Sc144-00 - Ricoh MP 305 Plus Field Service Manual

6. Troubleshooting
• The white plate is not set properly, or is dirty.
• The scanner motor is malfunctioning.
Troubleshooting Procedures
Turn OFF then ON the main power.
If the SC occurs again, check the following. After each step, Turn OFF then ON the main power,
and see if the SC recurs.
1. Check the connector between the CIS and the BiCU.
• Not loose or disconnected: Proceed to the next step.
• Loose or disconnected: Reconnect the connector.
If the SC recurs after power OFF and ON, proceed to the next step.
2. Execute an output check for the LEDs (SP5-804-202).
• Not defective: Proceed to the next step.
• Defective: Replace the LEDB and execute SP5-804-202 again. If the LED lights up,
proceed to the next step. If not, replace the.CIS. If the SC recurs after power OFF then
ON, proceed to the next step.
3. Check the BiCU. If it is defective, replace it.
If the SC recurs after power OFF and ON, proceed to the next step.
4. Replace the laser unit.
If the SC recurs after power OFF and ON, proceed to the next step.
5. Check the harness. If it is defective, replace the harness.
If the SC recurs after power OFF and ON, proceed to the next step.
6. Check the white plate (exposure glass). If it is dirty or defective, replace it. Turn OFF
then ON the main power to see if the SC recurs.

SC144-00

Error Name
Scanner Communication Error
Type
D
Symptoms
• Connection detection error
• Cannot communicate with scanning-related devices (AFE, FPGA, ASIC). Or there are
communication errors.
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