Apple ImageWriter II/L Specifikace

Service Source K ImageWriter II/L

ImageWriter II/L Basics - 9 CPU and Gate Array The CPU (IC8) along with the gate array (IC4), handles the logic and decision-making of the printer. T

Take Apart Flexible Ribbon Cable - 461 Remove the ribbon cable from connector CN5 on the main board.2 Move the carrier assembly toward the right side

Take Apart Flexible Ribbon Cable - 473 Slightly lift up the front of the carrier assembly until you hear a snap.

Take Apart Flexible Ribbon Cable - 484 Caution: Do not force the flexible cable loose or you will damage the cable.Using a small screwdriver, gently

Take Apart Flexible Ribbon Cable - 495 Note: The cable may be glued to the bottom of the case. You may need to pry the cable loose.Push the carrier a

Take Apart Ribbon Motor Assembly - 50Ribbon Motor AssemblyBefore you begin, remove the following:• Covers• Carrier assemblyCaution: Review the ESD pr

Take Apart Ribbon Motor Assembly - 511 Note: Observe the position of the connector and the wires on the ribbon motor assembly.Remove the two mounting

Take Apart Ribbon Motor Assembly - 522 Remove the two mounting screws and remove the motor from the motor mount.

Take Apart Power Supply Board - 53Power Supply BoardBefore you begin, remove the following:• Covers• Mechanical assemblyCaution: Review the ESD preca

Take Apart Power Supply Board - 541 Slide the power supply board 1/8 inch to the left. 2 Pry back the two clips that hold the board to the bottom cas

Take Apart Power Supply Board - 55Ground Plate1 Remove the two screws from the AC plug receptacle, and remove the metal bracket.2 Remove the screw th

ImageWriter II/L Basics - 10 Line Feed The drive circuit is made up of transistors Q8, Q9, Q10, and Q11. Four drive signals from the gate array are p

Take Apart Power Supply Board - 56Replacement Note: When you replace a power supply board, you must remove the ground plate and the on/off switch cab

Take Apart Power Supply Board - 57On/Off Power Switch CableRemove the two screws from the on/off power switch cable. Lift the cable off the power sup

Take Apart Sub PCB Interface Board - 58Sub PCB Interface BoardBefore you begin, remove the following:• Covers• Mechanical assemblyCaution: Review the

Take Apart Sub PCB Interface Board - 591 Remove the screw.

Take Apart Sub PCB Interface Board - 602 Squeeze the two standoffs and push down.

Take Apart Sub PCB Interface Board - 613 Pry on one side and then the other side of connector CNS2, and remove the connector from the cut-sheet feede

Take Apart Sub PCB Interface Board - 62Replacement Note: If you are replacing the ribbon cable, disconnect the other end of the ribbon cable from con

Take Apart Line Feed Motor - 63Line Feed MotorBefore you begin, remove the following:• Covers• Mechanical assemblyCaution: Review the ESD precautions

Take Apart Line Feed Motor - 641 Disconnect connector CN1 from the main board.2 Cut the tie-wrap from the wires to the main board.

Take Apart Line Feed Motor - 653 Remove the two screws and gently pull the motor off the mechanical assembly.

ImageWriter II/L Basics - 11 Reset Circuit This circuit is used when the printer is turned on to keep the logic in a reset state until the voltages a

Take Apart Carrier Assembly - 66Carrier AssemblyBefore you begin, remove the following:• Mechanical assembly• Print head• Paper guide• Drive beltCaut

Take Apart Carrier Assembly - 671 Unhook the ribbon wire from both sides of the frame.

Take Apart Carrier Assembly - 682 Move the carrier assembly to the right so that the right edge of the carrier housing is lined up with the edge of t

Take Apart Carrier Assembly - 694 Using needlenose pliers, pry the metal finger toward the front of the printer.

