Apple Personal LaserWriter LS Specifications

Service Source K PLW SC/NT/NTR/LS Personal LaserWriter SC, Personal LaserWriter NT,Personal LaserWriter NTR, Personal LaserWriter LS,Personal LaserW

PLW SC/NT/NTR/LS Basics - 8PS13Pickup Unit Paper SensorActuator: Sensing lever in feeder assemblyis tripped by paper entering feed cycle.PhotoInterr

Take Apart Sensor Mounting Plate - 551 Remove the two black mounting screws and washers and slightly lift the sensor mounting plate.2 Disconnect conn

Take Apart Density-Adjusting Board - 56Density-Adjusting BoardThis topic applies only to the SC, NT, NTR, and LS models.Before you begin, remove the

Take Apart Density-Adjusting Board - 571 Disconnect fan connector J701 from the density-adjusting board.2 Disconnect connector J213 from the DC contr

Take Apart Fan-and-Sensor Board - 58Fan-and-Sensor BoardThis topic applies only to the LS/L model.Before you begin, remove the following:• Top cover•

Take Apart Fan-and-Sensor Board - 59software on the Personal LaserWriter LS/L, so the board at this location has been redesigned and renamed to refle

Take Apart Fan-and-Sensor Board - 601 Disconnect fan connector J701 from the fan-and-sensor board.2 Disconnect connector J213 from the serial control

Take Apart Interconnect Board - 61Interconnect BoardThis topic applies only to the SC, NT, and NTR models.Before you begin, remove the following:• To

Take Apart Interconnect Board - 621 Carefully disconnect the cables from interconnect board connectors J302 and J303.2 Remove the three black mountin

Take Apart DC Controller Board - 63DC Controller BoardThis topic applies only to the SC, NT, NTR, and LS models.Before you begin, remove all followin

Take Apart DC Controller Board - 64perform the “DC Controller Mount Plate” topic.±Warning: Never disconnect optical fiber cable J204 when the printe

PLW SC/NT/NTR/LS Basics - 9PS501Multipurpose Tray SensorActuator: Sensing lever in multipurpose cableassembly is tripped by manually fed paper.Photo

Take Apart DC Controller Board - 65• Cassette feeder board cable from J205• High-voltage power supply cable from 206• Paper pickup sensor cable from

Take Apart DC Controller Board - 662 Remove the cables from the one board-mounted retainer.3 Remove the four mounting screws and lift the DC controll

Take Apart DC Controller Mount Plate - 67DC Controller Mount PlateThis topic applies only to the SC, NT, NTR, and LS models.Before you begin, remove

Take Apart DC Controller Mount Plate - 68Mount Plate” topic.±Warning: Never disconnect optical fiber cable J204 when the printer is powered on. Its

Take Apart DC Controller Mount Plate - 692 Disconnect the following cables from the DC controller board:• Laser assembly board cable from J202• Scann

Take Apart DC Controller Mount Plate - 70• High-voltage power supply cable from J206• Paper pickup sensor cable from J208• Fuser assembly cable from

Take Apart DC Controller Mount Plate - 713 Remove the cables from the three cable retainers.4 Remove the four mounting screws and lift out the DC con

Take Apart Power Supply (SC, NT, NTR) - 72Power Supply (SC, NT, NTR)This topic applies only to the SC, NT, and NTR models.Before you begin, remove th

Take Apart Power Supply (SC, NT, NTR) - 731 Disconnect the power supply cable from power switch connector SW11 at the back right of the printer (not

Take Apart Power Supply (SC, NT, NTR) - 743 Disconnect connector J101 by squeezing it and then lifting up.4 Remove the three mounting screws and lift

PLW SC/NT/NTR/LS Basics - 10PS502Face-Up Cover SensorActuator: Sensing arm is trippedby the closing of the face-up ocver.Photo InterrupterCoverSensi

Take Apart Power Supply (LS) - 75Power Supply (LS)This topic applies only to the LS model.Before you begin, remove the following:• Top cover• I/O boa

