5-30
Phaser 6128MFP Service Manual
Print-Quality Troubleshooting
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 8-86).
Replace the
MCU Board
(page 8-57).
6
Check the Imaging Unit high-
voltage connections.
Are the contacts on the Imaging
Unit, and springs damaged or dirty?
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
Check the Transfer Belt high-voltage
connections..
Are the contacts on the Transfer Belt
and springs damaged or dirty?
Clean or
replace the
Transfer Belt
contacts or
spring(s).
Go to step 9.
9
Reseat all MCU Board connectors.
Is the image printed correctly?
Complete
Go to step 10.
10
Reseat all IP Board connectors.
Is the image printed correctly?
Complete
Go to step 11.
11
Open and close the Front Cover to
reseat the Transfer Belt.
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 8-11).
Is the image printed correctly?
Complete
Go to step 14.
14
Replace the MCU Board (page 8-57).
Is the image printed correctly?
Complete
Replace the IP
Board
(page 8-41).
Troubleshooting Procedure Table (continued)
Step
Actions and Questions
Yes
No
Summary of Contents for Phaser 6128 MFP
Page 1: ...Phaser 6128MFP Multi Function Printer Phaser 6128MFP Service Manual ...
Page 2: ......
Page 14: ...xii Phaser 6128MFP Service Manual Contents ...
Page 24: ...xxii Phaser 6128MFP Service Manual ...
Page 54: ...1 30 Phaser 6128MFP Service Manual General Information ...
Page 120: ...2 66 Phaser 6128MFP Service Manual Theory of Operation ...
Page 270: ...3 150 Phaser 6128MFP Service Manual Error Messages and Codes ...
Page 408: ...5 62 Phaser 6128MFP Service Manual Print Quality Troubleshooting ...
Page 420: ...6 12 Phaser 6128MFP Service Manual Adjustments and Calibrations ...
Page 424: ...7 4 Phaser 6128MFP Service Manual Cleaning and Maintenance ...
Page 604: ...I 6 Phaser 6128MFP Service Manual ...
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