JVC PD-42V475/S, PD-42V485/S Service Manual

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Page 1

SERVICE MANUAL

PDP COLOR TELEVISION

PD-42V475

PD-42V485/S

BASIC C

POWER

CATVVCR

DVD

MULTI SCREEN

TWIN

INDEX

C.C.

SWAP

SELECT

INPUT

FREEZE

DISPLAY

SLEEP TIMER

SOUND

RETURN+

TUNE

VIDEO STATUS

THEATER PRO

LIGHT

ASPECT

MUTING

CH +

VOL

CH Ð

BACK

VCR/DVD

VCR CHANNEL

TV/VCR

POWER

PREV NEXT

PLAY FFREW

REC

STOP PAUSE

OPEN/CLOSE

STILL/PAUSE

RM-C1257G

HASSIS

FP2

1 PRECAUTION

......................................................................................................................................................... 1-3

2 SPECIFIC SERVICE INSTRUCTIONS 3 DISASSEMBLY 4 ADJUSTMENT 5 TROUBLESHOOTING

..................................................................................................................................................... 1-11

...................................................................................................................................................... 1-22

........................................................................................................................................... 1-31

...................................................................................................................... 1-6

No.YA099

2004/7

Page 2

SPECIFICATION

Items

Dimensions (W x H x D)

Mass 48.3kg (106.3

TV RF System CCIR (M) Color System NTSC Sound System BTSC (Multi channel sound) TV Receiving Channels VHF Low 02ch to 06ch : 54MHz to 88MHz and Frequency VHF High 07ch to 13ch : 174MHz to 216MHz

TV/CATV Total Channel 180 channel Intermediate Frequency VIF 45.75MHz

Color Sub Carrier Frequency Power Input AC120V, 60Hz Power Consumption Operate : 364W, Stand by: 0.94W Plasma Display Panel (PDP)  QLE0028-001

Screen Size Visible size : 107.5cm (Diagonel) / 93.3 cm x 53.3 cm (H x V) Display Pixels Speaker 6.6cm round x4 (Oblique cone) Audio Power Output 10W + 10W Antenna terminal (VHF / UHF) F-type connector, 75Ω unbalanced, coaxial Video / Audio Iutput S-Video [1/3/4] Mini-DIN 4 pin connector x3 [1/2/3/4] Y: 1V(p-p), 75Ω, positive (negative sync)

Component video [1/2] RCA pin jack x 3

1125i / 750p Y : 1V(p-p), 75

525i / 525p Y : 1V(p-p), 75Ω, positive (negative sync)

Audio Output RCA pin jack x2

Center Channel Input 500mV (rms), low impedance, RCA pin jack x 1 PC (RGB) Input D-sub 15pin x 1

AV COMPULINK ΙΙΙ 3.5mm mini jack x1 Digital-in HDMI connector x 1

Remote Control Unit RM-C1257G (AA/R6 TYPE battery x 2)

104.5cm x 79.1cm x 30.8cm (41-1/4” x 31-1/4” x 12-1/4”) [Included stand]

104.5cm x 72.9cm x 11.0cm (41-1/4” x 28-3/4” x 4-3/8”) [TV only] l

bs) [Included stand]

38.3kg (84.33lbs) [TV only]

UHF 14ch to 69ch : 470MHz to 806MHz

CATV 54MHz to 804MHz

Low Band : 02 to 06, A-8 by 02 to 06&01 High Band : 07 to 13 by 07 to 13 Mid Band : A to I by 14 to 22 Super Band : J to W by 23 to 36 Hyper Band : W+1 to W+28 by 37 to 64 Ultra Band : W+29 to W+84 by 65 to 94, 100 to 125 Sub Mid Band : A4 to A1 by 96 to 99

SIF

41.25MHz (4.5MHz)

3.58MHz

42V wide aspect (16:9)

H: 852 pixels / V: 480 pixels

C: 0.286V(p-p), (Burst signal), 75 Video 1V(p-p), 75Ω, negative sync, RCA pin jack x4 Audio 500mV(rms) (-4dBs), high impedance, RCA pin jack x8

Ω

, 3-value sync : ±0.35V(p-p)

Pb/Pr : ±0.35V(p-p), 75

Pb / Pr : 0.7V(p-p), 75

VARI More than 0 - 1000mV(rms) (+2.2dBs)

FIX 500mV (rms) (-4dBs), low impedance (400Hz when modulated 100%)

R/G/B : 0.7V (p-p), 75

HD / VD : 1V (p-p) to 5V (p-p), high impedance

VGA : 640 pixels x 480 pixels (Horizontal : 31.5kHz / Vertical : 60Hz)

(Digital-in terminal is not compatible with picture signals of personal computer.) Video Digital : HDMI connector Audio Digital : HDMI connector

Analog : 500mV(rms) (-4dBs), high impedance, RCA pin jack x 2

[W-VGA]

Ω

Contents

Ω

Design & specifications are subject to change without notice.

1-2 (No.YA099)

Page 3

SECTION 1

PRECAUTION

1. 1 SAFETY PRECAUTIONS

(1) The design of this product contains special hardware,

many circuits and components specially for safety purposes. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. 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 : ( GND, the ISOLATED (NEUTRAL) : ( EARTH : (

) side GND. Don't short between the LIVE

) side GND and

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 10kΩ 2W resistor to the anode button.

) side

(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 1500Ω 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 1000Ω/V, OR MORE SENSITIVITY)

0.15µF AC-TYPE

PLACE THIS PROBE

1500Ω 10W

GOOD EARTH GROUND

ON EACH EXPOSE ME TA L PA RT

(No.YA099) 1-3

Page 4

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 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

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.

150 mm or

150 mm

200 mm or 200 mm

50 mm

50 mm or more

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.

150 mm or more

150 mm

200 mm 200 mm

or more

50 mm

50 mm or more

1-4 (No.YA099)

The supplied hook for tipfall prevention

Page 5

1. 3 PRECAUTIONS REGARDING PDP

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.

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.

1.3.4 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.

1.3.5 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.

1.3.3 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.

(No.YA099) 1-5

Page 6

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

2.1 FEATURES

2.1.1 HIGH-DEFINITION IMAGE TECHNOLOGY (DIST)

• 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.

2.1.2 MAIN FUNCTION

•

DIGITAL NOISE CLEAR

With digital noise clear, this helps take our static or noise from a channel that may not be coming in clearly.

• NATURAL CINEMA

Natural cinema corrects the problem of blurred edges which may occur when viewing a program originally shot on film (such as motion pictures) or animation. If you notice blurring at the edges of these programs, choose NATURAL CINEMA and set it to AUTO.

•

COLOR MANAGEMENT

This TV supports the COLOR MANAGEMENT function to ensure dull colors are compensated to produce natural hues.

•

DYNAMIC GAMMA

JVC's Dynamic Gamma Circuitry (DGC) makes it easier to see dark areas when a picture has many dark areas, and makes it easier to see the bright areas when a picture has many bright areas. DGC is turned on, DGC analyzes and adjusts the total level of picture brightness balance, especially in dark areas where the level of greyscale is often lost, turning completely to black.

• MTS (Multi-Channel Television Sound)

MTS technology allows several audio signals to be broadcast at once, giving you a choice in what you wish to hear with a TV program. In addition to mono or stereo sound, an MTS broadcast may also include a second audio program (SAP).

• THEATER PRO D6500K

The TheaterPro D6500K color temperature technology function makes sure that the video you watch is set to the standard color temperature, so that what you see is as true to what the film to video editors intended it to be.

• V-CHIP

Your TV is equipped with V-Chip technology which enables you to block channels or content that you feel to be inappropriate for children, based on US and Canada rating guidelines. V-Chip has no effect on video signals from a DVD discs, VCR tapes or Camcorder connection.

• AUTO SHUT OFF

This function automatically shuts off your TV when there is no signal from the channel the TV is on.

2.1.3 ASPECT CONTROL

The screen size can be changed according to the picture aspect ratio.

• ASPECT function

Desired screen size (PANORAMA / CINEMA / FULL / HD PANORAMA / REGULAR / CINEMA ZOOM) can be selected.

2.1.4 MULTI-SCREEN FUNCTION

• Twin-pictures function

With the function, two pictures can be displayed at the Twin pictures mode.

• Index-picture function

With this function, one of index-picture (12 pictures) can be displayed at the same time.

• Freeze function

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.

2. 2 MAIN DIFFERENCE LIST

Item PD-42V475/S PD-42V485/S

FRONT PANEL COLOR SILVER BLACK SMART SOUND NO YES SMART CAPTION NO YES

1-6 (No.YA099)

Page 7

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) horizontally and 1.110mm 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 horizontally and 1.110mm vertically.

Direction

Vertically

No.1

Pixel line

No.2

Pixel line

No.479

Pixel line

No.480

Pixel line

Horizontally

No.1 Pixel

sequence

B G R B G R

(Horizontally) Pixel pitch

RBGR

G RBG R

GRBGR

1.095mm

No.2 Pixel

sequence

1 pixel (1 dot)

B Cell

Cell

R Cell

No.851 No.852

Pixel

sequence

Pixel

sequence

B GRBG R

BGRBGR

G RBG R

GRBGR

0.365mm

(Horizontally) Cell pitch

1.110 mm (Vertically)

Pixel pitch

(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 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.YA099) 1-7

Page 8

2.3.2 CHASSIS CPU [DIGITAL SIGNAL PWB : IC7001] PIN FUNCTION

Pin No.

Pin name I/O Function

1 NC O Not used 2 P_MU O Video muting [Muting : H] 3 FUNC_LED O Not used 4 A_MU O Audio muting [Muting : H] 5 M_MU O Not used 6 PC_SW O PC input select [ON : H] 7 DIMMER_LED O Power LED dimmer control

Pin No.

