http//www.zenithservice.com SERVICE MANUAL Product Type: Chassis: Manual Series: Manual Part #: Model Line: Product Year: Model Series: LCD Projection TV MB-042B 2004 CONTENTS Product Specifications ..................................................4 Description of Controls .................................................5 Adjustment Instructions ...............................................12 Diagrams ...................................................................29 Parts List .................
PRODUCT SAFETY IMPORTANT SAFETY NOTICE This manual was prepared for use only by properly trained audiovisual service technicians. When servicing this product, under no circumstances should the original design be modified or altered without permission from Zenith Electronics Corporation. All components should be replaced only with types identical to those in the original circuit and their physical location, wiring, and lead dress must conform to original layout upon completion of repairs.
TABLE OF CONTENTS SPECIFICATIONS.................................................................4 DESCRIPTION OF CONTROLS ...........................................5 ADJUSTMENT INSTRUCTION...........................................12 PRINTED CIRCUIT BOARDS .............................................18 BLOCK DIAGRAM...............................................................29 EXPLODED VIEW..........................................................30,32 EXPLODED VIEW PARTS LIST ........................
SPECIFICATIONS Product Specifications M52W56LCD Horizontal Size (Inches) Height (Inches) Depth (Inches) Weight (lbs.) 47.5 33.8 15.7 66.1 Power Requirement AC 120V, 60Hz Television System American TV Standard, NTSC, ATSC with STB Television Channels VHF: 2 - 13 UHF: 14 - 69 CATV: 1 - 125 Power Consumption (W) 220W Antenna 75 ohm External Terminal for VHF/UHF Audio Output (W) 12W x 2 Supplied Accessories Remote control, 2 size AA batteries, 2 filters.
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 Operation Indicator Lamp Indicator Off Red Green Orange (flashing) Orange Red (flashing) Green (flashing) Orange Temperature Indicator Red Red (flashing) Power cord is not connected. Power Cord is connected, TV is in standby mode.
DESCRIPTION OF CONTROLS Rear Connections Panel Connecting cables and external equipment to your TV. Fan Cover Replace or clean the filter to prevent a dust every 1~3 months. When cleaning or replacing the filter, certainly turn the power off. The dust filter must be washed in tepid water with netural detergent. RF Connector: Antenna Used to connect analog cable or antenna signals to the television, either directly or through your cable box.
DESCRIPTION OF CONTROLS Side Connection Panel There are four jacks on the left side on your projection TV that make connecting Audio/Video devices like video games and camcorders very simple. The jacks are like those found on the back jack connection panel. This means that most equipment that connects to those types of jacks on the rear jackpack, may be connected to the side connection panel. To use the side jacks as the signal source, select them using Main Input menu as described on page 25.
DESCRIPTION OF CONTROLS Remote Control Functions in TV Mode MODE Selects the remote operating mode: TV, VCR, Cable, DVD and Satellite. Select other operating modes, for the remote to control external devices. TV/VIDEO Selects: Analog, Video1, Video2, Side video, Component1-2, RGB, and DVI input sources. SIDE Selects the side video signal if a device, such as a camcorder or game player, is connected to the side video input jack. MUTE Switches the sound on or off SAP Selects: Mono, Stereo, and SAP.
DESCRIPTION OF CONTROLS Remote Control Functions in TV Mode VCR CABLE DVD SAT TV MODE LIGHT POWER TV/VIDEO SIDE DVI COMP1 COMP2 RGB POWER RGB COMPONENT 1, 2 Selects component signal sources, such as DVD or HD receiver. 1 2 3 NUMBER KEYPAD 4 5 6 7 8 9 ENTER 0 FLASHBK For direct channel selection and programming functions. Turns your TV or any other programmed equipment on or off, depending on mode. Selects: RGB-DTV and RGB-PC input sources.
DESCRIPTION OF CONTROLS On-Screen Displays This page describes your on-screen display and information banner options. Main Channel Display Displays current channel number. TV 13 MONO ABC Channel Label If a channel label has been set, then it will appear here. PIP Display This display appears when PIP is active. TV 6 AM 3:00 10 Mute Appears when sound is muted. Volume Volume level is displayed while adjusting the sound. - 10 - Time Appears when pressing the enter button.
DESCRIPTION OF CONTROLS Front Panel Controls POWER MENU 1 ENTER 3 2 VOL CH 4 5 1 2 POWER 3 ENTER (Same as ENTER button on your remote control) 4 5 6 7 VOLUME UP / DOWN 8 Temperature indicator. 6 8 7 MENU CHANNEL UP / DOWN Operation indicator. If TV is moved from cold to normal room temperature, condensation may form inside TV, wait 3 hours the TV to adjust to room temperature before turning it on. Lamp indicator.