Take Apart Power Supply (LS) - 761 Disconnect the power supply cable from power switch connector SW11 (not shown). Remove the power cable from the c

Take Apart Power Supply (LS) - 773 Disconnect connector J101 by squeezing it and then lifting up.4 Remove the three mounting screws and lift out the

Take Apart Power Supply (LS/L) - 78Power Supply (LS/L)This topic applies only to the LS/L model.Before you begin, remove the following:• Top cover• P

Take Apart Power Supply (LS/L) - 791 Disconnect connector J212 from the serial controller and remove the cable from the black cable retainer near J21

Take Apart Power Supply (LS/L) - 802 Disconnect connector J101 by squeezing it and then lifting up.3 Remove the three mounting screws and lift out th

Take Apart High-Voltage Power Supply - 81High-Voltage Power SupplyThis topic applies to all models of the printer.Before you begin, remove all follow

Take Apart High-Voltage Power Supply - 821 Lift and draw out the plastic tray containing the high-voltage power supply. 2 Disconnect connectors J601

Take Apart High-Voltage Power Supply - 83cable connector nests snugly in the guide tabs on the rear of the contact assembly.

Take Apart Laser Assembly - 84Laser AssemblyThis topic applies to all models of the printer.Before you begin, remove all following items present in t

PLW SC/NT/NTR/LS Basics - 11PS901Paper Cassette SensorActuator: Sensing arm is tripped by theinsertion of loaded cassette tray.PhotoInterrupterPaper

Take Apart Laser Assembly - 851 Disconnect connector J401.2 Caution: Never loosen the two black screws at the upper left and lower right. If these

Take Apart Main Motor - 86Main MotorThis topic applies to all models of the printer.Before you begin, remove all following items present in the model

Take Apart Main Motor - 871 Remove the two screws that secure the motor to the chassis.2 Remove the wires from the cable retainer. Replacement Note:

Take Apart Lens and Scanner Assemblies - 88Lens and Scanner AssembliesThis topic applies to all models of the printer.Before you begin, remove all fo

Take Apart Lens and Scanner Assemblies - 89±Warning: Always replace the protective scanner assembly cover before you switch on the printer. The ref

Take Apart Lens and Scanner Assemblies - 903 Caution: Do not touch the focusing lens on the lens assembly. If you touch the lens or the lens become

Take Apart Lens and Scanner Assemblies - 914 Caution: Do not touch the scanner assembly mirror. If it gets dirty, it must be replaced.Disconnect co

Take Apart Drive Assemblies - 92Drive AssembliesThis topic applies to all models of the printer.Before you begin, remove all following items present

Take Apart Drive Assemblies - 931 Using needlenose pliers, pull out the black cable retainer pin that holds the connector cables.2 Remove the screw t

Take Apart Drive Assemblies - 943 Remove the cables from the cable clamp.4 Remove the three mounting screws and pull out the drive assembly.Replaceme

Basics Startup Test Pages - 12 Startup Test Pages The Personal LaserWriter SC, NT, and NTR generate a startup test page 2 – 3 minutes after you swit

Take Apart Drive Assemblies - 955 Remove the three mounting screws and pull off the drum drive assembly.Drum Drive Assembly

Take Apart Feeder Assembly - 96Feeder AssemblyThis topic applies to all models of the printer.Before you begin, remove all following items present in

Take Apart Feeder Assembly - 971 Open the front access door.2 Note: The access panel mentioned below is behind the right roller of the feeder assemb

Take Apart Feeder Assembly - 983 Disconnect the sensor connector.4 Note: There are holes cut through the main body block to facilitate the screwdriv

Take Apart Feeder Assembly - 995 Remove the white gear and black plastic bushing from the end of the feeder assembly shaft.6 Lift up the feeder assem

Take Apart Fuser Assembly - 100Fuser AssemblyThis topic applies to all models of the printer.No preliminary steps are required before you begin this