Take Apart Carrier Assembly - 70Carrier Shaft1 Note: It might be easier if you remove the line feed motor before you remove the carrier shaft; howeve

Take Apart Carrier Assembly - 712 Remove the screw from the motor side.

Take Apart Carrier Assembly - 723 Using a small flat-blade screwdriver, push the tab backward and lift the left side of the carrier shaft free.

Take Apart Carrier Assembly - 734 Remove the carrier cam from the left side of the carrier shaft.Replacement Note: Install the carrier cam on the lef

Take Apart Carrier Assembly - 745 Slide the carrier shaft free of the carrier assembly. Remove the shaft and the felt wiper.Replacement Note: In orde

Take Apart Carrier Assembly - 75Paper DeflectorUnhook the three springs that hold the paper deflector to the frame. Remove the deflector.

Basics Sub PCB Board - 12 Sub PCB Board The sub PCB board acts as an interface board. The interface cable from the host CPU is plugged into the conn

Take Apart Print Head Board - 76Print Head BoardBefore you begin, remove the carrier assembly.Caution: Review the ESD precautions in Bulletins/Safety

Take Apart Print Head Board - 771 Remove the shaft and turn over the carrier.2 Remove the two screws that hold the print head board.

Take Apart Print Head Board - 783 To disconnect the board, gently lift the side of the board and pry it from ribbon motor connector CNH3. Remove the

Take Apart Shift Gear/Transfer Gears - 79Shift Gear/Transfer GearsBefore you begin, remove the following:• Mechanical assembly• Paper bail assembly•

Take Apart Shift Gear/Transfer Gears - 80Shift Gear AssemblyRemove the one screw and lift the shift gear assembly from the frame.

Take Apart Shift Gear/Transfer Gears - 81Transfer Gears1 Note: Use care in removing the “E” clip. The clip can fly off.Using a small screwdriver, a h

Take Apart Shift Gear/Transfer Gears - 822 Using a small screwdriver, a hook, or small needlenose pliers, remove the “E” clip from the smaller gear a

Take Apart Paper Bail Assembly - 83Paper Bail AssemblyBefore you begin, remove the mechanical assembly.Caution: Review the ESD precautions in Bulleti

Take Apart Paper Bail Assembly - 84Paper Bail1 Using a small screwdriver, pry out the paper release lever.2 Using small needlenose pliers, unhook the

Take Apart Paper Bail Assembly - 853 Unscrew and remove the right-side bracket.4 Unscrew and remove the left-side bracket.

Basics Sub PCB Board - 13 The paper-out sensor wires go to this board through CNS3 and are passed along to the main board.All the signals coming or

Take Apart Paper Bail Assembly - 865 Lift the paper bail, rotate it to the back position, and gently push down on the bail so it snaps off the stando

Take Apart Paper Bail Assembly - 87Platen Roller and Gears1 Lift out the platen.

Take Apart Paper Bail Assembly - 882 On the left side, slide off the black plastic bushing and remove the gear.

Take Apart Paper Bail Assembly - 893 On the right side, remove the black plastic bushing and the tension washer.4 Using a pin punch, gently tap out t

Take Apart Paper Bail Assembly - 90Tractor Assembly1 Remove the two screws on the cut-sheet feeder connector and brackets.2 Using a small screwdriver

Take Apart Paper Bail Assembly - 913 Repeat for the left side and pull the tractor assembly straight out of the rear of the mechanical assembly.

Take Apart Paper Bail Assembly - 92Pinch Roller Assembly1 Remove the two screws on the back of the pinch roller assembly.

Take Apart Paper Bail Assembly - 932 Using a flat-blade screwdriver, gently pry the roller assembly free from the five tabs.

Take Apart Paper Bail Assembly - 943 Pull up the front section of the pinch roller assembly until the assembly is loose and remove the connector CNS3

Take Apart Paper Bail Assembly - 954 Lift off the two pinch rollers and pinch roller springs.5 Push up on the small roller from underneath.

