Roll paper is not recognized during paper feed. (Paper feeding does not start as paper is not detected.)
Suspected cause
PE Sensor (board) adjustment failure
PE Sensor (board) failure
Thickness Sensor adjustment failure
Thickness Sensor failure
PW Sensor adjustment failure
PW Sensor failure
Roll Paper Sensor failure
Parts/Components to be checked
UPE Sensor
Paper Thickness Sensor
CR Unit (including PW Sensor)
1st Roll Paper Detection Sensor
- 2nd Roll Paper Detection Sensor
Troubleshooting
| Step | Confirmation points and methods | Page | YES | NO |
|---|---|---|---|---|
| 1 | Perform rear AD adjustment Does the product recover from the failure? | End | Go to step 2 | |
| 2 | Replace the UPE Sensor (board) Does the product recover from the failure? | UPE Sensor | End | Go to step 3 |
| 3 | Replace Paper Thickness Sensor Does the product recover from the failure? | Paper Thickness Sensor | End | Go to step 4 |
| 4 | Replace CR Unit (including PW Sensor) Does the product recover from the failure? | CR Unit | End | Go to step 5 |
| 5 | Replace Roll Paper Detection Sensor (side of roll paper that does not start paper feed) Does the product recover from the failure? | 1st Paper Feed Driven Release Sensor/1st Paper Path Paper Detection Sensor 2nd Paper Feed Driven Release Sensor/2nd Paper Path Paper Detection Sensor | End | Escalate to person in charge |