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Epson DLQ-3000 Service Manual

Terminal printer
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EPSON TERM NAL PR

SERVICE MANUAL

EPSON

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Summary of Contents for Epson DLQ-3000

  • Page 1: Service Manual

    NTER EPSON TERM NAL PR DLQ”3000 SERVICE MANUAL EPSON...
  • Page 2 All efforts have been made toerwuretheaccuracyof the contents of this manual. However, should any errors be detected, SEIKO EPSON would greatly appreciate being informed of them. The above notwithstanding SEIKO EPSON can assume no responsibility for any errors in this manual or the consequence thereof.
  • Page 3 THE POWER SUPPLY CABLE MUST BE CONNECTED, USE EXTREME CAUTION IN WORKING ON POWER SUPPLY AND OTHER ELECTRONIC COMPONENTS. REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REPAIR TECHNICIAN. MAKE CERTAIN THAT THE SOURCE VOLTAGE IS THE SAME AS THE RATED VOLT- AGE, LISTED ON THE SERIAL NUMBER/RATING PLATE.
  • Page 4 Includes a step-by-step guide for product disassembly and assembly. CHAPTER 4. ADJUSTMENT Includes a step-by-step guide for adjustment. CHAPTER 5. TROUBLESHOOTING Provides Epson-approved techniques for adjustment. CHAPTER 6. MAINTENANCE Describes preventive maintenance techniques and lists lubricants and adhesives required to service the equipment. APPENDIX Describes connector pin assignments, circuit diagrams, circuit board component layout and exploded diagram.
  • Page 5 REVISION SHEET Issue Date Revision Page Revision June 1,1994 1st issue Rev. A November 22,1994 2nd issue REV.B...
  • Page 6 TABLE OF CONTENTS CHAPTER 1. PRODUCT DESCRIPTION OPERATING PRINCIPLES CHAPTER 2. DISASSEMBLY AND ASSEMBLY CHAPTER 3. ADJUSTMENT CHAPTER 4. TROUBLESHOOTING CHAPTER 5. MAINTENANCE CHAPTER 6. APPENDIX...

  • Page 7: Table Of Contents

    CHAPTER 1 Product Description Table of Contents 1.1 FEATURES 1.2 SPECIFICATIONS 1.2.1 Hardware Specifications ........1-2 1.2.1.1 Paper Handling Specifications .
  • Page 8 List of Figures Figure Exterior View of the DLQ-3000......1-1 -2. Pin Configuration ........1-2 Figure Figure -3.

  • Page 9: Features

    Product Description DLQ-3000 Service Manual FEATURES DLQ-3000 is 24-pin serial dot-matrix and flat-bed type impact printer. The main features are: Optional color printing using the optional color ribbon (black, magenta, cyan, yellow). Use of ESC/P2 control codes Printing speed 120 Cps...

  • Page 10: Specifications

    DLQ-3UO0 Service Manual Product Descri~tion 1.2 SPECIFICATIONS This section provides detailed information about the DLQ-3000. 1.2.1 Hardware Specifications Serial impact dot matrix Printing method: Pin configuration: 24 wires 0.0079 inch (0.2 mm) Pin diameter: 0.86 mm=l/30’’+l/2160” 6 x 0 . 0 2 3 m m ( = l - 1 0 8 0 ” ) ~ I j ~ ~6x0.023mm(=14080”) ! &l–...

  • Page 11: Paper Specifications

    Product Description DLQ-3000 Service Manual The paper thickness lever must be set at the proper position as shown below. Table 1-2. Paper Thickness Lever Paper Thickness Lever Position 0.06 mm -0.11 mm (0.0024 in. -0.0043 in.) 0.11 mm -0.15 mm (0.0043 in. -0.0059 in.) 0.15 mm -0.19 mm (0.0059 in.
  • Page 12 DLQ-3000 Service Manual Product Description Table 1-6. Continuous Paper (Single Sheet and Multi-part) Specifications Width 101-406 mm [4 - 16 in.1 Single sheet length 101- 559 mm [4 - 22 in.] 1 original+ 5 copies (using fabric ribbon) Copies 1 original only (using film ribbon) 0.065 mm - 0.46 mm [0.0025 in.

  • Page 13: Ribbon Catiridge Specifications

    Product Description Service Manual DLQ-3000 101.6 mm -254 mm [4” - 10”] max. 345mm [13.6”] max. T-K? 9mm [0.35”] min. Printable area 9mm [0.35”] min. 4.2mm [0,17”] min. - - - - --------------- 4.2mm [0.17”] Printable area min. Figure 1-4. Printable Area for Continuous Paper 1.2.1.3 Ribbon Cartridge Specifications Ribbon cartridge (black): No.