61 GND - GND 62 DIN_PH I Optical DET. out 63 ATSC_REC I Not used 64 YS1 I Not used 65 YS2 I Not used 66 3.3V I 3.3V 67 DIN_PRO O Digital-in voltage detection

[Low dimmer : L] 8 NC O Not used 9 NC O Not used 10 NC O Not used 11 POW_LED O Power LED control [ON : H] 12 WORD O Programming control 13 SBT2 I Clock for main CPU communication 14 SBI2 I Data receive for main CPU

communication 15 SBO2 O Data transmission for main CPU

communication 16 REQ O Request for main CPU

communication

68 NC O Not used 69 NC O Not used 70 NC O Not used 71 NC O Not used 72 NC O Not used 73 SBD5 I/O Flash writing for chassis CPU 74 SBT5 I Flash writing for chassis CPU 75 3.3V I 3.3V 76 NC I Not used 77 REMOCON I Remote control 78 V_SYNC I Vertical sync

79 WAKEUP_SHM I Sleep state release for chassis 17 3.3V I 3.3V 18 NC O Not used 19 GND - GND

80 POWERGOOD I Power error detection [Detection : H]

81 REC_LED O Stand-by power LED control 20 3.3V I 3.3V 21 NC O Not used 22 3.3V I 3.3V 23 OSCI I 16MHz for system clock

82 RST I Chassis CPU reset [Reset : L]

83 3.3V I 3.3V

84 SCL3A O I 24 OSCO O 16MHz for system clock 25 3.3V I 3.3v 26 NC O Not used 27 A92_RST O 3D YC separation reset [Reset : L] 28 NC O Not used

85 SDA3A I/O I 29 LIP_RST O Not used 30 NC O Not used 31 NC I Not used 32 NC O Not used 33 MDR_CON I Not used

86 SCL3B O I 34 3.3V I 3.3V 35 NC O Not used 36 DsyncSW2 O Digital sync signal select

[Digital sync : L] 37 NC O Not used 38 NC O Not used

87 SDA3B I/O I 39 HOTPLUG I Not used 40 MECA_SW I Power switch monitor [ON : L] 41 MAIN_POW O Main power control [ON : L] 42 VARI / FIX O Audio out select [VARI : L / FIX : H] 43 0V - GND 44 NC I Not used 45 AFT1 I AFT detection [Detection : H] 46 NC I Not used 47 NC I Not used 48 NC O Not used 49 NC O Not used 50 NC I Not used 51 NC O Not used 52 NC I Not used 53 NC O Not used 54 3.3V I 3.3V 55 PDP_TX O 56 PDP_RX I

PDP communication for panel CPU PDP communication for panel CPU

57 SDA0 I/O I2C bus data (for chassis memory)

88 DIN_sel O Not used

89 LR_SW O Digital-in control

90 DIN_INT O Digital-in reset [Reset : H]

91 DVI_RST O Not used

92 GND - GND

93 SCL5055 O I2C bus clock (for DIST)

94 NC O Not used

95 SDA5055 I/O I2C bus data (for DIST)

96 NC O Not used

97 NC O Not used

98 15K/OTH O Y signal select for 3D YC separation

99 DsyncSW1 O Not used

100 JCC5057_BUSY I Busy for gamma correction / color 58 SCL0 O I2C bus clock (for chassis memory) 59 SDA_DVI I/O Not used 60 SCL_DVI I/O Not used

Pin name I/O Function

[Detection : H]

CPU [Relese : L]

[Stand-by :H]

C bus clock (for 3D YC separation, gamma correction / color management / RGB process / OSD composition, U / V frontend, HDMI driver)

C bus data (for 3D YC separation, gamma correction / color management / RGB process / OSD composition, U / V frontend, HDMI driver)

C bus clock (for video / audio select, color demod. / sync sep., 3 line comb filter, component video / audio select, sync sep. / SW / detect, MTS demod. / surround / audio control)

C bus data (for video / audio select, color demod. / sync sep., 3 line comb filter, component video / audio select, sync sep. / SW / detect, MTS demod. / surround / audio control)

[525i : H / other : L]

management / RGB process / OSD composition [Busy : H]

1-8 (No.YA099)

Page 9

2.3.3 MAIN CPU [DIGITAL SIGNAL PWB : IC7601] PIN FUNCTION

Pin No.

Pin name I/O Function

1 VHOLD1 I Data slicer (closed caption) for main 2 HFLT1 I/O

LPF of video signal (closed caption) 3 NC I/O Not used 4 NC I/O Not used 5 DIGR0 O Red for OSD 6 TB1in I Clock information 7 REMO I Remote control 8BYTE -GND 9 CNVss I

CPU mode select [CPU : L / Writing : H] 10 DIGG0 O Green for OSD 11 DIGB0 O Blue for OSD 12 RESET I Main CPU reset [Reset : L] 13 Xout O 16MHz for system clock 14 Vss - GND 15 Xin I 16MHz for system clock 16 Vccl I 3.3V 17 OSC1 I Clock input for OSD 18 OSC2 O Not used 19 INT1 I AV COMPULINK

ΙΙΙ

20 INT0 I Request for chassis CPU

communication 21 OUT1 O YS for OSD 22 OUT2 O YM for OSD 23 NC I/O Not used 24 NC I/O Not used 25 NC I/O Not used 26 NC I/O Not used 27 CTA2/RTS2 I/O Not used 28 CLK2 I/O Not used 29 RxD2 I/O Not used 30 TxD2 I/O Not used 31 SDA2 I/O Not used 32 DIGR1 O Red for OSD 33 DIGG1 O Green for OSD 34 DIGB1 O Blue for OSD 35 TxD0 I Programming control 36 RxD0 O Flash writing for main CPU 37 CLK0 I Programming clock 38 RTS0 I/O Busy for flash writing composition

[Busy : H] 39 P5.7 I Not used 40 P5.6 O Not used 41 HOLD I Main CPU hold for flash writing

[Hold : L] 42 P5.4 O Not used 43 P5.3 O Not used 44 P5.2 O Not used 45 P5.1 O Not used 46 WR O

CPU mode select [CPU : L / Writing : H] 47 P4.7 O Data transmission for chassis CPU

communication 48 P4.6 I Data receive for chassis CPU

communication 49 P4.5 O Clock for chassis CPU

communication 50 P4.4 I/O Not used 51 NC I/O Not used 52 NC I/O Not used 53 NC I/O Not used 54 NC I/O Not used 55 NC I/O Not used 56 NC I/O Not used 57 NC I/O Not used 58 NC I/O Not used 59 NC I/O Not used

Pin No.

Pin name I/O Function

60 NC I/O Not used 61 NC I/O Not used 62 HSYNC I Horizontal sync for OSD 63 NC I/O Not used 64 VSYNC I Vertical sync for OSD 65 NC I/O Not used 66 NC I/O Not used 67 NC I/O Not used 68 NC I/O Not used 69 NC I/O Not used 70 NC I/O Not used 71 NC I/O Not used 72 NC I/O Not used 73 NC I/O Not used 74 NC I/O Not used 75 NC I/O Not used 76 NC I/O Not used 77 NC I/O Not used 78 NC I/O Not used 79 NC I/O Not used 80 NC I/O Not used 81 NC I/O Not used 82 NC I/O Not used 83 NC I/O Not used 84 WAKE O Sleep state release for chassis

CPU [Relese : L] 85 CARD_DET I/O Not used 86 POWER_SW I Main power switch [ON : L] 87 SDAM O I2C bus clock (for main memory) 88 SCLM I/O I2C bus Data (for main memory) 89 DIGR2 O Red for OSD 90 DIGG2 O Green for OSD 91 DIGB2 O Blue for OSD 92 NC I/O Not used 93 KEY2 I Key scan data 1 [ON :H] 94 KEY1 I Key scan data 2 [ON :H] 95 VHOLD2 I Data slicer (closed caption) for sub 96 HLF2 I/O LPF of video signal (closed caption) 97 CVIN2 I Composite video input for closed

caption (SUB-CCD) 98 TVSETB - GND 99 VCCE - 5V 100 CVIN1 I Composite video input for closed

caption (MAIN-CCD)

(No.YA099) 1-9

Page 10

2.3.4 PANEL CPU [INTERFACE PWB : IC807] PIN FUNCTION

Pin No.

Pin name I/O Function

1 SYSTEM0 I PDP size select

[1.75V : 42V VGA 3.25V : 35V VGA]

2 SYSTEM3 I PDP maker select

[0V : SAMSUNG 3.25V : NEC] 3 AVCC I 5.0V 4 X2 - Not used 5X1 -GND 6 VCL - GND 7 RES I Reset [Reset : L] 8 TEST I GND 9 VSS - GND 10 OSC2 O 16MHz for system clock 11 OSC1 I 16MHz for system clock 12 VCC I 5.0V 13 PW_LOB O Power control [ON : L] 14 PANEL_PW_ON O Panel power control [ON : L] 15 TALK_RST O Not used 16 CODEC_RST O Not used 17 I2C_STOP O I2C bus stop control [Stop : L] 18 NC O Not used 19 NC O Not used 20 NC O Not used 21 NC O Not used 22 NC O Not used 23 SDA1 I/O I2C bus data (for panel memory) 24 FAN O Not used 25 SCL1 O I2C bus clock (for panel memory) 26 SDA0 I/O I

27 SCL0 O I

C bus data (for BBE / surround /

audio control, temp. sensor)

C bus clock (for BBE / surround /

audio control, temp. sensor) 28 SDA2 I/O 29 SCL2 O

I2C bus data (for PDP communication)

I2C bus clock (for PDP communication) 30 NC O Not used 31 SDA3 I/O Not used 32 SCL3 O Not used 33 NC O Not used 34 NC O Not used 35 NMI I Port for writing on board control

[Writing : L] 36 A_MU O Audio muting [Muting : H] 37 (HD) I Not used 38 ON_TIMMER O Not used 39 REMO I Not used 40 POWERLED O Not used 41 P85 I Emulator connection / Port for

writing on board [Writing : H] 42 P86 I Emulator connection 43 P87 I Emulator connection 44 SCK3 O Port for writing on board 45 RXD I Port for writing on board 46 TXD O Port for writing on board 47 AC_DET I AC power frequency detection

[Detection : H] 48 NC O Not used 49 RXD2 I Data receive for main CPU

communication 50 TXD2 O Data transmision for main CPU

communication 51 NC O Not used 52 MECA_SW I Not used 53 VD I Vertical sync 54 REC_DET I Not used

Pin No.

