Text preview for : LT-26D50BJ.pdf part of JVC LT-26D50BJ Service manual, user manual, schematic diagram, parts list for LCD INTEGRATED DIGITAL TV models: LT-26D50BJ , LT-26D50SJ
Back to : LT-26D50BJ.part01.rar | Home
SERVICE MANUAL
LCD INTEGRATED DIGITAL TV
12 2004 YA205
dupa tor
BASIC CHASSIS
LT-26D50BJ, LT-26D50SJ
FL
TABLE OF CONTENTS
1 2 3 4 5
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23
COPYRIGHT © 2004 Victor Company of Japan, Limited
No.YA205 2004/12
SPECIFICATION
Items Dimensions ( W × H × D ) Mass Power Input Power Consumption TV RF System Colour System Stereo System Teletext System Receiving Frequency Contents 70.3cm × 56.0 cm × 29.5 cm [Included stand] 70.3cm × 49.1 cm × 10.7 cm [TV only] 15.5kg [Included stand] 13.0kg [TV only] AC110V - AC240 V, 50 Hz / 60 Hz 135W (Standby: 2.6W) Analog CCIR (B/G, I, D/K, L) Digital DVB-T PAL, SECAM, NTSC 3.58/4.43 [EXT only] NICAM (B/G, I, D/K, L), A2 (B/G, D/K) Analog FLOF (Fastext level 2.5), TOP, WST(World Standard system) Digital MHEG 5 UK profile Analog VHF: 47MHz - 470MHz UHF: 470MHz - 862MHz VIF 38.9MHz (B/G, I, D/K, L) SIF 33.4MHz (5.5MHz :B/G) 32.9MHz (6.0MHz :I) 32.4MHz (6.5MHz :D/K)
Intermediate Frequency
Colour Sub Carrier Frequency LCD panel
Screen Size
Display Pixels Speaker
Audio Power Output
Aerial terminal (VHF/UHF)
EXT-1 / EXT-2 (Input / Output) EXT-3 (Input)
EXT-4 (Input)
PC (RGB) Input
dupa tor
Digital UHF: 474MHz - 850MHz PAL 4.43MHz SECAM 4.40625MHz / 4.25MHz NTSC 3.58MHz / 4.43MHz 26V-inch wide aspect (16:9) Diagonal : 66cm (H:57.6cm × V : 32.4cm) Horizontal : 1366 dots × Vertical : 768 dots (W-XGA) 6.6cm, round type × 2 (Oblique corn) 10W + 10W Analog 75 unbalanced, coaxial Digital 75 unbalanced, coaxial 21-pin Euro connector (SCART socket ) × 2 S-Video Mini-DIN 4 pin × 1 Y: 1V (p-p), Positive (Negative sync provided), 75 C: 0.286V (p-p) (Burst signal), 75 Video 1V (p-p), Positive (Negative sync provided), 75 , RCA pin jack × 1 Audio 500mV (rms), High impedance, RCA pin jack × 2 Component Video RCA pin jack × 3 1125i Y : 1V (p-p) (Sync signal: ±0.35V(p-p), 3-value sync.), 75 Pb/Pr : ±0.35V(p-p), 75 625p / 525p / 625i / 525i Y : 1V (p-p), Positive (Negative sync provided), 75 Cb/Cr : 0.7V(p-p), 75 Audio 500mV(rms) (-4dBs), high impedance, RCA pin jack × 2 D-sub 15pin × 1 R/G/B : 0.7V (p-p), 75 HD / VD : 1V (p-p) to 5V (p-p), high impedance < Available signal > VGA : 640 pixels × 480 pixels (Horizontal : 31.5kHz / Vertical : 60Hz) XGA : 1024 pixels × 768 pixels (Horizontal : 48.4kHz / Vertical : 60Hz) 500mV (rms), Low impedance, RCA pin jack × 2 3.5mm stereo mini jack × 1 RM-C1813H (AA/R6 dry cell battery × 2) Design & specifications are subject to change without notice.
Audio output Headphone Remote Control Unit
1-2 (No.YA205)
SECTION 1 PRECAUTION
1.1 SAFETY PRECAUTIONS (1) The design of this product contains special hardware and 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. Service should be performed by qualified personnel only. (2) Alterations of the design or circuitry of the product should not be made. Any design alterations or additions will void the manufacturer's warranty and will further relieve the manufacturer of responsibility for personal injury or property damage resulting therefrom. (3) Many electrical and mechanical parts in the product have special safety-related characteristics. These characteristics are often not evident from visual inspection nor can the protection afforded by them necessary be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in the Parts List of Service Manual. Electrical components having such features are identified by shading on the schematics and by ( ) on the Parts List in the Service Manual. The use of a substitute replacement which does not have the same safety characteristics as the recommended replacement part shown in the Parts List of Service Manual may cause shock, fire, or other hazards. (4) The leads in the products are routed and dressed with ties, clamps, tubing's, barriers and the like to be separated from live parts, high temperature parts, moving parts and / or sharp edges for the prevention of electric shock and fire hazard. When service is required, the original lead routing and dress should be observed, and it should be confirmed that they have been returned to normal, after re-assembling.
dupa tor
WARNING (1) The equipment has been designed and manufactured to meet international safety standards. (2) It is the legal responsibility of the repairer to ensure that these safety standards are maintained. (3) Repairs must be made in accordance with the relevant safety standards. (4) It is essential that safety critical components are replaced by approved parts. (5) If mains voltage selector is provided, check setting for local voltage.
(No.YA205)1-3
1.2
INSTALLATION 1.2.3 INSTALLATION REQUIREMENTS To ensure safety in an emergency such as an earthquake, and to prevent accidents, ensure that measures are taken to prevent the TV dropping or falling over. Use the supplied screws to firmly attach the supplied hooks (OPTION) to the back of the TV, and use commercially available cord to fix the TV to rigid components such as walls and columns.
Wall
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 make sure pay attention not to block the heat dissipation vent as well as the ventilation outlet behind the unit and ensure that there is room for ventilation around it.
Ventilation hole
Hook
Ventilation hole
The hook for fall prevention(option)
1.2.2 INSTALLATION REQUIREMENTS Ensure that the minimal distance is maintained, as specified below, between the unit with and the surrounding walls, as well as the floor etc.Install the unit on stable flooring or stands.Take precautionary measures to prevent the unit from tipping in order to protect against accidents and earthquakes.
dupa tor
It fixes in a band. TV Stand
*Diagram differs from actual appearance.
200 mm 200 mm 150 mm 150 mm 50 mm
1.2.4 NOTES ON HANDLING (1) WHEN TAKING UNIT OUT OF A PACKING CASE When taking the unit out of a packing case, do not grasp the upper part of the unit. If you take the unit out while grasping the upper part, the LCD PANEL may be damaged because of a pressure. Instead of grasping the upper part, put your hands on the lower backside or sides of the unit. (2) AS FOR PRESSING OR TOUCHING A SPEAKER Be careful not to press the opening of the speaker in the lower part of the unit and around them since the decorative sheet on the surface of the openings may be deformed.
1-4 (No.YA205)
1.3
HANDLING LCD PANEL 1.3.2 OPTICAL FILTER (ON THE FRONT OF THE LCD PANEL) (1) Avoid placing the unit under direct sunlight over a prolonged period of time. This may cause the optical filter to deteriorate in quality and COLOUR. (2) Clean the filter surface by wiping it softly and lightly with a soft and lightly fuzz cloth (such as outing flannel). (3) Do not use solvents such as benzene or thinner to wipe the filter surface. This may cause the filter to deteriorate in quality or the coating on the surface to come off. When cleaning the filter, usually use the neutral detergent diluted with water. When cleaning the dirty filter, use water-diluted ethanol. (4) Since the filter surface is fragile, do not scratch or hit it with hard materials. Be careful enough not to touch the front surface, especially when taking the unit out of the packing case or during transportation. 1.3.3 PRECAUTIONS FOR REPLACEMENT OF EXTERIOR PARTS Take note of the following when replacing exterior parts (REAR COVER, FRONT PANEL, etc.): (1) Do not exert pressure on the front of the LCD panel (filter surface). It may cause irregular COLOUR. (2) Pay careful attention not to scratch or stain the front of the LCD panel (filter surface) with hands. (3) When replacing exterior parts, the front (LCD panel) should be placed facing downward. Place a mat, etc. underneath to avoid causing scratches to the front (filter surface).
dupa tor
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 the LCD panel of this unit is made of glass and therefore fragile: (1) USE A SPECIAL PACKING CASE FOR THE LCD PANEL When transporting the LCD panel of the unit, use a special packing case (packing materials). A special packing case is used when a LCD panel is supplied as a service spare part. (2) ATTACH PROTECTION SHEET TO THE FRONT Since the front (display part) of the panel is vulnerable, attach the protection sheet to the front of the LCD panel before transportation. Protection sheet is used when a LCD panel is supplied as a service spare part. (3) AVOID VIBRATIONS AND IMPACTS The unit may be broken if it is toppled sideways even when properly packed. Continuous vibration may shift the gap of the panel, and the unit may not be able to display images properly. Ensure that the unit is carried by at least 2 persons and pay careful attention not to exert any vibration or impact on it. (4) DO NOT PLACE EQUIPMENT HORIZONTALLY Ensure that it is placed upright and not horizontally during transportation and storage as the LCD panel is very vulnerable to lateral impacts and may break. During transportation, ensure that the unit is loaded along the traveling direction of the vehicle, and avoid stacking them on one another. For storage, ensure that they are stacked in 2 layers or less even when placed upright.
