NEC MultiSync LCD1550V Service Manual page 54

3.3 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 the
prescribed range. (This test must be performed after the electric strength test.)
Measurement Points
Make measurements between the terminals of AC inlet (other than the ground terminal) and each of
the following points :
Signal cable connector shell
Chassis base
Note : Power switch status ; "ON" and "OFF" condition.
The standard for a decision : Less than 1.5 mA. ( Input voltage 255V AC (60Hz))
Measurement condition
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 the
prescribed range. (This test must be performed after the electric strength test.)
Measurement Points
Make measurements between the power supply terminals (other than the ground terminal) and each
of the following points : (See note below.)
Signal cable connector shell
Chassis base
Note : 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)
: The leakage ammeter builds in the resistor of 1500 ohm, and uses a thing
with the bypass condenser of 0.15uF.
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