Test Products International 291 - Manual (Page 23)

23 22
F. MAINTENANCE
1. Battery Replacement: The 291 will display a bat-
tery symbol when the internal 9 Volt battery needs
replacement. The battery is replaced as follows:
a. Disconnect and remove all test leads
from live circuits and from the 291.
b. Loosen the screw from the back of the
291 battery cover.
c. Remove the battery compartment cover.
d. Remove old battery and replace with new
battery, observing the correct polarity.
e. Reassemble the instrument in reverse
order from above.
2. Cleaning your 291:
Use a mild detergent and slightly damp cloth to
clean the surfaces of the 291.
G. TROUBLE SHOOTING GUIDE
Problem Probable Causes
Does not power up
• Dead or defective battery
• Broken wire from battery
snap to PCB
Won’t display current readings
• Open fuse
• Open test lead
•
Improperly connected to
circuit under test
All functions except ohms read high
• Very weak battery that will
not turn on the low battery
indicator on the LCD
AC Volts do not read
• Very weak battery that will
not turn on the low battery
indicator on the LCD
WARRANTY
Please refer to product warranty card for
warranty statement.