(No.YA205)1-5
SECTION 2 SPECIFIC SERVICE INSTRUCTIONS
2.1 FEATURES ZOOM This function can change the screen size according to the picture aspect ratio. DIGITAL VNR This function cuts down the amount of noise in the original picture. SUPER DIGIPURE This function uses the latest in digital technology to give you a natural-looking picture. MOVIE THEATRE This function displays a cinema film picture more smoothly and naturally on the screen. 3D CINEMA SOUND You can enjoy sounds with a widerambience. DVB-T (DIGITAL TERRESTRIAL BROADCASTING) This TV can receive both Digital terrestrial broadcasting (DVBT) and Analogue terrestrial broadcasting. D.I.S.T. (Digital Image Scaling Technology) This system uses line interpolation to double the number of scanning lines and achieve high resolution, flicker-free picture. COLOUR MANAGEMENT This function ensures dull colours are compensated to produce natural hues. PICTURE MANAGEMENT This function makes it easier to see the dark areas when a picture has many dark areas, and makes it easier to see the bright areas when a picture has many bright areas.
2.2
FRONT PANEL COLOUR
2.3
Pin No. 1 2
dupa tor
MAIN DIFFERENCE LIST Item LT-26D50BJ BLACK LT-26D50SJ SILVER 21-PIN EURO CONNECTOR (SCART) : EXT-1 / EXT-2
Signal designation AUDIO R output AUDIO R input AUDIO GND GND (B) B input AUDIO L output Matching value EXT-1 EXT-2 500mV(rms) (Nominal), Low impedance Used (TV OUT) Used (R1) Used Used (LINE OUT) Used (R2) Used 500mV(rms) (Nominal), High impedance 500mV(rms) (Nominal), Low impedance 3 4 5 6 7 Used (TV OUT) Used Used (LINE OUT) Used AUDIO L input 500mV(rms) (Nominal), High impedance 700mV(B-W), 75 Low : 0V-3V High : 8V-12V, High impedance Used (L1) Used Used Used (L2) Used Used 8 FUNCTION SW (SLOW SW) SCL / T-V LINK 9 GND (G) Used Used 10 11 Not used Used (SCL2 / TV-LINK) G input SDA 700mV(B-W), 75 Used Used Used 12 14 Not used Used Used Used (SDA2) 13 15 GND (R) GND (YS) Not used R / C input R : 700mV(B-W), 75 C : 300mV(P-P), 75 Used (R) Used Used (C2/R) 16 17 19 18 20 21 Ys input (FAST SW) GND (VIDEO input) Low : 0V-0.4V, High : 1V-3V, 75 Used GND (VIDEO output) Used Used Used Used VIDEO output 1V(P-P) (Negative sync), 75 1V(P-P) (Negative sync), 75 Used (TV OUT) Used Used Used (LINE OUT) VIDEO / Y input COMMON GND Used Used
(P-P= Peak to Peak, B-W= Blanking to white peak)
[Pin assignment]
20 18 16 14 12 10 8 6 4 2
21
19 17
15
13
11
9
7
5
3
1
1-6 (No.YA205)
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. Item Maximum dimensions ( W × H × D ) Weight Effective screen size Aspect ratio Drive device / system Resolution Pixel pitch (pixel size) Displayed colour Brightness 4.5kg Diagonal: 660.4mm (H:575.7mm × V : 323.7mm) 16 : 9 a-Si-TFT, active matrix system Horizontally 1366 × Vertically 768 × RGB Horizontally:0.4215mm, Vertically:0.4215mm
2
Specifications 627mm × 374mm × 52mm 26V type
Remarks
3147264 dots in total 256 colours for R, G, and B
dupa tor
16777216 colours 500cd/m 800: 1 8ms Contrast ratio View angle Response time Horizontally: 170°, Vertically: 170° Vertical stripe Surface polarizer Colour filter Backlight Anti-Glare type, Low reflective coat U-type Cold cathode fluorescent lamp × 8 6.5V Power supply voltage in LCD Panel interface system Power supply voltage in inverter 18V LVDS (Low Voltage Differential Signaling) 2.4.1.2 PIXEL FAULT There are three pixel faults - bright fault , dark fault and flicker fault - that are respectively defined as follows. BRIGHT FAULT In this pixel fault, a cell that should not light originally is lighting on and off. For checking this pixel fault, input ALL BLACK SCREEN and find out the cell that is lighting on and off.
DARK FAULT In this pixel fault, a cell that should light originally is not lighting or lighting with the brightness twice as brighter as originally lighting. For checking this pixel fault, input 100% of each R/G/B colour and find out the cell that is not lighting.
FLICKER FAULT In the pixel fault, a cell that should light originally or not light originally is flashing on and off. For checking this pixel fault, input ALL BLACK SCREEN signal or 100% of each RGB colour and find out the cell that is flashing on and off.
