Ricoh SP4110N

• Code: 500
• Description: Main motor error
  A main motor lock signal was not detected within 700 ms after the main motor started to rotate.
• Causes: • Main motor defective • Mechanical overload on the drive mechanism

• Code: 541
• Description: Fusing thermistor error
  The fusing temperature did not rise higher than 20C within 11 sec. after the main motor switched off. -or- The fusing temperature was detected lower than 0oC for over 1 sec. after the power relay switched on.
• Causes: • Thermistor disconnected, defective • Fusing lamp disconnected, defective • Fuse blown • Power supply board defective • Fusing unit connected improperly

• Code: 542
• Description: Fusing temperature warm-up error
  Just before reaching warm-up temperature, the fusing temperature did not rise above 80C within 17.5 sec. after the power relay switched on. Note: • The machine starts to test the temperature 2 sec. after the machine powers on if the machine temperature is above 45oC. • If the machine temperature is below 45C, the temperature is not sampled until the machine temperature reaches 45C.
• Causes: • Thermistor defective • Fusing lamp open • Fusing thermostat open • Power supply board Defective • Defective connection of the fusing unit

• Code: 543
• Description: Fusing overheat error - software
  The fusing temperature was detected higher than 24oC for longer than 200 ms while the main motor was on or within 60 sec. after the main motor switched off. -or- The fusing temperature was detected higher than 235C for longer than 200 ms at any other time.
• Causes: • Fusing thermistor defective • Power supply board defective

• Code: 545
• Description: Fusing lamp remains on
  The fusing lamp remained on longer than 12 sec. after the fusing unit reached optimum temperature and the main motor switched off.
• Causes: • Fusing thermistor defective • Power supply board defective • Defective connection of the fusing unit

• Code: 546
• Description: Unstable fusing temperature
  During standby, the fusing temperature went below 60 °C twice or went above 60 °C three times within 500 ms. A 60C increase in fusing temperature was detected at five 1-sec. intervals within 60 to 90 sec. before reaching fusing temperature.
• Causes: • Fusing thermistor defective • Power supply board defective • Defective connection of the fusing unit