Part numbers:
DV-3100, 302LV93080, 302LV93081, 302LV93082

Common error codes: Related to Developer
Code 7100 - Toner sensor error
Code 7400 - Developer unit non-installing error

Image Quality problems:
No Image appears (entirely white), Image is too light, White/Black streaks are printed vertically/horizontally or Repetitive defects.

Recommended action:
Reinsert the connector. Also check for continuity within the connector cable. If none, replace the developer unit.

Print quality repetitive defects gauge 44.9 mm/ 1 3/4” Developer roller
Replace the developer unit.

Compatible Models:
ECOSYS FS-2100DN
ECOSYS FS-4100DN
ECOSYS FS-4200DN
ECOSYS FS-4300DN
ECOSYS M3040idn
ECOSYS M3145idn
ECOSYS M3540idn
ECOSYS M3550idn
ECOSYS M3560idn
ECOSYS M3655idn
ECOSYS M3660idn
ECOSYS M3860idn
ECOSYS M3860idnf
ECOSYS P3045dn
ECOSYS P3050dn
ECOSYS P3055dn
ECOSYS P3060dn
ECOSYS P3155dn