5-38 Phaser 6125/6130 Color Laser Printer Service Manual
Print-Quality Troubleshooting
2 1.Open the Front Cover.
2.Inspect the four Transfer Unit HV
connections.
Are the four terminals on the Transfer
Unit, and the four springs on the frame
(PL4.1.11, 12, 13 and 14) dirty and/or
deformed?
Clean or replace
the Transfer Unit
contacts or
spring(s).
Go to step 3.
3 Inspect the paper path.
Is there toner contamination on the
paper path?
Clean the paper
path (refer to
“Cleaning” on
page 7-2).
Go to step 4.
4 1.Remove the Imaging Unit.
2.Inspect the five Imaging Unit HV
connections.
Are the five HV terminals on the
Imaging Unit, and five springs on the
frame (PL4.1.10 and PL4.1.15 to 18)
dirty and/or deformed?
Clean and/or
replace the
Imaging Unit or
spring(s).
Go to step 5.
5 Reseat the Imaging Unit.
Is the image printed correctly?
Complete Go to step 6.
6 Reseat the Fuser.
Warning: Start the operation after the
Fuser has cooled down.
Is the image printed correctly?
Complete Go to step 7.
7 Inspect the Toner Cartridges
Are any of the Toner Cartridges
damaged?
Replace any
damaged Toner
Cartridges
(page 8-10)
Go to step 8.
8 Reseat the connectors on the MCU
Board.
Is the image printed correctly?
Complete Go to step 9.
9 Reseat the connectors on the IP
Board.
Is the image printed correctly?
Complete Go to step 10.
10 Open and close the Front Cover to
reseat the Transfer Unit.
Is the image printed correctly?
Complete Go to step 11.
11 Check the connections between the
Laser Unit and MCU Board.
Are P/J40, P/J 41, P/J411 and P/J 412
connected correctly?
Go to step 14. Reconnect the
connectors
securely, then
go to step 12.
12 Is the image printed correctly? Complete Go to step 13.
13 Replace the Imaging Unit (page 8-8).
Is the image printed correctly?
Complete Go to step 14.
Troubleshooting Procedure Table (continued)
Step Actions and Questions Yes No