Lexmark Optra S 1620 Manual

Diagnostic Information2-84
4059-XXX
Remove Paper - Output Bin X is displayed, POST Incomplete,
Unable to clear the message.
271 Paper Jam - Check Bin X. POST Incomplete
271 Paper Jam - Check Bin X, POST Complete, First Sheet of paper
feeds into Output Bin X.
Note:Before performing the following checks run the Output Bin X
Sensor Test and check for the failing sensor.
Sensor Test: NF = Near Full (Upper part of sensor assembly)
F = Full (Lower Part of sensor assembly)
P = Pass Thru Sensor
FRU Action
1 Dual...

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990 Service - BIN X
FRU Action
1D.C.Motor
Mechanical Linkage
Assembly (Level 2)Check the DC motor cable
connector to be sure it is correctly
installed at J4 on the output
expander option board. Go to
“Output Expander Control Board -
Level 2 DC Motor” on page 5-24.
If correct, disconnect J4 from the
option board and check the
resistance of the motor on the
cable connector: J4-1 to J4-2:
measures between 115 and 135
ohms. Also check J4-1 and J4-2 to
the motor case for...

Diagnostic Information2-86
4059-XXX
No indication that Bin X is Full OR No indication that Bin X is Near
Full
Note:The NF or Near Full sensor will only be displayed on models
that support an Output Expander that has a Dual Sensor installed.
Paper Feed Service Check
If you have a 936 Transport Motor Error go to the“Main Drive
Service Check” on page 2-73.
FRU Action
1 Dual Output Bin X Sensor
Assembly
Control BoardCheck for correct installation of
the sensor cable at J5 on the
control board. If either the...

2-874059 Service Manual
4059-XXX
Autocompensator fails to feed paper. Failures occur randomly
throughout the stack of paper.
Paper feed failures occur only near the top of the stack of paper.
The most common cause of this problem is paper curl. Remove the
paper from tray x and check for the natural curvature in the paper.
Reinstall the paper in the correct manner. If the problem persists, it
may be necessary to reduce the stack height. Replace both pick
rolls if the paper appears to be flat in the tray...

Diagnostic Information2-88
4059-XXX
Double Feeding Paper
Note:If double feeding paper occurs mostly from the bottom of the
stack, check for missing or damaged restraint pads in the tray.
Multipurpose Tray
Paper fails to feed from the multipurpose tray.
The pick roll should make one complete revolution and stop with the
flat side down. If the pick roll turns but does not pick paper, check the
roll for signs of wear, oil or grease on the surface of the pick roll or
slick spots. If you find a problem,...

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Parallel Port Service Check
Run the“Parallel Wrap Test” on page 3-11.
Note:The Parallel Wrap Test is designed to check the parallel port
hardware by using a wrap plug (P/N 1319128) and invoking the
Parallel Diagnostic Test. This test helps isolate the printer from the
parallel cable and host. The test provides failure information on the
display for approximately 3 seconds. If the test indicates that a
problem is detected, replace the controller board.
Printhead Service...

Diagnostic Information2-90
4059-XXX
2 Error Code 934
Mirror Motor Lost Lock
Error Code 935
Mirror Motor unable to
reach operating speedThese error codes indicate a
problem with the mirror motor circuit
in the printhead assembly or the
mirror motor cable to the engine
board cable or engine board
assembly. Check the continuity of
the mirror motor cable connected to
J3 on the engine board. If incorrect,
replace the cable. The voltage at
J3-7 measures approximately
+24 V dc. If incorrect, replace the
engine...

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Print Quality Service Check
Service Tip: Before troubleshooting any print quality problems do the
following:
•Install another print cartridge if available before proceeding with
the service checks.
•Use Tray 1 to test for print quality of the base printer.
Select the following menu settings as indicated. Be sure and note
the original settings so you can return the printer to the original
customer printer setup.
•Print Resolution: Set to 300 dpi (print quality problems...

Diagnostic Information2-92
4059-XXX
Print Quality - All Black Page
Service Tip: An all black page is generally caused by a problem in
the high voltage system or an incorrect high voltage in the printing
process resulting in toner development on the entire photoconductor
drum.
Print Quality - Blank Page
FRU Action
1 High Voltage Contacts Check the high voltage contacts on
the right side frame to ensure they fit
securely and are not pitted,
contaminated or damaged. If
incorrect, replace the contact with...

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2 High Voltage Contact Check the PC drum contact on the
right side frame for damage, PC
drum contact wear or contamination.
If the contact is bent or damaged,
replace the contact.
Note:Inspect the HVPS PC drum
contact on the board for any signs of
damage or contamination.
3 HVPS Check the fuse on the HVPS. If
open, replace the HVPS. Check the
voltages at J10 on the engine board.
Measure the following voltages from
connector J10 to printer ground:
Printer Idle
J10-5...