JLG 25AM Service And Maintenance Manual page 70

Voltage Measurement
Figure 3-1. Voltage Measurement (DC)
• If meter is not auto ranging, set it to the correct range
(See multimeter's operation manual)
• Use firm contact with meter leads
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SECTION 3 - TROUBLESHOOTING
Resistance Measurement
Figure 3-2. Resistance Measurement
• First test meter and leads by touching leads together.
Resistance should read a short circuit (very low resis-
tance)
• Circuit power must be turned OFF before testing resis-
tance
• Disconnect component from circuit before testing
• If meter is not auto ranging, set it to the correct range
(See multimeter's operation manual)
• Use firm contact with meter leads
3-3