Lexmark X543 - Input Sensor (S2) Service Check

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Diagnostic information 2-43

7525-xxx

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Input sensor (S2) service check

The Input sensor (S2) is part of the autocompensator FRU and is not available otherwise.

Replace the fuser. See “Fuser assembly

removal” on page 4-28.

Does the error clear?

Problem resolved. Replace the controller

board. See “Controller

board removal” on

page 4-18.

Step Questions / actions Yes No

1 Enter Diagnostics Menu (turn the printer off,

press and hold and , turn the printer on,

and then release the buttons when the

installed memory and processor speed

displays).

Perform the Base Sensor Test. See “Base

Sensor Test” on page 3-18.

1. Select Base Sensor Test, and press

Select ().

2. Select S2, and press Select ().

3. Pull tray 1 out, and rotate the S2 sensor

flag (S2 is located in front of the center

autocompensator mechanism housing.) It

should rotate freely and return to its original

position.

Is the input (S2) sensor flag damaged?

Replace the

autocompensator

mechanism. See

“Autocompensator

mechanism (ACM)—

standard tray removal” on

page 4-12.

Go to step 2.

Watch the display while rotating the flag.

Does the display indicate Media Clear and

Media Present?

Problem resolved. Go to step 3.

Turn the printer off, and remove the rear

shield. See “Rear shield removal” on

page 4-7.

Is the JSP1 cable connector properly

connected to the controller board?

Go to step 4. Reseat the connector.

Turn the printer on, and check the voltage at

JSP1 pin 15.

Is the voltage approximately +5 V dc?