Phaser 6130 Color Laser Printer Service Manual 5-47
Print-Quality Troubleshooting
3 1.Open the Front Cover, and remove 
the Imaging Unit.
2.Defeat the safety interlock switch.
Do the four erase LEDs light correctly?
Go to step 6. Go to step 4.
4 Inspect the connections between the 
MCU Board and Erase LED Assy.
Are P/J141 and P/J14 connected 
correctly?
Go to step 5. Reconnect the 
connectors 
securely, then 
go to step 5.
5 1.Disconnect J14 from the Erase LED 
Assy.
2.Measure the voltage across P14-15 
<=> ground on the MCU Board.
Does the voltage measure about +3.3 
VDC?
Replace the 
Erase LED Assy 
(page 8-37).
Replace the 
MCU Board 
(page 8-59).
6 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), then 
go to step 7.
Go to step 8.
7 Reseat the Imaging Unit.
Is the image printed correctly?
Complete Go to step 8.
8 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 9.
9 Reseat the connectors on the MCU 
Board.
Is the image printed correctly?
Complete Go to step 10.
10 Reseat the connectors on the IP 
Board.
Is the image printed correctly?
Complete Go to step 11.
11 Open and close the Front Cover to 
reseat the Transfer Unit.
Is the image printed correctly?
Complete Go to step 12.
12 Replace the Imaging Unit (page 8-8).
Is the image printed correctly?
Complete Go to step 13.
13 Replace the Fuser (page 8-9).
Warning:  Start the operation after the 
Fuser has cooled down.
Does the error still occur when 
printing?
Complete Go to step 14.
Troubleshooting Procedure Table (continued)
Step Actions and Questions Yes No