3-94 Phaser 6180 Color Laser Printer Service Manual
Error Messages and Codes
Optional 550-Sheet Feeder Error
The Optional 550-Sheet Feeder has failed.
Applicable Chain Link
■ Chain Link 072-215: 550 Feeder Error
Initial Actions
■ Cycle printer power.
■ If the problem persists, follow the procedure below.
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack Map References
■ MCU Board, PL9.1.20
■ Feeder Unit Harness, PL12.2.3
■ Right Side Harness, PL10.1.15
■ Tray 3 Feeder Board, PL12.2.6
■ Optional 550-Sheet Feeder, PL12.1.1
■ “Map 2 - Laser Unit” on page 10-11
■ “Map 4 - LVPS and MCU Board” on 
page 10-13
■ “Map 6 - Optional 550-Sheet Feeder” on 
page 10-15
■ “Optional 550-Sheet Feeder Wiring 
Diagram” on page 10-50
Troubleshooting Procedure Table 
Step Actions and Questions Yes No
1 Check the Optional 550-Sheet Feeder 
for correct installation. Is the Optional 
550-Sheet Feeder correctly installed?
Go to step 3. Reseat the 
Optional 550-
Sheet Feeder. 
Go to step 2.
2 Does the error still occur? Go to step 3. Complete.
3 Check the wiring harness connectors 
P/J27, P/J273, and P/J419 between 
the MCU Board and the Tray 3 Feeder 
Board. Are the connectors securely 
connected?
Go to step 5. Reconnect the 
connectors. Go 
to step 4.
4 Does the error still occur? Go to step 5. Complete.
5 Check the Feeder Unit Harness for 
continuity.
1. Disconnect P/J419 and P/J273.
2. Check continuity between P/J419 
<=> P/J273.
Go to step 6. Replace the 
Feeder Unit 
Harness.