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SERVICE MANUAL
PDP COLOR TELEVISION
2 2005 YA100
PD-42X795/S, PD-50X795/Z
BASIC CHASSIS
FP2
VM-42X795 / VM-50X795 [PLASMA DISPLAY UNIT]
POWER
TU-42X795 / TU-50X795 [RECEIVER UNIT]
TABLE OF CONTENTS
1 2 3 4 5
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-38
COPYRIGHT © 2005 Victor Company of Japan, Limited
No.YA100 2005/2
SPECIFICATION
Items Dimensions ( W × H × D ) Mass Plasma Display Unit Receiver Unit Plasma Display Unit Receiver Unit Analog Digital Contents PD-42X795 PD-50X795 116cm × 73.1cm × 10.8cm (45-3/4" × 28-7/8" × 4-1/4") 135cm × 83.6cm × 11cm (53-1/4" × 33" × 4-3/8") 43.5cm × 7cm × 31.3cm (17-1/4" × 2-7/8" × 12-3/8") 38kg (83.6lbs) 51kg (112.2lbs) 4.3kg (9.5lbs) CCIR (M) ATSC terrestrial / Digital cable NTSC BTSC (Multi Channel Sound) Closed caption (T1-T4 / CC1-CC4) 02ch - 06ch : 54MHz - 88MHz 07ch - 13ch : 174MHz - 216MHz 14ch - 69ch : 470MHz - 806MHz 54MHz - 804MHz Low Band : 02 - 06 High Band : 07 - 13 Mid Band : 14 - 22 Super Band : 23 - 36 Hyper Band : 37 - 64 Ultra Band : 65 - 94, 100 - 135 Sub Mid Band : 01, 96 - 99 191 Channels 45.75 MHz 41.25 MHz (4.5MHz) 3.58 MHz AC120V, 60Hz 387.4W (Max) / 369W (Avg) 491.4W (Max) / 468W (Avg) 39.9W (Max) / 38W (Avg) 42V wide aspect (16:9) 50V wide aspect (16:9) Diagonal : 107.5cm (H:933cm × V : 53.3cm) Diagonal : 127.0cm (H:110.7cm × V : 62.2cm) Horizontal : 1024 pixels × Vertical : 768 pixels (XGA) Horizontal : 1365 pixels × Vertical : 768 pixels (W-XGA) 20W + 20W 9.5cm × 1cm (3-3/4 × 7-7/16"), oval type × 2 2cm (13/16"), round type × 2 13cm × 6.5cm (5-1/8 × 2-9/16"), oval type × 2 F-type connector, 75 unbalanced, coaxial × 2 RCA pin jack × 6
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TV RF System (Analog / Digital) Color System (Analog) Sound System (Analog) Teletext System (Analog) TV Receiving Channels and Frequency (Analog) VHF Low VHF High UHF CATV TV / CATV Total Channel Intermediate Frequency (Analog) Video IF Sound IF Color Sub Carrier Frequency (Analog) Power Input Power Consumption Plasma Display Unit Receiver Unit Plasma Display Panel (PDP) Screen Size Display Pixels Audio Power Output Speaker Main (DD) Tweeter Woofer Antenna terminal (VHF/UHF, ATSC / DIGITAL CABLE IN) Video / Audio Input Component Video [INPUT-1/2/3/4] [INPUT-1/2] 1125i / 750p Y : 1V (p-p) (Sync signal: 0.35V(p-p), 3-value sync.), 75 Pb/Pr : ±0.35V(p-p), 75 525p / 525i Y : 1V (p-p), positive (Negative sync), 75 Pb/Pr : 0.7V(p-p), 75 S-Video Mini-DIN 4 pin × 3 [INPUT-1/3/4] Y: 1V (p-p), positive (Negative sync), 75 C: 0.286V (p-p) (Burst signal), 75 Video 1V (p-p), positive (Negative sync), 75 , RCA pin jack × 4 Audio 500mV (rms), high impedance, RCA pin jack × 8 Digital Input Video HDMI connector × 1 (Digital-input terminal is not compatible with picture signals of computer signal) Audio Digital: HDMI connector × 1 Anarog: 500mV(rms) (-4dBs), high impedance, RCA pin jack × 2 Audio Output RCA pin jack × 2 Variable More than 0 to 1000mV (rms) (+2.2dBs) Fix 500mV(rms), (-4dBs), low impedance (400Hz when modulated 100%) Monitor / Recording Output S-Video Mini-DIN 4pin × 1 Y: 1V (p-p), 75 C: 0.286V(p-p) (burst signal), 75 Video 1V (p-p), 75, RCA pin jack × 1 Audio 250mV(rms) (-10dBs), Fs-18dB low impedance, RCA pin jack × 2 PC (RGB) Input 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) Center Channel Input 500mV(rms) (-4dBs), high impedance,RCA pin jack × 1 Sub woofer Output More than 0 to 1000mV (rms) (+2.2dBs), low impedance (80Hz when modulated 100%), RCA pin jack × 1 Digital Audio Optical Output Digital SPDIF × 1 AV COMPULINK lll 3.5mm mini jack × 1 iLink Input/Output TS In/Out (4-pin, S400) × 2, IEEE1394 compliant DTCP digital copy protection compatible Display Input / Output Control / Audio D-sub 26-pin connector × 2 (For system cable) Video DVI-D 24-pin connector × 2 Remote Control Unit RM-C14G (AA/R6 / UM-3 battery × 2)
Design & specifications are subject to change without notice. 1-2 (No.YA100)
SECTION 1 PRECAUTION
1.1 SAFETY PRECAUTIONS 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. (9) 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 0.15µF 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.).
AC VOLTMETER (HAVING 1000 /V, OR MORE SENSITIVITY)
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0.15 F AC-TYPE 1500 10W GOOD EARTH GROUND
(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) If any repair has been made to the chassis, it is recommended that the PDP POWER SUPPLY setting should be checked or adjusted. (6) The high voltage applied to the PDP must conform with that specified in Service manual. Excessive high voltage can cause an increase in arcing and possible component damage, therefore operation under excessive high voltage conditions should be kept to a minimum, or should be prevented. If severe arcing occurs, remove the AC power immediately and determine the cause by visual inspection (incorrect installation, cracked or melted high voltage harness, poor soldering, etc.). To maintain the proper components in the circuitry including the PDP must be the exact replacements or alternatives approved by the manufacturer of the complete product. (7) Do not check high voltage by drawing an arc. Use a high voltage meter or a high voltage probe with a VTVM. Discharge the picture tube before attempting meter connection, by connecting a clip lead to the ground frame and connecting the other end of the lead through a 10k 2W resistor to the anode button. (8) When service is required, observe the original lead dress. Extra precaution should be given to assure correct lead
PLACE THIS PROBE ON EACH EXPOSED METAL PART
(No.YA100)1-3
1.2
INSTALLATION
1.2.1 HEAT DISSIPATION If the heat dissipation vent behind this unit is blocked, cooling efficiency may deteriorate and temperature inside the unit will rise. The temperature sensor that protects the unit will be activated when internal temperature exceeds the pre-determined level and power will be turned off automatically. Therefore, please 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. 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. SPACE REQUIRED FOR INSTALLATION OF THE DISPLAY UNIT
1.2.3 FALL TIP PREVENTION MEASURES Take precautionary measures to prevent the unit from falling or tipping to protect against emergencies such as earthquakes as well as accidents. Fasten the supplied hook for tip fall prevention using the screws, also supplied, behind the display unit, and use them together with durable cords (to be purchased separately) to secure the unit to a robust part such as the wall surface or pillars.
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8 inch/200 mm 6 inch/150 mm 6 inch/150 mm 2 inch/50 mm 2 inch/50 mm
SPACE REQUIRED FOR INSTALLATION OF THE RECEIVER UNIT
4 inch/100 mm 4 inch/100 mm
4 inch/100 mm
4 inch/100 mm
PLASMA DISPLAY RECEIVER
POWER
The supplied hook for tipfall prevention
1-4 (No.YA100)
1.3
PRECAUTIONS REGARDING PDP 1.3.4 OPTICAL FILTER (PANEL FILTER) Avoid placing the unit under direct sunlight over a prolonged period of time. This may cause the optical filter to deteriorate in quality and color. Clean the filter surface by wiping it softly lightly with outing flannels a soft and lightly fuzz cloth (such as flannel). Do not use solvents such as benzine 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. As the filter surface is fragile., do not scratch or hit it with hard materials. 1.3.5 NOTES PRECAUTIONS FOR PEPLACEMENT OF EXTERIOR PARTS Take note of the following when replacing exterior parts (back REAR COVER, FRONT PANEL, optical filter) · Do not exert pressure on the front of the PDP (glass surface). · Pay careful attention not to scratch or stain the front of the PDP (surface) with hands. · When replacing exterior parts, the front of the PDP should be placed facing downward. Place a mat, etc. underneath to avoid causing scratches to the front surface. However, never use materials that are too soft (such as blanket cloth). If replacement is made with the PDP surface facing downward and in contact with the blanket, pressure may be exerted on the PDP, thus causing damages to it.
