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Brother MP-21C Service Manual

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R
COLOR INKJET PRINTER

SERVICE MANUAL

MODEL:MP-21C/21CDX

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Summary of Contents for Brother MP-21C

  • Page 1: Service Manual

    COLOR INKJET PRINTER SERVICE MANUAL MODEL:MP-21C/21CDX...
  • Page 2 SERVICE MANUAL MODEL: MP-21C / 21CDX...
  • Page 3 Specifications are subject to change without notice. Trademarks: The brother logo is a registered trademark of Brother Industries, Ltd. Microsoft is a registered trademark of Microsoft Corporation. Windows is a registered trademark of Microsoft Corporation in the U.S. and other countries.

  • Page 4: Table Of Contents

    1.1 Normal Interlace Processing (360dpi) ----------------------------------------------- II-1 1.2 Super Fine Interlace Processing (720dpi) ------------------------------------------ II-2 2. ELECTRONICS---------------------------------------------------------------- II-3 2.1 General Block Diagram (MP-21C/MP-21CDX) ------------------------------------ II-3 2.2 Electric Cofiguration ---------------------------------------------------------------------- II-4 2.3 Main PCB ----------------------------------------------------------------------------------- II-5 2.4 Head PCB ---------------------------------------------------------------------------------- II-9 2.5 Carriage PCB ------------------------------------------------------------------------------ II-9...
  • Page 5 PR99052 3. MECHANICS -----------------------------------------------------------------II-11 3.1 Overview of Printing Mechanism ---------------------------------------------------- II-11 3.2 Print Head -------------------------------------------------------------------------------- II-12 3.3 Ink Cartridge ----------------------------------------------------------------------------- II-14 3.4 Head Maintenance Mechanism ----------------------------------------------------- II-15 3.5 Sensors ----------------------------------------------------------------------------------- II-16 3.6 Carriage Drive Mechanism ----------------------------------------------------------- II-20 3.7 Paper Feed Mechanism --------------------------------------------------------------- II-21 CHAPTER III DISASSEMBLY AND REASSEMBLY 1.
  • Page 6 PR99065 CHAPTER IV TROUBLESHOOTING 1. INTRODUCTION ------------------------------------------------------------- IV-1 1.1 Initial Check ------------------------------------------------------------------------------- IV-1 1.2 Basic Procedure ------------------------------------------------------------------------- IV-2 2. TROUBLESHOOTING ----------------------------------------------------- IV-3 2.1 Troubleshooting Procedure ------------------------------------------------------ IV-3 3. INSPECTION MODE ----------------------------------------------------- IV-10 3.1 Extended Functions ------------------------------------------------------------------- IV-10 3.2 Hidden Functions ---------------------------------------------------------------------- IV-11 3.3 Error Codes ----------------------------------------------------------------------------- IV-13 APPENDIX A Appendix A1 Head PCB Circuit Diagram ------------------------------------------------ A-1...

  • Page 7: Chapter I Features And Specifications

    Chapter I FEATURES AND SPECIFICATIONS...
  • Page 8 4.12.5 Purge Sequence ------------------------------------------------------------------ I-18 5. SAFETY INFORMATION ------------------------------------------------- I-19 5.1 Ink Safety ---------------------------------------------------------------------------------- I-19 6. CONSUMABLES AND SERVICE ACCESSORIES --------------- I-19 6.1 Brother Special Paper ------------------------------------------------------------------ I-19 6.2 Ink Cartridges ----------------------------------------------------------------------------- I-19 6.3 ACSF and Parallel I/F Cable ---------------------------------------------------------- I-20...

  • Page 9: System Requirement

    Therefore you do not have to carry an AC adapter and a printer cable with you all the time. Brilliant 4 Color Output at 720dpi You can get wonderful output at 720 by 720dpi resolution. When you print on Brother special coated paper and glossy paper, you can get excellent high resolution output. Two Color Print Mode When you select this mode through the printer driver, you can print the color output in two colors.
  • Page 10 Low Running Cost You don't have to throw the print head of your printer away every time you have emptied an ink cartridge. When you run out of ink, you have to change only the ink cartridges. Straight Paper Path The printer can print on various types of paper - plain paper, coated paper, glossy paper, transparencies and envelopes with fewer paper jams.

  • Page 11: Configuration

    CONFIGURATION Mechanics < Overview > MP-21C MP-21CDX Fig. 1.1...

  • Page 12: Electronics

    Electronics The configuration diagram is as shown below. Fig. 1.2...

  • Page 13: Specifications

    PR99052, PR99062 SPECIFICATIONS Printing Print Method Piezotronic dot matrix ink jet Head Nozzle 32 x 4 nozzles Print Quality Super Fine / Normal / Draft Resolution (V x H) 720 x 720 dots/inch (Super Fine) 360 x 360 dots/inch (Normal) 180 x 360 dots/inch (Draft) Print Speed With Printer Interface Card:...

  • Page 14: Printing

    • Special paper Brother Quality Coated Paper for 360dpi printing BP36CL (Letter), BP36CA (A4) Brother High Quality Coated Paper for 720dpi printing BP72CL (Letter), BP72CA (A4) Brother Color Inkjet Glossy Paper BPGLL (Letter), BPGLA (A4) Transparencies Brother Transparencies BPTRL (Letter)

  • Page 15: Paper Specifications

    DO NOT use ordinary transparencies designed for photocopiers or laser printers. Use the recommended transparencies for the MP-21C/CDX printers to obtain optimum print quality If the paper will not feed from the ACSF, try the manual feed.