  • Page 14: Electrical Specifications

    DLQ-3000 Service Manual Product Description Electrical Specifications 1.2.1.4 Table 1-8. Electrical Specifications 120 V Version 230 V Version Description 120 VAC I Rated voltage 220-240 VAC Input voltage range 103.5-132 VAC 198-264 VAC Rated frequency range 50- 60 t-fz Input frequency range 49.5- 60.5 tiz...

  • Page 15: Firmware Specifications

    Product Description DLQ-3000 Service Manual 1.2.2 Firmware Specifications ESC/P2 Control code: Legal and 14 internatioml character sets Character sets: Italic table Standard model: (Us.) PC437 PC850 (Multilingual) PC860 (Portuguese) PC863 (Canadian-French) PC865 (Nordic) BRASCII (Brazilian Portuguese) Abicomp (Brazilian Portuguese) PC437 Greek (Greek)
  • Page 16 Product Description DLQ-3000 Service Manual Table 1-9. Resolution Printing Mode Horizontal Density Vertical Density Adjacent Dot Print 90 dpi 180 dpi High speed draft 120 dpi 180 dpi Draft 240 dpi 180 dpi Draft condensed 360 dpi 180 dpi 60,80,90 or 120 dpi...
  • Page 17 Product Description DLQ-3000 Service Manual These modes are selected by several conditions as follows flowchart; Prmthead t e m p . ‘ E s >12” C? ‘ E s MODE6 MODE5 & MODE2 Black color print? & ‘& MODE O Paper thickness ——...

  • Page 18: Interface Overview

    DLQ-3000 Service Manual Product Description 1.3 INTERFACE OVERVIEW The printer provides an 8-bit parallel interface and serial interface as standard. Moreover, it is possible to interface to various computers using the optional type-B interface board. This section describes the specifications of the standard interfaces.
  • Page 19 Product Description DLQ-3000 Service Manual Table 1-11 shows the connector pin assignments and signal functions for the 8-bit paralIel interface. Table 1-11. Signal and Connector Pin Assignments for Parallel Interface Description Name Pin No. Signal ::;”% ‘ Strobe pulse. Input data is latched at the falling STROBE edge of this signal.

  • Page 20: Serial Interface Specifications

    DLQ-3000 Service Manual Product Description 1.3.2 Serial Interface Specifications RS-232C serial Data format: Asynchronous Synchronization: By DTR (REV) signal or X-ON/OFF protocol Handshaking Table 1-12. Serial Interface Handshaking X-ONM-OFF DTR Signal Description Protocol When the number of bytes remaining in the input buffer...
  • Page 21 Product Description Service Manual DLQ-3000 See Figure 1-7. Data transmission timing: T ,, (+V) - - - - - - (-v) (+V) (-v) Parly BiI Stari Bit DTR Handshaking ‘:”[’12:13[4[5161i (+V) – Bt... (-v) Start Bt Parity Bit (+V) (-v) Start Data Bii Start Data Bit Bt ( X - O F F )

  • Page 22: Optional Interface

    Product Description DLQ-3000 Service Manual 1.3.3 Optional Interface Type-B and Type level 2 optional interfaces are available except for C82305 and C82306 serial interface. 1.3.4 Interface Selection The printer has 3 interfaces; the parallel interface, serial interface and optional interface. These interfaces are selected manually by SelecType or selected automatically.

  • Page 23: Operating Instructions

    Product Description Sarvice Manual DLQ-3000 1.4 OPERATING INSTRUCTIONS This section describes the control panel operation functions, self-test, hexadecimal dump, and printer initialization methods, etc. 1.4.1 Control Panel Operation On the control Panel, there are five non-locking switches, four LEDs, and a 16-column liquid crystal display (LCD) &...
  • Page 24 DLQ-WOO Service Manual Product Description Table 1-14. Paper Feeding Functions Friction Feed Tractor Feed Operations Not Paper Out Paper Out State Not Paper Out Paper Out State Load continuous Line feed Load a sheet (*2) Line feed (*1) Press LF/FF shortly paper Load continuous Press LF/FF for a...

  • Page 25: Printer Stateand Lcd/Led Indication

    Product Description DLQ-3000 Service Manual 1.4.2 Printer State and LCD/LED Indication The table below shows the LCD messages and LED conditions that indicate the printer states except for SelecType. When the printer gets into more than one state, the printer indicates the highest priority state.

