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Brother LT-24CL Service Manual

Lower tray unit for hl-2400c color laser printer.
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Lower Tray Unit for HL-2400C
Color Laser Printer
SERVICE MANUAL
MODEL: LT-24CL
Feb., 1999
54S004BE0

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   Summary of Contents for Brother LT-24CL

  • Page 1

    Lower Tray Unit for HL-2400C Color Laser Printer SERVICE MANUAL MODEL: LT-24CL Feb., 1999 54S004BE0...

  • Page 2

    No part of this publication may be reproduced in any form or by any means without permission in writing from the publisher. Specifications are subject to change without notice. Trademarks: The brother logo is a registered trademark of Brother Industries, Ltd.

  • Page 3

    This service manual covers the LT-24CL lower tray unit. Information in this manual is subject to change due to improvement or re-design of the product. All relevant information in such cases will be supplied in service information bulletins (Technical Information).

  • Page 4: Table Of Contents

    CONTENTS CONTENTS 1. PRODUCT OUTLINE ................1 1.1P & F ................. 1 ARTS AMES UNCTIONS 2. SPECIFICATIONS ................2 3. INSTALLATION .................. 3 3.1 C ............3 ONDITIONS EQUIRED FOR NSTALLATION 3.1.1 Environmental conditions....................3 3.1.2 Basic layout of printer set-up location ................3 3.2 U ......................4 NPACKING...

  • Page 5

    REGULATIONS REGULATIONS LASER SAFETY (FOR 110-120 V MODEL ONLY) The printer, HL-2400C is certified as a Class I laser product under the U.S. Department of Health and Human Services (DHHS) Radiation Performance Standard according to the Radiation Control for Health and Safety Act of 1968. This means that the printer does not produce hazardous laser radiation.

  • Page 6

    REGULATIONS IEC 825 SPECIFICATION (FOR 220-240 V MODEL ONLY) The printer, HL-2400C is a Class 1 laser product as defined in IEC 825 specifications. The label shown below is attached in countries where required. CLASS 1LASER PRODUCT APPAREIL Å LASER DE CLASSE 1 LASER KLASSE 1 PRODUKT This printer has a Class 3B Laser Diode which emits invisible laser radiation in the Scanner Unit.

  • Page 7

    SAFETY INSTRUCTIONS SAFETY INSTRUCTIONS SAFETY PRINCIPLE 1) Before starting any operations, read this manual thoroughly. Especially read the safety instructions in this section carefully and ensure that you understand the contents. 2) Perform all the operations by following the procedures described in this manual. Follow all the cautions and warnings set out in the procedures and on safety labels affixed to the machine.

  • Page 8

    SAFETY INSTRUCTIONS WARNING HAZARDOUS VOLTAGE May cause serious injuries or fatal accidents. Voltage is now being supplied from the power supply of printer. There is a danger of electrical shock if you touch the active area inside the printer. Be sure to turn the power supply switch OFF and pull the plug out from the power outlet before starting maintenance work on the printer.

  • Page 9

    SAFETY INSTRUCTIONS CAUTION HAZARDOUS POWDER Toner is a fine powder which can cause a powder explosion if disposed of into a fire. Under no circumstances dispose of toner into a fire. CAUTION HAZARDOUS POWDER Toner is a fine powder which may cause irritation to the eyes and respiratory organs if inhaled.

  • Page 10

    BROTHER INDUSTRIES, LTD. MADE IN JAPAN FCC ID : B3QHLC1 BROTHER PRINTER HL SERIES COVERED This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions : (1) This device may BY ONE OR MORE FOLLOWING PATENTS:...

  • Page 11: Product Outline

    PRODUCT OUTLINE 1. PRODUCT OUTLINE Parts Names & Functions 5. LT Signal Connector 2. Paper Guide (LTU) 4. Guide Pins 3. Paper Feeding Clutch 1. Media Cassette Fig. 1 Parts Name Outline of Function Media Cassette To feed paper automatically To guide paper from the media cassette to the Paper Guide (LTU) printer.

  • Page 12: Specifications

    SPECIFICATIONS 2. SPECIFICATIONS Item Specification Applicable Printer Brother Color Laser Printer HL-2400C Normal paper: 250 sheets Cassette Capacity Transparency: 50 sheets Letter, Legal, A4, Executive, B5, Transparency, Feedable Paper Sizes Label 500 x 484 x 116 mm Dimensions (W x D x H) (139 x 134.5 x 32.2 inch)

  • Page 13: Installation

    INSTALLATION 3. INSTALLATION Conditions Required for Installation Installation conditions for the lower tray unit are the same as for the printer. Any laser beam printer is likely to be influenced by the environment of the set-up location. If the printer is set- up in an inappropriate location, the printer may not perform as expected.