(No.YA205)1-7
2.4.2 MAIN CPU PIN FUNCTION [IC7501 : DIGITAL SIGNAL PWB ASS'Y]
Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 Pin name TCK TMS TDI TDO P2.8 P2.9 P2.10 P2.11 P2.12 P2.13 P2.14 P2.15 VSS33 VDD33 P4.5 A20 A19 A18 A17 VSS25 VDD25 A16 A8 A7 A9 A6 A5 A10 A11 A12 VSS33 VDD33 A4 A3 A2 A1 A0 A13 ARAS/A14 CAS/A15 VSS33 VDD33 MEMCLK CSSDRAM CLKEN CSROM RD UDQM LDQM WR D15 VSS33 VDD33 D7 D0 D14 D8 D6 D1 VSS33 VDD33 D13 D9 D5 I/O I I I O O O O O O O I O I O O O O O I O O O O O O O O O I O O O O O O O O I O O O O O O O O I/O I I/O I/O I/O I/O I/O I/O I I/O I/O I/O Function Test purpose Test purpose Test purpose Test purpose Not used Blue for OSD Blue for OSD Blue for OSD Blue for OSD Blue for OSD Not used Request for chassis CPU communication GND 3.3V Not used Program ROM address for main CPU Program ROM address for main CPU Program ROM address for main CPU Program ROM address for main CPU GND 2.5V Program ROM address for main CPU Program ROM address for main CPU Program ROM address for main CPU Program ROM address for main CPU Program ROM address for main CPU Program ROM address for main CPU Program ROM address for main CPU Program ROM address for main CPU Program ROM address for main CPU GND 3.3V Program ROM address for main CPU Program ROM address for main CPU Program ROM address for main CPU Program ROM address for main CPU Program ROM address for main CPU Program ROM address for main CPU Program ROM address for main CPU Program ROM address for main CPU GND 3.3V Clock for memory Chip select for memory Clock enable for memory Chip select for memory Read for memory Control buffer of memory Control buffer of memory Write for memory Program ROM data for main CPU GND 3.3V Program ROM data for main CPU Program ROM data for main CPU Program ROM data for main CPU Program ROM data for main CPU Program ROM data for main CPU Program ROM data for main CPU GND 3.3V Program ROM data for main CPU Program ROM data for main CPU Program ROM data for main CPU Pin 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 Pin name D2 D12 D10 VSS33 VDD33 D4 D3 D11 RSTIN POWER P3.1 REMOCON P3.3 P3.4 P3.5 P3.6 P3.7 MTST MTSR VSS33 VDD33 VSS25 VDD25 TXD0 RXD0 P3.12 CLK P3.15 P5.14 P5.15 TRIG_IN TRIG_OUT P6.2 P6.3 P6.4 P6.5 IRQ VSYNC HSYNC COR/RSTOUT BLANK VDD33 VSS33 XTAL1 XTAL2 VSSA VDDA R G B VSSA VDDA CVBS2 VSSA VDDA CVBS1B CVBS1A VSSA VDDA KEY1 KEY2 MECA_SW P5.3 TMODE I/O I/O I/O I/O I I/O I/O I/O I O O I I O O O O O I I I O O O O O O O O O O O I/O O O I I O O I I O I O O O I I I I I I I I I I I Function Program ROM data for main CPU Program ROM data for main CPU Program ROM data for main CPU GND 3.3V Program ROM data for main CPU Program ROM data for main CPU Program ROM data for main CPU Reset Sleep state release for chassis CPU [Relese : L] Not used Remote control Clock for OSD Red for OSD Red for OSD Red for OSD Red for OSD Data transmission for chassis CPU communication Data receive for chassis CPU communication GND 3.3V GND 2.5V Communication for adjustment Communication for adjustment Red for OSD Clock for chassis CPU communication Green for OSD Green for OSD Green for OSD Green for OSD Green for OSD Green for OSD I2C bus clock (for main memory) I2C bus Data (for main memory) Teletext signal select [Analog RGB : H / Digital RGB : L] Not used Vertical sync Horizontal sync Not used Ys for OSD / Teletext 3.3V GND 6MHz for system clock 6MHz for system clock GND 2.5V R for OSD / Teletext G for OSD / Teletext B for OSD / Teletext GND 2.5V Video for Teletext GND 2.5V Video for Teletext Video for Teletext GND 2.5V Key scan data 1 [ON : H] Key scan data 2 [ON : H] Main power ON / OFF control [ON : L] Not used Test purpose
dupa tor
1-8 (No.YA205)
2.4.3 SUB (CHASSIS) CPU PIN FUNCTION [IC7001 : DIGITAL SIGNAL PWB ASS'Y]
Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Pin name LB_PRO P_MU JP_CSB A_MU M_MU PC_SEL ON_TIMER ILA0 ILA1 ILA2 POW_LED WORD MI_CK MI_TX MI_RX MI_REQ VDD FOSC VSS X1 X0 VDD OSC1 OSC0 MODE BS1.5CTL A92RES BS_RST LIP_RST SOFT_OFF VMUTE VOUTENB MDR_CON AVDD BS_POW DsyncSW2 LB_POW NC HOTPLUG MECA_SW MAIN_POW MSP_RST VREFAFT2 AFT1 KEY2 KEY1 NC NC AC_IN I/O O O O O O O O O O O O O I I O O I O I O I I O I O O O O O I O I I O O O O I I O O I I I I I O O I Function Not used Picture muting [Muting = H] Not used (NC) Audio muting [Muting = H] Audio muting (for AUDIO OUT) [Muting = H] RGB(PC) INPUT select POWER INDICATOR (LED) brightness [LOW = L] LCD back light lighting LCD panel overshoot refresh timing Not used POWER LED lighting [ON = H] Not used Clock for main CPU communication Data receive for main CPU communication Data transmission for MAIN CPU communication Data request for main CPU communication [Request = L] 3.3V power supply Not used (NC) GND Not used : Low speed oscillatior Not used : Low speed oscillatior 3.3V power supply System clock osillation (crystal) : 16MHz System clock osillation (crystal) : 16MHz Single chip mode Digital tuner power / reset control Reset for IC1001(3D YC SEP / COLOUR DEMODULAT) [Reset = H] Reset for Digital tuner power / reset control Reset for Sound delay (Lip sync) Not used Picture muting request from digital tuner Video cutoff for digital tuner Not used: System cable connection monitor for PDP 3.3V power supply Digital tuner power control Sync select for DIGITAL-IN [Cotrolled with 99-pin] Power control for low bias line Not used (NC) Not used : Video communiation monitor for receiver unit (PDP) Mechanical monitor for POWER switch [Push = L] Main power control [ON = L] AUDIO OUT output mode select [VARIABLE = L] Not used Not used : AFT voltage for sub tuner AFT voltage for VHF/UHF tuner Key scan data for front switch (MENU/CH+/CH-) Key scan data for front switch (VOL+/VOL-) Not used (NC) Not used (NC) AC power pulse for timer clock Pin 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 Pin name BS_TXD BS_RXD NC VREF+ PDP_TX PDP_RX SDA0 SCL0 SDA_DVI SCL_DVI AVSS DIGII_PHOT AGC EXT_YS1 EXT_YS2 VDD DIGI_PRO GCR_RST GR_ON SYNC_SEL NC NC SBD5 SBT5 NMI COMP REMO VSYNC WAKE POWERGOOD NC RST VDD SCL3A SDA3A SCL3B SDA3B DIGI_SYNCSEL DIGI_LRSW DIGI_INT DVI_RST VSS SCL5055 VFORMATSEL SDA5055 OSD_MODE_SEL NC 15K/OTH DsyncSW1 57 BUSY I/O O I O I O I I/O O I/O O I I I I I O O O O O O I/O I I I I I I I O I I O I/O O I/O O O I O O O I/O O O O O I Function Data transmission for digital tuner communication Data receive for digital tuner communication Not used (NC) 3.3V power supply Data transmission for SUB (DRIVE) CPU communication Data receive for SUB (DRIVE) CPU communication Data for Inter IC (serial) bus : EEP-ROM (IC7002) Clock for Inter IC (serial) bus : EEP-ROM (IC7002) Not used : Data for Inter IC (serial) bus for panel communication Not used : Clock for Inter IC (serial) bus for panel communication GND Not used: Photo sensor for DIGITAL-IN illegal copy protection Not used Not used Not used 3.3V power supply Not used : For DIGITAL-IN (HDMI) Not used (NC) Not used (NC) Not used : Sync select for digital tuner Not used (NC) Not used (NC) Not used : Data for writing on board (connect CN01P : for Frash ROM type) Not used : Clock for writing on board (connect CN01P : for Frash ROM type) 3.3V power supply Not used : AV COMPULINK lll control Remote control V. sync pulse Reset for sub(chassis) CPU Power error detection [NG = H] Not used (NC) Reset for MAIN CPU [Reset = L] 3.3V power supply Clock for Inter IC (serial) bus control Data for Inter IC (serial) bus control Clock for Inter IC (serial) bus control Data for Inter IC (serial) bus control Not used Not used : For DIGITAL-IN (HDMI) Not used : Reset for HDMI process [Reset = L ] Not used : Reset for DVI format conversion GND Clock for Inter IC (serial) bus : JCC5055 (DIST process) Digital tuner clock control Data for Inter IC (serial) bus : JCC5055 (DIST process) Not used : OSD mode select Not used (NC) Main video select [Fixed = H] Not used : Sync select for DIGITAL-IN [Cotrolled with 36-pin] Busy monitor for JCC5057 (New DIST process)
dupa tor
(No.YA205)1-9
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 2 screws [A], then remove the STAND COVER. (2) Remove the 4 screws [B], then remove the STAND. 3.1.6 REMOVING THE RECEIVER PWB / CONNECTOR PWB (Fig.1) · Remove the STAND. · Remove the REAR COVER. (1) Remove the 3 screws [U], then remove the TUNER BASE and SIDE SHIELD CASE. (2) Remove the 4 screws [O] then remove the RECEIVER PWB. (3) Remove the 4 screws [P] then remove the RECEIVER PWB BRACKET. (4) Remove the 2 screws [Q] then remove the CONNECTOR PWB.
3.1.2 REMOVING THE REAR COVER (Fig.1) · Remove the STAND. (1) Remove the JACK COVER (L/R). (2) Remove the 7 screws [C], the 4 screws [D], and the 1 screw [E]. (3) Remove the REAR COVER.
3.1.3 REMOVING THE POWER PWB / REGULATOR PWB (Fig.1) · Remove the STAND. · Remove the REAR COVER. (1) Remove the 5 screws [F], then remove the FAN BRACKET. (2) Remove the 1 screw [G], then remove the POWER CORD HOLDER. (3) Remove the POWER CORD from the POWER PWB. (4) Remove the REGULATOR PWB. (5) Remove the 5 screw [H], then remove the POWER PWB.
