Panasonic PT-LB10NTU / PT-LB10NTE / PT-LB10U / PT-LB10E / PT-LB10VU / PT-LB10VE / PT-LB10SU / PT-LB10SE Service Manual ▷ View online
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1 Safety Precautions
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1.1 General Guidelines
1.2 Leakage Current Check
1.3 UV Precaution and UHM Lamp Precautions
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1.1 General Guidelines
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For continued safety, no modification of any circuit must be attempted.
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Unplug the power cord from the power outlet before disassembling this projector.
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It is advisable to use an isolation transformer in the AC power line before the service.
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Observe the original lead dress during the service. If a short circuit is found, replace all the
parts overheated or damaged by the short circuit.
parts overheated or damaged by the short circuit.
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After the service, all the protective devices such as insulation barriers, insulation papers,
shields, and isolation R-C combinations must be properly installed.
shields, and isolation R-C combinations must be properly installed.
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After the service, check the leakage current to prevent the customer from getting an electric
shock.
shock.
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1.2 Leakage Current Check
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1. Prepare the measuring circuit as shown in Fig.1.
Be sure to use a voltmeter having the performance described in Table 1.
Fig. 1
Table 1
Fig. 2
2. Assemble the circuit as shown in Fig. 2. Plug the power cord in a power outlet.
3. Connect M1 to T1 according to Fig. 2 and measure the voltage.
4. Change the connection of M1 from T1 to T2 and measure the voltage again.
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