JVC GM-V42UG Service Manual

SERVICE MANUAL

PLASMA DISPLAY MONITOR

5214920038

GM-V42PCE, GM-V42PCEB,

GM-V42PCEG, GM-V42S,

GM-V42UB, GM-V42UG

BASIC CHASSIS

RM-C579 REMOTE CONTROL UNIT

POWER

OFF

ASPECT

DISPLAY

INPUT SELECT

COMPO.

/(RGB B)

VIDEO

RGB AB

MUTING

VOLUME

MENU/EXIT

MENU INPUT POWER

TABLE OF CONTENTS

1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

2 SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-59

No.52149

2003/8

SPECIFICATION

Items

Type Plasma display Dimension (W × H × D) 103.5cm × 64.0cm × 8.9cm Mass 35.1kg Video System VIDEO A/B NTSC3.58, NTSC4.43, PAL, PAL60, SECAM

COMPONENT 480i, 576i, 480p, 576p, 760/60p, 1080/50i, 1080/60i(1035/60i) Power Requirements AC220V ~ AC240V, 50Hz / 60Hz Rated Input Current 1.4A Operation Environment Temperature : 0°C ~ 40°C

Storage Environment Temperature : -20°C ~ 60°C

Plasma Display Panel

Effective Screen Dimensions

Pixel Number

Pixel Pitch

Cell Pitch

Display Colours

Aspect Ratio Speaker 4cm × 7cm oval type, Impeadance 8Ω Audio power output Speaker output : 3W + 3W (TYP at impedance 6Ω) Input / Output

Terminals

Accessories Remote control unit × 1(RM-C579), AA/R6-size dry cell battery × 2(for operation check)

RGB A (INPUT)

AUDIO OUT Output impedance 600Ω, RCA pin jack × 2

SPEAKER OUT Impedance 6Ω ~ 8Ω (L/R)

REMOTE RS-232C D-sub 9-pin connector × 1

OPTION DC power supply for cooling fan (DC15V), DC jack × 1

GM-V42PCE, GM-V42PCEB (Silver) GM-V42PCEG (Gray)

Relative humidity : 20% ~ 80% (non-condensing) Pressure : 700hPa ~ 1114hPa

Relative humidity : 10% ~ 85% (non-condensing) Pressure : 300hPa ~ 1114hPa

Diagonal : 107.4cm, (W) 93.3cm × (H) 53.3cm Horizontal 852 × Vertical 480 (W-VGA) Horizontal 1.095mm × Vertical 1.110mm Horizontal 0.365mm × Vertical 1.110mm 16,777,216 colours (256 colours for each of RGB) 16:9 (Wide format)

D-sub 3-row 15-pin connector × 1

RGB

R / G / B : 0.7V(p-p) / 75Ω

G on sync : 1V(p-p) / 75Ω (negative syncy) HD [ Horizontal sync ] Cs [ Composite sync ]

VD [ Vertical sync ]

Audio 500mV(rms) / high impedance, 3.5mm stereo mini jack × 1

MAKE Mini-DIN 4pin connector × 1 WIRED 3.5mm stereo mini jack connector × 1

Remote control cable × 1, Power cord (approx 2.5m) × 3

0.3V(p-p) ~ 5V(p-p) / 470Ω (positive / negative polarity)

1V(p-p) ~ 5V(p-p) / 470Ω (positive / negative polarity)

Contents

Design and specifications are subject to change without notice.

1-2 (No.52149)

Items

Type Plasma display Dimension (W × H × D) 103.5cm × 64.0cm × 8.9cm (40-3/4" × 25-1/4" × 3-5/8") Mass 35.1kg (77.4 lbs) Video System VIDEO A/B NTSC3.58, NTSC4.43, PAL, PAL60, SECAM NTSC3.58

COMPONENT 480i, 576i, 480p, 576p, 720/60p, 1080/50i, 1080/60i (1035/60i) Power Requirements AC220V ~ AC240V, 50Hz / 60Hz AC120V, 60Hz Rated Input Current 1. 4A 2.4A Operation Environment Temperature : 0°C ~ 40°C

Storage Environment Temperature : -20°C ~ +60°C

Plasma Display Panel

Effective Screen Dimensions

Speaker 4cm × 7cm oval type, Impeadance 8Ω Audio power output Speaker output : 3W+3W (TYP at impedance 6Ω) Input / Output

Terminals

Accessories Remote control unit (RM-C579) × 1, AA/R6-size dry cell battery × 2(for operation check)

Design and specifications are subject to change without notice.

Pixel Number

Pixel Pitch

Cell Pitch

Display Colours

Aspect Ratio

VIDEO A

(IN / OUT)

VIDEO B

(INPUT)

RGB A (INPUT)

COMPONENT/

RGB B (INPUT)

AUDIO OUT Output impedance 600Ω, RCA pin jack × 2

SPEAKER OUT Impedance 6Ω ~ 8Ω (L/R)

REMOTE RS-232C D-sub 9-pin connector × 1

OPTION DC Power supply for cooling fan (DC15V), DC jack × 1

Relative humidity : 20% ~ 80% (non-condensing) Pressure : 700hPa ~ 1114hPa

Relative humidity : 10% ~ 85%(non-condensing) Pressure : 300hPa ~ 1114hPa

Diagonal : 107.4cm, (W) 93.3cm × (H) 53.3cm [Diagonal : 42-3/8", (W) 36-3/4" × (H) 21"] Horizontal 852 × Vertical 480 (W-VGA) Horizontal 1.095mm × Vertical 1.110mm Horizontal 0.365mm × Vertical 1.110mm 16,777,216 colours (256 colours for each of RGB) 16:9 (Wide format)

