Paxar 656 / 636 user manual Electrical Trouble Shooting, Power Up / Sign On / Communications

Electrical Trouble Shooting

Power Up / Sign On / Communications

Problem	Probable Cause	Corrective Action
Machine fails to power up with no	1) Incorrect power amplitude.	1) Confirm that the AC entry is
light present in the AC power		configured for the line voltage
switch.		intended to be applied to the
		machine. Failure to do so can
		damage the machine's internal
		power supply. Refer to the "Fuse
		Configuration".
	2) Lack of power to machine.	2) Check that both ends of the power
		cord are plugged in securely.
		2A) Confirm that the outlet the
		machine is plugged into has power.
	3) Missing or blown fuse(s)	3) Check that the fuse(s) located
		inside the AC entry are present and
		intact. Replace as needed. Refer to
		the "Fuse Configuration".

Machine fails to power up with light present in the AC power switch.

1) Unconnected cable / connector	1) Power off and remove the power
inside machine.	cord from the AC entry. Remove
	the back cover and inspect the
	cables and connectors to and from
	the power supply. Refer to the
	"Electrical System Schematic".
2) Thermal Control Board unplugged	2) Power off and remove the power
from the Mother Board	cord from the AC entry. Remove
	the back cover and reseat the
	Thermal Control Board.

Front panel displays no text or nothing at all.

1) Front panel cable unplugged.

1)Power off and remove the power cord from the AC entry. Remove the back cover and inspect the cable and connectors to and from the front panel. Refer to the "Electrical System Schematic".

Users Manual Model 656/636 Electrical Trouble Shooting • 45