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Sharp XG-3850E Service Manual
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Sharp XG-3850E Service Manual

Sharp XG-3850E Service Manual

Secam/pal/ntsc system
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CONTENTS
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SHARP CORPORATION

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XG-3850E

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Summary of Contents for Sharp XG-3850E

  • Page 1: Sharp Corporation

    XG-3850E CONTENTS SHARP CORPORATION...

  • Page 2: Specifications

    X G - 3 8 5 0 E / SPECIFICATIONS Specifications are subject to change without notice.

  • Page 3: Lamp Replacement

    XG-3850E The light source, metal halide lamp, in the LCD projector emits small amounts of UV-Radiation. EXPOSURE. To ensure safety please adhere to the following: Figure 1. n Lamp Replacement Note: UV-Radiation a n d M e d i u m...
  • Page 4 About the Temperature Monitor Function:...
  • Page 5 Using the Focus, Zoom and Lens Shift Inserting the Batteries manual. (Four AA batteries.) NOTES ON BATTERIES Incorrect use ot batteries may cause them to leak or burst. Remote Control Operation Using the remote Turn ON the LAMP control In a dark room POWER button...
  • Page 6 Projector Distance and Picture Size Relationship ped with an image invert/reverse function. The projected image can be inveried or reversed by using the INVERT/ llf! VERSE button on the projector. Picture size: 254 cm (100 inches) INVERT/REVERSE button Diagram shows the Lens Shift position set at Picture size: 254cm (100 inches) to set up the projector and screen Caution: When you set up the proJector...
  • Page 7 Using the Level and Height Adjusters Example of a High mount setup When adjustments lor the projector position cannot be made usrng rhe Lens Shin alone, or when the projecfor stand is on an angle. use the adiuslors on the bottom 01 Ihe oroiector to adrust its venical ansle. made.
  • Page 8 To watch playback with the projector connected to a video source equipped with a 15.75 ktiz or Before connecting, be sure to lurn both the projector and the equipment off. Connect the R, G, B, and Cs cables to the correct input terminals on the projector and the video source.
  • Page 9 the rojeclor lo a personal Before connectin f, be sure 10 lurn both the projector and the corn Input Signal (Recommended Signal) computer with a rgltal display output port. set the ANALOG/DIGIT L selection switch lo the B After making all connections. lirst turn the projector on. The computer should always be turned on lasl. 1.
  • Page 10 3. Connecting to an IBM-PC CGFUEGA Series Computer When connecting lo a computer types 01 video signals are shown below lot with digital signal oulpul. be sure lo Note: Do nol set the switch lo Analog set the switch lo Digilal belore when the projector is connected connecting the signal cable.
  • Page 11 MODE green. <PHASE> The indicator Indicator off: Main Power switch is se1 to ofi RESET RESET <CLOCK> odor...
  • Page 12 How to Select the Masking Mode...
  • Page 13 Confirming the Selected Input Terminal How to Adjust Masking Selecting the Status Memory To return to the factory preset settings...
  • Page 14 Adjusting the Picture Checking Picture Adjustments To return to the facto preset settings...
  • Page 15 . The Background Level adjustment can be used lo ad’ ust the picture while balance for the selected Video Input Source. selected source. computer images may STATUS CHECK button be distorted or vertically misaligned. Should this occur, the picture can ba VIDEO ADJUSTMENT SELECT button adjusted to compensate, and the changes saved lo memory.
  • Page 16 select an input terminal which is not connected to anything, or which is connected to a video dusty or smoky location. Have your nearest Authorized SharpVision Service Center or Dealer replace the litter (PFILD0027CEZZ) when it IS no component that is turned off. longer possible to clean il.

