Ricoh DX3443

• Code: E-40
• Description: Thermal Head ID error The CPU detects an abnormal ID signal from the thermal head.
• Causes: Different thermal head MPU Thermal head connector disconnected

• Code: E-44
• Description: MSU error
• Causes: Replace the MPU

• Code: E-50
• Description: NVRAM data version disagreement Data for the uploading NVRAM is not expected data for the machine.
• Causes: Replace the MPU

• Code: E-51
• Description: Flash Rom error The data in the flash ROM is not complete.
• Causes: Replace the MPU

• Code: E-61
• Description: Auto Off Switch error The main switch does not turn off for more than 6.0 seconds.
• Causes: Auto off switch defective Auto off switch connector disconnected