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SERVICE MANUAL
PDP COLOUR TELEVISION
PD-35B50BJ, PD-35B50BU PD-42B50BJ, PD-42B50BU
BASIC CHASSIS
FP2
TABLE OF CONTENTS
1 2 3 4 5 PRECAUTION ......................................................................................................................................................... 1-4 SPECIFIC SERVICE INSTRUCTIONS ...................................................................................................................... 1-8 DISASSEMBLY ..................................................................................................................................................... 1-16 ADJUSTMENT ...................................................................................................................................................... 1-33 TROUBLESHOOTING ........................................................................................................................................... 1-48 COPYRIGHT © 2004 Victor Company of Japan, Limited
No.YA098 2004/6
SPECIFICATION
Contents Items Dimensions (W x H x D) Mass TV RF System Colour System PD-42B50BJ PD-42B50BU PD-35B50BJ PD-35B50BU
104.5cm x 72.9cm x 11.0cm 90.7cm x 63.4cm x 11.7cm 38.3kg 30.4kg CCIR B / G, I, D / K, L RF PAL / SECAM EXT PAL / SECAM / NTSC3.58 / NTSC4.43 Stereo System A2 (B / G, D / K), NICAM (B / G, I, D / K, L) Teletext System FLOF (Fastext), TOP, WST (World Standard System) Receiving Frequency VHF 47MHz ~ 470MHz UHF 470MHz ~ 862MHz CATV 116MHz ~ 172MHz, 220MHz ~ 469MHz Intermediate Frequency VIF 38.9MHz (B / G, I, D / K, L) SIF 33.4MHz (5.5MHz: B / G) / 32.9MHz (6.0MHz: I) / 32.4MHz (6.5MHz: D / K) / 40.45MHz (6.5MHz :L) Colour Sub Carrier Frequency PAL : 4.43MHz SECAM : 4.40MHz / 4.25MHz NTSC : 3.58MHz / 4.43MHz Power Input AC110V ~ AC240V, 50Hz Power Consumption Operate : 303W, Stand by: 3.0W Operate : 244W, Stand by : 3.0W Plasma Display Panel (PDP) QLE0028-001 QLE0021-002 42V wide aspect (16:9) 35V wide aspect (16:9) Screen Size Visible size : 107.5cm (Diagonel) / Visible size : 91.0cm (Diagonel) / 93.3 cm x 53.3 cm (H x V) 78.6 cm x 44.2 cm (H x V) Display Pixels H: 852 pixels / V: 480 pixels H: 853 pixels / V: 480 pixels [W-VGA] [W-VGA] Speaker 6.6cm round x4 Audio Power Output 10W + 10W (Oblique cone) Aerial Input Teminal 75 unbalanced, coaxial External EXT-1 (Input/Output) 21 pin Euro connector (SCART socket) terminal · Video input, S-video (Y / C) input, Audio L / R inputs and RGB inputs are available. · TV broadcast outputs (Video and Audio L / R) are available. EXT-2 (Input/Output) 21 pin Euro connector (SCART socket) · Video input, S-video (Y / C) input, Audio L / R inputs and RGB inputs are available. · Video and Audio L / R outputs are available. · T-V LINK functions are available. EXT-3 (Input) 21 pin Euro connector (SCART socket) · Video input and Audio L / R inputs are available. EXT-4 (Input) COMPONENT VIDEO RCA pin jack x 3 1125i / 750p Y : 1V(p-p), Sync ±0.35V(p-p) terminal x3, 75 Pb/Pr : ±0.35V(p-p), 75 525i / 525p / 625i / 625p Y : 1V(p-p), Positive (Negative sync prorided), 75 Cb/Cr : 0.7V(p-p), 75 AUDIO 500mV (rms), High impedance, RCA pin jack x 2 EXT-5 (Input) S-VIDEO Mini-DIN 4 pin x 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 x 1 AUDIO 500mV (rms), Low impedance, RCA pin jack x 2 AUDIO OUTPUT (Fixed) 500mV (rms), Low impedance, RCA pin jack x 2 Subwoofur OUTPUT 500mV (rms), Low impedance, RCA pin jack x 1 CENTRE CH INPUT 500mV (rms), Low impedance, RCA pin jack x 1 PC (RGB) INPUT D-sub 15pin x 1 R/G/B : 0.7V (p-p), 75 HD / VD : 1V (p-p) ~ 5V (p-p), High impedance Available signal VGA : 640 pixels x 480 pixels (Horizontal : 31.5kHz / Vertical : 60Hz) Headphone 3.5mm Stereo mini jack x 1 Remote Control Unit RM-C1811H (AA/R6 TYPE battery x 2) Design & specifications are subject to change without notice. 1-2 (No.YA098)
21-pin Euro connector (SCART) : EXT-1/EXT-2/EXT-3 PinNo. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Signal designation AUDIO R output AUDIO R input AUDIO L output AUDIO GND GND (B) AUDIO L input B input FUNCTION SW (SLOW SW) GND (G) SCL / T-V LINK G input SDA GND (R) GND (YS) R / C input Ys input (FAST SW) GND (VIDEO output) GND (VIDEO input) VIDEO output VIDEO / Y input COMMON GND Matching value 500mV(rms) (Nominal), Low impedance 500mV(rms) (Nominal), High impedance 500mV(rms) (Nominal), Low impedance EXT-1 Used (TV OUT) Used Used (TV OUT) Used Used Used Used Used Used Not used 700mV(B-W), 75 Used Not used Used Used Used (C1/R) Used EXT-2 EXT-3 Used (LINE OUT) Not used Used Used
Used (LINE OUT) Not used Used Used Used Used Used Used Used (SCL2/TV-LINK) Used Used(SDA2) Used Not used Used (C2/R) Used Used Used Used Not used Used Used Not used Not used Not used Used Not used Not used Not used
500mV(rms) (Nominal), High impedance 700mV(B-W), 75 Low : 0V-3V, High : 8V-12V, High impedance
R : 700mV(B-W), 75 C : 300mV(p-p), 75 Low : 0V-0.4V High : 1V-3V, 75
Used Used 1V(p-p) (Negative going sync), Used (TV OUT) 75 1V(p-p) (Negative going sync), Used 75 Used
Used Used Used Used Used (LINE OUT) Not used Used Used Used Used
(P-P= Peak to Peak, B-W= Blanking to white peak)
[Pin assignment]
20 18 16 14 12 10 8 6 4 2
21
19 17
15
13
11
9
7
5
3
1
(No.YA098) 1-3
SECTION 1 PRECAUTION
1.1 SAFETY PRECAUTIONS [EXCEPT FOR UK] (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 ) side GND and GND, the ISOLATED (NEUTRAL) : ( 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 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.). Alternative 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 ohms 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)
0.15µF AC-TYPE PLACE THIS PROBE ON EACH EXPOSED METAL PART
1500 10W GOOD EARTH GROUND
1-4 (No.YA098)
1.2 SAFETY PRECAUTIONS [FOR UK] (1) The design of this product contains special hardware and many circuits and components specially designed for safety purposes. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Service should be performed by qualified personnel only. (2) Alterations of the design or circuitry of the product should not be made. Any design alterations or additions will void the manufacturer's warranty and may result in personal injury or property damage resulting therefrom. (3) Many electrical and mechanical parts in the product have special safety-related characteristics. These characteristics are often not evident from visual inspection nor can the protection afforded by them necessary be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in the Parts List of Service Manual. Electrical components having such features are identified by shading on the schematics and by ( ) on the Parts List in the Service Manual. The use of a substitute replacement which does not have the same safety characteristics as the recommended replacement part shown in the Parts List of Service Manual may cause shock, fire, or other hazards. (4) The leads in the products are routed and dressed with ties, clamps, tubings, barriers and the like to be separated from live parts, high temperature parts, moving parts and / or sharp edges for the prevention of electric shock and fire hazard. When service is required, the original lead routing and dress should be observed, and it should be confirmed that they have been returned to normal, after re-assembling. WARNING (1) (2) (3) (4) (5) The equipment has been designed and manufactured to meet international safety standards. It is the legal responsibility of the repairer to ensure that these safety standards are maintained. Repairs must be made in accordance with the relevant safety standards. It is essential that safety critical components are replaced by approved parts. If mains voltage selector is provided, check setting for local voltage.