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1.3.2 RESIDUAL IMAGE / BURN-IN ON SCREEN Like CRTs, "burn-in" may occur when a same image is continuously displayed over an extended period of time. As this may also shorten the life span of the PDP. Therefore, turn off the display when not in use, scroll the screen, make use of screen-savers, or allow even distribution on the display by inverting the brightness, switching to complementary colors or inserting animated images at periodic intervals. As burn-in is more likely to occur with high brightness and contrast settings, try to use neutral gradations or medium tone colors. Burn-in does not occur in the case of animated images. When switching to another image after continuous display of the previous image, residual images may become prominent, as luminance in a part of the display is higher than the other parts. This is not a defect but is because due to the discharge surface of the lighted portion has become being relatively activated and its luminance higher than the unlighted parts. 1.3.3 INFRARED RAYS Near Near-infrared rays (800nm to 1000nm) are emitted from the front of the panel, and this may give rise to malfunctions in infrared remote controls or communication systems placed near it. In this case, avoid direct infrared rays (and reflected rays in some cases) from the screen by either changing the direction of the unit or other infrared systems or securing a longer keeping a distance from the screen.
1.3.1 PRECAUTIONS DURING NOTES FOR TRANSPORTATION When transporting the unit, pressure exerted on the internal PDP (Plasma Display 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 prior to delivery such as through explaining the handling instructions to transporters. Ensure that the following requirements are met during transportation, as the PDP of this unit is made of glass and therefore fragile: (1) Avoid vibrations and impacts The unit may be broken if it is toppled sideways even when properly packed. Ensure that the unit is carried by at least 2 persons and pay careful attention not to exert any vibration or impact on it. (2) Do not place equipment horizontally Ensure that it is placed upright and not horizontally during transportation and storage as the PDP is very vulnerable to lateral impacts and may break easily under such circumstances. During transportation, ensure that the unit is loaded along the traveling direction of travel 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.YA100)1-5
SECTION 2 SPECIFIC SERVICE INSTRUCTIONS
2.1 FEATURES V-CHIP Since the V-CHIP is built in, it can choose, view and listen to a healthy program. MTS STEREO The voice multiplex function of the MTS system is built in. (MTS = Multi channel Television Sound system) NATURAL CINEMA Watching the movie or animation, press the Natural Cinema to adjust the out line of the images to make thin more sharp. BBE High definition audio adds natural, clear and extraordinary sound quality to any program. VIDEO INPUT LABEL This function is used to label video input connections for the onscreen displays. A.H.S. Adds a more spacious surround sound. Music gives basic effect and Movie for more effect. 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. SMART CAPTION Smart caption will appear when you press the MUTING button, only on channels where the broadcast contains CLOSED CAPTION information. SMART SOUND Decreases high sound levels, giving a regulated sound level.
VIDEO STATUS Expression of a favorite screen can be chosen by the VIDEO STATUS function. [STANDARD DYNAMIC THEATER GAME] DIGITAL INPUT Digital-in will display when any picture signal (480i/ 480p, 720p/ 1080i) in Digital-in is displayed.
2.2
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SYSTEM SETTEING Be sure to carry out the following operation at the end of the procedure.
MAIN MENU SCREEN
(1) Set to 0 minutes using the [SLEEP TIMER] key. (2) Press the [VIDEO STATUS] key and [DISPLAY] key simultaneously, then enter the SERVICE MODE. (3) When the Main Menu is displayed, press [2] key to enter the self check mode. (4) Turn off the power by pressing the [POWER] key on the remote control unit.
SERVICE MENU 1.ADJUST 2.SELF_CHK 3.I2C STOP
SELF CHECK MODE SCREEN
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
LOB SYNC TIM MSM MEM YC TUN IP DVI
1-6 (No.YA100)
2.3
TECHNICAL INFORMATION
2.3.1 PDP STRUCTURE AND CHARACTERISTIC This unit uses the flat type panel PDP (Plasma Display Panel), instead of the conventional CRT (Cathode Ray Tube), as a display unit.
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Direction Horizontally Vertically No.1 Pixel sequence No.2 Pixel sequence No.1365 No.1023 Pixel sequence No.1366 No.1024 Pixel sequence PD-50X795 PD-42X795 No.1 Pixel line No.2 Pixel line
2.3.1.1 PIXEL (CELL) ARRAY PDP is constructed by sealing the xenon, which emits neon and ultraviolet rays for discharging purpose, in between the electrodes lay on the front glass substrate and rear glass substrate. One pixel is composed of 3 RGB cells, with cell pitch of 0.280mm (1 pixel 0.810mm) [PD-50X795] / 0.304 mm (1 plxel 0.912 mm) [PD42X795] horizontally and 0.810mm [PD-50X795] / 0.693 mm [PD-42X795] vertically. The cell is arrayed in each RGB color as shown in Fig. 1. One pixel is formed by interlacing each RGB color cell. One cell size is 0.280mm [PD-50X795] / 0.304 mm [PD-42X795] horizontally and 0.810mm [PD-50X795] / 0.693 mm [PD-42X795] vertically.
B G R B G R
B G R B G R B G R B G R
B G R B G R
No.767 Pixel line No.768 Pixel line
B G R B G R B G R B G R
B G R B G R B G R B G R
0.810mm PD-50X795 0.693mm PD-42X795 (Vertically) Pixel pitch(Cell pitch)
1 pixel (1 dot)
PD-50X795 PD-42X795
0.810mm 0.921mm (Horizontally) Pixel pitch
B Cell G Cell R Cell
0.280mm PD-50X795 PD-42X795 0.304mm (Horizontally) Cell pitch
Fig.1
2.3.1.2 PIXEL DEFECTS Though PDP is made by means of ultra precise technology, there are cases whereby not all pixels (cell) will function properly. In some cases, there may be defective pixels that do not light at all or the ones that always light on. There are 3 types of Pixel defects, [Bright Dot Defects], [Dark Dot Defects] and [Flicker Dot Defects], as defined respectively in the following: (1) 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.