  • Page 26: Self-Test

    DLQ-3000 Service Manual Product Description 1.4.3 Self-test This section explains how to run the self-test. Hold down the LF/FF button and turn on the printer to start the self-test. If paper is not loaded, the printer attempts to load paper.

  • Page 27: Selectype Function

    Product Description DLQ-3000 Service Manual SelecType Function 1.4.6 is equipped with a SelecType function to change default settings. DLQ-3000 1.4.6.1 SelecType Phase Transitions The figure below shows the SelecType phase transitions. Standby State The entry to SelecType 2 Figure 1-9. SelecType Phase Transitions 1.4.6.2 SelecType 1 and 2 Operations...

  • Page 28: Font And Pitch Selection Operations

    DLQ-3000 Service Manual Product Description 1.4.6.3 Font and Pitch Selection Operations When the font or pitch selection phase starts, the currently selected default font or default pitch is displayed with “*”. Press the ~ (next) and ? (previous) button to the desired font or pitch, and press the+ (enter) button to select it.

  • Page 29: Printerstatus And Buzzer

    Product Description DLC)-3000 Service Manual 1.4.8 Printer Status and Buzzer The DLQ-3000 is equipped with a buzzer on the control board. The buzzer sounds as follows: Paper out error: . . . Release lever operation error: ---– ---— Fatal error: Illegal operation in SelecType: .

  • Page 30: Default Settings

    DLC?-3000 Service Manual Product Description 1.4.10 Default Settings When users change, they can be refer to the default setting at the time of initialization of this printer. These standard settings are shown below. Table 1-16. Initialize Default Settings Font Roman Pitch ct)i Character Table...

  • Page 31: Printer Mechanism

    CHAPTER 2 Operating Principles Table of Contents 2.1 PRINTER MECHANISM OPERATION 2.1.1 Printing Mechanism......... 2-1 2.1.2 Carriage Mechanism .
  • Page 32 List of Tables Printhead Specifications ........2-2 Table 2-1 Table 2-2 Specifications of the Carriage Motor and Home Position Sensor .

  • Page 33: Printer Mechanism Operation

    Operating Principles DLQ-3000 Service Manual 2.1 PRINTER MECHANISM OPERATION This section describes the M-5L60 printer mechanism and explains how it works. 2.1.1 Printing Mechanism The printer mechanism is composed of the Printhead, ink ribbon, and ribbon mask. The Printhead is a 24-pin head employing impact dot printing. 24 dot wires are aligned in a 12 x 2 diamond layout inside the Printhead.
  • Page 34 DLQ-3000 Service Manual Operating Principles sequence used to print a dot has been described above. The mechanism is equipped with a built-in thermistor for head temperature detection. The temperature detected by the thermistor is converted to an electric signal and fed back to the control circuit.

  • Page 35: Carriage Mechanism

    Operating Principles DLQ-3000 Service Manual 2.1.2 Carriage Mechanism The carriage mechanism is composed of the carriage motor and home position sensor. This section also describes the exterior cooling fan. The high and low ends of the carriage is supported by the two carriage guide shafts. Since stepping motor is used as carnage motor, the carriage can move to or stop at any position.
  • Page 36 DLQ-3000 Service Manual Operating Principles Table 2-2. Specifications of the Carriage Motor and Home Position Sensor Carriage Motor Specifications 4-phase 200-pole HB type stepping motor Type 35 VDC t 10Yo (31.5 to 38.5 ohms) Power Supply Voltage 1.1 ohms * 10?!o(perphase,at25‘C)

  • Page 37: Platen Gap Mechanism

    Operating Principles DLQ-30tM Service Manual 2.1.3 Platen Gap Mechanism The DLQ-3(XN is equipped with a platen gap adjustment mechanism which allows setting of the gap (between the platen and printhead) for paper of any thickness. The cross section of the carriage guide shaft which supports the front of the carnage is oval-shaped. The PG (Platen Gap) adjust lever (the left lever as seen from the front) is fixed to the carnage guide shaft with the carnage guide fixing nut, and these two interlock.

