HP LaserJet 5000 Service Manual - Page 229
Table 7-3. No AC Power, Cause, Action, Remove the DC Controller Assembly. Measure
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Table 7-3. No AC Power Cause Action No correct voltage present at the outlet. Plug the power cord into another AC circuit outlet. Inform the customer that the correct line voltage is not available at the outlet. The power cord is not firmly plugged into the Insert the power plug firmly. printer and the outlet. Blown fuse. 1. Check the fuse (F1) on the Power Supply. 2. Replace the fuses if necessary. Defective power switch. Remove the DC Controller Assembly. Measure the resistance between the two terminals of the power switch (SW101) by applying the tester probes to the terminals. The resistance must be low (under 1 KΩ) when the power is turned ON, and high (over 6 MΩ) when the switch is turned OFF. Otherwise, replace the Power Supply. Defective AC receptacle or AC power line. Check the printer's AC receptacle and wiring for the AC power line. If no problem is found, replace the Power Supply. 7-8 Troubleshooting EN