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Phaser 6121MFP Service Manual
5-9
Print-Quality Troubleshooting
2
Reseat all connectors and
cables on the Image
Processor Board and on
the Engine Control Board.
Perform a copy job.
Does the defect still
occur?
Replace the Scanner
Unit (page 8-31). If
the problem persists,
go to step 3.
Complete.
3
Check connectors P/J18
and P/J19 on the Engine
Control Board, and P/J8
on the Image Processor
Board.
Are they seated properly?
Go to step 4.
Reseat the
connectors. If the
problem persists, go
to step 4.
4
Replace the Image
Processor Board
(page 8-66).
Does the defect still
occur?
Go to step 5.
Complete.
5
Reseat CN6 on the Power
Supply and P/J9 on the
Image Processor Board.
Does the error still occur
when copying?
Replace the Power
Supply (page 8-72).
Complete.
6
Inspect the Imaging Unit.
Is the gear of the
Imaging Unit drive
mechanism installed
properly?
Go to step 7.
Correct the drive
transmitting section
or replace the
Imaging Unit. If the
problem persists, go
to step 7.
7
Is the charge corona
voltage contact or photo-
conductor ground contact
of the Imaging Unit
connected properly?
Go to step 8.
Check, clean, or
correct the contact. If
the problem persists,
go to step 8.
8
Check that all connectors
and cables are securely
connected to the High
Voltage Board.
Are the connectors seated
properly?
Go to step 9.
Reseat the
connectors. If the
problem persists, go
to step 9.
9
Replace the following
units, listed in order, until
problem is eliminated:
Imaging Unit (page 8-6),
High Voltage Board
(page 8-57),
Engine Control Board
(page 8-59), and
Laser Unit (page 8-50).
Complete.
Troubleshooting Procedure Table (continued)
Step Actions and Questions
Yes
No
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: ......