  • Page 18: Removing The Lamp Unit

    1. Removing the Lamp Unit l - l 2. Removing the Top and Rear Bodies and Fan Cover...
  • Page 19 X G - 3 8 5 0 E 3. Removing the Main PWB and Sub PWB 4. Removing Other PWBs 5. Replacing the LCD Panel...
  • Page 20 X G - 3 8 5 0 E 1 6. Removing the Optical Unit 7. Removal of Lamp Non-conductive...
  • Page 21 X G - 3 8 5 0 E Connecting the Extension Servicing Cables QCNW-3939CEZZ...
  • Page 22 XG-3850E Before starting adjustments, be sure to hold down the “2” key on the remote controller for longer than 1 second. Now the adjustment data are all initialized, Set these switches to the standard position. <Shift lens position data >...
  • Page 23 XG-3850E 5. 4fsc clock signal: C4027 6. Video signal level: R4026 (Y/C Separator PWB) 7. PAL chroma trap: T401 8. SECAM chroma trap: T402...
  • Page 24 XG-3850E 9. PAL chroma: T803 (1 H phase), R812 (1 H delay amplifier) To be atthe same level y...
  • Page 25 12. SECAM R-Y: T805 T804 13. SECAM . . .
  • Page 26 XG-3850E 15. Y level: R870, R462 (Main PWB) 16. AGC: R870 (Main PWB) 17. PAL-Y level: R4162 18. Tint: DAC on remote controller (Main PWB)
  • Page 27 XG-3850E 19. Colour density: DAC on remote controller (Main PWB) 20. Horizontal center: R4709 21. PAL horizontal position: R613 22. Sub-brightness: RI450 (G), RI454 (R), RI467 (B) (Main PWB)
  • Page 28 X G - 3 8 5 0 E j 23. Video level: RI443 (Main PWB) 24. Sub-contrast: R1457, RI471 (Main PWB) 25. Gamma: RI 123, RI 132 (Control PWB) 26. Bias: RI 182 (Control PWB)
  • Page 29 27. Sub-bias: 185, 188 (Control PWB) 28. Counter-bias: R1885 (R), RI889 (G), RI893 (B) (Control PWB) Make this adjustment after the sub-bias adjustment 29. White balance: (Control PWB)
  • Page 30 XG-3850E 30. Saw-tooth waveform correction (amplitude): RI 156 (Control PWB) 32. Sign position: T1201 (Main PWB) 33. Aging switch 34. Cumulative time counter reset...
  • Page 31 35. R/G/B bias: R4743 (R), R4744 (G), R4745 (B) 36. R/G/B gain: RI 682 (R), RI 678 (G), RI 673 (B) 37. R/G/B gamma: RI 573...
  • Page 32 X G - 3 8 5 0 E 1 38. R/G/B offset (inversion, non-inversion, and center bias): 51603, R5707 39. Horizontal phase: DAC on remote controller (VGA AMP PWB) 40. White balance: R4744, R4745 (VGA AMP PWB)
  • Page 33 XG-3850E FACTORY ADJUSTMENT (Checking) FACTORY SETTINGS OF THE SWITCHES AND CONTROLS...

  • Page 34: Lcd Projector

    n Analog/digital section adjustment n Adjustment system layout 0 0 0 PC-IF PWB projector n Layout of adjustment controls - - - 1. VCO coil adjustment...
  • Page 35 2. Level gain adjustment (with computer) Adiustina Procedures Brightness adjustment To be equally ..spaced ..I...
  • Page 36 X G - 3 8 5 0 E 1 >) until the image becomes sharpest. P H A S E...
  • Page 37 XG-3850E IBM-PC...
  • Page 38 X G - 3 8 5 0 E j Basic optical adjustment 1. Optical axis alignment 2. LCD alignment...
  • Page 39 Cleaning the lenses and reflectors 2. Reflector cleaning 3. Precaution Adjustment after LCD panel replacement...
  • Page 40 X G - 3 8 5 0 E / Tools required 2. Adjustment references 3. Adjustment procedure...
  • Page 42 X G - 3 8 5 0 E ( See TROUBLESHOOTING FOR BALLAST MODULE. Check power unit. Video input switching~circuit on terminal unit PWB or Y/C Check 1C1401,1C1403 Y/C unit peripheral circuits. Picture quality correction circuit on main PWB faulty. Check IC402, IC403 and their peripheral circuits.
  • Page 43 XG-3850E SHOOTING TROUBLE TABLE (Continued) No Color or No Specific Coiour (NTSC) Select color density/tint mode with video select key. Use UP/DOWN key to see the color. Color density: About +0.5 V (DC) at pins (45) and (43), respe mL.