Video input 1V(p-p) / 75Ω, BNC connector × 1 Video output 1V(p-p) / 75Ω, BNC connector × 1 Audio input 500mV(rms) / high impedance, RCA pin jack connector × 2(L/R) Y/C Mini-DIN 4pin connector × 1

Video 1V(p-p) / 75Ω, RCA pin jack × 1 Audio 500mV(rms) / high impedance, RCA pin jack × 1

[ Horizontal sync (HD) ] [ Composite sync (Cs) ]

[ Vertical sync (VD) ] Audio 500mV(rms) / high impedance, 3.5mm stereo mini jack × 1 COMPONENT BNC connector × 3

RGB

HD [ Horizontal sync ] Cs [ Composite sync ]

Audio 500mV(rms) / high impedance, RCA pin jack × 2

MAKE Mini-DIN 4pin connector × 1 WIRED 3.5mm stereo mini jack connector × 1

Remote control cable × 1, Power cord (approx 2.5m) × 3

GM-V42S (Silver) GM-V42UB (Silver), GM-V42UG (Gray)

Y : 1V(p-p) / 75Ω C : 0.286V(p-p) / 75Ω [NTSC]

0.3V(p-p) 75Ω [PAL/SECAM]

D-sub 3-row 15-pin connector × 1 R / G / B : 0.7V(p-p) / 75Ω

RGB

G on sync : 1V(p-p) / 75Ω (negative syncy) HD : 0.3V(p-p) ~ 5V(p-p) / 470Ω (positive / negative polarity) Cs : 0.3V(p-p) ~ 5V(p-p) / 470Ω (positive / negative polarity) VD : 1V(p-p) ~ 5V(p-p) / 470Ω (positive / negative polarity)

Y : 1V(p-p) / 75Ω Pb/B-Y : 0.7V(p-p) / 75Ω Pr/R-Y : 0.7V(p-p) / 75Ω

BNC connector × 5

[Analog RGB]

VD [ Vertical sync ]

R : 0.7V(p-p) / 75Ω G : 0.7V (p-p) / 75Ω G on sync : 1V(p-p) / 75Ω (negative sync) B : 0.7V (p-p) / 75Ω

0.3V(p-p) ~ 5V(p-p) / 1kΩ (positive / negative polarity) / 75Ω

0.3V(p-p) ~ 5V(p-p) / 1kΩ (positive / negative polarity) / 75Ω 1 V(p-p) ~ 5V(p-p) / 1kΩ (positive / negative polarity) / 75Ω

Contents

(No.52149)1-3

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 sh ading on the schematics and by ( ) on the parts list in Service manual. The use of a substitute repl acement which does

not have the same safety characteristics as the recommended replacement part shown in the parts list of Service manual may cause shock, fire, or other hazards.

(4) Don't short between the LIVE side ground and

ISOLATED (NEUTRAL) side ground or EARTH side ground when repairing.

Some model's power circuit is partly different in the GND. The difference of the GND is shown by the LIVE : ( ) side GND, the ISOLATED (NEUTRAL) : ( ) side GND and EARTH : ( ) side GND. Don't short between the LIVE side GND and ISOLATED (NEUTRAL) side GND or EARTH side GND and never measure the LIVE side GND and ISOLATED (NEUTRAL) side GND or EARTH side GND at the same time with a measuring apparatus (oscilloscope etc.). If above note will not be kept, a fuse or any parts will be broken.

(5) If any repair has been made to the chassis, it is

recommended that the PDP voltage setting should be checked or adjusted.

(6) 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.

(7) Isolation Check (Safety for Electrical Shock Hazard)

After re-assembling the product, always perform an isolation check on the exposed metal parts of the cabinet (antenna terminals, video/audio input and output terminals, Control knobs, metal cabinet, screw heads, earphone jack, control shafts, etc.) to be sure the product is safe to operate without danger of electrical shock.

a) Dielectric Strength Test

The isolation between the AC primary circuit and all metal parts exposed to the user, particularly any exposed metal part having a return path to the chassis should withstand a voltage of 3000V AC (r.m.s.) for a period of one second. (. . . . Withstand a voltage of 1100V AC (r.m.s.) to an appliance rated up to 120V, and 3000V AC (r.m.s.) to an appliance rated 200V or more, for a period of one second.) This method of test requires a test equipment not generally found in the service trade.

b) Leakage Current Check

Plug the AC line cord directly into the AC outlet (do not use a line isolation transformer during this check.). Using a "Leakage Current Tester", measure the leakage current from each exposed metal part of the cabinet, particularly any exposed metal part having a return path to the chassis, to a known good earth ground (water pipe, etc.). Any leakage current must not exceed 0.5mA AC (r.m.s.). However, in tropical area, this must not exceed 0.2mA AC (r.m.s.).

Alternate Check Method

Plug the AC line cord directly into the AC outlet (do not use a line isolation transformer during this check.). Use an AC voltmeter having 1000Ω 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 1000 /V, OR MORE SENSITIVITY)

1-4 (No.52149)

0.15 F AC-TYPE

GOOD EARTH GROUND

1500 10W

PLACE THIS PROBE ON EACH EXPOSED METAL PART

1.2 INSTALLATION

1.2.1 REQUIREMENTS FOR SETTING

The following minimum space must be kept when a PDP is installed. (The recommended distance should be from the most projected portion when a PDP is inclined.) An insufficient space reduces cooling efficiency and raises the internal temperature. If the internal temperature rises over the reference value, the temperature sensor works to turn the power off for protecting the main body. Therefore, vents on the backside of the main body such as heat dissipation vents must not be blocked, and sufficient spaces for heat dissipation must be kept around the main body.

Methods of Installation

Hanging from a wall [Horizontal]

Hanging from a wall [Vertical]

10cm

Front

Wall

20cm

15cm

10cm10cm

10cm

Flank Remarks

Front Wall

5cm

Wall

5cm

It is necessary to set the cooling fan where install each side causes high temperature within a PDP and may damage the inner circuit.