Basics Print Head Board - 14 Print Head Board The print head board receives the print head drive signals from the main board through CNH1. The signa

Take Apart Paper Bail Assembly - 96Paper -Out Sensor1 Turn over the assembly and gently lift the three paper sensor wires from the cut-outs on the ro

Service Source K Upgrades ImageWriter II/L

Upgrades Option Board - 1 Option Board Before you begin, remove the top cover. Caution: Review the ESD precautions in Bulletins/Safety.Option Board

Upgrades Option Board - 2 1 Remove the ground clip from the main board.2 Caution: Remove the option board carefully. Do not damage the main board.U

Service Source K Additional Procedures ImageWriter II/L

Additional Procedures Main Logic Board Fuse - 1 Main Logic Board Fuse Before you begin, remove the covers. Caution: Review the ESD precautions in B

Additional Procedures Main Logic Board Fuse - 2 1 Using a fuse puller, remove fuse FU1 from the main board.2 Replace blown fuses.Main BoardFuse FU1

Additional Procedures Power Supply Fuses - 3 Power Supply Fuses Before you begin, remove the following:• Covers• Mechanical assembly Caution: Revie

Additional Procedures Power Supply Fuses - 4 1 Using a fuse puller, remove fuse FU1 and FU2 from the power supply board.2 Replace blown fuses.FU1FU2

Additional Procedures Shims - 5 Shims Before you begin, remove the covers. Caution: Review the ESD precautions in Bulletins/Safety. Note: This pro

Basics Print Head Board - 15 This information is sent to the main board, which in turn sends controlling signals to the ribbon motor to control the

Additional Procedures Shims - 6 Note: Before performing the following procedures on shims, check the cam washer on the left side of the carrier sha

Additional Procedures Shims - 7 Gap Check 1 Pull the impression lever so that the dot head is in the closest position to the platen.ImpressionLever

Additional Procedures Shims - 8 Note: The recommended gap for the following readings should be .013 inches (0.33 mm) ±.002 inches (0.05 mm).2 Push

Additional Procedures Shims - 9 4 Push the carrier to the far left. Using a feeler gauge, measure the gap between the front of the print head and th

Additional Procedures Shims - 10 Install Shim 1 Select a shim that comes closest to the difference calculated.• 0.002 inch (0.05 mm)• 0.004 i

Additional Procedures Shims - 11 3 Release the carrier shaft.4 Verify that the gap is correct.ShimShim inCarrierBushingPlaceShaft

Additional Procedures Shims - 12 Remove Shim 1 Using needlenose pliers, remove the shim from the carrier shaft.2 If there is no shim installed, make

Additional Procedures Self-Test - 13 Self-Test No preliminary steps are required before you begin this procedure.1 Make sure the power is off. Load

Additional Procedures Self-Test - 14 Note: If you use a color ribbon, the test printout will alternate the colors of each line.The first part of th

Additional Procedures Self-Test - 15 3 To end the test, switch off the power. Note: If you accidentally depress the select button during power-up,

Basics Operation Panel Board - 16 Operation Panel Board The operation panel board has the switches (select, print quality, line feed, and form feed)

Additional Procedures Carrier Shaft Maintenance - 16 Carrier Shaft Maintenance Before you begin, remove the following:• Covers• Carrier assembly Cau

Additional Procedures Carrier Shaft Maintenance - 17 1 Using gauze or cotton, wipe off the carrier shaft.2 Apply four drops of light lubricating oil

Additional Procedures Dot Head Maintenance - 18 Dot Head Maintenance Before you begin, remove the following:• Covers• Print head Caution: Review th

Additional Procedures Dot Head Maintenance - 19 1 Using a lint-free cloth and isopropyl alcohol, clean the dot head.2 Perform the self-test.Print He

Service Source K Adjustments ImageWriter II/L

Adjustments Ribbon Cam - 1 Ribbon Cam No preliminary steps are required before you begin this procedure. Caution: Review the ESD precautions in Bul

