Kyocera TASKalfa 9003i
Troubleshooting. Malfunction 2
(4)The controller fan motor does not rotate
(Final phenomenon: Malfunction such as the abnormal image output due to heated CPU)
| Step | Check description | Assumed cause | Measures |
|---|---|---|---|
| 1 | Cleaning the controller fan motor | The fan is dirty with dust. | Clean the controller fan motor. |
| 2 | Checking the wire | The connector is not properly connected. | Clean the terminal of the following wire connectors and reinsert the connectors. Replace the wire when it has no continuity. • Controller fan motor - Main PWB |
| 3 | Replacing the controller fan motor | The motor is faulty. | Replace the controller fan motor. |
| 4 | Replacing the main PWB | The main PWB is faulty. | Replace the main PWB. |
(5)The developer fan motor does not rotate
(Final phenomenon: The printing operation of the main unit is frequently interrupted to cool the machine inside according to the inner temperature increase during the continuous printing.)
| Step | Check description | Assumed cause | Measures |
|---|---|---|---|
| 1 | Cleaning the developer fan motor | Foreign materials such as dust adhere on the developer fan motor | Clean the developer fan motor. |
| 2 | Checking the wire | The connectors are not properly connected or the wire is faulty. | Clean the terminal of the following wire connectors and reinsert the connectors. Replace the wire when it has no continuity. • Developer fan motor - Front PWB • Front PWB - Engine PWB |
| 3 | Replacing the developer fan motor | The developer fan motor is faulty. | Replace the developer fan motor. |
| 4 | Replacing the front PWB | The front PWB is faulty. | Replace the front PWB. |
| 5 | Replacing the engine PWB | The engine PWB is faulty. | Replace the engine PWB. |
(6)The main unit malfunctions even if turning on the power switch
| Step | Check description | Assumed cause | Measures |
|---|---|---|---|
| 1 | Measuring the input voltage | The power cord has no continuity. | Plug the power cord into another wall outlet. |
| 2 | Checking the power cord | The power plug of the power cord is faulty. | If the power plug is deformed or faulty, replace the power cord. |
| 3 | Checking the power cord | The power cord is faulty. | Check the continuity in the power cord, and replace the power cord if there is no continuity. |
| 4 | Checking the main power switch | The main power switch is faulty. | Check the continuity between the contacts of the main power switch, and replace the main power switch if there is no continuity. |
| 5 | Checking the LVU | The LVU is faulty. | Reconnect the connectors on the LVU. If the wires are pinched or have any damage, fix or replace the wires. Then, replace the LVU if the issue is not resolved. |
| 6 | Replacing the power switch | The power switch is faulty. | Check the power switch. Replace it if there is no continuity. |
| 7 | Checking the engine PWB | The engine PWB is faulty. | Reconnect the connectors on the engine PWB. Then, fix or replace the wires if they are pinched by the other part or if they have any damage. When the issue is not resolved after that, replace the engine PWB. |
(7)Toner falls over the paper conveying section
(Final phenomenon: Toner adheres on the paper leading edge)
| Step | Check description | Assumed cause | Measures |
|---|---|---|---|
| 1 | Checking the developer and drum units | The developer unit or the drum unit is dirty. | Clean the developer unit and the drum unit. |
| 2 | Checking the toner collection box and the duct | The toner is clogged in the toner collection box or the duct. | Clean inside of the toner collection box and the duct. |
| 3 | Checking the toner collection fan motor 1/2 | The fan or filter of the toner collection fan motor 1/2 are dirty. | Clean the fan and the filter of the toner collection fan motor 1/2. And, replace the filter if necessary. |
| 4 | Executing Developer refresh | The toner is deteriorated. | Execute the developer refresh twice. |
| 5 | Developer unit replacement | The toner is deteriorated. | Replace the developer unit. |