Zenith D52WLCD Series Service Manual
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Zenith D52WLCD Series Service Manual

Rear projection lcd
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SERVICE MANUAL
Product Type:
Chassis:
Manual Series:
Manual Part #:
Model Line:
Product Year:
Product Specifications ..................................................5
Description of Circuits.................................................15
Diagrams ...................................................................25
Adjustment Instructions ...............................................29
Parts List ...................................................................41
Schematics ....................................................................
Printed in Korea
Rear Projection LCD
NB-02QB
2002
CONTENTS
Published June 2002
by Technical Publications
Zenith Electronics Corporation
201 James Record Road
Huntsville, Alabama 35824-1513
Copyright © 2002 by Zenith Electronics Corporation
Model Series:
D52WLCD

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Summary of Contents for Zenith D52WLCD Series

  • Page 1 Product Specifications ..........5 Description of Circuits..........15 Diagrams ..............25 Adjustment Instructions ..........29 Parts List ..............41 Schematics ..............Published June 2002 by Technical Publications Zenith Electronics Corporation 201 James Record Road Huntsville, Alabama 35824-1513 Copyright © 2002 by Zenith Electronics Corporation Printed in Korea...

  • Page 2: Important Safety Notice

    When servicing this product, under no circumstances should the orig- 2. Verify that all protective devices such as insulators, barriers, cov- inal design be modified or altered without permission from Zenith ers, shields, strain reliefs, power supply cords, and other hardware Electronics Corporation.
  • Page 3 The responsible party for this device’s compliance is: devices. 4. Use only an anti-static solder removal device. Some solder Zenith Electronics Corporation removal devices not classified as “anti-static” can generate 201 James Record Road electrical charges sufficient to damage ES devices.

  • Page 4: Table Of Contents

    TABLE OF CONTENTS PRODUCT SPECIFICATIONS ....5 DESCRIPTION OF CONTROLS ....6 PROGRAMMING CODES .

  • Page 5: Product Specifications

    PRODUCT SPECIFICATIONS Power requirements 120V, 60 Hz Number of inputs/outputs Video (In) 1 Vp-p, 75 ohms unbalanced, sync negative Video (Out) S Video (In) Y: 1 Vp-p, 75 ohms unbalanced, sync negative C: 0.280 Vp-p (burst signal), 75 ohms Audio (In) 500 mVrms (100% modulation), Impedance: 47 kilohms Center Mode (In) Audio out...

  • Page 6: Description Of Controls

    DESCRIPTION OF CONTROLS Function Status Indicators Lamp indicator, operation indicator, and temperature indicator located below the front panel controls, reveal the operating status of the LCD projection TV. Operation Indicator Temperature Indicator Lamp Indicator Power cord is not connected. Power Cord is connected, TV is in standby mode. Operation Indicator Green Orange (flashing)
  • Page 7 DESCRIPTION OF CONTROLS On-Screen Displays This page describes your on-screen display and information banner options. Channel Label If a channel label has been Main Channel Display set, then it will appear here. Displays current channel number. Ch. 13 PIP Display MONO This display appears when...
  • Page 8 DESCRIPTION OF CONTROLS Front Panel Controls Power On / Off Menu Enter (Same as ENTER button on your remote control) VOLUME UP / DOWN CHANNEL UP / DOWN Operation indicator. Lamp indicator. Temperature indicator. power menu enter - 8 -...
  • Page 9 DESCRIPTION OF CONTROLS Remote Control Functions in TV Mode MODE Selects the remote operating INDICATOR LIGHTS mode: TV, VCR, Cable, DVD Show active remote mode and Satellite. Select other oper- every time any button is ating modes, for the remote to vcr cable dvd sat pressed.
  • Page 10 DESCRIPTION OF CONTROLS Remote Control Functions in TV Mode POWER vcr cable dvd sat Turns your TV or any other programmed equipment on or off, depending on mode. mode light power source video front antenna COMPONENT 1, 2 Selects PC or RGB input comp1 comp2 sources.

