Checking The Resistance And Voltage - Symantec NetBackup 5230 Maintenance Manual

Checking the resistance and voltage

Verify that the physical exterior of the device is intact, clean, and in proper condition.
Refer to the following sections for maintenance instructions and information.
Locate the power buttons (1) on each power module.
Verify that both PDU cords are connected properly to separate outlets on the PDU
(2).
Symantec Storage Shelf AC power cable connections (rear panel)
Figure 5-4
See "Front and rear panels"
You can use a multimeter to check the grounding of each rack cabinet component
(optional).
To check the resistance using the multimeter
1 Set the multimeter to the resistance position.
2 Connect one lead to a fixed place in the equipment room. You may need to
extend the lead cable. Use the other lead to measure each grounding point
inside the cabinet.
3 Given the measuring accuracy, the measured resistance of each grounding
point should be approximately 1 ohm or less.
If the resistance that is measured at a grounding point exceeds 1 ohm, check
the grounding cable, the connecting terminal, and the fastening screw. Make
sure that all interfaces are secure.
Detailed safety and maintenance information
Checking the resistance and voltage
on page 53.
51