Adjustments Ribbon Cam - 2 1 Run the self-test. See Additional Procedures. Note: If you use a color ribbon, the self-test should produce one line o

Adjustments Ribbon Cam - 3 2 Switch off the printer and remove the paper cover.Paper Cover

Adjustments Ribbon Cam - 4 3 Examine the self-test printout. The first line should be black. If the bottom halves of the letters are missing, turn t

Adjustments Ribbon Cam - 5 4 Note: Use the following procedure for systems with the locking nut. Loosen the lock nut on the ribbon cam.LockNutKnurl

Basics Operation Panel Board - 17 The switch button just passes through to the switch mounted on the main frame underneath the operation panel.Opera

Adjustments Ribbon Cam - 6 5 Examine the self-test printout. The first line should be black. If the bottom halves of the letters are missing, turn t

Adjustments Ribbon Cam - 7 7 Run the self-test and examine the printout.Repeat the adjustment of the ribbon cam until the self-test prints correctly

Adjustments Firing Hammer - 8 Firing Hammer No preliminary steps are required before you begin this procedure. Caution: Review the ESD precautions

Adjustments Firing Hammer - 9 1 Print a few lines of the capital letter “H.”2 Check the printed letters for misalignment.

Adjustments Firing Hammer - 10 3 Note: Change only one switch at a time.If the letters are misaligned, remove the covers. Using a small screwdriver

Adjustments Impression Lever - 11 Impression Lever Before you begin, remove the covers. Caution: Review the ESD precautions in Bulletins/Safety.Imp

Adjustments Impression Lever - 12 1 Note: The impression lever moves the print head away from or closer to the platen.Adjust the position of the le

Adjustments Impression Lever - 13 2 Note: If the print is still too light or too dark after you have moved the impression lever, adjust the screw.I

Adjustments Drive Belt - 14 Drive Belt Before you begin, remove the following:• Covers• Carrier assembly top plate• Ribbon cam and gears Caution: R

Adjustments Drive Belt - 15 1 Loosen the adjustments screw.2 Using a screwdriver, push the carrier pulley arm to the right.3 Hold the pulley arm in

Basics Operation Panel - 18 Operation Panel The operation panel consists of operating switches and indicator lights. The operating switches are the

Adjustments Paper Guide - 16 Paper Guide Before you begin, remove the covers. Caution: Review the ESD precautions in Bulletins/Safety.Paper Guide

Adjustments Paper Guide - 17 1 Slide the impression lever all the way forward.ImpressionLever

Adjustments Paper Guide - 18 2 Loosen the two screws and slide the paper guide forward or backward until the gap is the correct width (approximately

Adjustments Paper Guide - 19 4 Roll two sheets of paper under the platen. The paper guide should be snug with little or no movement toward the plate

Exploded View 1Line FeedMotorSub PCBInterfaceBoardPower SupplyBoardMain BoardFlexibleRibbon CableDrive Belt/Carrier MotorRibbon Wireand GearsPaper

Basics Introduction - 1 Introduction The electrical operation of the printer consists of five printed circuit boards, three motors, and several swit

Basics Operation Panel - 19 Operating Switches Power Switch - The power switch turns the printer on and off.Power Switch

Basics Operation Panel - 20 Select Switch - The select switch toggles the printer between a selected (online) and a deselected (off-line) state. If

Basics Operation Panel - 21 If you want to clear the buffer, you must turn off the printer. Pressing the select switch also clears a corrected error

Basics Operation Panel - 22 Print Quality Switch - The print quality switch allows the user to choose one of three printing modes. Pressing the pri

Basics Operation Panel - 23 Form Feed - The form feed switch does not function unless the printer is in an off-line (deselected) state. When the fo

Basics Operation Panel - 24 If the switch is pressed and no paper is present, the printer assumes a single sheet is being loaded. The printer feeds