  • Page 44: Trouble Shooting Table

    X G - 3 8 5 0 E TROUBLE SHOOTING TABLE (Continued) No Specific Colour (PAL) Colour system control: PAL mode. No colour. Is colour abnormal? Normal voltage: See system control table. Check X802, SW-2 SW-3 FORCED MODE Pin (31) Fin (38) Pin (15) R829, T803 and SECAM H: Over 3V...
  • Page 45 TROUBLE SHOOTING TABLE (Continued) No Colour or Pale Colour (SECAM) 2. Set Contrast control to maximum. Pale colour. a lead between Check T801, DL801, Check 5V line of Readjust and and emitter of C829, C828, R823, check 1802. R832, R836, T804 and No Specific Colour (SECAM) Colour system control: SECAM mode.
  • Page 46 X G - 3 8 5 0 E TROUBLE SHOOTING TABLE (Continued) Check video input unit (IC1404, Check It801 and its peripheral Check IC1610, IC1614and their --. Check LCD panels and cables for poor connection and damage. Reconnect or replace as required.
  • Page 47 SHOOTING TROUBLE FOR AMP, LED PWB Sound Check power unit circuit applied at commector Check IC3301 and its peripheral applied at pin (I) Check lC3302 and its peripheral connector SP?
  • Page 48 TROUBLE SHOOTING FOR BALLAST MODULE between (2)-(5),(5-g), ChecklC1701.
  • Page 49 TROUBLE SHOOTING FOR PC-IF PWB (RGB2) Pictur Check personal computer power Check power unit circuit Check PC-IF PWB. Check PC-IF PWB. Check IC1601, I0602 and their peripheral circuits on VGA amplifier unit. connectors R, G Check pins (20), (21). (15) and (16) of connector MB as well as peripheral circuits on control PWB.
  • Page 50 X G - 3 8 5 0 E ) TROUBLE SHOOTING FOR PC-IF (Continued) Check control PWB (IC1803) and its peripheral circuits. panels and replace as required.
  • Page 51 TROUBLE SHOOTING FOR PC-IF PWB (Continued) Power Switch ON Digital input selected. Check digital input circuit. Hook up personal computerand input test pattern signal. Press mode switch. Does LED light up? Check syncsignal input circuit.
  • Page 52 XG-3850E TROUBLE SHOOTING FOR PC-IF PWB (Continued) Check analog circuit and its peripherals. Check contrast circuit and its Does image appear? Check red circuit and its Check blue circuit and its Check PLL circuit and its peripherals. page, 59.
  • Page 53 TROUBLE SHOOTING FOR PC-IF (Continued) Digital/analog switching circuit or its peripherals faulty. at TP8002? Turn R8035 clockwise. Check field memory, red circuit To page, 56.
  • Page 54 X G - 3 8 5 0 E TROUBLE SHOOTING FOR PC-IF PWB (Continued) Checking the Green Circuit and its Peripherals Digital/analog switching circuit at pin (6) of X8031? or its peripherals faulty. at DO thru D7 of Check field memory, green circuit and their peripherals.
  • Page 55 TROUBLE SHOOTING FOR PC-IF PWB (Continued) Checking the Blue Circuit and its Peripherals Digital/analog switching circuit or its peripherals faulty. Turn R8033 clockwise. Is there output at DO thru D7 of To page, 58.