  • Page 11: Programming Codes

    FUTURETECH 028 040 042 SCOTT 004 028 043 YUPITERU 004 006 008 109 116 124 048 116 143 ZENITH 001 072 073 009 034 056 SEARS 004 007 015 095 103 157 073 074 091 004 006 062 028 030 057...
  • Page 12 041 067 068 SAMSUNG 032 040 102 DAEWOO 005 007 010 MARANTZ 012 031 033 104 105 107 ZENITH 001 034 048 064 065 108 067 069 109 112 113 056 058 072 110 111 112 MARTA 115 120 122...
  • Page 13 VIEWSTAR AMPLICA GENERAL INSTRUMENT 003 004 016 PHILIPS WINEGARD 128 146 BIRDVIEW 051 126 129 029 031 059 PICO ZENITH 001 081 082 PRESIDENT 019 102 083 084 091 CAPETRONICS HITACHI 139 140 PRIMESTAR 030 110 111 CHANNEL MASTER 013 014 015...
  • Page 14 012 015 018 REMBRANT 086 087 088 ANTRONIK M-NET ARCHER 005 007 014 MACOM SAMSUNG 030 068 ZENITH 001 060 093 MAGNAVOX 010 012 064 SCIENTIFIC ATLANTA 003 011 041 CABLE STAR 042 043 045 CENTURION MEMOREX CENTURY MOVIE TIME...

  • Page 15: Description Of Circuits

    DESCRIPTION OF CIRCUITS 1. Main Part 1.1 CXA2069Q : Audio/Video Switch (1) Description The CXA2069Q is a 7-input, 3-output audio/video switch fea- turing I 2 C bus compatibility for TVs. This IC has input pins that are compatible with S2 protocol. (2) Features •...
  • Page 16 DESCRIPTION OF CIRCUITS (4) Block Diagram - 16 -...
  • Page 17 DESCRIPTION OF CIRCUITS In addition, the IN1 and IN2 systems support D3 input pins. 1.2 CXA2151Q : Video/Sync Selector This is selected by SELSTB_1 and SELSTB_2 (I C bus). The control line input voltage of each L1, L2, L3 and SW pin (1) Description is returned to the status register by a ternary or binary value.
  • Page 18 DESCRIPTION OF CIRCUITS The SYNC counter block counts the H sync signal input dur- Note that a 4MHz external clock can be input to ing a certain period (.5ms) based on the clock obtained by EXTCLK/XTAL (Pin 20) via a capacitor by setting CLK_SEL the internal VCO from the 4MHz crystal oscillator or ceramic C bus).
  • Page 19 DESCRIPTION OF CIRCUITS (4) Block Diagram - 19 -...
  • Page 20 DESCRIPTION OF CIRCUITS 1.3 MSP3440G : Very high deviation FM-Mono: Detection and robust demodu- Sound Processor lation of one FM carrier with a maximum devi-ation of 540 kHz. (1) Introduction BTSC-Stereo: Detection and FM demodulation of the aural car- The MSP 3440G family of single-chip Multistandard Sound rier resulting in the MTS/MPX signal.
  • Page 21 DESCRIPTION OF CIRCUITS (3) Block Diagram Fig Signal flow block diagram of the MSP 3440G(input and output names correspond to pin names) - 21 -...
  • Page 22 DESCRIPTION OF CIRCUITS 2. Digital Part 2.1 DTV Ready Video Chip (1) Features • Integrate format converter and display controller into a single chip • Input video (2 channels) - NTSC/PAL - PC output : VGA/SVGA/XGA - STB output : 1080I, 720P, 480P, 480I - Display : any combination of NTSC/PC/STB including 2xNTSC, 2xSTB •...
  • Page 23 DESCRIPTION OF CIRCUITS (3) Block Diagram SDRAM Display PLL 8(4) Mbytes RGB or YIQ or YUV or Composite 1 YCbCr NTSC (24) decoder S- Video 1 DTV ready video chip NTSC/PC/STB (RGB) PIP/POP/split - screen/zoom 60/50Hz display 1080 I/ ( YPbPr) YIQ or 2- D graphic with OSD 768(720)P/...
  • Page 24 DESCRIPTION OF CIRCUITS (5) External Interface • Frame size detection - NTSC/PAL - PC output : VGA/SVGA/XGA - STB output : 1080I, 720P, 480P, 480I • Field detection • Frame rate detection - Clock selection : 59.94/60Hz detection - VGA frame rate detection : 60/70/75 Hz etc. •...

  • Page 25: Diagrams

    BLOCK DIAGRAM - 25 -...
  • Page 26 BLOCK DIAGRAM - 26 -...
  • Page 27 BLOCK DIAGRAM - 27 -...
  • Page 28 BLOCK DIAGRAM - 28 -...

  • Page 29: Adjustment Instructions

    ADJUSTMENT INSTRUCTIONS 2) Step123 : Step selection when changing data. 1. Application Object ex) Step123:1 --> Change one by one when changing This instruction is for the application to the LCD projection TV. data with Volume key Step123:10 --> Change ten by ten when changing data with Volume key 2.