3.1.4 REMOVING THE ANALOG SYGNAL PWB (Fig.1) · Remove the STAND. · Remove the REAR COVER. · Remove the FAN BRACKET. (1) Remove the 3 screws [J] then remove the TERMINAL BASE. (2) Remove the 6 screws [K] and the 2 screws [Y] then remove the ANALOG SYGNAL PWB.
3.1.5 REMOVING THE FRONT CONTROL PWB CONTROL / FRONT SENSOR PWB (Fig.1) · Remove the STAND. · Remove the REAR COVER. (1) Remove the 2 screws [L], then remove the CONTROL KNOB ASSY. (2) Remove the 2 screws [M], then remove the FRONT CONTROL PWB. (3) Remove the FRONT SENSOR PWB.
dupa tor
3.1.7 REMOVING THE DIGITAL TUNER UNIT / DIGITAL SIGNAL PWB (Fig.1) · Remove the STAND. · Remove the REAR COVER. · Remove the TUNER BASE. (1) Remove the 9 screws [S] and the 3screws [T], then remove the SHIELD COVER. (2) Remove the 5 screws [V], then remove the DIGITAL SIGNAL PWB. (3) Remove the 3 screws [W] then remove the DIGITAL TUNER BRACKET. (4) Remove the 2 screws [X] then remove the TOP SHIELD CASE. (5) Remove the DIGITAL SIGNALPWB. 3.1.8 REMOVING THE SPEAKER (Fig.2) · Remove the STAND. · Remove the REAR COVER. (1) Remove the 5 screws [a], then remove the SPEAKER BOX. (2) Remove the 4 screws [b], then remove the SPEAKER (L /R). (3) Remove the 4 screws [c], then remove the DUCT(L/R). NOTE: Since the speaker is attached in a certain direction, attach the speaker in the same correct direction as it has been attached. 3.1.9 REMOVING THE LCD PANEL UNIT (Fig.2) · Remove the STAND. · Remove the REAR COVER. (1) Remove the 6 screws [d]. (2) Remove the LCD PANEL UNIT. (3) Remove the 7 screws [f]. then remove the MAIN BASE. (4) Remove the 2 screws [g]. then remove the TOP FRAME. (5) Remove the 2 screws [h]. then remove the BOTTOM FRAME.
1-10 (No.YA205)
JACK COVER JACK COVER
STAND COVER
E D
B
C D
C
D
STAND
A
TUNER BASE
dupa tor
T
SHIELD COVER
C
U
REAR COVER
S
REGULATOR PWB
S
FAN BRACKET
a
H
F
V
POWER CORD
DIGITAL TUNER UNIT
RECEIVER PWB
O
X
G
INSULATOR
TOP SHIELD CASE
W
POWER PWB
RECEIVER PWB BRACKET
P
POWER CORD HOLDER
K
Q
CONNECTOR PWB
ANALOG SIGNAL PWB
K
DIGITAL SIGNAL PWB
K
J
TERMINAL BASE
Y L M
a
FRONT CONTROL PWB FRONT SENSOR PWB CONTROL KNOB ASSY
FRONT
Fig.1 (No.YA205)1-11
f f
MAIN BASE
d g
dupa tor
TOP FRAME
d
h
a
LCD PANEL UNIT
h
BOTTOM FRAME
SPEAKER BOX
b
DUCT
DUCT SHEET
c
b
DUCT SPEAKER DUCT SHEET
c
FRONT PANEL
FRONT
SPEAKER
Fig.2 1-12 (No.YA205)
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 MEMORY IC REPLACEMENT PROCEDURE 1. Power off Switch off the power and disconnect the power plug from the AC outlet. 2. Replace the memory IC Be sure to use the memory IC written with the initial setting values. 3. Power on Connect the power plug to the AC outlet and switch on the power. 4. Receiving channel setting Refer to the OPERATING INSTRUCTIONS and set the receive channels (Channels Preset) as described. 5. User setting Check the user setting items according to the given in page later. Where these do not agree, refer to the OPERATING INSTRUCTIONS and set the items as described.
dupa tor
3.2.2 SERVICE MODE SETTING SERVICE MODE SCREEN SETTING ITEM
6. SERVICE MODE setting Verify what to set in the SERVICE MODE, and set whatever is necessary (Fig.1). Refer to the SERVICE ADJUSTMENT for setting.
MAIN MENU SCREEN
Setting items
Settings Adjust Fixed Fixed
Item No.
Video system setting Audio system setting Drive system setting
S001 - S039 T001 - T010
SERVICE MENU 1.ADJUST 2.SELF_CHK 3.I2C STOP
Panel control system setting Main CPU system setting
P001 - P010 Z001 - Z010
Fixed
D001 - D187
Fixed
ADJUSTMENT MODE SCREEN
S001 PREPARE 0 PAL50 FULL STD H
Fig.1
(No.YA205)1-13
3.2.3 SETTINGS OF FACTORY SHIPMENT 3.2.3.1 POWER CHANNEL VOLUME TV/AV 3.2.3.3 BUTTON OPERATION Setting item Off PR1 10 TV REMOTE CONTROL MENU OPERATION (4) FEATURES Setting position BRIGHT COOL AUTO (LOW) Setting item SLEEP TIMER CHILD LOCK APPEARANCE BLUE BACK AUTO ON OFF ID NO.0000, All CH off TYPE D ON Setting position Setting item PICTURE MODE COLOUR TEMP. FEATURES DIGITAL VNR Super DigiPure Setting position 3.2.3.2 REMOTE CONTROL DIRECT OPERATION Setting item CHANNEL VOLUME ZOOM 3D SOUND PR1 10 PANORAMIC OFF Setting position
(1) PICTURE
MOVIE THEATRE
COLOUR MANAGEMENT COLOUR SYSTEM
PICTURE MANAGEMENT
4:3 AUTO ASPECT (2) SOUND
STEREO / I·II BASS TREBLE
BALANCE A.H.B. BBE
3D SOUND
dupa tor
AUTO ON (5) SET UP Setting item Setting position AUTO PROGRAM EDIT/MANUAL LANGUAGE TV channel automatically set PRESET CH only ENGLISH TV Depends on PR/CH PANORAMIC EXT AUTO DECODER (EXT-2) EXT SETTING S-IN ID OFF COMPONENT AUTO SELECT ON Setting item Setting position BLANK BLANK Stereo sound Centre Centre DUBBING EXT-1 EXT-2 Centre OFF ON (6) DTV Timers Name Start End Setting item Setting position ON 00:00 00:00 Date 01/01/2004 Inactive Mode Configuration Subtitle Audio Language Favourite Mode English off English V.. Receiver Upgrade Menu Lock Disabled
1-14 (No.YA205)
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 alternately melt the solder at each end.
2. How to install Chip parts [Resistors, capacitors, etc.] (1) Apply solder to the pattern as indicated in the figure.
dupa tor
(2) Shift with the tweezers and remove the chip part. [Transistors, diodes, variable resistors, etc.] [Transistors, diodes, variable resistors, etc.] (1) Apply extra solder to each lead.
SOLDER SOLDER
(2) Grasp the chip part with tweezers and place it on the solder. Then heat and melt the solder at both ends of the chip part.
(1) Apply solder to the pattern as indicated in the figure. (2) Grasp the chip part with tweezers and place it on the solder. (3) First solder lead A as indicated in the figure.
(2) As shown in the figure, push the part with tweezers and alternately melt the solder at each lead. Shift and remove the chip part.
A
B
C
(4) Then solder leads B and C.
A
B
NOTE : After removing the part, remove remaining solder from the pattern.
