Printronix P7000 Series Maintenance Manual page 50

Chapter 3
Troubleshooting Display Messages
Table 4. P7000 ASCII (Spool) Error Messages List
Displayed Message
48V CIRCUIT*
See User Manual
48V PWR FAIL*
50
Explanation
Either the power supply is
not generating a proper 48
Volts or the controller board
is not detecting a 48 Volt
output from the power
supply board.
48 Volt Power Failed: an
internal power failure.
Solution
1. Make sure the power supply
board is correctly connected to
the controller board.
2. Power on the printer. If the
message appears, do the power
supply operational check (page
264). If the power supply fails the
check, replace it. If it passes the
check, go to the next step.
3. Power on the printer. If the
message appears, replace the
controller board. Record the
message and return it with the
defective board.
1. Power off the printer. Remove the
paper path or pedestal top cover.
Check that power supply
connector P101 is fully seated in
connector J101 on the controller
board.
2. If the printer has the CT board,
make sure it is correctly seated in
the controller board.
3. Power on the printer. If the
message appears, replace the
hammer bank logic cable
assembly (P108) and the power
cable assembly (P105). (Refer to
Appendix A.)
4. Power on the printer. If the
message appears, do the power
supply operational check (page
264). If the power supply fails the
check, replace it. If it passes the
check, go to the next step.
5. Power on the printer. If the
message appears, replace the
controller board. Record the
message and return it with the
defective board.
6. Power on the printer. If the
message appears, replace
shuttle frame assembly.