Pin name I/O Function

55 I2C_READY I PDP I2C communication select

[Prohibition : L Permission : H] 56 FAN_LOCK I Not used 57 SYSTEM2 I Not used 58 SYSTEM 1 I Not used 59 THEM_DET I

Temp. sensor detection [Detection : H] 60 (AMP_PRO2) - GND 61 AMP_PRO1 I Not used 62 EE_CDS I Not used 63 KEY_IN1 I Not used 64 KEY_IN2 I Not used

1-10 (No.YA099)

Page 11

SECTION 3

LOB OK FAN OK SYNC M:OK S:OK HD:NG TIM OK MSM OK DIGI 0000 MEM OK AVSW OK YC OK AIO OK TUN OK GCR NG 1 IP OK RGB OK 8 DVI OK HDMI OK

SERVICE MENU

1.ADJUST

2.SELF_CHK

3.I2C STOP

DISASSEMBLY

3.1 SYSTEM SETTEING

When the DIGITAL SIGNAL PWB is replaced or the DIGITAL INPUT is not normal, SYSTEM SETTING in the following procedure.

(1) Press the [SLEEP TIMER] key, and set it to 0 minutes. (2) Press the [DISPLAY] key and the [VIDEO STATUS] key

simultaneously, then the SERVICE MENU screen will be displayed.

(3) In the SERVICE MENU, press the [2] key. Then, the SELF-

CHECK screen will be displayed.

(4) Turn off the power by pressing the [POWER] key on the

remote control unit.

SERVICE MENU SCREEN

SERVICE MENU

1.ADJUST

2.SELF_CHK

3.I2C STOP

SELF-CHECK SCREEN

LOB OK FAN OK SYNC M:OK S:OK HD:NG TIM OK MSM OK DIGI 0000 MEM OK AVSW OK YC OK AIO OK TUN OK GCR NG 1 IP OK RGB OK 8 DVI OK HDMI OK

SOLDER SIDE

RECEIVER PWB

IC3106

Masking tape

Fig. 2

3.2.1 REMOVING THE REAR COVER (Fig.3)

(1) Remove the power cord. (2) Remove the 4 screws [A], and remove the STAND COVER. (3) Remove the 2 screws [B] and the 6 screws [C]. (4) Remove the TABLE TOP STAND. (5) Remove the 15 screws [D], the 4 screws [E], the 8 screws

[F], and remove the REAR COVER.

CAUTION:

• Prior to starting the work, be sure to read the following written

instructions on the CAUTION LABEL attached to the REAR COVER.

Fig. 1

3.2 DISASSEMBLY PROCEDURE

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.

• Pay extra attention in the following matter when turning the

power on with the REAR COVER removed. (1) Prior to disassembly, unplug the power cord from the AC

outlet without fail. (Turn the power "off".)

(2) Make sure that the

RECEIVER PWB: IC3106

covered with black masking tape. (Fig.2)

(3) Make sure to remove the masking of

IC3106

when attaching the REAR COVER.

(4) Do not turn the power on until the REAR COVER is

attached properly, after the masking is removed.

is completely

RECEIVER PWB:

3.2.2 REMOVING THE TERMINAL COVER AND CENTER COVER (Fig.3)

• Remove the REAR COVER.

(1) Remove the 7 screws [G], and remove the CHASSIS

SHIELD COVER.

(2) Remove the 6 screws [H], and remove the CENTER

COVER.

(3) Remove the 6 screws [I], the 12 screws [J], the 1 screw

[K], the 1 nut [L], the 1 washer [M], and remove the TERMINAL COVER.

(No.YA099) 1-11

Page 12

(x11)

(x6)

REAR COVER

STAND COVER

(x4)

(x8)

TABLE TOP STAND

(x2)

(x6)

(x7)

CENTER COVER

(x12)

(x2)

CHASSIS SHIELD

TERMINAL COVER

(x2)

COVER

TOP

1-12 (No.YA099)

Fig. 3

Page 13

3.2.3 REMOVING THE AUDIO PWB (Fig. 4)

• Remove the REAR COVER.

(1) Remove the 4 screws [N], and remove the AUDIO CHASSIS

COVER.

(2) Disconnect the connectors [CN600B], [CN600C],

[CN600Y], [CN60SL], [CN60SR] from the AUDIO PWB.

(3) Remove the 4 screws [O], 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.4)

• Remove the REAR COVER.

• Remove the CENTER COVER.

• Remove the CHASSIS SHIELD COVER.

• Remove the TERMINAL COVER.

(1) Disconnect the connectors [CN0J01], [CN0J02] from the

AV JACK PWB.

(2) Remove the 4 screws [P], and 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.4)

• 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] 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.4)

• 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.4)

• 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

the 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.

3.2.8 REMOVING THE RECEIVER PWB (Fig.4)

• Remove the REAR COVER.

• Remove the CENTER COVER.

• Remove the CHASSIS SHIELD COVER.

• Remove the TERMINAL COVER.

(1) Disconnect the connectors [CN00A], [CN00T] from the

RECEIVER PWB.

(2) 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.4)

• 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 [CN001], [CN002], [CN00D],

[CN00F], [CN00G], [CN0J1], [CN0J2] 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.

3.2.10 REMOVING THE DIGITAL SIGNAL PWB (Fig.4)

• 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.

CAUTION:

• Make sure to perform the "SYSTEM SETTING" on page

1-11, when DIGITAL SIGNAL PWB is replaced.

3.2.11 REMOVING THE MAIN BASE, CHASSIS BASE AND AUDIO PWB BASE (Fig.4)

• 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.YA099) 1-13

Page 14

RECEIVER PWB

INTERFACE PWB

(x4)

(x2)

ANALOG SIGNAL PWB

(x5)

DIGITAL SIGNAL PWB

DIGITAL TEMINAL COVER

MAIN BASE

(x4)

REGULATOR PWB

LINE FILTER

PWB

(x4)

AC INLET PANEL

CHASSIS BASE

AV JACK PWB

(x4)

AUDIO CHASSIS COVER

AUDIO PWB

1-14 (No.YA099)

AUDIO PWB BASE

TOP

Fig. 4

Page 15

3.2.12 REMOVING THE FRONT CONTROL PWB (Fig.5)

• Remove the REAR COVER.

• Remove the CENTER COVER.

(1) Remove the 4 screws [d] and the 2 screws [e]. (2) Disconnect the connectors [CN00F], [CN00T] from the

FRONT CONTROL PWB.

(3) 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.5)

• Remove the REAR COVER.

• Remove the CENTER COVER.

• Remove the FRONT CONTROL COVER.

(1) Remove the 2 screws [f], and withdraw 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.5)

• 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.

3.2.17 REMOVING THE PDP UNIT (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 TEMP. SENSOR PWB.

• Remove the MAIN POWER PWB.

• Remove the SUB POWER PWB.

(1) Remove the 8 screws [k] and the 8 screws [m], 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.

3.2.15 REMOVING THE MAIN POWER PWB (Fig.5)

• Remove the REAR COVER.

(1) Disconnect the connectors [CN8001], [CN8002],

[CN8003], [CN8006], [CN8008], [CN8009], [CN9001] from the MAIN POWER PWB.

(2) Remove the 7 screws [i], 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.

3.2.16 REMOVING THE SUB POWER PWB (Fig.5)

• Remove the REAR COVER.

(3) Disconnect the connectors [CN9001], [CN9005] [CN9010]

from the SUB POWER PWB.

(4) Remove the 4 screws [j], 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.

(No.YA099) 1-15

Page 16

(x4)

INSULATOR

MAIN POWER PWB

(x7)

(x4)

SUB POWER PWB

TEMP. SENSOR PWB

GAS insertion

hole

PDP UNIT

BACK FRAME

INSULATOR

POWER PWB BRACKET

(x2)

(x4)

FRONT CONTROL PWB

(x2)

1-16 (No.YA099)

TOP

Fig. 5

FRONT LED PWB

FRONT PWB BASE

(x2)

Page 17

3.2.18 REMOVING THE PWB IN PDP UNIT

3.2.18.1 REMOVING THE X-MAIN PWB (Fig.6)

• Remove the PDP UNIT.

(1) Disconnect the connectors [CN4001], [CN4002],

[CN4003], [CN4004], [CN4005] from the X-MAIN PWB.

(2) Remove the 8 screws [n], and remove the X-MAIN PWB.

NOTE:

• It is advisable to take note of the connecting location

(connector number) of the removed connectors.

3.2.18.2 REMOVING THE Y-MAIN PWB (Fig.6)

• 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 [o], and remove the Y-MAIN PWB.

NOTE:

• It is advisable to take note of the connecting location

(connector number) of the removed connectors.

3.2.18.5 REMOVING THE Y-BUFFER-L PWB (Fig.6)

• Remove the PDP UNIT.

(1) Disconnect the connectors [CN5501], [CN5502],

[CN5503], [CN5504], [CN5505], [CN5506] from the Y-

BUFFER-L PWB. (2) Remove the 5 screws [r], and remove the Y-BUFFER-L

PWB.

NOTE:

• It is advisable to take note of the connecting location

(connector number) of the removed connectors.

3.2.18.6 REMOVING THE E-BUFFER PWB (Fig.6)

• 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 [s], and remove the E-BUFFER PWB.

NOTE:

• It is advisable to take note of the connecting location

(connector number) of the removed connectors.

3.2.18.3 REMOVING THE LOGIC-MAIN PWB (Fig.6)

• Remove the PDP UNIT.

