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LT-Z32SX4B/S, LT-Z32SX4S/S
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SERVICE MANUAL
WIDE LCD PANEL TELEVISION
1 2005 YA209
LT-Z32SX4B, LT-Z32SX4B/A, LT-Z32SX4B/S, LT-Z32SX4S/S
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1 2 3 4 5
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23
TABLE OF CONTENTS
COPYRIGHT © 2005 Victor Company of Japan, Limited
No.YA209 2005/1
SPECIFICATION
Items Dimensions ( W I H I D ) Mass Power Input Power Consumption TV RF System Colour System Stereo System Teletext System Receiving Frequency VHF Low VHF High UHF CATV Contents 83.4cm I 63.2 cm I 30.0 cm [Included stand] 83.4cm I 56.8 cm I 10.8 cm [TV only] 20.6kg [Included stand] 17.3kg [TV only] AC110V - AC240 V, 50 Hz / 60 Hz 161W (Standby: 2.8W) B, G, I, D, K, K1, M PAL / SECAM / NTSC 3.58 / NTSC 4.43 A2 (B/G, D/K), NICAM (B/G, I, D/K) FLOF (Fastext), TOP, WST (World Standard System) 46.25MHz - 168.25MHz 175.25MHz - 463.25MHz 471.25MHz - 863.25MHz Mid (X - Z+2, S1 - S10) / Super (S11 - S20) / Hyper (S21 - S41) bands
Intermediate Frequency
VIF 38.0MHz (B, G, I, D, K, L) SIF 32.26MHz (5.74MHz: B), 32.15MHz (5.85MHz: G), 31.45MHz (6.55MHz: I) 31.75MHz (6.25MHz: D), 32.15MHz (5.85MHz: K) PAL 4.43MHz SECAM 4.40625MHz / 4.25MHz NTSC 3.58MHz / 4.43MHz 32V-inch wide aspect (16:9) Diagonal : 80cm (H:69.7cm I V : 39.2cm) Horizontal : 1366 dots I Vertical : 768 dots (W-XGA) 10W + 10W 6.6cm, round type I 2 (Oblique corn) 75 unbalanced, coaxial Component Video Component connector (2-row 14-pin I 1) (Input-1) [Input-1/3] RCA pin jack I 3 (Input-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 Y : 1V (p-p), Positive (Negative sync provided), 75 625i / 525i Pb/Pr : 0.7V(p-p), 75 S-Video Mini-DIN 4 pin connector I 2 [Input-1/2] 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 I 3 Audio 500mV (rms), High impedance, RCA pin jack I 6 S-Video Mini-DIN 4 pin connector I 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 I 1 Audio 500mV (rms), Low impedance, RCA pin jack I 2 D-sub 15pin I 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 I 480 pixels (Horizontal : 31.5kHz / Vertical : 60Hz) XGA : 1024 pixels I 768 pixels (Horizontal : 48.4kHz / Vertical : 60Hz) 500mV (rms), Low impedance, RCA pin jack I 2 3.5mm stereo mini jack I 1 RM-C1830H (AA/R6 dry cell battery I 2)
Colour Sub Carrier LCD panel Screen Size Display Pixels Audio Power Output Speaker Aerial terminal (VHF/UHF) Video / Audio Input-1/2/3
Video / Audio Output
PC (RGB) Input
Audio Output Headphone Remote Control Unit
Design & specifications are subject to change without notice.