  • Page 16: Printable Area

    Printable Area The table below shows the effective printable areas. Plain paper (Unit = mm) SIZE 210.0 297.0 203.2 282.5 11.5 (8.2”) (11.5”) (8.0”) (11.1”) (0.13”) (0.11”) (0.13”) (0.45”) Letter 215.9 279.4 203.2 264.9 6.35 6.35 11.5 (8.5") (11.0") (8.0”) (10.4”) (0.25”) (0.11”)
  • Page 17 The table below shows the recommended printable areas. Plain paper (Unit = mm) SIZE A’ B’ C’ D’ E’ F’ G’ H’ 210.0 297.0 203.2 265.5 11.5 (8.2”) (11.5”) (8.0”) (10.4”) (0.13”) (0.78”) (0.13”) (0.45”) Letter 215.9 279.4 203.2 247.9 6.35 6.35 11.5...

  • Page 18: Control Panel (Led And Buttons

    Control Panel (LEDs and Buttons) This printer is equipped with a minimal control panel. Settings and status indication are available on the printer driver status monitor. The control panel includes the following LEDs and buttons. < Buttons > < LEDs > Power LED Alarm LED Clean button...

  • Page 19: Ink Leds (Bc Led And My Led

    4.9.3 Ink LEDs (BC LED and MY LED) Each Ink LED indicates when the ink is low or empty with the Alarm LED on. Printer status Blinking The color ink cartridge is running out of ink. You should prepare a new ink cartridge for that color.

  • Page 20: Control Panel (Led And Buttons

    4.9.6 Printer Status The table below shows the details of the various printer status conditions. Status Description Not energized Power is not supplied. Power off Power is turned off (low power consumption mode). Online Ready to receive data. Operator call An operator call has occurred.

  • Page 21: Leds

    4.9.8 LEDs The table below shows the LED indications. Status (Power) (Alarm) (Ink BC) (Ink MY) Not energized Energized/Power OFF Being initialized/Device being busy Online No alarm Ink near empty Ink empty Receiving No alarm data/Printing Ink near empty Ink empty Operator call Ink near empty Ink empty...

  • Page 22: How To Clean The Print Head - Purge

    The printer starts cleaning the print head automatically. When the cleaning is finished, the printer becomes online automatically. Note: You can clean the print head from the printer driver. Select [Control/Maintenance] tab from the MP-21C/MP-21CDX Windows printer driver and click the [Maintenance] button. I-14...

  • Page 23: Replacing The Ink Cartridges

    When the LED(s) shows an ink empty or an ink near empty status, replace the indicated ink cartridge(s) with a new one. We strongly recommend you use Brother original ink cartridges for the best print quality. Using other ink may void the warranty for this printer.

  • Page 24: Recovery Function - Purge

    PR99052 Close the Top cover. The printer will automatically start initial purge. When the initial purge is done, the Power LED comes on. Warning: If ink stains your body or clothing, wash with soap or detergent immediately. If ink gets in your eyes, irrigate them with water immediately and consult a doctor if you are concerned.

  • Page 25: Automatic Purge

    PR99052 4.12.2 Automatic Purge Date condition Condition Purge Time condition type type First ink cartridges are Just after the ink cartridges installed into a brand- installation. The IP is carried out new printer. only one time in the whole printer life.

  • Page 26: Purge Sequence

    PR99052 The number of automatic purges such as the date defined and cartridge purge are ignored. When the printer is in the following condition, the printer cannot detect that the Clean button is pressed. - The power is OFF. - The printer is in a printing operation. - The printer is performing a purge operation.

  • Page 27: Safety Information

    (Never give anything by mouth to an unconscious person) INHALATION: Remove to fresh air area. Help with breathing and if necessary get medical attention. CONSUMABLES AND ACCESSORIES Brother Special Paper • Quality Coated Paper for 360 dpi printing Letter size No. BP36CL A4 size No.

  • Page 28: Acsf And Parallel I/F Cable

    PR99052 AC Adapter, ACSF and Parallel I/F Cable AC Adapter and Parallel I/F cable No. PA21MP ASCF only No. SF21MP I-20...

  • Page 29: Chapter Ii Theory Of Operation

    Chapter II THEORY OF OPERATION...

  • Page 30: General

    1.1 Normal Interlace Processing (360dpi) ----------------------------------------------- II-1 1.2 Super Fine Interlace Processing (720dpi) ------------------------------------------ II-2 2. ELECTRONICS -------------------------------------------------------------- II-3 2.1 General Block Diagram (MP-21C/MP-21CDX) ------------------------------------ II-3 2.2 Electrical Configuration ------------------------------------------------------------------ II-4 2.3 Main PCB ----------------------------------------------------------------------------------- II-5 2.3.1 Data Reception -------------------------------------------------------------------- II-5 2.3.2 Control Panel ----------------------------------------------------------------------- II-5...

  • Page 31: Normal Interlace Processing (360Dpi

    CHAPTER II THEORY OF OPERATION GENERAL Normal Interlace Processing (360dpi) Fig. 2.1 below shows the relationship between the printing area and the line feed amount for each print head pass. pass 4 pass 1 (Position to start printing) pass 2 (Line feed amount) pass 3 124/1440...