  • Page 30: Screen Position Adjustment

    ADJUSTMENT INSTRUCTIONS 4-2. VCOM Adjustment 5. Assembling Adjustment (1) Required Test Equipments 5-1. Screen Tilt & Keystone Adjustment 1) PC PATTERN GENERATOR : Pattern Generator which can generate each R,G,B signal and can observe the (1) Required Test Equipments FLICKER best(ex: me Character Pattern). 1) Six angles wrench and spanner for knob adjustment or fix- 2) (Fig.
  • Page 31 ADJUSTMENT INSTRUCTIONS (3) Horizontal Position Adjustment (4) Component & RGB Mode White Balance Adjustment 1) Press In-START key on the SVC remote control to enter Do this adjustment when it is needed.(When there is severe the adjustment mode. white balance gap in low level of AV input contrast. 2) Select 1.
  • Page 32 ADJUSTMENT INSTRUCTIONS (4) Adjustment Sequence 6) Output the 64 Gray Pattern in PC Pattern Generator. Check it with the naked eye whether Screen Gamma and * 1st Column : 16 Step Level W/B is right about each Gray or whether there is Gamma Gamma Adjust Mode noise.
  • Page 33 ADJUSTMENT INSTRUCTIONS - calcuate L2, L3 same with L1 H coefficient = 1/(number of pixel intervals between setting in the horizontal direction) L2 coefficient = 1 / (brightness level(MID1) - brightness level(MID2) Hcoeff = 1/((1280/16)-1) = 0.012658227 L3 coefficient = 1 / (brightness level(MAX) - brightness level(MID1) : case of 4 Brightness Level hex(0.012658227 x 2 ) = 0 x 033D, Hcoeff(hex) = 0 x 033D + 1 = 0 X 33E...
  • Page 34 ADJUSTMENT INSTRUCTIONS 36. GLMAX : Setting up the MAX Level of G 5-6. Brightness Adjusment of Main/Sub screen 37. BLMIN : Setting up the MINIUM Level of B --- Set under Operate this adjustment when the brightness of Main/Sub screen is different. 38.

  • Page 35: Correction Of Screen Tilt & Keystone

    CORRECTION OF SCREEN TILT & KEYSTONE 1. Screen Tilt and Keystone cause of occurrence When the whole engine is leaned, Tilt occur and Keystone occur because of changing TCL when projection angle of engine is different or Mirror angle is different. TILT KEYSTONE Comm...
  • Page 36 CORRECTION OF SCREEN TILT & KEYSTONE 2. New Mechanism for Adjustment The axis of rotation of engine sets back and the whole engine enable left and right rotation, up and down, left and right angle movement. When turning adjustment Knob of left/right in front, engine will move. When moving the engine base with left and right direction in front, engine will rotate.
  • Page 37 CORRECTION OF SCREEN TILT & KEYSTONE 3. Working Method and Improvement for Correction Mechanism of Tilt and Keystone 3.1 Working Method (1) Put the 3t spacer on back of bottom parts of Mirror to correcting the Mirror angle of bottom parts - To correct difference between Mirror angle of C/A and JIG angle of lighting parts.

  • Page 38: Replacing The Lamp

    REPLACING THE LAMP * Contact your dealer or LG service center replacement of new lamp. You must replace the lamp when: The projector image gets darker starts to deteriorate. ¯ The lamp indicator is red(red, flashing alternately). ¯ The message “LAMP REPLACE“ appears on the screen when turning the projec- ¯...
  • Page 39 NOTES - 39 -...

  • Page 40: Exploded View

    EXPLODED VIEW - 40 -...

  • Page 41: Exploded View Parts List

    CASE,SPEAKER BOX LEFT 3550V00159A COVER,SPEAKER BOX LEFT 3110V00124A CASE,SPEAKER BOX RIGHT 3550V00160A COVER,SPEAKER BOX RIGHT 3091V00A81B CABINET ASSEMBLY,RU-52SZ10 MONO NB02QB ZENITH 3350V00019A SCREEN,52W LCD PJTV 3790V00316C WINDOW,FILTER 52W LCD PJTV ACRYL DIABELL 3211V00080A FRAME ASSEMBLY,RN-52SZ10H 3210V00104 XCANVAS BASE UPPER 3211V00081B...

