Apple Color LaserWriter 12/600 PS ation User Manual

Steve Rancourt 5/95 Color LaserWriter 12/600 PS and 12/660 PSService Technical Documentation This document was created with FrameMaker 4.0.4

96.11.13.15.58 Color LaserWriter 12/660 PS 3–7 the default protocol for the parallel port (TBCP) was changed to Normal and not returned back to T

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–89Outline When the /PRNT signal is sent to the DC controller by the I/O controlle

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–90Paper Pickup Cassette Feeding When the print sequence command is received, the

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–91 The three sensors described below govern paper feed from the cassette. PS30

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–92Multifeed Prevention Mechanism For cassette feeding, the printer uses the separ

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–93Manual Feeding The presence of paper in the manual feed tray is detected by the

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–94Paper Size The paper size in the cassette is detected by the cassette size-sen

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–95For the universal cassette, the actuators that press the cassette size-sensing

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–96Overhead Transparency Detection When you use overhead transparency material for

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–97Cassette Pickup Board The cassette pickup board carries out serial communicatio

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–98PS2LEDDRVManual Feed Paper-Present SensorPaper Leading-Edge Sensor+5VIC301IC302

96.11.13.15.58 Color LaserWriter 12/660 PS 3–8 Installation Reimbursement Program Beginning October 21, 1996, Authorized Apple Resellers and inst

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–99Pickup Motor Drive Circuit The pickup motor is a two-phase stepping motor locat

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–100Transfer Drum and Peripherals Outline The transfer drum is the mechanism that

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–101When the paper cued at the paper leading-edge sensor (PS303) begins feeding, t

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–102Gripper Control The opening and closing of the gripper are controlled by the g

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–103Attraction Roller The attraction roller is normally separated from the transfe

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–104The attraction roller is not driven by any motor, but rotates along with the t

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–105Separation Upon completion of the transfer, the gripper solenoid (SL4) is tur

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–106Transfer Drum Cleaning Assembly The transfer drum cleaning assembly is operate

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–107Discharge Roller The discharge roller is normally pushed up by the discharge r

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–108Drum Motor Drive Circuit The drum motor is a two-phase stepping motor controll

95.08.23.11.28 1 Basics and Theory

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–109Cleaning Brush Motor Drive Circuit The cleaning brush motor is a DC brushless

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–110Fuser Assembly Outline The paper separated from the transfer drum is fed into

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–111When the registration position for the fourth color in the full-color mode or

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–112Transparency Mode The fusing characteristics of overhead transparencies are po

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–113Fuser Temperature Control The fuser temperature is detected by the thermistor

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–114The printer starts to raise the fuser temperature while it is in the wait peri

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–115Fuser Assembly Errors In order to prevent the fuser heater from malfunctioning

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–116Fuser Error A:DC ControllerDetects aFuser HeaterError If the fuser assembly is

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–117• When the THI signals are compared after changing the sensitivity of the ther

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–118Fuser Error B:Fuser SafetyCircuit DetectsErrorThe fuser heater safety circuit

95.08.23.11.28 Color LaserWriter 12/600 PS Basics & Theory 1–2 Chapter Contents I General Information Features ...

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–119The safety circuit IC (Z4) in the power supply unit monitors the fuser tempera

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–120Fuser Error C:AbnormalityDetectionCircuit Error Located in the power supply u

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–121Notes:1 When starting the temperature control, the printer individually turns

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–122Oil Circulation System In order to prevent the tracking of toner onto the fuse

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–123If the CPU on the DC controller detects that oil is low, it issues an oil-low

95.08.23.11.31Color LaserWriter 12/600 PS Basics & Theory 1–124Fuser Cleaner AssemblyThe printer uses a cleaning assembly to clean the upper

95.08.23.11.31Color LaserWriter 12/600 PS Basics & Theory 1–125Main Motor Drive Circuit Outline The main motor is a DC brushless motor contr

95.08.23.11.31Color LaserWriter 12/600 PS Basics & Theory 1–126Paper Jam Detection Outline The following paper sensors are provided to detect

95.08.23.11.31Color LaserWriter 12/600 PS Basics & Theory 1–127Pickup Delay Jam The CPU determines that a pickup delay jam has occurred if th

95.08.23.11.31Color LaserWriter 12/600 PS Basics & Theory 1–128Paper Top Position Delay Jam The CPU determines that a paper top position dela

95.08.23.11.28 Color LaserWriter 12/600 PS Basics & Theory 1–3 V Pickup/Feed System Outline ...

95.08.23.11.31Color LaserWriter 12/600 PS Basics & Theory 1–129Grip Jam The CPU determines that a grip jam has occurred if the attraction se

95.08.23.11.31Color LaserWriter 12/600 PS Basics & Theory 1–130Separation Delay Jam The CPU determines that a separation delay jam has occurr

95.08.23.11.31Color LaserWriter 12/600 PS Basics & Theory 1–131Separation Stationary Jam The CPU determines that a separation stationary jam

95.08.23.11.31Color LaserWriter 12/600 PS Basics & Theory 1–132Delivery Delay Jam The CPU determines that a delivery delay jam has occurred i

95.08.23.11.31Color LaserWriter 12/600 PS Basics & Theory 1–133Delivery Stationary JamThe CPU determines that a delivery stationary jam has o

95.08.23.11.31Color LaserWriter 12/600 PS Basics & Theory 1–134Multifed Paper Stationary Jam The CPU determines that a multifed paper station

95.08.23.11.31Color LaserWriter 12/600 PS Basics & Theory 1–135Nondedicated Transparency Jam The CPU determines that a nondedicated transpare

95.08.23.11.31Color LaserWriter 12/600 PS Basics & Theory 1–136Wrong Paper Length Feed Jam The CPU detects the paper size with the paper lead

