Lexmark Optra S 1620 Manual

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Serial Port Service Check
Run the“Serial Wrap Test” on page 3-12.
Note:The Serial Wrap Test is designed to check the serial port
hardware by using a wrap plug (P/N 1329048) and invoking the
Serial Post Diagnostic Test. The test helps isolate the printer from
the serial cable and host. The test provides failure information on the
display for approximately three seconds. If the test indicates a
problem, replace the controller board.
Toner Sensor Service Check
Service...

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Transfer Roll Service Check
Service Tip: The transfer roll is 17.0 mm (.669 inch) diameter. Any
print quality problems such as lines that are spaced 17 mm apart
indicate you should check the transfer roll for damage, toner or
foreign material buildup.
Service Tip: The transfer roll assembly is part of the Maintenance Kit
for models 2450, 2455 and 3455 printers and is replaced when a 80
Scheduled Maintenance” message displays. Ask the customer if
they have replaced the...

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2 Left Transfer Arm Assembly Check the left transfer roll arm
assembly to make sure it is fastened
and locked in the down position. If
thearmisnotlockeddown,checkto
ensure the arm is not broken and will
lock into the EP frame correctly.
Check the left transfer arm assembly
spring for proper operation.
3 Right Transfer Arm
AssemblyCheck the right transfer arm
assembly to make sure it is fastened
and locked in the down position. If
thearmisnotlockeddown,checkto
make...

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3.Diagnostic Aids
This chapter explains the tests and procedures to identify printer
failures and verify repairs have corrected the problem.
To run the printer diagnostic tests described in this chapter, you
must put the printer in Diagnostic Mode.
Diagnostic Mode
To enter the Diagnostic Mode:
1. Turn the printer off.
2. Press and hold the Go and Return buttons.
3. Turn the printer on.
4. Release the buttons when Performing Self Test displays on
the operator panel.
The...

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Device Tests
Quick Disk Test
This test performs a non-destructive read/write on one block per
track on the disk. The test reads one block on each track, saves the
data, and proceeds to write and read four test patterns to the bytes
in the block. If the block is good, the saved data is written back to the
disk.
ToruntheQuickDiskTest:
1. Select the Quick Disk Test from the Device Tests menu.
– The power indicator blinks while the test is in progress.
– “Quick Disk Test/Test...

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– “xxxx Bad Blocks/yyyyyy Usable” message displays if fewer
than 2000 bad blocks are detected. xxxx indicates the
number of bad blocks and yyyyyy indicates the number of
usable blocks.
– “xxxx Bad Blocks/Replace Disk” message displays if more
than 2000 bad blocks are detected. The disk cannot be
recovered because too many bad blocks exist on the disk.
4. Press Go or Return/Stop to return to the Device Tests menu.
Flash Test
This test causes the file system to write and...

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3. Turn the printer On and release the buttons once “Performing
Self Test” displays.
– Once the printer is idle, the emulation can be downloaded
again.
4. Program the download emulation into the code overlay SIMM
again.
5. If these steps do not resolve the problem, replace the code
overlay SIMM and download the emulation again.
Duplex Tests
Duplex Quick Test
This test is used to verify that the Duplex Option Top Margin is set
correctly. This test prints a duplexed version of...

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1/100 inch. A positive offset moves the text down the page and
widens the top margin while a negative offset moves the text up the
page and narrows the top margin.
3. Press Return/Stop to exit the test.
Check the Top Margin Offset of the base printer.
Duplex Sensor Test
This test is used to determine whether or not the Duplex sensors
and switches are working correctly.
Select Sensor Test from the Duplex Tests menu.
Manually actuate each of the duplex sensors. When the...

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The following appears on the printer display:
DUPLEX MOTOR AA
BB CC DD EE FF
To pass the test the following results must display:
AA = 00
BB = in the range of 20 through 3F inclusively (hex)
CC = in the range of 3A through 5D inclusively (hex)
DD = in the range of 11 through 1F inclusively (hex)
Ignore bytes EE and FF.
If the test fails, remove the drive belt from the duplex D.C. motor and
run the motor test again. For the duplex D.C. motor to pass the test
the following...

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Duplex Feed 1 Test
This test feeds a blank sheet of paper to the duplex paper stop
position 1.
To run the Duplex Feed 1 Test:
1. Select Duplex Feed 1 from the Duplex Test menu.
– The power indicator blinks while the paper is feeding.
– Duplex Feed 1/Feeding message displays while the paper
is feeding through the printer.
– “Duplex Feed 1/Clear Paper” message displays when the
paper reaches paper stop position 1 and the power indicator
turns on solid.
Duplex Feed 2 Test...