Basics Operation Panel - 25 For the single sheet case, four inches of paper motion is added to the form feed to ensure that the page is properly eje

Basics Operation Panel - 26 When an automatic cut-sheet feeder is present, the paper-loading sequence is slightly different. When the form feed is p

Basics Operation Panel - 27 Indicators Power - When lit, the power light indicates that power is on. Select - When the select indicator is lit, th

Basics Operation Panel - 28 Print Quality - The print quality light indicates three modes of operation:• NLQ–When both the left and right indicator

Basics Introduction - 2 The three motors are the carrier motor, line feed motor, and the ribbon position motor. Switches are the home position switc

Basics Operation Panel - 29 • Standard–If the right indicator is lit, the printer is in the Standard print mode. This is the default mode when the p

Basics Operation Panel - 30 Error - The error light has three ways of indicating an error condition in the printer:• If the error light comes on st

Basics Operation Panel - 31 • If the light blinks in a repeating sequence of one short blink and a long blink, an interface communication or a RAM c

Service Source K Specifications ImageWriter II/L

Specifications Characteristics - 1 Characteristics Print Methods Draft Mode: 250 characters per second (cps); 25 in. per second (ips) at 10 characte

Specifications Characteristics - 2 Life Standard: 4 by 108 strokes/wireJapan: 2 by 108 strokes/wire Graphics Duty Cycle 25% minimum Character Se

Specifications I/O Interfaces - 3 I/O Interfaces Interface Standard asynchronous LocalTalk With option board Operation Asynchronous, switch selectab

Specifications I/O Interfaces - 4 Transmission Speed Switch selectable (300, 1200, 2400, and 9600 baud) Input Buffer 254K

Specifications Paper Feed - 5 Paper Feed Method Friction feed, adjustable tractors, and automatic single-sheet loader Accessories Automatic, cut-she

Specifications Electrical - 6 Electrical Line Voltage USA/Japan: 85–132 VAC; 48–62 HzEurope/Australia: 185–265 VAC; 48–62 HzStand-by:20 W maximumOpe

Basics Power Supply - 3 Power Supply The ImageWriter II/L has a switching type power supply that eliminates the need for a bulky transformer. When t

Specifications Physical - 7 Physical Dimensions Height: 5 in.Width: 17 in.Depth: 12 in. Weight 25 lb. maximum

Specifications Environmental - 8 Environmental Temperature Operation:10–40°CStorage: (one year) –40 to 47°CTransit: (72 hours) –40 to 65°C Relative

Service Source K Troubleshooting ImageWriter II/L

Troubleshooting General/ - 1 General The Symptom Charts included in this chapter will help you diagnose specific symptoms related to your product. B

Troubleshooting Symptom Charts /Preliminary Check - 2 Symptom Charts Preliminary Check Error light blinks 1 Verify that paper cover is secure.2 Veri

Troubleshooting Symptom Charts /Preliminary Check - 3 No printing or garbled printing1 Check interface cable connection between printer and computer

Troubleshooting Symptom Charts/Preliminary Check - 4 Erratic carrier motion, loud humRemove black tube-shaped shipping protection from carrier shaft

Troubleshooting Symptom Charts /Print Quality - 5 Print Quality Compressed first or second line1 Check position of paper behind printer to ensure th

Troubleshooting Symptom Charts/Print Quality - 6 Missing dots 1 Check flexible cable connection.2 Remove dot head and verify that pins in connector

Troubleshooting Symptom Charts /Carriage Movement - 7 Carriage Movement Carriage doesn’t move; LEDs are not lit1 Replace main board.2 Replace power

Basics Power Supply - 4 The + 5 and –5 V DC voltages are for logic; the + 26 V DC is for motor drive. All the voltages are fed from connector CN5 on

Troubleshooting Symptom Charts/Carriage Movement - 8 Carriage moves to the left and hums very loudly1 Verify that flexible ribbon cable is properly

