infor...

Page 23: ...Mylar L203 VP DF270K0000 Peaking 27 µH C529 VCKYCY1CB823K 0 082 16V Ceramic L204 VP XF1R2K0000 Peaking 1 2 µH C531 VCKYCY1HB102K 1000p 50V Ceramic L253 VP XF120K0000 Peaking 12 µH C532 VCKYCY1HB102K 1000p 50V Ceramic L701 RCILF0096PEZZ Coil C533 VCQYTA1HM104J 0 1 50V Mylar L751 RCILP0225CEZZ Coil C601 VCQYTA1HM563J 0 056 50V Mylar L802 VP DF100K0000 Peaking 10 µH C602 VCEA0A1HW475M 4 7 50V EL L803...

Page 24: ...W M Ox C808 VCEA0A1CW107M 100 16V EL RJ71 VRS CY1JF000J 00 1 16W M Ox C809 VCKYCY1CF474Z 0 47 16V Ceramic RJ72 VRS CY1JF000J 00 1 16W M Ox C810 VCKYCY1CF474Z 0 47 16V Ceramic RJ73 VRS CY1JF000J 00 1 16W M Ox C811 VCEA0A1CW107M 100 16V EL RJ75 VRS CY1JF000J 00 1 16W M Ox C812 VCFYFA1HA224J 0 22 50V Mylar RJ76 VRS CY1JF000J 00 1 16W M Ox C813 VCFYFA1HA224J 0 22 50V Mylar RJ77 VRS CY1JF000J 00 1 16W ...

Page 25: ... R505 VRS CY1JF102J 1 0k 1 16W M Ox R753 VRD RM2HD124J 120k 1 2W Carbon R506 VRS VV3AB331J 330 1W M Ox R754 VRD RM2HD150J 15 1 2W Carbon R507 VRN VV3AB1R0J 1 0 1W M Film R755 VRD RA2BE221J 220 1 8W Carbon R511 VRS CY1JF181J 180 1 16W M Ox R756 VRD RM2HD270J 27 1 2W Carbon R512 VRD RM2HD100J 10 1 2W Carbon R757 VRS CY1JF151J 150 1 16W M Ox R521 VRD RA2BE333J 33k 1 8W Carbon R801 VRS CY1JF221J 220 1...

Page 26: ...3 QPGV 0408PJZZ J Wire Red R1038 VRS CY1JF101J 100 1 16W M Ox J4 QPGV 0402PJZZ J Wire Violet R1039 VRS CY1JF223J 22k 1 16W M Ox J13 QPGV 0405PJZZ J Wire Orange R1040 VRS CY1JF101J 100 1 16W M Ox J17 QPGV 0402PJZZ J Wire Violet R1041 VRS CY1JF101J 100 1 16W M Ox R1042 VRD RA2BE471J 470 1 8W Carbon R1046 VRS CY1JF101J 100 1 16W M Ox R1047 VRS CY1JF332J 3 3k 1 16W M Ox R1050 VRS CY1JF392J 3 9k 1 16W ...

Page 27: ...HB102K 1000p 500V Ceramic R879 VRS CY1JF471J 470 1 16W M Ox R880 VRS CY1JF471J 470 1 16W M Ox R881 VRS CY1JF471J 470 1 16W M Ox R882 VRS VV3DB153J 15k 2W M Ox R883 VRD RM2HD272J 2 7k 1 2W Carbon R884 VRS VV3DB153J 15k 2W M Ox R885 VRD RM2HD272J 2 7k 1 2W Carbon R886 VRS VV3DB153J 15k 2W M Ox R887 VRD RM2HD272J 2 7k 1 2W Carbon R888 VRS CY1JF471J 470 1 16W M Ox R892 VRS CY1JF102J 1 0k 1 16W M Ox R8...

Page 28: ...peration Manual LX TZ3004CEFD Screw for AV TLABM0648PJZZ Model Label MSPRC0148PJFW Spring for Pow But TLABN0106PFZZ Serial No Label XTASD40P16000 Screw for Cabinet TLSTS2000PLZZ Service Center List XTASD40P12000 Screw XTASD50P30000 CRT Screw XWHSD75 15000 CRT Washer QANTD2001PJZZ Dipole Antenna RRMCG1339CESB Remote Control RTRNZ0004PJZZ Matching X former UBATC0001PJZZ AA SHD Battery SPAKA0656PJZZ ...

Page 29: ...FRONT PACKING OF THE SET 14V L70M ANTENNA UNIT UPPER PAD LOWER PAD CARTON BOX REMOTE CONTROL 31 ...

Page 30: ... Chief Engineer Product Engineering Section FELICISIMO R BIDONG JR Circuit Design Engineer ANGUSTIA C DELA CRUZ Circuit Design Engineer DENNIS P ESTUDILLO Circuit Design Engineer MICHAEL M MABINIS Product Engineer MARCEL F MOSO Cadet Engineer DESIGN GROUP LEA M ARANAS Chief Designer JONATHAN C MAGTIRA Product Designer VENI F TESTA Product Designer SHARON I ARANAS Graphics Designer ...

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