MANUAL IM635
Maintenance
Page 42
9.4.
Chassis Cleaning
Clean chassis using a lint-free cloth moistened with water and mild detergent. For harder to clean areas, such as
inside corners of chassis, use a vacuum cleaner.
9.5.
Connector Cleaning
Where small amounts of rust, corrosion, and/or oxide deposits are present on connectors, clean externally with a
soft-bristle brush, aluminum wool, or internally with an acid brush; then wash with a non-corrosive solvent.
Exercise care to ensure no metal filing or residue remains inside the connector and the connector is thoroughly
dry. Where rust, corrosion, and/or oxide deposits are present in large quantities, replace the connector.
9.6.
Line Voltage Fuse Replacement
The following steps provide procedures to replace the AC fuse. Please see the parts list for appropriate fuse size.
Sufficient power levels are present at the Power Input Assembly to cause personal injury. Ensure
that the power cord is disconnected before attempting to change fuses.
Do NOT connect or apply power to this instrument until the power entry module has been
adjusted to the operational line voltage.
1.
Turn off the unit and disconnect the power cord from the power entry module.
2.
Use a small screwdriver to open the fuse drawer cover.
3.
Use a small screwdriver to slide the fuse drawer out of the power entry module.
4.
Remove the defective fuse and install replacement fuse.
5.
Insert the fuse drawer back into the power entry module.
6.
Close the fuse drawer cover and verify that the indicated voltage is correct for your region. If voltage is
incorrect, repeat steps 2 – 3 to remove fuse drawer and reorient to proper voltage.
7.
Fuse is now replaced and unit is ready for normal operation.