(1) Disconnect the connectors [CN101], [CN201], [CN401],

[CN402], [CN403], [CN803] from the LOGIC-MAIN PWB.

(2) Remove the 7 screws [p], and remove the LOGIC-MAIN

PWB.

NOTE:

• It is advisable to take note of the connecting location

(connector number) of the removed connectors.

3.2.18.4 REMOVING THE Y-BUFFER-U PWB (Fig. 6)

• Remove the PDP UNIT.

(1) Disconnect the connectors [CN5401], [CN5402],

[CN5403], [CN5404], [CN5405], [CN5406] from the YBUFFER-U PWB.

(2) Remove the 5 screws [q], and remove the Y-BUFFER-U

PWB.

NOTE:

• It is advisable to take note of the connecting location

(connector number) of the removed connectors.

(x7)

3.2.18.7 REMOVING THE F-BUFFER PWB (Fig.6)

• Remove the PDP UNIT.

(1) Disconnect the connectors [CN402], [FC1], [FC2], [FE1],

[FG1] from the F-BUFFER PWB. (2) Remove the 3screws [t], and remove the F-BUFFER PWB.

NOTE:

• It is advisable to take note of the connecting location

(connector number) of the removed connectors.

3.2.18.8 REMOVING THE G-BUFFER PWB (Fig.6)

• 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 [u], and remove the G-BUFFER

PWB.

NOTE:

• It is advisable to take note of the connecting location

(connector number) of the removed connectors.

X-MAIN PWB

(x8)

(x6)

(x5)

Y-BUFFER-U PWB

Y-BUFFER-L PWB

Y-MAIN PWB

E-BUFFER PWB

(x5)

Fig. 6

F-BUFFER PWB

LOGIC-MAIN PWB

(x6)

G-BUFFER PWB

(x3)

(No.YA099) 1-17

Page 18

3.2.19 REMOVING THE SPEAKER (Fig.7)

• 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 [v], and remove the SPEAKER. (2) Follow the same steps when removing the other hand

SPEAKER.

CAUTION:

• Please do not disassembly the SPEAKER.

When the speaker is decomposed, the performance cannot

be kept.

3.2.20 REMOVING THE FRONT PANEL AND THE FRONT FILTER (Fig.7)

• 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.

(1) Remove the 8 screws [w]. (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 [x], and remove the FILTER

BRACKET. (5) Remove the FRONT FILTER.

3.2.21 REMOVING THE TOP FRAME, BOTTOM FRAME AND SIDE FRAME (Fig.7)

• 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 [y] and the 8 screws [z], and remove

the TOP FRAME, BOTTOM FRAMEand SIDE FRAME.

(x2)

x (x5)

SIDE FRAME

FRONT FILTER

(x2)

TOP FRAME

(x4)

(x2)

w(x4)

SIDE FRAME

BOTTOM FRAME

x (x3)

FILTER BRACKET

(x2)

x (x5)

(x3)

SPEAKER

1-18 (No.YA099)

TOP

v(x3)

FRONT PANEL

Fig. 7

Page 19

3.3 REPLACEMENT OF MEMORY IC

SERVICE MENU SCREEN

ADJUST SCREEN

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

SERVICE MENU SCREEN

wall outlet.

2. Replacing the memory IC

Replace the memory IC with new one. Be sure to use the memory IC written with the initial data values.

SERVICE MENU

1. ADJUST

2. SELF_CHECK

3. I2C STOP

3. Power on

Plug the power cord into the wall outlet and switch the power on.

4. Receive channel setting

Refer to the OPERATING INSTRUCTIONS and set the receive channels (channels preset).

5. User setting

ADJUST SCREEN

Check the user setting values in Table 1 to Table 5. If setting value is different, set the correct value. For setting, refer to the OPERATING INSTRUCTIONS.

6. Setting of SERVICE MENU

Verify the setting for each setting item in the SERVICE

S001 PREPATE 0 NTSC3 FULL STD L

MENU.(See Table 6.) If readjustment is necessary, perform adjustment referring to “ADJUSTMENTS PROCEDURE”.

3.3.3 FACTORY SETTING VALUE

3.3.3.1 SETTING OF SWITCHS ON FRONT SIDE OF MAIN BODY

Setting item Setting value

POWER OFF CHANNEL CABLE-02 VOLUME 10 INPUT TV

Table 1

3.3.3.2 SETTING OF REMOTE CONTROL UNIT

Setting item Setting value

DISPLAY OFF ASPECT PANORAMA VIDEO STATUS DYNAMIC MULTI PICTURE 1 SCREEN A.H.S OFF BBE ON SMART SOUND [PD-42V485/S] AHB ON

OFF

CLOSED CAPTION OFF

Table 2

Fig.1

(No.YA099) 1-19

Page 20

3.3.3.3 SETTING OF MENU SCREEN

(1) PICTURE ADJUST

VIDEO STATUS

Setting item

STANDARD DYNAMIC GAME THEATER

NTSC HD NTSC HD NTSC HD NTSC HD

PICTURE 00 00 +05 +05 -05 -05 0 0 00 BRIGHT 00 0 0 00 00 0 0 00 00 00 COLOR 00 00 00 00 -03 -03 00 00 TINT 0 0 0 0 00 0 0 00 00 0 0 00 DETAIL 00 00 +05 +05 -03 -03 00 00 COLOR TEMPERATURE LOW LOW HIGH HIGH HIGH HIGH HIGH LOW DIGI. NOISE CLEAR OFF OFF OFF OFF OFF OFF OFF OFF NATURAL CINEMA ON ON ON ON ON ON ON ON COLOR MANAGEMENT ON ON ON ON ON ON ON ON DYNAMIC GAMMA ON ON O N O N ON ON O N O N

Table 3

(2) SOUND ADJUST

Setting item Setting value

BASS Center TREBLE Center BALANCE Center MTS STEREO

Table 4

(3) INITIAL SET UP

Setting item Setting value

TV SPEAKER ON AUDIO OUT FIX DIGITAL-IN SIZE1 DIGITAL-IN AUDIO DIGITAL CENTER CH INPUT OFF NOISE MUTING ON FRONT PANEL LOCK OFF V1 SMART INPUT OFF VIDEO INPUT LABEL Space

POSITION ADJUSTMENT CENTER POWER INDICATOR HIGH IMAGE SHIFT STD LANGUAGE ENG. COLSED CAPTION OFF AUTO SHUT OFF OFF XDS ID ON V-CHIP OFF AUTO DEMO OFF

Setting item Setting value

Table 5

3.3.3.4 SERVICE MENU SETTING ITEMS

Service menu Setting item

1. ADJUST

2. SELF CHECK

3. I2C STOP

S001 ~ S039

T001 ~ T010

P001 ~ P010

D001 ~ D187

Z001 ~ Z010

[Refer to “SECTION 5

TROUBLESHOOTING” (page 1-31)]

[Do not adjust]

Table 6

CAUTION

When a number key other than the [1] to [3] key is pressed in the SERVICE 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 SERVICE MENU.

1-20 (No.YA099)

Page 21

3.4 REPLACEMENT OF CHIP COMPONENT

3.4.1 CAUTIONS

(1) Avoid heating for more than 3 seconds. (2) Do not rub the electrodes and the resist parts of the pattern. (3) When removing a chip part, melt the solder adequately. (4) Do not reuse a chip part after removing it.

3.4.2 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.

3.4.3 REPLACEMENT STEPS

1. How to remove Chip parts

[Resistors, capacitors, etc.]

(1) As shown in the figure, push the part with tweezers and

alternately melt the solder at each end.

(2) Shift with tweezers and remove the chip part.

2. How to install Chip parts

[Resistors, capacitors, etc.]

(1) Apply solder to the pattern as indicated in the figure.

(2) Grasp the chip part with tweezers and place it on the

solder. Then heat and melt the solder at both ends of the chip part.

[Transistors, diodes, variable resistors, etc.]

(1) Apply extra solder to each lead.

SOLDER

(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.

Note :

After removing the part, remove remaining solder from the pattern.

[Transistors, diodes, variable resistors, etc.]

(1) Apply solder to the pattern as indicated in the figure. (2) Grasp the chip part with tweezers and place it on the

solder.

(3) First solder lead A as indicated in the figure.

(4) Then solder leads B and C.

(No.YA099) 1-21

Page 22

SECTION 4

SERVICE MENU SCREEN

ADJUST SCREEN

ADJUSTMENT

4.1 ADJUSTMENT PREPARATION

(1) You can make the necessary adjustments for this unit

with either the remote control unit or with the adjustment equipment and parts as given below.

(2) Adjustment with the remote control unit is made on the

basis of the initial setting values, however, the new setting values which set the screen to its optimum condition may differ from the initial settings.

(3) Make sure that AC power is turned on correctly. (4) Turn on the power for the set and test equipment before

use, and start the adjustment procedures after waiting at least 30 minutes.

(5) Unless otherwise specified, prepare the most suitable

reception or input signal for adjustment.

(6) Never touch any adjustment parts, which are not specified

in the list for this variable resistors, transformers, trimmer capacitors, etc.

(7) Presetting before adjustment.

Unless otherwise specified in the adjustment instructions, preset the following functions with the remote control unit.

4. 2 PRESETTING BEFORE ADJUSTMENT

Unless otherwise specified in the adjustment instructions, preset the following functions with the remote control unit.

Setting item Settings

VIDEO STATUS STANDARD PICTURE adjustments All center (00) COLOR TEMPERATURE LOW DIGI. NOISE CLEAR OFF COLOR MANAGEMENT ON DYNAMIC GAMMA ON SOUND adjustments All center (00) A.H.S OFF BBE ON AHB ON MTS STEREO SMART SOUND [PD-42V485/S] AUDIO OUT FIX ASPECT FULL

OFF

4.4 BASIC OPERATION OF THE SERVICE MENU

4.4.1 TOOL OF SERVICE MENU OPERATION

Operate the SERVICE MENU with the remote control unit.

