PRODUCT SAFETY SOLUTIONS
© 2012 Educated Design & Development, Inc. All rights reserved. Rev B: February, 2012 Page 16 of 19
Solution: Check to make sure it is the correct type and rating as indicated in the Maintenance Section of the
Manual.
Solution: Verify that the rear panel Voltage Selector switch is in the proper position. The Line fuse is
TROUBLESHOOTING: (continued)
designed to blow if the LT-952 is connected to 230 Volts and the Voltage Selector switch is set to 115. If
the Voltage Selector switch is set to the proper position and the fuse still blows, then the LT-952 has been
damaged and should be returned to E.D.&D. for repair.
Problem The LT-952 always seems to measure near zero leakage when measuring leakage surface
to reference.
Solution: The momentary Ground switch on the LT-952 must be toggled to OPEN. Otherwise, the leakage
current is effectively shunted around the meter circuit to the ground.
REFERENCE STANDARDS:
60950, 60335, and IEC 1010 based Standards.
MAINTENANCE/STORAGE:
See the instructions in the Calibration section of this manual. No other periodic maintenance is required.
Always keep your tester clean by wiping the surface with a clean towel. Commercially available cleaning
products can be used, provided that they are mild, non-corrosive, and non-abrasive. Blue liquid window
cleaner works well.
This instrument contains no user serviceable parts. A special calibration sticker is provided. Removal of
the calibration sticker will void the required calibration as well as the warranty.
PARTS/SERVICE:
No user serviceable parts inside. Return the LT-952 to ED&D for service. Contact ED&D for an RMA #
before returning.
Fuse locations:
See Product Components Figure 2- Rear Panel on page 8 for fuse locations.
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