95.08.23.11.31Color LaserWriter 12/600 PS Basics & Theory 1–137Initial Residual Jam The CPU determines that an initial residual jam has occur

95.08.23.11.31Color LaserWriter 12/600 PS Basics & Theory 1–138 VI. System Interface

95.08.23.11.28 Color LaserWriter 12/600 PS Basics & Theory 1–4 I. General Information

95.08.23.11.31Color LaserWriter 12/600 PS Basics & Theory 1–139Outline The I/O controller in the printer converts the print data sent by exte

95.08.23.11.31Color LaserWriter 12/600 PS Basics & Theory 1–140Video Interface I/O Interface Signals The I/O interface signals are as illustr

95.08.23.11.31Color LaserWriter 12/600 PS Basics & Theory 1–141The DC controller generates 8-bit video data signals (DV2-DV9) in accordance w

95.08.23.11.31Color LaserWriter 12/600 PS Basics & Theory 1–142 VII. Power Supply

95.08.23.11.31Color LaserWriter 12/600 PS Basics & Theory 1–143Outline The power switch uses a remote switch method. When the power switch (

95.08.23.11.31Color LaserWriter 12/600 PS Basics & Theory 1–144When the front door, the fuser access cover, and the pickup cover are closed,

95.08.23.11.31Color LaserWriter 12/600 PS Basics & Theory 1–145Remote Switch When the power switch on the printer is turned off, the power su

95.08.23.11.31Color LaserWriter 12/600 PS Basics & Theory 1–146VIII. Sheet Feeder

95.08.23.11.31Color LaserWriter 12/600 PS Basics & Theory 1–147Outline of Electrical Circuit The sheet feeder is electrically controlled by t

95.08.23.11.31Color LaserWriter 12/600 PS Basics & Theory 1–148Sheet Feeder Controller Board Input/Output Mechanical Controller Board(in Prin

95.08.23.11.28 Color LaserWriter 12/600 PS Basics & Theory 1–5 Features Some of the main features of the Color LaserWriter 12/600 PS are as

95.08.23.11.31Color LaserWriter 12/600 PS Basics & Theory 1–149Pickup/Feed System Outline The sheet feeder pickup roller is driven by the sh

95.08.23.11.31Color LaserWriter 12/600 PS Basics & Theory 1–150Power Supply The power supply for the sheet feeder consists of +24 VDC generat

98.05.08.09.00 2 Troubleshooting

98.05.08.09.00 Color LaserWriter 12/600 PS Troubleshooting 2–2 Using This Chapter This chapter is divided into four sections.I Preparation

98.05.08.09.00 Color LaserWriter 12/600 PS Troubleshooting 2–3 I. Preparation and Tips

98.05.08.09.00 Color LaserWriter 12/600 PS Troubleshooting 2–4 Troubleshooting Checklist Before troubleshooting the printer, make sure that

98.05.08.09.00 Color LaserWriter 12/600 PS Troubleshooting 2–5 Tools Required The following tools are required for servicing the Color Lase

98.05.08.09.00 Color LaserWriter 12/600 PS Troubleshooting 2–6 Verifying Printer Operation To observe an operational engine, place the prin

98.05.08.09.00 Color LaserWriter 12/600 PS Troubleshooting 2–7 The printer in validation state is its own best instructional and training a

98.05.08.09.00 Color LaserWriter 12/600 PS Troubleshooting 2–8 1234567891011121313121110987654321LEDONGNDATTSNS/GRIPON24VALEDONGNDSEPSNS/S

96.09.11.09.27 Color LaserWriter 12/600 PS Basics & Theory 1–6 Specifications Marking Engine Canon HX LBP print engine• 3 ppm in color; 12 pp

98.05.08.09.00 Color LaserWriter 12/600 PS Troubleshooting 2–9 J357SLJ354MJ353J359Pickup SensorPS352J358J352+24VA/OPFED/BOBO/AOAOCBCAOPSNS

98.05.08.09.00 Color LaserWriter 12/600 PS Troubleshooting 2–10 Roller Diameters General Horizontal print defects that occur repetitively o

98.05.08.09.00 Color LaserWriter 12/600 PS Troubleshooting 2–11 II. Startup Tests and Diagnostics

98.05.08.09.00 Color LaserWriter 12/600 PS Troubleshooting 2–12 Startup Tests When you switch on power, all the status panel lights illumin

98.05.08.09.00 Color LaserWriter 12/600 PS Troubleshooting 2–13 Extended POST(EPOST) Some error conditions that stop printer operation cann

98.05.08.09.00 Color LaserWriter 12/600 PS Troubleshooting 2–142Error Designation++++++++++++++++++++++++++++++++++++10102104321032210Main

98.05.08.09.00 Color LaserWriter 12/600 PS Troubleshooting 2–15ErrorDesignationMaintenanceLightsAccessLightsTonerLights++++++++++++++++++++

98.05.08.09.00 Color LaserWriter 12/600 PS Troubleshooting 2–16MaintenanceLightsAccessLightsTonerLights++++++++++++++++++Paper Delivery Jam

98.05.08.09.00 Color LaserWriter 12/600 PS Troubleshooting 2–17 POST CodesNotes The notes below correspond to the “POST Codes Matrix” earli

98.05.08.09.00 Color LaserWriter 12/600 PS Troubleshooting 2–18 If the connectors are secure, remove the fuser assembly and measure continu

95.08.23.11.28 Color LaserWriter 12/600 PS Basics & Theory 1–7 Printer Fonts The following fonts are resident in the printer ROM:• AvantGard

98.05.08.09.00 Color LaserWriter 12/600 PS Troubleshooting 2–19 If you do not have a mirror, you can remove the two screws and the black tr