4.4.2 HOW TO ENTER THE SERVICE MENU

(1) Press the [SLEEP TIMER] key, and set it to 0 minutes. (2) Press the [DISPLAY] key and the [VIDEO STATUS] key

simultaneously, and the SERVICE MENU screen of Fig.1 will be displayed.

4.4.3 SELECT THE SERVICE MENU ITEM

(1) When the Main Menu is displayed, press any key of the [1]

to [3] key to enter the corresponding menu mode.

CAUTION:

4.4.4 SELECT THE SETTING ITEM AND SETTING VALUE

(1) Select the service item using the [CHANNEL +/– (/)]

key. (2) Set the value using the [VOLUME +/– ( (3) Press the [MUTING] key to memorize the set value.

/)] key.

SERVICE MENU SCREEN

SERVICE MENU

1. ADJUST

2. SELF_CHECK

3. I2C STOP

ADJUST SCREEN

4.3 MEASURING INSTRUMENT AND FIXTURES

• DC voltmeter (or Digital voltmeter)

• Oscilloscope

• Signal generator (Pattern generator)

[NTSC / 525i COMPONENT / 1125i / PC (VGA)]

• Audio multiplex signal generator

• Remote control unit

1-22 (No.YA099)

S001 PREPATE 0 NTSC3 FULL STD L

Fig.1

4.4.5 HOW TO EXIT THE SERVICE MENU MODE

Press the [MENU] key to exit the Service Menu mode.

Page 23

4.4.6 SERVICE CONTROL KEY LAYOUT ON THE REMOTE CONTROL UNIT

CATV VCR

MULTI SCREEN

FREEZE

DISPLAY

SOUND

MUTING

VOL

VCR CHANNEL

PREV NEXT

REC

DVD

TWIN

SWAP

TUNE

ASPECT

CH +

CH Ð

VCR/DVD

PLAY FFREW

STOP PAUSE

RM-C1257G

INDEX

SELECT

POWER

C.C.

INPUT

RETURN+

LIGHT

VOL

BACK

TV/VCR

STILL/PAUSE

1 3

CHANNEL +/-- (/)

DISPLAY

SLEEP TIMER

VIDEO STATUS

MUTING

VOLUME +/-- (/)

SLEEP TIMER

VIDEO STATUS

THEATER PRO

OPEN/CLOSE

Fig.2

4.4.7 SETTING OF THE SERVICE MENUS

4.4.7.1 [1.ADJUST]

[Do not change setting values of items that are not included in the “ADJUSTMENT PROCEDURE”. They are fixed values]

Set output data of the port of the video, audio, panel control, drive and main CPU setting.

(1)

SIGNAL

The signal displayed on the screen is displayed.

NTSC3 : 525i (Composite / S-video) 525I : 525i (Component) 525P : 525p 750P : 750p 1125I6 : 1125i 60Hz H525I : HDMI525i H525P : HDMI525p H750P : HDMI750p H125I6 : HDMI1125i PCVGA : PC (VGA)

SCREEN SIZE / MULTI PICTURE

(2)

State of the SCREEN SIZE or MULTI PICTURE is displayed.

• SCREEN SIZE

1409 : FULL 1609 : PANORAMA, HD PANORAMA 1609S : CINEMA, CINEMA ZOOM FULL : REGULAR

• MULTI PICTURE

FRZ : 2 pictures STD : 12 pictures

PICTURE MODE

(3)

The PICTURE MODE is displayed.

STD : STANDARD DYN : DYNAMIC TH : THEATER GAME : GAME

(4)

COLOR TEMP.

The COLOR TEMP. is displayed.

H : HIGH M : LOW

ITEM No.

(5)

The ITEM No. is displayed.

• [CHANNEL +/– (/)] key

For scrolling up / down the setting items.

→→

→ S001...

→→

↔↔

↔ T001...

↔↔

↔ P001...

↔↔

↔ D001...

↔↔

↔ Z001...

↔↔

←←

←

←←

• [SLEEP TIMER] key

For seitching to next items.

→→

→ S001

→→

→ T001

→→

→ P001

→→

→ D001

→→

→ Z001

→→

(6 ) SETTING VALUE

The SETTING VALUE is displayed.

• [VOLUME +/– (/)] key

For scrolling up / down the setting values.

Item No. Setting items

S001~S039 This item adjusts the setting values of the video

circuit.

T001~T010 This item adjusts the setting values of the

audio circuit.

P001~P010 This item adjusts the setting values of the

panel control circuit.

D001~D187 This item adjusts the setting values of the drive

circuit.

Z001~Z010 This item adjusts the setting values of the main

CPU circuit.

4.4.6.2 [2.SELF CHECK]

[Refer to “SECTION 5 TROUBLESHOOTING” (page 1-31)]

4.4.6.3 [3.I2C STOP]

[Setting for this item is not required in servicing]

(5) ITEM NO.

S001 PREPATE 0 NTSC3 FULL STD L

(1) SIGNAL (3) PICTURE MODE

(2) SCREEN SIZE / MULTI PICTURE

(6) SETTING VALUE

(4) COLOR TEMP.

Fig.3

(No.YA099) 1-23

Page 24

4.5 INITIAL SETTING VALUES IN THE SERVICE MENU SETTING MODE

• Perform fine-tuning based on the “initial setting values” using the remote control when in the SERVICE MENU setting mode.

• The “initial setting values” serve only as an indication rough standard and therefore the values with which optimal display can be

achieved may be different from the initial setting values. But, don't change the values that are not written in “ADJUSTMENT PROCEDURE”. They are fixed values.

4.5.1 [1.ADJUST]

4.5.1.1 VIDEO SYSTEM

Item No. Item

S001 PREPARE 000~031 000 S002 NTSC BL 000~015 000 S003 NTSC CNT 000~255 033 S004 NT CR OF 000~015 006 S005 NT CB OF 000~015 006 S006 525i BL 000~015 000 S007 525i CNT 000~255 033 S008 5i CB OF 000~015 000 S009 5i CR OF 000~015 000 S010 5i CR GN 000~015 006 S011 5i CB GN 000~015 006 S012 HD BL 000~063 057 S013 HD CB OF 000~063 054 S014 HD CR OF 000~063 055 S015 RT CONT 000~015 007 S016 RT CB OF 000~015 002 S017 RT CR OF 000~015 002 S018 RT CL GA 000~015 004 S019 PC CL MB 000~007 000 S020 PC CL LB 000~031 000 S021 PC CL MR 000~007 000 S022 PC CL LR 000~031 000 S023 (NO DISPLAY) 000~255 000 S024 (NO DISPLAY) 000~255 000 S025 (NO DISPLAY) 000~255 000 S026 (NO DISPLAY) 000~255 000 S027 (NO DISPLAY) 000~255 000 S028 (NO DISPLAY) 000~255 000 S029 (NO DISPLAY) 000~255 000 S030 R DRIVE 000~255 136 S031 G DRIVE 000~255 135 S032 B DRIVE 000~255 132 S033 (NO DISPLAY) 000~255 000 S034 (NO DISPLAY) 000~255 000 S035 (NO DISPLAY) 000~255 000 S036 (NO DISPLAY) 000~255 000 S037 (NO DISPLAY) 000~255 000 S038 (NO DISPLAY) 000~255 000 S039 ILA COM 000~001 000

4.5.1.2 AUDIO SYSTEM

Item No. Item

T001 IN LEVEL 000~255 255 T002 LOW SEP 000~255 255 T003 HIGH SEP 000~255 255 T004 AFC 000~255 000 T005 (NO DISPLAY) 000~255 000 T006 ATT V ON 000~001 000 T007 ATT U ON 000~001 000 T008 ATT C ON 000~001 000 T009 (NO DISPLAY) 000~255 000 T010 (NO DISPLAY) 000~255 000

Variable range

Setting value

4.5.1.3 PANEL CONTROL SYSTEM

Item No. Item

P001 TM HOR H 00~FF 0 0 P002 TM HOR L 00~FF 00 P003 TM MIN 00~FF 39 P004 TEMP 000~255 000 P005 (NO DISPLAY) 000~255 000 P006 (NO DISPLAY) 000~255 000 P007 (NO DISPLAY) 000~255 000 P008 (NO DISPLAY) 000~255 000 P009 (NO DISPLAY) 000~255 000 P010 (NO DISPLAY) 000~255 000

4.5.1.4 DRIVE SYSTEM

Item No. Item

D001 SLV GN 00~3F 20 D002 SLVH GN 00~3F 20 D003 SLH GN 00~3F 20 D004 SLV Pf 00~03 01 D005 SLH Pf H 00~01 01 D006 SLH Pf L 00~03 03 D007 SL EGCON 00~3F 04 D008 SL EGONF 00~01 01 D009 SL CRGON 00~3F 05 D010 SL CRGON 00~01 01 D011 SL ON OF 00~01 01 D012 SV GN 00~3F 18 D013 SVH GN 00~3F 13 D014 SH GN 00~3F 2F D015 SV Pf 00~03 02 D016 SV PfH 00~01 01 D017 SV PfL 00~03 02 D018 SYL CON 00~3F 30 D019 SYL CONF 00~01 01 D020 SYH CON 00~3F 18 D021 SYH CONF 00~01 01 D022 SC CON 00~3F 36 D023 SC CNONF 00~01 01 D024 SPM BLC 00~3F 0C D025 SPM BLCO 00~01 01 D026 SLIM 00~3F 25 D027 SLIMONF 00~01 01 D028 SCRG 00~3F 08 D029 SRGONF 00~01 01 D030 S ONF 00~01 01 D031 pb GN 00~3F 15 D032 pb PfH 00~01 00 D033 pb PfL 00~03 03 D034 pb CRG 00~3F 04 D035 pb CRGON 00~01 01 D036 pb ONF 00~01 01 D037 pr GN 00~3F 15 D038 pr PfH 00~01 00 D039 pr PfL 00~03 03

