Troubleshooting The Power System; Power System Troubleshooting Procedure - HP 3000 Series Handbook
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Also See for 3000 Series:
- Installation and service manual (80 pages) ,
- Installation manual (42 pages) ,
- Manual (20 pages)
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Troubleshooting the Power System
If none of the front panel LEDs are lit, DC power is absent and AC power is possibly absent.
Note
•
The system uses an auto-ranging power supply. If a severe line transient
occurs when the system is being powered up, the power supply may attempt
to operate in the 220 VAC range. If this occurs and the line voltage is 110
VAC, the system will not power up correctly. Do the following:
1.
Place the power switch in the OFF position.
2. Unplug the system line cord for one minute.
3. Plug in the system line cord and power up the system.
Check for AC power and then DC power source by following the procedure below until the
problem is solved.
Note
•
If the system appears to function correctly, e.g., Operating System prompts
are returned on a user terminal if
(Return)
is pressed, and there are no front
panel LEDs on, the LEDs on the backplane have probably failed. The
backplane should be replaced at a convenient time.
Table 5-3. Power System Troubleshooting Procedure
CAUSE/SYMPTOM
ACTION
1. System powered on?
Depress the power switch and check the front panel LEDs.
2. PowerTrust UPS installed?
No. Skip to Step 3.
Yes. Continue with this step.
a. Check that the power output cable is connected from the
PowerTrust UPS output receptacle to the system
AC
input
receptacle.
Check that the
AC
power cord from the PowerTrust UPS is
plugged into the
AC
power source receptacle. Set the PowerTrust
UPS output switch to the ON position.
b. Connect the power cable to a different output receptacle on the
PowerTrust UPS. Try each PowerTrust UPS output receptacle.
c. Disconnect the power cable from the system
AC
input
receptacle. Disconnect the
AC
power cord from the PowerTrust
UPS, connect it to the system
AC
input receptacle, and then plug
it into the
AC
power source.
If the front panel LEDs are lit, replace the PowerTrust UPS.
Otherwise, continue to Step 3.
3. Tripped circuit breaker?
Check for
AC
power at the power source. Plug another device
into the receptacle.
Check the circuit breaker or breaker panel. Reset the circuit
j
breaker if necessary.
Troubleshooting
5-5
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Troubleshooting