(No.YA098) 1-5
1.3
INSTALLATION 1.3.2 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.
1.3.1 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 predetermined 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.
SPACE REQUIRED FOR INSTALLATION
150 mm or 150 mm more
200 mm or 200 mm more
150 mm or more 150 mm
200 mm 200 mm or more
50 mm or more
50 mm or more
1.3.3 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.
The supplied hook for tipfall prevention
1-6 (No.YA098)
1.4
PRECAUTIONS REGARDING PDP 1.4.4 OPTICAL FILER (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. 1.4.5 NOTES PRECAUTIONS FOR REPLACEMENT 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.
1.4.1 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. 1.4.2 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. 1.4.3 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.
(No.YA098) 1-7
SECTION 2 SPECIFIC SERVICE INSTRUCTIONS
2.1 FEATURES 2.1.1 HIGH-DEFINITION IMAGE TECHNOLOGY (DIST)
· Teletext function
· DIST (Digital Image Scaling Technology)
Employs an interpolation method that doubles the scanning lines to realize 480-line flickerfree picture making it especially suitable for reproducing high-resolution pictures even on largescreen displays.
The teletext broadcast can be viewed and the teletext pages can be stored in memory. This function make a VCR could automatically download the data or image from the TV, and turn on the TV to view the image when it playing.
· T-V LINK function
2.1.2 MAIN FUNCTION
· DIGITAL VNR
2.1.3 ASPECT CONTROL The screen size can be changed according to the picture aspect ratio.
The DIGITAL VNR function cuts down the amount of noise in original picture. There are three function settings of AUTO,MIN and MAX.
· Super DigiPure
· ZOOM function
This function uses the latest technology to give viewer a natural looking picture. It consist of DigiPure and picture motion compensation function. · MOVIE THEATRE This function displays a cinema film picture more smoothly and naturally on the screen.
Desired screen size (AUTO/REGULAR / PANORAMIC / 14:9 ZOOM / 16:9 ZOOM / 16:9 ZOOM SUBTITLE / FULL) can be selected.
2.1.4 MULTI-SCREEN FUNCTION
· Twin-pictures function · Multi-picture function · Freeze function
· COLOUR MANAGEMENT · Sleep Timer
This function ensures dull colours are compensated to produce natural hues.
With the function, two pictures can be displayed at the Twin pictures mode. With this function, one of multi-picture (12 pictures) can be displayed at the same time. The images that are currently seen can be viewed on the memo screen (still picture). It is convenient for taking down notes like application address and recipe of cooking program etc, while enjoying the current program.
Setting for situations such as falling asleep while watching TV, and for prevention against forgetting to turn off the TV. The power supply of the TV will be cut off automatically when the time exceeds the set up timing (maximum 2 hours). · 3D SOUND function This function makes the speaker sounds like in a wider ambience.
2.2
MAIN DIFFERENCE LIST Item PD-42B50BJ PD-35B50BJ YES NO PD-42B50BU PD-35B50BU NO YES
TABLE TOP STAND WALL BRACKET
1-8 (No.YA098)
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. 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 0.365mm (1 pixel 1.095mm) [42V MODEL] / 0.307 mm (1 plxel 0.921 mm) [35V MODEL] horizontally and 1.110mm [42V MODEL] / 0.921 mm [35V MODEL] 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 0.365mm [42V MODEL] / 0.307 mm [35V MODEL] horizontally and 1.110mm [42V MODEL] / 0.921 mm [35V MODEL] vertically.
Direction Horizontally Vertically No.1 Pixel line No.2 Pixel line No.1 Pixel sequence No.2 Pixel sequence No.851 No.852 Pixel sequence No.852 No.853 Pixel sequence 42V MODEL 35V MODEL
B G R B G R
(R) (G) (B) (R) (G) (B)
B G R B G R
(R) (G) (B) (R) (G) (B)
B G
R B G R
B G
R B G R
(R) (G) (B) (R) (G) (B)
(R) (G) (B) (R) (G) (B)
No.479 Pixel line No.480 Pixel line
B G R B G R
(R) (G) (B) (R) (G) (B)
B G R B G R
(R) (G) (B) (R) (G) (B)
1.110 mm 0.921 mm (Vertically) Pixel pitch (Cell pitch)
42V MODEL 35V MODEL
B G R B G R
(R) (G) (B) (R) (G) (B)
1 pixel (1 dot) B(R) Cell G(G) Cell R(B) Cell
B G R B G R
(R) (G) (B) (R) (G) (B)
1.095mm 42V MODEL 35V MODEL 0.921 mm (Horizontally) Pixel pitch
0.365mm 42V MODEL 35V MODEL 0.307 mm (Horizontally) Cell pitch
35V MODEL 42V MODEL
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 Dot Defects Bright dot defect is a pixel cell that lights though it should not light. The presence of bright dot defects can be confirmed by inputting a full black signal (pattern). (2) Dark Dot Defects Dark dot defect is a pixel cell that does not light, though it should light. The presence of dark dot defects can be confirmed by inputting a 100% full white signal (pattern). (3) Flicker Dot Defects Flicker dot defect is a pixel cell that blinks though it should light or not light. The presence of flicher dot defects can be confirmed by inputting a full black signal (pattern).