Variable range

Setting value

1-24 (No.YA099)

Page 25

Item No. Item

D040 pr CRG 00~3F 04 D041 pr CRGON 00~01 00 D042 pr ONF 00~01 01 D043 ENH ONF 00~01 01 D044 (NO DISPLAY) 00~FF 00 D045 (NO DISPLAY) 00~FF 00 D046 (NO DISPLAY) 00~FF 00 D047 (NO DISPLAY) 00~FF 00 D048 (NO DISPLAY) 00~FF 00 D049 (NO DISPLAY) 00~FF 00 D050 (NO DISPLAY) 00~FF 00 D051 (NO DISPLAY) 00~FF 00 D052 (NO DISPLAY) 00~FF 00 D053 (NO DISPLAY) 00~FF 00 D054 (NO DISPLAY) 00~FF 00 D055 (NO DISPLAY) 00~FF 00 D056 (NO DISPLAY) 00~FF 00 D057 (NO DISPLAY) 00~FF 00 D058 (NO DISPLAY) 00~FF 00 D059 (NO DISPLAY) 00~FF 00 D060 (NO DISPLAY) 00~FF 00 D061 (NO DISPLAY) 00~FF 00 D062 (NO DISPLAY) 00~FF 00 D063 (NO DISPLAY) 00~FF 00 D064 (NO DISPLAY) 00~FF 00 D065 (NO DISPLAY) 00~FF 00 D066 (NO DISPLAY) 00~FF 00 D067 (NO DISPLAY) 00~FF 00 D068 (NO DISPLAY) 00~FF 00 D069 (NO DISPLAY) 00~FF 00 D070 (NO DISPLAY) 00~FF 00 D071 (NO DISPLAY) 00~FF 00 D072 (NO DISPLAY) 00~FF 00 D073 (NO DISPLAY) 00~FF 00 D074 (NO DISPLAY) 00~FF 00 D075 (NO DISPLAY) 00~FF 00 D076 (NO DISPLAY) 00~FF 00 D077 (NO DISPLAY) 00~FF 00 D078 (NO DISPLAY) 00~FF 00 D079 (NO DISPLAY) 00~FF 00 D080 (NO DISPLAY) 00~FF 00 D081 (NO DISPLAY) 00~FF 00 D082 (NO DISPLAY) 00~FF 00 D083 (NO DISPLAY) 00~FF 00 D084 (NO DISPLAY) 00~FF 00 D085 (NO DISPLAY) 00~FF 00 D086 (NO DISPLAY) 00~FF 00 D087 (NO DISPLAY) 00~FF 00 D088 (NO DISPLAY) 00~FF 00 D089 (NO DISPLAY) 00~FF 00 D090 (NO DISPLAY) 00~FF 00 D091 (NO DISPLAY) 00~FF 00 D092 (NO DISPLAY) 00~FF 00 D093 (NO DISPLAY) 00~FF 00 D094 (NO DISPLAY) 00~FF 00 D095 (NO DISPLAY) 00~FF 00 D096 (NO DISPLAY) 00~FF 00 D097 (NO DISPLAY) 00~FF 00

Variable range

Setting value

Item No. Item

D098 (NO DISPLAY) 00~FF 00 D099 (NO DISPLAY) 00~FF 00 D100 (NO DISPLAY) 00~FF 00 D101 (NO DISPLAY) 00~FF 00 D102 (NO DISPLAY) 00~FF 00 D103 (NO DISPLAY) 00~FF 00 D104 (NO DISPLAY) 00~FF 00 D105 (NO DISPLAY) 00~FF 00 D106 (NO DISPLAY) 00~FF 00 D107 (NO DISPLAY) 00~FF 00 D108 (NO DISPLAY) 00~FF 00 D109 (NO DISPLAY) 00~FF 00 D110 (NO DISPLAY) 00~FF 00 D111 (NO DISPLAY) 00~FF 00 D112 (NO DISPLAY) 00~FF 00 D113 (NO DISPLAY) 00~FF 00 D114 (NO DISPLAY) 00~FF 00 D115 (NO DISPLAY) 00~FF 00 D116 (NO DISPLAY) 00~FF 00 D117 (NO DISPLAY) 00~FF 00 D118 (NO DISPLAY) 00~FF 00 D119 (NO DISPLAY) 00~FF 00 D120 (NO DISPLAY) 00~FF 00 D121 (NO DISPLAY) 00~FF 00 D122 (NO DISPLAY) 00~FF 00 D123 (NO DISPLAY) 00~FF 00 D124 (NO DISPLAY) 00~FF 00 D125 (NO DISPLAY) 00~FF 00 D126 (NO DISPLAY) 00~FF 00 D127 (NO DISPLAY) 00~FF 00 D128 (NO DISPLAY) 00~FF 00 D129 (NO DISPLAY) 00~FF 00 D130 (NO DISPLAY) 00~FF 00 D131 (NO DISPLAY) 00~FF 00 D132 (NO DISPLAY) 00~FF 00 D133 (NO DISPLAY) 00~FF 00 D134 (NO DISPLAY) 00~FF 00 D135 (NO DISPLAY) 00~FF 00 D136 (NO DISPLAY) 00~FF 00 D137 (NO DISPLAY) 00~FF 00 D138 (NO DISPLAY) 00~FF 00 D139 (NO DISPLAY) 00~FF 00 D140 (NO DISPLAY) 00~FF 00 D141 (NO DISPLAY) 00~FF 00 D142 (NO DISPLAY) 00~FF 00 D143 (NO DISPLAY) 00~FF 00 D144 (NO DISPLAY) 00~FF 00 D145 (NO DISPLAY) 00~FF 00 D146 (NO DISPLAY) 00~FF 00 D147 (NO DISPLAY) 00~FF 00 D148 (NO DISPLAY) 00~FF 00 D149 (NO DISPLAY) 00~FF 00 D150 (NO DISPLAY) 00~FF 00 D151 (NO DISPLAY) 00~FF 00 D152 (NO DISPLAY) 00~FF 00 D153 (NO DISPLAY) 00~FF 00 D154 (NO DISPLAY) 00~FF 00 D155 (NO DISPLAY) 00~FF 00

Variable range

Setting value

(No.YA099) 1-25

Page 26

Item No. Item

D156 (NO DISPLAY) 00~FF 00 D157 (NO DISPLAY) 00~FF 00 D158 (NO DISPLAY) 00~FF 00 D159 (NO DISPLAY) 00~FF 00 D160 (NO DISPLAY) 00~FF 00 D161 (NO DISPLAY) 00~FF 00 D162 (NO DISPLAY) 00~FF 00 D163 (NO DISPLAY) 00~FF 00 D164 (NO DISPLAY) 00~FF 00 D165 (NO DISPLAY) 00~FF 00 D166 (NO DISPLAY) 00~FF 00 D167 (NO DISPLAY) 00~FF 00 D168 (NO DISPLAY) 00~FF 00 D169 (NO DISPLAY) 00~FF 00 D170 (NO DISPLAY) 00~FF 00 D171 (NO DISPLAY) 00~FF 00 D172 (NO DISPLAY) 00~FF 00 D173 (NO DISPLAY) 00~FF 00 D174 (NO DISPLAY) 00~FF 00 D175 (NO DISPLAY) 00~FF 00 D176 (NO DISPLAY) 00~FF 00 D177 (NO DISPLAY) 00~FF 00 D178 (NO DISPLAY) 00~FF 00 D179 (NO DISPLAY) 00~FF 00 D180 (NO DISPLAY) 00~FF 00 D181 (NO DISPLAY) 00~FF 00 D182 (NO DISPLAY) 00~FF 00 D183 (NO DISPLAY) 00~FF 00 D184 (NO DISPLAY) 00~FF 00 D185 (NO DISPLAY) 00~FF 00 D186 (NO DISPLAY) 00~FF 00 D187 (NO DISPLAY) 00~FF 00

Variable range

Setting value

4.5.1.5 MAIN CPU SETTING

Item No. Item

Z001 (NO DISPLAY) 00~FF 00 Z002 (NO DISPLAY) 00~FF 00 Z003 (NO DISPLAY) 00~FF 00 Z004 (NO DISPLAY) 00~FF 00 Z005 (NO DISPLAY) 00~FF 00 Z006 (NO DISPLAY) 00~FF 00 Z007 (NO DISPLAY) 00~FF 00 Z008 (NO DISPLAY) 00~FF 00 Z009 (NO DISPLAY) 00~FF 00 Z010 (NO DISPLAY) 00~FF 00

Variable range

Setting value

1-26 (No.YA099)

Page 27

4.6 ADJUSTMENT PROCEDURE

Item

Measuring instrument

Test point Adjustment part Description

PDP POWER VOLTAGE

MAIN POWER PWB voltage adjustment point

CN0C4

1 : Vs 2 : Vset 3 : Ve 4 : NC 5 : Va 6 : NC 7 : Vscan 8 : NC 9 : GND 10 : POWER 11 : PANEL POWER 12 : Vs_ON

PANEL POWER

MAIN POWER PWB

Signal generator

DC voltmeter

Resistor (1kΩ)

DC power supply

CN0C4

Vset

Vscan

GND

POWER

Vs_ON

Vscan

Connector CN0C4 Vs Vset Ve Va Vscan [MAIN POWER PWB]

Vset

Vscan

Fig. 1

Va Ve

Vset

SW1

Fig. 2

Vs VR:170V ADJ (R9424) Vset VR:160V ADJ (R9640) Ve VR:155V ADJ (R9646) Va VR:70V ADJ (R9219) Vscan VR:-60V ADJ (R9628) [MAIN POWER PWB]

Voltage adjustment VR

3.3V ~ 5.0V (DC power supply)

1kΩ (Resistor)

Voltage label

NTSC

XX XX XX XX XX

NTSC/PAL

Ve VsetVsc Vs

CAUTION:

• During adjustment operation of PDP POWER VOLTAGE,

don't touch the heat sink of the MAIN POWER PWB. If you touch it, electric shock may be caused.