98.05.08.09.00 Color LaserWriter 12/600 PS Troubleshooting 2–20 Note 10 The DC controller has detected incorrect timing at carousel positio

98.05.08.09.00 Color LaserWriter 12/600 PS Troubleshooting 2–21 Note 14 The DC controller has detected an I/O controller fan error. On sit

98.05.08.09.00 Color LaserWriter 12/600 PS Troubleshooting 2–22 Diagnostic Utility Outline The Color LaserWriter Service Utility is a stand

98.05.08.09.00 Color LaserWriter 12/600 PS Troubleshooting 2–23 III. Flowchart Troubleshooting

98.05.08.09.00 Color LaserWriter 12/600 PS Troubleshooting 2–24 Flowchart AYESNONOYESYESDo anyfans/motors/LEDscome on indicating that power

98.05.08.09.00 Color LaserWriter 12/600 PS Troubleshooting 2–25 Flowchart BYESNo power is getting into the printer.NODid theproblem first a

98.05.08.09.00 Color LaserWriter 12/600 PS Troubleshooting 2–26 Flowchart CNONONONOYESYESAre any ofthe three error lightsilluminating or fl

98.05.08.09.00Color LaserWriter 12/600 PS Troubleshooting 2–27Flowchart DThe printer comes ready butsecondary lights are illuminating.Is the

98.05.08.09.00Color LaserWriter 12/600 PS Troubleshooting 2–28Flowchart EThe printer came ready butdid not print the startup page(s).The sta

95.08.23.11.28 Color LaserWriter 12/600 PS Basics & Theory 1–8 Speed Prints 12 pages per minute in monochrome; 3 pages per minute maximum in

98.05.08.09.00Color LaserWriter 12/600 PS Troubleshooting 2–29Flowchart FThe printer comes ready andprints the startup page(s) okay,but ther

98.05.08.09.00Color LaserWriter 12/600 PS Troubleshooting 2–30IV. Symptom-Driven Troubleshooting

98.05.08.09.00Color LaserWriter 12/600 PS Troubleshooting 2–31Miscellaneous Issues1 The front door opens too easily.When you open and close

98.05.08.09.00Color LaserWriter 12/600 PS Troubleshooting 2–326 Printer empties paper tray of paper. Output is blank.Restart the printer and

98.05.08.09.00Color LaserWriter 12/600 PS Troubleshooting 2–33Print Quality IssuesThis topic addresses general print quality defects that ca

98.05.08.09.00Color LaserWriter 12/600 PS Troubleshooting 2–34To minimize this effect, try to avoid large flat areas of color, as they will m

95.08.23.09.16 3 Take Apart

95.08.23.09.16 Color LaserWriter 12/600 PS Take Apart 3–2 List of Procedures General The following pages describe take-apart procedures for the C

95.08.23.09.16 Color LaserWriter 12/600 PS Take Apart 3–3 About Solenoids...

95.08.23.09.16 Color LaserWriter 12/600 PS Take Apart 3–4 Toner Disposal Box (page 1 of 3) First No first steps are required. Note : This part is

About Printing : Always use these numbers when printing About Graphics : Using the magnifier tool enables you to zoominto graphics and see greater d

95.08.23.11.28 Color LaserWriter 12/600 PS Basics & Theory 1–9 Dimensions Height: 18 in. (46 cm)Width: 21 in. (54 cm)Depth: 23 in. (58 cm

95.08.23.09.16 Color LaserWriter 12/600 PS Take Apart 3–5 Toner Disposal Box (page 2 of 3) Now 1 Open the front door. Lower the transfer drum le

95.08.23.09.16 Color LaserWriter 12/600 PS Take Apart 3–6 Toner Disposal Box (page 3 of 3)2 Pull the toner disposal box from the printer. Remove

95.08.23.09.16 Color LaserWriter 12/600 PS Take Apart 3–7 Photoconductor Cartridge (page 1 of 2) First Remove the toner disposal box and toner ca

95.08.23.09.16 Color LaserWriter 12/600 PS Take Apart 3–8 Photoconductor Cartridge (page 2 of 2) Now Place the end of the photoconductor tray on

95.08.23.09.16 Color LaserWriter 12/600 PS Take Apart 3–9 Fuser Access Cover (page 1 of 2) First No first steps are required. Now 1 Open the front

95.08.23.09.16 Color LaserWriter 12/600 PS Take Apart 3–10 Fuser Access Cover (page 2 of 2)2 Slide the fuser access cover leftward out of its hin

95.08.23.09.16 Color LaserWriter 12/600 PS Take Apart 3–11 Fuser Oil Bottle (page 1 of 2) First No first steps are required. Now Open the front do

95.08.23.09.16 Color LaserWriter 12/600 PS Take Apart 3–12 Fuser Oil Bottle (page 2 of 2) Note : There is a mechanism in the lid of the bottle t

95.08.23.09.16 Color LaserWriter 12/600 PS Take Apart 3–13 Fuser Assembly (page 1 of 3) First Remove the fuser access cover and fuser oil bottle.

