Finest 509 - Maintenance and Replaceable Parts

*/ Miscellaneous */
#define BUFSIZE 0x4000 /* SIze of comm buffer */
#define BUFFEREMPTY (–1) /* Buffer empty */
#define ON 1
#define OFF 0
6.1 General Maintenance
WARNING!
REPAIRS OR SERVICING NOT COVERE D IN THIS MANUAL
SHOULD ONLY B E PERFORMED BY QUALIFIED
PERSONNEL. TO AVOID ELECTRICAL SHOCK, DO NOT
SERVICE UNLESS YOU ARE QUALIFIED TO DO SO.
Periodically wipe the case with a damp cloth and detergent; do not
use abrasives or solvents. Water, dirt, or contamination in the A or
mAµA input terminals may harm this Meter.
Calibrate this Meter once a year to maintain i ts performance
specifications.
6. MAINTENANCE AND REPLACEABLE PARTS
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6.2 Battery Replacement
The Meter uses a 9V battery (NEDA 1604 or IEC 6F22). To
replace the battery, remove the two screws of the battery com
parament from the back of the Meter and lift off the cover of the
c ompartment. Repla c e the battery. Reattach the battery
compartment to the back of the Meter, and reinstall the screws.
6.3 Fuse(s) Test
To test the internal fuses of this Meter:
1. Set the rotary switch to the “ ” position.
2. Turn Meter on.
3. To test F2 (15A, 600V), insert a test lead into the VΩHz CAP
input terminal and touch the probe to the A input terminal. The
display should read about 0.000V. If the display reads OFL
(overload), replace the fuse and test again. If the display reads
any other value, have this Meter serviced.
4. To test F11 (1A, 600V), move the probe from the A input
terminal to the mAµA input terminal.
The display should read about 1.2V. If the displa y reads OFL
(overload), replace the fuse and test again. If the display reads
any other value, have this Meter serviced.
6.4 Fuse(s) Replacement
Follow these steps to replace the internal fuse(s).
1. Unplug the test leads. Remove the rubber boot from the
instrument.
2. Remove the screws in the rear of the instrument and separate
the front and rear housing.
3. Replace the fuse( s ) with the same type and size as the one
removed.