(No.YA098) 1-9
2.3.2 MAIN CPU [IC7501] PIN FUNCTION Pin No. 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 65 Terminal name TCK TMS TDI TDO NC OSDB0 OSDB1 OSDB2 OSDB3 OSDB4 TV-LINK RX_BUSY(Sirial) VSS33 VDD33 TV_LINK_OUT A20 A19 A18 A17 VSS25 VDD25 A16 A8 A7 A9 A6 A5 A10 A11 A12 VSS33 VDD33 A4 A3 A2 A1 A0 A13 A14/RAS A15/CAS VSS33 VDD33 MEMCLK CSSDRAM CLKEN CSROM RD UDQM LDQM WR D15 VSS33 VDD33 D7 D0 D14 D8 D6 D1 VSS33 VDD33 D13 D9 D5 D2 Port 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/CS3 P4.4/A20 P4.3/A19 P4.2/A18 P4.1/A17 VSS25 VDD25 P4.0/A16 A8 A7 A9 A6 A5 A10 A11 A12 VSS33 VDD33 A4 A3 A2 A1 A0 A13 A14/RAS A15/CAS VSS33 VDD33 MEMCLK CSSDRAM CLKEN CSROM RD UDQM LDQM WR D15 VSS33 VDD33 D7 D0 D14 D8 D6 D1 VSS33 VDD33 D13 D9 D5 D2 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 I/O Remark Test purpose Test purpose Test purpose Test purpose Not used Bule for OSD Bule for OSD Bule for OSD Bule for OSD Bule for OSD TV-LINK communication Communication for chassis CPU (Request) GND 3.3V TV-LINK communication Memory (Program ROM) address Memory (Program ROM) address Memory (Program ROM) address Memory (Program ROM) address GND 2.5V Memory (Program ROM) address Memory (Program ROM) address Memory (Program ROM) address Memory (Program ROM) address Memory (Program ROM) address Memory (Program ROM) address Memory (Program ROM) address Memory (Program ROM) address Memory (Program ROM) address GND 3.3V Memory (Program ROM) address Memory (Program ROM) address Memory (Program ROM) address Memory (Program ROM) address Memory (Program ROM) address Memory (Program ROM) address Memory (Program ROM) address Memory (Program ROM) address GND 3.3V Clock for memory Chip select for memory Clock enable for memory Chip select for memory Read for memory Control IN / OUT buffer of memory Control IN / OUT buffer of memory Write for memory Data (Program ROM) GND 3.3V Data (Program ROM) Data (Program ROM) Data (Program ROM) Data (Program ROM) Data (Program ROM) Data (Program ROM) GND 3.3V Data (Program ROM) Data (Program ROM) Data (Program ROM) Data (Program ROM)
1-10 (No.YA098)
Pin No. 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
Terminal name D12 D10 VSS33 VDD33 D4 D3 D11 RSTIN POWER ID_TV_POWER(IDTV) REMOCON PIX CLOCK OSDR0 OSDR1 OSDR2 OSDR3 MRST(Sirial) MTSR(Sirial) VSS33 VDD33 VSS25 VDD25 MICON TX MICON RX OSDR4 CLK(Sirial) OSDG0 OSDG1 OSDG2 OSDG3 OSDG4 OSDG5 SCL3A SDA3A TEXT / OTHER IRQ(IDTV) V_PULSE H_PULSE (COR/RSTOUT) Ys VDD33 VSS33 XTAL1 XTAL2 VSSA VDDA R G B VSSA VDDA CVBS VSSA VDDA GND CVBS VSSA VDDA F_KEY_1 F_KEY_2 POWER_KEY NC (TMODE)
Port name D12 D10 VSS33 VDD33 D4 D3 D11 RSTIN P3.0 P3.1 P3.2 P3.3 P3.4 P3.5 P3.6 P3.7 P3.8 P3.9 VSS33 VDD33 VSS25 VDD25 TXD0 RXD0 P3.12 P3.13 P3.15 P5.14 P5.15 TRIG_IN TRIG_OUT P6.2 P6.3 P6.4 P6.5 P6.6 VSYNC HSYNC COR/RSTOUT BLANK/CORBLA VDD33 VSS33 XTAL1 XTAL2 VSSA VDDA R G B VSSA VDDA CVBS2 VSSA VDDA CVBS1B CVBS1A VSSA VDDA P5.0 P5.1 P5.2 P5.3 TMODE
I/O I/O I/O I I/O I/O I/O I O O I I O O O O I/O I/O I I I/O I/O O O O O O O O O I/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
Remark Data (Program ROM) Data (Program ROM) GND 3.3V Data (Program ROM) Data (Program ROM) Data (Program ROM) 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 Communication for chassis CPU (Serial data) Communication for chassis CPU (Serial data) GND 3.3V GND 2.5V Communication for adjustment (Serial data) Communication for adjustment (Serial data) Red for OSD Communication for chassis CPU (Clock) 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 GND 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
(No.YA098) 1-11
2.3.3 CHASSIS CPU [IC7001] PIN FUNCTION Pin No. 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 65 Terminal name NC P_MU FUNC_LED A_MU M_MU PC_SW DIMMER_LED NC NC NC POW_LED NC SBT2 SBI2 SBO2 REQ 3.3V NC GND 3.3V NC 3.3V OSCI OSCO 3.3V NC A92_RST NC LIP_RST NC NC NC MDR_CON 3.3V NC DsyncSW2 NC NC HOTPLUG MECA_SW MAIN_POW MSP_RESET 0V NC AFT1 NC NC NC NC NC NC NC NC 3.3V PDP_TX PDP_RX SDA0 SCL0 SDA_DVI SCL_DVI GND NC AGC YS1 YS2 Port name P60 P61 P62 P63 P50 P51 P52 P53 P54 P55 P56 P57 SBT2 SBI2 SBO2 P23 VDD PB0 VSS XI XO VDD OSCI OSCO (MODE) P24 P25 P26 P27 KI0 KI1 KI2 P33 AVDD P34 P35 P36 P37 P40 P41 P42 P43 VrefAN4 AN5 AN6 AN7 P80 P81 TM0IO SBI3 SBO3 P85 Vref+ SBI4 SBO4 P90 P91 P92 P92 AVSS AN0 AN1 AN2 AN3 I/O O O O O O O O O O O O O I I/O 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 O I O I O I I/O I/O I/O I/O I I I I Remark Not used Viveo mute [Mute : H] Not used Audio out mute [Mute : H] Monitor out mute [Mute : H] PC input switch [ON : H] Power LED brightness control [Low brightness : L] Not used Not used Not used Power LED control [ON : H] Not used Communication for main CPU (Clock) Communication for main CPU (Serial data) Communication for main CPU (Serial data) Communication for main CPU (Request) 3.3V Not used GND 3.3V Not used 3.3V 16MHz for system clock 16MHz for system clock 3.3v Not used 3D YC separator reset [Reset : L] Not used Lip sync reset [Reset : H] Not used Not used Not used Not used 3.3V Not used Not used Not used Not used Not used Power switch input [ON : L] Main power control [ON : L] Multi sound processor reset [Reset : H] GND Not used Tuner AFT detection [Detection : H] Not used Not used Not used Not used Not used Not used Not used Not used 3.3V PDP communication for sub CPU PDP communication for sub CPU I2C bus data (for chassis memory) I2C bus clock (for chassis memory) Not used Not used GND Not used AGC voltage level detection [Detection : H] YS1 detection [Detection : H] YS2 detection [Detection : H]
1-12 (No.YA098)
Pin No. 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
Terminal name 3.3V NC NC NC NC NC NC SBD5 SBT5 3.3V NC REMOCON V_SYNC WAKEUP_SHM POWERGOOD REC_LED RST 3.3V SCL3A SDA3A SCL3B SDA3B NC NC NC DVI_RST GND SCL5055 NC SDA5055 NC NC 15K/OTH DsyncSW1 JCC5057_BUSY
Port name VDD P70 P71 P72 P73 SBI1 SBO1 * * NMI IRQ0 IRQ1 IRQ2 IRQ3 IRQ4 PA5 RST VDD P00 P01 P02 P03 P04 P05 P06 P07 VSS P10 P11 P12 P13 P14 P15 P16 P17
I/O I O O O O O O I/O I I I I I I I O I I I/O I/O I/O I/O O O O O I/O O I/O O O O O I
