Panasonic TH-50PHD30BX Manuel utilisateur

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Service Manual

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ORDER NO. ITD0111013C2

High Definition Plasma Display

●TH-50PHD30BX/TH-50PHD30EX/TH-50PHW30BX/TH-50PHW30EX

GPH3D Chassis

Specifications

Power Source: AC220 - 240V 50/60Hz

Power Consumption: 530 W

3.0W (stand-by condition)

1.4W (Power off condition)

Plasma Display panel: Drive method AC type

50-inch, 16:9 aspect ratio

Contrast Ratio 3000:1

Brightness Capability (Panel only) 500 cd/ m2

(As a set) 300 cd/ m2

Screen size: 1106 mm (W)×622 mm (H)×1269 mm (diagonal)

No. of pixels

1,049,088 (1366 (W)×768 (H)) [4,098×768 dots]

Operating condition:

Temperature 0°C - 40°C

Humidity 20% - 80%

Applicable signals:

Color System NTSC, PAL, PAL60, SECAM, Modified NTSC

Scanning format 525i (480i), 625i (576i), 525p (480p), 750p (720p), 1125/60i, 50i, 24p, 24SF (1080/60i, 50i, 24p, 24SF).......SMPTE274M

PC signals XGA display

VGA, SVGA

SXGA, UXGA (compressed)

Horizontal scanning frequency 15.5 - 110kHz

Vertical scanning frequency 48 - 120Hz

Connection terminals:

(HIGH-DENSITY D-SUB15PIN) R,G,B/0.7 Vp-p (75-ohm)

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HD, VD/1.0 - 5.0 Vp-p (high impedance)

AUDIO IN (M3.5 JACK) 0.5Vrms (high impedance)

SERIAL

EXTERNAL CONTROL TERMINAL (D-SUB9PIN) RS-232C COMPATIBLE

SPEAKERS (6Ω) 16W [8 W×8 W] (10% THD)

For TY-SP50PHD3W only

Dimensions (W×H×D): 1210 mm 724mm 8 mm

Weight (Mass) approx. 45.0 kg (main unit only)

approx. 49.6 kg (with speakers)

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1 Safety Precautions

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1.1 General Guidelines

1.2 Touch-Current Check

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1.1 General Guidelines

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1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which

have been overheated or damaged by the short circuit.

2. After servicing, see to it that all the protective devices such as insulation barriers, insulation

papers shields are properly installed.

3. After servicing, make the following leakage current checks to prevent the customer from being

exposed to shock hazards.

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1.2 Touch-Current Check

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1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.

2. Connect a measuring network for touch currents between each exposed metallic part on the set

and a good earth ground such as a water pipe, as shown in Figure 1.

3. Use Leakage Current Tester (Simpson 228 or equivalent) to measure the potential across the

measuring network.

4. Check each exposed metallic part, and measure the voltage at each point.

5. Reserve the AC plug in the AC outlet and repeat each of the above measure.

6. The potential at any point (TOUGH CURRENT) expressed as voltage U1 and U2, does not

exceed the following values:

For a. c.: U1 = 35 V (peak) and U2 = 0.35 V (peak);

For d. c.: U1 = 1.0 V,

Note:

The limit value of U2 = 0.35 V (peak) for a. c. and U1 = 1.0 V for d. c. correspond to the values

0.7 mA (peak) a. c. and 2.0 mA d. c.

The limit value U1 = 35 V (peak) for a. c. correspond to the value 70 mA (peak) a. c. for

frequencies greater than 100 kHz.

7. In case a measurement is out of the limits specified, there is a possibility of a shock hazard, and

the equipment should be repaired and rechecked before it is returned to the customer.

Figure 1. Measuring network for TOUCH CURRENTS

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2 Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive

(ES) Devices

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Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices.

Examples of typical ES devices are integrated circuits and some field-effect transistorsand semiconductor "chip" components. The following techniques should be

used to help reduce the incidence of component damage caused by electro static discharge (ESD).

1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your body by touching a known earth

ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap, whichshould be removed for potential shock reasons prior to

applying power to the unit under test.

2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as alminum foil, to prevent electrostatic

charge buildup or exposure of the assembly.

3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.

4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static (ESD protected)" can generate electrical charge

sufficient to damage ES devices.

5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.

6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacement ES devices are

packaged with leads electrically shorted together by conductive foam, alminum foil or comparableconductive material).

7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly

into which the device will be installed.

Caution

Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.

8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise hamless motion such as the brushing together of your clothes fabric

or the lifting of your foot from a carpeted floor can generate static electricity (ESD) sufficient todamage an ES device).

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3 PCB structure sheet of GPH3D chassis

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Board Part Number Remark

C1 TNPA1914 COMMON 1

C2 TNPA1915 COMMON 1

C3 TNPA1916 COMMON 1

C4 TNPA1917 COMMON 1

C5 TNPA1918 COMMON 1

C6 TNPA1919 COMMON 1

C7 TNPA1993 COMMON 1

C8 TNPA2277 COMMON 1

D TZTNP01KESE

F TXN/F10HAS COMMON 1

H3 TNPA1756AB COMMON 1

HX TZTNP02KESE COMMON 2

J TNPA2244N COMMON 2

P1 TXNP11KESE COMMON 1

P3 TNPA1907AC COMMON 1

P4 TNPA1908 COMMON 1

P5 TNPA1909AC COMMON 1

P6 TNPA1910AC COMMON 1

P7 TNPA1911AC COMMON 1

P8 TNPA1912AC COMMON 1

P9 TNPA1906AC COMMON 1

S1 TNPA1784 COMMON 1

SC TNPA1922 COMMON 1

SD TNPA1921 COMMON 1

SS TNPA1923 COMMON 1

SS2 TNPA1924 COMMON 1

SS3 TNPA1925 COMMON 1

SU TNPA1920 COMMON 1

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T12 TNPA2373

V1 TNPA2282AB COMMON 2

Note

COMMON 1: COMMON parts with model TH-50PHW3, 50PHD3 series.

COMMON 2: COMMON parts with model TH-42PW4, 42PWD4 series.

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