Panasonic 8415 Maintenance Manual

							Settings and Printing
MaintenanceSpecifications31
nExecuting the Test Print
It enables you to print each color (Cyan, Magenta, Yellow and Black) halftone page to check the print
quality. 
1Press the MENU/EXITbutton on the printer panel.
2Press the H/ENTERbutton.
3Press the F F
/CONTINUEbutton twice.
The Test Print menu will appear.
4Press the H/ENTERbutton to print each color page.
nPrinting the test pattern for Adjustment to Media setting
When using media types other than those recommended, you may need to confirm the print quality by
printing the test pattern below. To print the test pattern, see “Setting the Adjustment to Media” in the
Settings and Printing.
Test pattern:
Troubleshooting
Troubleshooting 
						

							Settings and Printing
MaintenanceSpecifications32
nPrinter Components
You may need to replace the following components if they have expired. For product numbers of
supplies, refer to the supplement for supplies provided.
Troubleshooting
Charge unit
Toner cartridges
Color imaging unit
Fuser unitOil supply roll
Fuser unit
Cleaning pad
Transfer unit 
						

							Settings and Printing
MaintenanceSpecifications33
READY indicator is blinking.
The toner is almost depleted.Read the printer panel
message to determine the
printer status.
Corrective ActionTrouble
ERROR indicator is blinking.Wait for the job to be
completed or cancel the job. The printer is receiving,
processing or printing job.Possible Cause
Exit the Menu mode by
pressing the MENU/EXIT
button.
Correct the condition displayed
on the printer panel (e.g., close
the door or clear the media
jam). Turn the printer off and back
on again. If the indicator is still
on, the printer requires service.  You have entered the Menu
mode in the printer panel.
The printer is not ready, is
disabled, or has detected an
error.
The printer has stopped
because it detected a user-
correctable error such as an
open door or a media jam. Error occurred that is not user-
correctable. READY indicator is off.
ERROR indicator is on.
Replace the color toner
cartridge. On the Test Print, a single
color is not uniform or many
vertical streaks (both light and
dark) of slightly different
density and non-uniform color.
Troubleshooting
Store media in the original,
dust-free package in the same
environmental conditions as
the printer. Paper doesn’t match the
environmental conditions, or it
has too much moisture.Try fresh paper, or another
type of paper. On the Test Print, half tone
area has areas of weak color.
B 
						

							Settings and Printing
MaintenanceSpecifications34
Corrective ActionTroublePossible Cause
The toner cartridge is almost
depleted and is not properly
applying toner.Replace the color toner
cartridge. The toner is almost depleted.
On the Test Print, a single
color has a sharp, dark or light
vertical streak.Replace the color toner
cartridge soon (depending on
the complexity of your prints,
you can continue to print up to
100 more pages). The color density is set
incorrectly in the printer
panel. A single color appears faded.
Check the density setting by
printing the Calibration Test
Print in the Bias Adjustment
menu from the printer panel.
Compare the settings with the
color density samples on the
Color Calibration Card and, if
necessary, adjust the density
from the printer panel. Refer to
“Adjusting the Color Density” in
Settings and Printing.
Troubleshooting
Small white spots appear on
OHP transparency.Remove dust or stain from
OHP transparency. OHP transparency has dust
on its surface. 
						

							Settings and Printing
MaintenanceSpecifications35
Corrective ActionTroublePossible Cause
Run 20-30 prints. The
impression will disappear
with continued time and use. On the Test Print, a single
color shows a light, repeating
horizontal line.The roller in the toner cartridge
has a slight impression after a
long period of storage.
The photosensitive belt inside
the color imaging unit is
scratched.Replace the color imaging unit. The color imaging unit has
reached the end of its useful
life.
On the Test Print, straight,
thin light vertical line in colors.Prints are missing fine-line
detail.Replace the color imaging unit.
The color imaging unit has
reached the end of its useful life.
Dark color spots and dark or
light streaks appear in all
colors.Replace the color imaging unit.
Troubleshooting
Replace the color imaging unit.
The color imaging unit’s
internal waste toner box is
full. On the Test Print, each color
“bleeds” into the color band. 
						

							Settings and Printing
MaintenanceSpecifications36
Corrective ActionTroublePossible Cause
Fingerprint(s) on the
underside belt or
photosensitive belt (inside) of
the color imaging unit.Print several pages until the
spots fade. Replace the color imaging unit.
The color imaging unit is
damaged. On the Test Print, a single
white spot appears in
approximately the same
vertical place on the page.
On the Test Print, large light
spot(s) appear randomly.
Troubleshooting
The fuser unit is damaged.Replace the fuser unit. The color imaging unit is
scratched.Replace the color imaging unit;
make sure that the old imaging
unit is not exposed to light for
more than 45 seconds.
If a new color imaging unit
does not correct the problem:
BPut the old color imaging
unit back into the printer.
BRepack the new color
imaging unit. On the Test Print, one or more
dark vertical lines appear on
the print in all colors. 
						

							Settings and Printing
MaintenanceSpecifications37
Corrective ActionTroublePossible Cause
Replace the fuser unit
(depending on your quality
needs, you can continue to
print until the dark vertical lines
appear).Print 5-10 pages of blank
pages to clean the roller.
If you still see the problem:
BReplace the oil supply roll.
If you still see the problem:
BReplace the fuser unit.
Replace the oil supply roll. The fuser unit is near the end
of its useful life.
The oil supply roll has
reached the end of its useful
life. The surface of the printed
image appears to have vertical
scratches (visible by holding
the print at an angle and
observing the “shine” of the
image).
At first, the scratches appear
only on the printed image;
eventually, dark vertical
scratches appear on the
unprinted portion of the page.
Media frequently wraps around
the fuser unit.A piece of the printed image is
missing and reappears out of
place, approximately 129 mm
(5²) down the page.The fuser unit’s internal roller
is not being consistently oiled.
or
The fuser unit’s internal roller
is contaminated with toner
particles.
Troubleshooting
Replace the charge unit.
The charge unit is dirty. Light vertical streaks appear
in all colors. 
						

							Settings and Printing
MaintenanceSpecifications38
Corrective ActionTroublePossible Cause
Reinsert the color imaging unit
to correct the contact for the
charge unit. The entire page prints in black,
including the borders.Bad electrical contact for the
charge unit.
The charge unit is broken.
The transfer unit is worn out.
Replace the transfer unit. Toner spots appear on the
back of the media.
Dark and wavy vertical
streaks appear in all colors.Remove and reinsert the
charge unit.
Replace the charge unit. The charge unit is dirty.
Remove and reinsert the
charge unit.
Replace the charge unit.
Troubleshooting
The page prints in black in the
image area only. (The borders
are clear.)Either the image processor
board or engine control board
is not functioning properly.Turn the printer off and back
on again. If the problem
persists, call for service on
your printer. 
						

							Settings and Printing 
Maintenance  Specifications39
Corrective ActionTroublePossible Cause
Solid color print for green, red
T
roubleshooting
Use the Recommended media
*
Service Error is displayed on
* 
						

							Settings and Printing
MaintenanceSpecifications40
Troubleshooting
nEntire image samples
*
1*2
NOTE
BThese image samples may differ depending on the media or circumstances (temperature and
humidity) using the printer.
Image Quality (at Solid Image Pattern)
Normal Image SamplePoor Image Sample
Image Quality (at Halftone Image Pattern)
Normal Image SamplePoor Image Sample
Green
Blue
Red
Black
Magenta
Cyan