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3-80
Phaser 6121MFP Service Manual
Error Messages and Codes
0502 Thermistor Failure, 0510 Fuser Failure, and 0520 Fuser Failure
0502 Thermistor Failure
The temperature detected by the thermistor does not
reach an expected level after the warm-up cycle starts.
0510 Fuser Failure
The temperature detected by the thermistor remains lower
than expected for a given period of time or longer.
0520 Fuser Failure
The temperature detected by the thermistor remains higher
than expected for a given period of time or longer.
Initial Actions
Power down and reboot the printer.
Procedure
Troubleshooting Reference Table
Applicable Parts
Wiring and Plug/Jack References
■
Fuser, PL4.0.13
■
Engine Control Board, PL13.0.20
■
Power Supply, PL13.0.17
■
Board Locations (page 2-10)
■
Map 1 - Engine Control Board
Plug/Jack Locator (page 10-5)
■
Power Supply Wiring (page 10-17)
Troubleshooting Procedure Table
Step Action and Questions
Yes
No
1
Check that the Fuser is installed
correctly.
Does the problem persist?
Go to step 2.
Complete.
2
Check the Engine Control Board
connectors P/J2, P/J3, and P/J6.
Are the connectors seated properly?
Go to step 3
Reseat the
connectors. If
the problem
persists, go to
step 3.
3
Check the Low Voltage Power Supply
connectors CN3, CN5, and CN7.
Are the connectors seated properly?
Go to step 4.
Reseat the
connectors. If
the problem
persists, go to
step 4.
4
Replace the Fuser (8-9).
Does the problem persist?
Go to step 5.
Complete.
5
Replace the Engine Control Board
(page 8-59).
Does the problem persist?
Go to step 6.
Complete.
6
Replace the Power Supply (page 8-72). Complete.
Summary of Contents for PHASER 6121MFP
Page 1: ...Phaser 6121MFP Multi Function Printer Phaser 6121MFP Service Manual...
Page 2: ......
Page 12: ...x Phaser 6121MFP Service Manual Contents...
Page 22: ...xx Phaser 6121MFP Service Manual...
Page 42: ...1 20 Phaser 6121MFP Service Manual General Information...
Page 106: ...2 64 Phaser 6121MFP Service Manual Theory of Operation...
Page 109: ...Phaser 6121MFP Service Manual 3 3 Error Messages and Codes s6121mfp 372...
Page 194: ...3 88 Phaser 6121MFP Service Manual Error Messages and Codes...
Page 306: ...6 44 Phaser 6121MFP Service Manual Adjustments and Calibrations...
Page 405: ...Phaser 6121MFP Service Manual 8 85 Service Parts Disassembly 3 Remove the spring s6121mfp 255...
Page 432: ...8 112 Phaser 6121MFP Service Manual Service Parts Disassembly...
Page 437: ...Phaser 6121MFP Service Manual 9 5 Parts List...
Page 477: ...Phaser 6121MFP Service Manual 9 45 Parts List...
Page 488: ...9 56 Phaser 6121MFP Service Manual Parts List...
Page 489: ...10 Chapter Wiring In this chapter Plug Jack Designations and Locator Diagrams Wiring Diagrams...
Page 530: ...1 6 Phaser 6121MFP Service Manual Index...
Page 531: ......