95.08.23.09.16 Color LaserWriter 12/600 PS Take Apart 3–14 Fuser Assembly (page 2 of 3)2 Grasp the two knobs and slide the fuser assembly outward

95.08.23.11.28 Color LaserWriter 12/600 PS Basics & Theory 1–10 Safety Information Laser Safety The invisible laser beam irradiated within t

95.08.23.09.16 Color LaserWriter 12/600 PS Take Apart 3–15 Fuser Assembly (page 3 of 3)3 Grasp the two green handles and remove the fuser assembl

95.08.23.09.16 Color LaserWriter 12/600 PS Take Apart 3–16 Fuser Oil Extraction (page 1 of 5) First Remove the fuser access cover, fuser oil bott

95.08.23.09.16 Color LaserWriter 12/600 PS Take Apart 3–17 Fuser Oil Extraction (page 2 of 5)Under normal conditions, you need only extract the o

95.08.23.09.16 Color LaserWriter 12/600 PS Take Apart 3–18 Fuser Oil Extraction (page 3 of 5) Now Extraction from the oil reservoir:1 Place the t

95.08.23.09.16 Color LaserWriter 12/600 PS Take Apart 3–19 Fuser Oil Extraction (page 4 of 5)Extraction from the overflow pan:An oil overflow condi

95.08.23.09.16 Color LaserWriter 12/600 PS Take Apart 3–20 Fuser Oil Extraction (page 5 of 5)3 Insert the syringe into the center ring of the wel

95.08.23.09.16 Color LaserWriter 12/600 PS Take Apart 3–21 Paper Pickup Block Removal (page 1 of 2) First No first steps are required.This procedu

95.08.23.09.16 Color LaserWriter 12/600 PS Take Apart 3–22 Paper Pickup Block Removal (page 2 of 2)2 Remove the two silver-colored screws and met

95.08.23.09.16 Color LaserWriter 12/600 PS Take Apart 3–23 Paper Pickup Block Disassembly (page 1 of 11) First Remove the paper pickup block.The

95.08.23.09.16 Color LaserWriter 12/600 PS Take Apart 3–24 Paper Pickup Block Disassembly (page 2 of 11)Paper Pickup BlockDoor-Closing SpringGrou

95.08.23.11.28 Color LaserWriter 12/600 PS Basics & Theory 1–11 Status Panel Outline The Color LaserWriter 12/600 PS status panel consists o

95.08.23.09.16 Color LaserWriter 12/600 PS Take Apart 3–25 Paper Pickup Block Disassembly (page 3 of 11) Now 1 Remove the door-closing spring and

95.08.23.09.16 Color LaserWriter 12/600 PS Take Apart 3–26 Paper Pickup Block Disassembly (page 4 of 11)2 Open the manual feed tray and remove th

95.08.23.09.16 Color LaserWriter 12/600 PS Take Apart 3–27 Paper Pickup Block Disassembly (page 5 of 11)3 The pickup block cover is held in place

95.08.23.09.16 Color LaserWriter 12/600 PS Take Apart 3–28 Paper Pickup Block Disassembly (page 6 of 11)4 Separate the width guide from the multi

95.08.23.09.16 Color LaserWriter 12/600 PS Take Apart 3–29 Paper Pickup Block Disassembly (page 7 of 11)5 Remove the two brass-colored screws tha

95.08.23.09.17 Color LaserWriter 12/600 PS Take Apart 3–30 Paper Pickup Block Disassembly (page 8 of 11)6 Remove the E-ring that secures the hing

95.08.23.09.17 Color LaserWriter 12/600 PS Take Apart 3–31 Paper Pickup Block Disassembly (page 9 of 11)7 Remove the two brass-colored screws and

95.08.23.09.17 Color LaserWriter 12/600 PS Take Apart 3–32 Paper Pickup Block Disassembly (page 10 of 11)8 Disconnect the two connectors from the

95.08.23.09.17 Color LaserWriter 12/600 PS Take Apart 3–33 Paper Pickup Block Disassembly (page 11 of 11)9 Remove the silver-colored screw that s

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–34Cassette Pickup AssemblyPerform the “Paper Pickup Block Disassembly” procedure. After spl

95.08.23.11.29 Color LaserWriter 12/600 PS Basics & Theory 1–12MCYBkMCYBkWarming Up /ProcessingPrinter ReadyLow MagentaLow CyanLow YellowLow

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–35Multipurpose Pickup Assembly (page 1 of 2)First Remove and disassemble the paper pickup bl

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–36Multipurpose Pickup Assembly (page 2 of 2)Now With a flat-blade screwdriver, pry the claws

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–37Cassette Pickup Assembly Board (page 1 of 4)First Remove the paper pickup block.The casset

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–38Cassette Pickup Assembly Board (page 2 of 4)2 Remove the three silver-colored screws that

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–39Cassette Pickup Assembly Board (page 3 of 4)3 Disconnect J301 from the pickup board and re

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–40Cassette Pickup Assembly Board (page 4 of 4)4 Disconnect connectors J302, J303, and J304 a

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–41I/O Controller Board (page 1 of 2)First No first steps are required.Now 1 Loosen the two ca

96.09.12.16.35 Color LaserWriter 12/600 PS Take Apart 3–42 I/O Controller Board (page 2 of 2)A replacement I/O controller board comes without SIM

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–43Air Filter (page 1 of 2)First No first steps are required.Note: This part is available as

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–44Air Filter (page 2 of 2)2 Unlock and remove the air filter from the cover.

95.08.23.16.19 Color LaserWriter 12/600 PS Basics & Theory 1–13 Density Control Panel The density control panel on the rear of the printer c

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–45Ozone Filter (page 1 of 2)First No first steps are required.Now 1 Press down slightly on th

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–46Ozone Filter (page 2 of 2)2 Grasp the tab on the ozone filter and slide the filter from its

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–47Front DoorFirst No first steps are required.Now Open the front door and remove the brass-co

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–48Front Door Latch AdjustmentFirst Open the pickup block door.After prolonged use or directl

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–49Top Cover (page 1 of 5)First No first steps are required. Now 1 Open the front door. Ope

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–50Top Cover (page 2 of 5)2 Open the top access door, release the small tab by gently pullin

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–51Top Cover (page 3 of 5)Important: There are three hidden claws at the left end of the to

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–52Top Cover (page 4 of 5) 3 Reach across the top cover and hold your left thumb on the up