Do not prevent the radiation of heat from back, top and flank sides of a PDP. Preventing the radiation of heat from each side causes high temperature within a PDP and may damage the inner circuit.

Install a PDP in a place where is well ventilated. Ambient temperature should be within a range of 0 ~40 .

An exclusive fixture (option) should be used.

Suspension from a ceiling

Desktop

10cm

Wall

15cm

10cm10cm

15cm

10cm10cm

Front

The structure and strength of the wall where a PDP is installed should be checked beforehand so as to install the PDP safety without any accident.

Wall

5cm

A PDP should be installed on a rigid floor or stand.

In order to prevent a PDP from turning over by an accident or earthquake, safety measures should be considered.

Wall

5cm

(No.52149)1-5

1.2.2 PRECAUTION DURING NOTES FOR TRANSPORTATION

When transporting the display unit, pressure exerted on the internal PDP (Plasma Display Panel) due to improper handing (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 exchanging the handing 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 lay a PDP on its side.

A PDP should always be placed upright during both transportation and safekeeping. Don't lay it on its side. The panel of a PDP is very fragile to the impact in the horizontal direction. When a car carries a PDP, load it on board the car in parallel with the moving direction of the car. Don't lay several PDPs one on top another. During safekeeping, don't lay more than two PDPs one on top another even if they are kept upright.

1.2.4 RETAINED-IMAGE / BURN-IN ON SCREEN

Like CRTs, "burn-ins" 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 inverting 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 medi um tone colors. Burn-in dose 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 then the other parts. This is not a defect but is because due to the discharge surfa ce of the lighted portion has become being relatively activated and its luminance higher than the unlighted parts.

1.2.5 BRIGHTNESS CHANGE IN THE SCREEN

In order to save the power consumption, the power is controlled (with APS function) depending on the brightness of the screen. For this, the brightness may change after a short time when the picture of the screen is changed. However, this phenomenon is not a trouble.

1.2.3 PRECAUTIONS ON INSTALLATION To get good heat dissipation from the rear.

This Monitor is not equipped with cooling fans because it is designed to operate quietly. If you install the Monitor in such a way as not instructed, additional methods are required to cool down the Monitor.

A : Horizontal Installation (Normal)

In the case, the slots and openings in the cabinet protect the Monitor from overheating. * See also "Requirements forsetting"

on page 6 in the instruction.

B : Vertical Installation

It is required to attach the Cooling Fan Unit (TS-C01FANG : option). * Refer to the following figure for how to attach the cooling fan unit.

An option terminal is exclusively for a cooling fan. Please do not use it for connection with other apparatus.

Cooling Fan Unit (Option)

POWERAC INAUDIO

OUT

MAKE

WIRED

RS-232C

REMOTE

SPEAKER OUT

AUDIO

RGB A

OPTION

1.2.6 INFRARED RAYS

Because the near infrared rays (800nm~1000nm) radiate from the panel face, the neighboring infrared ray remote controllers, infrared communication systems, etc. may malfunction. In these cases, take a measure to prevent the trouble to be caused by direct rays (or reflected rays) from the screen by changing the direction of the screen face or keeping a safe distance between a PDP and other devices.

1.2.7 OPTICAL FILTER (FRONT 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 a flannel). Do not use solvents such as benzene or thinner to wipe the filter surface. This may cause the filter to deteriorate in quality or the coating on the surface to come off. As the filter surface is fragile. Do not scratch or hit it with hard materials.

1.2.8 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 met, etc. underneath to avoid causing scratched 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.

1-6 (No.52149)

SPECIFIC SERVICE INSTRUCTIONS

2.1 TIMING SPECIFICATION & SCAN SIZE

Divide Item

COMPOSITE

Y/C

COMPONENT

PC/RGB 15k

PC/VGA 400

PC/VGA 480

PC/SVGA

PC/XGA

NTSC, PAL60,

NTSC4.43

(B/W 60Hz)

PAL, SECAM

(B/W 50Hz)

480i

576i

480p SMPTE 293M 59.94 31.468 27.00 858 525 720 483

576p SMPTE 293M 50.00 31.250 27.00 864 625 720 575

720p SMPTE 296M 60.00 45.000 74.25 1 650 750 1 280 720 FULL 95.00 95.00 1080/50i SMPTE 274M 50.00 28.125 74.25 2640 562.5 192 0 540 FULL 95.00 95.00 1080/60i SMPTE 274M 60.00 33.750 74.25 2200 562.5 192 0 540 FULL 95.00 95.00

1035i BTA S-001A 60.00 33.750 74.25 2200 562.5 1920 517.5 FULL 92.75 92.75

RGB 15k/60Hz 59.94 15.734 14.32 910 525 768 485

RGB 15k/50Hz 50.00 15.625 17.73 1135 625 922 575

PC98 (NEC) 56.42 24.82 21.05 848 440 640 400

VGA400/70 (IBM) 70.09 31.47 25.18 800 449 640 400

VGA-60 (Industry std.) 59.94 31.47 25.17 800 525 640 480 VGA-72 VESA std. 72.81 37.86 31.50 832 520 640 480 VGA-75 VESA std. 75.00 37.50 31.50 840 500 640 480

MAC 13" (Apple) 66.67 35.00 30.24 864 525 640 480 SVGA-56 SVGA-60

SVGA-72 SVGA-75

XGA-60 XGA-70 VESA STD. 70.07 56.48 75.00 1328 806 1024 768 XGA-75 VESA STD. 75.03 60.02 78.75 1312 800 1024 768

XGA-85 VESA STD. 85.00 68.68 94.50 1376 808 1024 768

XGA+-75 VESA STD. 75.00 67.50 108.0 1600 900 1152 864

Standard

SMPTE 244M 59.94 15. 734 14.32 910 525 768 485

ITU-R BT601-4

(CCIR Rec.601)