Take Apart Fuser Assembly - 1011 Open the front access door.2 Lift up the face-down delivery assembly and remove the five gold-colored screws that se

Take Apart Fuser Assembly - 1023 Using a flatblade screwdriver, carefully pry between the fuser assembly and the front cover at the right edge (A) wh

Take Apart Fuser Heater Bulb - 103Fuser Heater BulbThis topic applies to all models of the printer.Before you begin, remove the fuser assembly.Fuser

Take Apart Fuser Heater Bulb - 1041 Remove the gold-colored screw and the washer that secure the right side of the heater bulb.Screw

PLW SC/NT/NTR/LS Basics - 13ÊNT/NTR Startup Test PageCommunication ProtocolRS-232 serial or AppleTalkFonts in ROMInstalled RAMI/O BoardTypeVersion of

Take Apart Fuser Heater Bulb - 1052 Remove the two gold-colored screws on the left end that secure the left connector bracket to the fuser assembly.L

Take Apart Fuser Heater Bulb - 1063 Remove the two gold-colored screws on the left rear face that secure the left connector bracket to the fuser asse

Take Apart Fuser Heater Bulb - 1075 Remove the small silver-colored screw that secures the heater bulb retaining spring to the left connector bracket

Take Apart Fuser Heater Bulb - 1087 Remove the two black screws that fasten connector J501 to the left connector bracket.J501LeftConnectorBracket

Take Apart Fuser Heater Bulb - 1098 Caution: Be careful not to touch the surface of the heater bulb when removing it from the fuser assembly. If yo

Take Apart Fuser PCB Assembly - 110Fuser PCB AssemblyThis topic applies to all models of the printer.Before you begin, remove the following:• Top cov

Take Apart Fuser PCB Assembly - 1111 Remove the screw that fastens the rod assembly to the front access door.2 Remove the black screw that secures co

Take Apart Rod Assembly - 112Rod AssemblyThis topic applies to all models of the printer.Before you begin, remove the following:• Top cover• Fuser as

Take Apart Rod Assembly - 1131 Remove the screw that fastens the metal end of the rod assembly to the front access door.Rod Assembly

Take Apart Rod Assembly - 1142 Remove the two screws that secure the rod assembly to the printer chassis.3 Lift out the rod assembly.

Basics Startup Test Pages - 14 The Personal LaserWriter SC test page consists of a line matrix. The printer generates a test page only if you set i

Take Apart High-Voltage Contact Assy - 115High-Voltage Contact AssyThis topic applies to all models of the printer.Before you begin, remove all follo

Take Apart High-Voltage Contact Assy - 1161 Pull out the plastic tray from beneath the scanner assembly and disconnect connector J602 from the high-v

Take Apart High-Voltage Contact Assy - 1173 Remove the contact assembly mounting screw.4 Remove the power supply cable from the cable guide on the hi

Take Apart Face-Up Delivery Drive - 118Face-Up Delivery DriveThis topic applies to all models of the printer.Before you begin, remove the fuser assem

Take Apart Face-Up Delivery Drive - 1191 Remove the screw that secures the face-up delivery drive assembly to the front access door.

Take Apart Face-Up Delivery Drive - 1202 Lift out the face-up delivery drive assembly and the white, 20-tooth gear.

Take Apart Face-Up Cover Assembly - 121Face-Up Cover AssemblyThis topic applies to all models of the printer.Before you begin, detach the face-up tra

Take Apart Face-Up Cover Assembly - 1221 Using needlenose pliers, unhook the tension spring that connects the face-up cover to the front access door.

