JVC LT-30E45SU Service Manual
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JVC LT-30E45SU, SERVICE MANUAL COPYRIGHT © 2005 Victor Company of Japan, Limited No.YA232 2005/8 WIDE LCD PANEL TELEVISION YA23220058 LT-30E45SU, LT-30E45SJ, LT-30E45SU /Z, LT-30E45SU /N TABLE OF CONTENTS 1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10 4 A
JVC LT-30E45SU, 1-2 (No.YA232) SPECIFICATION Design & specifications are subject to change without notice. Items Contents Dimensions ( W × H × D ) 84.7cm × 52.2cm × 26.0cm [Included stand] 84.7cm × 49.0cm × 10.2cm [TV only] Mass 14.8kg [Included stand] 13.0kg [TV only] Power Input AC100 to AC240 V, 50 Hz Power Consumption 150W (Standby: 4.0W) TV RF System CCIR B/G, I, D/K, L Colour System PAL / SECAM / NTSC 3.58 / NTSC 4.43 (NTSC: EXT only). Stereo System A2 (B/G, D/K), NICAM (B/G, I, D/K, L) Teletext System FLOF (Fastext), TOP, WST (World Standard System) Receiving Frequency VHF UHF CATV 47MHz t
(No.YA232)1-3 SECTION 1 PRECAUTION 1.1 SAFETY PRECAUTIONS (1) The design of this product contains special hardware, many circuits and components specially for safety purposes. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits
1-4 (No.YA232) 1.2 INSTALLATION 1.2.1 HEAT DISSIPATION If the heat dissipation vent behind this unit is blocked, cooling efficiency may deteriorate and temperature inside the unit will rise. The temperature sensor that protects the unit will be activated when internal temperature exceeds the pre-determined level and power will be turned off automatically.Therefore, please ma
JVC LT-30E45SU, (No.YA232)1-5 1.3 HANDLING LCD PANEL 1.3.1 PRECAUTIONS FOR TRANSPORTATION When transporting the unit, pressure exerted on the internal LCD panel due to improper handling (such as tossing and dropping) may cause damages even when the unit is carefully packed. To prevent accidents from occurring during transportation, pay careful attention before delivery, such as through explaining the handling instructions to transporters. Ensure that the following requirements are met during transportation, as
JVC LT-30E45SU, 1-6 (No.YA232) SECTION 2 SPECIFIC SERVICE INSTRUCTIONS 2.1 FEATURES T-V LINK When you have a T-V LINK compatible VCR connected to the EXT-2 Terminal on the TV,it is easier to set up the VCR and to view videos. ZOOM This function can change the screen size according to the picture aspect ratio. OFF TIMER This function can set the TV to automatically turn off after a set time. COLOUR SYSTEM If the picture is not clear or no colour appears, change the current colour system to another colour system. 2.2 MAIN DIFFERENCE LIST 2.3 21-PIN EURO CONNECTOR (SCART) : EXT-1 / EXT-2 (P-P= Peak to Peak, B-W= Blanking to white peak) Items LT-30E45SU LT-30E45SJ LT-30E4
JVC LT-30E45SU, (No.YA232)1-7 2.4 TECHNICAL INFORMATION 2.4.1 LCD PANEL This unit uses the flat type panel LCD (Liquid Crystal Display) panel that occupies as little space as possible, instead of the conventional CRT (Cathode Ray Tube), as a display unit. Since the unit has the two polarizing filter that are at right angles to each other, the unit adopts "normally black" mode, where light does not pass through the polarizing filter and the screen is black when no voltage is applied to the liquid crystals. 2.4.1.1 SPECIFICATIONS The following table shows the specifications of this unit. 2.4.1.2 PIXEL FAULT There are three pixel faults - bright fault , dark fault and flicker faul
1-8 (No.YA232) 2.5 BASIC OPERATION OF SERVICE MODE 2.5.1 HOW TO ENTER THE SERVICE MODE (1) Press [MENU] key on the remote control unit simultaneously to display the MENU SCREEN. (2) In the MENU SCREEN, press the [4] ,[7] ,[2] and [5] key. (3) The following menu appears on the screen. 2.5.2 HOW TO EXIT THE SERVICE MODE Press the [MENU] key to exit the Service mode. 2.5.3 CHANGE AND MEMO
