Lexmark Optra S 1620 Manual

Diagnostic Information2-24
4059-XXX
Power-On Self Test (POST)
When you turn the printer On, it performs a Power-On Self Test.
Check for correct POST functioning of the base printer by observing
the following:
1. The LED comes on.
2. The operator panel displays one and a half row of pels, then
clears.
3. Diamonds scroll across the display, then clear.
4. “Performing Self Test” appears on the display.
– The 2000 sheet high capacity option elevator tray moves to
the uppermost position if installed.
– The...

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Symptom Tables
Symptom Table - Base Printer
Symptom Action
Auxiliary Fan (2420/2450/2455/
3455) fails to run or is noisy.Go to the“Auxiliary Fan Service
Check” on page 2-47.
Dead Machine Go to the“Dead Machine Service
Check” on page 2-32.
Operator Panel - One or more
buttons do not work.Go to the“Operator Panel Buttons
Service Check” on page 2-74.
Operator Panel - Display is blank.
Printer sounds 5 beeps.Go to the“Operator Panel Service
Check” on page 2-74.
Operator Panel...

Diagnostic Information2-26
4059-XXX
Symptom Table - High Capacity Feeder Option (2000 Sheet)
Print quality - Background Go to“Print Quality - Background”
on page 2-96.
Print quality - Residual image Go to“Print Quality - Residual
Image” on page 2-100.
Print quality - Skew Go to the“Paper Feed Service
Check” on page 2-86.
Print quality - Banding Go to“Print Quality - Banding” on
page 2-99.
Print quality - Random marks Go to“Print Quality - Random
Marks” on page 2-94.
Print quality - Toner on backside
of...

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Symptom Table: Paper Tray Options
Symptom Table - Duplex
Symptom Table - Envelope Feeder Option
Symptom Action
Paper feed problem with 250
Sheet Paper Tray Option.Go to the“Input Tray(s) Option
Service Check” on page 2-58.
Paper feed problem with 500
Sheet Paper Tray Option.Go to the“Input Tray(s) Option
Service Check” on page 2-58.
Paper feed problem with 500/500
sheet paper tray option.Go to the“Input Tray(s) Option
Service Check” on page 2-58.
Media fails to pass thru...

Diagnostic Information2-28
4059-XXX
Symptom Table - Output Expander
Service Checks
Note:Anytime the engine board is replaced, the Configuration ID
must be reset in NVRAM on the new engine board. Go to“Setting
Configuration ID” on page 3-20.
Review the following information before performing any service
checks.
•Paperfeed Problems (especially paper jams): Go to“Viewing
the Error Log” on page 3-8and check the printer error log for
indications of repetitive entries that help to isolate a problem to
a...

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Charge Roll Service Check
Service Tip: Close and evenly spaced repetitive marks 47.19 mm
(1.86 inch) apart or spots on the page can be caused by a damaged
or contaminated charge roll.
To remove the charge roll:
1. Wrap a piece of plain white paper around the charge roll to
prevent contamination or damage.
2. Carefully remove the roll by pressing outward and to the right on
the charge roll link arm and remove the charge roll from the
right side charge roll bearing.
3....

Diagnostic Information2-30
4059-XXX
3 Right Side Charge Roll Link Check the right side charge roll link
assembly for correct assembly
operation. If incorrect, replace the
charge roll link assembly with the
charge roll link assembly kit. If
correct, check the right charge roll
link assembly bearing for signs of
wear or contamination. Excessive
contamination could cause
intermittent charging of the charge
roll. If incorrect, replace the link
assembly. Check for continuity of the
right link assembly from...

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Cover Open Switch/Cable Service Check
FRU Action
1 Toner Cartridge Check the toner cartridge to make
sure it is correctly installed and that
the right and left hand cartridge
tracks are not loose or broken.
Check to make sure the cover open
switch activation tab on the toner
cartridge is not broken and that the
tab correctly activates the cover
open switch spring.
2 Cover Open Switch/Cable
AssemblyCheck the cover open switch for
proper mechanical operation. If
incorrect,...

Diagnostic Information2-32
4059-XXX
Dead Machine Service Check
Note:Remove any paper handling options before servicing the
printer for a dead machine condition. Observe all necessary ESD
precautions when removing and handling the controller board,
engine board or any of the installed option cards or assemblies.
Service Tip: When removing the LVPS from the printer observe the
following:
1. The LVPS uses a self docking connector that mates with
another connector mounted on the left side frame assembly....

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5 +5 V dc at the engine board
Te s t P o i n tCheck for +5 V dc at the +5 V dc test
point on the engine board. If correct,
replace the engine board. If
incorrect, go to step 6.
6 LVPS Fuse F1 Remove the LVPS from the printer
and check fuse F1. Replace the fuse
if the fuse is blown.
7 LVPS Fuse F1 - Continues
to blow after LVPS installed
in the printer.Replace fuse F1 if necessary. Turn
the LVPS on/off switch Off and
connect the AC line cord and turn
the LVPS On.
CAUTION:...