Ricoh D144 MPC5502A AP-C3
Troubleshooting. Electrical Component Defects 2
Sensors
Note:
• The CN numbers in the following table are the connector numbers on the IOB.
| No. | Sensor Name/ Sensor Board Name |
Active | CN | Condition | Symptom |
|---|---|---|---|---|---|
| S41 | TD Sensor - M | A | CN227/B7 | Open/ Shorted |
SC360-03 |
| S42 | TD Sensor - Y | A | CN227/ B15 |
Open/ Shorted |
SC360-04 |
| S4 | Fusing Exit Sensor | L | CN204/12 | Open | Jam C (Jam 19) |
| Shorted | Jam C (Jam 1) | ||||
| S13 | Waste Toner Sensor | H | CN224/A5 | Open | Waste toner near full indicated when it is not near full. |
| Shorted | Waste toner near full cannot be detected when the waste toner bottle is nearly full. |
||||
| SW3 | Waste Toner Bottle Set Switch |
L | CN224/A7 | Open | Waste toner bottle is not detected when the waste toner bottle is set. |
| Shorted | Waste toner bottle is detected when the waste toner bottle is not set. |
||||
| SW5 | Tray 2 Paper Size Switch |
L | CN224/ A11, A12, A13, A15 |
Open/ Shorted |
Paper size error |
| S35 | Temperature/ Humidity Sensor |
A | CN234/ 6, 8 |
Open/ Shorted |
SC498 Printed image has some problems such as rough image, dirty background, weak image or poor fusing. |
| S36 | Thermopile Center, Edge |
A | CN212/3, 6 | Open/ Shorted |
SC541, SC551 |
| TH1 | Thermistor • Pressure Roller Center, Edge |
A | CN212/21,1 9 |
Open/ Shorted |
SC561, SC571 |
| S3 | Paper Exit Sensor | L | CN204/9 | Open | Jam C (Jam 20) |
| Shorted | Jam C (Jam 1) | ||||
| S2 | Junction Paper Jam Sensor |
L | CN204/6 | Open/ Shorted |
Jam C (Jam 24/64) |
| - | NC Sensor Center, Edge |
A | CN212/14,9 | Open/ Shorted |
SC581, SC591 |
| S5 | Paper Overflow Sensor | L | CN204/15 | Open | Paper overflow message is not displayed when the paper overflow condition still remains. |
| Shorted | Paper overflow message is displayed when the paper overflow condition does not remain. |
||||
| S46 | Original Length Sensor 1 |
A | CN313/8 SIO |
Open/ Shorted |
Original paper size cannot be detected. |
| Original Length Sensor 2 |
A | CN313/5 SIO |
Open/ Shorted |
Original paper size cannot be detected. | |
| S47 | Original Length Sensor 3 |
A | CN313/2 SIO |
Open/ Shorted |
Original paper size cannot be detected. |
| S43 | Scanner HP Sensor | H | CN318/2 | Open | SC120 |
| SIO | Shorted | SC121 | |||
| S44 | Platen Cover Sensor | L | CN318/5 SIO |
Open/ Shorted |
Platen cover open cannot be detected. |
| S37 | Heating Roller Rotation Sensor | H/L | CN210/2 | Open/ Shorted |
SC584 |
| S38 | Pressure Roller HP Sensor |
L | CN210/5 | Open/ Shorted |
SC569 |
| S2 | Junction Paper Jam Sensor |
L | CN204/6 | Open/ Shorted |
Jam C (Jam 24/64) |