ITU-R BT601-4

(CCIR Rec.601)

VESA GUIDELINES VESA GUIDELINES

VESA GUIDELINES

SECTION 2

Input picture format Scan size

Frequency Total pixel Visible area pixel

Vert. Hor.

fVi fHi fci Hi Vi Hai Vai Kh Kv Hz kHz MHz

50.00 15.625 17.73 1135 625 922 575

59.94 15.734 13.50 858 525 720 485

50.00 15.625 13.50 864 625 720 575

56.25 35.16 36.00 1024 625 800 600

60.32 37.88 40.00 1056 628 800 600

72.19 48.08 50.00 1040 666 800 600

75.00 46.88 49.50 1056 625 800 600

60.00 48.36 65.00 1 344 806 1024 768

Dot clock

Hor.Vert.Hor.Vert.

pixel/line line/frame pixel/line line/frame

Display mode

REGULAR 95.00 95.00

FULL 95.00 95.00

PANORAMIC 95.00 90.00

ZOOM 95.00 71.25

REGULAR 95.00 95.00

FULL 95.00 95.00

PANORAMIC 95.00 90.00

ZOOM 95.00 71.25

REGULAR 95.00 95.00

FULL 95.00 95.00

PANORAMIC 95.00 90.00

ZOOM 95.00 71.25

REGULAR 95.00 95.00

FULL 95.00 95.00

PANORAMIC 95.00 90.00

ZOOM 95.00 71.25

REGULAR 95.00 95.00

FULL 95.00 95.00

PANORAMIC 95.00 90.00

ZOOM 95.00 71.25

REGULAR 95.00 95.00

FULL 95.00 95.00

PANORAMIC 95.00 90.00

ZOOM 95.00 71.25

REGULAR 95.00 95.00

FULL 95.00 95.00

PANORAMIC 95.00 90.00

ZOOM 95.00 71.25

REGULAR 95.00 95.00

FULL 95.00 95.00

PANORAMIC 95.00 90.00

ZOOM 95.00 71.25

REGULAR 100.00 100.00

FULL 100.00 100.00

REGULAR 100.00 100.00

FULL 100.00 100.00

REGULAR 100.00 100.00

FULL 100.00 100.00

REGULAR 100.00 100.00

FULL 100.00 100.00

REGULAR 100.00 100.00

FULL 100.00 100.00

REGULAR 100.00 100.00

FULL 100.00 100.00

REGULAR 100.00 100.00

FULL 100.00 100.00

REGULAR 100.00 100.00

FULL 100.00 100.00

REGULAR 100.00 100.00

FULL 100.00 100.00

REGULAR 100.00 100.00

FULL 100.00 100.00

REGULAR 100.00 100.00

FULL 100.00 100.00

REGULAR 100.00 100.00

FULL 100.00 100.00

REGULAR 100.00 100.00

FULL 100.00 100.00

REGULAR 100.00 100.00

FULL 100.00 100.00

REGULAR 100.00 100.00

FULL 100.00 100.00

Hor. Vert.

(No.52149)1-7

2.2 MAIN DIFFERENCE LIST Item GM-V42PCE GM-V42PCEB GM-V42PCEG GM-V42S GM-V42UB GM-V42UG

Colour Silver Silver Gray Silver Silver Gray Radiation Class A Class B Class A Class A Class B Class A Input Terminal VIDEO A Not available Not available Not available Available Available Available

VIDEO B Not available No t avai lable Not available Available Available Available COMPONENT

/ RGB B

Not available Not available Not available Availab le Available Available

Note :

• GM-V42PCE, GM-V42PCEG and GM-V42PCEB do not have the following input terminal-VIDEO A, VIDEO B and COMPONENT / RGB B.

• You need to install the video input unit (IF-C42P1C), which is separately purchased, to select VIDEO A, VIDEO B and COMPONENT(or RGB) as the input.

• To use the COMPONENT/RGB B terminals either as COMPONENT input terminal or as the RGB input terminal, you need to set RGB/COMPO. correctly. (Refer to the INSTRUCTIONS)

2.3 TECHNICAL INFORMATION

2.3.1 PDP (PLASMA DISPLAY PANEL) DESCRIPTION

2.3.1.1 CAUTION

Although a PDP is made with highly advanced precision, this does not necessarily mean all of the cells operate correctly. The PDP inevitably includes cell that do not light or light constantly. If the specifications (PDP performance) are unclear at the time of shipment, an adequate description cannot be conveyed to the customer. In event of inquiries from customers regarding PDP performance, check the following specifications in order to offer a suitable reply.

2.3.1.2 CELL ARRANGEMENT

The PDP is constructed of front and rear glass substrates provided with respe ctive discharge electrod es. Between these, neon for discharging and xenon for generating ultraviolet rays are enclosed. One picture element (pixel) is composed of Red, Green and Blue (RGB) cells. The cell pitch is 0.365mm horizontal (1.095mm per pixel) by 1.110mm vertical. As shown in Fig. 1, the cells are arranged for each R / G / B colour. A pixel consists of each cell of R/G/B/ colour. The size of a cell is

0.365mm horizontally and 1.110mm vertically.

Direction

Vertical(V)

Horizontal(H)

1st pixel

line

2nd pixel

line

479th pixel

line

480th pixel

line

1st pixel

array

B G R B G R

G RBG R

GRBGR

2nd pixel

array

RBG R

851th pixel

array

B GRBG R

BGRBGR

G RBG R

GRBGR

852th pixel

array

V 1.110mm Pitch of pixel (Pitch of cell)

1-8 (No.52149)

H 1.095mm

Pitch of pixel

One pixel

(1dot)

B cell G cell R cell

Fig.1 PIXEL (CELL) ARRANGEMENT

H 0.365mm Pitch of cell

2.3.1.3 PIXEL FAULT

There are three pixel faults - bright fault , dark fault and flicker fault - that are respectively defined as follows.

