Question about Sharp AR-M550N Copier
This is occur due to LSU (laser diode,reception element,apc circuit )trouble or LSU drive circuit (asic) trouble.
1.first go to service mode (simulation mode)& reset it
2. still error occurred, check wire harness of laser unit & clean laser unit mirrors,reflector polygon mirror.
3. still occur just replace toner cartridge because once it works for me.
4. finally replace laser diode.
Posted on May 24, 2011
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Posted on Jan 02, 2017
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