(2) 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. (3) 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.YA100)1-7
2.3.2 MAIN CPU PIN FUNCTION [IC7601 = DIGITAL SIGNAL PWB ASS'Y : RECEIVER UNIT]
Pin 1 2 3 4 5 6 7 8 9 Pin name VHOLD1 HFLT1 NC NC I/O I Function Data slice for main screen closed caption Pin 51 52 53 54 Pin name NC NC NC NC I/O O O O O Not used Not used Not used Not used Function
I/O LPF for main screen closed caption video input O O Not used Not used
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DIGR0 TB1in O I R [0] for OSD 55 NC O Not used Not used Not used Not used AC power for timer clock Remote control Not used 56 NC O REMO I 57 NC O BYTE I 58 NC O CNVss DIGG0 DIGB0 I CPU programming mode select [Normal = L] 59 NC O Not used 10 11 12 13 O G [0] for OSD 60 NC O Not used O I B [0] for OSD 61 NC O I Not used RESET Reset for main CPU [Reset = L] 62 HSYNC NC H. sync for OSD Not used Xout Vss O I System clock osillation (crystal) : 16MHz GND 63 O I 14 15 64 VSYNC NC V. sync for OSD Not used Xin System clock osillation (crystal) : 16MHz 65 O 16 17 18 VccI I 3.3V power supply 66 NC O Not used OSC1 I Clock for OSD Not used 67 NC O Not used OSC2 INT1 INT0 O I 68 NC O Not used 19 AV COMPULINK control 69 NC O Not used 20 I Request for sub(chassis) CPU communication (serial data) Ys (blanking) for OSD 70 NC O Not used 21 22 23 24 25 26 27 28 OUT1 O 71 NC O Not used Not used OUT2 O YM (transparence) for OSD Not used Not used Not used Not used 72 NC O NC NC NC NC O O O O 73 74 75 76 NC NC NC NC O O O O Not used Not used Not used Not used CTA2/RTS2 O Not used 77 NC O Not used CLK2 RxD2 O Not used 78 NC O Not used 29 30 O I Data transmission (serial) for digital tuner control 79 NC O Not used TxD2 Data receive (serial) for digital tuner control 80 NC O Not used 31 32 SDA2 I/O Not used O 81 NC O Not used DIGR1 R [1] for OSD 82 NC O Not used Not used 33 DIGG1 DIGB1 O G [1] for OSD B [1] for OSD 83 NC O 34 35 36 O I 84 WAKE O I TxD0 Data receive (serial) for external programming 85 CARD_DET RxD0 O I Data transmission (serial) for external programming 86 POWER_SW SDAM SCLM I 37 CLK0 Clock for external programming 87 38 RTS0 P5.7 O I Busy for external programming [Operation = H] Not used 88 O 39 40 41 42 89 DIGR2 O R [2] for OSD P5.6 O I Not used 90 DIGG2 DIGB2 O G [2] for OSD B [2] for OSD HOLD CPU programming hold [Hold = H] 91 O P5.4 O Not used 92 NC O I I Not used 43 44 45 46 P5.3 P5.2 O O Not used Not used 93 94 KEY2 KEY1 Key scan data for display switch button KEY2 Key scan data for display switch button KEY1 P5.1 O Not used 95 VHOLD2 HLF2 I Data slice for sub screen closed caption WR O CPU programming mode select [Normal = L] 96 I/O LPF for sub screen closed caption video input I Video(Y) for sub screen closed caption Test terminal [L Fixed] 5V power supply 47 P4.7 O I Data transmission for sub(chassis) CPU communication (serial) 97 CVIN2 48 49 50 P4.6 Data receive for sub(chassis) CPU communication (serial) 98 TVSETB VCCE I P4.5 P4.4 I Clock for sub(chassis) CPU communication (serial) 99 I O Not used 100 CVIN1 I Video(Y) for main screen closed caption
Sleep mode release for sub(chassis) CPU [Release = L] Card detection for ATSC digital tuner [Detection = L]
Power switch (mechanical) detection [Detection = L]
I/O Data for Inter IC (serial) bus control : main memory (IC7602) Clock for Inter IC (serial) bus control : mainmemory (IC7602)
1-8 (No.YA100)
2.3.3 SUB (CHASSIS) CPU PIN FUNCTION [IC7001 = DIGITAL SIGNAL PWB ASS'Y : RECEIVER UNIT]
Pin 1 2 3 4 5 Pin name LB_PRO P_MU JP_CSB I/O O O O Not used Picture muting [Muting = H] Not used Function Pin 51 52 53 Pin name BS_TXD BS_RXD NC I/O O I O I Function Data transmission for digital tuner communication Data receive for digital tuner communication Not used
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A_MU O Audio muting (for AUDIO OUT) [Muting = H] 54 VREF+ 3.3V power supply M_MU O Audio muting (for MONITOR OUT) [Muting = H] 55 PDP_TX O I 6 PC_SEL O RGB(PC) INPUT select [ON = H] 56 PDP_RX SDA0 SCL0 7 8 9 ON_TIMER ILA0 ILA1 O POWER INDICATOR (LED) brightness [LOW = L] 57 O O Not used Not used 58 59 O SDA_DVI 10 11 12 ILA2 O Not used 60 SCL_DVI AVSS O I POW_LED O POWER LED lighting [ON = H] Not used 61 GND WORD MI_CK MI_TX O I 62 DIGI_PHOT AGC 13 Clock for main CPU communication 63 I Not used 14 15 16 I Data receive for main CPU communication 64 EXT_YS1 I Not used Not used MI_RX O Data transmission for main CPU communication 65 EXT_YS2 I MI_REQ VDD O I Data request for main CPU communication [Request = L] 66 VDD I 3.3V power supply 17 3.3V power supply Not used 67 DIGI_PRO O 18 FOSC VSS O I 68 GCR_RST O Not used 19 20 GND 69 GR_ON O Not used X1 3.3V power supply Not used 70 SYNC_SEL NC O Multi screen control [Digital = L] Not used 21 22 23 24 X0 O I 71 O VDD 3.3V power supply 72 NC O Not used OSC1 I System clock osillation (crystal) : 16MHz 73 SBD5 OSC0 O I System clock osillation (crystal) : 16MHz 3.3V power supply 74 SBT5 NMI I 25 26 MODE 75 I 3.3V power supply BS1.5CTL A92RES O Digital tuner power control [ON = H] 76 COMP I Not used 27 O Reset for IC1001(3D YC SEP / COLOR DEMODULAT) [Reset = H] 77 REMO I Remote control 28 BS_RST O Reset for Digital tuner [Reset = L] Not used 78 VSYNC WAKE I V. sync pulse 29 30 31 LIP_RST O 79 I SOFT_OFF O I Not used 80 POWERGOOD NC I Power error detection NG = H] Not used VMUTE Picture muting request from digital tuner [Muting = L] Video cutoff for digital tuner [Cufoff = H] 81 O I 32 VOUTENB O I 82 RST 33 MDR_CON AVDD System cable connection monitor for display unit (PDP) 83 VDD I 3.3V power supply 34 I 3.3V power supply 84 SCL3A O Clock for Inter IC (serial) bus control 35 36 BS_POW O Not used 85 SDA3A SCL3B I/O Data for Inter IC (serial) bus control O DsyncSW2 O Sync select for DIGITAL-IN [Cotrolled with 99-pin] 86 Clock for Inter IC (serial) bus control 37 38 39 40 LB_POW O Not used Not used 87 88 SDA3B I/O Data for Inter IC (serial) bus control O Not used NC O I DIGI_SYNCSEL HOTPLUG Video communiation monitor for display unit (PDP) 89 DIGI_LRSW O I DIGITAL-IN control MECA_SW I Mechanical monitor for POWER switch [Push = L] 90 DIGI_INT Reset for HDMI process [Reset = L ] Reset for DVI format conversion 41 MAIN_POW MSP_RST O Main power control [ON = L] 91 DVI_RST O 42 43 O I AUDIO OUT output mode select [VARIABLE = L] 92 VSS GND VREFAFT2 Standard Voltage (0V) power supply 93 SCL5055 O 44 45 I Not used 94 VFORMATSEL SDA5055 O Not used AFT1 I AFT voltage for VHF/UHF tuner 95 46 47 48 KEY2 I Not used 96 OSD_MODE_SEL O Not used KEY1 I Not used 97 NC O Not used NC O Not used 98 15K/OTH O Main video select [Fixed H] 49 NC O I Not used 99 DsyncSW1 O I 50 AC_IN AC power pulse for timer clock 100 57 BUSY
Data transmission for panel CPU communication
Data receive for panel CPU communication
I/O Data for Inter IC (serial) bus : sub memory (IC7002) Clock for Inter IC (serial) bus : sub memory (IC7002)
I/O Data for Inter IC (serial) bus for panel communication Clock for Inter IC (serial) bus for panel communication
Photo sensor for DIGITAL-IN illegal copy protection
DIGITAL-IN voltage detection [Detection = H]
I/O Data for writing on board (connect CN01P : for Frash ROM type) Clock for writing on board (connect CN01P : for Frash ROM type)
Sleep mode release for sub(chassis) CPU [Release = L]
Reset for sub(chassis) CPU [Reset = L]
Clock for Inter IC (serial) bus : JCC5055 (DIST process)
I/O Data for Inter IC (serial) bus : JCC5055 (DIST process)
Sync select for DIGITAL-IN [Cotrolled with 36-pin]
Busy monitor for JCC5057 (RGB process)
(No.YA100)1-9
2.3.4 PANEL CPU PIN FUNCTION [IC807 = DISPLAY INTERFACE PWB ASS'Y : DISPLAY UNIT]
Pin 1 2 3 4 5 Pin name SYSTEM0 SYSTEM3 AVCC X2 X1 I/O I I Function PDP size select [0V=50V XGA, 1.75V=42V XGA] PDP maker select [0V=SAMSUNG, 1.75V=LG] 5.0V power suplly Not used GND Pin 34 35 36 Pin name NC NMI A_MU HD I/O O I O I Not used Port for writing on board control [Writing=L] Audio muting [Muting=H] Not used Function