Remark 3.3V Not used Not used Not used Not used Not used Not used For flash writing For flash writing 3.3V Not used Remote control Vertical sync Sleep state release for chassis CPU [Relese : L] Power error detection [Detection : H] Stand-by power LED control [Stand-by :H] Chassis CPU reset [Reset : L] 3.3V I2C bus clock (for 3D separator, colour management / OSD composition / RGB A-D convert, U / V frontend, sound delay) I2C bus data (for 3D separator, colour management / OSD composition / RGB A-D convert, U / V frontend, sound delay) I2C bus clock (for multi sound process, video / audio select, colour demod. / sync sep. / RGB SW, 3 line comb filter, component video / audio select, sync sep. / SW / detect) I2C bus data (for multi sound process, video / audio select, colour demod. / sync sep. / RGB SW, component video / audio select, sync sep. / SW / detect) Not used Not used Not used Not used GND I2C bus clock (for DIST) Not used I2C bus data (for DIST) Not used Not used Y signal select for 3D YC separator [525i : H other : L] Not used Busy for Colour management / OSD composition [Busy : H]
(No.YA098) 1-13
2.3.4 SUB CPU [IC807] PIN FUNCTION [PD-42B50BJ, PD-42B50BU] Pin No. 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 Terminal name SYSTEM0 SYSTEM3 AVCC X2 X1 VCL RES TEST VSS OSC2 OSC1 VCC PW_LOB PANEL_PW_ON TALK_RST CODEC_RST I2C_STOP NC NC NC NC NC SDA1 FAN SCL1 SDA0 SCL0 SDA2 SCL2 NC SDA3 SCL3 NC NC NMI A_MU (HD) ON_TIMMER REMO POWERLED P85 P86 P87 SCK3 RXD TXD AC_DET NC RXD2 TXD2 NC MECA_SW VD REC_DET I2C_READY FAN_LOCK SYSTEM2 SYSTEM 1 THEM_DET (AMP_PRO2) AMP_PRO1 EE_CDS KEY_IN1 KEY_IN2 Port name PB6/AN6 PB7/AN7 AVCC X2 X1 VCL RES TEST VSS OSC2 OSC1 VCC P50/WKP0 P51/WKP1 P34 P35 P36 P37 P52/WKP2 P53/WKP3 P54/WKP4 P55/WKP5/ADTRG P10/TMOW P11/PWM P12 P56/SDA P57/SCL P74/TMRIV P75/TMCIV P76/TMOV P24 P63/FTIOD0 P62/FTIOC0 P61/FTIOB0 NMI P60/FTIOA0 P64/FTIOA1 P65/FTIOB1 P66/FTIOC1 P67/FTIOD1 P85 P86 P87 P20/SCK3 P21/RXD P22/TXD P23 P70/SCK3_2 P71/RXD_2 P72/TXD_2 P14/IRQ0 P15/IRQ1/TMIB1 P16/IRQ2 P17/IRQ3/TRGV P33 P32 P31 P30 PB3/AN3 PB2/AN2 PB1/AN1 PB0/AN0 PB4/AN4 PB5/AN5 I/O I I I I I O I I O O O O O O O O O O I/O O O I/O O I/O O O I/O O O O I O I O I O I I I O I O I O I O O I I I I I I I I I I I I Remark PDP size select [1.75V : 42V VGA 3.25V : 35V VGA] PDP maker select [0V : SAMSUNG 3.25V : NEC] 5.0V Not used GND GND Reset [Reset : L] GND GND 16MHz for system clock 16MHz for system clock 5.0V Power control [ON : L] Panel power control [ON : L] Not used Not used I2C bus stop control [Stop : L] Not used Not used Not used Not used Not used I2C bus data (for sub memory) Not used I2C bus clock (for sub memory) I2C bus data (for BBE / SURROUND / AUDIO CONTROL, TEMP. SENSOR) I2C bus clock (for BBE / SURROUND / AUDIO CONTROL, TEMP. SENSOR) I2C bus data (for PDP communication) I2C bus clock (for PDP communication) Not used Not used Not used Not used Not used Port for writing on board control [Writing : L] Audio mute [Mute : H] Not used Not used Not used Not used Emulator connection / Port for writing on board [Writing : H] Emulator connection Emulator connection Port for writing on board Port for writing on board Port for writing on board AC power frequency detection [Detection : H] Not used Communication for main CPU (Serial data) Communication for main CPU (Serial data) Not used Not used Vertical sync Not used PDP I2C communication select (Prohibition : L Permission : H) Not used Not used Not used Temp. sensor detection [Detection : H] GND Temp. protector detection for Audio out [Detection : L] Not used Not used Not used
1-14 (No.YA098)
2.3.5 SUB CPU [IC807] PIN FUNCTION [PD-35B50BJ, PD-35B50BU] Pin No. 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 Terminal name SYSTEM0 SYSTEM3 AVCC X2 X1 VCL RES TEST VSS OSC2 OSC1 VCC PW_LOB PANEL_PW_ON TALK_RST CODEC_RST I2C_STOP NC PSCK PLE CLE PSSC SDA1 FAN SCL1 SDA0 SCL0 SDATA SCK LE SDA3 SCL3 NC NC NMI A_MU (HD) ON_TIMMER REMO POWERLED P85 P86 P87 SCK3 RXD TXD ALARM NC RXD2 TXD2 NC MECA_SW VD REC_DET PSS FAN_LOCK SYSTEM2 SYSTEM 1 THEM_DET (AMP_PRO2) AMP_PRO1 EE_CDS KEY_IN1 KEY_IN2 Port name PB6/AN6 PB7/AN7 AVCC X2 X1 VCL RES TEST VSS OSC2 OSC1 VCC P50/WKP0 P51/WKP1 P34 P35 P36 P37 P52/WKP2 P53/WKP3 P54/WKP4 P55/WKP5/ADTRG P10/TMOW P11/PWM P12 P56/SDA P57/SCL P74/TMRIV P75/TMCIV P76/TMOV P24 P63/FTIOD0 P62/FTIOC0 P61/FTIOB0 NMI P60/FTIOA0 P64/FTIOA1 P65/FTIOB1 P66/FTIOC1 P67/FTIOD1 P85 P86 P87 P20/SCK3 P21/RXD P22/TXD P23 P70/SCK3_2 P71/RXD_2 P72/TXD_2 P14/IRQ0 P15/IRQ1/TMIB1 P16/IRQ2 P17/IRQ3/TRGV P33 P32 P31 P30 PB3/AN3 PB2/AN2 PB1/AN1 PB0/AN0 PB4/AN4 PB5/AN5 I/O I I I I I O I I O O O O O O O O O O I/O O O I/O O I/O O O I/O O O O I O I O I O I I I O I O I O I O O I I I I I I I I I I I I Remark PDP size select [1.75V : 42V VGA 3.25V : 35V VGA] PDP maker select [0V : SAMSUNG 3.25V : NEC] 5.0V Not used GND GND Reset [Reset : L] GND GND 16MHz for system clock 16MHz for system clock 5.0V Power control [ON : L] Panel power control [ON : L] Not used Not used I2C bus stop control [Stop : L] Not used Not used PDP communication for DVI / LVDS format conversion Not used Not used I2C bus data (for sub memory) Not used I2C bus clock (for sub memory) I2C bus data (for BBE / SURROUND / AUDIO CONTROL, TEMP. SENSOR) I2C bus clock (for BBE / SURROUND / AUDIO CONTROL, TEMP. SENSOR) I2C bus data (for PDP communication) I2C bus clock (for PDP communication) PDP communication control for DVI / LVDS format conversion Not used Not used Not used Not used Port for writing on board control [Writing : L] Audio mute [Mute : H] Not used Not used Not used Not used Emulator connection / Port for writing on board [Writing : H] Emulator connection Emulator connection Port for writing on board Port for writing on board Port for writing on board AC power frequency detection [Detection : H] Not used Communication for main CPU (Serial data) Communication for main CPU (Serial data) Not used Not used Vertical sync Not used PDP communication for DVI / LVDS format conversion Not used Not used Not used Temp. sensor detection [Detection : H] GND Temp. protector detection for Audio out [Detection : L] Not used Not used Not used
(No.YA098) 1-15
SECTION 3 DISASSEMBLY
3.1 DISASSEMBLY PROCEDURE [42V MODEL] 3.1.2 REMOVING THE TERMINAL COVER AND CENTER COVER (Fig.1) CAUTION: · When exchanging parts etc. with the front side (PDP side) facing down, please place a protection sheet below before starting, so as to prevent scratches on the front side. 3.1.1 REMOVING THE REAR COVER (Fig.1) (1) (2) (3) (4) (5) Remove the power cord. Remove the 2 screws [A] and the 6 screws [B]. Remove the TABLE TOP STAND. [PD-42B50BJ] Remove the 2 screws [C]. [PD-42B50BU] Remove the 15 screws [D], the 4 screws [E], the 8 screws [F] and remove the REAR COVER.
· Remove the REAR COVER.
