Ricoh MPC3000
Troubleshooting. Electrical Component Defects 2
Sensors
Note: The CN numbers in the following table are the connector numbers on the BICU.
| No. | Sensor Name/ Sensor Board Name | Active | CN | Condition | Symptom |
|---|---|---|---|---|---|
| SW03 | Waste Toner Bottle Set Switch |
L | CN251/A4 | 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 set. | ||||
| S33 | Tray 2 Paper Size Switch | L | CN251/B8, B9, B10, B12 |
Open/ Shorted |
Paper size error |
| S34 | Temperature/ Humidity Sensor |
A | CN286/1,3 | Open/ Shorted |
SC498 Printed image has some problems such as rough image, dirty background, weak image or poor fusing. |
| S35 | Thermopile | A | C N2 86/8 | Open/ Shorted |
SC541 |
| TH1 | Thermistor - Heating Roller |
A | CN257/9, 11 |
Open/ Shorted |
SC551 |
| TH2 | Thermistor - Pressure Roller |
A | CN257/30 | Open/ Shorted |
SC561 |
| S36 | Paper Exit Sensor | L | CN218/12 | Open | Jam C (Jam 20) |
| Shorted | Jam C (Jam 1) | ||||
| S37 | Paper Overflow Sensor | L | CN218/15 | Open | Paper overflow displayed when the paper overflow condition still remains. |
| Shorted | Paper overflow message is displayed when the paper overflow condition does not remain. | ||||
| S38 | Original Width Sensor 1 |
A | CN313/2 | Open/ Shorted |
Original paper size cannot be detected. |
| S39 | Original Width Sensor 2 |
A | CN313/5 | Open/ Shorted |
Original paper size cannot be detected. |
| S40 | Original Length Sensor 1 |
A | CN313/8 | ||
| S41 | Original Length Sensor 2 |
A | CN313/11 | ||
| S42 | Original Length Sensor 3 |
A | CN313/14 | ||
| S43 | Scanner HP Sensor | H | CN318/2 | Open | SC120 |
| Shorted | SC121 | ||||
| S44 | Platen Cover Sensor | L | CN318/5 | Open/ Shorted |
Platen cover open cannot be detected. |
| (M6) | Paper Transfer Roller HP Sensor |
L | CN214/19 | Open/ Shorted |
SC452 |
| (M8) | Image Transfer Belt Contact Sensor |
L | CN215/2 | Open/ Shorted |
SC442 |
Blown Fuse Conditions
Power Supply Unit
| Fuse | Rating | Symptom when turning on the main switch | |
|---|---|---|---|
| 115V | 220V - 240V | ||
| FU1 | 5A/250V | 5A/250V | 5VE power to the SIO and IOB not supplied. |
| FU2 | 5A/250V | 5A/250V | No response. (5V power to the BICU and controller is not supplied.) |
| FU3 | 5A/250V | 5A/250V | 5V power to the IOB and finisher is not supplied. |
| FU4 | 10A/125V | 10A/125V | 24V power to the BICU finisher is not supplied. |
| FU5 | 10A/125V | 10A/125V | 24V power to the SIO and IOB not supplied. |
| FU6 | 10A/125V | 10A/125V | 24VS1 power to the IOB not supplied. |
| FU7 | 10A/125V | 10A/125V | 24VS2 power to the IOB not supplied. |
| FU501 | 2A/250V | 2A/250V | PSU fan does not turn on. |
| FU101 | 15A/125V | 8A/250V | No response. |
| FU102 | 15A/125V | 6.3A/250V | Fusing heater does not turn on. |
| FU103 | 2 A/2 50V | 2 A/2 50V | Tray heater does not turn on. |