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–53Top Cover (page 5 of 5)Note: The four frames below are from the movie on the previous pag

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–54About Inner PanelsGeneral The dark gray face of the front chassis wall is actually compose

95.08.23.11.29 Color LaserWriter 12/600 PS Basics & Theory 1–14 Density Adjustments This feature is offered for customers who have multiple

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–55Inner Panel 1First Remove the top cover.Note: Inner panel 1 is the plastic molding in the

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–56Inner Panel 2First No first steps are required.Note: Inner panel 2 is the plastic molding

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–57Transfer Drum PanelFirst Remove the toner disposal box, top cover, inner panel 1, and inne

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–58Toner Carousel Guide PanelFirst Remove the top cover and inner panel 1.Now Remove the five

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–59Left CoverFirst Remove the top cover.Now Remove the two silver-colored screws that secure

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–60Rear CoverFirst Remove the top cover and left cover.Now Release the two tabs at the upper

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–61Rear Shield PlateFirst Remove the top cover, left cover, and rear cover.Now Remove the nin

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–62Separation Discharge AssemblyFirst No first steps are required.Now 1 Open the front door an

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–63Status Panel Bottom CoverFirst No first steps are required.Now Open the front door. Carefu

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–64Status PanelFirst Remove the status panel bottom cover.Now Carefully release the four flex-

95.08.23.11.29 Color LaserWriter 12/600 PS Basics & Theory 1–15 Test PagePattern Selection This feature allows you to select one of six test

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–65Main MotorFirst Remove top cover, left cover, rear cover, and rear shield plate.Now Discon

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–66About FansGeneral There are three exhaust fans in the Color LaserWriter 12/600 PS. Take-a

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–67Fuser Fan (FM1) (page 1 of 2)First Remove top cover, left cover, rear cover, and rear shie

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–68Fuser Fan (FM1) (page 2 of 2)2 Disconnect J2008 and J2009 from the mechanical controller b

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–69Main Fan (FM2) (page 1 of 3)First Remove the top cover, left cover, rear cover, and rear s

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–70Main Fan (FM2) (page 2 of 3)Note: For clearance purposes, you must loosen the I/O board h

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–71Main Fan (FM2) (page 3 of 3)3 Remove the mechanical controller mount and board, remove the

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–72I/O Controller Fan (FM3) (page 1 of 2)First Remove top cover, left cover, rear cover, and

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–73I/O Controller Fan (FM3) (page 2 of 2)2 Remove the brass-colored screw and the four flex-ty

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–74I/O Interconnect Shield (page 1 of 2)First Remove the front door, top cover, and status pa

95.08.23.11.29 Color LaserWriter 12/600 PS Basics & Theory 1–16 Separation Voltage DesignationThis feature allows you to override the printe

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–75I/O Interconnect Shield (page 2 of 2)2 Lift the shield and status panel housing and discon

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–76Density Control PanelFirst Remove top cover, left cover, rear cover, and rear shield plate

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–77I/O Interconnect BoardFirst Remove I/O controller board, front door, top cover, status pan

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–78DC Controller Board (page 1 of 5)First Remove the I/O controller board, front door, top co

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–79DC Controller Board (page 2 of 5)Now 1 Disconnect connectors J2007 and J2010 from the mech

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–80DC Controller Board (page 3 of 5)2 Remove the seven silver-colored screws that secure the

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–81DC Controller Board (page 4 of 5)3 Pull the fan cable under the density control panel beze

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–82DC Controller Board (page 5 of 5)4 Remove all the remaining connectors and the four silver

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–83Laser/Scanner AssemblyFirst Remove the I/O controller board, front door, top cover, left c

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–84Mechanical Controller BoardFirst Remove the top cover, left cover, rear cover, and rear sh

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–17Registration AdjustmentsThis feature allows you to adjust the placement of the

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–85Mechanical Controller Mount and Board (page 1 of 3)First Remove the top cover, left cover,

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–86Mechanical Controller Mount and Board (page 2 of 3)2 Remove the two silver-colored screws

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–87Mechanical Controller Mount and Board (page 3 of 3) 3 Using a flat-blade screwdriver, pr

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–88Power Supply (page 1 of 2)First Remove the top cover, left cover, rear cover, and rear shi

95.08.23.09.17Color LaserWriter 12/600 PS Take Apart 3–89Power Supply (page 2 of 2)2 Remove the five silver-colored screws and the six connectors al

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–90High-Voltage Power SupplyFirst Remove the paper cassette, top cover, left cover, rear cove

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–91About SolenoidsGeneral There are nine solenoids in the Color LaserWriter 12/600 PS and one

95.08.24.14.44 Color LaserWriter 12/600 PS Take Apart 3–92 Cleaning Belt Drive Solenoid First Remove the top cover. Now 1 Remove the two silver-co

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–93Solenoid Assembly (page 1 of 2)First Remove the top cover, left cover, rear cover, rear sh

95.08.24.14.45 Color LaserWriter 12/600 PS Take Apart 3–94 Solenoid Assembly (page 2 of 2)2 If you need to replace one of the solenoids, remove t

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–18II. Basic Operation

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–95Delivery Drive AssemblyFirst Remove the top cover.Now Remove the silver-colored screw that

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–96About Transfer Drum PeripheralsGeneral The four assemblies below transfer mechanical drive

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–97Cleaning Drive AssemblyFirst Remove the top cover, left cover, rear cover, rear shield pla

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–98Attraction Roller Drive AssemblyFirst Remove the top cover, left cover, rear cover, rear s

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–99Discharge Roller Drive AssemblyFirst Remove the top cover, left cover, rear cover, rear sh

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–100Transfer Drum Drive AssemblyFirst Remove the top cover, left cover, rear cover, rear shie