(1) Remove the 7 screws [G], and remove the CHASSIS SHIELD COVER. (2) Remove the 7 screws [H], the 6 screws [I] and the 1 screw [J], and remove the TERMINAL COVER. (3) Remove the 6 screws [K], and remove the CENTER COVER.
B (x6) A
(x2)
C (x2)
[PD-42B50BU]
F (x8) D (x4)
TABLE TOP STAND [PD-42B50BJ]
D (x11) E (x2)
REAR COVER
TERMINAL COVER (x6) H
E
K
(x6) CENTER COVER
J I (x6) H
G (x7)
CHASSIS SHIELD COVER
1-16 (No.YA098)
Fig. 1
3.1.3 REMOVING THE AUDIO PWB (Fig. 2) · Remove the REAR COVER. (1) Remove the 4 screws [L], and remove the AUDIO CHASSIS COVER. (2) Disconnect the connectors [CN600B], [CN600C], [CN600Y], [CN600SL], [CN60SR] from the AUDIO PWB. (3) Remove the 4 screws [M], and remove the AUDIO PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.1.4 REMOVING THE AV JACK PWB (Fig.2) · Remove the REAR COVER. · Remove the CENTER COVER. · Remove the CHASSIS SHIELD COVER. · Remove the TERMINAL COVER. (1) Disconnect the COAXIAL CABLE. (2) Remove the 1 screw [N], the 6 screws [O], and the 1 connector [P], and remove the TERMINAL BOARD. (3) Disconnect the connectors [CN0J01], [CN0J02] from the AV JACK PWB. (4) Remove the AV JACK PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.1.5 REMOVING THE INTERFACE PWB (Fig.2) · Remove the REAR COVER. · Remove the CENTER COVER. · Remove the CHASSIS SHIELD COVER. · Remove the TERMINAL COVER. (1) Disconnect the connectors [CN00B], [CN00C], [CN00Q], [CN00G], [CN00T], [CN00V], [CN00X], [CN0FC], [CN0FN] from the INTERFACE PWB. (2) Remove the 2 screws [Q], and withdraw the INTERFACE PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.1.6 REMOVING THE REGULATOR PWB (Fig.2) · Remove the REAR COVER. · Remove the CENTER COVER. · Remove the CHASSIS SHIELD COVER. · Remove the TERMINAL COVER. · Remove the INTERFACE PWB. (1) Disconnect the connectors [CN003], [CN008], [CN00D] from the REGULATOR PWB. (2) Remove the 4 screws [R], and remove the REGULATOR PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.1.7 REMOVING THE LINE FILTER PWB (Fig.2) · Remove the REAR COVER. · Remove the CENTER COVER. · Remove the CHASSIS SHIELD COVER. · Remove the TERMINAL COVER. · Remove the INTERFACE PWB. (1) Remove the 1 screw [S] and the 1 screw [T], and remove AC INLET PANEL. (2) Disconnect the connector [CN8001] from the MAIN POWER PWB. (3) Remove the 1 screw [U], the 1 screw [V] and the 2 screws [W], and remove the LINE FILTER PWB.
NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.1.8 REMOVING THE RECEIVER PWB (Fig.2) · Remove the REAR COVER. · Remove the CENTER COVER. · Remove the CHASSIS SHIELD COVER. · Remove the TERMINAL COVER. (1) Disconnect the COAXIAL CABLE. (2) Disconnect the connectors [CN00A], [CN00T] from the RECEIVER PWB. (3) Withdraw the RECEIVER PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.1.9 REMOVING THE ANALOG SIGNAL PWB (Fig.2) · Remove the REAR COVER. · Remove the CENTER COVER. · Remove the CHASSIS SHIELD COVER. · Remove the TERMINAL COVER. · Remove the RECEIVER PWB. (1) Disconnect the connectors [CN00F], [CN00G], [CN0J01], [CN0J02] from the ANALOG SIGNAL PWB. (2) Remove the 4 screws [X], and remove the ANALOG SIGNAL PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.1.10 REMOVING THE DIGITAL SIGNAL PWB (Fig.2) · Remove the REAR COVER. · Remove the CENTER COVER. · Remove the CHASSIS SHIELD COVER. · Remove the TERMINAL COVER. (1) Disconnect the connectors [CN001], [CN002], [CN003], [CN0FC], [CN0LV2] from the DIGITAL SIGNAL PWB. (2) Remove the 5 screws [Y], and remove the DIGITAL SIGNAL PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.1.11 REMOVING THE MAIN BASE, CHASSIS BASE AND AUDIO PWB BASE (Fig.2) · Remove the REAR COVER. · Remove the CENTER COVER. · Remove the CHASSIS SHIELD COVER. · Remove the TERMINAL COVER. · Remove the AUDIO PWB. · Remove the AV JACK PWB. · Remove the INTERFACE PWB. · Remove the REGULATOR PWB. · Remove the LINE FILTER PWB. · Remove the RECEIVER PWB. · Remove the ANALOG SIGNAL PWB. · Remove the DIGITAL SIGNAL PWB. (1) Remove the 1 screw [Z], and remove the DIGITAL TERMINAL COVER. (2) Remove the 1 screw [a]. (3) Lift the MAIN BASE upright and remove it. (4) Remove the 2 screws [b], and remove the CHASSIS BASE. (5) Remove the 1 screw [c], and remove the AUDIO PWB BASE.
(No.YA098) 1-17
INTERFACE PWB
Q
(x2) RECEIVER PWB
R (x4)
W (x2)
V U
ANALOG SIGNAL PWB
X (x4)
REGULATOR PWB
a
LINE FILTER PWB
Y
(x5)
AV JACK PWB
a
COAXIAL CABLE
TERMINAL BOARD
DIGITAL SIGNAL PWB
O N S b
MAIN BASE AC INLET PANEL (x6)
T P L (x4)
b M
(x4) a AUDIO CHASSIS COVER AUDIO PWB
c
DIGITAL TERMINAL COVER CHASSIS BASE AUDIO PWB BASE
Z
Fig. 2 1-18 (No.YA098)
3.1.12 REMOVING THE FRONT CONTROL PWB (Fig.3)
3.1.16 REMOVING THE SUB POWER PWB (Fig.3)
· Remove the REAR COVER. · Remove the CENTER COVER.
(1) Remove the 4 screws [d] and the 2 screws [e]. (2) From the front side of the main body, remove the 2 screws [f]. (3) Disconnect the connectors [CN00F], [CN00T] from the FRONT CONTROL PWB. (4) Remove the FRONT CONTROL PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.1.13 REMOVING THE FRONT LED PWB (Fig.3)
· Remove the REAR COVER.
(3) Disconnect the connectors [CN9001], [CN9005] [CN9010] from the SUB POWER PWB. (4) Remove the 4 screws [k], and remove the SUB POWER PWB and the INSULATOR. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.1.17 REMOVING THE PDP UNIT (Fig.3)
· Remove the REAR COVER. · Remove the CENTER COVER. · Remove the FRONT CONTROL COVER.
(1) Remove the 2 screws [g], and withdraw the FRONT PWB BASE. (2) Disconnect the connector [CN00X] from the FRONT LED PWB. (3) Remove the 2 screws [h], and remove the FRONT LED PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.1.14 REMOVING THE TEMP. SENSOR PWB (Fig.3)
· Remove the REAR COVER. · Remove the CENTER COVER. · Remove the CHASSIS SHIELD COVER. · Remove the TERMINAL COVER. · Remove the MAIN BASE, CHASSIS BASE and AUDIO PWB
BASE (with each PWB affixed on the MAIN BASE, CHASSIS BASE and AUDIO PWB BASE). · Remove the TEMP. SENSOR PWB. · Remove the MAIN POWER PWB. · Remove the SUB POWER PWB. (1) Remove the 8 screws [m] and the 8 screws [n], and remove the BACK FRAME. (2) Lift the PDP UNIT upright and remove it with enough care not to impose shock to the PDP UNIT. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 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.