  • Page 38: Ribbon Feed/Shift Mechanism

    DLQ-3000 Service Manual Operating Principles 2.1.4 Ribbon Feed/Shift Mechanism This mechanism is composed of the ribbon feed and ribbon shift mechanisms. The former ,#’-!. mechanism winds up the ribbon inside the ribbon cartridge, and the latter shifts the ribbon cartridge back and forth. The switching operation corresponds to the rotation direction of the CS/RF motor as described below.
  • Page 39 Operating Principles DLQ-3000 Service Manual Ribbon Brake Spring Ribbon Cartridge Ribbon Feed Ribbon Hold anetary Gear Ribbon Drive /RF Motor Figure 2-4. Ribbon Feed Mechanism e Ribbon Shift Mechanism > Both the monochrome and color ribbons are 1 inch wide. The film ribbon is 8 mm wide. The monochrome ribbon and the film ribbon are entirely black, and the color ribbon is separated into 4 different colored equal-width bands.
  • Page 40 Operathw Princides DLQ-3000 Service Manual Table 2-7. CS/RF Motor Rotation and Gearing Sequence (2) c . . , . . > , ,, . - . . CS/RF Motor Rotation Linkage Direction CS/RF Motor Pinion Gear+ Ribbon Feed Gear (A)+ Ribbon C.w.
  • Page 41 Operating Principles DLQ-3000 Service Manual Table 2-9. CS Sensor Description Item Photo-interrupter Method Power Supply Voltage 5 VDC k !Wo 30 V or less Collector Explosion Proof I Open Collector ! OUtDUt Table 2-10. Color Ribbon Sensor Item Description Mechanical Switch...

  • Page 42: Paper Feed Mechanism

    DLQ-3000 Service Manual Operating Principles 2.1.5 Paper Feed Mechanism The mechanism is composed of the paper feed motor, tractor, PEW detector, loading sensor, ‘% release sensor, and paper shift mechanism. Figures 2-7, 2-8, and 2-9 show the core of the mechanism, paper feed sensor, and release mechanism.
  • Page 43 Operating Principles DLQ-3000 Service Manual CS Reduction Gear Ribbon Feed Gear (B) “B;< z ~~cS Drive Lever CS Drive Cam - - - Ribbon Feed Gear (A) C&i Sensor ‘ CS Motor Flag ———— —. —B— c— M — Y ““—...
  • Page 44 DL12-3000 Service Manual Operating Principles Table 2-14. Paper Feed Sensor Specifications PEW Detector and Paper Loading Sensor (Common Spec.) 6-.’:. Photo-reflector Detection Element Photoelectric Transfer (Before the paper end is detected, the detector voltage is sampled and the voltage is compared with Detection Method the voltage measured after the paper-end detection to judge whether or not paper is loaded.
  • Page 45 Operating Principles DLQ-3000 Service Manual <Release Mechanism> The mechanism is used to switch the paper feed mode by setting the release lever. This operation switches the paper feed motor power transmission and paper feed rollers. The lever rotation is converted into horizontal and vertical linear motion.

  • Page 46: Power Circuit

    DLQ-3000 Service Manual Operating Principles 2.2 POWER CIRCUIT Figure 2-9 provides a block diagram of the power supply circuit. The primary structure of the BOARD ASSY., C124 PSB and C124 PSE units is the same. The lower portion of each block gives the location of the element.

  • Page 47: Power Supply Circuit Operation

    Operating Principles DLQ-3000 Service Manual 2.2.2 Power Supply Circuit Operation The AC power source is connected to the inlet, and voltage is provided to the power supply board via the power switch and fuse. The AC voltage is full-wave rectified using diode bridge DB1 and smoothed.

  • Page 48: Control Circuit

    DLQ-3000 Service Manual Operating Principles 2.3 CONTROL CIRCUIT Figure 2-10 gives the control circuit block diagram for the DLQ-3000. The BOARD ASSY., C124 MAIN is located at the center. The printer uses a 16-bit internal 8-bit external l-chip CPU p.PD70433/V55PI (IC1O) as the main CPU, with a clock frequency of 24.8832 MHz (CR1).
  • Page 49 Operating Principles DLQ-3000 Service Manual The functions of the main ICS are as follows. Main CPU I.LPD70433/V55PI (IC1O) This is the main CPU, which receives data from the host computer directly (parallel) or via the gate array E05A88 (serial) and store the data in the D-RAM input buffer.

  • Page 50: Interface Circuit

    DLQ-3000 Service Manual Operating Principles 2.3.1 Interface Circuit Figure 2-11 is a block diagram of this circuit. This section describes the data set interface for the paralIel and serial interfaces of the DLQ-3000. Parallel Interface: This printer has a IEEE-1284 parallel interface level 1 device hardware that will provide bi- directional interface in the future.