  • Page 32: Super Fine Interlace Processing (720Dpi

    Super Fine Interlace Processing (720dpi) This is a method to perform printing using nozzles moved at 4/360 inch pitch using nozzles spaced at 2/360 inch pitch. Fig. 2.2 below shows the relationship between the printing area and the line feed amount for each head print pass. pass2 pass1 (Position to start to printing) (Line feed amount)

  • Page 33: Electronics

    2. ELECTRONICS General Block Diagram (MP-21C/MP-21CDX) Fig. 2.3 II-3...

  • Page 34: Main Pcb

    PR99052 Electrical Configuration Main PCB • The Main PCB controls the following functions : Data reception, Control panel control, Paper feed and carriage motor control, Paper sensing, Cartridge detection, Head voltage control, Data transmission to the head driver • A one chip type CPU with a program of 128 KB is used. •...

  • Page 35: Data Reception

    Main PCB 2.3.1 Data Reception IEEE1284 bi-directional nibble mode is supported. The data reception operation is performed by the gate array. The CINT-N signal from the gate array indicates the reception of data to the CPU and control data is processed by the CPU. The printing data is transmitted directly to the memory without being transmitted to the CPU.

  • Page 36: Paper Feed And Carriage Motor Drive Circuit

    2.3.3 Paper Feed and Carriage Motor Drive Circuit A PM-type stepper motor is used to feed paper and is driven at a constant voltage. A DC motor is used for the carriage. It uses the feedback signal (EINT-P) from the linear encoder and its speed is controlled via the gate array by the CPU using the PWM control method.

  • Page 37: Paper Sensor

    2.3.4 Paper Sensor The photo type sensor is contained on the Main PCB. The movable part of the mechanism detects if there is paper or not and turns the sensor on and off. When light is transmitted, there is no paper. The CH1 level of the sensor output is less than 2.5V without paper and 2.5V or more with paper present.

  • Page 38: Cartridge Detection

    2.3.5 Cartridge Detection The detection switch is on the Cartridge PCB and detects the placement of each cartridge separately. The detection signal is at a low level when a cartridge is fitted. Fig. 2.10 • ACTRG and BCTRG are signals indicating the cartridges are fitted. •...

  • Page 39: Carriage Sensor Pcb

    2.3.6 Head Voltage Control The head voltage varies with temperature and head ranks. The VSEL signal from the CPU generates the HVDSEL signal indicating the analogue value which is transmitted back to the power supply unit. The power supply unit outputs the head voltage (HVDD) corresponding to the voltage of the HVDSEL signal.

  • Page 40: Power Supply

    Power Supply The power supply uses the switching regulation system to generate the regulated DC power (+3.3V, +5V, +12V and HVDD), which are converted from the DC input. (When HVDSEL is open) Connector pin #1: NC Connector pin #2 - #4: PCM5V Connector pin #5 - #7: PCM5V RET Connector pin #8: +5V Connector pin #9: +3.3V...

  • Page 41: Mechanics

    MECHANICS Overview of Printing Mechanism Extension guide ACSF Pick-up roller ASSY Carriage ASSY Separation pad ASSY Paper eject roller ASSY Main roller ASSY Power supply PCB Bottom cover Fig. 2.12 II-11...

  • Page 42: Print Head

    Print Head This is an on-demand ink jet printer and ejects ink by the firing of a piezoelectric ceramic actuator. Refer to Fig. 2.13 for the print head structure. A narrow channel filled with ink is sandwiched between two actuators. When a voltage is applied to an electrode formed on the surface of the actuator, ink is pulled into the channel from the manifold with the actuator deformed as shown in the Fig.
  • Page 43 PR99052 Nozzle layout 160/360" 30/360" 30/360" Head Black Cyan Magenta Yellow FWD PRINT FWD FEED Fig. 2.14 (8) Driving voltage 13 V - 30 V (The driving voltage is controlled according to the head temperature see 2.3.6 Head Voltage Control.) (9) Driving pulse SP, SPT or SPIT (No droplet gradation control)

  • Page 44: Ink Cartridge

    PR99052 Ink Cartridge Ink Cartridge BC A liquid ink bag is placed inside the ink cartridge. By inserting the ink cartridge into the printer, an ink needle punctures the seal and is inserted into the ink bag. Ink is supplied to the print head through the ink needle and the ink tube.

  • Page 45: Head Maintenance Mechanism

    Head Maintenance Mechanism 3.4.1 Components and Functions (1) Suction Mechanism Components : Suction cap, Pump, Maintenance cam Functions : Guides ink to the head channel. Removes dry ink from around the nozzle. Removes air and waste in the head channel. Ejects sucked ink towards the ink absorber.

  • Page 46: Sensors

    Storage mechanism : The suction cap and the cap are pressed onto the nozzle plate by rotating the Maintenance cam. Carriage Lock Mechanism : The Maintenance cam rotates and the carriage lock pin goes up before the suction operation to lock the carriage and goes down again before the wiping operation. Sensor : The sensor is on during stand-by.

  • Page 47: Paper Feed Sensor, Paper Eject Sensor

    3.5.2 Paper Feed Sensor, Paper Eject sensor The Paper feed/eject sensor actuator and a photo sensor detect whether there is paper or not. The Paper feed/eject sensor actuator has a paper a sensing arm and the photo sensor operating arm. When paper hits the paper sensing part as paper is ejected the photo actuator arm goes up and detects the paper.
  • Page 48 During printing If the Paper feed sensor OFF states is detected (In case that a paper of different size from the one selected on the printer driver is fed.), the printer stops printing and ejects the paper. The remaining print data will be printed out on the next sheet. Ejecting the paper Upon finishing the print, the printer keeps the paper eject operation running until both the Paper feed sensor and the Paper eject sensor go into the OFF status.