1-2 (No.YA209)
SECTION 1 PRECAUTION
1.1 SAFETY PRECAUTIONS (6) Isolation Check (Safety for Electrical Shock Hazard) After re-assembling the product, always perform an isolation check on the exposed metal parts of the cabinet (antenna terminals, video/audio input and output terminals, Control knobs, metal cabinet, screw heads, earphone jack, control shafts, etc.) to be sure the product is safe to operate without danger of electrical shock. a) Dielectric Strength Test The isolation between the AC primary circuit and all metal parts exposed to the user, particularly any exposed metal part having a return path to the chassis should withstand a voltage of 3000V AC (r.m.s.) for a period of one second. (. . . . Withstand a voltage of 1100V AC (r.m.s.) to an appliance rated up to 120V, and 3000V AC (r.m.s.) to an appliance rated 200V or more, for a period of one second.) This method of test requires a test equipment not generally found in the service trade. b) Leakage Current Check Plug the AC line cord directly into the AC outlet (do not use a line isolation transformer during this check.). Using a "Leakage Current Tester", measure the leakage current from each exposed metal part of the cabinet, particularly any exposed metal part having a return path to the chassis, to a known good earth ground (water pipe, etc.). Any leakage current must not exceed 0.5mA AC (r.m.s.). However, in tropical area, this must not exceed 0.2mA AC (r.m.s.). Alternate Check Method Plug the AC line cord directly into the AC outlet (do not use a line isolation transformer during this check.). Use an AC voltmeter having 1000 per volt or more sensitivity in the following manner. Connect a 1500 10W resistor paralleled by a 0.15kF AC-type capacitor between an exposed metal part and a known good earth ground (water pipe, etc.). Measure the AC voltage across the resistor with the AC voltmeter. Move the resistor connection to each exposed metal part, particularly any exposed metal part having a return path to the chassis, and measure the AC voltage across the resistor. Now, reverse the plug in the AC outlet and repeat each measurement. Any voltage measured must not exceed 0.75V AC (r.m.s.). This corresponds to 0.5mA AC (r.m.s.). However, in tropical area, this must not exceed 0.3V AC (r.m.s.). This corresponds to 0.2mA AC (r.m.s.).
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(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. Service should be performed by qualified personnel only. (2) Alterations of the design or circuitry of the products 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 products have special safety-related characteristics. These characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily 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 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) Don't short between the LIVE side ground and ISOLATED (NEUTRAL) side ground or EARTH side ground when repairing. Some model's power circuit is partly different in the GND. The difference of the GND is shown by the LIVE : ( ) side GND, the ISOLATED (NEUTRAL) : ( ) side GND and EARTH : ( ) side GND. Don't short between the LIVE side GND and ISOLATED (NEUTRAL) side GND or EARTH side GND and never measure the LIVE side GND and ISOLATED (NEUTRAL) side GND or EARTH side GND at the same time with a measuring apparatus (oscilloscope etc.). If above note will not be kept, a fuse or any parts will be broken. (5) When service is required, observe the original lead dress. Extra precaution should be given to assure correct lead dress in the high voltage circuit area. Where a short circuit has occurred, those components that indicate evidence of overheating should be replaced. Always use the manufacturer's replacement components.
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(No.YA209)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.
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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. Ê»²¬·´¿¬·±² ¸±´»
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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.
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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.YA209)
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).
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.YA209)1-5
SECTION 2 SPECIFIC SERVICE INSTRUCTIONS
2.1 FEATURES 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. 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. ZOOM This function can change the screen size according to the picture aspect ratio. 2.2 MAIN DIFFERENCE LIST Item FRONT PANEL COLOUR POWER CORD SHIELD COVER (DIGITAL SIGNAL PWB) TOP SHIELD CASE (DIGITAL SIGNAL PWB) SIDE SHIELD CASE (DIGITAL SIGNAL PWB) DIGITAL SIGNAL P.W.B LT-Z32SX4B BLACK Round pin (2-pin) type Not used Not used Not used LCA10428-67B(SFL-0D305A) Not used Not used LCA10428-69B(SFL-0D307A) Australia pin (2-pin) type UK pin (3-pin) type Used Used Used LCA10428-68B(SFL-0D306A) LT-Z32SX4B/A LT-Z32SX4B/S LT-Z32SX4S/S SILVER
1-6 (No.YA209)
2.3
TECHNICAL INFORMATION
2.3.1 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. 2.3.1.1 SPECIFICATIONS The following table shows the specifications of this unit. Item Maximum dimensions ( W I H I D ) Weight Effective screen size Aspect ratio Drive device / system Resolution Pixel pitch (pixel size) Displayed colour Brightness Contrast ratio Response time View angle Surface polarizer Colour filter Backlight Power supply voltage in LCD Power supply voltage in inverter Panel interface system 8.0kg Diagonal: 800.4mm (H:697.7mm I V : 392.3mm) 16 : 9 a-Si-TFT, active matrix system Horizontally 1366 I Vertically 768 I RGB Horizontally:0.51075mm, Vertically:0.51075mm 16777216 colours 500cd/m2 1000: 1 8ms Horizontally: 170p, Vertically: 170p Anti-Glare type, Low reflective coat Vertical stripe Dyrect-type Cold cathode fluorescent lamp I 16 6.5V 18V LVDS (Low Voltage Differential Signaling) 256 colours for R, G, and B 3147264 dots in total 32V type Specifications 761mm I 451mm I 51mm Remarks
