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 ...................................................................30 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...............................................................30 EXPLODED VIEW...............................................................32 EXPLODED VIEW PARTS LIST ......................
SPECIFICATIONS Product Specifications Model Horizontal Size (Inches) Height (Inches) Depth (Inches) Weight (lbs.) 39.2 29.2 14.4 50.7 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 Temperature Indicator Off Red Green Orange (flashing) Orange Red (flashing) Green (flashing) Orange 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 main switch 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. See menu pages for instructions on using the on-screen menus. Lamp indicator. The POWER, MENU, ENTER, VOLUME, and CHANNEL buttons work just as they do on your remote control.
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 be left/right symmetry screen. (Three blocks of the most outer block must be located the most outer block.) (Refer to Fig.
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 Remote Control for adjustment, 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 AUDIO(TOP) AUDIO(BOTTOM) - 27 -
PRINTED CIRCUIT BOARD CRM(TOP) CRM(BOTTOM) SIDE A/V - 28 -
PRINTED CIRCUIT BOARD CONTROL(TOP) CONTROL(BOTTOM) POWER S/W INTERFACE CASE DET PRE-AMP - 29 -
BLOCK DIAGRAM - 30 -
NOTES - 31 -
310 650 302 300 305 301 120 330 121 - 32 501 520 540 560 303 571 570 550 304 601 600 572 503 580 581 430 174 720 700 630 640 530 681 680 611 610 612 620 400 410 670 402 401 EXPLODED VIEW
EXPLODED VIEW PARTS LIST No. Description Part No.
REPLACEMENT PARTS LIST For Capacitor & Resistors, the charactors at 2nd and 3rd digit in the P/No. means as follows; LOCA.
REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION Q1208 0TR150400BA CHIP 2SA1504S(ASY) KEC D1 0DD184009AA KDS184S CHIP 85V 300MA Q1209 0TR387500AA CHIP 2SC3875S(ALY) KEC D100 0DRSE00038A SDC15 TVS SOT23 12.8V Q1210 0TR150400BA CHIP 2SA1504S(ASY) KEC D100 0DRDI00148A B140A DIODES R/TP SMA 40V Q1211 0TR387500AA CHIP 2SC3875S(ALY) KEC D102 0DR050008AA SD05.TC SOD323 5V 5A 15A Q1213 0TR387500AA CHIP 2SC3875S(ALY) KEC D103 0DR050008AA SD05.
REPLACEMENT PARTS LIST LOCA. NO PART NO ZD600 0DZ560009CF ZD601 0DZ560009CF ZD839 ZD9 DESCRIPTION LOCA. NO PART NO DESCRIPTION ZENERS,MTZJ5.6B C1058 0CK103CK56A 0.01UF 1608 50V 10% ZENERS,MTZJ5.6B C1059 0CK103CK56A 0.01UF 1608 50V 10% 0DZ300009BB ZENERS,MTZJ30B C1060 0CK103CK56A 0.01UF 1608 50V 10% 0DZ620009BB ZENERS,MTZJ6.2B C1061 0CK103CK56A 0.01UF 1608 50V 10% CAPACITOR C1062 0CK103CK56A 0.01UF 1608 50V 10% C1063 0CK103CK56A 0.
REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO C1139 0CE476VH6DC 47UF MV 25V 20% C1191 0CK103CK56A 0.01UF 1608 50V 10% C1140 0CK103CK56A 0.01UF 1608 50V 10% C1192 0CE476VH6DC 47UF MV 25V 20% C1141 0CK103CK56A 0.01UF 1608 50V 10% C1193 0CK103CK56A 0.01UF 1608 50V 10% C1142 0CE476SF6DC 47UF MVG 16V M C1194 0CK103CK56A 0.01UF 1608 50V 10% C1142 0CE226SF6DC 22UF MVG 16V 20% C1195 0CE226SF6DC 22UF MVG 16V 20% C1143 0CK103CK56A 0.
REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO C1241 0CC102CK41A 1000PF 1608 50V 5% C215 0CK105DF64A 1UF 2012 16V 20% C1244 0CK105DF64A 1UF 2012 16V 20% C216 0CK224DF56A 220000PF 2012 16V 10% C1244 0CC101CK41A 100PF 1608 50V 5% C217 0CK224DF56A 220000PF 2012 16V 10% C1245 0CC101CK41A 100PF 1608 50V 5% C219 0CE106SF6DC 10UF MVG 16V 20% C1246 0CC101CK41A 100PF 1608 50V 5% C223 0CE475DK618 4.
REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION C670 0CE475DK618 4.7UF STD 50V 20% C813 0CK1010K515 100P C671 0CE475DK618 4.7UF STD 50V 20% C814 0CK4710K515 470PF 50V K B TR 50V KB TS C673 0CE335DK618 3.
REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION JA201 6613V00010B JACK ASSY,PMJ016B 3P + SVHS AR1020 0RR0472C62A 47 OHM 1 / 16 W 1608 5.00% P1001 6612BBBHN7A JACK,DIN 743203004 30PIN VERTICAL AR1021 0RR0472C62A 47 OHM 1 / 16 W 1608 5.00% AR1022 0RR0472C62A 47 OHM 1 / 16 W 1608 5.00% AR1023 0RR0472C62A 47 OHM 1 / 16 W 1608 5.00% COIL & TRANSFORMER L1 0LA0102K119 INDUCTOR,10UH K AR1024 0RR0472C62A 47 OHM 1 / 16 W 1608 5.
REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION R258 0RD0102F609 10 OHM 1/6 W 5% R867 0RD5100F609 510 OHM 1/6 W 5.00% R261 0RD0102F609 10 OHM 1/6 W 5% R868 0RN1201F409 1.2K OHM 1/6 W 1.00% R3 0RD4703F609 470K OHM 1/6 W 5.00% R872 0RN3303G409 330K OHM 1/4 W 1.00% R4 0RD0752F609 75 OHM 1/6 W 5.00% R873 0RD2703G609 270K OHM 1/4 W 5.00% R5 0RD0752F609 75 OHM 1/6 W 5.00% R874 0RN5101F609 5.1K OHM 1/6 W 5.00% R53 0RD2200F609 220 OHM 1/6 W 5.
REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA.