  • Page 49: Maintenance Sensor (Purge Unit

    3.5.3 Maintenance Sensor (Purge Unit) The Maintenance sensor uses a photo sensor to detect the home position of the Maintenance cam. The sensor is on during stand-by ( home position ) and goes off when the Maintenance cam rotates and detects the Maintenance cam's position to start the suction operation. The sensor goes on after the purge, ejection, wiping and capping operations are completed.

  • Page 50: Carriage Drive Mechanism

    Carriage Drive Mechanism The carriage motor controls horizontal movement of the carriage unit. The motor rotation is transmitted to the timing belt via the motor pulley. The guide shaft supports the carriage. The carriage holds the timing belt. The direction of the carriage motor rotation corresponds to the direction of the carriage movement.

  • Page 51: Paper Feed Mechanism

    Paper Feed Mechanism ACSF (MP-21C option) When the line feed motor is driven in the reverse direction (reverse rotation) to the normal paper feeding direction, the change-over 1 frame moves to engage the separation roller gear via the idler gear. The separation roller rotates in the paper separation direction (normal rotation) and separates a sheet of paper.

  • Page 52: Chapter Iii Disassembly And Reassembly

    Chapter III DISASSEMBLY AND REASSEMBLY...
  • Page 53 CONTENTS 1. PRECAUTIONS-------------------------------------------------------------- III-1 1.1 Safety Precautions --------------------------------------------------------------------- III-1 1.2 Attention ---------------------------------------------------------------------------------- III-1 2. TIGHTENING TORQUE LIST -------------------------------------------- III-2 3. DISASSEMBLY ORDER FLOW ---------------------------------------- III-3 4. DISASSEMBLING AND REASSEMBLING PROCEDURE------ III-4 4.1 Ink Cartridge, ACSF -------------------------------------------------------------------- III-4 4.2 Top Cover, Paper Guide, Front Cover, Release Plate, Rear Cover ------- III-5 4.2.1 Top Cover ------------------------------------------------------------------------ III-5 4.2.2 Paper Guide --------------------------------------------------------------------- III-5 4.2.3 Front Cover ---------------------------------------------------------------------- III-6...

  • Page 54: Precautions

    CHAPTER III DISASSEMBLY AND REASSEMBLY PRECAUTIONS Safety Precautions Always turn off the (On/Off and Online) button and unplug the power cord before accessing any parts inside the printer. Note: Even if you turn the (On/Off) button off, the power is not completely shut off.

  • Page 55: Tightening Torque List

    TIGHTENING TORQUE LIST Location Screw type Q’ty Tightening Loosing torque torque (kgf•cm) (kgf•cm) 4.5 ± 1 Front cover Screw, bind M2.6x4 Min. 2.5 (Black) 4.5 ± 1 Rear cover Screw, bind M2.6x4 Min. 2.5 (Black) 4.5 ± 1 Bottom cover Screw, bind M2.6x4 Min.

  • Page 56: Disassembly Order Flow

    DISASSEMBLY ORDER FLOW 4.1 Ink Cartridge BC 4.1 ACSF 4.2 Top Cover Ink Cartridge MY Paper Guide Front Cover Rear Cover Release Plate 4.10.1 ACSF Support 4.3 Head PCB ASSY 4.10.2 Pick-up Roller Cover Cover Sensor Actuator 4.4 Ink Head Base Unit 4.10.3 ACSF Front Cover Print Head Pick-up Roller ASSY...

  • Page 57: Ink Cartridge, Acsf

    DISASSEMBLY AND REASSEMBLY PROCEDURE Note: Reassembly is the reverse of Disassembly unless otherwise stated. Please refer to the Notes relating to Reassembly information. Ink Cartridge, ACSF (For MP-21CDX Only) <Disassembly> For MP-21CDX, remove the ACSF. Connect the power cord to the printer, then turn the power on. Release the Carriage ASSY from the sealing cap using the Service software tool.

  • Page 58: Top Cover, Paper Guide, Front Cover, Release Plate, Rear Cover

    Top Cover, Paper Guide, Front Cover, Release Plate, Rear Cover 4.2.1 Top Cover <Disassembly> Remove the Top cover from the Front cover. Note: This is only necessary if the Top cover requires replacement, otherwise it should be removed with the Front cover as described in section 4.2.3. Front cover Top cover Fig.

  • Page 59: Front Cover

    4.2.3 Front Cover <Disassembly> Remove the screw securing the Front cover. Press the Front cover hook to release the lock, then remove the Front cover. Note: Check that the Top cover sensor lever is attached to the Front cover. Hook Rear cover Screw, bind M2.6x4 (Black) Front cover...

  • Page 60: Release Plate

    4.2.4 Release Plate <Disassembly> Lower the Release plate, then remove it by pulling it to the right. Release plate Fig. 3.5 4.2.5 Rear Cover <Disassembly> Remove the screw. Remove the Rear cover by releasing the two hooks by which the Rear cover is assembled onto the Bottom cover and then release the hook at the top of the Rear cover.

  • Page 61: Head Pcb Assy

    Head PCB ASSY <Disassembly> Unlock and remove the Head FFC cable (the other end is connected to the Main PCB ASSY) from the connector on the Head PCB ASSY. Unlock and remove the four Head FPC cables from the connectors one at a time. Remove the Cartridge sensor connector 3P from the connector on the Head PCB ASSY.