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37 38 LED_ONTIMER O I POWER LED stand-by control [ON=H] 6 7 8 VCL I GND 39 REMO Not used RES Reset for panel CPU [Reset=L] GND 40 LED_POW O I POWER LED control [ON=H] TEST I 41 P85 P86 9 VSS GND 42 Emulator connection 10 11 12 OSC2 OSC1 O I System clock osillation (crystal) : 16MHz 43 P87 Emulator connection System clock osillation (crystal) : 16MHz 5.0V power suplly 44 SCK3 RXD O I Clock for writing on board VCC 45 Data receive for writing on board 13 14 PW_LOB O Power control [ON=L] 46 TXD O I Data trnsmission for writing on board PANEL_PW_ON O Panel power control [ON=L] Not used 47 AC_DET AC power frequency detection [Detection=H] Not used 15 16 NC O 48 NC O I NC O Not used 49 RXD2 Data receive for main CPU communication 17 I2C_STOP O Inter IC (serial) bus stop control [Stop=L] 50 TXD2 O 18 19 20 21 22 APL_S_CLK PSCK PLE O Clock for APS loading [PD-50X795] Clock for APS writing [PD-50X795] 51 IRQ O I Sleep mode release [Rlease=H] O 52 ACTIVE O APS loading control [PD-50X795] APS writing control [PD-50X795] 53 VD I V. sync pulse CLE O 54 REC_DET PSS I PSSC SDA1 O Data transmission for APS loading [PD-50X795] 55 I 23 I/O Data for Inter IC (serial) bus control : panel memory (IC805) O Not used 24 PWM 25 SCL1 O Clock for Inter IC (serial) bus control : panel memory (IC805) 56 FAN_LOCK SYSTEM2 I 26 SDA0 SCL0 I/O Data for Inter IC (serial) bus control : Audio control, Temp. sensor O Clock for Inter IC (serial) bus control : Audio control, Temp. sensor 57 58 I Not used 27 28 SYSTEM 1 I Fan select [Used=H] SDA2 SCL2 I/O Data for Inter IC (serial) bus control : PDP communication O Clock for Inter IC (serial) bus control : PDP communication 59 THEM_DET I Temp. sensor detection [Detection=H] 29 60 (AMP_PRO2) AMP_PRO1 I GND 30 31 32 33 SLE NC O PDP communication control [PD-50X795] 61 I Not used I/O Not used O O Not used Not used 62 EE_CDS I Not used NC NC 63 64 KEY1 KEY2 I I Not used Not used
Emulator connection / Port for writing on board [Writing=H]
Data transmission for main CPU communication
Power switch (mechanical) detection [Detection=H]
System cable monitor for receiver unit [Connection=L] PDP Inter IC (serial) bus communication select [Permission=H][PD-42X795], Data receive for APS loading [PD-50X795] Fan abnormality detection [Detection=L] [PD-50X795]
1-10 (No.YA100)
SECTION 3 DISASSEMBLY
3.1 DISASSEMBLY PROCEDURE [DISPLAY UNIT: PD-42X795]
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3.1.1 REMOVING THE REAR COVER (Fig.1) (1) Remove the power cord and system cable. (2) Remove the 9 screws [A] and the 12 screws [B], then remove the REAR COVER. 3.1.2 REMOVING THE BACK COVER AND SPEAKER HOLDER (Fig.1) (1) Remove the 8 screws [C], then remove the BACK COVER. (2) Remove the SPEAKER HOLDER. 3.1.3 REMOVING THE TERMINAL COVER (Fig.1.) · Remove the REAR COVER. (1) Remove the 6 screws [D], then remove the CHASSIS SHIELD BRACKET. (2) Remove the 2 screws [E] and the 5 screws [F], then remove the TERMINAL COVER. 3.1.4 REMOVING THE LINE FILTER PWB (Fig.1) · Remove the REAR COVER. · Remove the CHASSIS SHIELD BRACKET. · Remove the TERMINAL COVER. (1) Remove the 2 claws [G], then remove the LINE FILTER INSULATOR. (2) Disconnect the connector [CN8001] from the MAIN POWER PWB . (3) Remove the 2 screws [H] and the 2 screws [I], then remove the LINE FILTER PWB. 3.1.5 REMOVING THE AUDIO PWB (Fig.1) · Remove the REAR COVER. · Remove the CHASSIS SHIELD BRACKET. · Remove the TERMINAL COVER. (1) Disconnect the connectors [CN60SL] / [CN60CB] / [CN60SR] from the AUDIO PWB . (2) Disconnect the connector [CN9001] from the SUB POWER PWB. (3) Disconnect the connector [CN00A] / [CN00C] / [CN00D] from the DISPLAY INTERFACE PWB . (4) Remove the 4 screws [J], then remove the AUDIO PWB.
NOTE: · When exchanging parts etc. with the front side (PDP side) fancing down, place a protection sheet under the DISPALY UNIT to prevent scratches on the front side. · It is advisable to take notes of the connecting locations (connector numbers) of the removed connectors. 3.1.6 REMOVING THE DISPLAY INTERFACE PWB (Fig.1) · Remove the REAR COVER. · Remove the CHASSIS SHIELD BRACKET. · Remove the TERMINAL COVER. (1) Disconnect the connectors [CN00A] / [CN00C] / [CN00D] / [CN00E] / [CN00Q] / [CN00T] / [CN00X] / [CN00V] / [CNAH2] from the DISPLAY INTERFACE PWB . (2) Remove the 4 screws [K], the 2 screws [L] ,and the 2 screws [M], then remove the DISPLAY INTERFACE PWB.
3.1.7 REMOVING THE CHASSIS BASE PWB (Fig.1.) · Remove the REAR COVER. · Remove the CHASSIS SHIELD BRACKET. · Remove the TERMINAL COVER. · Remove the LINE FILTER PWB. · Remove the AUDIO PWB. · Remove the DISPLAY INTERFACE PWB. (1) Remove the 2 screws [N], then remove the CHASSIS BASE PWB.
(No.YA100)1-11
BACK COVER
C
REAR COVER
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A B C A G BACK COVER INSULATOR CHASSIS SHIELD BRACKET D LINE FILTER PWB H I TERMINAL COVER E F I E a F J F N K AUDIO PWB F DISPLAY INTERFACE PWB N M CHASSIS BASE L a TOP SPEAKER HOLDER SPEAKER HOLDER
Fig.1 1-12 (No.YA100)
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3.1.9 REMOVING THE MAIN POWER PWB (Fig.2) · Remove the REAR COVER. (1) Disconnect the connector [CN8001] / [CN8008] / [CN8006] / [CN8005] / [CN8003] / [CN8002] / [CN9001] / [CN8009] from the MAIN POWER PWB . (2) Remove the 8 screws [P], then remove the MAIN POWER PWB. (3) Remove the POWER PWB BRACKET and INSULATOR. 3.1.10 REMOVING THE SUB POWER PWB (Fig.2) · Remove the REAR COVER. (1) Disconnect the connector [CN9001] / [CN9002] / [CN9005] from the SUB POWER PWB . (2) Remove the 4 screws [Q], then remove the SUB POWER PWB. (3) Remove the INSULATOR. 3.1.11 REMOVING THE DISPLAY SWITCH PWB (Fig.2) · Remove the BACK COVER. · Remove the SPEAKER HOLDER. (1) Remove the 2 screws [U] and 3 screws [V], then remove the DISPLAY SWITCH PWB and CONTROL KNOB. (2) Disconnect the connector [CN000T] from the DISPLAY SWITCH PWB . 3.1.12 REMOVING THE DISPLAY LED PWB (Fig.2) · Remove the BACK COVER. · Remove the SPEAKER HOLDER. · Remove the DISPLAY SWITCH PWB. (1) Remove the 2 screws [T], then remove the DISPLAY LED PWB. (2) Disconnect the connector [CN000X] from the DISPLAY LED PWB . 3.1.13 REMOVING THE DD SPEAKER (Fig.2) · Remove the REAR COVER. · Remove the BACK COVER. · Remove the SPEAKER HOLDER. (1) Disconnect the connector [CN60SR] / [CN60SL] from the AUDIO PWB . (2) Remove the 4 screws [U], then remove the DD SPEAKER.
3.1.8 REMOVING THE TEMP. SENSOR PWB (Fig.2) · Remove the REAR COVER. (1) Disconnect the connector [CN800V] from the TEMP. SENSOR PWB PWB . (2) Remove the 1 screw [O], then remove the TEMP. SENSOR PWB.
3.1.14 REMOVING THE WOOFER SPEAKER (Fig.2) · Remove the REAR COVER. (1) Disconnect the connector [CN60CB] from the AUDIO PWB. (2) Remove the 6 screws [V], then remove the WOOFER SPEAKER UNIT. (3) Remove the 8 screws [W], then remove the DUCT COVER. (4) Remove the 12 screws [X], then remove the WOOFER BACK COVER. (5) Remove the 8 screws [Y], then remove the WOOFER SPEAKER.
3.1.15 REMOVING THE PDP (PANEL) UNIT (Fig.2) · Remove the REAR COVER. · Remove the CHASSIS SHIELD BRACKET. · Remove the TERMINAL COVER. · Remove the CHASSIS BASE(with each PWB affixed on the CHASSIS BASE). · Remove the TEMP. SENSOR. · Remove the MAIN POWER PWB. · Remove the SUB POWER PWB. (1) Disconnect the connector [CN60SL] / [CN60CB] / [CN60SR] from the AUDIO PWB . (2) Disconnect the connector [CN00A] / [CN00C] / [CN00D] / [CN00E] / [CN00Q] / [CN00T] / [CN00X] / [CN0V] / [CNAH2] from the DISPLAY INTERFACE PWB. (3) Remove the 16 screws [Z], then remove the BACK BRACKET. (4) Lift the PDP upright and remove it with enough care not to impose shock to the PDP. CAUTION: · Two or more people are required to remove the PDP unit. · The gas pouring port is covered with the protection material.In operation, be careful not to damage the gas pouring port. · Do not touch the front side (glass) of the PDP with your fingers.
