• Code: E197-0004
• Description: Serial communication error. Ex serial communication error with the DC Controller PCB.
• Remedy: 1. Check connection of the DC Controller PCB (J1210). 2. Replace the DC Controller PCB.

• Code: E197-0006
• Description: Serial communication error. Ex serial communication error with the DC Controller PCB.
• Remedy: 1. Check connection of the DC Controller PCB (J1210). 2. Replace the DC Controller PCB.

• Code: E197-0007
• Description: Serial communication error. Ex serial communication error with the Buffer Path Unit.
• Remedy: 1. Check the connection between the Buffer Driver PCB and the DC Controller PCB (J1226). 2. Replace the DC Controller PCB. 3. Replace the Buffer Driver PCB.

• Code: E197-0008
• Description: Serial communication error. Ex serial communication error with the Multi Deck.
• Remedy: 1. Check the connection between the Buffer Driver PCB and the DC Controller PCB (J1226). 2. Replace the DC Controller PCB. 3. Replace the Buffer Driver PCB.

• Code: E197-0009
• Description: Serial communication error. Ex serial communication error with the Multi Deck.
• Remedy: 1. Check the connection between the Buffer Driver PCB and the DC Controller PCB (J1226). 2. Replace the DC Controller PCB. 3. Replace the Buffer Driver PCB.

• Code: E197-000a
• Description: Serial communication error. Ex serial communication error with the Multi Deck.
• Remedy: 1. Check the connection between the Buffer Driver PCB and the DC Controller PCB (J1226). 2. Replace the DC Controller PCB. 3. Replace the Buffer Driver PCB.

• Code: E197-0020
• Description: Serial communication error. HOB serial communication (= register serial communication) error with the DC Controller PCB.
• Remedy: 1. Check connection of the DC Controller PCB (J1210). 2. Replace the DC Controller PCB.

• Code: E197-0021
• Description: Serial communication error. HOB serial communication error in the Drum ITB Driver PCB.
• Remedy: 1. Check the connection between the Drum ITB Driver PCB (J1901) and the DC Controller PCB (J1226). 2. Replace the DC Controller PCB. 3. Replace the Drum ITB Driver PCB.