C
(No.YA205)1-15
SECTION 4 ADJUSTMENT
4.1 ADJUSTMENT PREPARATION 4.4 ADJUSTMENT ITEMS (1) There are 2 ways of adjusting this TV : One is with the REMOTE CONTROL UNIT and the other is the conventional method using adjustment parts and components. (2) The adjustment using the REMOTE CONTROL UNIT is made on the basis of the initial setting values. The setting values which adjust the screen to the optimum condition can be different from the initial setting values. (3) Make sure that connection is correctly made AC to AC power source. (4) Turn on the power of the TV and measuring instruments for warning up for at least 30 minutes before starting adjustments. (5) If the receive or input signal is not specified, use the most appropriate signal for adjustment. (6) Never touch the parts (such as variable resistors, transformers and condensers) not shown in the adjustment items of this service adjustment. PRESET SETTING BEFORE ADJUSTMENTS VIDEO CIRCUIT · 625i A-D OFFSET adjustment · 1125i(50Hz) BRIGHTNESS adjustment · 1125i(50Hz) A-D OFFSET adjustment · SUB SCREEN A-D OFFSET adjustment · WHITE BALANCE (HIGH LIGHT) adjustment 4.5 BASIC OPERATION OF SERVICE MODE
4.2
Unless otherwise specified in the adjustment items, preset the following functions with the REMOTE CONTROL UNIT. Setting item Settings position PICTURE MODE COLOUR TEMP. DIGITAL VNR Super DigiPure STANDARD Centre
PICTURE adjustments
MOVIE THEATRE
COLOUR MANAGEMENT SOUND adjustments BBE 3D SOUND A.H.B ZOOM 4.3
PICTURE MANAGEMENT
· Oscilloscope · Signal generator (Pattern generator) [PAL / 625i / 625p / 1125i(50Hz)] · Remote control unit
dupa tor
NOTE: · Before entering the SERVICE MODE, confirm that the setting of VCR/TV/DVD switch is at the "TV" side. If the switches have not been properly set, you cannot enter the SERVICE MODE. · When a number key other than the [1] to [3] key is pressed in the SERVICE MODE SCREEN, the other relevant screen may be displayed. This is not used in the adjustment procedure. Press the [MENU] key to return to the SERVICE MODE SCREEN.
4.5.1 HOW TO ENTER THE SERVICE MODE (1) Press [INFORMATION] key and [MUTING] key on the remote control unit simultaneously to enter the SERVICE MODE SCREEN. (2) In the SERVICE MENU, press the [1] key to display ADJUSTMENT MODE SCREEN.
SERVICE MODE SCREEN
SERVICE MENU 1.ADJUST 2.SELF_CHK 3.I2C STOP
NORMAL
AUTO (LOW)
AUTO
AUTO
ON
ON
Centre OFF OFF
ADJUSTMENT MODE SCREEN
S001 PREPARE 0 PAL50 FULL STD H
OFF
FULL
MEASURING INSTRUMENT AND FIXTURES
4.5.2 HOW TO EXIT THE SERVICE MODE Press the [MENU] key to exit the Service mode.
1-16 (No.YA205)
4.5.3 DESCRIPTION OF STATUS DISPLAY
SETTINGITEM No. SETTING ITEM SETTING VALUE (DATA) COLOUR TEMP.
(5) SETTING ITEM NAME Setting item name are displayed. The setting item numbers to be displayed are listed below. Item No. Setting item Video system setting Audio system setting Panel control system setting Drive system setting Main CPU system setting S001 to S039 T001 to T010 P001 to P010 D001 to D187 Z001 to Z010
S001 PREPARE 0 PAL50 FULL STD H
SIGNAL SYSTEM
ZOOM MODE
PICTURE MODE
(1) SIGNAL SYSTEM The signal displayed on the screen is displayed. PAL50 PAL60 NTSC3 NTSC4 525I 525P 625I 625P 1125I5 1125I6 D625I PCVGA PCXGA : PAL50Hz (Composite / S-video) : PAL60Hz (Composite / S-video) : NTSC3.58 : NTSC4.43 : 525i (Component) : 525p : 625i (Component) : 625p : 1125i 50Hz : 1125i 60Hz : DIGITAL 625i : PC (VGA) : PC (XGA)
(6) SETTING ITEM NO. Setting item numbers are displayed. For the setting item names to be displayed, refer to "INITIAL SETTING VALUES IN THE SERVICE MODE". (7) SETTING VALUE (DATA) The SETTING VALUE is displayed.
dupa tor
4.5.4 CHANGE AND MEMORY OF SETTING VALUE SELECTION OF SETTING ITEM · [FUNCTION / ] key. For scrolling up / down the setting items. S001... T001... P001... D001... Z001... CHANGE OF SETTING VALUE (DATA) · [FUNCTION / ] key. For scrolling up / down the setting values. (2) ZOOM MODE State of the SCREEN SIZE or MULTI PICTURE is displayed. SINGLE SCREEN FULL PANO 1609 1609S 1409 REGU M2 M12 : FULL : PANORAMIC : 16:9 ZOOM : 16:9 ZOOM SUBTITLE : 14:9 ZOOM : REGULAR : 2-pictures multi : 12-pictures multi 4.5.5 SERVICE MODE SELECT KEY LOCATION
MEMORY OF SETTING VALUE (DATA) Changed setting value is memorized by pressing [MUTING] key.
MUTING
NUMBER
VCR/TV/DVD switch
MULTI SCREEN
INFORMATION ZOOM (Red)
3D SOUND (Green) MENU
FUNCTION
/
FUNCTION
/
(3) PICTURE MODE STD BRI SOFT
: STANDARD : BRIGHT : SOFT
(4) COLOUR TEMP. L H : WARM : NORMAL, COOL
(No.YA205)1-17
4.6
INITIAL SETTING VALUES IN THE SERVICE MODE
· Perform fine-tuning based on the "initial values" using the remote control when in the Service mode. · The "initial values" serve only as an indication rough standard and therefore the values with which optimal display can be achieved may be different from the default values. But, don't change the values that are not written in "ADJUSTMENT PROCEDURE". They are fixed values. 4.6.1 VIDEO SYSTEM SETTING Item No. Item name Variable range 0 - 31 0 - 15 0 - 255 0 - 15 0 - 15 0 - 15 0 - 255 0 - 15 0 - 15 Setting value PAL 0 0 36 6 6 0 36 0 0 SECAM 0 0 36 6 6 0 36 0 0 NTSC 0 0 36 6 6 0 36 0 0 4.6.2 AUDIO SYSTEM SETTING (*Fixed values) Item No. Item name Variable range 0 - 255 0 - 255 0 - 255 0 - 255 0 - 255 0-1 0-1 0-1 0 - 255 0 - 255 Setting value PAL 0 0 0 4 0 0 0 0 0 0 SECAM NTSC 0 0 0 4 0 0 0 0 0 0 0 0 0 4 0 0 0 0 0 0
S001 PREPARE S002 NTSC BL S003 NTSC CNT S004 NT CR OF S005 NT CB OF S006 525i BL S007 525i CNT S008 5i CB OF S009 5i CR OF
T001 IN LEVEL T002 LOW SEP T003 HIGH SEP T004 AFC T005 (Not display) T006 ATT V ON T007 ATT U ON T008 ATT C ON T009 (Not display) T010 (Not display)
S010 5i CR GN S011 5i CB GN S012 HD BL
S013 HD CB OF S015 RT CONT
S014 HD CR OF S016 RT CB OF S018 RT CL GA S020 PC CL LB
S017 RT CR OF S019 PC CL MB
S021 PC CL MR S022 PC CL LR
S023 (Not display) S024 (Not display) S025 (Not display) S026 (Not display) S027 (Not display) S028 (Not display) S029 (Not display) S030 R DRIVE S032 B DRIVE S031 G DRIVE
S033 (Not display) S034 (Not display) S035 (Not display) S036 (Not display) S037 (Not display) S038 (Not display) S039 ILA COM
dupa tor
0 - 15 6 6 6 0 - 15 6 6 6 0 - 63 56 56 56 60 7 5 4.6.3 PANEL CONTOROL SYSTEM SETTING (*Fixed values) Item No. Item name Variable range 00 - FF 00 - FF 0 - 255 Setting value 00 PAL 00 00 0 SECAM NTSC 00 00 0 00 0 0 - 63 57 7 57 7 57 0 - 63 60 5 60 5 0 - 15 P001 TM HOR H P002 TM HOR L P003 TM MIN P004 TEMP0 0 - 15 0 - 15 0-7 8 8 8 00 - FF 0 - 255 0 - 255 0 - 255 0 - 255 0 - 255 0 - 255 00 0 0 0 0 0 0 00 0 0 0 0 0 0 00 0 0 0 0 0 0 0 - 15 12 0 0 12 0 0 12 0 0 P005 (Not display) P006 (Not display) P007 (Not display) P008 (Not display) P009 (Not display) P010 (Not display) 0 - 31 0 - 71 0 0 0 0 0 0 0 0 0 0 0 - 31 0 0 0 0 - 255 0 - 255 0 - 255 0 - 255 0 - 255 0 - 255 0 - 255 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4.6.4 DRIVE SYSTEM SETTING (*Fixed values) Item No. Item name Variable range 00 - 3F 00 - 3F 00 - 03 PAL 15 13 15 Setting value 15 SECAM NTSC 15 15 13 15 13 D001 SLV GN 0 - 255 133 133 133 D002 SLVH GN D003 SLH GN D004 SLV Pf 0 - 255 126 0 0 0 0 0 0 0 126 0 0 0 0 0 0 0 126 0 0 0 0 0 0 0 00 - 3F 00 - 01 00 - 03 0 - 255 105 105 105 01 01 01 01 01 0 - 255 0 - 255 0 - 255 0 - 255 0 - 255 0 - 255 0-1 D005 SLH Pf H D006 SLH Pf L 01 01 01 01 D007 SL EGCON D008 SL EGONF 00 - 3F 00 - 01 08 08 01 08 01 01 D009 SL CRGON D010 SL CRGON D011 SL ON OF D012 SV GN D013 SVH GN D014 SH GN D015 SV Pf D016 SV PfH 00 - 3F 00 - 01 00 - 01 00 - 3F 00 - 3F 00 - 3F 00 - 03 00 - 01 06 01 01 18 1A 1C 00 01 06 01 01 18 1A 1C 00 01 06 01 01 18 1A 1C 00 01
1-18 (No.YA205)
Item No.