· Remove the REAR COVER.
(1) Disconnect the connector [CN00V] from the TEMP. SENSOR PWB. (2) Remove the 1 screw [i], and remove the TEMP. SENSOR PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.1.15 REMOVING THE MAIN POWER PWB (Fig.3)
· Remove the REAR COVER.
(1) Disconnect the connectors [CN8001], [CN8002], [CN8003], [CN8006], [CN8008], [CN8009], [CN9001] from the MAIN POWER PWB. (2) Remove the 6 screws [j], and remove the MAIN POWER PWB and the POWER PWB BRACKET. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors.
(No.YA098) 1-19
n (x4)
BACK FRAME
m (x4)
INSULATOR
k (x4)
j (x6)
MAIN POWER PWB
SUB POWER PWB
j
m (x4)
n (x4) i
TEMP. SENSOR PWB POWER PWB BRACKET
INSULATOR
GAS insertion hole
e
(x2) PDP UNIT FRONT CONTROL PWB
d (x4)
g
(x2) FRONT PWB BASE
FRONT LED PWB
h (x2) f (x2)
Fig. 3
1-20 (No.YA098)
3.1.18 REMOVING THE PWB IN PDP UNIT 3.1.18.1 REMOVING THE X-MAIN PWB (Fig.4) · Remove the PDP UNIT. (1) Disconnect the connectors [CN4001], [CN4002], [CN4003], [CN4004], [CN4005] from the X-MAIN PWB. (2) Remove the 8 screws [o], and remove the X-MAIN PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.1.18.2 REMOVING THE Y-MAIN PWB (Fig.4) · Remove the PDP UNIT. (1) Disconnect the connectors [CN5001], [CN5002], [CN5003], [CN5004], [CN5005], [CN5006], [CN5007], [CN5008] from the Y-MAIN PWB. (2) Remove the 7 screws [p], and remove the Y-MAIN PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.1.18.3 REMOVING THE LOGIC-MAIN PWB (Fig.4) · Remove the PDP UNIT. (1) Disconnect the connectors [CN101], [CN201], [CN401], [CN402], [CN403], [CN803] from the LOGIC-MAIN PWB. (2) Remove the 7 screws [q], and remove the LOGIC-MAIN PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.1.18.4 REMOVING THE Y-BUFFER-U PWB (Fig. 4) · Remove the PDP UNIT. (1) Disconnect the connectors [CN5401], [CN5402], [CN5403], [CN5404], [CN5405], [CN5406] from the YBUFFER-U PWB. (2) Remove the 5 screws [r], and remove the Y-BUFFER-U PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors.
3.1.18.5 REMOVING THE Y-BUFFER-L PWB (Fig.4) · Remove the PDP UNIT. (1) Disconnect the connectors [CN5501], [CN5502], [CN5503], [CN5504], [CN5505], [CN5506] from the YBUFFER-L PWB. (2) Remove the 5 screws [s], and remove the Y-BUFFER-L PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.1.18.6 REMOVING THE E-BUFFER PWB (Fig.4) · Remove the PDP UNIT. (1) Disconnect the connectors [CN401], [CN806], [EC1], [EC2], [EC3], [EC4], [EC5], [EC6], [EF1] from the E-BUFFER PWB. (2) Remove the 6 screws [t], and remove the E-BUFFER PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.1.18.7 REMOVING THE F-BUFFER PWB (Fig.4) · Remove the PDP UNIT. (1) Disconnect the connectors [CN402], [FC1], [FC2], [FE1], [FG1] from the F-BUFFER PWB. (2) Remove the 3screws [u], and remove the F-BUFFER PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.1.18.8 REMOVING THE G-BUFFER PWB (Fig.4) · Remove the PDP UNIT. (1) Disconnect the connectors [CN403], [GC1], [GC2], [GC3], [GC4], [GC5], [GC6], [GF1] from the G-BUFFER PWB. (2) Remove the 6 screws [v], and remove the G-BUFFER PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors.
Y-MAIN PWB (x5) r
p (x7)
(x7) (x8) q o
X-MAIN PWB
Y-BUFFER-U PWB
Y-BUFFER-L PWB (x5) s (x6) t u (x3) v (x6) G-BUFFER PWB
E-BUFFER PWB F-BUFFER PWB LOGIC-MAIN PWB
Fig. 4
(No.YA098) 1-21
3.1.19 REMOVING THE SPEAKER (Fig.5) · Remove the REAR COVER · Remove the CENTER COVER. · Remove the CHASSIS SHIELD COVER. · Remove the TERMINAL COVER. · Remove the MAIN BASE, CHASSIS BASE and AUDIO PWB BASE (with each PWB affixed on the MAIN BASE, CHASSIS BASE and AUDIO PWB BASE). (1) Remove the 3 screws [w], and remove the SPEAKER. (2) Follow the same steps when removing the other hand SPEAKER. CAUTION: · Please do not disassembly the SPEAKER. 3.1.20 REMOVING THE FRONT PANEL AND THE FRONT FILTER (Fig.5)
(1) Remove the 8 screws [x]. (2) Lift the FRAME BRACKETS and FRONT FILTER upright and remove it with enough care not to damage the FRONT FILTER. (3) Remove the FRONT PANEL. (4) Remove the 16 screws [y], and remove the FILTER BRACKET. (5) Remove the FRONT FILTER. 3.1.21 REMOVING THE TOP FRAME, BOTTOM FRAME AND SIDE FRAME (Fig.5)
· · · · ·
· · · · ·
Remove the REAR COVER Remove the CENTER COVER. Remove the CHASSIS SHIELD COVER. Remove the TERMINAL COVER. Remove the MAIN BASE, CHASSIS BASE and AUDIO PWB BASE (with each PWB affixed on the MAIN BASE, CHASSIS BASE and AUDIO PWB BASE). · Remove the PDP UNIT.
z x (x4) y
(x5) f
Remove the REAR COVER Remove the CENTER COVER. Remove the CHASSIS SHIELD COVER. Remove the TERMINAL COVER. Remove the MAIN BASE, CHASSIS BASE and AUDIO PWB BASE (with each PWB affixed on the MAIN BASE, CHASSIS BASE and AUDIO PWB BASE). · Remove the PDP UNIT. · Remove the FRONT FILTER. (1) Remove the 4 bosses [z] and the 8 screws [AA], and remove the TOP FRAME, BOTTOM FRAMEand SIDE FRAME.
AA (x2)
z y
(x3) FILTER BRACKET
SIDE FRAME
z AA
(x2) SIDE FRAME
TOP FRAME (x4)
BOTTOM FRAME
AA
(x2)
z
x
y (x5)
y
(x3)
AA
(x2)
w (x3)
SPEAKER
f
FRONT FILTER
w
(x3)
SPEAKER
FRONT PANEL
1-22 (No.YA098)
Fig. 5
3.2
DISASSEMBLY PROCEDURE [35V MODEL]
CAUTION: · When exchanging parts etc. with the front side (PDP side) facing down, please place a protection sheet below before starting, so as to prevent scratches on the front side. 3.2.1 REMOVING THE REAR COVER (Fig.6) (1) (2) (3) (4) Remove the power cord. Remove the 2 screws [A] and the 6 screws [B]. Remove the TABLE TOP STAND. [PD-35B50BJ] Remove the 2 screws [c]. [PD-35B50BU]
(5) Remove the 14 screws [D], the 6 screws [E] and the 8 screws [F], and remove the REAR COVER. 3.2.2 REMOVING THE TERMINAL COVER AND CENTER COVER (Fig.6)
· Remove the REAR COVER.
