• Code: E197-1000
• Description: Serial communication error. Communication error between the DC Controller PCB (UN2) and the Primary Charging High Voltage PCB (UN37, 38)
• Remedy: 1. Check the connection between the DC Controller PCB (UN2) and the Primary Charging High Voltage PCB (UN37, 38). 2. Replace the Primary Charging High Voltage PCB (UN37, 38). 3. Replace the DC Controller PCB (UN2).

• Code: E197-1001
• Description: Serial communication error. Communication error between the DC Controller PCB (UN2) and the Developing High Voltage PCB
• Remedy: 1. Check the connection between the DC Controller PCB (UN2) and the Developing High Voltage PCB. 2. Replace the Developing High Voltage PCB. 3. Replace the DC Controller PCB (UN2).

• Code: E197-1002
• Description: Serial communication error. Communication error between the DC Controller PCB (UN2) and the High Voltage PCBs
• Remedy: 1. Check the connection between the DC Controller PCB (UN2) and the Primary Charging High Voltage PCB (UN37, 38). 2. Check the connection between the DC Controller PCB (UN2) and the Developing High Voltage PCB. 3. Replace the Primary Charging High Voltage PCB. 4. Replace the Developing High Voltage PCB. 5. Replace the DC Controller PCB (UN2).

• Code: E197-2000
• Description: Serial communication error. Communication error between the DC Controller PCB (UN2) and the Fixing Feed Driver PCB (UN5)
• Remedy: 1. Check the connection between the DC Controller PCB (UN2) and the Fixing Feed Driver PCB (UN5). 2. Replace the Fixing Feed Driver PCB (UN5). 3. Replace the DC Controller PCB (UN2).

• Code: E197-2001
• Description: Serial communication error. Communication error between the DC Controller PCB (UN2) and the Pickup Driver PCB (UN4)
• Remedy: 1. Check the connection between the DC Controller PCB (UN2) and the Pickup Driver PCB (UN4). 2. Replace the Pickup Driver PCB (UN4). 3. Replace the DC Controller PCB (UN2).

• Code: E197-2002
• Description: Serial communication error. Communication error between the DC Controller PCB (UN2) and the Drum Driver PCB (UN6)
• Remedy: 1. Check the connection between the DC Controller PCB (UN2) and the Drum Driver PCB (UN6). 2. Replace the Drum Driver PCB (UN6). 3. Replace the DC Controller PCB (UN2).

• Code: E197-2003
• Description: Serial communication error. Communication error between the DC Controller PCB (UN2) and the Relay PCB (UN7)
• Remedy: 1. Check the connection between the DC Controller PCB (UN2) and the Relay PCB (UN7). 2. Replace the Relay PCB (UN7). 3. Replace the DC Controller PCB (UN2).

• Code: E197-2004
• Description: Serial communication error. Communication error between the DC Controller PCB (UN2) and the Buffer Driver PCB (UN150)
• Remedy: 1. Check the connection between the DC Controller PCB (UN2) and the Buffer Driver PCB (UN150). 2. Replace the Buffer Driver PCB (UN150). 3. Replace the DC Controller PCB (UN2).