Panasonic TC-L32C5H, TC-L32C5L Schematic

ORDER NO.MTNC120571CE

B01 Canada: B61

LCD TV

Model No. TC-L32C5H

TC-L32C5L

©Panasonic Corporation 2012. Unauthorized copying and distribution is a violation of law.

TABLE OF CONTENTS			Page
1	Safety Precaution ------------------------------------------------------------------------------------------------		3
	1.1. General Guidelines ----------------------------------------------------------------------------------------		3
2 Warning -------------------------------------------------------------------------------------------------------------			4
	2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensitive(ES) Devices 4
	2.2. About lead free solder (PbF) ----------------------------------------------------------------------------		5
3	Service Navigation-----------------------------------------------------------------------------------------------		6
	3.1. Service Hint--------------------------------------------------------------------------------------------------		6
	3.2. Applicable signals------------------------------------------------------------------------------------------		7
4	Specifications -----------------------------------------------------------------------------------------------------		8
5	Troubleshooting Guide-----------------------------------------------------------------------------------------		9
	5.1	No Power -----------------------------------------------------------------------------------------------------	9
	5.2	Abnormal Display ------------------------------------------------------------------------------------------	10
	5.3	No Display ---------------------------------------------------------------------------------------------------	11
	5.4	Sound Problem ---------------------------------------------------------------------------------------------	12
	5.5	Remote Control Malfunction ----------------------------------------------------------------------------	13
6	Disassembly and Assembly Instructions ---------------------------------------------------------------		14
7	Block Diagram----------------------------------------------------------------------------------------------------		18
8	Wiring Connection Diagram ---------------------------------------------------------------------------------		20
	8.1. Caution Statement --------------------------------------------------------------------------------------		20
	8.2. Wiring --------------------------------------------------------------------------------------------------------		20
9	Exploded View and Replacement Parts List -----------------------------------------------------------		21
	9.1. Exploded View -------------------------------------------------------------------------------------------		21
	9.2. Replacement Parts List----------------------------------------------------------------------------------		23

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1 Safety Precautions

1.1.General Guidelines

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.

4.When conducting repairs and servicing, do not attempt to modify the equipment, its parts or its materials.

5.When wiring units (with cables, flexible cables or lead wires) are supplied as repair parts and only one wire or some of the wires have been broken or disconnected, do not attempt to repair or re-wire the units. Replace the entire wiring unit instead.

6.When conducting repairs and servicing, do not twist the Faston connectors but plug them straight in or unplug them straight out.

1.1.1. Leakage Current Cold Check

1.Unplug the AC cord and connect a jumper between the two prongs on the plug.

2.Measure the resistance value, with an ohmmeter, between the jumpered AC plug and each exposed metallic cabinet part on the equipment such as screwheads, connectors, control shafts, etc. When the exposed metallic part has a return path to the chassis, the reading should be 100 Mohm and over. When the exposed metal does not have a return path to the chassis, the reading must be .

1.1.2. Leakage Current Hot Check (See Figure 1.)

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

2.Connect a 1.5kohm, 10 watts resistor, in parallel with 0.15μF capacitors, 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 an AC voltmeter, with 1000 ohms/volt or more sensitivity, to measure the potential across the resistor.

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

5.Reverse the AC plug in the AC outlet and repeat each of the above measurements.

6.The potential at any point should not exceed

0.75volts RMS. A leakage current tester (Simpson Model 229 or equivalent) may be used to make the hot checks, leakage current must not exceed 1/2 milliamp. In case a measurement is outside 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

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2 Warning

2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensitive (ES) Devices

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 transistors and semiconductor [chip] components. The following techniques should be used to help reduce the incidence of component damage caused by electrostatic 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, which should 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 aluminum 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, aluminum foil or comparable conductive 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 ham less 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 to damage an ES device).

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2.2. About lead free solder (PbF)

Note: Lead is listed as (Pb) in the periodic table of elements.