ADJUSTMENT INSTRUCTIONS 1. Application Object 4. LCD Adjustment This instruction is for the application to the LCD projection 4-1. NRS Adjustment TV(MB-042B Chassis). [ When the LCD panel load data on regular pixel using high speed charge/discharge with sample & holder, the drain width of TFT gradually decreases and the non-resistance increases, and comes out regular noise on screen(shows vertical line by 12 pixel) 2.
ADJUSTMENT INSTRUCTIONS (2) Equipment Composition Equipment to measure Optics 5-3. Horizontal Position Adjustment (1) Press ADJ key on the Remote Control to enter the adjustment mode. (2) Select 2. Position. (3) Select H_Position with channel key in adjust mode. (4) Adjust data with using the Volume key on the Remote Control in order to get left/right screen symmetry. (Refer to Fig. 3) Adjustment Jig Circuit thing for Adjustment SCREEN PC SET Stand PC Pattern Generator 5-4.
ADJUSTMENT INSTRUCTIONS (6) Output the 240, 240, 240(15th data in max white output signal level) in the VDP Test Pattern, change the 15th RGB Data value to come out white balance x=283, y=297(D9300K) and measured step luminance in 5). (7) Output the 224, 224, 224(14th data in max white output signal level) in the VDP Test Pattern, change the 14th RGB Data value to come out white balance x=283, y=297(D9300K) and measured step luminance in 5).
ADJUSTMENT INSTRUCTIONS (3) After pressing ADJ key on Service Remote Control, select the adjustment mode 5. Uniformity adj. Refer to register value and correct register value if need. 1. 2. 3. 4. 5. 6.
ADJUSTMENT INSTRUCTIONS --- Change according to BMIN and BMID2 value. 25. BL2H : Upper 9bit of MID1 brightness correction coefficient in B MID2. --- Change according to BMID2 and BMID1 value. 26. BL2L : Lower 9bit of MID1 brightness correction coefficient in B MID2. --- Change according to BMID2 and BMID1 value. 27. BL3H : Upper 9bit of MAX brightness correction coefficient in B MID1. --- Change according to BMID1 and BMAX value. (use it while adjusting 4 coefficient) 28.
ADJUSTMENT INSTRUCTIONS 10. EDID Data Input 10-1. Required Test Equipment (1) Jig for adjusting PC, DDC. (PC serial to D-sub. Connection equipment) (2) S/W for writing DDC (EDID data write & read) (3) D-sub terminal 10-2. Setting of Devices LCD PJTV SET (Fig. 5) Deviating Red Pixel, collectively(before adjusting) 10-3. Preparation for Adjustment (1) Set devices as above and turn the PC, jig on. (2) Put the S/W for writing DDC (EDID data write & read) into operation. (Operated in DOS mode.) 10-4.
PRINTED CIRCUIT BOARD MAIN(TOP) - 18 -
PRINTED CIRCUIT BOARD MAIN(BOTTOM) - 19 -
PRINTED CIRCUIT BOARD TUNER(TOP) - 20 -
PRINTED CIRCUIT BOARD TUNER(BOTTOM) - 21 -
PRINTED CIRCUIT BOARD DRIVER(TOP) - 22 -
PRINTED CIRCUIT BOARD DRIVER(BOTTOM) - 23 -
PRINTED CIRCUIT BOARD DIGITAL(TOP) - 24 -
PRINTED CIRCUIT BOARD DIGITAL(BOTTOM) - 25 -
PRINTED CIRCUIT BOARD SMPS AC INPUT - 26 -
PRINTED CIRCUIT BOARD CRM(TOP) CRM(BOTTOM) SIDE A/V - 27 -
PRINTED CIRCUIT BOARD CONTROL(TOP) CONTROL(BOTTOM) INTERFACE CASE DET PRE-AMP - 28 -
BLOCK DIAGRAM - 29 -
310 650 302 300 305 301 120 330 121 - 30 501 520 540 306 580 560 303 603 608 600 582 550 583 572 571 570 584 503 304 602 601 432 641 640 620 502 700 434 431 610 612 720 611 530 721 630 681 433 174 430 400 680 410 670 403 404 402 401 EXPLODED VIEW
EXPLODED VIEW PARTS LIST No. Part No.
310 650 302 300 305 301 120 330 121 - 32 502 520 306 540 303 501 560 571 570 550 503 600 572 304 432 580 581 573 601 174 700 434 431 720 630 530 681 433 640 430 620 400 611 610 612 680 410 670 403 404 402 401 EXPLODED VIEW
EXPLODED VIEW PARTS LIST No. Part No.
