Error code 73:
Symptom: Rotary valve does not stop at the required station after 2 times
rotation
Probable cause: 1. Photointerrupter defective
2. Positioning disc broken
3. Photointerrupter for position detection disturbed by
strong light source
Remedy: 1. Replace photointerrupter PC board
2. Replace positioning disc
3. Eliminate light source
Just found this information in my older VIP E300 manual.
Lynne A. Bell, HT (ASCP)
Technical Specialist, Histology
Central Vermont Medical Center
130 Fisher Road
Barre, VT 05641
802-371-4923
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