Printronix P7000 Series Maintenance Manual page 191

Symptom
Power Failures
No power, and control panel
blank, and card cage fan not
running
Table 6. General Symptom List
1. Check that the AC power outlet has power. Restore AC
power if necessary.
2. Unplug the printer AC power cord from the printer (leave it
plugged into the power outlet) and check for AC power at
the printer end of the cord. If there is no power through the
AC power cord, replace it. Plug the AC power cord into the
printer and power outlet.
3. Remove the paper path or pedestal top cover. Verify that
the AC-In power cable and the AC power input cables are
connected to the on/off switch-circuit breaker.
(See Figure 52, page 356.) Make sure all ground
connections are clean and tight.
4. Check that AC-in power cable connector P1 is connected
to J1 on the power supply board. Reseat the connector.
5. Check that power supply cable connector P101 is
connected to J101 on the controller board. Reseat the
connector.
6. Check all cable connections on the controller board.
7. If the printer has the CT board, make sure it is correctly
seated in the controller board.
8. Disconnect AC-in power supply cable connector P1. Set
the circuit breaker to 1 (on). Measure AC voltage at pins 1
and 2 of connector P1. If no voltage, replace the circuit
breaker. If there is voltage, replace the power supply
board.
General Symptom List
Solution
191