Phaser 6125/6130 Color Laser Printer Service Manual 5-49
Print-Quality Troubleshooting
3 Print the Windows test page after
printing the Demo page (Menu >
Information Pages > Demo Page, or
running Service Mode > Test Print >
Toner Pallet Check).
Is the image printed correctly?
Complete Go to step 4.
4 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 7. Go to step 5.
5 Check the connections between the
MCU Board and Erase LED Assy.
Are P/J141 and P/J14 connected
correctly?
Go to step 6. Reconnect the
connector(s)
securely, then
go to step 6.
6 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).
7 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 8.
8 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 9.
9 Reseat the connectors on the IP
Board.
Is the image printed correctly?
Complete Go to step 10.
10 Reseat the Toner Cartridges (Y/M/C/
K), and check that their lock keys are
in the lock positions.
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 13. Reconnect the
connectors
securely, then
go to step 12.
12 Is the image printed correctly? Complete Go to step 13.
Troubleshooting Procedure Table (continued)
Step Actions and Questions Yes No