(1) BRIGHT FAULT

In this pixel fault, a cell that should not light originally is lighting on and off. For checking this pixel fault, input ALL BLACK SCREEN and find out the cell that is lighting on and off.

(2) DARK FAULT

In this pixel fault, a cell that should light originally is not lighting or lighting with the brightness twice as brighter as originally lighting. For checking this pixel fault, input 100% of each R/G/B colour and find out the cell that is not lighting.

(3) FLICKER FAULT

In the pixel fault, a cell that should light originally or not light originally is flashing on and off. For checking this pixel fault, input ALL BLACK SCREEN signal or 100% of each RGB colour and find out the cell that is flashing on and off.

2.3.1.4 PIXEL FAULT SPECIFICATION Fault Screen display Criteria for number of fau lted cell

BRIGHT FAULT All black screen A zone: 0

B zone: 1 or less than 1 in each colour

DARK FAULT Red level 100% on entire screen A zone: 2 or less than 2 in each colour

Green level 100% on entire screen

B zone: 6 or less than 6 in each colour

Blue level 100% on entire screen

FLICKER FAULT Red level 100% on entire screen A zone: 0

Green level 100% on entire screen

B zone: 2 or less than 2 in each colour

Blue level 100% on entire screen

(1) OBJECT RANGE

A-zone : Center portion (area enclosed by 1/4 vertically from the top and bottom and 1/4 horizontally from the right and left sides.) B-zone : Other area

1/4H 1/4H

B zone

1/4V

A zone

1/4V1/4V

(2) JUDGEMENT STANARD

Regardless of A and B zones, the following cases are considered as defects.

• When the distance between the bright fault is less than 15mm.

• When the distance between the bright fault and the dark defect or between the flicker fault is less than 15mm.

• When the distance between the dark fault and the flicker is less than 30mm.

(No.52149)1-9

2.3.2 REMOTE THROUGH FUNCTION

The REMOTE THROUGH function is a function that is capable of controlling such equipment as a karaoke system conn ected to the REMOTE THROUGH terminal by receiving the IR (infrared ray) signal at the sensor of the remote controller unit of this model.

2.3.2.1 REMOTE THROUGH OUTPUT TERMINAL

The REMOTE THROUGH terminal and MAKE (mini DIN 4 pin) terminal at the back of the main body share the same terminal. Therefore, it is necessary to change the setup at the SERVICE MODE when the REMOTE THROUGH function is used. For the pin layout at the terminal, the 4 pin will become an output terminal and the 1-3 pins will be GNDs.

REMOTE THROUGH OUTPUT TERMINAL

Pin No.

Signal name

GND

OUTPUT

2.3.2.2 HOW TO CHANGE THE SETUP OF THE FUNCTION

(1) Enter the SERVICE MODE. (2) Select the < CPU BLOCK > with the [/] key. (3) Press the [] key of the remote control unit to display the < CPU BLOCK >. (4) Select the "CE: SYSTEM CONSTANT" with the [/] key. (5) Press the [] key of the remote control unit to display the setup screen for the "SYSTEM CONSTANT". (6) Display the "CE 05" with the [/] key. (7) Change the setup value to 001 from 000 with the [/] key. (8) Press the MENU key of the remote control unit to exit from the SERVICE MODE. (9) After turning the power off (or at the stand-by mode), turn the power on again.

(10) Then the REMOTE THROUGH function is available.

SERVICE MODE

VCO ADJUST WHITE BALANCE BLOCK CPU BLOCK SIZE/POSITION BLOCK H POSITION BLOCK PANEL BLOCK SIGNAL BLOCK DEVICE INITIAL VALUE

ENTER: SELECT: EXIT:

[1/2]

DIAGNOSIS BLOCK UPDATE CPU PROGRAM HOUR METER BLOCK ENHANCER BLOCK

ENTER: SELECT: EXIT:

[2/2]

1-10 (No.52149)

< CPU BLOCK >

CA:PANORAMA DATA CB:SIGNAL RANGE CC:SIZE/POSI. RANGE CD:FRQENCY DATA CE:SYSTEM CONSTANT CF:TEMP. SENSOR DATAs CG:APS CONTROL DATA CH:TEST MODE

ENTER: SELECT: EXIT:

<CPU BLOCK> screen

C(E05)

SYSTEM CONSTANT screen

000 001

2.3.3 HOUR METER FUNCTION

This model is equipped with an "HOUR METER" function tha t displays elapsed time on operating time of the set. Elapsed time can be checked at the "HOUR METER BLOCK" in the SERVICE MODE. Also you can reset elapsed time to zero if needed. Elapsed time count 1 hour. MAX elapsed time is 65535 hour.

 HOW TO RESET ELAPSED TIME

(1) Enter the SERVICE MODE (Fig.1). (2) Press [/] key, and select "HOUR METER BLOCK" of

SERVICE MODE 2 page (Fig.2).

(3) Press [] key, and display "HOUR METER BLOCK"

screen (Fig.3).

(4) While the "HOUR METER BLOCK" display press []

key and it will display "RESET HOUR METE" (Fig.4).

(5) Press [] key and reset the HOUR METER (Fig.5).

