Ricoh D041 MPC2550 DI-C1
Troubleshooting. Electrical Component Defects 2
• The CN numbers in the following table are the connector numbers on the BCU.
Sensors
| No. | Sensor Name/ Sensor Board Name | Active | CN | Condition | Symptom |
|---|---|---|---|---|---|
| S14 | By-pass Paper Length Sensor | L | CN221/15 | Open | Paper size error |
| Shorted | |||||
| S16 | By-pass HP Sensor | H | CN221/21 | Open/ Shorted |
SC508 |
| S7 | Fusing Entrance Sensor | L | CN214/14 | Open | Jam B (Jam18) |
| Shorted | Jam C (Jam58) | ||||
| S17 | Duplex Entrance Sensor | L | CN221/24 | Open | Jam Z (Jam27) |
| Shorted | Jam Z (Jam67) | ||||
| S18 | Duplex Exit Sensor | L | CN221/27 | Open | Jam Z (Jam25) |
| Shorted | Jam Z (Jam65) | ||||
| S34 | TD Sensor - K | A | CN212/B9, B11 |
Open/ Shorted |
SC372 |
| S32 | TD Sensor - M | A | CN212/A9, A11 |
Open/ Shorted |
SC373 |
| S33 | TD Sensor - C | A | CN212/B3, B5 |
Open/ Shorted |
SC374 |
| S31 | TD Sensor - Y | A | CN212/A3, A5 |
Open/ Shorted |
SC375 |
| S26 | Fusing Exit Sensor | L | CN227/18 | Open | Jam C (Jam19) |
| Shorted | Jam C (Jam59) | ||||
| S30 | PCDU Toner Collection Bottle Full Sensor |
H | CN211/9 | Open | Used toner near full indicated when it is not near full. |
| Shorted | Used toner near full cannot be detected when the waste toner bottle is nearly full. |
||||
SW5 |
PCDU Toner Collection |
L |
CN211/7 |
Open |
Toner collection bottle is not |
Shorted |
Toner collection bottle is |
||||
S29 |
ITB Toner Collection |
H |
CN211/4 |
Open |
Used toner near full |
Shorted |
Used toner near full cannot |
||||
SW7 |
Tray 2 Paper Size Switch |
L |
CN211/16, 17, 18, 20 |
Open/ |
Paper size error |
Shorted |
Tray 2 is detected when the tray 2 is not set. |
||||
S37 |
Temperature/ |
A |
CN222/15, |
Open/ |
Printed image has some problems such as rough image, dirty background, weak image or poor fusing. |
S28 |
Thermopile |
A |
CN237/14 |
Open/ |
SC541 |
TH1 |
Heating Roller Thermistor |
A |
CN233/4 |
Open/ |
SC551 |
TH2 |
Pressure Roller |
A |
CN233/11 |
Open/ |
SC561 |
TH3 |
Pressure Roller |
A |
CN233/9 |
Open/ |
SC571 |
S27 |
Paper Exit Sensor |
L |
CN227/21 |
Open |
Jam C (Jam20) |
Shorted |
Jam C (Jam60) |