Power Supply Troubleshooting; Vdc Power Troubleshooting - Xerox Phaser 7500 Service Manual

Power Supply Troubleshooting

+5 VDC Power Troubleshooting

Phaser 7500 Printer Service Manual
Troubleshooting Reference Table
Applicable Parts
Main LVPS, PL18.1.11
■
Troubleshooting Procedure Table
Step Action and Questions
1
Turn On the power.
Is the voltage between the Main LVPS
J510-1 (+) and the GND (-) +5VDC?
2
Is the voltage between the Main LVPS
J4-1 and J4-3 line voltage?
3 Turn the power Off and disconnect
the Main LVPS J501 and J510.
Turn On the printer 15 seconds later.
Is the voltage between the Main LVPS
J510-1 (+) and the GND (-) +5VDC?
4 Is the voltage between the Main LVPS
J510-2 (+) and the GND (-) +5VDC?
General Troubleshooting
Wiring and Plug/Jack Map References
"Map 9 - Main LVPS, Waste Toner
■
Bottle" on page 10-25
Yes No
Go to step 4. Go to step 2.
Go to step 3. Go to
Troubleshooting
" on page
Check the Replace the
+5VDC circuit Main LVPS
for a short (REP 18.7,
circuit to page
ground.
Check the wire Replace the
to the relevant Main LVPS
component for (REP 18.7,
an open circuit page
and poor
continuity.
"AC Power
4-13.
8-194).
8-194).
4-15