(1) Remove the 6 screws [G], and remove the CENTER COVER. (2) Remove the 7 screws [H], and remove the CHASSIS SHIELD COVER. (3) Remove the 8 screws [I], the 6 screws [J] and the 1 screw [K], and remove the TERMINAL COVER.
B (x6)
A (x2)
C (x2)
[PD-35B50BU]
E (x6) D (x14)
TABLE TOP STAND [PD-35B50BJ]
F (x8) I (x6)
TERMINAL COVER REAR COVER
K H (x7)
CHASSIS SHIELD COVER
I
J (x6)
G (x6)
CENTER COVER
Fig. 6
(No.YA098) 1-23
3.2.3 REMOVING THE AUDIO PWB (Fig. 7) · Remove the REAR COVER. (1) Remove the 2 screws [L], and remove the AUDIO CHASSIS COVER. (2) Disconnect the connectors [CN600B], [CN600C], [CN600Y], [CN60SL], [CN60SR] from the AUDIO PWB. (3) Remove the 4 screws [M], and remove the AUDIO PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.2.4 REMOVING THE AV JACK PWB (Fig.7) · Remove the REAR COVER. · Remove the CENTER COVER. · Remove the CHASSIS SHIELD COVER. · Remove the TERMINAL COVER. (1) Disconnect the COAXIAL CABLE. (2) Remove the 1 screw [N], the 6 screws [O] and the 1 connector [P], and remove the TERMINAL BOARD. (3) Disconnect the connectors [CN0J01], [CN0J02] from the AV JACK PWB. (4) Remove the AV JACK PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.2.5 REMOVING THE INTERFACE PWB (Fig.7) · Remove the REAR COVER. · Remove the CENTER COVER. · Remove the CHASSIS SHIELD COVER. · Remove the TERMINAL COVER. (1) Disconnect the connectors [CN00B], [CN00C], [CN00Q], [CN00G], [CN00T], [CN00V], [CN00X], [CN0FC], [CN0FN] from the INTERFACE PWB. (2) Remove the 2 screws [Q], and withdraw the INTERFACE PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.2.6 REMOVING THE REGULATOR PWB (Fig.7) · Remove the REAR COVER. · Remove the CENTER COVER. · Remove the CHASSIS SHIELD COVER. · Remove the TERMINAL COVER. · Remove the INTERFACE PWB. (1) Disconnect the connectors [CN003], [CN008], [CN00D] from the REGULATOR PWB. (2) Remove the 4 screws [R], and remove the REGULATOR PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.2.7 REMOVING THE LINE FILTER PWB (Fig.7) · Remove the REAR COVER. · Remove the CENTER COVER. · Remove the CHASSIS SHIELD COVER. · Remove the TERMINAL COVER. · Remove the INTERFACE PWB. (1) Remove the 1 screw [S] and the 1 screw [T], and remove AC INLET PANEL. (2) Disconnect the connector [CN8001] from the MAIN POWER PWB. 1-24 (No.YA098)
(3) Remove the 1 screw [U] and the 2 screw [V], and remove the LINE FILTER PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.2.8 REMOVING THE RECEIVER PWB (Fig.7) · Remove the REAR COVER. · Remove the CENTER COVER. · Remove the CHASSIS SHIELD COVER. · Remove the TERMINAL COVER. (1) Disconnect the COAXIAL CABLE. (2) Disconnect the connectors [CN00A], [CN00T] from the RECEIVER PWB. (3) Withdraw the RECEIVER PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.2.9 REMOVING THE ANALOG SIGNAL PWB (Fig.7) · Remove the REAR COVER. · Remove the CENTER COVER. · Remove the CHASSIS SHIELD COVER. · Remove the TERMINAL COVER. · Remove the RECEIVER PWB. (1) Disconnect the connectors [CN00F], [CN00G], [CN0J01], [CN0J02] from the ANALOG SIGNAL PWB. (2) Remove the 4 screws [W], and remove the ANALOG SIGNAL PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.2.10 REMOVING DIGITAL SIGNAL PWB (Fig.7) · Remove the REAR COVER. · Remove the CENTER COVER. · Remove the CHASSIS SHIELD COVER. · Remove the TERMINAL COVER. (1) Disconnect the connectors [CN001], [CN002], [CN003], [CN0FC], [CN0LV2] from the DIGITAL SIGNAL PWB. (2) Remove the 5 screws [X], and remove the DIGNTAL SIGNAL PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.2.11 REMOVING THE MAIN BASE, CHASSIS BASE AND AUDIO PWB BASE (Fig.7) · Remove the REAR COVER. · Remove the CENTER COVER. · Remove the CHASSIS SHIELD COVER. · Remove the TERMINAL COVER. · Remove the AUDIO PWB. · Remove the AV JACK PWB. · Remove the INTERFACE PWB. · Remove the REGULATOR PWB. · Remove the LINE FILTER PWB. · Remove the RECEIVER PWB. · Remove the ANALOG SIGNAL PWB. · Remove the DIGITAL SIGNAL PWB. (1) Remove the 1 screw [Y], and remove the DIGITAL TERMINAL COVER. (2) Remove the 1 screw [Z]. (3) Lift the MAIN BASE upright, and remove it. (4) Remove the 2 screws [a], and remove the CHASSIS BASE. (5) Remove the 1 screw [b], and remove the AUDIO PWB BASE.
INTERFACE PWB RECEIVER PWB
Q (x2)
(x4) W REGULATOR PWB ANALOG SIGNAL PWB
U
(x4) R
V
(x2)
LINE FILTER PWB
Z
AC INLET PANEL
S X (x5)
DIGITAL SIGNAL PWB COAXIAL CABLE AV JACK PWB TERMINAL BOARD
T
N a
MAIN BASE (x2) L (x4) M
P
O (x6)
a
AUDIO CHASSIS COVER
AUDIO PWB
b Y
DIGITAL TERMINAL COVER
CHASSIS BASE AUDIO PWB BASE
Fig. 7 (No.YA098) 1-25
3.2.12 REMOVING THE FRONT CONTROL PWB (Fig.8)
3.2.16 REMOVING THE SUB POWER PWB (Fig.8)
· Remove the REAR COVER. · Remove the CENTER COVER.
(1) Remove the 4 screws [c] and the 2 screws [d]. (2) From the front side of the main body, remove the 2 screws [e]. (3) Disconnect the connectors [CN00F], [CN00T] from the FRONT CONTROL PWB. (4) Remove the FRONT CONTROL PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.2.13 REMOVING THE FRONT LED PWB (Fig.8)
· Remove the REAR COVER.
(1) Disconnect the connectors [CN9001], [CN9005] [CN9010] from the SUB POWER PWB. (2) Remove the 4 screws [j], and remove the SUB POWER PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.2.17 REMOVING THE POWER PWB BASE (Fig.8)
· Remove the REAR COVER. · Remove the CENTER COVER. · Remove the FRONT CONTROL COVER.
(1) Remove the 2 screws [f], and remove the FRONT PWB BASE. (2) Disconnect the connector [CN00X] from the FRONT LED PWB. (3) Remove the 2 screws [g], and remove the FRONT LED PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.2.14 REMOVING THE TEMP. SENSOR PWB (Fig.8)
· Remove the REAR COVER. · Remove the TEMP. SENSOR PWB. · Remove the MAIN POWER UNIT. · Remove the SUB POWER PWB
(1) Remove the 4 screws [k], and remove the POWER PWB BASE. 3.2.18 REMOVING THE PDP UNIT (Fig.8)
· · · · ·
· Remove the REAR COVER.
