Amprobe HD160C Digital-Multimeter - Manual (Page 20)

14
Maintenance and Repair
If there appears to be a malfunction during the operation of the meter, the following steps
should be performed in order to isolate the cause of the problem:
1. Check the battery.
2. Review the operating instructions for possible mistakes in operating procedure.
3. Inspect and test the test leads for a broken or intermittent connection.
4. Inspect and test the fuses. See Battery/Fuse Replacement for additional
information.
Except for the replacement of the battery or fuse, or test probes, repair of the multimeter
should be performed only by a Factory Authorized Service Center or by other qualified
instrument service personnel. The front panel and case can be cleaned with a mild solution
of detergent and water. Apply sparingly with a soft cloth and allow to dry completely
before using. Do not use aromatic hydrocarbons or chlorinated solvents for cleaning.
Battery/Fuse Replacement (Figure 10)
�� Warning
To prevent electrical shock or meter damage, disconnect the meter’s test leads from any
circuit and the meter then turn the meter off before removing the rear case cover.
PRECAUTIONS
• The hex head case screws each have a washer and gasket integral to the meter’s
water/dust-proof integrity. Upon opening, be sure these are retained and replaced
when closing.
• Prying the rear case cover off with a knife or screwdriver is not recommended as this
may damage the case rim flanging and/or gasket thereby destroying the water/dust-
proof integrity.
• The fuse cover is integral to the EN 61010-1 Cat IV safety rating and must be replaced
to avoid potential shock hazards.
• Battery or fuse replacement should be performed in a clean environment and with
appropriate care taken to avoid contaminating the meter’s interior components.
• There are no user serviceable parts or components on the circuit boards. Disassembly
beyond the instructions list below for battery and/or fuse replacement will void all
warranties.
BATTERY REPLACEMENT
Disconnect the test leads, turn off the meter and remove the holster. Remove the 4 hex head
battery cover screws from the rear case cover using the 2 mm hex wrench as Shown in Figure
10. Replace the battery with a NEDA type1604 or equivalent 9V alkaline battery. Make sure the
battery compartment seal is in good condition and properly aligned before replacing the
cover and screws.
FUSE REPLACEMENT
The fuse is located under the protective cover. Disconnect the test leads, turn off the meter
and remove the holster. Remove the six hex head screws in the face plate using the 2 mm hex
wrench mounted in holster. Remove the rear case cover carefully and place the front of the