95.08.24.14.47 Color LaserWriter 12/600 PS Take Apart 3–101 Transfer Drum Cleaning Assembly (page 1 of 4) First No first steps are required. Now

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–102Transfer Drum Cleaning Assembly (page 2 of 4)2 Remove the connector cover at the right en

95.08.24.14.49 Color LaserWriter 12/600 PS Take Apart 3–103 Transfer Drum Cleaning Assembly (page 3 of 4)3 Unlock the lock lever at the left end

95.08.24.14.54 Color LaserWriter 12/600 PS Take Apart 3–104 Transfer Drum Cleaning Assembly (page 4 of 4)4 Slide the assembly to the left and pul

Service Source K Color LaserWriter Color LaserWriter 12/600 PSColor LaserWriter 12/660 PS

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–19Paper Path AnimationThe icon to the left appears at key points throughout this

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–105High-Voltage Separation Assembly (page 1 of 3)First Remove the I/O controller board, top

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–106High-Voltage Separation Assembly (page 2 of 3)Note: For clearance purposes, you must loo

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–107High-Voltage Separation Assembly (page 3 of 3)Replacement Note: Make sure to place all o

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–108Transfer Drum Assembly (page 1 of 2)First Remove the toner disposal box, photoconductor c

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–109Transfer Drum Assembly (page 2 of 2)2 Lower the transfer drum lever. Grasp the rounded o

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–110Paper Delivery Assembly (page 1 of 2)First Remove the top cover, fuser oil bottle, fuser

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–111Paper Delivery Assembly (page 2 of 2)2 Release the flex tab and shift the assembly to the

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–112Printer Drive Assembly (page 1 of 2)First Remove the toner disposal box, photoconductor c

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–113Printer Drive Assembly (page 2 of 2)2 For clearance purposes, remove the two silver-color

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–114Toner Sensor (Emitter)First Remove the printer drive assembly (see previous topic). The

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–20FunctionsPrinter functions can be divided into four systems: the overall contro

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–115Toner Sensor (Receiver) (page 1 of 3)First Remove the toner disposal box, photoconductor

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–116Toner Sensor (Receiver) (page 2 of 3)Now 1 Remove the brass-colored screw that secures th

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–117Toner Sensor (Receiver) (page 3 of 3)2 Release the four tabs and separate the sensor boar

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–118Oil Sensor Assembly (page 1 of 2)First Remove the fuser access cover and fuser assembly.N

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–119Oil Sensor Assembly (page 2 of 2)2 Raise the top access door and locate the black cable c

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–120Disposal Box Cover Assembly (page 1 of 2)First Remove the toner disposal box.Now 1 Releas

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–121Disposal Box Cover Assembly (page 2 of 2)2 Disconnect the three-wire connector from J631

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–122Toner Release Assembly (page 1 of 2)First Remove the toner cartridges, front door, inner

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–123Toner Release Assembly (page 2 of 2)2 Release the two tabs, pull the green handle to its

95.08.24.14.56 Color LaserWriter 12/600 PS Take Apart 3–124 Temperature/Humidity Sensor First Remove the toner cartridges, front door, inner panel

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–21Outline of Electrical System The operation sequence for the printer is controll

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–125Ejection Sensing Board (page 1 of 3)First Remove the paper cassette, toner cartridges, fr

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–126Ejection Sensing Board (page 2 of 3)2 Remove the brass-colored screw and pull the ejectio

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–127Ejection Sensing Board (page 3 of 3)3 Disconnect J1602 from the ejection sensing board.

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–128Cassette Size Sensing Board (page 1 of 5)First Remove the paper cassette, toner cartridge

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–129Cassette Size Sensing Board (page 2 of 5)2 Remove the brass-colored screw and pull the ej

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–130Cassette Size Sensing Board (page 3 of 5)3 Disconnect J1602 from the ejection sensing boa

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–131Cassette Size Sensing Board (page 4 of 5)4 Release the tab and snap the sensor housing up

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–132Cassette Size Sensing Board (page 5 of 5)5 Release the two tabs and remove the cover. Di

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–133Position Sensor Assembly (page 1 of 2)First Remove the top cover, left cover, rear cover,

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–134Position Sensor Assembly (page 2 of 2)2 Disconnect the cable from the transit coupling at

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–22Outline of Major Circuit Boards This section describes the functions of the DC

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–135Carousel Manual Rotary Assembly (page 1 of 2)First Remove the front door, toner carousel

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–136Carousel Manual Rotary Assembly (page 2 of 2)2 Remove the four silver-colored screws that

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–137Toner Carousel InterlockFirst Remove the top cover, left cover, rear cover, rear shield p

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–138Toner Carousel Assembly (page 1 of 5)First Remove the toner disposal box, photoconductor

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–139Toner Carousel Assembly (page 2 of 5)Replacement Note: Make sure to install the rocker p

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–140Toner Carousel Assembly (page 3 of 5)2 Remove the three silver-colored self-tapping screw

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–141Toner Carousel Assembly (page 4 of 5)3 Remove the three brass-colored screws and remove t

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–142Toner Carousel Assembly (page 5 of 5)4 Slide the carousel assembly out the left side of t

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–143Sheet Feeder Removal (page 1 of 2)First No first steps are required.Note: The Color Laser

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–144Sheet Feeder Removal (page 2 of 2)2 Remove the two cotter pins that secure the printer to

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–23DC Controller Input/Output SignalsPWM mode-setting signal"L" to drive

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–145Sheet Feeder Front CoverFirst Remove the paper cassette.Now Open the side access cover.

