Panasonic DMC-TZ3PC, DMC-TZ3EB Safety Precaution, General Guidelines, Leakage Current Cold Check

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1 Safety Precaution

1.1.General Guidelines

1.IMPORTANT SAFETY NOTICE

There are special components used in this equipment which are important for safety. These parts are marked by

in the Schematic Diagrams, Circuit Board Layout, Exploded Views and Replacement Parts List. It is essen- tial that these critical parts should be replaced with manu- facturer’s specified parts to prevent X-RADIATION, shock, fire, or other hazards. Do not modify the original design without permission of manufacturer.

2.An Isolation Transformer should always be used during the servicing of AC Adaptor whose chassis is not isolated from the AC power line. Use a transformer of adequate power rating as this protects the technician from acci- dents resulting in personal injury from electrical shocks. It will also protect AC Adaptor from being damaged by acci- dental shorting that may occur during servicing.

3.When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been over- heated or damaged by the short circuit.

4.After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly installed.

5.After servicing, make the following leakage current checks to prevent the customer from being exposed to shock hazards.

1.2.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 metal- lic cabinet part on the equipment such as screwheads, connectors, control shafts, etc. When the exposed metal- lic part has a return path to the chassis, the reading should be between 1 MΩ and 5.2 MΩ. When the exposed metal does not have a return path to the chassis, the reading must be infinity.

1.3.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 1.5 kΩ, 10 W resistor, in parallel with a 0.15 μF capacitor, between each exposed metallic part on the set and a good earth ground, as shown in Figure 1.

3.Use an AC voltmeter, with 1 kΩ/V or more sensitivity, to measure the potential across the resistor.

4.Check each exposed metallic part, and measure the volt- age 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 0.75 V RMS. A leakage current tester (Simpson Model 229 or equiva- lent) may be used to make the hot checks, leakage cur- rent must not exceed 1/2 mA. 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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Contents Digital Camera Table of Contents Leakage Current Hot Check See Figure Safety PrecautionGeneral Guidelines Leakage Current Cold CheckFig. F1 How to Discharge the Capacitor on Flash PCBHow to Recycle the Lithium Ion Battery U.S. Only Before Use Replacement Procedure How to Replace the Lithium BatteryImportant Notice 1Other than U.S.A. and Canadian Market Service NavigationRecommended Lead Free Solder Service Parts Route Introduction General Description About Lead Free Solder PbFDefining methods How to Define the Model Suffix Ntsc or PAL modelTemporary cancellation of factory setting Turn the Power onDisplay the Initial Setting Set the Initial Setting Refer to Caution Default setting After Initial SettingsConfirmation Specifications Location of Controls and Components Page Error Code Memory Function Service ModeOIS How to read the error codeAbout * display in the above table How to returned to Normal DisplayConfirmation of Firmware Version Confirm the versionPoint Service Fixture and Tools Service Fixture & ToolsService Position When Replacing the Main PCBExtension Cable Connections for DMC-TZ2 Disassembly Flow Chart PCB Location Disassembly and Assembly InstructionsFor DMC-TZ3 Disassembly ProcedureFig. D2 For DMC-TZ2Removal of the Main P.C.B Removal of the Lens Unit Removal of the Sub P.C.B Fig. D9 Removal of the Battery Case Disassembly Procedure for LensPage Removal of the Drive Frame Frame and Both Side Cam Page Page Assembly for the Zoom Motor Unit and Master Flange Unit Removal of the CCD Unit Removal of the Zoom Motor UnitRemove the CCD unit except for replacing Grease apply point of lens unit are as follows Matrix Chart for Replaced Part and Necessary Adjustment Measurements and AdjustmentsMaintenace Cleaning Lens and LCD PanelS1. About Indication of The Schematic Diagram Diagrams and Replacement Parts ListS2.1. Overall Block Diagram S2. Block DiagramS3.1. Interconnection Diagram S3. Schematic Diagram25A S3.2. Flash Schematic DiagramTop Operation AF Assist Schematic Diagram S3.5. CCD Flex Schematic Diagram DMC-TZ2 S3.6. CCD Flex Schematic Diagram DMC-TZ3 Focus Encoder S3.7. Lens Flex Schematic DiagramS4.1. Flash P.C.B S4. Print Circuit BoardS4.2. Top Operation P.C.B. / S4.3. AF Assist P.C.B S4.4. CCD Flex P.C.B. DMC-TZ2 S4.5. CCD Flex P.C.B. DMC-TZ3 S4.6. Lens Flex P.C.B Page Important Safety Notice S5. Replacement Parts ListRef.No Part Name & Description Pcs Remarks Speaker ML614S/ZT Battery Ref.No Part Name & Description Camera BAG DE-A45BA Battery Charger S6.1. Frame and Casing Section S6. Exploded ViewS6.2. Packing Parts and Accessories Section S6.3. Packing Parts and Accessories Section
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