Item name
Variable range 00 - 03 00 - 3F 00 - 01 00 - 3F 00 - 01 00 - 3F 00 - 01 00 - 3F 00 - 01 00 - 3F 00 - 01 00 - 3F 00 - 01 00 - 01 00 - 3F 00 - 01 00 - 03
Setting value PAL 00 30 01 00 01 1A 01 0A 01 20 01 10 01 01 15 SECAM NTSC 00 30 01 00 01 1A 01 0A 01 20 01 10 01 01 15 00 30 01 00 01 1A 01 0A 01 20 01 10 01 01 15
Item No.
Item name
Variable range 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF
Setting value PAL 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 SECAM NTSC 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
D017 SV PfL D018 SYL CON D019 SYL CONF D020 SYH CON D021 SYH CONF D022 SC CON D023 SC CNONF D024 SPM BLC D025 SPM BLCO D026 SLIM D027 SLIMONF D028 SCRG D029 SRGONF D030 S ONF D031 pb GN D033 pb PfL D032 pb PfH
D066 (Not display) D067 (Not display) D068 (Not display) D069 (Not display) D070 (Not display) D071 (Not display) D072 (Not display) D073 (Not display) D074 (Not display) D075 (Not display) D076 (Not display) D077 (Not display) D078 (Not display) D079 (Not display) D080 (Not display) D081 (Not display) D082 (Not display) D083 (Not display) D084 (Not display) D085 (Not display) D086 (Not display) D087 (Not display) D088 (Not display) D089 (Not display) D090 (Not display) D091 (Not display) D092 (Not display) D093 (Not display) D094 (Not display) D095 (Not display) D096 (Not display) D097 (Not display) D098 (Not display) D099 (Not display) D100 (Not display) D101 (Not display) D102 (Not display) D103 (Not display) D104 (Not display) D105 (Not display) D106 (Not display) D107 (Not display) D108 (Not display) D109 (Not display) D110 (Not display) D111 (Not display) D112 (Not display) D113 (Not display) D114 (Not display)
dupa tor
01 00 01 01 00 01 00 D034 pb CRG D036 pb ONF D037 pr GN D039 pr PfL D038 pr PfH 00 - 3F 00 - 01 00 - 01 04 04 04 D035 pb CRGON 01 01 01 01 01 00 - 3F 00 - 01 00 - 03 15 15 15 01 00 01 00 01 00 D040 pr CRG D042 pr ONF 00 - 3F 00 - 01 00 - 01 05 05 05 D041 pr CRGON D043 ENH ONF 01 01 01 01 01 01 00 - 01 01 01 01 D044 (Not display) D045 (Not display) D046 (Not display) D047 (Not display) D048 (Not display) D049 (Not display) D050 (Not display) D051 (Not display) D052 (Not display) D053 (Not display) D054 (Not display) D055 (Not display) D056 (Not display) D057 (Not display) D058 (Not display) D059 (Not display) D060 (Not display) D061 (Not display) D062 (Not display) D063 (Not display) D064 (Not display) D065 (Not display) 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 (No.YA205)1-19
Item No.
Item name
Variable range 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF
Setting value PAL 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 SECAM NTSC 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Item No.
Item name
Variable range 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF
Setting value PAL 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 SECAM NTSC 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
D115 (Not display) D116 (Not display) D117 (Not display) D118 (Not display) D119 (Not display) D120 (Not display) D121 (Not display) D122 (Not display) D123 (Not display) D124 (Not display) D125 (Not display) D126 (Not display) D127 (Not display) D128 (Not display) D129 (Not display) D130 (Not display) D131 (Not display) D132 (Not display) D133 (Not display) D134 (Not display) D135 (Not display) D136 (Not display) D137 (Not display) D138 (Not display) D139 (Not display) D140 (Not display) D141 (Not display) D142 (Not display) D143 (Not display) D144 (Not display) D145 (Not display) D146 (Not display) D147 (Not display) D148 (Not display) D149 (Not display) D150 (Not display) D151 (Not display) D152 (Not display) D153 (Not display) D154 (Not display) D155 (Not display) D156 (Not display) D157 (Not display) D158 (Not display) D159 (Not display) D160 (Not display) D161 (Not display) D162 (Not display) D163 (Not display) 1-20 (No.YA205)
D164 (Not display) D165 (Not display) D166 (Not display) D167 (Not display) D168 (Not display) D169 (Not display) D170 (Not display) D171 (Not display) D172 (Not display) D173 (Not display) D174 (Not display) D175 (Not display) D176 (Not display) D177 (Not display) D178 (Not display) D179 (Not display) D180 (Not display) D181 (Not display) D182 (Not display) D183 (Not display) D184 (Not display) D185 (Not display) D186 (Not display) D187 (Not display)
dupa tor
4.6.5 MAIN CPU SYETEM SETTING (*Fixed values) Item name Variable range 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF 00 - FF PAL 00 00 00 00 00 00 00 00 00 00 Item No. Setting value 00 00 00 00 00 00 00 00 00 00 SECAM NTSC 00 00 00 00 00 00 00 00 00 00 Z001 (Not display) Z002 (Not display) Z003 (Not display) Z004 (Not display) Z005 (Not display) Z006 (Not display) Z007 (Not display) Z008 (Not display) Z009 (Not display) Z010 (Not display)
4.7
ADJUSTMENT PROCEDURE Measuring Test point instrument Remote control unit Signal generator
4.7.1 VIDEO CIRCUIT Item 625i A-D OFFSET Adjustment part [1.ADJUST] S001: PREPARE (Adjustment setting mode change) S008: 5i CB OF(625i cb offset) S009: 5i CR OF(625i cr offset) S030: R DRIVE(Red drive) S031: G DRIVE(Green drive) S032: B DRIVE(Blue drive) (1) (2) (3) (4) (5) (6) (7) Description Receive a 625i component ramp pattern signal. Set "PICTURE MODE" to STANDARD. Set "ZOOM" to FULL. Set "COLOUR TEMP." to NORMAL. Select "1.ADJUST" from the SERVICE MODE. Set < S030 > (R DRIVE), < S031> (G DRIVE) and < S032 > (B DRIVE) to "133". Set < S001 >(adjustment setting mode change) to set "8" and it change to the 625i A-D offset adjustment setting mode. Adjust < S008 > (625i Cb offset) and < S009 > (625i Cr offset) to lose the gap (red line, green line and blue line) which appears at both ends of a white part at the centre of the screen. Set < S001 > to set "0" and it change to the normal mode. Press the [MUTING] key to memoirze the set value. Receive a 1125i (50Hz) gray scale pattern signal. Set "PICTURE MODE" to STANDARD. Set "ZOOM" to FULL. Set "COLOUR TEMP." to NORMAL. Select "1.ADJUST" from the SERVICE MODE. Set < S030 > (R DRIVE), < S031> (G DRIVE) and < S032 > (B DRIVE) to "133". Set < S001 > (adjustment setting mode change) to set the values "12" and it change to the 1125i black level adjustment setting mode. Adjust < S012 > (1125i brightness) to set the 0% black part in the upper half of the screen to be brightest. Set < S001 > to set "0" and it change to the normal mode. Press the [MUTING] key to memoirze the set value.