Take Apart Face-Up Cover Assembly - 1232 Open the face-up tray by pulling up on the green latch on the outside of the front access door.3 Grip the bo

Take Apart Face-Down Delivery Assembly - 124Face-Down Delivery AssemblyThis topic applies to all models of the printer.Before you begin, remove the f

Basics Service Test Page - 15 Service Test Page Successful printing of a service test page confirms print engine operation.There are three variation

Take Apart Face-Down Delivery Assembly - 1251 Swing the face-down delivery assembly cover open and remove the four mounting screws.Face-DownDeliveryA

Take Apart Face-Down Delivery Assembly - 1262 Lift out the face-down delivery assembly.Note: The deflector below the face-down delivery assembly is

Take Apart Separation Pad - 127Separation PadThis topic applies to all models of the printer.No preliminary steps are required before you begin this

Take Apart Separation Pad - 1281 Open the front access door.2 Grasp the clear plastic tab and pull the separation pad straight up and out of the prin

Take Apart Transfer Guide Assembly - 129Transfer Guide AssemblyThis topic applies to all models of the printer.No preliminary steps are required befo

Take Apart Transfer Guide Assembly - 1301 Open the front access door.2 Note: On the LS/L the grip on the right side (A) has been closed into a ring.

Take Apart Transfer Guide Assembly - 131Replacement Note: When replacing the transfer guide assembly, be sure that you snap the black plastic grip

Take Apart Transfer Guide Assembly - 132Transfer Roller Mount Assembly1 If you want to remove a transfer roller mount assembly, remove the single scr

Take Apart Pickup Roller Assembly - 133Pickup Roller AssemblyThis topic applies to all models of the printer.Before you begin, remove the transfer gu

Take Apart Pickup Roller Assembly - 1341 Remove the three black mounting screws and lift out the pickup roller assembly.Pickup RollerAssembly

Basics Service Test Page - 16 SC, NT, NTR First remove the I/O board. You can then access the test button through the 1/4-inch diameter opening in

Take Apart Front Access Door - 135Front Access DoorThis topic applies to all models of the printer.Before you begin, remove all following items prese

Take Apart Front Access Door - 136Note: Perform this procedure only if you are replacing the front access door itself.1 Disconnect connector J209 fr

Take Apart Front Access Door - 137• LS: Disconnect connector J803 on the I/O board (not shown).• LS/L: Disconnect connector J215 from the serial co

Take Apart Front Access Door - 1384 Using needlenose pliers, pull out the black cable retainer pin that holds the connector cables.5 Remove the cable

Take Apart Front Access Door - 1398 Remove the screw that fastens the metal end of the rod assembly to the front access door.Rod Assembly

Take Apart Front Access Door - 1409 Disconnect connector J101 from the power supply.J101

Take Apart Front Access Door - 14110 Locate the two plastic pins at the hinge points on either end of the front access door (left pin is illustrated

Take Apart Multipurpose Cable Assembly - 142Multipurpose Cable AssemblyThis topic applies to all models of the printer.Before you begin, remove all f

Take Apart Multipurpose Cable Assembly - 143mountNote: The multipurpose cable assembly is the primary conduit of DC power to the front access door.

Take Apart Multipurpose Cable Assembly - 1441 Remove the screw that secures connector J502 and the small circuit board to the front access door.2 Rem

Basics Service Test Page - 17 LS First remove the I/O board bracket. You can then access the test button through the 1/4-inch diameter opening in

Take Apart Multipurpose Cable Assembly - 1454 Remove the screw that secures the pickup roller clutch solenoid.5 Remove the screw that secures the gro

Take Apart Multipurpose Cable Assembly - 1466 Using needlenose pliers, pull out the black cable retainer pin that holds the connector cables.7 Remove

Take Apart Multipurpose Cable Assembly - 1479 Disconnect connector J101 from the power supply.J101

Take Apart Multipurpose Cable Assembly - 14810 Disconnect connector J209 from the DC controller board, or from the serial controller in the case of t

Take Apart Multipurpose Cable Assembly - 149• LS/L: Disconnect connector J215 from the serial controller (not shown).12 Open the two cable retainers

Take Apart Multipurpose Cable Assembly - 15013 Remove the two black screws that secure the plastic sensor mount. Lift up slightly on the sensor moun

Take Apart Multipurpose Cable Assembly - 15115 Note: You will need to install the old paper sensing lever into the replacement cable assembly.Remove