  • Page 62: Ink Head Base Unit, Print Head

    Remove the Cover sensor actuator from the Ink head base unit. Cover sensor actuator Cover sensor actuator spring Ink head base unit Fig. 3.9 Ink Head Base unit, Print Head Note: After replacing Print head, adjustment is need by using the Service software tool.
  • Page 63 Remove the two screws securing the Ink head base unit. Remove the Ink head base unit from the Chassis center ASSY by lifting the left hand end of the Ink head base unit then moving it to the left to release the hooks at the right hand end. Screw, bind M26x4 Ink head base unit Shutter...
  • Page 64 PR99066 <Reassembly> Note: Be sure to slightly push the Print head towards the front of the printer, when securing the Print head with the screws. < Back of the printer > PUSH < Front of the printer > Print head Insert the Print head into the Nozzle protector.

  • Page 65: Bottom Cover

    Bottom Cover <Disassembly> Remove the two screws from the Interface connector using a precision screwdriver. Bottom cover Interface connector Precise screw, M16x4 Fig. 3.14 Turn the printer upside down. Remove the four screws. Screw, bind M2.6x4 (Black) Bottom cover Screw, bind M2.6x4 (Black) Fig.
  • Page 66 Lift up the Bottom cover. Turn it over, then place it down next to the Paper feed frame ASSY Note: DO NOT apply any stress to the harnesses connected to the Main PCB ASSY. Bottom cover Main PCB ASSY Fig. 3.16 Remove the Carriage motor harness 2P, Paper feed motor harness 4P, Maintenance sensor FFC 3P, and Encoder FFC 5P from the Main PCB ASSY.
  • Page 67 Main PCB ASSY, Power Supply PCB ASSY Note: After replacing Main PCB ASSY, adjustment is need by using the Service software tool. <Disassembly> Remove the Power supply FFC cable (which is connecting the Main PCB ASSY and Power supply PCB ASSY) from the connector on the Main PCB ASSY. Remove the Main PCB ASSY from the Bottom cover by releasing the four hooks.
  • Page 68 Remove the Power supply PCB ASSY from the Bottom cover by releasing the four hooks. Unlock and remove the Power supply FFC from the connector on the Power supply PCB ASSY. Power supply PCB ASSY Hook Hook Bottom cover Power supply FFC Hook Hook Fig.

  • Page 69: Paper Feed Motor Assy

    Paper Feed Motor ASSY <Disassembly> Remove the Carriage motor harness 2P and Paper feed motor harness 4P from the two hooks of the Purge unit ASSY, then carefully unstick the harnesses from the double-sided adhesive tape. Carriage motor harness 2P Hook Double-sided adhesive Tape Paper feed motor harness 4P...
  • Page 70 Remove the two screws, then remove the Paper feed motor ASSY from the Paper feed motor holder. Chassis R Paper feed motor connector Taptite, bind M26x4 Paper feed motor ASSY Fig. 3.21 <Reassembly> Note: Mount the Paper feed motor ASSY on the Paper feed motor holder, with the Paper feed motor connector to the right.

  • Page 71: Purge Unit Assy

    Purge Unit ASSY, Flushing Form R1 and R2 <Disassembly> Unstick the Encoder FFC cable 5P from the double-sided adhesive tape attached to the Purge unit ASSY. Remove the four screws and the Support plate from the Purge unit ASSY. Taptite, bind B M3X6 Encoder FFC 5P Taptite, bind B M3X6 Support plate...
  • Page 72 <Reassembly> Important: Check that the Waste ink tube is fitted correctly in the guides and goes into the hole on the Purge unit ASSY Purge unit ASSY Purge unit ASSY Waste ink tube Waste ink tube Fig. 3.25 Important: Check that the Waste ink tube is fitted correctly into the three guides and two hooks on the Platen cover.

  • Page 73: Flushing Foam R1 And R2

    Important: Before reassembling the Purge unit ASSY to the Platen cover, be sure to; - Align the notches of the Purge cam and Purge unit frame. - Fit the protrusion of the Maintenance gear 10 in the notch of the Maintenance idle gear 20.
  • Page 74 <Reassembly> Note: When you replace the Flushing foam R1 and R2, the Flushing foam L1 and L2 must be replaced too. After replacing, the ink counter for these forms must be reset by using the Service software tool. III-21...

  • Page 75: Paper Feed Frame Assy

    Paper Feed Frame ASSY Note: The carriage speed adjustment must be done when the Paper feed frame ASSY is replaced. See 3.2.5 Carriage Control Parameter Adjustment Mode in Chapter 4. 4.9.1 Paper Feed Motor Holder <Disassembly> Remove the screw, then the Earth plate and Paper feed motor holder from the Chassis R.

  • Page 76: Arm Stopper

    4.9.2 Arm Stopper <Disassembly> Remove the Arm stopper from the Connection switching arms. Chassis R Connection switching arm Arm stopper Fig. 3.30 <Reassembly> Note: Fit the Arm stopper over the Connection switching arms, with its wider opening to the left. Narrower opening Arm stopper Wider opening...

  • Page 77: Paper Eject Idle Gear 25

    4.9.3 Paper Eject Idle Gear 25 <Disassembly> Remove the Paper eject idle gear 25 from the shaft on the Chassis R. Chassis R Paper eject idle gear 25 Fig. 3.32 4.9.4 Carriage Guide Note: The carriage speed auto-adjustment must be done when the Carriage guide is replaced.

  • Page 78: Paper Eject Roller Assy

    <Reassembly> Note: Fit the square holes of the Carriage guide onto the Platen cover, then secure it using the two screws. Release the two hooks securing the Star wheel roller ASSY to the Carriage guide, by rotating the Star wheel roller ASSY through 45 degrees. Star wheel roller ASSY Carriage guide Fig.