(8)
dupa tor
Disappears the color at both ends.
(10) 1125i (50Hz) BRIGHTNESS Remote control unit Signal generator [1.ADJUST] S001: PREPARE (Adjustment setting mode change) S012: HD BL(1125i brightness) S030: R DRIVE(Red drive) S031: G DRIVE(Green drive) S032: B DRIVE(Blue drive) (1) (2) (3) (4) (5) (6) (7)
Set the 0% black part to be brightest.
(9)
(8)
(9)
(10)
1125i (50Hz) A-D OFFSET
Remote control unit Signal generator
[1.ADJUST] S001: PREPARE (Adjustment setting mode change)
Minimize the red and blue noises in the upper half of the screen.
(1) Receive a 1125i (50Hz) 30% all white pattern signal. (2) Set "PICTURE MODE" to STANDARD. (3) Set "ZOOM" to FULL. S013: HD CB OF(1125i cb offset) (4) Set "COLOUR TEMP." to NORMAL. S014: HD CR OF(1125i cr offset) (5) Select "1.ADJUST" from the SERVICE MODE. (6) Set < S030 > (R DRIVE), < S031> (G DRIVE) S030: R DRIVE(Red drive) and < S032 > (B DRIVE) to "133". S031: G DRIVE(Green drive) (7) Set < S001 > (adjustment setting mode change) S032: B DRIVE(Blue drive) to set "13" and it change to the 1125i A-D offset adjustment setting mode. (8) Adjust < S013 > (1125i Cb offset) to minimize the blue noise in the upper half of the screen. (9) Set < S014 > (1125i Cr offset) to minimize the blue noise in the upper half of the screen. (10) Set < S001 > to set "0" and it change to the normal mode. (11) Press the [MUTING] key to memoirze the set value.
(No.YA205)1-21
Item SUB SCREEN A-D OFFSET
Measuring Test point instrument Remote control unit Signal generator
Adjustment part [1.ADJUST] S001: PREPARE (Adjustment setting mode change) S016: RT CB OF (Sub screen cb offset) S017: RT CR OF (Sub screen cr offset) S030: R DRIVE(Red drive) S031: G DRIVE(Green drive) S032: B DRIVE(Blue drive) (1) (2) (3) (4) (5)
Description Set "PICTURE MODE" to STANDARD. Set "ZOOM" to FULL. Set "COLOUR TEMP." to NORMAL. Set "MULTI SCREEN" to 2 pictures. Receive a PAL 30% all white pattern signal on the Right screen. At the same time, set the Left screen in VIDEO-1 mode (No signal). Select "1.ADJUST" from the SERVICE MODE. Set < S030 > (R DRIVE), < S031> (G DRIVE) and < S032 > (B DRIVE) to "133". Set < S001 > (adjustment setting mode change) to set "17" and it change to the sub screen A-D offset adjustment setting mode. Adjust < S016 > (Sub screen cb offset) to minimize the blue noise in the upper half of the screen. If you select an adjustment item < S016 >, then the screen automatically turn to twin pictures mode. Adjust < S017 > (Sub screen cr offset) to minimize the red noise in the upper half of the screen. Readjust < S016 > and < S017 > to set the upper half of the screen to be the blackest. (See Fig.9) Set < S001 > to set "0" and it change to the normal mode. Press the [MUTING] key to memoirze the set value. Receive a PAL 75% all white signal. Set "PICTURE MODE" to STANDARD. Set "ZOOM" to FULL. Set "COLOUR TEMP." to NORMAL. Select "1.ADJUST" from the SERVICE MODE. Adjust to keep one of < S030 > (Red drive), < S031 > (Green drive) or < S032 > (Blue drive) unchanged, then lower the other two so that the all-white screen is equally white throughout.
Set the 0% block part to be brightest.
(6) (7) (8)
(9)
WHITE BALANCE (HIGHLIGHT)
dupa tor
VIDEO-1 TV(RF) <30% all white>
(10)
(11)
(12)
(13)
Remote control unit Signal generator
[1.ADJUST] S030: R DRIVE (Red drive) S031: G DRIVE (Green drive) S032: B DRIVE (Blue drive)
(1) (2) (3) (4) (5) (6)
NOTE: Set one or more of < S030 >, < S031 >, and < S032 > to "85". (7) Check that white balance is properly tracked from low light to high light. If the white balance tracking is deviated, adjust to correct it. (8) Press the [MUTING] key to memoirze the set value.
1-22 (No.YA205)
SECTION 5 TROUBLESHOOTING
5.1 SELF CHECK FEATURE 5.1.1 OUTLINE This unit comes with the "Self check" feature, which checks the operational state of the circuit and displays/saves it during failure.Diagnosis is performed when power is turned on, and information input to the main microcomputer is monitored at all time.Diagnosis is displayed in 2 ways via screen display and LED flashes. Failure detection is based on input state of I2C bus and the various control lines connected to the main microcomputer. 5.1.2 HOW TO ENTER THE SELF CHECK MODE Before entering the SERVICE MODE, confirm that the setting of VCR/TV/ DVD switch is at the "TV" side. If the switches have not been properly set, you cannot enter the SERVICE MODE. (1) Press the [INFORMATION] key and [MUTING] key simultaneously, then enter the SERVICE MODE. (2) Press the [2] key SELF CHECK MODE. (3) Press the [RED (ZOOM)] key to enter Page 2 of the SELF CHECK MODE. *Use the [GREEN (3D SOUND)] key to toggle between Page 1 and Page 2. NOTE: When a number key other than the [1] to [3] key is pressed in the SERVICE MODE screen, the other relevant screen may be displayed. This is not used in the adjustment procedure. Press the [MENU] key to return to the MAIN MENU SCREEN. 5.1.5 POINTS TO NOTE WHEN USING THE SELF CHECK FEATURE In addition to circuit failures (abnormal operation), the following cases may also be iagnosed as "Abnormal" and displayed and counted as "NG". (1) Temporary defective transmissions across circuits due to pulse interruptions (2) Misalignment in the on/off timing of power for I2C bus (VCC) when turning on/off the main power. Diagnosis may be impeded if a large number of items are displayed as "NG". As such, start Self check check only after 3 seconds in the case of receivers and 5 seconds in the case of panels upon turning on the power. If recurrences are expected, ensure to clear (reset) the failure history and record the new diagnosis reults.
dupa tor
SERVICE MODE SCREEN
SERVICE MENU 1.ADJUST 2.SELF_CHK 3.I2C STOP
5.1.3 HOW TO EXIT THE SELF CHECK MODE To Save Failure History: Turn off the power by unplugging the AC power cord plug when in the Self check display mode. To Clear (Reset) Failure History: Turn off the power by pressing the [POWER] key on the remote control unit when in the Self check display mode. 5.1.4 FAILURE HISTORY Failure history can be counted up to 9 times for each item. When the number exceeds 9, display will remain as 9. Failure history will be stored in the memory unless it has been deleted.
SELF CHECK MODE SCREEN (Page 1)
LOB SYNC TIM MSM MEM YC TUN IP DVI OK FAN OK M:OK S:OK HD:NG OK OK DIGI 0000 OK AVSW OK OK AIO OK OK GCR NG 1 OK RGB OK 8 OK HDMI OK
Item
NOTE: Only SYNC (with/without sync signals) will be neither counted nor stored.
CHECK Normality=OK Abnormality=NG
SELF CHECK MODE SCREEN (Page 2)
FAN TMP ATP PNL TMP OK OK OK OK OK ALM ASH MEM AIO OK OK OK OK
Item
CHECK Normality=OK Abnormality=NG
* As "SYNC" is not counted, the number of failures not displayed.
Fig.1 (No.YA205)1-23
5.1.6 DETAILS Self check is performed for the following items: < Page 1 of screen > Detection item Low bias line short protection Display LOB Detection content Confirmation of operation of the low bais (2.5V / 3.3V / 5V / 9V) protection circuit. Q9822 [REGULATOR PWB] Confirmation of the temperature of audio circuit. TH6661 [ANALOG SIGNAL PWB] Confirmation of presence of video sync signal. M : Main sync signal S : Sub sync signal HD : Component sync signal IC201 [ANALOG SIGNAL PWB] Diagnosis signal (line) LB_PRO Detection timing Detection starts 3 seconds after the power is turned on. If error continues between 400ms the power is turned off. Detection starts 3 seconds after the power is turned on. If the temperture of 90°C is detected for 3 seconds the power is turned off. Confirmation of presence of sync signal in video signal.
