2-62 Service Manual
4025-XXX
Black Prints
The entire image area is black. There is no image visible on the page.
THE PRINTER DISPLAYS NO ERROR CODE.
4 IMAGE TRANSFER INSPECTION
Carefully remove the Test Print generated in step 3.
Inspect the print.
Was the toner image on the drum transferred completely
to the paper?
Suspect an
intermittent
problem and
go to step 7
Go to step 5
5 BTR REPLACEMENT
Replace the “BTR Assembly” on page 4-61.
Is the image still blank?
Go to step 6 Problem
solved
6 HVPS REPLACEMENT
Replace the “High Voltage Power Supply (HVPS)
Assembly” on page 4-88.
Is the image still blank?
Go to step 7 Problem
solved
7 The following printer FRUs and areas are associated with this
specific problem. One or more of these FRUs or areas may
have failed partially or completely. If you cannot isolate this
problem using the steps in this Service Check, replace each
FRU or troubleshoot each area listed below, one at a time, until
you isolate and solve the problem.
• CRU Connector and Contract Springs
• MCU PWB - Go to “Engine Board (MCU PWB)” on
page 4-92.
• I/O PWB - Go to “I/O PWB” on page 4-89
• Refer to the wiring diagrams and check for a broken wire or
loose connection between FRUs in the Xerographic sections of
the printer
Step Actions and Questions Yes No
1 PRINTHEAD WINDOW INSPECTION
Remove the EP Cartridge.
Inspect the Printhead Window for a sheet of paper that may
have lodged in front of it and could be blocking the laser beam
from reaching the Drum.
Is the Printhead Window free of paper?
Go to step 2 Remove the
paper
Step Actions and Questions Yes No
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