  • Page 51: Reset Circuit

    Operating Principle DLQ-3000 Service Manual 2.3.2 Reset Circuit Figure 2-12 is a block diagram of the reset circuit. IC PST523DTM (IC 14) is a power on reset IC which generates a reset signal when the power source voltage becomes unstable due to power on/off switching.
  • Page 52 Operating Principles DLQ-3000 Service Manual 2.3.4 Converter Detection Circuit ,. ., Figure 2-14 is a block diagram of the circuit. The CPU contains a built-in 8-bit A/D converter. All detection terminals are used to detect transit analog signals. Table 2-19. A/D Converter Signal Assignment...

  • Page 53: Detector Circuit For General Ports

    Operating Principles DLQ-3000 Service Manual 2.3.5 Detector Circuit for General Ports Figure 2-15 is a block diagram of detection signal assignment for general ports. All completely of the sensor signals of the mechanism are assigned to each of the general ports of the CPU as follows.

  • Page 54: Cs/Rfmotorcontroller/Driver Circuit

    DLQ-3000 Service Manual Operating Principles 2.3.6 CS/RF Motor Controller/Driver Circuit Figure 2-16 shows a block diagram of the color shift and ribbon feed (cS/RF) motor driver arcuit. The CS/RF motor is a PM (permanent magnet) stepping motor, and is driven with 1-1 or 2-2 phase excitation in proportion to the desired rotational speed.

  • Page 55: Paper Feed Motor Controller/Driver Circuit

    Operating Principles DLQ-3000 Service Manual 2.3.7 Paper Feed Motor Controller/Driver Circuit Figure 2-17 shows a block diagram of the paper feed motor controller/dnver circuit. The paper feed motor is a hybrid type stepping motor, and is driven with 2-2 phase excitation.

  • Page 56: Carriage Motor Controller/Driver Circuit

    Operating Principles DLQ-3000 Service Manual 2.3.8 Carriage Motor Controller/Driver Circuit The carriage motor is a hybrid type stepping motor which is driven with 1-2 phase or 2-2 phase ‘# excitation in proportion to the desired rotational speed. This motor can be rotated in both directions and stopped at any position.
  • Page 57 Operating Principles DLQ-3000 Service Manual Bi-d Adjustment Function > The bidirectional printing adjustment is used to align dots vertically for bi-directional printing. This is accomplished by delaying the print timing pulse for a line on which the carriage moves from the 136th column to the Ist, using the print timing pulse when the carriage moves from the 1st to 136th column as a reference.

  • Page 58: Printhead Controller/Driver Circuit

    DLQ-3000 Service Manual Operating Principles 2.3.9 Printhead Controller/Driver Circuit Figure 2-19 shows a block diagram of the Printhead controller/driver circuit. This printer is equipped with 24 head coils (12x lines), and the driver circuit is a constant current coil driver circuit.

  • Page 59: Control Panel Circuit

    Operating Principles DLQ-3000 Service Manual 2.3.10 Control Panel Circuit Figure 2-21 shows a block diagram of the control panel circuit. E05A89 is agate array of the panel I/F. LCD driver I/F, the LED driver and the SW’s input circuit are built-into the gate array. The serial interface is used between the control panel and the main board.
  • Page 60 CHAPTER 3 Disassembly and Assembly Table of Contents 3.1 OVERVIEW 3.1.1 Precaution for Disassembling the Printer......3-1 3.1.2 TOOIS .
  • Page 61 List of Figures <.. Figure 3-1. Disassembly and Assembly ....... 3-4 Figure 3-2.

  • Page 62: Overview

    DLQ-3000 Service Manual Disassembly and Assemb/y 3.1 OVERVIEW The following sections describe disassembly and assembly procedures for the DLQ-3000. Several notes on transporting the unit are also provided. 3.1.1 Precaution for Disassembling the Printer Read the following warnings before assembly or disassembly.

  • Page 63: Service Checks After Repair

    Disassembly and Assembly DLQ-3000 Service Manual 3.1.3 Service Checks After Repair When printer components are to be sent for servicing, first use the checklist shown in Table 3-2 to note the current state of the components. This cheddist provides a record to make servicing and shipping more efficient.

  • Page 64: Specifications For Screws

    Disassembly and Assembly DLQ-3000 Service Manual 3.1.4 Specifications for Screws In the following sections, abbreviations are used for small parts, such as screws and washers. Tables 3-3 list these abbreviations. Table 3-3. Abbreviations Used for Screws Part Name Addreviaiton Cross-Bind head Screw...
  • Page 65 Disa-mblv and Assemblv Sewice Manual DLQ-3000 DISASSEMBLY ASSEMBLY This section describes the procedures for disassembling and assembling the main components of the printer. When the procedure for installing a component into the printer is simply the reverse of the procedure for removing the component, no description of how to install the component is given. hy points of speaal concern when assembling or adjusting a component part are given after the description of the procedure.

