Lexmark Optra S 1620 Manual

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Preface
This manual is divided into the following chapters:
•“General Information” contains a general description of the
printer, options, and the maintenance approach used to repair it.
General environmental and safety instructions as well as
special tools and test equipment are listed in this chapter.
•“Diagnostic Information” contains a service error code table,
user status message table, user error message table, symptom
table, and service checks used to isolate failing field replaceable
units (FRUs).
•“Diagnostic Aids” contains tests and checks used to locate or
repeat symptoms of printer problems. Printer operation
information is provided to enhance the tests and checks.
•“Repair Information” provides instructions for making printer
adjustments and removing and installing FRUs.
•“Connector Locations” uses illustrations to identify the major
components and test points on the printer.
•“Preventive Maintenance” contains safety inspection guidelines,
lubrication specifications, and maintenance information to
prevent problems and maintain performance.
•“Parts Catalog” contains illustrations and part numbers for
individual FRUs. 
						

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1.General Information
The Optra™ S Laser Printers are letter quality page printers
designed to attach to IBM-compatible PC’s and to most computer
networks.
The printer is available in eleven models.
Optra S Model
1250 (4059-121)
1255 (4059-125) 
						

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Optra S Models
1620 (4059-162)
1625 (4059-165)
1650 (4059-160)
1855 (4059-185)
1855 (4059-C01) 
						

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Optra S Models
2420 (4059-242)
2450 (4059-240)
2455 (4059-245)
3455 (4059-345) 
						

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Options
The following options are available. Some options are not available
in every country. Contact your point of purchase for options available
in your country.
Memory options of 4MB, 8MB, 16MB and 32MB
Flash memory options of 4MB and 8MB
Integrated network options
Token-Ring
Ethernet
Tr i - P o r t
IR Adapter
IPDS
SCS
USB/Parallel Port
250 and 500-sheet paper trays of A5, letter, and legal size.
250 Sheet Special Media Tray Assembly
500/500-sheet dual trays (Models 2450, 2455 and 3455)
2000 Sheet High Capacity Feeder
Envelope feeder
Duplex option
Hard Disk - 1.4 GB (Models 1250, 1620, 1650, 2420 and 2450)
Hard Disk - 2.1 GB (Models 1255, 1625, 1855, 2455 and 3455)
Forms Hard Disk - 2.1 GB
Infrared Adapter
Kiosk Adapter
Output Expander (Models 1650, 1855, 2450, 2455 and 3455) 
						

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Maintenance Approach
The diagnostic information in this manual leads you to the correct
field replaceable unit (FRU) or part. Use the service error codes,
user status messages, user error messages, service checks, and
diagnostic aids to determine the printer problem and repair the
failure. After you complete the repair, perform tests as needed to
verify the repair.
Tools Required For Service
Flat-blade screwdriver
#1 Phillips screwdriver
#2 Phillips screwdriver
7.0 mm nut driver
5.5 mm wrench
Needlenose pliers
Diagonal pliers
Spring hook
Feeler gauges
Analog or digital multimeter
Parallel wrap plug 1319128
Serial wrap plug 1329048
Twinax/serial debug cable 1381963
Coax/serial debug cable 1381964 
						

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Acronyms
CSU Customer Setup
DRAM Dynamic Random Access Memory
EDO Enhanced Data Out
EP Electrophotographic Process
EPROM Erasable, Programmable Read-Only
Memory
ESD Electrostatic Discharge
FRU Field Replaceable Unit
GB Giga Byte
HVPS High Voltage Power Supply
LASER Light Amplification by Stimulated Emission
of Radiation
LCD Liquid Crystal Display
LED Light-Emitting Diode
LVPS Low Voltage Power Supply
MROM Masked Read Only Memory
NVRAM Nonvolatile Random Access Memory
OEM Original Equipment Manufacturer
PC Photoconductor
POST Power-On Self Test
RIP Raster Imaging Processor
ROM Read Only Memory
SIMM Single In-Line Memory Module
SRAM Static Random Access Memory
UPR Used Parts Return
V ac Volts alternating current
V dc Volts direct current 
						

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2.Diagnostic Information
Start
CAUTION:Remove power from the printer before you connect or
disconnect any cable or electronic board or assembly for personal
safety and to prevent damage to the printer. Use the hand grips on
the side of the printer. Make sure your fingers are not under the
printer when you lift or set the printer down.
Use the service error code, user status message, user error
message, symptom table, service checks, and diagnostic aids in this
chapter to determine the corrective action necessary to repair a
malfunctioning printer.
Service error codes are indicated by a three digit error code. If a
service error code is displayed, go to the“Service Error Codes” on
page 2-2.
User status messages provide the user with information on the
current status of the printer. Ready is displayed on the first line of the
display unless Power Saver is invoked, then Power Saver is
displayed. If a user status message is displayed, go to the“User
Status Messages” on page 2-12.
User error messages are indicated by a two or three digit error code
that provides the user with information that explains a problem with a
print cartridge, paper jam, option, port, and so on. If a user error
message is displayed, go to the“User Error Messages” on
page 2-16.
If your machine completes the“Power-On Self Test (POST)” on
page 2-24without an error, and you have a symptom, go to the
“Symptom Tables” on page 2-25. Locate your symptom and take the
appropriate action.
If a service error code appears while you are working on the
machine, go to the“Service Error Codes” on page 2-2and take the
indicated action for that error. 
						

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Service Error Codes
Service Error Codes are generally non-recoverable except in an
intermittent condition when you can POR the printer to temporarily
recover from the error condition.
Error Code Action
900 RIP Software Replace the controller board.
901 Engine Flash This error indicates that the flash which the engine board
code is programmed into is bad. Replace the engine
board.
902 General
Engine SoftwareThese errors indicate an unrecoverable engine software
error. Replace the engine board.
903 Paperport
Link Driver Error
904 Interface
Violation by the
controller
software
905 Interface
Violation by
Paper por t Device
906 Controller-
Engine Link
Driver Error 
						

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910 DC Pick
Motor DC Pick
Motor StallError Codes 910,911,912,913 and 914 are indications
that a Tray 1 paper feed problem has been detected. Go
to the“Input Tray(s) Option Service Check” on
page 2-58.
911 DC Pick
Motor Excessive
PWM
912 DC pick
motor below
speed
913 DC pick
motoroverspeed
914 DC pick
motor: No
encoder feedback
917 Transfer Roll Indicates a problem in the transfer roll area. Go to the
“Transfer Roll Service Check” on page 2-105.
920 Fuser Error Indicates that the fuser is below temperature when
printing. Go to the“Cold Fuser Service Check” on
page 2-48.
921 Fuser Error Indicates that the fuser is below standby temperature
when the printer is idle. Go to the“Cold Fuser Service
Check” on page 2-48.
922 Fuser Error Fuser failed to reach standby temperature. Go to the
“Cold Fuser Service Check” on page 2-48.
923 Fuser Error Fuser is too hot during printing or when printer is idle. Go
to the“Hot Fuser Service Check” on page 2-50.
924 Fuser Error An open circuit has been detected in the Fuser
Thermistor Circuit. Go to the“Hot Fuser Service Check”
on page 2-50.
925 Fuser Error Wrong fuser lamp installed. Check the fuser lamp for the
correct type of lamp that should be installed.
927 Fan Stalled Indicates a printer fan stalled. Go to the“Fan Service
Check” on page 2-47.
928 Erase Lamps Indicates that the engine has detected that either the
erase lamp assembly is missing or disconnected. Go to
the“Erase Lamp Service Check” on page 2-46. Error Code Action