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Zenith L30W26 Service Manual

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  • Page 2: Service Manual

    Description of Controls ..........4 Adjustment Instructions ..........9 Troubleshooting............11 Diagrams ..............18 Parts List ..............27 Schematics ..............32 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 3: Product Safety

    When servicing this product, under no circumstances should the commercially available discharging wrist strap device, which should be original design be modified or altered without permission from Zenith removed for potential shock reasons prior to applying power to the unit under Electronics Corporation.

  • Page 4: Table Of Contents

    TABLE OF CONTENTS SPECIFICATIONS..............4 DESCRIPTION OF CONTROLS ...........5 ADJUSTMENT INSTRUCTION..........9 TROUBLESHOOTING ............11 EXTERNAL CONTROL DEVICE SETUP......12 PRINTED CIRCUIT BOARDS ..........18 BLOCK DIAGRAM...............22 EXPLODED VIEW...............26 EXPLODED VIEW PARTS LIST .........27 REPLACEMENT PARTS LIST ..........28 SCHEMATIC DIAGRAM............32 - 3 -...

  • Page 5: Specifications

    SPECIFICATIONS Product Specifications MODEL L30W26 Width (inches / mm) 29.9 / 759 Height (inches / mm) 21.5 / 546 Depth (inches / mm) 7.1 / 179.5 Weight (pounds / kg) 40.6 / 18.4 Power requirement AC 120V, 60Hz 1280 x 768(Dot)

  • Page 6: Description Of Controls

    DESCRIPTION OF CONTROLS Front Panel Controls POWER INPUT MENU ON OFF SELECT Remote Control Sensor POWER INPUT MENU ON OFF SELECT Power Standby Indicator Illuminates orange in stand- by mode, illuminates green when the Monitor is turned Main Power Button Sub Power Button Menu Button Input Select Button...

  • Page 7: Description Of Controls

    DESCRIPTION OF CONTROLS Back Panel External Speaker Jacks DC OUTPUT AUDIO L MONO VIDEO AC INPUT (DC 12V) S-VIDEO RGB 1 INPUT AUDIO RGB 2 INPUT RS 232C INPUT COMPONENT (DVD/DTV INPUT) (DIGITAL RGB INPUT) AV INPUT (PC/DTV INPUT) (CONTROL/SERVICE) AC Input Jack DC Output (DC 12V) Jack Audio Input Sound (R) (L) Jacks...

  • Page 8: Remote Control Functions

    DESCRIPTION OF CONTROLS Remote Control Functions POWER POWER SLEEP INPUT SELECT INPUT SELECT SLEEP DASP DASP PIP ARC PIP ARC TWIN PICTURE TWIN PICTURE SUB INPUT SWAP SWAP SUB INPUT MENU MUTE MENU MUTE switches the sound on or off. ENTER ENTER UP/DOWN...
  • Page 9 SPECIFICATIONS Monitor Image Display Specifications RGB2 RGB1 Horizontal Vertical Horizontal Vertical Resolution Resolution Frequency (KHz) Frequency (Hz) Frequency (KHz) Frequency (Hz) 31.468 70.09 31.468 70.09 640x350 640x350 37.861 85.08 37.861 85.08 31.469 70.08 31.469 70.08 720x400 720x400 37.927 85.03 37.927 85.03 31.469 59.94...

  • Page 10: Adjustment Instruction

    ADJUSTMENT INSTRUCTION 1. Application Object 3-2. EDID (The Extended Display Identification Data) Adjustment These instructions apply to all models of LCDs that use the MF-02HA chassis. (1) This is the “Plug and Play” function used by computers to identify and communicate with the LCD. (2) EDID DATA for DVI of MF-02HA 2.

  • Page 11: Adjustment Instructions

    ADJUSTMENT INSTRUCTION (2) Connection Diagram of measuring Equipment 3) Low Light has no special adjustment. 4) To adjust the High Light, stick the sensor to the 2nd (Automatic Adjustment) pattern(White). COLOR Select and adjust PC GAIN by pressing the INSTSRT ANALYZER button on the service remote.

  • Page 12: Troubleshooting

    TROUBLESHOOTING Symptom Cause Check Point 1) Check BD801, Q801, Q802, Q804 1. No power from all outputs 1) Fuse open 2) Check BD801, L801, L802, TH800, TH801 2) Error of rectifying circuit/EMI Filter 1) Check the second side parts 2. No power from +24V/+12V 1) Output terminal short 2) Check the reverse input of PH801, D916, CR802 /+18V...

  • Page 13: External Control Device Setup

    EXTERNAL CONTROL DEVICE SETUP The RS-232C input jack is used to control the Monitor’s functions using an external control device. Type of Connector: D-Sub 9-pin Male Pin name No connection RXD (Receive data) TXD (Transmit data) DTR (DTE side ready) DSR (DCE side ready) RTS (Ready to send) CTS (Clear to send)