2.3.1.2 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.YA209)1-7
2.3.2 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
1-8 (No.YA209)
2.3.3 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] Not used : LCD back light lighting Not used : 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 Not used : Digital tuner power / reset control Reset for IC1001(3D YC SEP / COLOUR DEMODULAT) [Reset = H] Not used: Reset for Digital tuner power / reset control Not used: Reset for Sound delay (Lip sync) Not used Not used: Picture muting request from digital tuner Not used: Video cutoff for digital tuner Not used: System cable connection monitor for PDP 3.3V power supply Not used : Digital tuner power control Sync select for DIGITAL-IN [Cotrolled with 99-pin] Not used : 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 Not used : Data transmission for digital tuner communication Not used : 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) Not used : 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)
(No.YA209)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. 3.1.2 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 screws [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 SIGNAL PWB (Fig.1) Remove the STAND. Remove the REAR COVER. Remove the FAN BRACKET. (1) Remove the 6 screws [J] then remove the TERMINAL BASE. (2) Remove the 6 screws [K] and the 2 hex screws [W] then remove the ANALOG SIGNAL 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. 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. 3.1.7 REMOVING THE 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. 3.1.8 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] and the 4 screws [e]. (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.YA209)
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(No.YA209)1-11
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Fig.2 1-12 (No.YA209)
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. 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. 3.2.2 SERVICE MODE SETTING SERVICE MODE SCREEN SETTING ITEM Setting items Video system setting
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Settings Adjust Fixed Fixed Fixed Fixed
Item No. S001 to S039 T001 to T010 P001 to P010 D001 to D187 Z001 to Z010
Audio system setting Panel control system setting Drive system setting Main CPU system setting
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Fig.1
(No.YA209)1-13
3.2.3 SETTINGS OF FACTORY SHIPMENT 3.2.3.1 POWER CHANNEL VOLUME TV/VIDEO STANDBY MODE 3.2.3.3 BUTTON OPERATION Setting item Off PR1 10 TV OFF Setting position 3.2.3.2 REMOTE CONTROL DIRECT OPERATION Setting item CHANNEL VOLUME ZOOM CINEMA SUB PICTURE PR1 10 PANORAMIC OFF VIDEO-1 Setting position
REMOTE CONTROL MENU OPERATION (4) FEATURES Setting position BRIGHT COOL AUTO (LOW) AUTO AUTO ON ON Setting item SLEEP TIMER APPEARANCE CHILD LOCK BLUE BACK AUTO SHUTOFF FAVORITE SETTING (5) SET UP Setting item AUTO PROGRAM EDIT/MANUAL LANGUAGE VIDEO-1 SETTING Setting position Stereo sound Centre Centre Centre OFF ON ON VIDEO-3 SETTING AI VOLUME TELETEXT LANGUAGE Setting position TV channel automatically set PRESET CH only ENGLISH COMPONENT COMPONENT ON GROUP-1 OFF TYPE D ID NO.0000, All CH off ON OFF RESET Setting position Setting item
(1) PICTURE PICTURE MODE WHITE BALANCE FEATURES DIGITAL VNR Super DigiPure PULL DOWN COLOUR MANAGEMENT PICTURE MANAGEMENT COLOUR SYSTEM 4:3 AUTO ASPECT (2) SOUND Setting item STEREO / III BASS TREBLE BALANCE CINEMA SURROUND A.H.B. BBE
MAIN Depends on PR/CH SUB AUTO PANORAMIC
1-14 (No.YA209)
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.
(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. (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.
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(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.
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(4) Then solder leads B and C.
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NOTE : After removing the part, remove remaining solder from the pattern.
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(No.YA209)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. 4.2 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
4.5.1 HOW TO ENTER THE SERVICE MODE (1) Press [DISPLAY] 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. NOTE: Before entering the SERVICE MODE, confirm that the setting of PIP/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.
Unless otherwise specified in the adjustment items, preset the following functions with the REMOTE CONTROL UNIT. Setting item PICTURE MODE PICTURE adjustments WHITE BALANCE DIGITAL VNR Super DigiPure PULL DOWN COLOUR MANAGEMENT PICTURE MANAGEMENT SOUND adjustments BBE CINEMA SORROUND A.H.B ZOOM 4.3 Settings position STANDARD Centre MID MIN AUTO AUTO ON ON Centre OFF OFF OFF FULL
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MEASURING INSTRUMENT AND FIXTURES
Oscilloscope Signal generator (Pattern generator) [PAL / 625i / 625p / 1125i(50Hz)] Remote control unit 4.5.2 HOW TO EXIT THE SERVICE MODE Press the [MENU] key to exit the Service mode.
