Lexmark E350d Service Manual - Page 43

Operator panel service check, Paper feed service checks, Paper jam error indication during POST

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4512-420, -430 Operator panel service check Inspect the operator panel cable for damage. Make sure the cable is plugged in securely. Run POST and check each light for proper operation. See "Power-On Self Test (POST) sequence" on page 2-1. LCD Operator panel service check FRU Operator panel (LCD) Controller card Warning: Do not replace the operator panel and controller card at the same time. Each card contains the printer settings. When either of these cards is new, it obtains the settings from the other card. Settings are lost when both are new and replaced at the same time. Action Lights If the LCD does not come on, open the controller card cage and locate the operator panel connector at J3. Make sure the cable is properly connected to the controller card and the controller card has input voltage to it. With the printer on, verify the following without disconnecting the cable: • Pins 1, 3, 5, and 6-3.3 v • Pin 2-5 v • Pins 4 and 7-GND If these are correct and the operator panel is not functioning, replace the operator panel. If any are incorrect, see "Controller card service check" on page 3-17. Buttons If the buttons do not respond, replace the operator panel. There is no test or repair for the faulty switches. Paper feed service checks Paper jam error indication during POST FRU Fuser (exit sensor) Input/duplex sensor Manual feed sensor Action If the exit sensor flag, which is visible at the back of the fuser, is in any position other than vertical, the printer will display a paper jam. Make sure the flag is operating freely. Replace the fuser if the sensor is damaged. Make sure the input paper feed sensors are working properly. A stuck or incorrectly installed sensor causes a paper jam indication. Media picks during POST and/or continuously FRU ACM Manual feed clutch Action Check the ACM clutch for wear. The solenoid interacts with the clutch to control the motion of the pick tires. If the ratchet teeth of the ACM clutch assembly are worn or broken, the solenoid may not stop the ACM from rotating. Replace the ACM clutch assembly if necessary. Check the manual feed clutch for damage. Diagnostics information 2-21

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Diagnostics information
2-21
4512-420, -430
Operator panel service check
Inspect the operator panel cable for damage. Make sure the cable is plugged in securely. Run POST and check
each light for proper operation. See
“Power–On Self Test (POST) sequence” on page 2-1
.
Paper feed service checks
Paper jam error indication during POST
Media picks during POST and/or continuously
LCD Operator panel service check
FRU
Action
Operator panel (LCD)
Controller card
Warning:
Do not
replace the operator
panel and controller
card at the same time.
Each card contains the
printer settings. When
either of these cards is
new, it obtains the
settings from the other
card. Settings are lost
when both are new
and replaced at the
same time.
Lights
If the LCD does not come on, open the controller card cage and locate the operator panel
connector at J3. Make sure the cable is properly connected to the controller card and the
controller card has input voltage to it.
With the printer on, verify the following without disconnecting the cable:
•
Pins 1, 3, 5, and 6—3.3 v
•
Pin 2—5 v
•
Pins 4 and 7—GND
If these are correct and the operator panel is not functioning, replace the operator panel.
If any are incorrect, see
“Controller card service check” on page 3-17
.
Buttons
If the buttons do not respond, replace the operator panel. There is no test or repair for the
faulty switches.
FRU
Action
Fuser (exit sensor)
If the exit sensor flag, which is visible at the back of the fuser, is in any position other than
vertical, the printer will display a paper jam. Make sure the flag is operating freely. Replace
the fuser if the sensor is damaged.
Input/duplex sensor
Manual feed sensor
Make sure the input paper feed sensors are working properly. A stuck or incorrectly installed
sensor causes a paper jam indication.
FRU
Action
ACM
Manual feed clutch
Check the ACM clutch for wear. The solenoid interacts with the clutch to control the motion
of the pick tires.
If the ratchet teeth of the ACM clutch assembly are worn or broken, the solenoid may not
stop the ACM from rotating. Replace the ACM clutch assembly if necessary.
Check the manual feed clutch for damage.