Take Apart Multipurpose Cable Assembly - 152Replacement Note: If you removed the left transfer roller mount assembly prior to this procedure, the pa

Service Source K Upgrades PLW SC/NT/NTR/LS

Upgrades NTR ROM Upgrade - 1 NTR ROM Upgrade The NTR ROM Upgrade Kit consists of six ROMs. The following numbers are imprinted on the six Rev. 4.0

Service Source K Basics PLW SC/NT/NTR/LS

Basics Service Test Page - 18 LS/L First remove the test button cover on the rear panel of the printer. You can then access the test button through

Upgrades NTR ROM Upgrade - 2 Rev. 4.0 ROMs, you must remove the ROMs and install them on the replacement board. Replacement NTR boards do not have

Service Source K Additional Procedures PLW SC/NT/NTR/LS

Additional Procedures Voltage Conversions - 1 Voltage Conversions Before you begin, remove the following:• Top cover• I/O board and shield• End plat

Additional Procedures Voltage Conversions - 2 1 Replace each of the components shown with a corresponding one of the new voltage.

Additional Procedures Nip Width Measurement - 3 Nip Width Measurement Before you begin, remove the following:• Top cover• I/O board and I/O shieldYo

Additional Procedures Nip Width Measurement - 4 3 When the leading edge of the paper appears at the face-down delivery rollers, switch off the print

Additional Procedures Nip Width Measurement - 5 replace the lower fuser roller and perform the test again. If the measurement still does not meet s

Additional Procedures Cleaning Page - 6 Cleaning Page Use the cleaning page if frequent paper jams occur in the fuser area or after replacement of t

Additional Procedures Cleaning Page - 7 2 Open the “Cleaning page” file located on the Personal LaserWriter Installation Disk.3 Select “Print” from

Additional Procedures Cleaning Page - 8 4 Place the cleaning page face-up on the multipurpose tray and repeat the printing procedure described on th

Service Source K Specifications PLW SC/NT/NTR/LS

Service Source K Adjustments PLW SC/NT/NTR/LS

Adjustments Registration Adjustment - 1 Registration Adjustment Before you begin, remove the following:• Top cover• I/O board and I/O shieldPerform

Adjustments Registration Adjustment - 2 controller board to “0”2 Connect an AC power cord to the printer and switch on the printer.3 Press the servi

Adjustments Registration Adjustment - 3 4 Using a metric ruler, measure the distance from the leading edge of the paper to the test pattern for each

Adjustments Registration Adjustment - 4 6 Using the table to the left, identify the adjustment required to return the registration adjustment to 3.6

Adjustments Refurbishment Kit - 5 Refurbishment Kit Since all major parts of the Personal LaserWriter are rated to last the life of the printer itse

Service Source K Exploded View PLW SC/NT/NTR/LS

Exploded View 1Personal LaserWriter SC/NT/NTR/LS Exploded ViewPersonal LaserWriter SC/NT/NTR/LS Exploded ViewCover, Bottom (Left)949-0825Stackabili

Exploded View 2Multipurpose Tray Assy949-0279 (50 sheet)949-0341 (70 sheet)Transfer Roller870-0103Left Transfer Roller Mount890-0607Right Transfer

Specifications General - 1 General Engine Canon P110 engine Printing Method Electrophotography using single-component dry toner Optical System Semic

Specifications Intro Dates - 2 Intro Dates SC and NT July 1990 LS March 1991 LS/L and NTR March 1992

Specifications Logic Board - 3 Logic Board CPU SC: Motorola 68000 microprocessor (7.275 MHz)NT: Motorola 68000 microprocessor (12 MHz)NTR: N/ALS:

Specifications Logic Board - 4 ROM SC: 32KNT: 1.25 MBNTR: 3 MBLS: N/ALS/L: N/A I/O SC: SCSINT: LocalTalk, RS-232, RS-422NTR: LocalTalk, RS-2

Specifications Performance - 5 Performance Printing Speed 4 pages per minute maximum; actual performance depends on the application Print Delivery F

