Code :

Code: 09
Description: Poor Fusing
Causes: 1. Use recommended paper? 2. Check fusing temperature 3. The machine was under the low temperature for a long time?
Remedy: 1. Should use recommended paper 2. Check engine board. If you have not thermometer, measure the thermistor voltage to CPU, If 2.98V+/-5% in printing CPU works well. Then, disassemble fuser and check the thermistor contact and thermistor. 3. Re-check after putting the machine in the warm place for certain period.

Code: 11
Description: Partial blank image (periodic)
Causes: 1. Develope roller scar or particle 2. Scar or particle (94 mm) 3. Transfer roller scar or particle (47 mm)
Remedy: 1-2. Replace toner cartridge 3. Replace transfer roller

Code: 12
Description: Different image density (left and right)
Causes: 1. Charge roller’s pressure force unbalance 2. Dev. roller and OPC or Dev. roller and blade’s pressure force unbalance 3. Transfer roller’s pressure force unbalance of each side
Remedy: 1-2. Change toner cartridge 3. Check left and right spring of transfer roller and the spring pressing the developer inside the machine

Code: 13
Description: Horizonral band
Causes: 1. Unstable high voltage contact 2. Charge roller’s contamination 3. Contamination of heat roller 4. Malfunction of LSU
Remedy: 1. Clean each contact and check good contact 2. Clean charge roller 3. Replace fuser unit 4. Check engine B’d

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