Lexmark E330 Service Manual - Page 89

Printhead service check, Paper feed service checks

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4505 Printhead service check FRU Printhead Action Unplug the printer. Disconnect the printhead cables from J11 and J12 on the controller card. Turn the printer on. On the controller card, verify +24 V dc on pin 5 at J11 and +5 V dc on pin 7 at J12. Verify grounds on pin 4 at J11 and on pins 2, 6, and 8 at J12. • If voltages or grounds are incorrect, check the controller card. See "Controller card service check" on page 2-49 for more information. • If voltages are correct, replace the printhead (comes with cables). Paper feed service checks Paper jam error indication during POST FRU Exit sensor Input sensor Input sensor #1 (under print cartridge assembly) and Input sensor #2 (manual) Action If the exit sensor flag is not resting within the paper exit sensor during POST, the printer displays a paper jam message. Make sure the flag is operating freely and is correctly installed. Make sure the input paper feed sensors are working properly. A stuck or incorrectly installed sensor causes this error. Diagnostic information 2-61

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Diagnostic information
2-61
4505
Printhead service check
Paper feed service checks
Paper jam error indication during POST
FRU
Action
Printhead
Unplug the printer.
Disconnect the printhead cables
from J11 and J12 on the controller
card.
Turn the printer on.
On the controller card, verify
+24 V dc on pin 5 at J11 and
+5 V dc on pin 7 at J12.
Verify grounds on pin 4 at J11 and
on pins 2, 6, and 8 at J12.
•
If voltages or grounds are
incorrect, check the controller
card. See
“Controller card
service check” on page 2-49
for
more information.
•
If voltages are correct, replace the
printhead (comes with cables).
FRU
Action
Exit sensor
If the exit sensor flag is not resting
within the paper exit sensor during
POST, the printer displays a paper
jam message. Make sure the flag is
operating freely and is correctly
installed.
Input sensor
Input sensor #1 (under print
cartridge assembly) and
Input sensor #2 (manual)
Make sure the input paper feed
sensors are working properly. A
stuck or incorrectly installed sensor
causes this error.