  • Page 42: Replacement Parts List

    REPLACEMENT PARTS LIST For Capacitor & Resistors, the CC, CX, CK, CN : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit CQ : Polyestor RS : Metal Oxide Film RUN DATE : 2002.10.9 in the P/No. means as follows; CE : Electrolytic RN : Metal Film RF : Fusible...
  • Page 43 REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION 0TR387500AA CHIP 2SC3875S(ALY) KEC Q1210 0TR102009AG CHIP KRC102S KEC TP SOT23 NA NA Q1001 0TR387500AA CHIP 2SC3875S(ALY) KEC Q1213 0TR387500AA CHIP 2SC3875S(ALY) KEC CHIP 2SC3875S(ALY) KEC CHIP 2SC3875S(ALY) KEC Q1002 0TR387500AA Q1214...
  • Page 44 REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION D404 0DR050008AA SD05.TC R/TP SEMTECH SOD323 5V 5A 15A ZD601 0DZ560009CF ZENERS,MTZJ5.6B D404 0DD184009AA KDS184S CHIP 85V 300MA KEC TP ZD602 0DZ560009CF ZENERS,MTZJ5.6B D405 0DR050008AA SD05.TC R/TP SEMTECH SOD323 5V 5A 15A ZD841 0DZ620009BB ZENERS,MTZJ6.2B...
  • Page 45 REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION C1044 0CK104DK56A 0.1UF 2012 50V 10% R/TP X7R C1210 0CE106VF6DC 10UF MV 16V 20% R/TP(SMD) SMD C1045 0CK104DK56A 0.1UF 2012 50V 10% R/TP X7R C1216 0CE106VF6DC 10UF MV 16V 20% R/TP(SMD) SMD 0.1UF 2012 50V 10% R/TP X7R 10UF MV 16V 20% R/TP(SMD) SMD C1047...
  • Page 46 REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION C1436 0CE476VH6DC 47UF MV 25V 20% R/TP(SMD) SMD C190 0CE106SF6DC 10UF MVG 16V 20% R/TP(SMD) SMD C1441 0CE476VH6DC 47UF MV 25V 20% R/TP(SMD) SMD C191 0CE106SF6DC 10UF MVG 16V 20% R/TP(SMD) SMD 22UF MVG 16V M SMD R/TP 10UF MVG 16V 20% R/TP(SMD) SMD C147...
  • Page 47 REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION C312 0CE226SF6DC 22UF MVG 16V M SMD R/TP C611 0CE106VF6DC 10UF MV 16V 20% R/TP(SMD) SMD C314 0CE226SF6DC 22UF MVG 16V M SMD R/TP C612 0CE476VF6DC 47UF MV 16V 20% R/TP(SMD) SMD 10UF MVG 16V 20% R/TP(SMD) SMD C359 0CE106SF6DC...
  • Page 48 REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION C873 0CE228BK650 2200UF KME TYPE 50V 20% FM7.5 BULK L881 150-C02F COIL,CHOKE 82UH T801 6170VMCA03D TRANSFORMER,SMPS[COIL] EER4942 1200UH STRF6669 C876 0CE337DK618 330UF STD 50V M FL TP5 T810 6170VMCA37B TRANSFORMER,SMPS[COIL] PQ3535 310UH MC33262...
  • Page 49 REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION R1615 0RS2201K607 2.2K OHM 2 W 5.00% R844 0RD3601F609 3.6K OHM 1/6 W 5.00% R1616 0RS2201K607 2.2K OHM 2 W 5.00% R845 0RD4701F609 4.7K OHM 1/6 W 5% 470K OHM 1/6 W 5.00% 2.4K OHM 1/6 W 5.00% 0RD4703F609...
  • Page 50 ACCESSORIES FILTER ,EMC EMI BMS400 25V 200MA T416 6200QJ3001A T418 6200QJ3001A FILTER ,EMC EMI BMS400 25V 200MA 3828VA0220L MANUAL,OWNERS ZENITH EN T421 6200QJ3001A FILTER ,EMC EMI BMS400 25V 200MA 6710V00052H REMOTE CONTROLLER *ZENITH T422 6200QJ3001A FILTER ,EMC EMI BMS400 25V 200MA...
  • Page 56 PRINTED CIRCUIT BOARD TUNER(TOP) DIGITAL(TOP) MAIN(TOP) MAIN(BOTTOM) DIGITAL(BOTTOM) TUNER(BOTTOM) TUNER(BOTTOM) DRIVER(TOP) DRIVER(BOTTOM) COMPONENT(TOP) POWER(SMPS) SMPS COMPONENT(BOTTOM) 3D-DCF(TOP) 3D-DCF(BOTTOM) LED(TOP) CONTROL(TOP) INTER(BALLAST) SIDE A/V PRE-AMP INTER(LCD PJTV) CONTROL(BOTTOM) LED(BOTTOM)

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