  • Page 56: Trouble Shooting

    TROUBLE SHOOTING PC-IF PWB (Continued) eripheral circuits faulty. faulty. signal.
  • Page 57 XG-3850E TROUBLE SHOOTING FOR PC-IF PWB (Continued) Checking the Field Memory (Green) Circuit and its Peripherals Damping resistor faulty. signal. from I(380147...
  • Page 58 XG-3850E TROUBLE SHOOTING FOR PC-IF PWB (Continued) Checking the Field Memory (Blue) Circuit and its Peripherals faulty. peripheral circuits faulty. thru BM7 of IC8019 outputted to BOO thru B07 of IC8019 Damping resistor faulty.,...
  • Page 59 XG-3850E TROUBLE SHOOTING FOR PC-IF PWB (Continued) Readjust analog circuit. Check CPU circuit and its peripherals. Checking the PLL Circuit and its Peripherals applied at pins (6) and (7)
  • Page 60 TROUBLE SHOOTING FOR PC-IF PWB (Continued) Checking the Clock Circuit and its Peripherals X8001 faulty. output at LCD CLOCK...
  • Page 61 X G - 3 8 5 0 E TROUBLE SHOOTING FOR PC-IF PWB (Continued) Checking the Digital Input Circuit Hook up personal computer and input test pattern signal. Check sync slgnal Input clrcult. Digital/analog selector switch or Check field memory (red) circuit page, 56.
  • Page 62 X G - 3 8 5 0 E TROUBLE SHOOTING FOR PC-IF PWB (Continued) Checking the Sync Signal Input Circuit Check connector and its peripheral circuits.
  • Page 63 S H A R P...
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  • Page 65 X G - 3 8 5 0 E 1 2 6...
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  • Page 67 X G - 3 8 5 0 E 1 2 8...
  • Page 68 VOLTAGE MEASUREMENT CONDITION: WAVEFORM MEASUREMENT CONDI- TION: KONDENSATORS: ~-...
  • Page 69 XG-3850E...
  • Page 70 X G - 3 8 5 0 E 1 3 2...
  • Page 71 1 3 3...
  • Page 72 8 5 0 E...
  • Page 73 X C - 3 8 5 0 E 1 3 5...
  • Page 74 XG-3850E (R - Y) R Signal 1 3 6...
  • Page 75 X G - 3 8 5 0 E 1 3 7...
  • Page 76 X G - 3 8 5 0 E 1 3 8...
  • Page 77 X G - 3 8 5 0 E XG-3 1 3 9...
  • Page 78 X G - 3 8 5 0 E 1 4 0...
  • Page 80 X C - 3 8 5 0 E...
  • Page 81 X G - 3 8 5 0 E X G - 3 1 4 3...
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  • Page 85 X G - 3 8 5 0 E 1 4 7...
  • Page 86 X G - 3 8 5 0 E 1 4 8...
  • Page 87 XC-3850E 1 4 9...
  • Page 88 X G - 3 8 5 0 E 1 5 0...
  • Page 89 X G - 3...
  • Page 90 X G - 3 8 5 0 E 1 5 2...
  • Page 91 . . I A R E A H O T 1 5 3...
  • Page 92 850E X G - 3 8 5 0 E A R E A IS cow SID#~ T H I S...
  • Page 93 X G - 3 8 5 0 E X G - 3 1 5 5...
  • Page 94 XG-3850E I I I 1 5 6...
  • Page 95 1 5 7...
  • Page 96 X G - 3 8 5 0 E 1 5 8...
  • Page 98 X G - 3 8 5 0 E 1 6 0...
  • Page 99 input Unit (Component Side)/ Eingangs-Einheit (Bestiickungsseite) Amp., LED Unit (Component Side)/...
  • Page 100 input Unit (Wiring Side)/ Eingangs-Einheit (Leiterbahnseite) Amp., LED Unit (Wiring Side)/ 1 6 2...
  • Page 101 X G - 3 8 5 0 E XG-3 Main Unit (Conmponbt Side)/ Haupt-Einheit (BestOckungsseitel 1 6 3...
  • Page 102 X G - 3 8 5 0 E onent Side)/ Coil Unit (Component Side)/ Spuleneinheit (Bestiickungsseite) 1 6 4...
  • Page 103 Main Unit (Wiring Sic Haupt-Einheit (Leiterbah Coil Unit (Wiring Side)/ Spuleneinheit (Leiterbahnseite) 1 6 5...
  • Page 104 8 5 0 E X G - 3 8 5 0 E...
  • Page 105 X G - 3 8 5 0 E X G - 3 Control U 1 6 7...
  • Page 106 X G - 3 8 5 0 E Scan Converter Unit (Component Side)/ Control Unit (Component Side)/ Steuetwerk-Einheit (Bestiickungsseite) Y/C Separator Unit (Component Side)) YC-Einheit (Bestiickungsseite) 1 6 8...
  • Page 107 Scan Converter Unit (Wiring Side)/ Abtast-Konverter-Einheit (Leiterbahnseite) Control Unit (Wiring Side)/ Y/C Separator Unit (Wiring Side)/ YC-Einheit (Le>rbahnseite) 1 6 9...
  • Page 108 3 8 5 0 E X G - 3 8 5 0 E ring Side)/...
  • Page 109 VGA Amp Unit (Component Side)/ Power Unit (Component Side)/ 1 7 1...
  • Page 110 X G - 3 8 5 0 E VGA Amp Unit (Wiring Side)/ Power Unit (Wiring Side)/ 1 7 2...
  • Page 111 Ballast Unit-l (Component Side)/ Ballast Unit-2 (Component Side)/ Vorschalt-Einheit-2 (Bestiickungsseite) 1 7 3...
  • Page 112 X G - 3 8 5 0 E Ballast Unit-l (Wiring Side)/ Ballast Unit-2 (Wiring Side)/ Vorschalt-Einheit-2 (Leiterbahnseite) 1 7 4...
  • Page 113 X G - 3 8 5 0 E PC I/F Unit (Component Side)/ PC-IF-Einheit (Bestiickungsseite) 1 7 5...
  • Page 114 XG-3850E 1 7 6...
  • Page 115 PC I/F Unit (Wiring Side9 PC-IF-Einheit (Leiterbahnsc...
  • Page 116 X G - 3 8 5 0 E it (Wiring Side)/ 1 7 8...