(No.YA100)1-13
P Q Z BACK FRAME INSULATOR BRACKET SUB POWER PWB Q
P MAIN POWER PWB P POWER PWB BRACKET Z
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INSULATOR INSULATOR Z BACK FRAME BRACKET Z TEMP. SENSOR PWB O U
GAS insertion hole
PDP UNIT
U
DD SPEAKER
DD SPEAKER
T
W
X
DISPLAY LED PWB
INSULATOR DISPLAY SWITCH PWB R
DUCT COVER
WOOFER BACK COVER
W
S
CONTROL KNOB
DUCT COVER
X
Y
V
WOOFER SPEAKER
TOP
Y
WOOFER SPEAKER
Fig.2 1-14 (No.YA100)
3.1.16 REMOVING THE PWB IN PDP UNIT 3.1.16.1 REMOVING THE LOGIC-BUFFER-E PWB (Fig.3) · Remove the PDP UNIT. (1) Disconnect the connector [CN806] / [CN2500] / [CN2501] / [CN2502] / [CN2503] / [CN2504] / [CN2505] / [CN2506] / [CN2507] / [EF1] from the LOGIC-BUFFER-E PWB . (2) Remove the 14 screws [a], then remove the LOGIC-BUFFER-E PWB. 3.1.16.4 REMOVING THE LOGIC-MAIN PWB (Fig.3) · Remove the PDP UNIT. (1) Disconnect the connector [CN2001] / [CN2002] / [CN2003] / [CN2004] / [CN2005] / [CN2006] / [CN207] / [LA1] from the LOGIC-MAIN PWB . (2) Remove the 6 screws [d], then remove the LOGIC-MAIN PWB. 3.1.16.5 REMOVING THE Y-MAIN PWB (Fig.3.) · Remove the PDP UNIT. (1) Disconnect the connector [CN5001] / [CN5002] / [CN5003] / [CN5004] / [CN5005] / [CN5006] / [CN5007] / [CN5008] from the Y-MAIN PWB . (2) Remove the 7 screws [e], then remove the Y-MAIN PWB. 3.1.16.6 REMOVING THE Y-BUFFER-U PWB (Fig.3) · Remove the PDP UNIT. (1) Disconnect the connector [CN5401] / [CN5402] / [CN5403] / [CN5404] / [CN5405] / [CN5407] from the Y-BUFFER-U PWB. (2) Remove the 3 screws [f],then remove the Y-BUFFER-U PWB.
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3.1.16.2 REMOVING THE LOGIC-BUFFER-F PWB (Fig.3) · Remove the PDP UNIT. (1) Disconnect the connector [CN402] / [CN807] / [CN2600] / [CN2601] / [CN2602] / [CN2603] / [CN2604] / [CN2605] / [CN2606] / [CN2607] / [FE1] from the LOGIC-BUFFER-F PWB . (2) Remove the 14 screws [b], then remove the LOGIC-BUFFER-F PWB. 3.1.16.3 REMOVING THE X-MAIN PWB (Fig.3.) · Remove the PDP UNIT. (1) Disconnect the connector [CN4001] / [CN4002] / [CN4003] / [CN4004] / [CN4005] from the X-MAIN PWB . (2) Remove the 8 screws [c], then remove the X-MAIN PWB.
d c LOGIC-BUFFER-E PWB a X-MAIN PWB b b LOGIC-BUFFER-F PWB e f LOGIC-BUFFER-F PWB LOGIC-MAIN PWB Y-BUFFER-U PWB g a Y-MAIN PWB LOGIC-BUFFER-E PWB Y-BUFFER-L PWB
3.1.16.7 REMOVING THE Y-BUFFER-L PWB (Fig.3) · Remove the PDP UNIT. (1) Disconnect the connector [CN5501] / [CN5502] / [CN5503] / [CN5504] / [CN5505] / [CN5507] from the Y-BUFFER-L PWB. (2) Remove the 3 screws [g], then remove the Y-BUFFER-L PWB.
Fig.3
(No.YA100)1-15
3.1.17 REMOVING THE FRONT FILTER (Fig.4.) · Remove the REAR COVER. · Remove the CHASSIS SHIELD BRACKET. · Remove the TERMINAL COVER. · Remove the CHASSIS BASE (with each PWB affixed on the CHASSIS BASE). · Remove the TEMP. SENSOR. · Remove the MAIN POWER PWB. · Remove the SUB POWER PWB. · Remove the PDP UNIT. (1) Remove the 12 screws [h], then remove the GLASS HOLDER. (2) Remove the FRONT FILTER with enough care not to damage it.
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h j i k i j GLASS HOLDER SIDE FRAME BRACKET j TOP FRAME BRACKET j i h i BOTTOM FRAME BRACKET k SIDE FRAME BRACKET FRONT FILTER TOP FRONT PANEL
3.1.18 REMOVING THE TOP FRAME BRACKET, BOTTOM FRAME BRACKET AND SIDE FRAME BRACKET (Fig.4.) · Remove the REAR COVER. · Remove the CHASSIS SHIELD BRACKET. · Remove the TERMINAL COVER. · Remove the CHASSIS BASE (with each PWB affixed on the CHASSIS BASE). · Remove the TEMP. SENSOR. · Remove the MAIN POWER PWB. · Remove the SUB POWER PWB. · Remove the PDP UNIT. · Remove the FRONT FILTER. (1) Remove the 6 screws [i], then remove the FRONT PANEL. (2) Remove the 4 spacers [j], the 4 screws [k], then remove the TOP FLAME BRACKET, BOTTOM FLAME BRACKET and SIDE FLAME BRACKET.
Fig.4 1-16 (No.YA100)
3.2
DISASSEMBLY PROCEDURE [DISPLAY UNIT: PD-50X795]
NOTE: · When exchanging parts etc. with the front side (PDP side) fancing down, place a protection sheet under the DISPALY UNIT to prevent scratches on the front side. · It is advisable to take notes of the connecting locations (connector numbers) of the removed connectors.
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3.2.1 REMOVING THE REAR COVER (Fig.5) (1) Remove the power cord and the system cable. (2) Remove the 11 screws [A] and the 22 screws [B], then remove the REAR COVER. 3.2.2 REMOVING THE BACK COVER AND SPEAKER HOLDER (Fig.5) (1) Remove the 8 screws [C], then remove the BACK COVER. (2) Remove the SPEAKER HOLDER. 3.2.3 REMOVING THE TERMINAL COVER (Fig.5) · Remove the REAR COVER. (1) Remove the 6 screws [D], then remove the CHASSIS SHIELD BRACKET. (2) Remove the 2 screws [E] and the 5 screws [F], then remove the TERMINAL COVER. 3.2.4 REMOVING THE LINE FILTER PWB (Fig.5) · Remove the REAR COVER. · Remove the CHASSIS SHIELD BRACKET. · Remove the TERMINAL COVER. (1) Remove the 2 claws [G], then remove the LINE FILTER INSULATOR. (2) Disconnect the connector [CN8001] from the MAIN POWER UNIT. (3) Remove the 2 screws [H] and 2 screws [I], then remove the LINE FILTER PWB. 3.2.5 REMOVING THE AUDIO PWB (Fig.5.) · Remove the REAR COVER. · Remove the CHASSIS SHIELD BRACKET. · Remove the TERMINAL COVER. (1) Disconnect the connector [CN60SL] / [CN60CB] / [CN60SR] from the AUDIO PWB . (2) Disconnect the connector [CN9001] from the SUB POWER PWB. (3) Disconnect the connector [CN00A] / [CN00C] / [CN00D] from the DISPLAY INTERFACE PWB. (4) Remove the 4 screws [J], then remove the AUDIO PWB.
3.2.6 REMOVING THE DISPLAY INTERFACE PWB (Fig.5) · Remove the REAR COVER. · Remove the CHASSIS SHIELD BRACKET. · Remove the TERMINAL COVER. (1) Disconnect the connector [CN00A] / [CN00C] / [CN00D] / [CN00E] / [CN00G] / [CN00Q] / [CN00T] / [CN00X] / [CN00V] / [CN0FL] / [CN0FR] / [CN601] / [CNAH1] from the DISPLAY INTERFACE PWB . (2) Remove the 3 screws [K], the 2 screws [L] and 2 screws [M] , then remove the DISPLAY INTERFACE PWB.
3.2.7 REMOVING THE CHASSIS BASE (Fig.5) · Remove the REAR COVER. · Remove the CHASSIS SHIELD BRACKET. · Remove the TERMINAL COVER. · Remove the LINE FILTER PWB. · Remove the AUDIO PWB. · Remove the DISPLAY INTERFACE PWB. (1) Remove the 2 screws [N], then remove the CHASSIS BASE.
