Ricoh MPC4503SP

• Code: 543-00
• Description: Fusing central thermopile high temperature detection (software) Above (T3) degrees C detected for (t4) seconds continuously. Detection period 100ms, detection count: 10 times or more.
• Causes: • Triac short-circuit • IOB board defective • BCU board defective
• Remedy: • Replace the IOB board • Replace the BCU board • Replace the fusing unit

• Code: 549-01
• Description: Shield Operation Error Detection During HP detection operation, shield sensors 1 and 2 detect "High" for (t30) seconds continuously.
• Causes: • Motor defective • Sensor defective • Sensor actuator/feeler modification/defective • Shield modification/defective
• Remedy: • Replace the motor • Replace the HP sensor • Replace the fusing unit

• Code: 549-02
• Description: Shield Operation Error Detection During shield basic operation, shield sensor 2 does not go "Low > High" even if (t31) seconds elapsed from screen motor rotation start.
• Causes: • Motor defective • Sensor defective • Sensor actuator/feeler modification/defective • Shield modification/defective
• Remedy: • Replace the motor • Replace the HP sensor • Replace the fusing unit

• Code: 549-03
• Description: Shield Operation Error Detection During shield basic operation, shield motor does not stop even if (t32) seconds elapsed from rotation start.
• Causes: • Motor defective • Sensor defective • Sensor actuator/feeler modification/defective • Shield modification/defective
• Remedy: • Replace the motor • Replace the HP sensor • Replace the fusing unit

• Code: 549-04
• Description: Shield Operation Error Detection During HP detection operation, HP detection fails 3 times consecutively.
• Causes: • Motor defective • Sensor defective • Sensor actuator/feeler modification/defective • Shield modification/defective
• Remedy: • Replace the motor • Replace the HP sensor • Replace the fusing unit

• Code: SC101-01
• Description: Lamp Error (Scanning) The white level peak did not reach the prescribed threshold when the white plate was scanned.
• Causes: • LED defective • IDB (LED driver) defective • SBU defective • IPU defective • Power/signal harness defective • Condensation in scanner unit • Mirrors or lenses dirty or positioned incorrectly • White plate dirty or installed incorrectly
• Remedy: 1. Turn the power off/on. 2. Perform the following operations: • Reconnect the power/signal harness. • Reattach/clean the mirrors/lenses. • Reattach/clean the white plate. 3. Replace the following parts: • Replace the LED board. • Replace the IDB board or SIO board. • Replace the SBU board. • Replace the IPU board. • Replace the power/signal harness.