Lexmark Optra S 1620 Manual

							Diagnostic Information2-24
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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 duplex option is checked if installed.
– The output expander option exit rollers turn if installed.
5. “Busy” appears on the display.
6. The fuser lamp turns on. The fuser takes longer to warm up
from a cold start than a warm start.
7. The main fan turns on.
8. The main drive motor turns on.
9. The developer drive assembly drives the developer shaft in the
toner cartridge.
10. The exit rollers turn.
11. The operator panel LED starts blinking.
12. Models 2420, 2450 2455 and 3455 only - The auxiliary fan turns
on and continues to run until the printer is powered off.
13. “Ready” appears on the display. 
						

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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 - Display is blank.
Printer does not emit 5 beeps.Replace the operator panel
assembly.
Operator Panel continuously
displays all diamonds - 5 beeps
and does not complete POST.Go to the“Operator Panel Service
Check” on page 2-74.
Paperfeed problems - Base
printer or Integrated 250 Paper
Tr a yGo to the“Paper Feed Service
Check” on page 2-86.
Paper jams at exit of Redrive
Assembly - No Duplex Option
installed.Go to the“Paper Feed Service
Check” on page 2-86.
Paper jams at exit of Redrive
Assembly - Duplex Option
installedGo to the“Duplex Option Service
Check” on page 2-35.
Fuser Solenoid
(Models 1620/1650/2420/2450/
3455)fails to operate.Go to the“Fuser Envelope
Conditioner Solenoid Service
Check” on page 2-51.
Print quality - Black page Go to“Print Quality - All Black Page”
on page 2-92.
Print quality - Blank page Go to“Print Quality - Blank Page” on
page 2-92.
Print quality - Light print Go to“Print Quality - Light Print” on
page 2-101. 
						

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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 printed pageGo to“Print Quality - Toner on
backside of printed page” on
page 2-102.
Print quality - Vertical black bands
on edge of copyGo to“Print Quality - Black bands on
outer edges of the page” on
page 2-99.
Unable to clear a
“32-Unsupported Print Cartridge”
User Error MessageGo to“Smart Cartridge Service
Check” on page 2-102
Symptom Action
The printer does not recognize
the high capacity feeder option
installed.Go to the“High Capacity Feeder
Input Tray Service Check” on
page 2-61.
Paper feed problem with the high
capacity feeder option.Go to the“High Capacity Feeder
Input Tray Service Check” on
page 2-61. Symptom Action 
						

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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 from the
lower attached Paper Tray option
to the next higher mounted option.Go to the“Input Tray(s) Option
Service Check” on page 2-58.
Symptom Action
Paper feed problem with Duplex Go to the“Duplex Option Service
Check” on page 2-35.
Paper jams at Paper Removal
Tr a yGo to the“Duplex Option Service
Check” on page 2-35.
Paper skews in the Duplex Option Go to the“Duplex Option Service
Check” on page 2-35.
Paper fails to pass from lower
option thru the Duplex Option.Go to the“Duplex Option Service
Check” on page 2-35.
Symptom Action
Envelopes do not feed from the
envelope feeder.Go to the“Envelope Feeder Option
Service Check” on page 2-39.
Envelopes do not feed properly
into base printer.Go to the“Envelope Feeder Option
Service Check” on page 2-39. 
						

							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 particular area of the printer or option.
•Paperfeed Problems with error message: Use the“Sub Error
Codes For 9XX and 2XX Error Codes” on page 2-7to help
diagnose the problem.
•Print Quality Problems: Go to“Print Quality Test Pages” on
page 3-23and print a test page to help diagnose problems
before changing any settings or working on the printer.
•Use the resident diagnostics test provided to help isolate a
problem before taking the machine apart or removing any
options.
Symptom Action
Printer does not display Output
Bin FullGo to the“Output Bin Sensor
Standard Tray Service Check” on
page 2-78.
Paper does not feed all the way
into the output tray.Go to the“Toner Sensor Service
Check” on page 2-104. 
						

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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. Remove the charge roll from the left side charge roll bearing
and remove the roll from the printer. Leave the paper wrapped
around the charge roll until it is reinstalled.
FRU Action
1 Charge Roll Assembly Check the charge roll for correct
installation, toner buildup, marks,
cuts or other signs of contamination
or damage. Replace as necessary.
2 Left Side Charge Roll Link Check the left side charge roll link
assembly for correct assembly
operation. Check for damage to the
arm or bearing assembly. 
						

							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 the bearing
to the charge roll high voltage
contact on the right side frame. If
incorrect, replace the link assembly.
Note:The screw that attaches the
charge roll lead to the contact must
be secure. FRU Action 
						

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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, repair as necessary.
Disconnect the cover open switch
cable from J4 at the engine board
and measure the voltage at J4-3. It
measures approximately +5 V dc. If
the voltage is incorrect, replace the
engine board. If the voltage is
correct, check the voltage at J4-1. If
the voltage measures greater than
+1.0 V dc, replace the engine board.
If the voltage is correct, check the
continuity between J4-1 and J4-3 on
the cable. If no change in continuity
occurs as the switch is activated,
replace the cover open switch/cable
assembly. If the continuity changes
as the switch is activated, replace
the engine board.
Note:It is easier to check the
voltages on J4 with the controller
board removed. 
						

							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.
Some force may be required to pull the LVPS loose from the
connector.
2. Gently remove the LVPS supply using caution not to damage
the printed circuit board. Pull the LVPS out far enough to reach
the fuser lamp cable.
3. The fuser lamp cable uses a locking type of connector system.
Unlock the fuser lamp cable connector, disconnect the cable
and remove the LVPS from the printer.
FRU Action
1 Line Voltage Check the AC line voltage. If the line
voltage is incorrect, inform the
customer.
2 AC Line Cord Check the line cord for any signs of
damage. If correct, check the
continuity of the line cord and
replace if necessary.
3 +5 V dc at any Option
ConnectorCheck for +5 V dc on any of the
option connectors. The easiest to
access is the envelope feeder
connector located behind the lower
front door. If +5 V dc is present at
any of the connectors, go to step 9. If
+5 V dc is not present, go to step 4.
4 +5 V dc at the controller
board test pointCheck for +5 V dc at the +5 V dc test
pad located on the controller board.
If correct, go to step 9. 
						

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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: Before checking fuse F1
turn the LVPS Off and disconnect
the AC line cord. Check fuse F1. If
the fuse is blown, replace the LVPS.
8 LVPS Remove the LVPS from the machine:
CAUTION:Before making any
measurements on the LVPS output
connector, observe all necessary
safety precautions before applying
AC power. Measure the voltage on
LVPS output connector CN3. The
voltage measures +5 V dc. If
incorrect, replace the LVPS. FRU Action