Specifications Paper - 6 Paper Paper Weights Cassette feed: 20 lb., single-sheet, photocopy bondManual feed: 20-28 lb., letterhead and colored sto

Specifications Built-In Fonts - 7 Built-In Fonts SC, LS, and LS/L N/A NT Times, Helvetica, Helvetica Narrow, Courier, Symbol, Palatino, ITC Avant Ga

Specifications Environmental - 8 Environmental Temperature 50-90.5° F (10-32.5° C) Humidity 20-80% relative humidity Noise Level Printing: Under 53

Basics Product Information - 1 Product Information The printers covered in this manual are• Personal LaserWriter SC• Personal LaserWriter NT • Perso

Specifications Electrical - 9 Electrical Line Voltage US/Japan: 100/115 V, 50/60 HzEurope/Australia: 220/240 V, 50 Hz Power Consumption 600 W maxi

Specifications Physical - 10 Physical Dimensions Height: 8 in. (20.3 cm), 9.8 in. (24.8 cm) with cassette feederWidth: 15 in. (38 cm) Weight SC, N

Service Source K Troubleshooting PLW SC/NT/NTR/LS

Troubleshooting Status Panel LEDs - 1 Status Panel LEDs On the next page is an illustration that shows the possible LED patterns that can occur with

Troubleshooting Status Panel LEDs - 2LS and LS/L display onlythese configurations(see “LS Error Messages”)Front Access Door OpenNo Toner Cartridgeor

Troubleshooting Capacitor Discharge - 3 Capacitor Discharge When there is a failure of the fusing system, the DC controller board shuts off current

Troubleshooting Capacitor Discharge - 4 Before you can use the printer again, you must switch the power off and wait 3 minutes for the capacitor to

Troubleshooting Capacitor Discharge - 5Capacitor C212(C209 on LS/L)

Troubleshooting LS Error Messages - 6 LS Error Messages The SC, NT, and NTR display errors through status panel readouts (see “Status LEDs”). The L

Troubleshooting Roller Diameters - 7 Roller Diameters Repetitive printing defects can often be isolated by measuring the tracking left by rollers.

Basics Paper Paths - 2 Paper Paths There are four paper paths in the Personal LaserWriter. Paper is fed from the cassette or multipurpose tray and

Troubleshooting Roller Diameters - 8Fuser Assembly2.15" (54 mm): lower fuser roller2.9" (74 mm): upper fuser roller3.7" (94 mm):

Troubleshooting Drum Check - 9 Drum Check Interrupting a print cycle and inspecting the photosensitive drum can help isolate the cause of print qual

Troubleshooting Flowcharts - 10 Flowcharts The flowcharts for this manual are contained in an interactive file called “PLW SC/NT/NTR/LS Flowcharts.”

Personal LaserWriter SC/NTWiring Diagram123456789123456789J205 J901123456J210CGNDAPS9011321325476SL902SL901CassettePick-Up RollerClutch SolenoidCasset

Personal LaserWriter LS Wiring Diagram123456789123456789J205 J901123456J210CGNDAPS9011321325476SL902SL901CassettePick-Up RollerClutch SolenoidCassett

Service Source K Take Apart PLW SC/NT/NTR/LS

Take Apart Top Cover - 1 Top Cover This topic applies to all models of the printer.No preliminary steps are required before you begin this procedure

Take Apart Top Cover - 2 1 Open the front access door.2 Note: There is a pin on the inside of the rear panel that seats in a notch in the chassis.