Troubleshooting Symptom Charts/Carriage Movement - 9 Self-test produces no carrier movement (LEDs are lit)1 Remove mechanical assembly to ensure tha

Troubleshooting Symptom Charts/Paper Feed - 10 Paper Feed Grinding during paper feed1 Remove platen knob to verify that there are no obstructions in

Troubleshooting Symptom Charts/Miscellaneous - 11 Miscellaneous Hexadecimal data printsPower printer off and then on.Power supply goes bad repeatedl

Service Source K Take Apart ImageWriter II/L

Take Apart Covers - 1 Covers No preliminary steps are required before you begin this procedure. Caution: Review the ESD precautions in Bulletins/Sa

Take Apart Covers - 2 Paper Cover Note: The paper cover assembly must be in place for the printer to work. Gently pull the paper cover up and forwa

Take Apart Covers - 3 Ribbon Cartridge Gently pull the tabs apart and lift the cartridge out.Ribbon CartridgeTabTab

Take Apart Covers - 4 Top Cover 1 Push the carrier assembly to the far left.2 Pull off the platen knob. 3 Loosen the two captive screws.PlatenCaptiv

Take Apart Covers - 5 4 Grasp the top cover on the left at the part that goes over the leg. 5 Release the latch and lift the cover one inch.LatchTop

Basics Power Supply - 5 The power supply has two fuses to help protect the electronics—FU1 is a 120 V 2-amp fuse and FU2 is a 125 V 4–amp fuse. Note

Take Apart Covers - 6 6 Gently rotate the cover toward the front and turn the cover over.7 Using your thumb and forefinger, unlock connector CN7 and

Take Apart Covers - 7 Tractor Cover Gently pull the tractor cover up and forward until the cover snaps free.Tractor Cover

Take Apart Operation Panel - 8 Operation Panel Before you begin, remove the covers. Caution: Review the ESD precautions in Bulletins/Safety.Operati

Take Apart Operation Panel - 9 1 Remove the three screws and lift the operation panel board from the top cover.2 Disconnect the cable from the opera

Take Apart Operation Panel - 10 3 Note : To make reinstallation easier, observe the position of the power switch plunger and spring.Remove the sprin

Take Apart Main Board - 11 Main Board Before you begin, remove the following:• Covers• Option board Caution: Review the ESD precautions in Bulletin

Take Apart Main Board - 12 1 Disconnect the three cable connectors from the left side of the main board:• CN1• CN2• CN3Right-Main Board

Take Apart Main Board - 13 2 Remove the six screws.3 Tilt the front half of the board up and gently lift the board partially out. Replacement Note:

Take Apart Main Board - 14 4 Caution: Make sure you release both sides of the connector before you pull out the ribbon cable.Using a small screwdri

Take Apart Print Head and Paper Guide - 15 Print Head and Paper Guide Before you begin, remove the covers. Caution : Review the ESD precautions in B

Basics Power Supply - 6 The on/off power switch is connected to the power supply board and disconnects or connects the main AC current to the board.

Take Apart Print Head and Paper Guide - 16 Print Head 1 Lift the paper bail to its highest position.2 Set the paper thickness lever to its widest se

Take Apart Print Head and Paper Guide - 17 3 Gently push and hold aside the white print head clamp release lever and slowly lift the print head stra

Take Apart Print Head and Paper Guide - 18 Paper Guide Remove the two screws and lift out the paper guide. Replacement Note: Adjust the paper guide

Take Apart Ribbon Cam Assembly - 19 Ribbon Cam Assembly Before you begin, remove the covers. Caution : Review the ESD precautions in Bulletins/Safet

Take Apart Ribbon Cam Assembly - 20 1 Unscrew the plastic cap from the ribbon cam. 2 Remove the red adjustment ring and the spring.3 Remove the plas

Take Apart Ribbon Cam Assembly - 21 4 Note : For versions with the hex nut, remove the nut and proceed with the rest of the procedure.Using small ne

Take Apart Ribbon Cam Assembly - 22 6 Turn and lift off the ribbon cam.7 Remove the spring.