SERVICE MODE

VCO ADJUST WHITE BALANCE BLOCK CPU BLOCK SIZE/POSITION BLOCK H POSITION BLOCK PANEL BLOCK SIGNAL BLOCK DEVICE INITIAL VALUE

ENTER: SELECT: EXIT:

Fig.1

DIAGNOSIS BLOCK UPDATE CPU PROGRAM HOUR METER BLOCK ENHANCER BLOCK

ENTER: SELECT: EXIT:

Fig.2

[1/2]

[2/2]

HOUR METER BLOCK

< HOUR METER BLOCK >

RESET HOUR METER (X1h) : 12345

ENTER: EXIT:

Fig.3

< RESET HOUR METER >

Are you sure ?

"YES" then Key

ENTER: SELECT: EXIT:

"NO" then Key

Fig.4

< HOUR METER BLOCK >

RESET HOUR METER (X1h) : 00000

2.3.4 REMINDER TO CHANGE A BATTERY

This model with a timer function, is equipped with a batte ry for the timer. When the battery is running low, a message of "BATTERY LOW" is displayed on the [TIMER], [COLOR-REVERSE] and [REFRESH] setting screen of the < SET-UP MENU >. At the end of the battery-life, a message of "BATTERY EMPTY" is displayed same screen. Both cases, you should make a battery change. Battery is fixed on the battery board. Please exchange the whole substrate.

 BATTERY CHANGE PROCEDURE

(1) Remote the terminal board on the back of the main body.

(Refer to disassembly procedure) (2) Remove the connector D on the battery board. (3) Remove the screw A attaching the battery board. (4) Change the battery board to new one.

Note :

After changing the battery board, the same message before a battery change will be displayed when the power is turned on for the first time. Therefore, turn off the power once, then turn on the power again. The message will be disappeared and you can use the model with normal functi on s.

AV TERMINAL

CND CONNECTOR

BATTERY PWB

ENTER: EXIT:

Fig.5

 THE CAUTIONS ON BATTERY EXCHANGE

Risk of explosion if battery is replaced by incorrect type. Dispose of used batteries according to the instructions.

(No.52149)1-11

SECTION 3

DISASSEMBLY

3.1 DISASSEMBLY PROCEDURE

• Prior to assembly/disassembly procedure of the set, be sure to disconnect the power cord from the wall outlet.

• Perform the following procedures on a flat and strong place.

3.1.1 REMOVING THE AV TERMINAL (Fig.1)

(1) Disconnect the power cord from the wall outlet. (2) Remove the 2 screws [A]. (3) Remove the 2 screws [B]. (4) Lift the both ends of the AV TERMINAL slowly, and remove

the CN1001 PWB. Then, remove the AV TERMINAL.

3.1.2 REMOVING THE PC TERMINAL (Fig.1)

• Remove the AV TERMINAL. (1) Remove the 2 screws [C]. (2) Remove the 2 screws [D]. (3) Remove the 2 screws [E]. (4) Lift the both ends of the PC TERMINAL slowly, and remove

the CN1003 the MAIN PWB. Then, remove the PC TERMINAL.

3.1.3 REMOVING THE AV TERMINAL PWB (Fig.2)

[Only GM-V42S, GM-V42UB and GM-V42UG]

• Remove the AV TERMINAL. (1) Remove the 12 screws [F]. (2) Remove the AV TERMINAL PWB.

3.1.4 REMOVING THE PC TERMINAL PWB (Fig.2)

• Remove the AV TERMINAL.

• Remove the PC TERMINAL. (1) Remove the 4 screws [G]. (2) Remove the 4 screws [H] with a box wrench. (3) Remove the AV TERMINAL PWB.

/CN1002 connectors connected to the MAIN

/CN1004/CN1005 connectors connected to

Only Europe model

GM-V42PCE GM-V42PCEB GM-V42PCEG

AV TERMINAL

PC TERMINAL PWB

AV TERMINAL PWB

Fig.1

AV TERMINAL

CN1002

CN1001

PC TERMINAL

CN1005 CN1004 CN1003

3.1.5 REMOVING THE BATTERY PWB (Fig.3)

• Remove the AV TERMINAL. (1) Remove the CND (2) Remove the 1 screw [I]. (3) Pull the BATTERY PWB toward you, and remove it.

1-12 (No.52149)

connector.

CND CONNECTOR

BATTERY PWB

Fig.2

AV TERMINAL

Fig.3

3.1.6 REMOVING THE FRONT PANEL (Fig.4)

• Remove the optional parts such as cooling fan if they are attached to the rear side of the main body.

• Place the main body with its screen side looking upward. (1) Remove the 3 screws [J]. (2) Lift the underside of the FRONT PANEL slowly, and

remove the tapes fixing the top part of the FRONT PANEL.

(3) Remove the FRONT PANEL.

3.1.7 REMOVING THE LED PWB (Fig.5)

• Remove the FRONT PANEL. (1) Remove the 2 screws [K]. (2) Remove the CNX (3) Remove the LED PWB.

connector.

CNX

LED PWB

Fig.4

CONTROL PWB

CNT

FRONT PANEL

CONTROL

PANEL

3.1.8 REMOVING THE CONTROL PWB (Fig.6)

• Remove the FRONT PANEL. (1) Remove the 2 screws [L]. (2) Remove the 3 screws [M]. (3) Remove the CNT (4) Remove the CONTROL PWB.

connector.

Surface

Fig.5

N O

REAR PANEL

Fig.6

(No.52149)1-13

3.1.9 REMOVING THE REAR COVER (Fig.7)

• Remove the AV TERMINAL.

• Remove the PC TERMINAL. (1) Remove the 21 screws [N]. (2) Remove the 1 screw [O]. (3) Lift the REAR COVER slowly, and remove it.

3.1.10 REMOVING THE BACK FRAME (LEFT/RIGHT) (Fig.7)

• Remove the AV TERMINAL.

• Remove the PC TERMINAL.

• Remove the REAR COVER. (1) Remove the 4 screws [P]. (2) Remove the 4 screws [Q]. (3) Lift the BACK FRAME, and remove it. (4) Remove the BACK FRAME on the other side in the sa me

way.