(No.YA100)1-17
BACK COVER C
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B A A REAR COVER C G INSULATOR DISPLAY INTERFACE PWB K J AUDIO PWB I H I BACK COVER CHASSIS SHIELD BRACKET D LINE FILTER PWB N TERMINAL COVER E F E F N F F M L CHASSIS BASE TOP SPEAKER HOLDER SPEAKER HOLDER
Fig.5 1-18 (No.YA100)
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3.2.9 REMOVING THE MAIN POWER UNIT (Fig.6) · Remove the REAR COVER. (1) Disconnect the connector [CN805] / [CN806] / [CN8001] / [CN8009] / [CN8011] / [CN9001] from the MAIN POWER UNIT . (2) Remove the 8 screws [P], then remove the MAIN POWER UNIT. 3.2.10 REMOVING THE SUB POWER PWB (Fig.6) · Remove the REAR COVER. (1) Disconnect the connector [CN9001] / [CN9002] / [CN9005] from the SUB POWER PWB . (2) Remove the 4 screws [Q], then remove the SUB POWER PWB. 3.2.11 REMOVING THE COOLING FAN (Fig.6) · Remove the REAR COVER. (1) Disconnect the connector [CN0FL] / [CN0FR] from the DISPLAY INTERFACE PWB . (2) Remove the 4 screws [R], then remove the COOLING FAN BRACKET by lifting upward. (3) Remove the 4 screws [S], then remove the COOLING FAN by pulling in hte arrowed direction. 3.2.12 REMOVING THE POWER CHASSIS BASE (Fig.6) · Remove the REAR COVER. · Remove the MAIN POWER UNIT. · Remove the SUB POWER PWB. · Remove the COOLING FAN. (1) Remove the 5 screws [T], then remove the POWER CHASSIS BASE. 3.2.13 REMOVING THE DISPLAY SWITCH PWB (Fig.6) · Remove the BACK COVER. · Remove the SPEAKER HOLDER. (1) Remove the 2 screws [U] and the 3 screws [V], then remove the DISPLAY SWITCH PWB and CONTROL KNOB. (2) Disconnect the connector [CN000T] from the DISPLAY SWITCH PWB .
3.2.8 REMOVING THE TEMP. SENSOR PWB (Fig.6) · Remove the REAR COVER. (1) Disconnect the connector [CN800V] from the TEMP. SENSOR PWB PWB . (2) Remove the 1 screw [O], then remove the TEMP. SENSOR PWB.
3.2.14 REMOVING THE DISPLAY LED PWB (Fig.6) · Remove the BACK COVER. · Remove the SPEAKER HOLDER. · Remove the DISPLAY SWITCH PWB. (1) Remove the 2 screws [W], then remove the DISPLAY LED PWB. (2) Disconnect the connector [CN000X] from the DISPLAY LED PWB .
3.2.15 REMOVING THE DD SPEAKER (Fig.6) · Remove the REAR COVER. · Remove the BACK COVER. · Remove the SPEAKER HOLDER. (1) Disconnect the connector [CN60SR] / [CN60SL] from the AUDIO PWB . (2) Remove the 4 screws [X], then remove the DD SPEAKER.
3.2.16 REMOVING THE WOOFER SPEAKER (Fig.6) · Remove the REAR COVER. (1) Disconnect the connector [CN60CB] from the AUDIO PWB. (2) Remove the 6 screws [Y], then remove the WOOFER SPEAKER UNIT. (3) Remove the 8 screws [Z], then remove the DUCT COVER. (4) Remove the 10 screws [a] and the 4 screws [b], then remove the WOOFER BACK COVER. (5) Remove the 8 screws [c], then remove the WOOFER SPEAKER.
3.2.17 REMOVING THE PDP (PANEL) UNIT (Fig.6) · Remove the REAR COVER. · Remove the CHASSIS SHIELD BRACKET. · Remove the TERMINAL COVER. · Remove the CHASSIS BASE (with each PWB affixed on the CHASSIS BASE). · Remove the POWER CHASSIS BASE (with each PWB affixed on the CHASSIS BASE). · Remove the TEMP. SENSOR. (1) Remove the 16 screws [d], then remove the BACK BRACKET. (2) Remove the 4 screws [e] then Lift the PDP straight upward and remove it with extra attention no to impose any shock to the PDP. CAUTION: · More than two people are required to remove the PDP unit. · The gas pouring port is covered with the protection material. Durring the operation, be careful not to damage the gas pouring port. · Do not touch the front side (glass) of the PDP with your fingers.
(No.YA100)1-19
P
Q SUB POWER PWB R FAN BRACKET FAN
MAIN POWER UNIT R FAN BRACKET
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COOLING FAN S INSULATOR S T d d T d d d CHASSIS BASE e d d d TEMP. SENSOR PWB O BACK BRACKET BACK BRACKET e PDP UNIT e
GAS insertion hole
X
DD SPEAKER
e
X
DD SPEAKER
W
a
DISPLAY SWITCH INSULATOR PWB U V
DISPLAY LED PWB
Z DUCT COVER
b
CONTROL KNOB
DUCT COVER a
b
c
WOOFER BACK COVER
Y
c
WOOFER SPEAKER WOOFER SPEAKER
TOP
Fig.6 1-20 (No.YA100)
3.2.18 REMOVING THE PWB IN PDP UNIT 3.2.18.1 REMOVING THE X-LEFT-TOP PWB (Fig.7) · Remove the PDP UNIT. (1) Disconnect the connector [P4] / [P5] / [P501] / [P502] / [P503] / [P504] from the X-LEFT TOP PWB . (2) Remove the 2 screws [f] and the 1 screw [g], then remove the X-LEFT-TOP PWB. 3.2.18.8 REMOVING THE Y-SUS PWB (Fig.7) · Remove the PDP UNIT. (1) Disconnect the connectors [P2] / [P3] / [P4] / [P5] / [P6] / [P7] / [P8] / [P9] / [P10] / [P11] from the Y-SUS PWB . (2) Remove the 8 screws [o], then remove the Y-SUS PWB.
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3.2.18.2 REMOVING THE X-CENTER-TOP PWB (Fig.7) · Remove the PDP UNIT. (1) Disconnect the connector [P5] / [P6] / [P10] / [P100] / [P505] / [P506] / [P507] / [P508] from the X-CENTER TOP PWB . (2) Remove the 1 screw [f] and the 2 screws [h], then remove the X-CENTER-TOP PWB. 3.2.18.3 REMOVING THE X-RIGHT-TOP PWB (Fig.7) · Remove the PDP UNIT. (1) Disconnect the connectors [P1] / [P4] / [P5] / [P6] / [P509] / [P510] / [P511] from the X-RIGHT TOP PWB . (2) Remove the 2 screws [i], then remove the X-RIGHT-TOP PWB. 3.2.18.4 REMOVING THE Z-SUS PWB (Fig.7) · Remove the PDP UNIT. (1) Disconnect the connectors [P1] / [P2] / [P3] / [P5] / [P6] / [P9] / [P12] from the Z-SUS PWB . (2) Remove the 9 screws [j], then remove the Z-SUS PWB. 3.2.18.5 REMOVING THE DC/DC PWB (Fig.7) · Remove the PDP UNIT. (1) Disconnect the connectors [P21] / [P22] / [P23] / [P24] / [P25] / [P26] from the DC/DC PWB . (2) Remove the 4 screws [k], then remove the DC/DC PWB. 3.2.18.6 REMOVING THE LVDS CONTROL PWB (Fig.7) · Remove the PDP UNIT. (1) Disconnect the connectors [P2] / [P3] / [P101] / [P102] / [P103] / [P104] / [P105] / [P106] / [P200] / [P201] / [P300] from the LVDS CONTROL PWB . (2) Remove the 4 screws [m], then remove the LVDS CONTROL PWB. 3.2.18.7 REMOVING THE TEMP. SENSOR PWB (Fig.7) · Remove the PDP UNIT. (1) Disconnect the connectors [P3] from the LVDS CONTROL PWB. (2) Remove the 2 screws [n], then remove the TEMP. SENSOR PWB.
h i X-CENTERTOP PWB g m X-RIGHTTOP PWB j DC/DC PWB o k Z-SUS PWB r f X-RIGHTBOTTOM PWB X-LEFTTOP PWB s X-CENTERBOTTOM PWB Y-DRIVERUPPER PWB t p n LVDS CONTROL PWB Y-SUS PWB q TEMP SENSOR PWB u Y-DRIVERLOWER PWB X-LEFTBOTTOM PWB
3.2.18.9 REMOVING THE Y-DRIVE-UPPER PWB (Fig.7) · Remove the PDP UNIT. (1) Disconnect the connectors [P9] / [P10] from the Y-SUB PWB . (2) Disconnect the connector [P7] / [P8] / [P9] / [P10] / [P12] / [P13] from the Y-DRIVE UPPER PWB . (3) Remove the 2 screws [p], then remove the Y-DRIVEUPPER PWB. 3.2.18.10 REMOVING THE Y-DRIVE-LOWER PWB (Fig.7) · Remove the PDP UNIT. (1) Disconnect the connector [P2] / [P10] from the Y-SUB PWB . (2) Disconnect the connector [P1] / [P2] / [P3] / [P4] / [P5] / [P11] from the Y-DRIVE LOWER PWB . (3) Remove the 2 screws [q], then remove the Y-DRIVELOWER PWB. 3.2.18.11 REMOVING THE X-RIGHT-BOTTOM PWB (Fig.7) · Remove the PDP UNIT. (1) Disconnect the connector [P2] / [P3] /[P7] / [P401] / [P402] / [P403] from the X-RIGHT BOTTOM PWB . (2) Remove the 2 screws [r], then remove the X-RIGHTBOTTOM PWB.
