MAP 1520: Power
This procedure is used to locate power problems in the system rack or I/O rack. If a
problem is detected, this procedure helps you isolate the problem to a failing unit.
Observe the following safety notices during service procedures.
DANGER
An electrical outlet that is not correctly wired could place hazardous voltage
on metal parts of the system or the devices that attach to the system. It is the
responsibility of the customer to ensure that the outlet is correctly wired and
grounded to prevent an electrical shock.
Before installing or removing signal cables, ensure that the power cables for
the system unit and all attached devices are unplugged.
When adding or removing any additional devices to or from the system,
ensure that the power cables for those devices are unplugged before the
signal cables are connected. If possible, disconnect all power cables from the
existing system before you add a device.
Use one hand, when possible, to connect or disconnect signal cables to
prevent a possible shock from touching two surfaces with different electrical
potentials.
During an electrical storm, do not connect cables for display stations, printers,
telephones, or station protectors for communication lines.
CAUTION:
This product is equipped with a three–wire power cable and plug for the user’s
safety. Use this power cable with a properly grounded electrical outlet to avoid
electrical shock.
CAUTION:
This unit has more than one power supply cord. To reduce the risk of electrical
shock, disconnect two power supply cords before servicing.
CAUTION:
Energy hazard, remove power before servicing. Disconnect two power supply
cords.
88 Service Guide
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