(1) Disconnect the connector [CN00V] from the TEMP. SENSOR PWB. (2) Remove the 1 screw [h], and remove the TEMP. SENSOR PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.2.15 REMOVING THE MAIN POWER UNIT (Fig.8)
Remove the REAR COVER. Remove the CENTER COVER. Remove the CHASSIS SHIELD COVER. Remove the TERMINAL COVER. Remove the MAIN BASE, CHASSIS BASE anb AUDIO PWB BASE (with each PWB affixed on the MAIN BASE, CHASSIS BASE and AUDIO PWB BASE). · Remove the POWER PWB BASE (with each PWB affixed on the POWER PWB BASE). (1) Remove the 8 screws [m] and the 8 screws [n], and remove the BACK FRAME. (2) Lift the PDP UNIT upright and remove it with enough care not to impose shock to the PDP UNIT. (3) Remove the 8 screws [o], and remove the BACK FRAME SPACERS. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 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.
· Remove the REAR COVER.
(1) Disconnect the connectors [CN8001], [CN8003], [CN8005], [CN8009], [CN9001] from the MAIN POWER UNIT. (2) Remove the 6 screws [i], and remove the MAIN POWER UNIT. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors.
1-26 (No.YA098)
i (x6) j (x4)
MAIN POWER UNIT
h
SUB POWER PWB k (x2) TEMP.SENSOR PWB
k (x2)
m (x2)
n (x2)
(x2)
n (x2) n
(x2) POWER PWB BASE
m
o (x2)
m (x2) o (x2)
n (x2) m (x2)
BACK FRAME
(x2) o
BACK FRAME SPECER
o
(x2)
GAS insertion hole
(x2) d
(x4)
c
FRONT CONTROL PWB
PDP UNIT
f
(x2)
FRONT PWB BASE FRONT LED PWB
g (x2) e (x2)
Fig. 8 (No.YA098) 1-27
3.2.19 REMOVING THE PWB IN PDP UNIT 3.2.19.1 REMOVING THE PANEL POWER PWB (Fig.9) · Remove the PDP UNIT. (1) Disconnect the connectors [CN200], [CN305], [CN315] from the PANEL POWER PWB. (2) Remove the 12 screws [p] and the 9 screws [q], and remove the PANEL POWER PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.2.19.2 REMOVING THE LOGIC CONTROL PWB (Fig.9) · Remove the PDP UNIT. (1) Disconnect the connectors [CN401], [CN402], [CN601], [CN701] from the LOGIC CONTROL PWB. (2) Remove the 4 screws [r], and remove the LOGIC CONTROL PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.2.19.3 REMOVING THE COMMON DRIVE PWB (Fig.9) · Remove the PDP UNIT. (1) Disconnect the connectors [CN1], [CN2], [CN3] from the COMMON DRIVE PWB. (2) Remove the 4 screws [s] and the 4 screws [t], and remove the COMMON DRIVE PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.2.19.4 REMOVING THE SCANNING DRIVE PWB (Fig. 9) · Remove the PDP UNIT. (1) Disconnect the connectors [CN222], [CN223], [CN224], [CN226], [CN227] from the SCANNING DRIVE PWB.
(2) Remove the 8 screws [u] and the 2 screws [v], and remove the SCANNING DRIVE PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.2.19.5 REMOVING THE SIGNAL DRIVE-L PWB (Fig.9) · Remove the PDP UNIT. (1) Remove the 7 screws [w], and remove the HEAT SINK. (2) Disconnect the connectors [CN6], [CN7], [CN8], [CN9], [CN10], [CN13], [CN14], [CN15] from the SIGNAL DRIVEL PWB. (3) Remove the 5 screws [x], and remove the SIGNAL DRIVEL PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.2.18.6 REMOVING THE SIGNAL DRIVE-R PWB (Fig.9) · Remove the PDP UNIT. (1) Remove the 8 screws [w], and remove the HEAT SINK. (2) Disconnect the connectors [CN1], [CN2], [CN3], [CN4], [CN5], [CN11], [CN12], [CN16] from the SIGNAL DRIVE-R PWB. (3) Remove the 4 screws [y], and remove the SIGNAL DRIVER PWB. NOTE: · It is advisable to take note of the connecting location (connector number) of the removed connectors. 3.2.19.7 REMOVING THE BRIDGE PWB (Fig.9) · Remove the PDP UNIT. (1) Remove the 8screws [z] and the 5 screws [AA], and remove the BRIDGE PWB.
LOGIC CONTROL PWB COMMON DRIVE PWB AA (x5)
BRIDGE PWB z (x8) q (x9)
PANEL POWER PWB p (x12) SCANNING DRIVE PWB
(x4) s (x4) t v (x2)
u (x8) (x4) r (x5) x
y (x4)
SIGNAL DRIVE-L PWB
SIGNAL DRIVE-R PWB
HEAT SINK
Fig. 9
1-28 (No.YA098)
v (x7)
3.2.20 REMOVING THE SPEAKER (Fig.10) · Remove the REAR COVER · Remove the CENTER COVER. · Remove the CHASSIS SHIELD COVER. · Remove the TERMINAL COVER. · Remove the MAIN BASE, CHASSIS BASE and AUDIO PWB BASE (with each PWB affixed on the MAIN BASE, CHASSIS BASE and AUDIO PWB BASE). (1) Remove the 4 screws [AB], and remove the SPEAKER. (2) Follow the same steps when removing the other hand SPEAKER. CAUTION: · Please do not disassembly the SPEAKER. 3.2.21 REMOVING THE FRONT PANEL AND THE FRONT FILTER (Fig.10) · Remove the REAR COVER · Remove the CENTER COVER. · Remove the CHASSIS SHIELD COVER. · Remove the TERMINAL COVER. · Remove the MAIN BASE, CHASSIS BASE and AUDIO PWB BASE (with each PWB affixed on the MAIN BASE, CHASSIS BASE and AUDIO PWB BASE). · Remove the PDP UNIT.
AD (x4)
(1) Remove the 6 screws [AC]. (2) Lift the FRAME BRACKETS and FRONT FILTER upright and remove it with enough care not to damage the FRONT FILTER. (3) Remove the FRONT PANEL. (4) Remove the 12 screws [AD], and remove the FILTER BRACKET. (5) Remove the FRONT FILTER. 3.2.22 REMOVING THE TOP FRAME, BOTTOM FRAME AND SIDE FRAME (Fig.10) Remove the REAR COVER Remove the CENTER COVER. Remove the CHASSIS SHIELD COVER. Remove the TERMINAL COVER. Remove the MAIN BASE, CHASSIS BASE and AUDIO PWB BASE (with each PWB affixed on the MAIN BASE, CHASSIS BASE and AUDIO PWB BASE). · Remove the PDP UNIT. · Remove the FRONT FILTER. (1) Remove the 8 screws [AE], and remove the TOP FRAME, BOTTOM FRAME and SIDE FRAME.
· · · · ·
AE (x2) AD (x2)
AC (x2)
SIDE FRAME TOP FRAME (x4) AC FILTER BRACKET
AE (x2)
SIDE FRAME BOTTOM FRAME
AE (x2) AD (x4)
AD (x2)
FRONT FILTER
AE
(x2)
AB (x4)
SPEAKER
(x4) AB
SPEAKER FRONT PANEL
Fig. 10
(No.YA098) 1-29
3.3
REPLACEMENT OF MEMORY IC
3.3.1 MEMORY IC This unit uses the nonvolatile memory IC. The memory IC memories data for video and deflection circuits. To replace the memory IC without the data written, malfunctions might occurred while power is on, and the normal image might not appear. When replacing the memory IC, be sure to use the IC written with the initial values of data. 3.3.2 PROCEDURE FOR REPLACING THE MEMORY IC 1. Power off Switch the power off and unplug the power cord from the wall outlet. 2. Replacing the memory IC Replace the memory IC with new one. Be sure to use the memory IC written with the init