  • Page 79: Platen Cover, Flushing Foam L1 And L2

    <Reassembly> Fit the Bearing L in the Chassis L. Insert the left end of the Paper eject roller ASSY into the Bearing L. Fit the Bearing R to the right end of the Paper eject roller ASSY. Insert the right end of the Bearing R into the Chassis R.
  • Page 80 Turn the Platen cover upside down. While releasing the catches at the right end of the Chassis center ASSY using your fingers, move the Platen cover to the left then remove it. Boss Platen cover Boss Chassis center ASSY Fig. 3.37 Remove the PE sensor actuator from the Platen cover.
  • Page 81 Remove the Flushing foam L case from the bottom of the Platen cover by releasing the hook . Turn the Flushing foam L case upside down, remove the Flushing foam L1 and L2 from the Flushing foam L case. Flushing foam L1 Flushing foam L case Flushing foam L2 Flushing foam L case...

  • Page 82: Main Roller Assy

    Remove the ACSF sensor actuator by spreading the hooks. <Bottom view of the Platen cover> ACSF sensor actuator Platen cover Fig. 3.41 4.9.7 Main Roller ASSY Note: After replacing Main roller ASSY and Main roller gear 40, adjustment is need by using the Service software tool. <Disassembly>...
  • Page 83 <Reassembly> Note: Attach the Gear shaft 4 calking ASSY to the Chassis R, with the two grooves of the Gear shaft 4 calking ASSY fitting over the Chassis R. Secure it using the screw. Two grooves Chassis R Gear shaft 4 calking ASSY Fig.
  • Page 84 Remove the Retaining ring from the Main roller ASSY using a slotted screwdriver. Remove the Main roller gear 40 and Spring pin. Remove the Paper eject idle gear 25 from the Chassis R. Chassis R Paper eject idle gear 25 Main roller gear 40 (Black) Retaining ring Spring pin 1x5...
  • Page 85 Remove the Main roller ASSY from the Chassis R, with the Bearing R main attached. Note: DO NOT touch the rubber portion of the Main roller ASSY. Bearing R main Main roller ASSY Chassis R Chassis center ASSY Fig. 3.47 Turn the Release cam counterclockwise until its catch fits in the detented portion of the Chassis R, then remove the Release cam.

  • Page 86: Encoder Strip

    4.9.8 Encoder Strip Note: The carriage speed adjustment must be done when Encoder strip is replaced. See 3.2.5 Carriage Control Parameter Adjustment Mode in Chapter 4. <Disassembly> Push the Encoder hook using a precision screwdriver to unhook the Encoder strip. Encoder strip Chassis L Encoder hook...

  • Page 87: Acsf

    4.10 ACSF 4.10.1 ACSF Support <Disassembly> Remove the ACSF support from the ACSF while pulling both ends of the ACSF support outwards. ACSF ACSF support Fig. 3.50 4.10.2 Pick-Up Roller Cover <Disassembly> Remove the Pick-up roller cover from the ACSF by releasing the two hooks. Note: Use a slotted screwdriver to release the two hooks.

  • Page 88: Acsf Front Cover, Pick-Up Roller Assy, Gear Frame R

    4.10.3 ACSF Front Cover, Pick-Up Roller ASSY, Gear Frame R <Disassembly> Remove the ACSF front cover from the ACSF. ACSF front cover Fig. 3.52 Remove the two screws, then the Gear frame R and Pick-up roller ASSY together. Taptite, bind B M3x8 Pick-up roller ASSY Gear frame R Fig.

  • Page 89: Separation Pad Assy

    Remove the left hand end of the Pick-up roller ASSY from the Bearing by moving it to the right. Remove the Gear frame R from the Pick-up roller ASSY. Gear frame R Pick-up roller ASSY Fig. 3.54 4.10.4 Separation Pad ASSY <Disassembly>...

  • Page 90: Extension Guide L And R

    4.10.5 Extension Guide L and R <Disassembly> Remove the two screws, then Extension guide R and L from the ACSF . Tatptite, bind M3x8 Tatptite, bind M3x8 Extension guide L Extension guide R Fig. 3.56 III-37...

  • Page 91: Lubrication

    LUBRICATION Apply the following lubricants to the lubrication points as illustrated below. Lubricant amount Lubricant type Sesame-sized pinch of Rice-sized pinch of grease grease (Manufacturer) (6 mm (0.5 - 1 mm Molykote EM-30L (Dow Corming) Floil 946P ---------- (Kanto Kasei) Floil GE676 ---------- (Kanto Kasei)
  • Page 92 [2] Gears attached to the Paper feed motor holder Gear 10/30 Release plate Gear 10/20 Fig. 3.58 [3] Purge unit ASSY Maintenace gear 10 Maintenace idle gear 20 Maintenace driving gear 16 Maintenace gear 10 Maintenace idle gear 20 Fig. 3.60 Fig.
  • Page 93 [4] Main roller ASSY, Paper eject roller ASSY Fig. 3.61 III-40...
  • Page 94 PR99061 [5] Carriage guide < Left > 19 mm 35 mm Carriage guide 12 mm < Right > 35 mm Fig. 3.62 [6] ACSF Gear frame R Gear 35 On the teeth of the Paper feed gear 35 On the teeth of the Gear 12/30 Fig.
  • Page 95 Pick-up roller ASSY Fig. 3.64 III-42...

