Phaser 6180MFP Multifunction Printer Service Manual 3-141
Error Messages and Codes
ADC Sensor Error (Error Code 02)
The ADC Sensor has detected density error. The following troubleshooting 
procedure applies to this error.
Applicable Chain Link
■ Chain Link 092-651: ADC Sensor Error (IOT ADC Sensor Error) (Error 
Code 02)
Initial Actions
■ Ensure the Transfer Unit and surrounding area is free of waste toner.
■ Cycle printer power.
■ If the problem persists, follow the procedure below.
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack Map References
■ Front Cover Harness, PL1.2.13
■ Transfer Unit, PL4.1.1
■ Laser Unit, PL5.1.12
■ Print Cartridge (C/M/Y/K),
PL5.1.17-20
■ MCU Board, PL9.2.13
■ Right Side Harness, PL10.1.12
■ “Map 1 - Electrical and Drive” on 
page 10-10
■ “Map 4 - LVPS and MCU Board” on 
page 10-13
■ “Xerographic” on page 10-34
Troubleshooting Procedure Table 
Step Actions and Questions Yes No
1 1.Check the Transfer Unit for correct 
installation.
2.Is the Transfer Unit correctly 
installed?
Go to step 3. Reseat the 
Transfer Unit 
(page 8-9).
Go to step 2.
2 Does the error still occur when the 
printer is turned On?
Go to step 3. Complete.
3 1.Check the Print Cartridges for 
correct installation.
2.Are the Print Cartridges correctly 
installed?
Go to step 5. Reseat the Print 
Cartridges 
(page 8-11).
Go to step 4.
4 Does the error still occur when the 
printer is turned On?
Go to step 5. Complete.