Lexmark Optra S 1620 Manual

Repair Information4-58
4059-XXX
Smart Cartridge Contacts
1. Remove the upper front cover.
2. Release tab (A) and remove the contact cover.
3. Remove the contact plunger (B).
4. Remove the two screws (C) and remove the contacts (D). 

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Toner Sensor
1. Remove the right side cover.
2. Remove the toner sensor mounting screw (A). Disconnect the
toner sensor cable and remove the toner sensor. 

Repair Information4-60
4059-XXX
Transfer Roll Assembly
1. Open the upper front cover and remove the print cartridge.
2. Pivot the transfer roll assembly toward the front of the printer.
3. Unsnap the transfer roll assembly from the left and right pivot
arms and remove the transfer roll assembly.
Upper Paper Deflector Assembly
1. Open the multipurpose tray and remove the tray from the two
mounting posts. Be careful not to lose the O-ring on the right
mounting post.
2. Gently release the upper deflector...

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Upper Front Cover Hinge Assembly
1. Remove the upper front cover.
2. Remove the laser assembly cover.
3. Remove the C-clips (A) from the upper front cover hinge
assembly left and right hinge pins and remove the pins. Note
the pin orientation and the C-clip location on the inside of each
hinge.
4. Detach the two springs (B) from the upper front cover hinges.
5. Disconnect the operator panel cable from the operator panel
assembly.
6. Raise the upper front cover hinge...

Repair Information4-62
4059-XXX
Upper Front Cover Interlock Switch Assembly
1. Remove the upper front cover.
2. Remove the operator panel.
3. Remove the inner EMC shield.
4. Press the retaining tabs (A) and remove the interlock switch
assembly.
5. Note the routing of the interlock switch assembly cable and
disconnect the cable at connector J4 on the engine board. 

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5.Connector Locations
Low Voltage Power Supply
Connector Pin No. Signal
CN3 Interconnect
Board1+5Vdc
2+5Vdc
3Ground
4Ground
5Ground
6Ground
7+24Vdc
8+24Vdc
9 Heat on
10 +5 V dc
11 +5 V dc
12 Ground
13 Ground
14 Ground
15 Ground
16 +24 V dc
17 ZC Out*
18 +42 V dc 

Connector Locations5-2
4059-XXX 

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High Voltage Power Supply
Connector Pin No. Signal
CN1 Engine Board 1 Developer PWM
2 +24 V dc Return
3 Charge PWM
4+24VdcIN
5TXPWM
6TXEnable
7 TX CUR PWM
8SVROOUT 

Connector Locations5-4
4059-XXX
Engine Board
Connector Pin No. Signal
J 1 Ma in Fan 1 Fa n S tal l
2 Ground
3FanOn
J2 Fuser Board 1 Exit Sns*
2ThumpB
3+5Vdc
4ThumpA
5 Ground
6 Hrtherm
7 Thermgnd
8NarrowMedia
J3 Printhead (Mirror
Motor)1 +24 V dc Return
2 +24 V dc Return
3ReFREQ
4LOCKn
5Start*
6 +24 V dc Return
7+24Vdc
J4 Cover Closed Switch 1 Cover Closed
2 Ground
3+5Vdc 

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J5 Printhead 1 LENA*
2 Ground
3LAOJ*
4 Ground
5 LASERPWM
6+5Vdc
7 Ground
8Video*
9 Ground
10 Ground
J6 Output Level Sensor 1 Ground
2 Ground
3Opt2
4Opt1
5+5Vdc
J7 Auxiliary Fan
(Model 2420/2450/2455/
3455)1 CRFANONn
2 Ground
J8 Printhead HYSNC 1 Ground
2 HSYNC*
3 Ground
4+5Vdc
J9 Fuser Inductor Sense
WT 2450 Only1FISENSEn
2 Ground Connector Pin No. Signal