  • Page 96: Cleaning The Printer

    CLEANING THE PRINTER Note: Before cleaning the printer or printer platen, be sure to turn off the printer and remove the PC Card Cable from your computer and remove the AC Adapter (MP-21CDX or PA21MP users only) if connected and make sure that all the LEDs are off.

  • Page 97: Cleaning The Pick-Up Roller On The Acsf

    Cleaning the Pick-up roller on the ACSF Remove the Pick-up roller cover. Clean the Pick-up rollers with a cloth dampen with alcohol. Pick-up roller cover Pick-up roller Fig. 3.67 III-44...

  • Page 98: Packing

    PACKING • MP-21C PC interface card cable Partition containerboard Carton Ink cartridge User's manual Quick setup guide Floppy disks PC interface card Styrofoam Spacer containerboard Styrofoam Carton Fig. 3.68 III-45...
  • Page 99 • MP-21CDX PC interface card cable Printer interface cable Partition containerboard AC adapter Ink cartridge Carton User's manual Quick setup guide Floppy disks PC interface card Styrofoam Carton, SF-21 Spacer containerboard ACSF cushioning material Styrofoam SF-21 (ACSF) Carton Fig. 3.69 III-46...

  • Page 100: Chapter Iv Troubleshooting

    Chapter IV TROUBLESHOOTING...

  • Page 101: Introduction

    CONTENTS 1. INTRODUCTION------------------------------------------------------------- IV-1 1.1 Initial Check ------------------------------------------------------------------------------- IV-1 1.2 Basic Procedure ------------------------------------------------------------------------- IV-2 2. TROUBLESHOOTING ---------------------------------------------------- IV-3 2.1 Troubleshooting Procedure ----------------------------------------------------------- IV-3 2.1.1 Malfunctions ----------------------------------------------------------------------- IV-3 2.1.2 Print-image Related ------------------------------------------------------------- IV-7 3. INSPECTION MODE ----------------------------------------------------- IV-10 3.1 Extended Functions ------------------------------------------------------------------- IV-10 3.1.1 EEPROM Reset Mode -------------------------------------------------------- IV-10 3.2 Hidden Functions (Inspection Mode) --------------------------------------------- IV-11 3.2.1 EEPROM All Area Reset Mode --------------------------------------------- IV-11...

  • Page 102: Initial Check

    CHAPTER IV TROUBLE SHOOTING INTRODUCTION Initial Check If a malfunction or incorrect print appears, make an initial check, then follow the basic procedure below: Operating environment Check if: 1) The source voltage stays within ±10% from the rating voltage shown on the rating plate.

  • Page 103: Basic Procedure

    Print head Check if: 1) The print head is installed on the carriage correctly. 2) Repeat the head purging operation several times. Basic Procedure Check the error lamps according to the procedures in the inspection mode as described later in this section. If any incorrect image is found, refer to the image defect description in this section.

  • Page 104: Troubleshooting

    TROUBLESHOOTING Troubleshooting procedure 2.1.1 Malfunctions When carrying out the countermeasures for malfunctions described in this section, check connectors for contact failure before measuring the voltage at specified connector pins. (1) No DC power supplied from PCMCIA No AC power supplied from the AC adapter Possible cause Step Check...
  • Page 105 (2) No DC power generated Possible Step Check Result Remedy cause AC power Is DC power supplied between the Follow the same check supply DC jack (+ / -)when the power plug is procedure of 1) “No DC plugged into the outlet? power supplied from PCMCIA”...
  • Page 106 (3) The carriage motor does not rotate. Possible cause Step Check Result Remedy Connection Is the Carriage motor harness Connect it securely. failure of the P4 securely connected on the Carriage motor Main PCB? harness P4 Carriage motor Disconnect the Carriage motor Replace the Carriage harness P4 from the Main PCB.
  • Page 107 (6) No paper supplied from the paper feeding slot or the straight paper path slot Possible cause Step Check Result Remedy Foreign materials Are there any foreign materials in Remove it. on the paper path. the paper feed path? Film rib Is the Film rib correctly stuck to Unstick the Film rib the Rear cover?

  • Page 108: Print-Image Related

    2.1.2 Print-image Related Trouble Action to be taken Completely blank Check the following: - If any cartridge have run out of ink. - The connection of the Head FFC cable between the Head PCB and Main PCB. - If there is any damage on the Head FFC CABLE. - The connection of the four Head FPC cables on the Head PCB.
  • Page 109 Print edges not aligned Check the following: - The alignment of vertical print lines. (Use the Service software tool software to check this.) Check the following components: - Encoder strip * If the Encoder strip is not hooked onto the mounting clips properly, correct it.
  • Page 110 Banding - Adjust the horizontal alignment from the printer driver. - Check the correct media setting is selected in the printer driver for the paper to be printed. - Adjust the amount of line feeding with the Service software tool software. - Replace the Print head.

  • Page 111: Inspection Mode

    INSPECTION MODE Extended Functions The following two extended functions will be available by holding down the specified button(s) until the all LEDs turn off while plugging in the AC adapter. 3.1.1 EEPROM User Area Reset Mode (Not necessary for service) The printer performs a reset of the user area by holding down the Power and Clean button for 3 seconds or more with the Top cover closed.

  • Page 112: Hidden Functions

    Hidden Functions (Inspection Mode) The printer goes into the inspection mode by plug in while holding down the Power and Clean button for 3 seconds or more with the Top cover open. Immediately after entering this mode, the all LEDs blink. By pressing the Power button, the below 7 inspection sub modes will be available.