In the information below, Pb will refer to Lead solder, and PbF will refer to Lead Free Solder. The Lead Free Solder used in our manufacturing process and discussed below is (Sn+Ag+Cu). That is Tin (Sn), Silver (Ag) and Copper (Cu) although other types are available.

This model uses Pb Free solder in it’s manufacture due to environmental conservation issues. For service and repair work, we’d suggest the use of Pb free solder as well, although Pb solder may be used.

PCBs manufactured using lead free solder will have the PbF within a leaf Symbol PbF stamped on the back of PCB.

Caution

•Pb free solder has a higher melting point than standard solder. Typically the melting point is 50 ~ 70 °F (30~40 °C) higher. Please use a high temperature soldering iron and set it to 700 ± 20 °F (370 ± 10 °C).

•Pb free solder will tend to splash when heated too high (about 1100 °F or 600 °C).

If you must use Pb solder, please completely remove all of the Pb free solder on the pins or solder area before applying Pb solder.If this is not practical, be sure to heat the Pb free solder until it melts, before applying Pb solder.

• After applying PbF solder to double layered boards, please check the component side for excess solder which may flow onto the opposite side. (see figure below)

Suggested Pb free solder

There are several kinds of Pb free solder available for purchase. This product uses Sn+Ag+Cu (tin, silver, copper) solder. However, Sn+Cu (tin, copper), Sn+Zn+Bi (tin, zinc, bismuth) solder can also be used.

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3 Service Navigation

3.1 Service Hint

Power Board	Main Board

Key Board

IR Board

	Board Name	Function	Remarks
	Main Board	Speaker out, AV Terminal, HDMI in, SD Card, PC
		in, Digital Signal Processor, Nile-Tcon, Tuner	All boards			are	non
	IR Board	Remote Receiver, LED	serviceable			and	should
	Power Board	Power (AC/DC), DC-DC	be exchanged for service
	Key Board	Control Button, Power switch

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3.2. Applicable signals

COMPONENT (Y, PB, PR), HDMI

Mark: Applicable input signal

PC (from D-sub terminal/ HDMI terminal)

Applicable input signal for PC is basically compatible to VESA standard timing

Applicable input signal for PC is basically compatible to HDMI standard timing

Note:

•Signals other than above may not be displayed properly.

•The above signals are reformatted for optimal viewing on your display.

•PC signal is magnified or compressed for display, so that it may not be possible to show fine detail with sufficient clarity.

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4 Specifications

			TC-L32C5L		TC-L32C5H
	Power Source		AC 110-220 V, 50Hz		AC 110-127 V, 60Hz
	Rated Power Consumption		105 W
	Standby Power Consumption		1 W		0.5W
			With Pedestal:
	Dimensions (W × H × D)		778.5 mm × 546.7 mm × 230 mm
			Without Pedestal (TV only):
			778.5 mm × 494.2 mm × 127.4 mm
			With Pedestal:		With Pedestal:
	Mass		10.2 kg		10.3 kg
			Without Pedestal (TV only):		Without Pedestal (TV only):
			9.2 kg		9.2 kg
		Aspect Ratio	16:9
	Display panel		697.7 mm (H) × 392.3 mm (V)
		Visible screen size
			31.5 inches (diagonal)
			1,049,088 (1,366 (W) × 768 (H))
		Number of pixels
	Sound	Speaker	(100 mm × 27 mm × 27 mm) × 2, 16 Ω
			10 W (5 W + 5 W), 10% THD
		Audio Output
	Receiving System		Analogue: NTSC / PAL-M / PAL-N		DVB-T/NTSC
			Digital: SBTVD-T
			VHF: 2-13
	Channel Coverage		UHF: 14-69
			CATV (Analogue): 1-135
	Aerial input		VHF / UHF
	Operating Conditions		Temperature :0 °C - 35 °C
			Humidity :20 % - 80 % RH (non-condensing)

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