Xerox Phaser 6128MFP - Page 378

5-32 Phaser 6128MFP Service Manual
Print-Quality Troubleshooting
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 8-86).
Replace the
MCU Board
(page 8-57).
7 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 8.
8 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).
Go to step 9.
9 Reseat all IP Board connectors.
Is the image printed correctly?
Complete Go to step 10.
10 Reseat and lock the Toner
Cartridges.
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.
13 Reseat all MCU Board connectors.
Is the image printed correctly?
Complete Go to step 14.
14 Reseat all IP Board connectors.
Is the image printed correctly?
Complete Go to step 15.
15 Open and close the Front Cover to
reseat the Transfer Belt.
Is the image printed correctly?
Complete Go to step 16.
16 Replace the Imaging Unit
(page 8-8).
Is the image printed correctly?
Complete Go to step 17.
17 Replace the IP Board (page 8-41).
Is the image printed correctly?
Complete Replace the
MCU Board
(page 8-57).
Troubleshooting Procedure Table (continued)
Step Actions and Questions Yes No