3.1.11 REMOVING THE SPEAKER / SPEAKER BRACKET (Fig.8)

• Remove the AV TERMINAL.

• Remove the PC TERMINAL.

• Remove the REAR COVER. (1) Remove the speaker cord. (2) Remove the 2 screws [R]. (3) Remove the SPEAKER. (4) Remove the SPEAKER on the other side in the same way. (5) Remove the clamp fixing the filter from the SPEAKER

BRACKET. (6) Remove the 2 screws [S]. (7) Remove the SPEAKER BRACKET. (8) Remove the SPEAKER BRACKET on the other side in the

same way.

BACK FRAME

CNV CONNECTOR

TEMP. SENSOR PWB

Q P

Fig.7

SPEAKER

CLAMP

3.1.12 REMOVING THE TEMP. SENSOR PWB (Fig.8)

• Remove the AV TERMINAL.

• Remove the PC TERMINAL.

• Remove the REAR COVER. (1) Remove the CNV

connector on the TEMP. SENSOR PWB. (2) Remove the screw [T]. (3) Remove the TEMP. SENSOR PWB.

1-14 (No.52149)

SPEAKER BRACKET

Fig.8

3.1.13 REMOVING THE SPEAKER TERMINAL PWB (Fig.9)

• Remove the AV TERMINAL.

• Remove the PC TERMINAL.

• Remove the REAR COVER.

• Remove the BACK FRAME. (1) Remove the 3 screws [U], 2 screws [V], and 1 screw [W]. (2) Remove the SPEAKER TERMINAL BRACKET. (3) Lift the SPEAKER TERMINAL PWB, and remove the

CN6006

connector. (4) Remove the speaker cord connected to the SPEAKER. (5) Remove the speaker cord from each clamp. (6) Remove the SPEAKER TERMINAL PWB.

3.1.14 REMOVING THE AUDIO PWB (Fig.9)

• Remove the AV TERMINAL.

• Remove the PC TERMINAL.

• Remove the REAR COVER.

• Remove the BACK FRAME.

• Remove the SPEAKER TERMINAL BRACKET.

• Remove the SPEAKER TERMINAL PWB. (1) Remove the 1 screw [X]. (2) Remove the cords connected to the CNF

/CNA connectors

connected to the sound board from each clamp. (3) Remove the CNA (4) Disconnect the CN9004

connector on the MAIN PWB.

connector on the VIDEO SMPS

PWB. (5) Remove the AUDIO PWB.

VIDEO SMPS PWB

CN9004

CNF

CNA

CN6006

SPEAKER TERMINAL BRACKET

SPEAKER TERMINAL PWB

AUDIO PWB

CNA

MAIN PWB

Fig.9

(No.52149)1-15

3.1.15 REMOVING THE LINE FILTER PWB (Fig.10)

• Remove the AV TERMINAL.

• Remove the PC TERMINAL.

• Remove the REAR COVER.

• Remove the BACK FRAME. (1) Remove 1 screw [Y]. (2) Remove the noise filter from the clamp fixed to the SHIELD

COVER. (3) Remove the 4 screws [Z]. (4) Remove the SHIELD COVER. (5) Remove the CN8001

connector on the SMPS PWB. (6) Remove the 3 screws [a] fixing the LINE FILTER PWB. (7) Remove the LINE FILTER PWB.

3.1.16 REMOVING THE DIGITAL PWB (Fig.11)

• Remove the AV TERMINAL.

• Remove the PC TERMINAL.

• Remove the REAR COVER. (1) Lift the DIGITAL PWB SHIELD COVER, and remove it. (2) Remove the CNX

/CNV/CNQ/CND/CNT connectors. (3) Remove the 4 screws [b]. (4) Turn the DIGITAL PWB upside down, and remove the

CN2201

/CNJ/CNK connectors.

(5) Remove the DIGITAL PWB.

SHIELD COVER

CN8001

SMPS PWB

DIGITAL PWB

SHIELD COVER

CNJ

LINE FILTER PWB

NOISE FILTER

Fig.10

CNX

CNK

DIGITAL

PWB

CN201

CNQ

CND

CNT

CHASSIS BASE

Fig.11

1-16 (No.52149)

3.1.17 REMOVING THE MAIN PWB (Fig.12)

• Remove the AV TERMINAL.

• Remove the PC TERMINAL.

• Remove the REAR COVER.

• Remove the DIGITAL PWB SHIELD COVER.

• Remove the DIGITAL PWB. (1) Remove the CNA (2) Remove the 5 screws [c]. (3) Remove the MAIN PWB.

/CNE connectors.

MAIN PWB

CNE

CHASSIS

BASE

CNA

3.1.18 REMOVING THE CHASSIS BASE (Fig.13)

The CHASSIS BASE can be removed without removing the MAIN PWB, DIGITAL PWB, LINE FILTER PWB, AUDIO PWB, and BATTERY PWB from the CHASSIS BASE.

• Remove the AV TERMINAL.

• Remove the PC TERMINAL.

• Remove the REAR COVER.

• Remove the BACK FRAME (right).

• Remove the SPEAKER TERMINAL BRACKET.

• Remove the SPEAKER TERMINAL PWB. (1) Remove the CN9004

PWB. (2) Remove the cords from clamps. (3) Remove the CNX

DIGITAL PWB. (4) Remove the CNE (5) Remove the 4 screws [d], 2 screws [e], and 2 screws [f]. (6) Lift the CHASSIS BASE, and remove th e LA03 connector

on the LOGIC-MAIN PWB. (7) Remove the CHASSIS BASE.

3.1.19 REMOVING THE PDP (PANEL) UNIT (Fig.13)

• Remove the AV TERMINAL.

• Remove the PC TERMINAL.

