Diagnostic information 2-203
7500-432, -632, and -832
Image quality trouble
Troubleshooting
Note: First, get a printout as a base, and follow the symptom table to identify the possible failing FRU’s.
Image quality symptoms:
•
Faint print (low contrast)—“Faint print (Low contrast)” on page 2-204.
• Blank print (no print)—“Blank print (no print)” on page 2-206.
• Solid black—“Solid black” on page 2-208.
• Vertical blank lines (White stripes in media transport direction)—“Vertical blank lines (white stripes in
media transport direction)” on page 2-209.
• Horizontal band—“Horizontal bands” on page 2-211.
• Printhead out—“913.00 Printhead assembly failure” on page 2-153.
• Vertical stripes—“Vertical stripes” on page 2-213.
• Horizontal stripes—“Horizontal stripes” on page 2-215.
• Partial lack—“Partial lack” on page 2-217.
• Spots—“Spots” on page 2-218.
• Afterimage—“After image” on page 2-219.
• Background (fog)—“Background (fog)” on page 2-220.
• Skew—“Skew” on page 2-221.
• Media damage—“Media damage” on page 2-223.
• No fix—“No fuse” on page 2-224.
Note: When horizontal lines and/or spots occur periodically, it is possibly caused by a particular roll. In this
case, measure the interval on the print test, and check the relation to the roll in the printer. The interval does not
necessarily match circumference of the roll.
15 Perform a print test.
Does the error still occur?
Replace the printer
engine card
assembly.
Go to “Printer
engine card
assembly removal”
on page 4-119.
Problem solved.
Step Check Yes No
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