< When MAIN POWER PWB is not replaced >

(1) Connect the DC voltmeter, load resistor (1kΩ), DC

power supply and switch SW1 to the CN0C4 connector and turn on the main power and switch SW1. (See Fig.2)

(2) Adjust Vs (170V ADJ) VR, Vset (160V ADJ) VR, Ve (155V

ADJ) VR, Va (70V ADJ) VR and Vscan (-60V ADJ) VR so that the Vs, Vset, Ve, Va and Vscan voltage coincides with the values in the voltage label.

(3) Input a NTSC all-black signal and check that it

coincides with the values in the voltage label.

(4) Readjust if the adjusted value is different from those

in the voltage label.

NOTE:

• Designed value for the panel is printed on a label on the

upper-right at the back of the PDP. (See Fig.3)

< When MAIN POWER PWB is replaced >

CAUTION:

• Before making adjustments, be sure not to turn on the

power when the CN8002, CN8003, CN8005, CN8006 and CN8008 connectors are connected, as this may cause the PDP to break down.

(1) Disconnect the CN8002, CN8003, CN8005, CN8006

and CN8008 connectors on the MAIN POWER PWB.

(2) Connect the DC voltmeter, load resistor (1kΩ), DC

power supply and switch SW1 to the CN0C4 connector and turn on the main power and switch SW1. (See Fig.2)

(3) Adjust Vs (170V ADJ) VR, Vset (160V ADJ) VR, Ve (155V

ADJ) VR, Va (70V ADJ) VR and Vscan (-60V ADJ) VR so that the Vs, Vset, Ve, Va and Vscan voltage coincides with the values in the voltage label.

(4) Turn off the main power and switch SW1, and connect

the CN8002, CN8003, CN8005, CN8006 and CN8008 connectors and turn on the power again.

(5) Input a NTSC all-black signal and check that it

coincides with the values in the voltage label.

(6) If the adjusted value is different from those in the

voltage label, fine-tune without unplugging the connectors.

CAUTION:

• Designated power supply voltage of the panel (Vs, Vset,

Ve, Va, Vscan) varies according to the PDP unit.

• Pay careful attention during adjustment, as any error in

procedure may cause the PDP to break down.

Fig. 3

(No.YA099) 1-27

Page 28

Item

Measuring

instrument

Test point Adjustment part Description

525i A-D OFFSET

Remote control unit

Signal generator

[1. ADJUST] S001:PREPARE (adjustment setting mode change)

S008:5i CB OF (525i blue offset) S009:5i CR OF (525i red offset)

S030:R DRIVE (Red drive) S031:G DRIVE (Green drive) S032:B DRIVE (Blue drive)

(1) Receive a 525i component ramp pattern signal.

(2) Set VIDEO STATUS to “STANDARD”.

(3) Select “1.ADFJUST” from the SERVICE MENU.

(4) Set < S030 > (Red drive), < S031 > (Green drive) and

< S032 > (Blue drive) to set “133”.

(5) Set < S001 >(adjustment setting mode change) to set

“008” and it change to the 525i A-D offset adjustment setting mode.

(6) Set < S008 > (525i blue offset) and < S009 > (525i red

offset) to lose the gap (red line, green line and blue line) which appears at both ends of a white part at the center of the screen. (See Fig.4)

(7) Set < S001 > to set “000” and it change to the normal

mode.

(8) Press the [MUTING] key to memorize the set value.

1125i BRIGHTNESS

Lose the gap (red line, green line and blue line) which appears at both ends.

Fig. 4

Remote control unit

[1. ADJUST] S001:PREPARE (adjustment setting

Signal generator

mode change)

S012:HD BL (1125i brightness)

S030:R DRIVE (Red drive) S031:G DRIVE (Green drive) S032:B DRIVE (Blue drive)

Set the 0% black part to be brightest.

(1) Receive a 1125i gray scale pattern signal .

(2) Set VIDEO STATUS to “STANDARD”.

(3) Select “1.ADFJUST” from the SERVICE MENU.

(4) Set < S030 > (Red drive), < S031 > (Green drive) and

< S032 > (Blue drive) to set “133”.

(5) Set < S001 > (adjustment setting mode change) to

set the values “012” and it change to the 1125i brightness adjustment setting mode.

(6) Set < S012 > (1125i brightness) to set the 0% black

part in the upper half of the screen to be brightest. (See Fig.5)

(7) Set < S001 > to set “000” and it change to the normal

mode.

(8) Press the [MUTING] key to memorize the set value.

1-28 (No.YA099)

Fig.5

Page 29

Item

1125i A-D OFFSET

Measuring instrument

Test point Adjustment part Description

Remote control unit

Signal generator

Minimize the red and blue noises in the upper half of the screen.

[1. ADJUST] S001:PREPARE (adjustment setting mode change)

S013:HD CB OF (1125i blue offset) S014:HD CR OF (1125i res offset)

S030:R DRIVE (Red drive) S031:G DRIVE (Green drive) S032:B DRIVE (Blue drive)

(1) Receive a 1125i 30% all-white pattern signal.

(2) Set VIDEO STATUS to “STANDARD”.

(3) Select “1.ADFJUST” from the SERVICE MENU.

(4) Set < S030 > (Red drive), < S031 > (Green drive) and

< S032 > (Blue drive) to set “133”.

(5) Set < S001 > (adjustment setting mode change) to

set “013” and it change to the 1125i A-D offset adjustment setting mode.

(6) Set < S013 > (1125i blue offset) to minimize the blue

noise in the upper half of the screen. (See Fig.6)

(7) Set < S014 > (1125i red offset) to minimize the red

noise in the upper half of the screen. (See Fig.6)

(8) Readjust < S013 > and < S014 > to set the upper half

of the screen to be the blackest. (See Fig.6)

(9) Set < S001 > to set “000” and it change to the normal

mode.

(10)

Press the [MUTING] key to memorize the set value.

SUB-SCREEN A-D OFFSET

Minimize the red and blue noisese in the upper half of the the screen.

Remote control unit

Signal generator

Fig. 6

[1. ADJUST] S001:PREPARE (adjustment setting mode change)

S016:RT CB OF (Sub screen blue offset) S017:RT CR OF (Sub screen red offset)

S030:R DRIVE (Red drice) S031:G DRIVE (Green drive) S032:B DRIVE (Blue drive)

(1) Set VIDEO STATUS to “STANDARD”.

(2) Set MULTI-PICTURE to “TWIN-PICTURE”.

(3) Receive a NTSC 30% all-white pattern signal on the

right screen. At this time, make the left screen VIDEO1 mode (No signal).

(4) Select “1.ADFJUST” from the SERVICE MENU.

(5) Set < S030 > (Red drive), < S031 > (Green drive) and

< S032 > (Blue drive) to set “133”.

(6) Set < S001 > (adjustment setting mode change) to

set “017” and it change to the sub-screen A-D offset adjustment setting mode.

(7) Set < S016 > (Sub-screen blue offset) to minimize the

blue noise in the upper half of the screen. (See Fig.7)

NOTE:

• If you select an adjustment item < S016 >, then the

screen automatically turn to twin pictures mode.

(8) Set < S017 > (Sub-screen red offset) to minimize the

red noise in the upper half of the screen. (See Fig.7)

(9) Readjust < S016 > and < S017 > to set the upper half

of the screen to be the blackest. (See Fig.7)

(10)

Set < S001 > to set “000” and it change to the normal mode.

(11)

Press the [MUTING] key to memorize the set value.

VIDEO-1

Fig. 7

TV(RF)

<30% all-white>

(No.YA099) 1-29

Page 30

Item

Measuring

instrument

Test point Adjustment part Description

WHITE BALANCE (HIGH LIGHT)

MTS INPUT LEVEL

Remote control unit

Signal generator

Remote control unit

Signal generator

[1. ADJUST] S030:R DRIVE (Red drive) S031:G DRIVE (Green drive) S032:B DRIVE (Blue drive)

[1.ADJUST] T001:IN LEVEL (MTS input level)

(1) Receive a NTSC 75% all-white pattern signal.

(2) Set VIDEO STATUS to “STANDARD”.

(3) Set COLOR TEMPERATURE to “LOW”.

(4) Select “1.ADFJUST” from the SERVICE MENU.

(5) Keep one of < S030 > (Red drive), < S031 > (Green

drive) or < S032 > (Blue drive) unchanged, then lower the other two so that the all-white screen is equally white throughout.

NOTE:

• Set one or more of < S030 >, < S031 > and < S032 > to

set values “133”.

(6) Check that white balance is properly tracked from low

light to high light. If the white balance tracking is deviated, adjust to correct it.

(7) Press the [MUTING] key to memorize the set value.

(1) Receive a NTSC colour bar signal (400 Hz).

(2) Set AUDIO OUT to “FIX”.

(3) Set SMART SOUND to “OFF”. [PD-42V485/S]

(4) Select “1.ADJUST” from the SERVICE MENU.

(5) Verify that the <T001> (MTS input level) is set at its

initial setting value.

(6) Press the [MUTING] key to memorize the set value.

MTS SEPARATION

L-Channel signal waveform

1 cycle

1-30 (No.YA099)

Remote control unit

TV audio multiplex signal generator

Oscilloscope

AUDIO L OUT AUDIO R OUT

R-Channel crosstalk portion

Minimum

Fig. 8

[1.ADJUST] T002:LOW SEP (MTS low separation) T003:HIGH SEP (MTS high separation)

(1) Receive a stereo L signal (300Hz) from the TV audio

multiplex signal generator to the antenna terminal.

(2) Set MTS to “STEREO".

(3) Set AUDIO OUT to “FIX".

(4) Set SMART SOUND to “OFF". [PD-42V485/S]

(5) Connect the oscilloscope to AUDIO L OUT, and display

one cycle portion of the 300Hz signal.