3.2.18.12 REMOVING THE X-CENTER-BOTTOM PWB (Fig.7) · Remove the PDP UNIT. (1) Disconnect the connectors [P1] / [P4] / [P7] / [P405] / [P406] / [P407] / [P408] / [P425] from the X-CENTER BOTTOM PWB. (2) Remove the 2 screws [s] and the 1screw [t], then remove the X-CENTER-BOTTOM PWB. 3.2.18.13 REMOVING THE X-LEFT-BOTTOM PWB (Fig.7) · Remove the PDP UNIT. (1) Disconnect the connectors [P1] / [P2] / [P401] / [P402] / [P403] / [P404] from the X-LEFT-BOTTOM PWB . (2) Remove the 1 screw [t] and the 2 screws [u], then remove the X-LEFT BOTTOM PWB.
Fig.7 (No.YA100)1-21
3.2.19 REMOVING THE FRONT FILTER (Fig.8) · Remove the REAR COVER. · Remove the CHASSIS SHIELD BRACKET. · Remove the TERMINAL COVER. · Remove the CHASSIS BASE (with each PWB affixed on the CHASSIS BASE). · Remove the POWER CHASSIS BASE (with each PWB affixed on the CHASSIS BASE). · Remove the TEMP. SENSOR. · Remove the PDP UNIT. (1) Remove the 12 screws [v], then remove the GLASS HOLDER. (2) Remove the FRONT FILTER with enough care not to damage it.
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x v w y w x x SIDE FRAME BRACKET SPACER TOP FRAME BRACKET w v GLASS HOLDER w x BOTTOM FRAME BRACKET y SIDE FRAME BRACKET FRONT FILTER TOP FRONT PANEL
3.2.20 REMOVING THE TOP FRAME BRACKET, BOTTOM FRAME BRACKET AND SIDE FRAME BRACKET (Fig.8) · Remove the REAR COVER. · Remove the CHASSIS SHIELD BRACKET. · Remove the TERMINAL COVER. · Remove the CHASSIS BASE (with each PWB affixed on the CHASSIS BASE). · Remove the POWER CHASSIS BASE (with each PWB affixed on the CHASSIS BASE). · Remove the TEMP. SENSOR. · Remove the PDP UNIT. · Remove the FRONT FILTER. (1) Remove the 6 screws [w], then remove the FRONT PANEL. (2) Remove the 8 screws [x], then remove the SPACER. (3) Remove the 4 screws [y], then remove the TOP FLAME BRACKET, BOTTOM FLAME BRACKET and SIDE FLAME BRACKET.
Fig.8
1-22 (No.YA100)
3.3
DISASSEMBLY PROCEDURE [RECEIVER UNIT]
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3.3.1 REMOVING THE TOP COVER (1) Remove the 9 screws [A] then remove the TOP COVER. 3.3.2 REMOVING THE FRONT PANEL · Remove the TOP COVER. (1) Remove the 1 screw [B] and the 1 screw [C]. (2) Remove the 3 claws [D] and the 2 claws [E]. (3) Remove the FRONT PANEL toward you. 3.3.3 REMOVING THE FRONT CONTROL PWB · Remove the TOP COVER. · Remove the FRONT PANEL. (1) Remove the [CN800F] connector on the ANALOG SIGNAL PWB. (2) Remove the 4 screws [F], then remove the FRONT CONTROL PWB. 3.3.4 REMOVING THE REAR COVER · Remove the TOP COVER. (1) Remove the 12 screws [G], the 2 nats [H], the 2 washers [J], the 2 screws [K], the 2 screws [L], the 2 screws [M] and the 1 screw [N]. (2) Remove the REAR COVER toward you. 3.3.5 REMOVING THE COOLING FAN · Remove the TOP COVER. (1) Remove the [CN00Q] connector on the SYSTEM POWER PWB. (2) Remove the 2 screws [O], then remove the FAN BRACKET. (3) Remove the 1 screw [P], then remove the COOLING FAN. 3.3.6 REMOVING THE ATSC TUNER MODULE · Remove the TOP COVER. · Remove the REAR COVER. (1) Remove the [CN1302] / [CN1502] / [CN9601] connector on the ATSC TUNER MODULE. (2) Remove the 5 screws [Q], then remove the ATSC TUNER MODULE. 3.3.7 REMOVING THE SD CARD PWB · Remove the TOP COVER. · Remove the FRONT PANEL. · Remove the COOLING FAN. (1) Remove the [CN1001] connectors on the SD CARD PWB. (2) Remove the 3 screws [R], then remove the SD CARD PWB. 3.3.8 REMOVING THE RECEIVER PWB · Remove the TOP COVER. · Remove the REAR COVER. (1) Remove the [CN00A] / [CN00T] connectors on the RECEIVER PWB. (2) Remove the RECEIVER PWB.
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. 3.3.9 REMOVING THE REAR JACK PWB · Remove the TOP COVER. · Remove the REAR COVER. (1) Remove the [CNJ0J1] / [CNJ0J2] connectors on the ANLOG SIGNAL PWB. (2) Remove the 2 screws [S], then remove the REAR JACK PWB.
3.3.10 REMOVING THE DIGITAL SIGNAL PWB · Remove the TOP COVER. · Remove the REAR COVER. · Remove the ATSC TUNER UNIT. (1) Remove the [CN001] / [CN002] connectors on the ANLOG SIGNAL PWB. (2) Remove the [CN003] connector on the REGULATOR PWB. (3) Remove the 4 screws [T], then remove the DIGITAL HOLDER. (4) Remove the 3 screws [U], then remove the DIGITAL SIGNAL PWB. 3.3.11 REMOVING THE REGULATOR PWB · Remove the TOP COVER. · Remove the FRONT PANEL. · Remove the COOLING FAN. · Remove the SD CARD2 PWB. (1) Remove the [CN003] / [CN008] / [CN00D] connector on the REGULATOR PWB. (2) Remove the 4 screws [V], then remove the REGULATOR PWB.
3.3.12 REMOVING THE SYSTEM POWER PWB · Remove the TOP COVER. (1) Remove the [CN00G] connector on the ANLOG SIGNAL PWB. (2) Remove the [CN008] connector on the REGULATOR PWB. (3) Remove the [CN9601] connector on the ATSC TUNER UNIT. (4) Remove the [CN00Q] / [CN0PW] connector on the SYSTEM POWER PWB. (5) Remove the 7 screws [W], then remove the SYSTEM POWER PWB. 3.3.13 REMOVING THE ANALOG SIGNAL PWB · Remove the TOP COVER. · Remove the REAR COVER. · Remove the RECEIVER PWB. (1) Remove the [CN001] / [CN002] / [CN00D] / [CN00F] / [CN00G] / [CNJ0J1] / [CNJ0J2] connector on the ANALOG SIGNAL PWB. (2) Remove the 2 screws [X], then remove the ANALOG SIGNAL PWB.
(No.YA100)1-23
TOP COVER
A Q
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ATSC TUNER MODULE a T A b DIGITAL HOLDER A P T O COOLING FAN DIGITAL SIGNAL PWB c R X FAN BRACKET W d X e U V C D SD CARD PWB REGULATOR PWB FRONT PANEL B E SYSTEM POWER PWB F INSULATOR f REAR JACK PWB D e d E FRONT CONTROL PWB c BOTTOM CASE S CHASSIS BASE N BACK COVER f a G G H I J M b L K H M
RECEIVER PWB
ANALOG SIGNAL PWB
Fig.9
1-24 (No.YA100)
3.4
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.
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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. 3.4.2 SERVICE MODE SETTING SERVICE MODE SCREEN SETTING ITEM
3.4.1 MEMORY IC REPLACEMENT PROCEDURE
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.
MAIN MENU SCREEN
Setting items
Settings Adjust Fixed Adjust Fixed
Item No.