REPLACEMENT PARTS LIST For Capacitor & Resistors, the charactors at 2nd and 3rd digit in the P/No. means as follows; LOCA. NO CC, CX, CK, CN : Ceramic CQ : Polyestor CE : Electrolytic PART NO RD : Carbon Film RS : Metal Oxide Film RN : Metal Film RF : Fusible DESCRIPTION IC RUN DATE : 2004.12.13 LOCA. NO PART NO IC307 0IMCRS5003A IC4 DESCRIPTION SIL169CT100 100P 0IFA754207A KA75420ZTA 3P,TO-92 TP 4.
REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION Q1206 0TR387500AA CHIP 2SC3875S(ALY) KEC D102 0DR050008AA SD05.TC SOD323 5V 5A 15A Q1208 0TR150400BA CHIP 2SA1504S(ASY) KEC D103 0DR050008AA SD05.TC SOD323 5V 5A 15A Q1209 0TR387500AA CHIP 2SC3875S(ALY) KEC D104 0DR050008AA SD05.TC SOD323 5V 5A 15A Q1210 0TR150400BA CHIP 2SA1504S(ASY) KEC D105 0DRSE00038A SDC15 TVS SOT23 12.8V Q1211 0TR387500AA CHIP 2SC3875S(ALY) KEC D106 0DR050008AA SD05.
REPLACEMENT PARTS LIST LOCA. NO ZD9 PART NO 0DZ620009BB DESCRIPTION ZENERS,MTZJ6.2B CAPACITOR LOCA. NO PART NO DESCRIPTION C1062 0CK103CK56A 0.01UF 1608 50V 10% C1063 0CK103CK56A 0.01UF 1608 50V 10% C1064 0CK103CK56A 0.01UF 1608 50V 10% C1 0CE476DF618 47UF STD 16V M C1065 0CE226SF6DC 22UF MVG 16V 20% C1 0CE226DF618 22UF STD 16V M C1066 0CE226SF6DC 22UF MVG 16V 20% C100 0CE106SF6DC 10UF MVG 16V 20% C1067 0CK103CK56A 0.01UF 1608 50V 10% C100 0CE475DK618 4.
REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION C1125 0CK103CK56A 0.01UF 1608 50V 10% C1172 0CK103CK56A 0.01UF 1608 50V 10% C1126 0CE226SF6DC 22UF MVG 16V 20% C1173 0CE226SH6DC 22UF MVG 25V 20% “ 0CE476SF6DC 47UF MVG 16V M “ 0CE476VH6DC 47UF MV 25V 20% C1127 0CK103CK56A 0.01UF 1608 50V 10% C1174 0CK103CK56A 0.01UF 1608 50V 10% C1128 0CK103CK56A 0.01UF 1608 50V 10% C1175 0CK103CK56A 0.01UF 1608 50V 10% C1129 0CK103CK56A 0.
REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO C1214 0CE227VF6DC 220UF MV 16V 20% C1325 0CK103CK56A 0.01UF 1608 50V 10% C1217 0CE107SF6DC 100UF MVG 16V M C1326 0CE226SF6DC 22UF MVG 16V 20% C1220 0CK103CK56A 0.01UF 1608 50V 10% C1327 0CK103CK56A 0.01UF 1608 50V 10% C1221 0CE476SF6DC 47UF MVG 16V M C1331 0CE226SF6DC 22UF MVG 16V 20% “ 0CE226SF6DC 22UF MVG 16V 20% C1332 0CK103CK56A 0.01UF 1608 50V 10% C1223 0CK103CK56A 0.
REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION C224 0CE476SF6DC 47UF MVG 16V M C713 0CE227DD618 220UF STD 10V M C225 0CE475DK618 4.
REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION C834 0CK1040K945 0.1UF 50V Z F TR L891 150-C02F C835 0CE226SF6DC 22UF MVG 16V 20% T801 6170VMCA06N TRANSFORMER,SMPS[COIL] EER4220 360UH C836 181-011B 0.001UF D 1.6KV J T830 6170VMCA13T TRANSFORMER,SMPS[COIL] EER4215 660UH C837 181-091N SL 100PF 1KV 10%,-10% C840 0CK1040K945 0.1UF 50V Z F TR C841 0CK1040K945 0.1UF 50V Z F TR JA1200 6630TGA004F CONNECTOR,D-SUB 15P 2.29MM C842 0CK1040K945 0.
REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA.
REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA.