  • Page 14: External Control Device Setup

    EXTERNAL CONTROL DEVICE SETUP 01. Power (Command:p) G To control Power On/Off of the Monitor. Transmission [k][a][ ][Set ID][ ][Data][Cr] Data 0 : Power Off 1 : Power On Acknowledgement Transmission / Receiving Protocol [a][ ][Set ID][ ][OK][Data][x] Data 0 : Power Off Transmission 1 : Power On [Command1][Command2][ ][Set ID][ ][Data][Cr]...
  • Page 15 EXTERNAL CONTROL DEVICE SETUP 03. Aspect Ratio (Command:c) 06. Volume Control (Command:f) G To adjust the screen format. You can also adjust the screen format using the ARC G To adjust volume. button on remote control or in the Picture Adj. menu. You can also adjust volume with the VOL buttons on remote control.
  • Page 16 EXTERNAL CONTROL DEVICE SETUP 12. OSD Select (Command:l) 09. Color (Command:i) G To select OSD (On Screen Display) on/off. G To adjust the screen color. You can also adjust color in the Picture menu. Transmission Transmission [k][l][ ][Set ID][ ][Data][Cr] [k][i][ ][Set ID][ ][Data][Cr] Data 0 : OSD off 1 : OSD on...
  • Page 17 EXTERNAL CONTROL DEVICE SETUP 17. Treble (Command:r) G To adjust the treble. You can also adjust treble in the Sound menu. Transmission [k][r][ ][Set ID][ ][Data][Cr] 15. PIP Size (Command:e) Data Min : 0 ~ Max : 64 * Transmit as Hexadecimal code. Acknowledgement G To select PIP size.
  • Page 18 EXTERNAL CONTROL DEVICE SETUP 20. Color Temperature (Command:u) G To set up with ‘normal, cool, warm, user’ in the color temperature. 23. B-Adjust (Command:$) Transmission G To adjust ‘B-adjust’ in the color temperature. [k][u][ ][Set ID][ ][Data][Cr] Transmission Data 0 : Normal 1 : Cool 2 : Warm 3 : User...

  • Page 19: Printed Circuit Boards

    PRINTED CIRCUIT BOARDS MAIN(TOP) - 18 -...
  • Page 20 PRINTED CIRCUIT BOARDS MAIN(BOTTOM) - 19 -...
  • Page 21 PRINTED CIRCUIT BOARDS SIDE A/V(TOP) SIDE A/V(BOTTOM) - 20 -...
  • Page 22 PRINTED CIRCUIT BOARDS CONTROL(TOP) CONTROL(BOTTOM) POWER(TOP) POWER(BOTTOM) - 21 -...

  • Page 23: Block Diagram

    BLOCK DIAGRAM 1. VSC Board - 22 -...
  • Page 24 BLOCK DIAGRAM 2. System Block Diagram & Function 2-1. Input Source Ranges (1) Input Paths : CVBS, S-Video, Component (480i, 480p, 720p, 1080i), RGB 1, RGB 2, RS-232C (2) Video System Recognition (Multi-system ; Refer to Product Specification) : NTSC M, NTSC 4.43, PAL, PAL M, PAL N, PAL 4.43, SECAM (3) RGB 1 Mode Compatibility : Up to SXGA 75Hz (See Compatibility Table in Product Specification in detail.) (4) RGB 2 Mode Compatibility...
  • Page 25 BLOCK DIAGRAM 3. Power - 24 -...
  • Page 26 BLOCK DIAGRAM 3-1. Signal flow If the AC Input voltage(1) is confirmed, this Input voltage is adjusted as a DC wave by the EMI FILTER(2) and the first adjusting part(3). This adjusted wave is input to PFC(4, Power Factor Correction) and the output voltage(+390Vdc) by the PFC circuit becomes a Main Input voltage of MAIN(5), STANBY(10) Switching part.

  • Page 27: Exploded View

    EXPLODED VIEW - 26 -...

  • Page 28: Exploded View Parts List

    EXPLODED VIEW PARTS LIST PART NO. DESCRIPTION 6305V00001A LCD ASSEMBLY,30” LCD PANEL LC30W01-A3 3091V00A73B CABINET ASSEMBLY 3809V00A33B BACK COVER ASSEMBLY 3501V00083A ASSEMBLY,BASE MW-30LZ10 3508V00306A DECO,REAR COVER 4980V00505B SUPPORTER ASSY,MODULE 6871VMN648A PCB ASSEMBLY,MAIN MF-02HA MW-30LZ10 6871VSN182B PCB ASSEMBLY,SUB A/V MF-02HA MW-30LZ10 4930V00226E HOLDER,AV 3141VPN048A...

  • Page 29: 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 : 2002.8.24 in the P/No. means as follows; CE : Electrolytic RN : Metal Film RF : Fusible...
  • Page 30 REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION D509 0DD226239AA CHIP KDS226 SOT-23 C279 0CE476SF6DC 47UF MVG 16V M SMD R/TP D510 0DD226239AA CHIP KDS226 SOT-23 C286 0CE476SF6DC 47UF MVG 16V M SMD R/TP CHIP KDS226 SOT-23 47UF MVG 16V M SMD R/TP D511 0DD226239AA...
  • Page 31 REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION C682 0CE105SK6DC 1UF MVG 50V M SMD R/TP JACK C683 0CE105SK6DC 1UF MVG 50V M SMD R/TP 47UF MV 25V 20% R/TP(SMD) SMD C685 0CE476VH6DC P101 6612J00010A JACK,RCA PPJ128A-1 A/V 2P MONO C687 0CE476SF6DC...
  • Page 32 DESCRIPTION P505 6630VGA001C CONNECTOR,D-SUB 15PIN 2.29MM SWITCH ACCESSORIES SW01 140-315A SWITCH,TACT SKHV17910B NON 12V 3828VA0338J MANUAL,OWNERS MF02HA MW-30LZ10 ZENITH SW001 6600VR1004A SWITCH,TACT SKHMPW 5P CHIP TACT NON 6710V00092T REMOTE CONTROLLER,MF-02HA W/O TXT SW02 140-315A SWITCH,TACT SKHV17910B NON 12V 6410VUH003A POWER CORD,PS204-001 VOLEX UL/C...

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