1-16 (No.YA209)
4.5.3 DESCRIPTION OF STATUS DISPLAY
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(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 - S039 T001 - T010 P001 - P010 D001 - D187 Z001 - Z010
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(1) SIGNAL SYSTEM The signal displayed on the screen is displayed. PAL50 PAL60 SECAM NTSC3 NTSC4 525I 525P 625I 625P 1125I5 1125I6 PCVGA PCXGA : PAL50Hz (Composite / S-video) : PAL60Hz (Composite / S-video) : SECAM : NTSC3.58 : NTSC4.43 : 525i (Component) : 525p : 625i (Component) : 625p : 1125i 50Hz : 1125i 60Hz : 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. 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. MEMORY OF SETTING VALUE (DATA) Changed setting value is memorized by pressing [MUTING] key. 4.5.5 SERVICE MODE SELECT KEY LOCATION ÓËÌ×ÒÙ ÒËÓÞÛÎ Ð×ÐñÌÊñÜÊÜ -©·¬½¸
(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
MULTI SCREEN
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(3) PICTURE MODE STD BRI SOFT : STANDARD : BRIGHT : SOFT
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(4) WHITE BALANCE L H : WARM : MID, COOL
(No.YA209)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 0 - 15 0 - 15 0 - 63 0 - 63 0 - 63 0 - 15 0 - 15 0 - 15 0 - 15 0-7 0 - 31 0 - 71 0 - 31 0 - 255 0 - 255 0 - 255 0 - 255 0 - 255 0 - 255 0 - 255 0 - 255 0 - 255 0 - 255 0 - 255 0 - 255 0 - 255 0 - 255 0 - 255 0 - 255 0-1 Setting value PAL 0 0 36 6 6 0 36 0 0 6 6 55 56 58 7 5 6 12 0 0 0 0 0 0 0 0 0 0 0 133 130 132 0 0 0 0 0 0 0 SECAM NTSC 0 0 36 6 6 0 36 0 0 6 6 55 56 58 7 5 6 12 0 0 0 0 0 0 0 0 0 0 0 133 130 132 0 0 0 0 0 0 0 0 0 36 6 6 0 36 0 0 6 6 55 56 58 7 5 6 12 0 0 0 0 0 0 0 0 0 0 0 133 130 132 0 0 0 0 0 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 S010 5i CR GN S011 5i CB GN S012 HD BL S013 HD CB OF S014 HD CR OF S015 RT CONT S016 RT CB OF S017 RT CR OF S018 RT CL GA S019 PC CL MB S020 PC CL LB 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 S031 G DRIVE S032 B DRIVE S033 (Not display) S034 (Not display) S035 (Not display) S036 (Not display) S037 (Not display) S038 (Not display) S039 ILA COM
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)
4.6.3 PANEL CONTOROL SYSTEM SETTING (*Fixed values) Item No. Item name Variable range 00 - FF 00 - FF 00 - FF 0 - 255 0 - 255 0 - 255 0 - 255 0 - 255 0 - 255 0 - 255 Setting value PAL 00 00 00 0 0 0 0 0 0 0 SECAM NTSC 00 00 00 0 0 0 0 0 0 0 00 00 00 0 0 0 0 0 0 0
P001 TM HOR H P002 TM HOR L P003 TM MIN P004 TEMP0 P005 (Not display) P006 (Not display) P007 (Not display) P008 (Not display) P009 (Not display) P010 (Not display)
4.6.4 DRIVE SYSTEM SETTING (*Fixed values) Item No. Item name Variable range 00 - 3F 00 - 3F 00 - 3F 00 - 03 00 - 01 00 - 03 00 - 3F 00 - 01 00 - 3F 00 - 01 00 - 01 00 - 3F 00 - 3F 00 - 3F 00 - 03 00 - 01 Setting value PAL 15 13 15 01 01 01 08 01 06 01 01 1A 1B 2E 00 01 SECAM NTSC 15 13 15 01 01 01 08 01 06 01 01 1A 1B 2E 00 01 15 13 15 01 01 01 08 01 06 01 01 1A 1B 2E 00 01
D001 SLV GN D002 SLVH GN D003 SLH GN D004 SLV Pf D005 SLH Pf H D006 SLH Pf L D007 SL EGCON D008 SL EGONF 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
1-18 (No.YA209)
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 00 - 3F 00 - 01 00 - 01 00 - 3F 00 - 01 00 - 03 00 - 3F 00 - 01 00 - 01 00 - 01 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 30 01 00 01 1A 01 0B 01 20 01 10 01 01 15 01 00 04 01 01 15 01 00 05 01 01 01 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 30 01 00 01 1A 01 0B 01 20 01 10 01 01 15 01 00 04 01 01 15 01 00 05 01 01 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 30 01 00 01 1A 01 0B 01 20 01 10 01 01 15 01 00 04 01 01 15 01 00 05 01 01 01 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 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 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 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
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 D032 pb PfH D033 pb PfL D034 pb CRG D035 pb CRGON D036 pb ONF D037 pr GN D038 pr PfH D039 pr PfL D040 pr CRG D041 pr CRGON D042 pr ONF D043 ENH ONF 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)
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)
(No.YA209)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.YA209)
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) 4.6.5 Item No.