  • Page 113: Sensor Check Mode 1

    3.2.2 Sensor Check Mode 1 After entering this mode, the functioning of the following sensors can be checked. The respective LED indicates the status of the following sensors. Sensor ACSF sensor This LED will be on when the ACSF is attached. Cover sensor This LED will be on when the Top cover is closed.

  • Page 114: Error Codes

    Error Codes There are 2 kinds of error code. Operator calls: Alarm LED and specific LED(s) blink alternately. Service calls: All the LEDs and specific LED(s) go ON alternately. The specific combination of ON or blinking indicates the type of the error. 3.3.1 Operator Calls : ON...
  • Page 115 3.3.2 Service Calls You may need the Service software tool, which is a software utility that allows you to read out the service call information written on the EEPROM in order to find out the details of the service error. : ON : OFF Service calls...
  • Page 116 01 07 Adjust the mechanical portion related Carriage stop position error to the Carriage ASSY. • There is foreign Replace the Encoder strip. material inside the printer. • The Carriage ASSY cannot move smoothly. • The Encoder strip is contaminated by dust. 01 08 Incorrect chassis width Adjust the mechanical portion related...
  • Page 117 Service 2 02 01 Maintenance sensor ON Check the Maintenance gear 10 is error assembled correctly. Refer to Fig. • The gears related to 3.27 in Chapter 3. paper feeding are out Replace the Purge unit ASSY. of step with the Maintenance sensor OFF position.
  • Page 118 03 04 Head thermistor Replace the Print head, Head PCB 03 05 open/short error or the Main PCB. • Hardware failure related to the head thermistor. Service 4 04 01 Flushing form L ink full Replace the Flushing form L1 & L2 error and the Flushing form R1 &...
  • Page 119 LED INDICATING THE ERROR Example: ROM error Power LED Alarm LED Ink BC LED Ink MY LED A lapse of time : ON : OFF IV-18...
  • Page 120 Appendix...

  • Page 121: Appendix A1 Head Pcb Circuit Diagram ------------------------------------------------

    PR99065 CONTENTS 1. Appendix A Appendix A1 Head PCB Circuit Diagram ------------------------------------------------ A-1 Appendix A2 Main PCB Circuit Diagram (1/3) ----------------------------------------- A-2 Appendix A3 Main PCB Circuit Diagram (2/3) ----------------------------------------- A-3 Appendix A4 Main PCB Circuit Diagram (3/3) ----------------------------------------- A-4 Appendix A5 Cartridge Sensor Circuit Diagram --------------------------------------- A-5 2.
  • Page 122 Appendix 1. Head PCB Circuit Diagram CODE UJ7041000 MPHEAD-SCH01 NAME A - 1...
  • Page 123 Appendix 2. Main PCB Circuit Diagram (1/3) CODE UJ7040000 MPMAIN-SCH01P1 NAME A - 2...
  • Page 124 Appendix 3. Main PCB Circuit Diagram (2/3) CODE UJ7067000 MPMAIN-SCH01P2 NAME A - 3...
  • Page 125 Appendix 4. Main PCB Circuit Diagram (3/3) CODE UJ7068000 MPMAIN-SCH01P3 NAME A - 4...

  • Page 126: Appendix A5 Cartridge Sensor Circuit Diagram

    Appendix 5. Cartridge Sensor Circuit Diagram CODE UJ7061000 MPCTRG-SCH01 NAME A - 5...

  • Page 127: Appendix B Head Cleaning

    Head Cleaning The procedure of the Head cleaning might change later. Note: When refurbishing the MP-21C/CDX, please note that the print head should be cleaned in accordance with the following procedure. The preparation for this refurbishing procedure needs another 1 unit of the MP printer.

  • Page 128: Cleaning The Print Head

    Put the IL tubes into the bottle containing the Initial liquid. Put the Waste ink tube into the Waste ink bottle. Run the MOBILEPAD on the PC. Click [Tool] > [Control]. Tick the check box for each 4 color and click [P-Purge] button in order to bring the Initial liquid up to the Seal rubber.
  • Page 129 Reinstall them into the printer to be cleaned. Connect the power cord and the parallel I/F cable to the printer. Turn the power on while holding down the Power and Clean button for 3 seconds or more to go into the Printer setting mode. Note: See 3.2 Hidden Functions (Inspection Mode) for details of the Printer setting mode.
  • Page 130 (11) MOBLEPAD instructs you to replace the IL cartridges BC and MY with the Ink ejection cartridges BC and MY. Then click the OK button on the MOBLEPAD in order to drain the Initial liquid out of the printer. Ink ejection cartridge MY Ink ejection cartridge BC Waste ink tube Waste ink bottle...
  • Page 131 (14) Move the Print head by hand towards the left hand side. Clean wiper head Carriage Print head Clean wiper head Print head Clean wiper head Fig. B.8 Fig. B.9 Note: When the carriage runs over the Clean wiper head, it is likely to push the Clean wiper head out of its position.
  • Page 132 (15) Remove the Clean wiper head from the printer. Wipe the ink around the ribs on the Platen cover and the rib which is placed between the Ink suction cap and the Head protector cap with a Head cleaner stick. Note: Slightly damp the Head cleaner, which is a white sponge portion of the Head cleaner stick with water.
  • Page 133 Note: Do not touch the Seal rubbers. Use rubber globes when you handle them. Insert a new Seal rubber into the adapter and refit the adapter into position in the IL cartridge. Note: To avoid unnecessary air bubble, replacement should be done below the level of the Initial liquid so that initial liquid comes up to the position of the Seal rubber.
  • Page 134 Mar. ’99 5H1002BE0...

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