Abnormal rise of temperature in audio circuit Presence of sync signal
FAN
SDA
SYNC
SDA
AC power input Main CPU communication Digital tuner
Main memory
AV select switch
3 dimensions YC separator RF tuner
Multi sound process
Ghost reduction DIST process
RGB process
DVI (Digital communication) Digital input
dupa tor
TIM Not used. Not used. ----MSM ----DIGI Confirmation of reply of ACK signal which uses I2C communication. [DIGITAL TUNER UNIT] SDA If it checks whenever I2C communication is performed and no reply of ACK signal an error will be counted. MEM Confirmation of reply of ACK signal which uses I2C communication. IC7602 [DIGITAL SIGNAL PWB] SDA Same as above. AVSW Same as above. IC301, IC501 [ANALOG SIGNAL PWB] YC Not used. Not used. SDA --Same as above. --AIO ----TUN Confirmation of reply of ACK signal which uses I2C communication. TU3001 [RECEIVER PWB] Not used. SDA If it checks whenever I2C communication is performed and no reply of ACK signal an error will be counted. --If it checks whenever I2C communication is performed and no reply of ACK signal an error will be counted. If it checks whenever I2C communication is performed and no reply of ACK signal an error will be counted. ----GCR IP --Confirmation of reply of ACK signal which uses I2C communication. IC3001 [DIGITAL SIGNAL PWB] SDA RGB Confirmation of reply of ACK signal which uses I2C communication. IC3001 [DIGITAL SIGNAL PWB] Not used. Not used. SDA DVI --HDMI ---
1-24 (No.YA205)
< Page 2 of screen > Detection item Fan lock Abnormal of operation of PANEL Abnormal rise of temperature in PANEL Abnormal rise of temperature in audio circuit Short circuit detection of audio circuit Panel communication Sub memory Temp. sensor Audio control Display FAN ALM TMP ATP Not used. Not used. Not used. Not used. Detection content Diagnosis signal (line) --------Detection timing ---------
ASH PNL MEM TMP AIO
Not used. Not used. Not used. Not used. Confirmation of reply of ACK signal which uses I2C communication. IC6521 [ANALOG SIGNAL PWB]
--------SDA
--------If it checks whenever I2C communication is performed and no reply of ACK signal an error will be counted.
dupa tor
5.1.7 METHOD OF DISPLAY WHEN A RASTER IS NOT OUTPUT In the state where a raster is not output by breakdown of the set, an error is displayed by blink of the POWER LED. Type of error POWER LED flash cycle Low bias line short protection Green turnig on and off at 1 second intervals. Abnormal rise of temperature in audio circuit Green turnig on and off at 0.1 second intervals. < Explanation of operation > If error is detected, the power is turned off. Shortly after a power is turned off, POWER LED will be blinked. Power cannot be turned on until the power cord takes out and inserts, after a power is turned off.
(No.YA205)1-25
dupa tor
Victor Company of Japan, Limited AV & MULTIMEDIA COMPANY VIDEO DISPLAY CATEGORY 12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, 221-8528, Japan
(No.YA205)
Printed in Japan VPT
du pat or
LT-32D50BJ LT-26D50BJ LT-32D50SJ LT-26D50SJ
DynaPix LCD IDTV with D.I.S.T.
Trade Mark of the DVB Digital Video Broadcasting Project (1991 to 1996) Number: 3249
INSTRUCTIONS
Warning
2
du pat or
How to replace the fuse Open the fuse compartment with a blade screwdriver, and replace the fuse.
DO NOT cut off the mains plug from this equipment. If the plug fitted is not suitable for the power points in your home or the cable is too short to reach a power point, then obtain an appropriate safety approved extension lead or adaptor or consult your dealer. If nonetheless the mains plug is cut off, remove the fuse and dispose of the plug immediately, to avoid a possible shock hazard by inadvertent connection to the mains supply. If a new mains plug has to be fitted, then follow the instruction given below: Important Do not make any connection to the larger terminal which is marked with the letter E or by the safety earth symbol or coloured green or green-and-yellow. The wires in the mains lead on this product are coloured in accordance with the following code: Blue: Neutral Brown: Live
As these colours may not correspond with the coloured marking identifying the terminals in your plug proceed as follows: The wire which is coloured blue must be connected to the terminal which is marked with the letter N or coloured black. The wire which is coloured brown must be connected to the terminal which is marked with the letter L or coloured red. When replacing the fuse, use only a correctly rated approved type and always re-fit the fuse cover.
If in doubt -- consult a competent electrician.
Fuse
Guidelines for safe operation
This equipment has been designed and manufactured to comply with international safety standards. However, as with any electrical appliance, care must be taken to ensure optimal results and operational safety. · Before attempting to use this equipment, read the operating instructions thoroughly. · Ensure that all electrical connections (including the mains plug, extension leads, etc.) have been made in accordance with the manufacturer's instructions. · If ever in doubt about the installation, operation or safety of this equipment, consult your dealer. · Handle all glass panels or covers with care. · Never operate this equipment if it appears damaged or operates abnormally. Turn the power off, disconnect the main power plug and consult your dealer. · Never remove any affixed panels or covers. Doing so may result in electrical shock. · Never leave this equipment operating unattended unless otherwise specifically stated that it is designed to do so or in standby mode. Only use the designated power switch to turn off the power and ensure that all potential users are instructed how to do so. Make special arrangements for infirm or handicapped persons. · Never watch TV while operating a motor vehicle. It is illegal to watch TV while driving. · Never listen to headphones at high volume. Doing so may damage your hearing. · Never obstruct the ventilation of this equipment. Doing so may cause overheating and result in a malfunction or damage. · Never use makeshift stands or attempt to affix legs with wood screws. When using a manufacturer's approved stand or legs, use only the fixtures provided and follow the installation instructions. · Never allow this equipment to be exposed to rain or moisture. · Never allow anyone, especially children, to insert anything into an opening in the case. Doing so may result in a fatal electrical shock. · Never guess or take chances with electrical equipment of any kind. It is better to be safe than sorry.
Thank you for buying this JVC LCD flat television. To make sure you understand how to use your new TV, please read this manual thoroughly before you begin. ("LCD" stands for Liquid Crystal Display.)
WARNING: TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. WARNING: WHEN PUTTING THE TV DOWN, DO SO SLOWLY AND CAREFULLY ONTO A FLAT SURFACE. WARNING
· Fingers may be trapped under the TV causing injuries. Hold the TV at the bottom in the middle, and do not allow it to tilt up or down.
WARNING
· The TV may fall causing injuries. Hold the bottom of the stand with your hand and tilt the TV up and down. · Do not allow children to hang from the TV, place their elbows on the TV or lean against the TV. Doing so may cause the TV to fall over and lead to injuries.
CAUTION
· The TV screen may be damaged if the TV is carried as shown in the diagram below. The TV should always be carried by two people.
du pat or
3
Thank you for buying this JVC colour television. To make sure you understand how to use your new TV, please read this manual thoroughly before you begin.
WARNING: TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. CAUTION:
· Operate only from the power source specified (AC 110 240 V, 50/60 Hz) on the unit. · Avoid damaging the AC plug and power cord. · When you are not using this unit for a long period of time, it is recommended that you disconnect the power cord from the main outlet.
Pixel defects
LCDs use collections of fine points ("pixels") to display images. While there is no problem with more than 99.99% of these pixels, please understand that a very small number of pixels may not light, or may light all the time.
Distance recommendations
Avoid improper installation and never position the unit where good ventilation is impossible. When installing this TV, distance recommendations must be maintained between the set and the wall, as well as inside a tightly enclosed area or piece of furniture. Keep to the minimum distance guidelines shown for safe operation.
Failure to heed the following precautions may result in damage to the TV or remote control.
DO NOT block the TV's ventilation openings or holes. (If the ventilation openings or holes are blocked by a newspaper or cloth, etc., the heat may not be able to get out.) DO NOT place anything on top of the TV. (such as cosmetics or medicines, flower vases, potted plants, cups, etc.) DO NOT allow objects or liquid into the cabinet openings. (If water or liquid is allowed to enter this equipment, fire or electric shock may be caused.) DO NOT place any naked flame sources, such as lighted candles, on the TV. The surface of the TV screen is easily damaged. Be very careful with it when handling the TV. Should the TV screen become soiled, wipe it with a soft dry cloth. Never rub it forcefully. Never use any cleaner or detergent on