PW (Paper Width) Sensor Dirt error
Error code
- 90 PW Sensor Dirt error
Occurrence condition
- When paper width is detected on the PW Sensor, the aim and detected value differ.
Assumed cause
- Foreign objects or pieces of paper in the paper transport path
- Paper dust or dirt on the PW Sensor Glass or reflector
- The PW Sensor has a dirty surface, has fallen off, or is faulty
- The PW Unit has fallen off
- The reflector is faulty or has fallen off.
- Mechanical control board failure
Related parts
- PW SENSOR,UNIT
- Reflector, PW, DUP 1867867
- D1 Cover (Paper, TRAY, UNIT)
Troubleshooting
| Step | Confirmation and action | YES | NO |
|---|---|---|---|
| 1 | Check paper transport path Is there any foreign matter, paper chips, etc. in the paper transport path? |
Remove any foreign objects or pieces of paper |
Go to step 2 |
| 2 | Check the PW Sensor Glass and reflector Is there paper dust, foreign objects or pieces of paper on the PW Sensor Glass or reflector? |
Remove any foreign objects or pieces of paper and clean the glass and reflector.（PW Sensor Glass) | Go to step 3 |
| 3 | Check the PW Sensor for installation, dirt, and FFC connection Is the Paper Width Sensor installed properly? Is there dirt on the sensor? Is the connector not fully inserted? Is the relay connector not fully inserted? |
Clean the sensor surface, check the FFC routing, and connect it securely. | Go to step 4 |
| 4 | Check if the PW Unit has fallen off Is the PW Unit installed improperly? Is the relay connector on the Rear Frame not fully inserted? |
Handle one by one.
|
Replace sequentially
|