Part numbers:
Xerox Phaser 8400 - 119-6495-80
Xerox Phaser 8500 - 119-6521-01, 137E14020, 137E14021, 137E24120, 137E24121
Xerox Phaser 8550 - 137E14020-B
Xerox Phaser 8560 - 137E24440, 137E24442, 137E24443, 137E24444, 622S01654

Replacement recommendations:
If your Xerox Phaser 8400, 8500, 8550, or 8560 experiences power issues, RAM errors, error codes, or other electrical problems, it may be necessary to replace the Electronics Module. For RAM errors, first attempt to replace the RAM; if the issue persists, proceed with replacing the Electronics Module.

Compatible models:
Phaser 8400N
Phaser 8500N
Phaser 8550N
Phaser 8560N