Canon NP6085 Service Manual

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Canon NP6085 Service Manual Manual pdf 309 page image

COPYRIGHT © 1996 CANON INC. CANON NP6085 REV.0 JULY 1996 PRINTED IN JAPAN (IMPRIME AU JAPON)The microprocessor on the NP6085’s controller PCB is equipped with a function to check the conditionof the machine (sensors in particular), issuing an error code to the control panel for display upon detec-tion of an error.A. Copier3. OPERATIONS AND TIMING3-251XI. SELF DIAGNOSISCause•.Thermistor (TH1; poor contact oropen circuit)• Fixing heater (H1; open circuit)• Thermal switch (TS1; open circuit)• SSR (fault)• DC controller PCB (fault)• Thermistor (TH1; short circuit)• SSR (fault)• DC controller PCB (fault)•.Thermistor (TH1; poor contact oropen circuit)•.Fixing heater (H1; open circuit)•.Thermal switch (TS1; open circuit)• SSR (fault)• DC controller PCB (fault)•.Thermistor (TH1; poor contact oropen circuit)• Fixing heater (H1; open circuit)• Thermal switch (TS1; open circuit)• SSR (fault)• DC controller PCB• Cleaning belt (fixing assembly; takenup)• Cleaning belt sensor (Q8, Q9; fault)• DC controller PCB (fault)Description•.After power-on, the upper fixing rollerdoes not reach 100°C within 5 min.• The temperature of the upper fixing rol-ler exceeds 230°C for 5 sec or more.• After the temperature of the upper fixingroller has exceeded 100°C, it does notreach 180°C within 5 min.• After the temperature of the upper fixingroller has reached 180°C, it drops to100°C or less for 5 sec or more.• After power-on, the temperature of theupper fixing roller does not reach 56°Cwithin 2 min.• The length used of the cleaning belt insi-de the fixing assembly has exceeded aspecific value.*1*1*1*1E000E001E002E003E004Code