Duplex/Manual Feed Sensor (S1) Service Check - Lexmark X548 Series Service Manual

Duplex/manual feed sensor (S1) service check

Note: Before performing this service check, ensure that the printer is on a hard level surface.
Step Questions / actions
Enter the Diagnostics Menu.
1
1. Turn off the printer.
2. Press and hold 3 and 6.
3. Turn on the printer.
4. Release the buttons when the progress bar
appears.
Perform the Base Sensor Test. See
SENSOR TEST" on page
1. Navigate to BASE SENSOR TEST >
Input - S1.
2. Install Tray 1.
Does the display indicate
Input - S1: Media Clear?
Pull Tray 1 out.
2
Does the display indicate
Input - S1: Media Present?
Remove the tray, and inspect sensor.
3
Is there something obstructing the sensor?
Inspect the spring-loaded shaft/flag in the tray.
4
The flag portion of the shaft intercepts the
sensor, except when a sheet is being staged
for duplexing.
Does the shaft rotate freely and return to
home position (flag at top of rotation)?
5 Is the flag on the shaft broken?
Is the cable correctly connected to JFUSES1
6
on the RIP board and to the sensor.
Is the sensor cable properly connected?
Turn the printer off, and remove the rear
7
shield. See
"Rear shield removal" on
4-7. Turn the printer on, and check the
page
values at JFUSES1:
Pin
8
9
Are the values approximately correct?
"BASE
3-20.
JFUSES1
Value
Ground
+3.3 V dc
Yes
Go to step 2.
The sensor is functioning
correctly.
Remove the obstruction and
restart the test.
Go to step 5.
Replace the tray.
Go to step 7.
Replace the duplex sensor.
See
"Duplex sensor
removal" on page 4-29.
7525-63x
No
Go to step 4.
Go to step 3.
Go to step 4.
Replace the tray with a new
one.
Go to step 6.
Reconnect the cable.
If the problem persists, go to
step 7.
Replace the RIP board. See
"RIP board removal" on
page 4-19.
Diagnostic information
2-35
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