Description: Shading correction (white level) trouble DETAIL 1) Abnormal white level output during shading correction 2) The white level output is not recognized properly during shading correction.
Remedy: The scanner (reading) optical system does not transmit images (light) normally. 1) Scanner (reading) optical system dirt 2) Scanner (reading) optical parts installing position shift REMEDY (Check) 1) Scanner (reading) optical system dirt 2) Scanner (reading) optical parts installing position (CCD unit, lens, mirror, copy lamp, copy lamp light quantity sensor, shading correction sheet) (Remedy) 1) Scanner (reading) optical system cleaning 2) Scanner (reading) optical parts installing position adjustment (CCD unit, lens, mirror, copy lamp, copy lamp light quantity sensor shading correction sheet) (After work) 1) Copy density adjustment. TROUBLE POSITION CAUSE Shading correction white level output recognition error 1) CCD unit trouble 2) MCU PWB image signal (CCD) input circuit trouble REMEDY (Check) 1) CCD unit output 2) MCU PWB image signal input circuit (Remedy) 1) CCD unit replacement 2) MCU PWB replacement (After work) 1) When the MCU PWB is replaced, perform simulations to input various set values and adjustment values. TROUBLE POSITION CAUSE Copy lamp light quantity abnormality 1) Copy lamp trouble 2) Copy lamp control PWB trouble 3) Copy lamp light quantity adjustment trouble REMEDY (Check) 1) Copy lamp 2) Copy lamp control PWB 3) Copy lamp light quantity level (Remedy) 1) Copy lamp replacement 2) Copy lamp control PWB replacement 3) Copy lamp light quantity level adjustment (After work) 1) Copy density adjustment.
Code: E7-05
Description: Shading correction (dark component) trouble DETAIL 1) Dark component level output is abnormal during shading correction. 2) Dark component level output is not recognized normally during shading correction.
Remedy: TROUBLE POSITION CAUSE Scanner (reading) optical system does not transmit images (light) normally. 1) Scanner (reading) optical parts installing position shift REMEDY (Check) 1) Scanner (reading) optical parts installing position (CCD unit, lens, mirror, copy lamp, copy lamp light quantity sensor, shading correction sheet) (Remedy) 1) Scanner (reading) optical parts installing position adjustment (CCD unit, lens, mirror, copy lamp, copy lamp light quantity sensor, shading correction sheet) (After work) 1) Copy density adjustment. TROUBLE POSITION CAUSE Dark component output level recognition error during shading correction 1) CCD unit trouble 2) MCU PWB image signal (CCD) input circuit trouble REMEDY (Check) 1) CCD unit output 2) MCU PWB image signal (CCD) input circuit (Remedy) 1) CCD unit replacement 2) MCU PWB replacement (After work) 1) When the MCU PWB is replaced, perform simulations to input various set values and adjustment values. 2) When the CCD unit is replaced, adjust. TROUBLE POSITION CAUSE Copy lamp light quantity abnormality 1) Copy lamp trouble 2) Copy lamp control PWB rouble 3) Copy lamp light quantity adjustment trouble REMEDY (Check) 1) Copy lamp 2) Copy lamp control PWB 3) Copy lamp light quantity level (Remedy) 1) Copy lamp replacement 2) Copy lamp control PWB replacement 3) Copy lamp light quantity level adjustment (After work) 1) Copy density adjustment.
Remedy: ASIC internal register operation trouble ASIC (MCU PWB) trouble REMEDY (Check) (Remedy) MCU PWB replacement (After work) 1) When the MCU PWB is replaced, perform simulations to input various set values and adjustment values.
Code: E7-15
Description: Shading correction (white level) trouble DETAIL 1) White level output abnormality during shading correction 2) White level output recognition error during shading correction
Remedy: Scanner (reading) optical system does not transmit images (light) normally. 1) Scanner (reading) optical system dirt 2) Scanner (reading) optical parts installing position shift REMEDY (Check) 1) Scanner (reading) optical system dirt 2) Scanner (reading) optical parts installing position (CCD unit, lens, mirror, copy lamp, copy lamp light quantity sensor, shading correction sheet) (Remedy) 1) Scanner (reading) optical system cleaning 2) Scanner (reading) optical parts installing position adjustment (CCD unit, lens, mirror, copy lamp, copy lamp light quantity sensor, shading correction sheet) After work 1) Copy density adjustment. TROUBLE POSITION CAUSE White level output recognition error during shading correction 1) CCD unit trouble 2) MCU PWB image signal (CCD) input circuit trouble REMEDY (Check) 1) CCD unit output 2) MCU PWB image signal (CCD) input circuit (Remedy) 1) CCD unit replacement 2) MCU PWB replacement (After work) 1) When the MCU PWB is replaced, perform simulations to input various set values and adjustment values. TROUBLE POSITION CAUSE Copy lamp light quantity abnormality 1) Copy lamp trouble 2) Copy lamp control PWB trouble 3) Copy lamp light quantity adjustment trouble REMEDY (Check) 1) Copy lamp 2) Copy lamp control PWB 3) Copy lamp light quantity level (Remedy) 1) Copy lamp replacement 2) Copy lamp control PWB replacement 3) Copy lamp light quantity level adjustment (After work) 1) Copy density adjustment.
Code: H2-00
Description: Fusing temperature sensor (thermistor) trouble DETAIL 1) Fusing temperature sensor (thermistor) output level abnormality 2) Fusing temperature sensor (thermistor) output level recognition error.
Remedy: Fusing temperature sensor (thermistor) signal recognition error 1) Fusing temperature sensor (thermistor) trouble 2) MCU PWB fusing temperature sensor (thermistor) input circuit trouble REMEDY (Check) 1) Fusing temperature sensor (thermistor) 2) MCU PWB fusing temperature sensor (thermistor) input circuit (Remedy) 1) Fusing temperature sensor (thermistor) replacement 2) MCU PWB replacement 3) Reset the trouble with SIM 14. (After work) 1) When the MCU PWB is replaced, perform simulations to input various set values and adjustment values.