Lexmark Optra S 1620 Manual

Diagnostic Information2-44
4059-XXX
260 Paper Jam displays, unable to clear and envelopes fail to feed
from the hopper. Kick rolls ARE rotating.
Check the deflector gap adjustment before continuing this service
check.
FRU Action
1 Deflector Gap Adjustment Check the deflector gap adjustment.
The adjustment may be too narrow.
2 Weight Assembly Check the weight assembly to make
sure it moves up and down freely
without any binds. Also check to
make sure the weight assembly
rests on all the rear kick rollers...

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260 Paper Jam displays, envelope stops in feeder paper path.
Envelope Feeder multifeeds or may not display a 260 Paper Jam
message.
260 Paper Jam displays. An envelope stopped in the paper path of
the feeder and an envelope also stopped in the base printer paper
path.
FRU Action
1 Kick Rolls/Feed Rolls/Drive
RollsCheck all the rolls for any signs of oil,
grease or other contamination. If you
find a problem, clean or replace
parts as required.
2 Deflector Gap Adjustment...

Diagnostic Information2-46
4059-XXX
Erase Lamp Service Check
Error code 928 may be displayed when the printer detects that the
erase lamp assembly, cable or engine board is defective.
Note:If the erase lamp assembly is defective, both the erase lamp
and lens are replaced as a kit.
Make the following checks when a 928 service error displays.
FRU Action
1 Cable, Front Harness Check the connection of the front
harness to connector J10 on the
engine board for correct installation.
If incorrect, repair as...

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Fan Service Check
Auxiliary Fan Service Check
The auxiliary fan is in models 2420, 2450, 2455 and 3455.
Fan does not run or is noisy.
Main Fan Service Check
Check the cable connections at J1 on the engine board and at the
main fan assembly. The main fan runs continuously when the printer
is powered on unless the printer is in the Power Saver mode.
FRU Action
1 Fan Assembly Check the fan for proper installation
and for excessive noise. If incorrect,
replace the fan and...

Diagnostic Information2-48
4059-XXX
Fuser Service Check
Cold Fuser Service Check
Error codes 920, 921, and 922 may display for a cold fuser failure. A
920 error caused by low line voltage can sometimes be cleared by
turning the machine off and then on again. A 925 service error
indicates the wrong fuser lamp is installed in the printer and does not
match the one stored in the printer code.
Service Tip: Set the Fuser Temperature to NORMAL before starting
this service check.
3 Error Code 927 (Fan runs)...

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2 Fuser Lamp Remove the controller board. Run
the Diagnostic Print Test and
observe the lamp through the left
side frame. If the lamp doesn’t come
on, unplug the printer and check the
continuity between the two pins on
the fuser lamp cable going to the
fuser assembly. If you do not
measure continuity, remove the fuser
assembly and check the continuity of
the lamp. If incorrect, replace the
lamp. If correct, replace the fuser
cover assembly.
3LVPSandACFuserLamp
CableTurn...

Diagnostic Information2-50
4059-XXX
Hot Fuser Service Check
Error codes 923 and 924 may display for a hot fuser failure.
CAUTION:The fuser may be hot, use caution before removing or
servicing.
FRU Action
1 Fuser Cover Assembly
(Assembly includes
Thermistor and Thermal
Fuses.)Check for damage to the thermistor
assembly. Check the resistance of
the themistor:
HOT - J2-1 to J2-2 = 2.5K ohms
COLD =150K ohms to 260K ohms
Check the continuity from each pin
of J2 to ground. If there is continuity,
replace the...

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Fuser Envelope Conditioner Solenoid Service Check
The fuser solenoid is in models 3455, 2455, 2450, 2420, 1855,
1650, 1625 and 1620 and the World Trade printer model 2450.
Service Tip: Try changing the envelope enhance level setting. A
different setting may correct the problem.
Note:The level I fuser board uses +42 V dc which is derived from
the LVPS via the interconnect board (J1) and the envelope
conditioner cable. The solenoid is controlled by logic located on the...

Diagnostic Information2-52
4059-XXX
Configuration 1
A level 1 fuser board and level 1 engine board are installed in
configuration 1.
Note:Check the fuser envelope conditioner solenoid adjustment as
described in the adjustment section“Fuser Solenoid Adjustment” on
page 4-3.
FRU Action
1 Fuser Envelope Conditioner
SolenoidThe operation of the fuser solenoid
can be observed by removing the
redrive assembly. Check for proper
mechanical operation of the solenoid
and associated hardware, link and so
on. If...

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3LVPS
Interconnect BoardIf the +42 V dc test point does not
measure approximately +42 V dc,
check the continuity of the cable
connected between J3 on the fuser
control and J1 on the interconnect
board. If the cable does not measure
continuity, replace the cable. If the
cable measures continuity, check the
voltage at CN3-18 on the LVPS. The
voltage measures approximately
+42 V dc. If the voltage is correct,
replace the interconnect board
assembly. If the voltage is...