  • Page 66: Removing The Printhead

    DLQ-3000 Service Manual Disassembly and Assembly 3.2.1 Removing the Printhead ‘ 3.2.1.1 Removing the Printhead The printhead should be changed by performing the following procedure. Step 1 : Open the COVER ASSY.,PRINTER and remove the SHEET GUIDE ASSY.,FRONT. Step 2: Remove the ribbon cartridge.

  • Page 67: Removing The Cover,Rear

    Dkaskembly and Assembly DLQ-3000 Service Manual 3.2.2 Removing the COVER,REAR Step 1 : Remove the two screws CBS (M3 x 12) which secure the COVER,CONNECTOR, (;” ., UPPER. Then remove the COVER,CONNECTOR,UPPER. Step 2: Remove the screw CBB (M3 x 12) and CBB (M3 40) which secure the COVER, REAR.

  • Page 68: Removing The Circuit Board

    D~ Wld ASSO~ DLQ-3000 Servioe Manuat Removing the Circuit Board 3.2.3 The &fit DLQ-3000 are composed of the BOARD ASSY., C124 W & ~ (control MS in the ctit board) and the BOARD ASSY., C124 PSB/PSE (power supply board). The two boards can be removed by simply removing the COVER,REAR.

  • Page 69: Removing The Board Assy.,Power Supply

    DLQ-3000 Service Manual Disassembly and Assembly Removing the BOARD ASSY., POWER SUPPLY 3.2.3.2 Remove the COVER,REAR. (Refer to Section 3.2.2.) Step 1 : Remove the two screws CBS (M3 x 6) which fix the BOARD ASSY., POWER SUPPLY Step 2: to the SHIELD PLATE.

  • Page 70: Removing The Control Panel

    DLQ-3000 Service Manual Disassembly and Assembly Removing the Control Panel 3.2.4 Step 1 : Open the printer cover. Step 2: Disengage a hook of the control panel from the HOUSING ASSY., UPPER on the inside of the HOUSING ASSY., UPPER.

  • Page 71: Removing The Housing Assy.,Upper

    DLC#-3000 Service Manual Disassembly and Assembly Removing the HOUSING ASSY.,UPPER 3.2.5 Step 1 : Remove the screw CBB (M3 12) which secures the COVER,SHIELD,REAR and remove it. Remove the COVER,REAR. (Refer to Section 3.2.2.) Step 2 : Step 3 : Remove the KNOB, LEVER,RELEASE and CAP,G,ADJUST.

  • Page 72: Removing The Printer Mechanism

    Disassembly and Assembly DLQ-3000 %rvice Manual Removing the Printer Mechanism 3.2.6 The figure below shows the removal procedure for the main components of the DLQ-3000. 3.2.6.1 Removing the Printer Mechanism 3.2.6.2 3.2.6.3 Removing Removing the DETECTOR ASSY.,HP the SENSOR ASSY.,LOAD 3.2.6.5 3.2.6.4 Removing...

  • Page 73: Figure 3-10. Removing The Printer Mechanism

    DLQ-3000 Service Manual Disassembly and Assemb/y 3.2.6.1 Removing the Printer Mechanism Remove the HOUSING ASSY.,UPPER. (Refer to Section 3.2.5.) Step 1 : Discomect the three FFCS from the mechanism junction board. Step 2: Remove the two screws CBS (M3 x 6) from both sides of the frame which fix the printer Step 3: mechanism to the left and right GRANDING PLATEs.

  • Page 74: Removing The Detector Assy.,Hp

    Disassembly and Assembly DLQ-3000 Service Manual 3.2.6.2 Removing the DETECTOR ASSY.,HP Remove the printer mechanism. (Refer to Section 3.2.6.1.) Step 1 : Push the notches (black) from the rear of the FRAME,CR. Then remove the DETECTOR Step 2 : ASSY.,HP.

  • Page 75: Removing The Detector Assy.,Pg

    DLQ-30tM Service hkmual Disassembly and Assembly 3.2.6.4 Removing the DETECTOR ASSY.,PG Remove the printer mechanism. (Refer to Section 3.2.6.1.) Step 1 : Set the LEVER, G, ADJUST to 9. Step 2: Step 3: From the rear of the FRAME ASSY., LEFT, push the two notches securing the DETECTOR ASSY., PG using a screwdriver, and remove the DETECTOR ASSY, PG.

