NEC MultiSync LCD1550V Service Manual

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5-83.3 Leakage Current( It is applied to both the PSU built-in set and the set with AC adapter. )Perform the tests at the points indicated below and make sure that the leakage current is within theprescribed range. (This test must be performed after the electric strength test.)Measurement PointsMake measurements between the terminals of AC inlet (other than the ground terminal) and each ofthe following points :Signal cable connector shellChassis baseNote : Power switch status ; "ON" and "OFF" condition.The standard for a decision : Less than 1.5 mA. ( Input voltage 255V AC (60Hz))Measurement condition : The leakage ammeter builds in the resistor of 1500 ohm, and uses a thingwith the bypass condenser of 0.15uF.3.4 Insulation Resistance( It is applied to the PSU built-in set. )Perform the tests at the points indicated below and make sure that the insulation resistance is within theprescribed range. (This test must be performed after the electric strength test.)Measurement PointsMake measurements between the power supply terminals (other than the ground terminal) and eachof the following points : (See note below.)Signal cable connector shellChassis baseNote : The two terminals other than the ground terminal (Power supply cord) must be shorted out.The standard for a decision : More than 30Mohm. (Input voltage 500V DC)