54
Phaser 740 and 750 Color Printers
Printing and print quality problems
The following flow chart represent an effective, systematic means of troubleshooting
print quality. Following the chart are examples of print quality defects and probable
solutions.
Required tools
■
#1 Phillips screwdriver
■
Conductive grease
■
Volt-ohm-meter (VOM)
■
Ruler
Troubleshooting print quality problems
Is the
entire image too
light or too dark?
Perform the
Calibrate for
Paper
adjustment
Perform the
Calibrate
Colors
procedure
Move the
printer to an
operating
environment
that is within
specifications
Help establish
customer
expectations
or escalate
Swap that
supply item
Is the
environment outside
the printer's
specifications?
Based on
TEKSMART, is the
print quality problem
a documented printer
limitation or unsup-
portable customer
expectation?
Print the
Supplies
Page
Does the
imaging unit or the
fuser have less than
20% life
remaining?
Print quality is
acceptable.
Stop
Replace that
color's toner
cartridge
Try a
supported
media
Run the
Clean
for Smudges
procedure
Use the
following
troubleshooting
images to
determine
which supply
item to replace
Does the
front panel display
a message to
replace a supply
item?
Replace the
indicated
supply item
Print the
Diagnostic
Test Pages
(DTP)
Is the print
quality problem
on only one solid
color page?
Is the
customer using
a media type that
is NOT on the
supported
list?
Is the printed
image offsetting
or are the prints
smudged?
Is the
print quality
problem repeated
more than once
on each
page?
Start
No
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Summary of Contents for Phaser 740
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Page 129: ...Service Guide 117 Figure 3 Motor and fan FRUs 3102 37 1 10 9 5 8 7 2 6 4 3 ...
Page 131: ...Service Guide 119 Figure 4 Sensor switch and flag FRUs 3102 40 1 7 2 3 4 8 5 6 ...
Page 135: ...Service Guide 123 Figure 6 Imaging and paper feed component FRUs 3102 39 1 2 3 7 9 4 6 8 5 ...