Pc Cartridge Set Failure; Printer Front Door Open - Lexmark W850n Service Manual

4024-110

PC cartridge set failure

Step
1 Check the PC cartridge installation.
Is the PC cartridge properly installed?
2 Check the PC cartridge sensor connection.
Is the PC cartridge sensor properly connected?
3 Check the switch (PC cartridge interlock) for operation.
1. Enter Diagnostics mode.
2. Select BASE SENSOR TEST.
3. Select Devices.
4. Select PC unit present.
Open the printer left door assembly and the front door
assembly, and check them.
Does the display on the operator panel change every time
the PC cartridge is removed and replaced?
4 Check the switch (PC cartridge interlock) connection.
Is the switch (PC cartridge interlock) properly connected?
5 Perform a print test.
Does the error continue?

Printer front door open

Step
1 Check the opening and closing of the printer front door
assembly.
Is the printer front door assembly opening and closing
normally?
2 Check the switch (printer front door interlock) for operation.
1. Enter Diagnostics mode.
2. Select BASE SENSOR TESTS.
3. Select Cover and Door.
4. Select Door J printer front.
Open the printer front door assembly, and check it.
Does the display on the operator panel change every time
the switch actuator is operated?
2-70
Printer Service Manual
Check
Check
Yes
Go to step 2. Install the PC
cartridge properly.
Replace the PC Replace the
cartridge connection.
connector.
Go to step 5. Go to step 4.
Replace the switch Replace the
(PC cartridge connection.
interlock).
Replace the Problem solved.
printer engine card
assembly.
Go to "Printer
engine card
assembly
removal" on
page 4-119.
Yes
Go to step 2. Check the printer
front door
assembly for
rotation, and
reinstall it.
Go to step 4. Go to step 3.
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