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SERVICE Sp problem Trouble Sc Error +RESET problem Rex Rottary 627, Ricoh Aficio 2027 SC545, 542, 543, 544, 546
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Rex Rottary 627, Ricoh Aficio 2027 SC545 545 A Fusing overheat error 3 After warmup, the hot roller attained full operating temperature and maintained this temperature for 10 sec. without the hot roller rotating. • Hot roller thermistor is out of position • Fusing lamp broken • Thermostat broken
check & RESET 7810 #
520 B Paper tray error An error occurs (i.e motor error, or sensor error, etc) for any paper tray. • A defective motor • A defective sensor • Too much load on the drive mechanism 541 A Fusing thermistor open The fusing temperature detected by the thermistor was below 0 °C for 5 seconds. The fusing temperature does not rise +15 °C (center) or +12 °C (at the ends) five times within 2 minutes after the fusing lamps have been turned on. • Fusing thermistor defective or out of position • Fusing lamp open • Fusing thermostat open • Power supply board defective • Poor connection of the fusing unit 542 A Fusing temperature warm-up error FUSER CHASSIS...
The fusing temperature does not reach the standby temperature within 20 seconds after the main switch is turned on. • Fusing thermistor defective or out of position • Fusing lamp open • Fusing thermostat open • Power supply board defective • Poor connection of the fusing unit 543 A Fusing overheat error 1 A fusing temperature of over 231°C is detected for 5 second by the fusing thermistor. • Fusing thermistor defective • Power supply board defective • SBCU board defective
544 A Fusing overheat error 2 A fusing temperature of over 251°C is detected by the fusing temperature monitor circuit in the SBCU board. • Fusing thermistor defective • Power supply board defective • SBCU board defective
546 A Unstable fusing temperature The fusing temperature varies 50°C or more within 1 second twice continuously. • Thermistor defective • Poor connection of the fusing unit • Power supply unit defective
547 B Zero cross signal malfunction Zero cross signals are not detected within a certain period. • Power supply board defective
2012-07-17
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