Take Apart Front Cover - 3 Front Cover This topic applies to all models of the printer.No preliminary steps are required before you begin this proce

Take Apart Front Cover - 4 2 Remove the two screws that secure the front cover to the front access door. Lift up the face-down delivery assembly an

Basics LS–LS/L Identification - 3 LS–LS/L Identification The LS/L is a cost-reduced version of the LS but is sold and packaged under the same LS nam

Take Apart Front Cover - 5 Replacement Note: Lower the multipurpose tray and remove the face-up delivery tray. Insert the right holding tab first

Take Apart LED Cover - 6 LED Cover This topic applies to all models of the printer.Before you begin, remove the front cover.LED Cover

Take Apart LED Cover - 7 1 Remove the two screws that secure the LED cover to the front access door.LED Cover

Take Apart LED Cover - 8 2 Lift off the LED cover and disconnect the LED cable from the LED holder.LED CableConnector

Take Apart Cassette Feeder Tray - 9 Cassette Feeder Tray This topic applies to all models of the printer.No preliminary steps are required before yo

Take Apart Cassette Feeder Tray - 10 1 Turn the printer upside down so that it is resting on its top.2 Remove the four mounting screws and lift off

Take Apart Pedestal Covers - 11 Pedestal Covers This topic applies to all models of the printer.Before you begin, remove the cassette feeder tray. N

Take Apart Pedestal Covers - 12 1 Unhook the spring from the cassette feeder tray, and remove the cassette stop cover.Cassette Stop CoverSpring

Take Apart Pedestal Covers - 13 2 Caution: Be careful not to damage the cassette microswitches when removing or replacing the right bottom cover.I

Take Apart Pedestal Covers - 14 4 If you need to take apart the left bottom cover, remove the two screws that secure it to the cassette feeder tray.

Basics Sensing System Theory - 4 Sensing System Theory There are six sensors in the Personal LaserWriter: four paper sensors and two printer-open se

Take Apart Cassette Feeder Roller Shaft - 15 Cassette Feeder Roller Shaft This topic applies to all models of the printer.Before you begin, remove t

Take Apart Cassette Feeder Roller Shaft - 16 1 Using a small screwdriver or grip-ring pliers, remove the E-rings at each end of the feeder roller sh

Take Apart Cassette Feeder Roller Shaft - 17 3 Remove the holding pin.4 Unhook the three plastic feeder roller clamps (rightmost clamp is shown).Fee

Take Apart Cassette Feeder Roller Shaft - 18 5 Slide the bushings off each end of the feeder roller shaft (opposite end not shown) and remove the s

Take Apart Cassette Pickup Roller Shaft - 19 Cassette Pickup Roller Shaft This topic applies to all models of the printer.Before you begin, remove t

Take Apart Cassette Pickup Roller Shaft - 20 1 Using a small screwdriver or grip-ring pliers, remove the E-rings at each end of the pickup roller sh

Take Apart Cassette Pickup Roller Shaft - 21 clutch assembly. The holding pin from the roller shaft will fall into your hand.

Take Apart Cassette Pickup Roller Shaft - 22 3 Slide the bushings off each end of the pickup roller shaft (opposite end not shown) and remove the sh

Take Apart Cassette Pickup Roller Shaft - 23 Replacement Note: When replacing the pickup roller shaft, give special care to the following:• Rotate

Take Apart Cassette Pickup Roller Shaft - 24 pickup roller clutch and the E-ring.• Adjust the setscrew so that the distance between the pickup rolle

Basics Sensing System Theory - 5 Paper sensors are actuated as an arm or lever swings against movement of paper. Printer-open sensors are actuated

Take Apart Cassette Feeder Board - 25 Cassette Feeder Board This topic applies to all models of the printer.Before you begin, remove the following:•

Take Apart Cassette Feeder Board - 26 1 Remove the four black screws that secure the cassette feeder board to the feeder tray.2 Disconnect connector

Take Apart I/O Board (SC, NT, NTR) - 27 I/O Board (SC, NT, NTR) This topic applies to the only SC, NT, and NTR models.Before you begin, remove the t

Take Apart I/O Board (SC, NT, NTR) - 28 1 Loosen the two screws that secure the I/O board to the shield.2 Handling the I/O board only by the metal b

Take Apart I/O Board (SC, NT, NTR) - 29 the ROMs and install them on the replacement board. Refer to “NTR ROM Upgrade” in Upgrades for complete inf

