Dell 2330dn service manual Operator panel service check, Paper feed service checks

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	Action
Operator panel (LCD)	Lights
Controller board	If the LCD does not come on, then open the controller board cage and locate the operator
Warning: Do not
	panel connector at J3. Make sure the cable is properly connected to the controller board
replace the operator	and the controller board has input voltage to it.
panel and controller	With the printer on, verify the following without disconnecting the cable:
board at the same
time. Each card	• Pins 1, 3, 5, and 6: 3.3 v
contains the printer	• Pin 2: 5 v
settings. When either
	• Pins 4 and 7: GND
of these cards is new,
it obtains the settings	If these are approximately correct and the operator panel is not functioning, then replace
from the other card.	the operator panel.
Settings are lost when	If any are incorrect, then see “Controller board service check” on page 2-22.
both are new and
replaced at the same
	Buttons
time.
	If the buttons do not respond, then replace the operator panel. There is no test or repair for
	the faulty switches on the operator panel.

Paper feed service checks

Paper jam error indication during POST

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, then 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	Make sure the input paper feed sensors are working properly. A stuck or incorrectly installed
Manual feed sensor	sensor causes a paper jam indication.
Media picks but stops halfway through the printer

FRU	Action
Input/duplex sensors	Make sure the input sensors are working properly.
(under print cartridge assembly)	Check for a broken or stuck flag on the input sensors. Clear anything that keeps
Input sensor (manual)
	the flags from rotating freely.
	Make sure the cables are seated on the controller board at J27 (input/duplex
	sensor) and J23 (manual input).
	Check for +5 V dc on pin 2 and 5 at J27 (input/duplex sensors) and pin 2 at J23
	(Input sensor). Voltages on pins 1 and 4 at J27 pin 1 at &23 should change as the
	flags intersect with the sensor.
	•	If correct, then replace the input paper feed sensor.
	•	If these voltages are not correct, then replace the controller board.
	•	Check the pick tires. Clean or replace as necessary.

Diagnostics information 2-27