Take Apart Ribbon Cam Assembly - 23 Replacement Note: When you replace the cam, set the cam at its lowest setting. Verify that the two tabs of the

Take Apart Carrier Assembly Top Plate - 24 Carrier Assembly Top Plate Before you begin, remove the covers. Caution : Review the ESD precautions in B

Take Apart Carrier Assembly Top Plate - 25 1 Caution : Do not use force when you remove the black plastic arms. You will break them.Using a small fl

Basics Main Board - 7 Main Board The main board is the heart of the printer. Besides handling the distribution of the voltages, it also handles all

Take Apart Carrier Assembly Top Plate - 26 4 Gently pull the plastic bearing straight out and remove the small washer.5 Repeat for the right side. R

Take Apart Carrier Assembly Top Plate - 27 6 Gently pry the top of the wire clamp from the carrier assembly and remove the color ribbon detect switc

Take Apart Carrier Assembly Top Plate - 28 7 Using a jeweler’s screwdriver, push the gear assembly tabs toward the center of the ribbon plate and li

Take Apart Carrier Assembly Top Plate - 29 Color Ribbon Detect Switch 1 Note: Do not bend the plastic tabs that hold the wires.Carefully pry the w

Take Apart Carrier Assembly Top Plate - 30 2 Turn over the top plate. Using a small screwdriver, gently pry the four latches and at the same time pu

Take Apart Ribbon Wire and Gears - 31 Ribbon Wire and Gears Before you begin, remove the following:• Covers• Carrier assembly top plate Caution : Re

Take Apart Ribbon Wire and Gears - 32 1 Unhook the ribbon wire from the right side of the frame, and then from the left side of the frame. Remove th

Take Apart Ribbon Wire and Gears - 33 2 Lift the gear assembly from the carrier housing. Replacement Note: Perform the self-test. Replacement Note:

Take Apart Drive Belt/Carrier Motor - 34 Drive Belt/Carrier Motor Before you begin, remove the covers. Caution : Review the ESD precautions in Bulle

Take Apart Drive Belt/Carrier Motor - 35 Drive Belt 1 Loosen the screw on the pulley tension plate. Do not remove the screw.2 Using a large screwdri

ImageWriter II/L Basics - 8 ROM The ROM (IC10) chip has the start-up routines and several features such as character sets and self-test routines buil

Take Apart Drive Belt/Carrier Motor - 36 3 Remove the drive belt from the left-side pulley.

Take Apart Drive Belt/Carrier Motor - 37 4 Remove the screw from the retaining clip.5 Using a small flat-blade screwdriver, pry up the retaining cli

Take Apart Drive Belt/Carrier Motor - 38 Carrier Motor Remove the three screws that secure the carrier motor and remove the carrier motor. Replaceme

Take Apart Mechanical Assembly - 39 Mechanical AssemblyBefore you begin, remove the covers.Caution: Review the ESD precautions in Bulletins/Safety.

Take Apart Mechanical Assembly - 401 Remove the six screws that hold the mechanical assembly to the bottom case.Note: Do not remove screw A at the ba

Take Apart Mechanical Assembly - 41Replacement Note: Two screws make the ground connection between the power supply plate and the rest of the mechani

Take Apart Mechanical Assembly - 422 Remove the two screws that hold the power switch cable in place.3 If the main board is in the printer, disconnec

Take Apart Mechanical Assembly - 434 Grasp the middle of the back tractor bar. With the other hand hold the middle of the support wall and lift the e

Take Apart Mechanical Assembly - 44Replacement Note: As you lower the assembly into place, make sure to route the power supply cable correctly and to

Take Apart Flexible Ribbon Cable - 45Flexible Ribbon CableBefore you begin, remove the following:• Covers• Mechanical assembly• Carrier assembly top