MAP 1520: Power
This procedure is used to locate power problems in the CEC drawer, I/O drawer(s) or 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 communications lines.
D05
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.
C01
CAUTION:
This unit has more than one power supply cord. To reduce the risk of electrical shock, disconnect
two power supply cords before servicing.
C21
CAUTION:
Energy hazard, remove power before servicing. Disconnect two power supply cords.
C23
Chapter 3. Maintenance Analysis Procedures 83
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