SERVICE MENU 1.ADJUST 2.SELF_CHK 3.I2C STOP
Video system setting Audio system setting Drive system setting
S001 - S039 T001 - T010
Panel control system setting Main cpu system setting
P001 - P010 Z001 - Z010
D001 - D187
Fixed
ADJUSTMENT MODE SCREEN
S001 PREPARE 000 NTSC3 1409 DYN H
Fig.1
(No.YA100)1-25
3.4.3 SETTINGS OF FACTORY SHIPMENT 3.4.3.1 POWER CHANNEL VOLUME INPUT BUTTON OPERATION [DISPLAY UNIT] Setting item Off CABLE-02 TV 10 Setting position 3.4.3.2 REMOTE CONTROL DIRECT OPERATION Setting item INPUT CHANNEL VOLUME MUTING DISPLAY ASPECT Setting position TV CABLE-02 10 OFF OFF NTSC PANORAMA HD FULL MULTI SCREEN 1 SCREEN SLEEP TIMER OFF CLOSED CAPTION OFF THEATER PRO OFF NATURAL CINEMA AUTO VIDEO STATUS DYNAMIC MTS STEREO SOUND A.H.S OFF EFFECT BBE ON SMART SOUND OFF A.H.B ON
3.4.3.3
1. PICTURE ADJUST Customers can adjust the picture setting of menu screen as their own like but the picture standard value during factory shipment is as below. < NTSC MODE > Setting item DYNAMIC STANDARD GAME PICTURE +12 00 -05 BRIGHT 00 00 00 COLOR +08 00 -03 TINT 00 00 -05 DETAIL +05 00 -03 COLOR TEMPERATURE HIGH LOW HIGH DIG. NOISE CLEAR OFF OFF OFF NATURAL CINEMA AUTO AUTO AUTO COLOR MANAGEMENT ON ON ON DYNAMIC GAMMA ON ON ON DYNAMIC STANDARD GAME Setting item PICTURE +12 00 -05 BRIGHT 00 00 00 COLOR +08 00 -03 TINT 00 00 00 DETAIL +05 00 -03 COLOR TEMPERATURE HIGH LOW HIGH DIG. NOISE CLEAR OFF OFF OFF NATURAL CINEMA AUTO AUTO AUTO COLOR MANAGEMENT ON ON ON DYNAMIC GAMMA ON ON ON THEATER 00 00 00 00 00 HIGH OFF AUTO ON ON THEATER 00 00 00 00 00 LOW OFF AUTO ON ON
< HD MODE >
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REMOTE CONTROL MENU OPERATION 2. SOUND ADJUST Setting item BASS TREBLE BALANCE MTS Setting position 00 00 00 STEREO 3. CLOCK / TIMERS Setting item ON / OFF TIMER Setting position OFF 4. INITIAL SETUP Setting item VIDEO-1 MONITOR OUT TV SPEAKER AUDIO OUT DIGITAL-IN DIGITAL-IN AUDIO CENTER CH INPUT NOISE MUTING FRONT PANEL LOCK V1 SMART INPUT VIDEO INPUT LABEL POSITION ADJUSTMENT POWER INDICATOR LANGUAGE CLOSED CAPTION AUTO SHUT OFF XDS ID V-CHIP AUTO DEMO Setting position OFF ON FIX SIZE 1 DIGITAL OFF ON OFF OFF All blank Center HIGH ENG. OFF OFF ON OFF OFF
1-26 (No.YA100)
3.5
REPLACEMENT OF CHIP COMPONENT
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3.5.2 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. 3.5.3 REPLACEMENT STEPS 1. How to remove Chip parts [Resistors, capacitors, etc.] 2. How to install 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) 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
3.5.1 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.
(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.
(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.YA100)1-27
SECTION 4 ADJUSTMENT
4.1 ADJUSTMENT PREPARATION 4.4 ADJUSTMENT ITEMS
4.2
Unless otherwise specified in the adjustment items, preset the following functions with the REMOTE CONTROL UNIT. Setting item Settings VIDEO STATUS STANDARD LOW
4.3
· Oscilloscope · Signal generator (Pattern generator) [NTSC / 525i / 1125i] · TV audio multiplex signal generator · Remote control unit
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POWER CIRCUIT [DISPLAY UNIT: PD-50X795] · PDP POWER VOLTAGE adjustment VIDEO CIRCUIT [RECEIVER UNIT] · 525i A-D OFFSET adjustment · 1125i BRIGHTNESS adjustment · 1125i A-D OFFSET adjustment · SUB SCREEN A-D OFFSET adjustment · WHITE BALANCE (HIGHLIGHT) adjustment MTS CIRCUIT [RECEIVER UNIT] · MTS INPUT LEVEL adjustment · MTS SEPARATION adjustment 4.5 BASIC OPERATION OF SERVICE MODE PRESET SETTING BEFORE ADJUSTMENTS BRIGHT / CONTRAST / COLOR / TINT 00 COLOR TEMPERATURE DIG. NOISE CLEAR DYNAMIC GAMMA COLOR MANAGEMENT NATURAL CINEMA BBE OFF ON ON AUTO TREBLE / BASS / BALANCE A.H.S A.H.B MTS 00
(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.
POWER CIRCUIT [DISPLAY UNIT: PD-42X795] · PDP POWER VOLTAGE adjustment
4.5.1 HOW TO ENTER THE SERVICE MODE (1) Set to 0 minutes using the [SLEEP TIMER] key. (2) Press the [VIDEO STATUS] key and [DISPLAY] key simultaneously, then enter the SERVICE MODE. (3) When the MAIN MENU SCREEN is displayed, press [1] key to enter the adjustment mode. NOTE: · Before entering the SERVICE MODE, confirm that the setting of TV / CATV switch of the REMOTE CONTROL UNIT is at the "TV" side and the setting of VCR / DVD switch is at the "VCR" 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 MAIN MENU 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.
MAIN MENU SCREEN
ON
OFF
SERVICE MENU 1.ADJUST 2.SELF_CHK 3.I2C STOP
ON
STEREO OFF
SMART SOUND AUDIO OUT ASPECT
FIX
FULL
ADJUSTMENT MODE SCREEN
S001 PREPARE 000 NTSC3 1409 DYN H
MEASURING INSTRUMENT AND FIXTURES
4.5.2 HOW TO EXIT THE SERVICE MODE Press the [ MENU ] key to exit the Service mode.
1-28 (No.YA100)
4.5.3 DESCRIPTION OF STATUS DISPLAY
SETTINGITEM No. SETTING ITEM SETTING VALUE (DATA) COLOR TEMP.
Setting item numbers are displayed. For the setting item names to be displayed, refer to "Initial setting value of adjustment mode". (7) SETTING VALUE (DATA) The SETTING VALUE is displayed.
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SELECTION OF SETTING ITEM · [CHANNEL (+/-)] key. For scrolling up / down the setting items.
SIGNAL SYSTEM SCREEN MODE VIDEO STATUS
S001 PREPARE 000 NTSC3 1409 DYN H
4.5.4 CHANGE AND MEMORY OF SETTING VALUE
S001... T001... P001... D001... Z001...
(1) SIGNAL SYSTEM The signal displayed on the screen is displayed. NTSC3 525I 525P 1125I6 750P H525I H525P H125I6 H750P PCVGA PCXGA : 525i (Composite / S-video input) : 525i (Component input) : 525p : 1125i : 750p : HDMI 525i : HDMI 525p : HDMI 1125i : HDMI 750p : PC (VGA) : PC (XGA)
· [SLEEP TIMER] key. For switching to next items.
S001 T001 P001 D001 Z001
CHANGE OF SETTING VALUE (DATA) · [VOLUME (+/-)] 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
VCR/DVD switch POWER
(2) SCREEN MODE State of the SCREEN SIZE or MULTI PICTURE is displayed. SINGLE SCREEN 1409 1609 1609S FULL M12 FRZ STD : FULL : PANORAMA, HD PANORAMA : CINEMA, CINEMA ZOOM : REGULAR : FREEZE screen : TWIN screen : INDEX screen : STANDARD : DYNAMIC : THEATER : GAME
TV/CATV switch
SLEEP TIMER DISPLAY
NUMBER
MULTI SCREEN
VIDEO STATUS
CHANNEL + VOLUME + BACK
MUTING
(3) VIDEO STATUS STD DYN TH GAME H M
VOLUME -
MENU
CHANNEL -
(4) COLOR TEMP.
: HIGH : LOW
(5) SETTING ITEM NAME Setting item name are displayed. The setting item numbers to be displayed are listed below. Item No. S001 - S039 T001 - T010 P001 - P010 D001 - D187 Z001 - Z010 Setting item Video system setting Audio system setting Panel control system setting Drive system setting Main CPU system setting
(6) SETTING ITEM NO. (No.YA100)1-29
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