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 Setting value PAL 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
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) Description Receive a 625i component ramp pattern signal. Set "PICTURE MODE" to STANDARD. Set "ZOOM" to FULL. Set "WHITE BALANCE" to MID. Select "1.ADJUST" from the SERVICE MODE. Set < S030 > (R DRIVE), < S031> (G DRIVE) and < S032 > (B DRIVE) to "133". (7) Set < S001 >(adjustment setting mode change) to set "8" and it change to the 625i A-D offset adjustment setting mode. (8) 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. (9) Set < S001 > to set "0" and it change to the normal mode. (10) Press the [MUTING] key to memoirze the set value. (1) Receive a 1125i (50Hz) gray scale pattern signal. (2) Set "PICTURE MODE" to STANDARD. (3) Set "ZOOM" to FULL. (4) Set "WHITE BALANCE" to MID. (5) Select "1.ADJUST" from the SERVICE MODE. (6) Set < S030 > (R DRIVE), < S031> (G DRIVE) and < S032 > (B DRIVE) to "133". (7) Set < S001 > (adjustment setting mode change) to set the values "12" and it change to the 1125i black level adjustment setting mode. (8) Adjust < S012 > (1125i brightness) to set the 0% black part in the upper half of the screen to be brightest. (9) Set < S001 > to set "0" and it change to the normal mode. (10) Press the [MUTING] key to memoirze the set value.
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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)
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1125i (50Hz) A-D OFFSET
Remote control unit Signal generator
[1.ADJUST] S001: PREPARE (Adjustment setting mode change)
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(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 "WHITE BALANCE" to MID. 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". (7) Set < S001 > (adjustment setting mode change) S031: G DRIVE(Green drive) to set "13" and it change to the 1125i A-D offset S032: B DRIVE(Blue drive) adjustment setting mode. (8) Adjust < S013 > (1125i Cb offset) to minimize the blue noise in the upper half of the screen. (9) Adjust < 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.YA209)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 "WHITE BALANCE" to MID. Set "MULTI PICTURE" 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). (6) Select "1.ADJUST" from the SERVICE MODE. (7) Set < S030 > (R DRIVE), < S031> (G DRIVE) and < S032 > (B DRIVE) to "133". (8) Set < S001 > (adjustment setting mode change) to set "17" and it change to the sub screen A-D offset adjustment setting mode. (9) 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. (10) Set < S017 > (Sub screen cr offset) to minimize the red noise in the upper half of the screen. (11) Readjust < S016 > and < S017 > to set the upper half of the screen to be the blackest. (See Fig.9) (12) Set < S001 > to set "0" and it change to the normal mode. (13) Press the [MUTING] key to memoirze the set value. (1) (2) (3) (4) (5) (6) Receive a PAL 75% all white signal. Set "PICTURE MODE" to STANDARD. Set "ZOOM" to FULL. Set "WHITE BALANCE" to MID. 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.