JVC LT-30E45SU, (No.YA232)1-9 2.5.5 SERVICE MODE SETTING ITEMS Setting menu Setting items Variable range Setting value display blank color brack / red / green / blue black scart prescale 0 - 127 14 nicam prescale 0 - 127 35 fm/am prescale 0 - 127 16 subwoofer corner 0 - 7 5 subwoofer level 0 - 32 32 agc 0 - 31 16 calibration color temperature 5500K / 6500K / 7500K / 9300K / user 5500K color temperature-user 5500K / 6500K / 7500K / 9300K 5500K video format auto / ntsc / pal / secam / ntsc auto color space RGB / YPbPr SMPTE240 / YPbPr REC709 / YCbCr REC601 RGB test pattern none / solid color / vert bars. none color components all / red / green / blue. all solid field level 0 - 64 33 initial aps
JVC LT-30E45SU, 1-10 (No.YA232) SECTION 3 DISASSEMBLY 3.1 DISASSEMBLY PROCEDURE NOTE: • Make sure that the power cord is disconnected from the outlet. • Pay special attention not to break or damage the parts. • When removing each board, remove the connectors as required. Taking notes of the connecting points (connector numbers) makes service procedure manageable. • Make sure that there is no bent or stain on the connectors before inserting, and firmly insert the connectors. 3.1.1 REMOVING THE STAND (Fig.1) (1) Remove the 4 screws [A], then remove the STAND. 3.1.2 REMOVING THE REAR COVER (Fig.1) • Remove the STAND. (1
JVC LT-30E45SU, (No.YA232)1-11 Fig.1 MAIN PWB M L G E W K D B C J H F T Q N P R A FAV PWB CONTROL BASE CONTROL KNOB REAR COVER STAND TERMINAL BASE NOISE FILTER PWB AMPLIFIER PWB LED PWB POWER UNIT RIGHT FRAME LEFT FRAME POWER PWB CONTROL BUTTON PWB FRONT
JVC LT-30E45SU, 1-12 (No.YA232) 3.1.11 REMOVING THE SPEAKER (Fig.2) • Remove the STAND. • Remove the REAR COVER. (1) Remove the 4 screws [A], then remove the SPEAKER with SPEAKER BASE. (2) Remove the 4 screws [B], then remove the SUB SPEAKER (L/R). (3) Remove the 8 screws [C], then remove the SPEAKER from the SPEAKER BASE. 3.1.12 REMOVING THE LCD PANEL UNIT (Fig.2) • Remove the STAND. • Remove the REAR COVER. (1) Remove the 4 screws [D] and the 12 screws [E], then remove the LCD PANEL UNIT with the MAIN BASE. (2) Remove the 4 screws [F], then remove the MAIN BASE from the LCD PANEL UNIT. NOTE: • Pay special attention n
JVC LT-30E45SU, 1-14 (No.YA232) 3.2 MEMORY IC REPLACEMENT • This model uses the memory IC. • This memory IC stores data for proper operation of the video and drive circuits. • When replacing, be sure to use an IC containing this (initial value) data. 3.2.1 SETTINGS OF FACTORY SHIPMENT 3.2.1.1 BUTTON OPERATION 3.2.1.2 REMOTE CONTROL DIRECT OPERATION 3.2.1.3 REMOTE CONTROL MENU OPERATION (1) PICTURE (2) WINDOW (3) AUDIO (4) OPTIONS Setting item Setting position POWER Off VOLUME 21 TV/AV TV Setting item Setting position ZOOM AUTO Setting item Setting position brightness 61 Contrast 36 Sharpness 50 Color 43 tint 50 phase (PC signal input only) 50 Setting item Setting position im
JVC LT-30E45SU, (No.YA232)1-15 3.3 REPLACEMENT OF CHIP COMPONENT 3.3.1 CAUTIONS (1) Avoid heating for more than 3 seconds. (2) Do not rub the electrodes and the resist parts of the pattern. (3) When removing a chip part, melt the solder adequately. (4) Do not reuse a chip part after removing it. 3.3.2 SOLDERING IRON (1) Use a high insulation soldering iron with a thin pointed end of it. (2) A 30w soldering iron is recommended for easily removing parts. 3.3.3 REPLACEMENT STEPS 1. How to remove Chip parts [Resistors, capacitors, etc.] (1) As shown in the figure, push the part with tweezers and alternate
JVC LT-30E45SU, (No.YA232) AV & MULTIMEDIA COMPANY DISPLAY CATEGORY 12, 3-chome, Moriya-cho, Kanagawa-ku, Yokohama-city, Kanagawa-prefecture, 221-8528, Japan Victor Company of Japan, Limited VPT Printed in Japan
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