问题：Printer does not detect ribbon bar code sensor
BARCODE DAMAGED/ REVERSE RIBBON SPOOLS error message.
Barcode read error: The printer does not detect the presence of the ribbon bar code sensor.
Following these steps in order to correct the problem:
- Power down the printer. Remove the ribbon, on the right ribbon hub, wipe the two lenses of the ribbon bar code sensor with a lint-free cloth or cotton swab.
- Power on the printer. If the message appears again, check the barcode labels on ribbon to see if there is damaged or ink smearing on barcode area, replace the ribbon if needed.
- Power on the printer. If the message appears again, power down the printer. Replace the ribbon bar code sensor with p/n 179526-901 Sensor Assy, Ribbon minder/Barcode. It will be necessary to update printer firmware to current Factory Release Level. Email Tech Support: firstname.lastname@example.org if the firmware needed.
- Power on the printer. If the message appears again, power down the printer and replace the controller board.