Error Messages and Codes 3-65
Duplicate IP Address Detected
Another device on the network is using the IP address assigned to this printer.
Unsupported Configuration
More than one 550-Sheet Feeder is detected. Stacking more than one 550-Sheet 
Feeder is not supported and results in this error condition.
Initial Actions:
■ Ensure that only one 550 sheet feeder is installed.
■ Clean the CTD (ADC) Sensor, then cycle the printer's power.
■ If the problem persists follow the procedure below.
Applicable Status Code:
Code 164: Unsupported Configuration.
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack References
■ Image Processor Board, PL9.1.3
Troubleshooting Procedure Table 
Step Actions and Questions Yes No
1
Check the TCP/IP Address stored in the 
printer’s NVRAM.
Is the address correct for the printer?
Advise the 
customer of the 
address conflict.
Enter the correct 
IP address.
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack References
■ 550-Sheet Feeder w/ tray, PL11.1.1 ■ 550-Sheet Feeder P/J Locator (page 10-12)
■ 550-Sheet Feeder Drive Wiring (page 10-34)
Troubleshooting Procedure Table 
Step Actions and Questions Yes No
1
Check the configuration of the Printer.
Is more than one 550-Sheet Feeder 
installed?
Remove one of 
the 550-Sheet 
Feeders.
Go to Step 2.