  • Page 76: Removing The Motor Assy.,Pf

    Disassembly and Assembly DLQ-WWO Service Manual 3.2.6.6 Removing the MOTOR ASSY.,PF Remove the printer mechanism. (Refer to Section 3.2.6.1.) Step 1 : Step Remove the two saews CS(P4) (M3 x 6) securing the MOTOR ASSY.,PF. Remove the SHAfl,PF,TENSION securing the MOTOR ASSY.,PF, then remove the Step 3: MOTOR ASSY.,PF.

  • Page 77: Removing The Motor Assy.,Cs

    DLQ-3000 Service Manual Disassembly and Assembly 3.2.6.8 Removing the MOTOR ASSY.,CS Remove the printhead. (Refer to Section 3.2.1.) Step 1 : Move the CARRIAGE AS!3Y. completely to the right. Step 2: Move the CARRIAGE ASSY. to the left, pull off the connectors from the BOARD Step 3: ASSY.,CS, and remove the MOTOR ASSY.,CS.

  • Page 78: Removing The Lever Assy.,Eject

    Disassembly and Assembly DLQ-3UO0 Service Manual Removing the LEVER ASSY.,EJECT 3.2.6.9 Remove two EXTENSION SPRING~53 from both ends of the LEVER ASSY., EJECT. Step 1 : Remove the SENSOR ASSY.,LOAD. (Refer to Section 3.2.6.3.) Step 2: Remove the E ring (#3) which fixes the LEVER ASSY.,EJECT to the FRAME,ASSY., Step 3 : RIGHT.
  • Page 79 DLQ~OOO Service Manual Disassembly and Assembly Remove the SPRING,CR,GUIDE, LOWER pushing the LEVER,PARALLELS-IMT Step between the FRAME,CR and the FRAME ASSY.,RIGHT. ‘t,> SPRING, CR, GUI DE, LOWER E,CR L, SHAFT Figure 3-21. Removing the SPRING,CR,GUIDE, LOWER Remove the BELT TENSION SPRING to loose the tension of the TIMING BELT,CR. Step 5: Then remove the TIMING BELT,CR from the pulley of the MOTOR ASSY.,CR.

  • Page 80: Removing The Carriage Assy

    DLQ-3000 Service Manual Disassembly and Assemb/y Attach the TIMING BELT,CR as 3-10 teeth of the TIMING BELT appear. CARRIAGE ASSY. 3-10 teeth TIMING BELT,CR Figure 3-23. Attaching the TIMING BELT,CR Remove the two HEXAGON NUTS WITH OW(M4) securing the SHA~,CR,GUIDE, Step UPPER to the FRAME ASSY.,LEFT and RIGHT.

  • Page 81: Removing The Detector Assy.,Cs

    DLQ-3000 Service Manual Disassembly and Assembly 3.2.6.11 Removing the DETECTOR ASSY.,CS Remove the pnnthead. (Refer to Section 3.2.1.) Step 1 : Step 2: Remove the CARRIAGE ASSY. (Refer to Section 3.2.6.10.) Detach six notches on the rear of the carnage. Then remove the HOLDER, RIBBON, Step 3 : —...

  • Page 82: Figure 3-27. Cam,Cs Positioning For Reassembly

    Disassembly and Assembly DLQ-3000 Service Manual It is possible to remove the BOARD ASSY.,CA without removing the CARRIAGE ASSY. But it is necessay to notice the following. When the carriage cover is attached for reassembly, set the CAM,CS so that the follow section faces the CS detector.

  • Page 83: Removing The Platen Assy

    Disassembly and Assembly DLQ-3000 Service Manual 3.2.6.13 Removing the PLATEN ASSY. Step 1 : Remove the printer mechanism. (Refer to Section 3.2.6.1.) Step 2: Remove the CARRIAGE ASSY. (Refer to section 3.2.6.10.) Make loose two screws CB (P4) and the SHAFT’,PF,TENSION securing the MOTOR Step 3: ASSY.,PF to the FRAME ASSY.,RIGHT.

  • Page 84: Figure 3-31. Removing The Platen Assy

    Disassembly and AssemblY DLQ-3000 ~rvice Manual Remove the PLATEN SHAH HOLDER of the right end of the SHAFT,LOAD,D~E. Step 6: Step 7: Remove four screws CBS (M3 x 6) securing the PAPER GUIDE to the FRAME ASSY.,LEFT and RIGHT. And remove the PAPER GUIDE upward. Remove the right PLATEN SHA~ HOLDER of tie pLATE ASSYCJ and remove tie Step 8 : PLATEN ASSY.