(6) Change the connection of the oscilloscope to AUDIO

R OUT, and enlarge the voltage axis.

(7) Select “1.ADJUST" from the SERVICE MENU.

(8) Set < T002 > (MTS low separation) so that the stroke

element of the 300Hz signal will become minimum.

(9) Receive a stereo R signal (3kHz) from the TV audio

multiplex signal generator to the antenna terminal.

(10)

Set < T003 > (MTS high separation) so that the stroke element of the 3kHz signal will become minimum.

(11)

Press the [MUTING] key to memorize the set value.

Page 31

SECTION 5

SERVICE MENU SCREEN

< SELF-CHECK SCREEN (Page 1) >

< SELF-CHECK SCREEN (Page 2) >

TROUBLESHOOTING

5. 1 SELF-CHECK FEATURE

5.1.1 OUTLINE

This model has a “Self-check function”, which checks the operation state of the circuits and informs us of a failure by flashing POWER LED when a failure occurs. Diagnosis is performed when power is turned on, and information input to the main microcomputer is monitored at all time. Failure detection is based on input state of I various control lines connected to the main microcomputer.

5.1.2 HOW TO ENTER THE SELF-CHECK MODE

(1) Press the [SLEEP TIMER] key, and set it to 0 minutes. (2) Press the [DISPLAY] key and the [VIDEO STATUS] key

simultaneously, then the SERVICE MENU screen will be displayed. (See Fig.1)

(3) In the SERVICE MENU, press the [2] key. Then, the SELF-

CHECK screen will be displayed. (See Fig.2)

(4) Press the [SLEEP TIMER] key, then the second page of

the SELF-CHECK screen will be displayed.

NOTE:

• When the [RETURN +] key pressed, the first page

change screen.

5.1.3 HOW TO EXIT THE SELF-CHECK

(1) When you leave the failure history

Press the [MENU] key to exit the SELF-CHECK.

(2) When you not leave the failure history

In the SELF-CHECK, press the [POWER] key. Then the power is turned off.

5.1.4 FAILURE HISTORY

Failure history can be counted up to 9 times for each item.When the number exceeds 9, display will remain as 9. Failure history will be stored in the memory unless it has been deleted.

NOTE:

Only SYNC (with/without sync signals) will be neither counted nor stored.

5.1.5 POINTS TO NOTE WHEN USING THE SELF-CHECK FEATURE

In addition to circuit failures (abnormal operation), the following cases may also be iagnosed as “Abnormal” and displayed and counted as “NG”.

(1) Temporary defective transmissions across circuits due

to pulse interruptions.

(2) Misalignment in the on/off timing of power for I

when turning on/off the main power.

Diagnosis may be impeded if a large number of items are displayed as “NG”. As such, start self-check only after 5 seconds in the case of panels upon turning on the power. If recurrences are expected, ensure to clear (reset) the failure history and record the new self-check reults.

C bus and the

C bus (Vcc)

SERVICE MENU SCREEN

SERVICE MENU

1. ADJUST

2. SELF CHECK

3. I2C STOP

Fig. 1

< SELF-CHECK SCREEN (Page 1) >

LOB OK FAN OK SYNC M:OK S:OK HD:OK TIM OK MSM OK DIGI OK MEM OK AVSW OK YC OK AIO OK TUN OK GCR OK IP OK RGB NG 2 DVI OK HDMI OK

Item Item

CHECK Normality : OK Abnormality : NG

* As “SYNC” is not counted, the number of failures not displayed.

< SELF-CHECK SCREEN (Page 2) >

FAN OK ALM OK TMP OK ATP OK ASH OK

PNL OK MEM OK TMP OK AIO OK

Fig. 2

(No.YA099) 1-31

Page 32

5.1.6 DETAILS

Self- check is performed for the following items.

PAGE 1 OF SCREEN

Detection item

Low bias line short protection

Item

name

LOB

Detection content

Confirm the operation of the low bais (2.5V / 3.3V / 5V / 9V) protection circuit. Q9822 [REGULATOR PWB]

Fan lock

FAN

Not used.

Detection

signal (line)

LB_PRO

---

Detection timing

Detection starts 3 seconds after the power is turned on. If error continues between 400ms, the power is turned off. Not used.

Presence of sync signal

AC power input

Main CPU communication

Digital tuner

Main memory

AV select

3 dimensions YC separation Multi sound process RF tuner

Ghost reduction

SYNC

TIM

MSM

DIGI

MEM

AVSW

AIO

TUN

GCR

Confirmation of presence of video sync signal. M : Main sync signal S : Sub sync signal HD : Component sync signal IC201 [ANALOG SIGNAL PWB] Not used.

Confirmation of ACK (response) signal which uses sync communications with chassis CPU. IC7601 [DIGITAL SIGNAL PWB] Not used.

Confirmation of reply of ACK signal which uses I

C communication. IC7602 [DIGITAL SIGNAL PWB] Same as above. IC301, IC501 [ANALOG SIGNAL PWB] Same as above. IC1001 [DIGITAL SIGNAL PWB] Same as above. IC3101 [RECEIVER PWB] Same as above. TU3001 [RECEIVER PWB] Not used.

SDA

---

WAKE

---

SDA

---

Confirmation of presence of sync signal in video signal.

Not used.

If it checks whenever sync communication with SHM performed , and no reply of ACK signal, an error will be counted.

Not used.

If it checks whenever I

C communication is performed, and no reply of ACK signal, an error will be counted. Same as above.

Same as above.

Not used.

DIST process

RGB process

DVI (Digital communication) Digital input

1-32 (No.YA099)

RGB

DVI

HDMI

Confirmation of reply of ACK signal which uses I

C communication. IC3001 [DIGITAL SIGNAL PWB] Same as above. IC4001 [DIGITAL SIGNAL PWB] Not used.

Confirmation of reply of ACK signal which uses I

C communication. [DIGITAL SIGNAL PWB]

SDA

---

SDA

If it checks whenever I

C communication is performed, and no reply of ACK signal, an error will be counted. Same as above.

Not used.

If it checks whenever I2C communication is performed, and no reply of ACK signal, an error will be counted.

Page 33

PAGE 2 OF SCREEN

Detection item

Fan lock

Item

name

FAN

Not used.

Detection content

Detection

signal (line)

---

Detection timing

Not used.

Abnormal of operation of PDP (PANEL)

Abnormal rise of temperature in PDP (PANEL)

Abnormal rise of temperature in AUDIO PWB Short circuit detection of AUDIO PWB Panel communication

Panel memory

Temp. sensor operation Audio control

ALM

TMP

ATP

ASH

PNL

MEM

TMP

AIO

Confirm the operation of the panel protection. [PDP UNIT]

It detects whether the temperature in a display unit is normal. IC8101 [TEMP. SENSOR PWB]

Not used

Not used.

It confirm whether panel communication is normal. [PDP UNIT] Confirmation of reply of ACK signal which uses I

C communication. IC805 [INTERFACE PWB] Same as above. IC8101 [TEMP. SENSOR PWB] Same as above. IC6521 [AUDIO PWB]

SDA

---

SDA

Detection starts 8 seconds after the power is turned on. Detection is performed every 16ms. If errors continues between 300ms, the power is turned off. Detection starts 8 seconds after the power is turned on. Detection is performed every 0.5 seconds. If a temperature rises beyond the temperature

C for detection of error over the

of 71 predetermined 120 times, the power is turned off. Not used.

Not used.

If it checks whenever I

C communication is performed, and no reply of ACK signal, an error will be counted. If it checks whenever I

C communication is performed, and no reply of ACK signal, an error will be counted. Same as above.

Same as above.

5.1.7 METHOD OF DISPLAY WHEN A RASTER IS NOT OUTPUT

In the state where a raster is not output by breakdown of the set, an error is displayed by blink of the POWER LED.

Type of error

Item name

POWER LED flash cycle

Low bias line short LOB Low luminance green Flash 1.0 second / Low luminance green Out 1.0 seconds

Abnormal of operation of PDP (PANEL) ALM High luminance green Flash 1.0 second / High luminance green Out 1.0 seconds

Abnormal rise of temperature in PDP (PANEL) TMP High luminance green Flash 2.0 second / High luminance green Out 2.0 seconds

Abnormal rise of temperature in AUDIO PWB ATP High luminance green Flash 0.1 second / Low luminance green Out 0.1 seconds

EXPLANATION OF OPERATION

If error is detected, the power is turned off. Shortly after a power is turned off, POWER LED will be blinked. Power cannot be turned on until the power cord takes out and inserts, after a power is turned off.

(No.YA099) 1-33

Page 34

Victor Company of Japan, Limited

AV & MULTIMEDIA COMPANY VIDEO DISPLAY CATEGORY 12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, 221-8528, Japan

(No. YA099)

Printed in Japan

WPC

JVC PD-42V475/S, PD-42V485/S Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

PDP COLOR TELEVISION

TABLE OF CONTENTS

SPECIFICATION

1. 1 SAFETY PRECAUTIONS

1.2 INSTALLATION

1. 3 PRECAUTIONS REGARDING PDP

2.1 FEATURES

2. 2 MAIN DIFFERENCE LIST

2. 3 TECHNICAL INFORMATION

3.1 SYSTEM SETTEING

3.2 DISASSEMBLY PROCEDURE

3.3 REPLACEMENT OF MEMORY IC

3.4 REPLACEMENT OF CHIP COMPONENT

4.1 ADJUSTMENT PREPARATION

4. 2 PRESETTING BEFORE ADJUSTMENT

4.4 BASIC OPERATION OF THE SERVICE MENU

4.3 MEASURING INSTRUMENT AND FIXTURES

4.5 INITIAL SETTING VALUES IN THE SERVICE MENU SETTING MODE

4.6 ADJUSTMENT PROCEDURE

5. 1 SELF-CHECK FEATURE