  • Page 14: Unpacking

    INSTALLATION Unpacking Follow the unpacking steps below referring to Fig.3. 1) Remove the binding tape from the top of the package. 2) Take the side covers R/L out of the box. 3) Remove the upper packing carton. 4) Take the lower tray unit (with media cassette and set-up guides R/L already installed) out of the box.

  • Page 15: Installation Procedures

    INSTALLATION Installation Procedures 3.3.1 Install the printer onto the lower tray unit 1) Place the lower tray unit on a solid, flat surface where the printer is to be installed ensuring that the conditions in sections 3.1.1 3.1.2 are complied with. 2) Check that the set-up guides R/L are fixed onto the lower tray unit.

  • Page 16

    INSTALLATION 4) Check the three alignment guide pins on the lower tray unit. Guide pins Fig. 6 5) Two people should be used to lift up the printer and place it onto the lower tray unit as shown in Figure 7. WARNING The printer weighs approximately 32kg, so it is too heavy for one person to carry.

  • Page 17

    INSTALLATION 6) Remove the set-up guides R/L from the unit. Set-up Guide (L) Set-up Guide (R) Fig. 8 7) Insert the metal fixtures into both sides of the lower tray unit from above. 8) Tighten the screws to secure the fixtures. Printer Screw Lower Tray Unit...

  • Page 18: Connect The Lt Signal Connector Into The Printer

    INSTALLATION 3.3.2 Connect the LT signal connector into the printer 1) Remove the LT connector cover (U) from the printer. 2) Connect the LT signal connector into the connector of the printer. NOTE: Connect the LT signal connector into the printer connector correctly until it clicks as it locks into position.

  • Page 19: Install The Covers

    INSTALLATION 3.3.3 Install the covers 1) Install the side covers R/L onto both sides of the lower tray unit. Cover (L) Cover (R) Fig. 11 3.3.4 Relocating the printer / Test print 1) If it is necessary to relocate the printer with the lower tray unit installed, hold it under the lower tray unit, it should only be moved by two adults and should be kept level at all times.

  • Page 20: Maintenance

    MAINTENANCE 4. MAINTENANCE Daily Maintenance You need not daily maintenance for the lower tray unit such as cleaning. Periodic Maintenance You need not to replace any parts periodically. However, it is recommended for high performance of paper feeding that the following parts are replaced in accordance with the periodic replacement cycle of printer parts.

  • Page 21: Disassembly Procedure

    DISASSEMBLY 5. DISASSEMBLY When disassembling the lower tray unit, follow the instructions in the sections below referring to Figure 13; Back cover (LTU) Paper guide (L) Side cover (L) Paper guide (LTU) Paper Feeding Roller OHP Sensor Base cover LTU (L) Front cover (LTU) Paper guide Paper Sensor...

  • Page 22: Paper Sensor / Ohp Sensor

    DISASSEMBLY Paper Sensor (PEL) / OHP Sensor (OHPL) 1) Remove the BT4x8 screw (1 pc.) to remove the back cover (LTU). 2) Remove the screws (2 pcs.) to remove the paper guide (LTU). 3) Remove the ST4x6 screws (2 pcs.) to remove the paper guide (L). 4) Remove the ST4x6 screws (2 pcs.) to remove the paper guide (UL) assembly.

  • Page 23: Paper Feeding Roller / Separation Pad

    DISASSEMBLY Paper Feeding Roller / Separation Pad 1) Remove the BT4x8 screw (1 pc.) to remove the back cover (LTU). 2) Remove the screws (2 pcs.) to remove the paper guide (LTU). 3) Remove the ST3x6 screws (2 pcs.) to remove the paper guide (L). 4) Remove the ST3x6 screws (2 pcs.) to remove the paper guide (UL).

  • Page 24: Clearing Paper Jams

    DISASSEMBLY 6. CLEARING PAPER JAMS Paper Feeding Jam 1) Pull out the media cassette (L). 2) Remove the paper remaining inside the printer. 3) Open the rear cover to check no paper remains. 4) Close the rear cover. Inner Jam / Outer Jam Both inner jam and outer jam actually occur inside the printer.

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