• Remove the REAR COVER.

• Remove the BACK FRAME (right).

• Remove the SPEAKER TERMINAL BRACKET.

• Remove the SPEAKER TERMINAL PWB.

• Remove the CHASSIS BASE. (1) Holding BACK FRAME SPACER, Lift the PDP upright and

remove it.

NOTE:

• When you remove the PDP (PANEL) UNIT, be careful not to

give a shock to the PDP (PANEL) UNIT enough. Two or more people are required to remove the PDP (PANEL) UNIT.

• Do not touch the front side (glass) of the PDP with your

fingers.

/CN8001 connectors on the SMPS

/CNV/CNQ/CNT connectors on the

connector on the MAIN PWB.

CNQ

CNE

SMPS PWB

CN9004

BLACK FLAME SPACER

CNT

LA03

Fig.12

CHASSIS BASE

CNV

CNX

BLACK FLAME SPACER

CN8001

LOGIC-MAIN PWB

Fig.13

(No.52149)1-17

3.1.20 DISASSEMBLY PDP UNIT

3.1.20.1 REMOVING THE SMPS PWB

• Remove the REAR COVER. (1) Remove the CN8007

CN8009

(2) Remove the 8 screws [g]. (3) Remove the SMPS PWB.

3.1.20.2 REMOVING THE X-MAIN PWB

• Removing the REAR COVER. (1) Remove the CN4001

connectors on the X-MAIN PWB. (2) Remove the 8 screws [h]. (3) Remove the X-MAIN PWB.

3.1.20.3 REMOVING THE Y-BUF-U PWB

• Remove the REAR COVER. (1) Remove the CN5401

connectors on the Y-BUF-U PWB. (2) Remove the 5 screws [I]. (3) Lift the Y-BUF-U PWB slightly, and remove th e CN5404

CN5405 connectors on the Y-BUF-U PWB.

(4) Remove the Y-BUF-U PWB.

3.1.20.4 REMOVING THE Y-BUF-L PWB

• Remove the REAR COVER. (1) Remove the CN5501

connectors on the Y-BUF-L PWB. (2) Remove the 5 screws [j]. (3) Lift the Y-BUF-L PWB slightly, and remove the CN5504/

CN5505

(4) Remove the Y-BUF-L PWB.

3.1.20.5 REMOVING THE Y-MAIN PWB

• Remove the REAR COVER.

• Remove the CHASSIS BASE.

• Remove the Y-BUF-U PWB.

• Remove the Y-BUF-L PWB. (1) Remove the CN5001

PWB. (2) Remove the 7 screws [k]. (3) Remove the Y-MAIN PWB.

/CN8002 connectors on the SMPS PWB.

connectors on the Y-BUF-L PWB.

/CN8008/CN8004/BUFFER/CN8003/

/CN4002/CN4003/CN4004/CN4005

/CN5402/CN5403/CN5406

/CN5502/CN5503/CN5506

/CN5008 connectors on the Y-MAIN

3.1.20.6 REMOVING THE LOGIC-MAIN PWB

• Remove the REAR COVER.

• Remove the CHASSIS BASE. (1) Remove the CN101

connectors on the LOGIC-MAIN PWB. (2) Remove the 6 screws [l]. (3) Remove the LOGIC-MAIN PWB.

3.1.20.7 REMOVING THE E-BUF PWB

• Remove the REAR COVER.

• Remove the BACK FRAME.

• Remove the CHASSIS BASE.

• Remove the SPEAKER BRACKET (left). (1) Remove the EC1

connectors on the E-BUF PWB. (2) Remove the 6 screws [m]. (3) Remove the E-BUF PWB.

3.1.20.8 REMOVING THE F-BUF PWB

• Remove the REAR COVER.

• Remove the BACK FRAME.

• Remove the CHASSIS BASE. (1) Remove the FC4

BUF PWB. (2) Remove thr 4 screws [n]. (3) Remove the F-BUF PWB.

3.1.20.9 REMOVING THE G-BUF PWB

• Remove the REAR COVER.

• Remove the BACK FRAME.

• Remove the CHASSIS BASE.

• Remove the SPEAKER BRACKET (right). (1) Remove the GC5

the G-BUF PWB. (2) Remove the 6 screws [o]. (3) Remove the G-BUF PWB.

3.1.20.10 REMOVING THE VIDEO SMPS PWB

• Remove the REAR COVER. (1) Remove the CN9001

CN9007

(2) Remove the 4 screws [p]. (3) Remove the VIDEO SMPS PWB.

connectors on the VIDEO SMPS PWB.

/CN201/CN401/CN402/CN403/CN803

/EC2/EC3/CN401/CN806/EF1

/CN402/FE1/FG1 connectors on the F-

/GC6/GC7/CN403/GF1 connectors on

/CN9002/CN9004/CN9005/CN9006/

1-18 (No.52149)

CN5008

CN5404

CN5406

CN5405

CN5505

CN5506

CN5504

CN5001

CN5401

CN5402

CN5403

CN5501

CN5502

CN5503

CN9005

CN9006

CN9001

CN9007

CN9002

CN9004

CN8003

BUFFER

CN8004

CN8007

CN8008

CN8009 CN8002

CN201

CN803

CN101

CN401

CN402

CN403

CN4001 CN4003

CN4004

CN4002

CN4005

Y-BUF-U PWB

Y-BUF-L PWB

EC1

Y-MAIN PWB

EC2 EC3

CN806 CN401 CN402 CN403

EF1

FC4 FC4

FE1

GC5 GC6 GC7

GF1

SMPS PWBVIDEO SMPS PWB

X-MAIN PWB

l h

E-BUF PWB G-BUF PWBF-BUF PWB

LOGIC-MAIN PWB

Fig.14

(No.52149)1-19

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