Lexmark OptraImage SC 1275 Service Manual - Page 31
Lexmark OptraImage SC 1275 Manual
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Development Toner Empty / Toner Cartridge Detection Toner Empty Detection Light from the toner empty detection LED (LED1) on the toner empty/toner cartridge detecting board (PWB-B) is reflected by a mirror in the toner cartridge and received by photo sensor (PT1). The amount of light received by the photo sensor determines whether the toner is empty or nearly empty. 1-10
1-10
Development
Toner Empty / Toner Cartridge Detection
Toner Empty Detection
Light from the toner empty detection LED (LED1) on the toner
empty/toner cartridge detecting board (PWB-B) is reflected by a mir-
ror in the toner cartridge and received by photo sensor (PT1).
The amount of light received by the photo sensor determines
whether the toner is empty or nearly empty.