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–146Sheet Feeder Rear CoverFirst Remove the cassette.Now Remove the two brass-colored screws

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–147Sheet Feeder Left CoverFirst Remove the cassette, front cover, and rear cover.Now Remove

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–148Sheet Feeder Right Corner CoverFirst Remove the cassette and front cover.Now Remove the b

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–149Sheet Feeder Side Access Cover (page 1 of 2)First Remove the cassette.Now 1 Open the side

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–150Sheet Feeder Side Access Cover (page 2 of 2)2 While holding the metal bracket in place, r

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–151Sheet Feeder Pickup Block (page 1 of 2)First Remove the cassette, front cover, and side a

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–152Sheet Feeder Pickup Block (page 2 of 2)2 Remove the seven large silver-colored screws, di

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–153Sheet Feeder Front Paper Pickup AssemblyFirst Remove the cassette, front cover, side acce

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–154Sheet Feeder Rear Paper Pickup AssemblyFirst Remove the cassette, front cover, side acces

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–24+24VPOFFPCONTDOPNFXSTSSFSNS/FXUON/FXLONTHI/FXSNSH1H2/FXROF/FXENBRelay+5V+5VPowe

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–155Oil-Overflow Sensor (PS10) (page 1 of 6)First Remove the fuser access cover, fuser oil bot

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–156Oil-Overflow Sensor (PS10) (page 2 of 6)2 Remove the two brass-colored screws, one that se

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–157Oil-Overflow Sensor (PS10) (page 3 of 6)3 Remove the silver-colored screw that secures the

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–158Oil-Overflow Sensor (PS10) (page 4 of 6)4 Remove the two black screws and lift the long bl

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–159Oil-Overflow Sensor (PS10) (page 5 of 6)Note: For the following step, you will need a sho

95.08.23.09.18Color LaserWriter 12/600 PS Take Apart 3–160Oil-Overflow Sensor (PS10) (page 6 of 6)6 Remove the connector from sensor PS10. Release

96.05.15.10.25 Color LaserWriter 12/600 PS Illustrated Parts 4–6 Finished Goods Parts Description The parts below are available through Finished Go

96.05.15.10.25 Color LaserWriter 12/600 PS Illustrated Parts 4–9 Sheet Feeder Exploded View661-0932 Sheet Feeder Power Supply (Universal)922-1355 S

96.05.15.10.25 Color LaserWriter 12/600 PS Illustrated Parts 4–11 Switches Locations The illustrations below show switch locations for the Color La

96.05.15.10.25 Color LaserWriter 12/600 PS Illustrated Parts 4–12 Descriptions The table below describes the switches for the Color LaserWriter 12/

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–25Temperature/Humidity SensorHUMSNSTMPSNS+5VJ2007-6-7-9-8,-10DSNS/DSEL+24VJ103-14

96.05.15.10.25 Color LaserWriter 12/600 PS Illustrated Parts 4–13 Sensors Locations The illustrations below show sensor locations for the Color Las

96.05.15.10.25 Color LaserWriter 12/600 PS Illustrated Parts 4–14 Descriptions(1 of 2) The table below describes the photo-interrrupter sensors use

96.05.15.10.25 Color LaserWriter 12/600 PS Illustrated Parts 4–15 Descriptions(2 of 2) The table below describes the other sensors used in the Colo

96.05.15.10.25 Color LaserWriter 12/600 PS Illustrated Parts 4–16 Solenoids/Clutches Locations The illustrations below show solenoid and clutch loc

96.05.15.10.25 Color LaserWriter 12/600 PS Illustrated Parts 4–17 Descriptions The table below describes the other solenoids and clutches used in t

96.05.15.10.25 Color LaserWriter 12/600 PS Illustrated Parts 4–18 Motors/Fans/Heaters Locations The illustrations below show fan, motor, and fuser

96.05.15.10.25 Color LaserWriter 12/600 PS Illustrated Parts 4–19 Descriptions The table below describes the fan, motor, and fuser heaters used in

96.05.15.10.25 Color LaserWriter 12/600 PS Illustrated Parts 4–20 Circuit Boards Locations The illustrations below show circuit board locations for

96.05.15.10.25 Color LaserWriter 12/600 PS Illustrated Parts 4–21 Descriptions The table below describes the major circuit boards used in the Color

96.05.15.10.25 Color LaserWriter 12/600 PS Illustrated Parts 4–22 Connector Locations 1 of 3J55J54J53J1201J51J52J57J56J65J15J621J2010J2011J2012J201

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–26Mechanical Controller Board Input/Output SignalsDEVHPCL2+24V/DEVONJ2017-4-3PS4P

96.05.15.10.25 Color LaserWriter 12/600 PS Illustrated Parts 4–23 2 of 3J23J1004J29J28J22J21J2016J2015J31J310J302J303J304J301J305J32J33J36J35J34J41

96.05.15.10.25 Color LaserWriter 12/600 PS Illustrated Parts 4–24 3 of 3J361J358J359J355J354J353J352J351J356J357J312

96.09.06.09.07 Bulletins

Pump The Fuser Jam Release Lever To Remove Excess OilOpen the fuser access door to locate the teal green fuser paper jam release lever. Pump the lever

Circuit Breaker- TrippedCircuit Breaker- NormalColor LaserWriter 12/600PS- Circuit Breaker Reset ProceduresIn order to access the circuit breaker the

Service Source K Exploded View Color LaserWriter 12/60012/660

Exploded View 1 Exploded View 922-1354Separation DischargeAssy Photoconductor Cartridge*922-1368Transfer DrumCleaning Assy661-0899MechanicalCont

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–27Mechanical Controller BoardM5PS8TOPREGPS7SEPSNSSL4GRIPONSL5+24VSEPONJ2014-8-7FM

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–28Outline of Drive System The printer has six motors: the pickup motor, main moto

96.11.13.15.58 Color LaserWriter 12/660 PS

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–29Main Motor(M2) The main motor is a DC brushless motor. It is controlled by the