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WHITE BALANCE (HIGHLIGHT)
Remote control unit Signal generator
[1.ADJUST] S030: R DRIVE (Red drive) S031: G DRIVE (Green drive) S032: B DRIVE (Blue drive)
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.YA209)
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 PIP/TV/ DVD switch is at the "TV" side. If the switches have not been properly set, you cannot enter the SERVICE MODE. (1) Press [DISPLAY] key and [MUTING] key simultaneously, then enter the SERVICE MODE. (2) Press the [2] key SELF CHECK MODE. (3) Press the [ZOOM] key to enter Page 2 of the SELF CHECK MODE. *Use the [CINEMA] 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. 5.1.3 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. NOTE: Only SYNC (with/without sync signals) will be neither counted nor stored. 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.
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Fig.1 (No.YA209)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] Not used. Not used. 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 90pC 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
TIM MSM
-----
-----
DIGI MEM
Not used. Confirmation of reply of ACK signal which uses I2C communication. IC7602 [DIGITAL SIGNAL PWB]
--SDA
--If it checks whenever I2C communication is performed and no reply of ACK signal an error will be counted. Same as above. ----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. -----
AV select switch 3 dimensions YC separator Multi sound process RF tuner
AVSW Same as above. IC301, IC501 [ANALOG SIGNAL PWB] YC AIO TUN Not used. Not used. Confirmation of reply of ACK signal which uses I2C communication. TU3001 [RECEIVER PWB] Not used. Confirmation of reply of ACK signal which uses I2C communication. IC3001 [DIGITAL SIGNAL PWB] Confirmation of reply of ACK signal which uses I2C communication. IC3001 [DIGITAL SIGNAL PWB] Not used. Not used.
SDA ----SDA
Ghost reduction DIST process
GCR IP
--SDA
RGB process
RGB
SDA
DVI (Digital communication) Digital input
DVI HDMI
-----
1-24 (No.YA209)
< Page 2 of screen > Detection item Fan lock Abnormal of operation of PANEL Abnormal rise oftemperature 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.
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 Low bias line short protection Abnormal rise of temperature in audio circuit POWER LED flash cycle Low luminance blue turnig on and off at 1 second intervals. High luminance blue 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.YA209)1-25
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.YA209)
Printed in Japan VPT
ENGLISH
LT-Z32SX4B LT-Z26SX4B LT-Z32SX4S LT-Z26SX4S
WIDE LCD PANEL TV
INSTRUCTIONS
LCT1732-001A-H
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
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.
ENGLISH
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.
1
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.
Pixel defects
Distance recommendations
ENGLISH
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.
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Failure to take the following precautions may cause damage to the television or remote control.
DO NOT block the TVs 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. DO NOT subject the TV to direct sunlight. 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 it. If there is a fault, unplug the unit and call a service technician. Do not attempt to repair it yourself or remove the rear cover.
2
Cleaning the screen
The screen is coated with a special thin film to reduce reflection. If this film is damaged, uneven colours, discolouration, scratches, and other problems that cannot be repaired may occur. Pay attention to the following when handling the screen. Do not use glue or adhesive tape on the screen. Do not write on the screen. Do not allow the screen to come in contact with any hard objects. Do not allow condensation to form on the screen. Do not use alcohol, thinner, benzene or other solvents on the screen. Do not rub the screen hard.
ENGLISH
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.
To start the D.I.S.T. demonstration: Press the H button to display the menu bar. Then press the yellow button. A picture split in two (D.I.S.T. turned on and D.I.S.T. turned off) will appear on the screen. To quit the D.I.S.T. demonstration: Press the yellow button, b button, 6 p buttons or any of the number buttons.
D.I.S.T. demonstration
3
CONTENTS
Setting up your TV ...................................5
Installation.................................................. 5 Using the stand .......................................... 5 Removing the terminal covers ................... 6 Connecting the aerial and video cassette recorder (VCR) ....................................... 7 Connecting the power cord to the AC outlet....................................................... 8 Putting the batteries into the remote control..................................................... 8 Initial settings (Setup tour) ......................... 8 Turn the TV on from standby mode ......... 10 Choose a TV channel .............................. 10 Adjust the volume .................................... 10 Using the Menu........................................ 10
PICTURE menu ...................................... 25
TV buttons and functions......................10
SOUND menu ......................................... 29
PICTURE MODE...................................... 25 BACK LIGHT............................................ 25 CONTRAST ............................................. 25 BRIGHT.................................................... 25 SHARP..................................................... 25 COLOUR.................................................. 25 TINT ......................................................... 25 WHITE BALANCE.................................... 25 FEATURES .............................................. 26 STEREO / I II ........