Take Apart I/O Shield (SC, NT, NTR) - 30 I/O Shield (SC, NT, NTR) This topic applies only to the SC, NT, and NTR models.Before you begin, remove the

Take Apart I/O Shield (SC, NT, NTR) - 31 1 Remove the five mounting screws and lift the I/O shield from the chassis.I/O Shield

Take Apart End Plate (SC, NT, NTR) - 32 End Plate (SC, NT, NTR) This topic applies only to the SC, NT, and NTR models.Before you begin, remove the f

Take Apart End Plate (SC, NT, NTR) - 33 1 Remove the four mounting screws and lift the end plate out of the chassis.End Plate

Take Apart I/O Shield (LS) - 34 I/O Shield (LS) This topic applies only to the LS model.Before you begin, remove the top cover.I/O Shield (LS)

PLW SC/NT/NTR/LS Basics - 6Photo InterrupterActuator Tab onToner CartridgePS11Toner Cartridge SensorActuator: Toner cartridge shutter flips intoposi

Take Apart I/O Shield (LS) - 35 1 Remove the seven screws that secure the I/O shield and lift the I/O shield from the printer.I/O Shield

Take Apart I/O Board (LS) - 36 I/O Board (LS) This topic applies only to the LS model.Before you begin, remove the following:• Top cover• I/O shield

Take Apart I/O Board (LS) - 37 1 Disconnect the cable from connector J803 on the I/O board.2 Remove the three screws that secure the I/O board in pl

Take Apart End Plate (LS) - 38 End Plate (LS) This topic applies only to the LS model.Before you begin, remove the following:• Top cover• I/O shield

Take Apart End Plate (LS) - 39 1 Remove the five mounting screws and lift the end plate out of the chassis.

Take Apart PCB Shield - 40 PCB Shield This topic applies only to the LS/L model.Before you begin, remove the top cover.PCB Shield

Take Apart PCB Shield - 41 1 Remove the two screws that secure the duct plate to the printer chassis. Lift out the duct plate.Duct Plate

Take Apart PCB Shield - 42 2 Remove the six screws that secure the PCB shield to the printer chassis. Lift out the PCB shield.PCB Shield

Take Apart Serial Controller - 43 Serial Controller This topic applies only to the LS/L model.Before you begin, remove the following:• Top cover• PC

Take Apart Serial Controller - 44 ± Warning: Never disconnect optical fiber cable J204 when the printer is powered on. Its invisible laser beam c

PLW SC/NT/NTR/LS Basics - 7PS12Delivery Unit Paper SensorActuator: Sensing lever housed in fuserassembly is tripped by paper exiting fuser.PhotoInte

Take Apart Serial Controller - 45 • High-voltage power supply cable from J206• Paper pickup sensor cable from J208• Fuser assembly cable from J209•

Take Apart Serial Controller - 46 2 Remove the four mounting screws and lift the board from its mounting plate.

Take Apart Serial Controller Mounting Plate - 47Serial Controller Mounting PlateThis topic applies only to the LS/L model.Before you begin, remove t

Take Apart Serial Controller Mounting Plate - 481 Disconnect the following cables from the serial controller board:• Laser assembly board cable from

Take Apart Serial Controller Mounting Plate - 49• Main motor cable from J210• DC power supply cable from J212• Fan-and-sensor board cable from J213•

Take Apart Serial Controller Mounting Plate - 503 Remove the six screws that secure the serial controller mounting plate to the chassis. Lift the mo

Take Apart Fan - 51FanThis topic applies to all models of the printer.Before you begin, remove the top cover.Fan

Take Apart Fan - 521 Remove the two fan mounting screws.2 Using small diagonal cutters, carefullly cut the tie-wrap that secures the fan cable.3 Disc

Take Apart Fan - 534 Unlatch the holding tab and lift out the fan bracket and the fan.Replacement Note: • Install the fan with the label facing out.

Take Apart Sensor Mounting Plate - 54Sensor Mounting PlateThis topic applies to all models of the printer.Before you begin, remove the top cover.Sens