Canon 3260 manual VI. Malfunction Status Troubleshooting

CHAPTER 4

VI. MALFUNCTION STATUS TROUBLESHOOTING

If the factor of the malfunction is identified as “malfunction status troubleshooting” by the mal- function diagnosis flowchart (Figure 4-1-1), execute the followings and mend the malfunction.

VI-1. "10.1 ERROR FUSER CALL FOR SERVICE" Fixing unit failure (abnormal low temperature) "10.2 ERROR FUSER CALL FOR SERVICE" Fixing unit failure (abnormal Warm-up)

<Possible causes>

1.The rated voltage of the fixing unit installed in the printer differs from the line voltage. Action: Replace the fixing unit.

2.The thermistor is dirty.

Action: If the thermistor contact area of the upper fixing roller is dirty, clean it.

3.The thermistor is not installed correctly.

Action: If the thermistor is not evenly contacting the upper fixing roller, re-install the ther- mistor correctly.

4.The thermistor wire is broken.

Action: Turn the power OFF and remove the fixing unit. Measure the resistance between

the fixing unit connector J50B-5 (FSRTH) and J50B-4 (GNDTH). If the resistance is not between about 190kΩ and 290kΩ (room temperature of 25°C), check the

wiring from connector J222 on the DC controller PCB to the thermistor. If it is nor- mal, replace the thermistor.

5.The main heater wire is broken.

Action: Remove the fixing unit. If there is no continuity between the fixing unit connector J50-3 (FSRN1: the upper right terminal of the left connector) and J51-5 (FSRN2: the upper right terminal of the right connector), replace the main heater.

6.The sub heater wire is broken.

Action: Remove the fixing unit. If there is no continuity between the fixing unit connector J50-4 (FSRL1: the lower right terminal of the left connector) and J51-6 (FSRL2: the lower right terminal of the right connector), replace the sub heater.

7.The thermoswitch is open.

Action: Remove the fixing unit and wiring cover. If there is no continuity between ther- moswitch terminals, replace the thermoswitch.

8.The fixing unit drive circuit is defective. Action: Replace the power supply unit.

9.The DC controller PCB is defective. Action: Replace the DC controller PCB.

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