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–30Basic Sequence of OperationOutline The following table describes the five period

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–31III. Laser/Scanner System

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–32Laser SystemOutline When the /PRNT signal is sent from the I/O controller, the

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–33Video Data Processing The video data supplied by the I/O controller is composed

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–34Laser Control Circuit Laser Emission The DC controller generates 8-bit video d

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–35Laser Intensity Control The CPU in the DC controller controls the intensity of

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–36Between-Pages APC Immediately after the initial APC, the printer performs the b

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–37Laser Diode Emission Control The laser driver circuit turns the laser diode on

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–38 Scanner System Outline The scanning mirror is a critical part in the scanner u

96.11.13.15.58 Color LaserWriter 12/660 PS 3–2 Overview The Color LaserWriter 12/660 PS is an enhanced version of the original Color LaserWriter

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–39Scanner Motor Circuit The scanner motor is a three-phase, 8-pole DC brushless m

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–40IV. Image Formation System

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–41OutlineThe image formation system is the nucleus of the printer. Its major com

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–42The transfer drum is also cleaned periodically to remove toner. However, its s

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–43Photoconductor CartridgeOutline The photoconductor cartridge comprises the pri

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–44Toner CartridgeOutline The toner cartridge includes a toner container with sti

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–45Cartridge-Presence DetectionThe printer has cartridge-presence and toner-level

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–46Toner-Level DetectionWhen it presses against the photosensitive drum, the cartr

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–47Stages of Imaging The print process is roughly divided into the six stages show

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–48Stage 1: Electrostatic Latent Image FormationThis stage consists of two steps,

96.11.13.15.58 Color LaserWriter 12/660 PS 3–3 3 Place the shims under the printer’s feet (as needed) to level the printer.The oil absorption she

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–49Step 1: Primary ChargingAs a preliminary step in forming the latent image, the

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–50Stage 2: DevelopingIn this stage, the toner is placed on the electrostatic lat

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–51Stage 3: Photosensitive Drum CleaningStep 4: Photosensitive Drum Cleaning Duri

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–52 When the photosensitive drum door opens, the shutter lever is released, and th

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–53Stage 4: TransferThis stage consists of four steps: grip, attraction, transfe

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–54Step 6: Attraction The attraction roller imparts negative charges onto the pape

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–55Step 7: TonerTransfer The paper attracted to the transfer drum is transported i

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–56Step 8: SeparationPaper is separated from the transfer drum by the gripper and

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–57Stage 5: Transfer Drum Cleaning and DischargeAfter the page has left the trans

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–58Step 10: DischargeAC bias is applied by the discharge roller to eliminate charg

96.11.13.15.58 Color LaserWriter 12/660 PS 3–4 2 Open the fuser assembly and remove the oil absorption sheet from the inside of the fuser assembl

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–59Stage 6: FusingStep 11: FusingIn the transfer stage, the toner image transferr

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–60High-Voltage Control: Outline The high-voltage power supply of the printer is

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–61High-Voltage Control: Operation When the /PRNT signal sent from the I/O contr

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–62 For the initial rotations, IC1003 sets the /HV1DC1 signal to “L” and the /HV1D

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–63Developing Bias When the print sequence starts, the primary charging voltage (A

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–64As the density adjustment signal (for the developing bias) (/DEVPWM) adjusts im

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–65Voltage to Transfer Drum The transfer drum is charged with print bias and betwe

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–66For full-color transfer, the transfer force weakens as the number of negatively

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–67Voltage to Separation DischargeAssemblySeparation AC voltage is applied to the

95.08.23.11.29Color LaserWriter 12/600 PS Basics & Theory 1–68Photosensitive Drum Life Detection Outline The printer determines the life of

96.11.13.15.58 Color LaserWriter 12/660 PS 3–5 Upgrade Path You can upgrade a Color LaserWriter 12/600 PS to a Color LaserWriter 12/660 PS by ins

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–69After charging for a specified period of time, the /HV1DC1 signal is set to “H,”

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–70When you lower the transfer drum lever, drum separation cam 2 moves the transfe

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–71Toner Carousel Control: Outline The toner carousel consists of four cylindri

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–72Mechanical drive is delivered to the toner carousel in three phases: the rotat

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–73Toner Cartridge InstallationPins 1, 2, 3The front face of the toner cartridge h

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–74Pins7, 8The 3/8" (95 mm) wide pin 7 at the center-point of the cartridge m

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–75 Carousel RotationThe carousel rotates to advance the next toner cartridge to t

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–76CarouselRotational Position Detection The rotational position of the toner caro

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–77Toner Cartridge Position Detection The press/separation of the toner cartridge

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–78Carousel RotationFailureWhen the following phenomena are detected by the toner

96.11.13.15.58 Color LaserWriter 12/660 PS 3–6 problem is likely in the application and the ROM upgrade will not help.If possible, try printing t

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–79TonerCartridge StopThe carousel stops when the next toner cartridge is facing t

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–80Toner Cartridge PressThe toner cartridge is pressed against the photosensitive

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–81Developing Cylinder DriveThe toner carousel motor rotates the developing cylind

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–82Toner Cartridge SeparationThe toner cartridge separates from the photosensitive

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–83Carousel Motor Drive Circuit The toner carousel motor (M3) is a two-phase stepp

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–84Image Quality Stability Control Outline The printer is protected by an image q

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–85Temperature/Humidity Sensing SystemThe printer has a temperature/humidity senso

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–86Density Calibration SystemDensity Control Maximum density control is performed

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–87 At each of the five intervals specified previously, the DC controller prints a

95.08.23.11.30Color LaserWriter 12/600 PS Basics & Theory 1–88 V. Pickup/Feed System