  • Page 85: Removing The Housing Assy.,Lower

    DLC?-3000 Service Manual Disassembly and Assembly 3.2.7 Removing the HOUSING ASSY.,LOWER Remove the COVER,REAR. (Refer to Section 3.2.2.) Step 1 : Remove the circuit board.( Refer to Section 3.2.3.) Step 2: Remove the control panel. (Refer to Section 3.2.4.) Step 3: Remove the HOUSING ASSY.,UPPER.

  • Page 86: Reloading The Printer Control Sofiware

    DLQ-3000 !%rVice Oiaasmbfy and Assembly hkWIUd 3.3 RELOADING THE PRINTER CONTROL SOFTWARE This section describes the procedure used to reload the printer control software to the 128 K byte Flash-EEPROM. Using this program reload mode , the printer control software can be changed completely.
  • Page 87 CHAPTER 4 Adjustment Table of Contents 4.1 OVERVIEW 4.2 PLATEN GAP ADJUSTMENT 4.3 BELT TENSION ADJUSTMENT 4.4 DEFAULT, MACHINE INFORMATION SEITING AND BI-DIRECTIONAL ADJUSTMENT 4.4.1 Default and Machine Information Setting ......4-5 4.4.2 Bi-directional Adjustment .

  • Page 88: Overview

    Adjustment DLQ-3000 Service Manual 4.1 OVERVIEW The following sections describe the adjustments required when reassembling the DLQ3000. After any part concerned is disassembled or replaced for maintenance/repair, be sure to adjust the printer to guarantee correct operation. Table 4-1. Adjustment Items...

  • Page 89: Platen Gap Adjustment

    DLQ-3000 Service Manual Adjustment 4.2 PLATEN GAP ADJUSTMENT This adjustment consists of parallelism adjustment and platen gap adjustment. The platen and head locus are adjusted to be parallel. The LEVER,PARALLEL~HAFT is eccentric toward the SHAIT,CR,GUIDE. When the LEVER,PARALLEL,SHAFT rotates, the right end of it moves up and down.
  • Page 90 Adjustment DLQ-3000 Service Manual platen gap adjustment should be performed as follows procedure. Remove the HOUSING ASSY.,UPPER. (Refer to Section 3.2.5.) Step 1 : Remove the printhead. (Refer to Section 3.2.1.) Step 2: Remove the HOLDER,RIBBON,MASK together with the RIBBON MASK. (Refer to Step 3 : Section 3.2.1.2.)

  • Page 91: Belt Tension Adjustment

    DLQ-3000 Service Manual Adjustment Table 4-2. Platen Gap Adjustment Value LEVER, G, ADJUST position 1 Adjustment Value 0.37 I 0.02 mm LEVER, G, ADJUST position 2 Reference Value 0.43 * 0.02 mm Move the carriage so that the top of the head meets the right end of the platen.

  • Page 92: Default, Machine Information Seiting And Bi-Directional Adjustment

    Adjustment DLQ-3000 Service Manual 4.4 DEFAULT, MACHINE INFORMATION SEITING AND BI-DIRECTIONAL ADJUSTMENT 4.4.1 Default and Machine Information Setting The procedure below is necessary when the DLQ-3000 main board is replaced. Step 1 : Connect the printer to the PC. Turn the printer on.
  • Page 93 DLQ-3000 Service Manual Adjustment Table 4-3. Default Setting Function SW&Valid Add Function SW& Valid Graphic Print Direction Bi-directional Roman FONT \ IOcpi II Message Language I English Pitch Software Character Table Pc 437 ESCIP2 Interface Auto Selection Page Length Tractor...
  • Page 94 Adjustment DLQ-3000 Service Manual 4.4.2 Bi-directional Adjustment This section describes the bidirectional adjustment procedure necessary when the DLQ-3000 printer is reassembled or when parts are reinstalled or replaced. This procedure is also needed if the BOARD ASSY.,C124 MAIN has been replaced.

  • Page 95: Sensor Assy.,Load Adjustment

    DLQ-3000 Service Manual Adjustment The printer lets you check your print pattern selection for confirmation of the following Step 11 : steps 9 and 10 by printing one row of the pattern you selected. : . . , , Step 12:...

  • Page 96: List Of Figures

    CHAPTER 5 Troubleshooting Table of Contents 5.1 OVERVIEW 5.2 UNIT LEVEL TROUBLESHOOTING 5-12 5.3 BOARD ASSY., C124 PSB/PSE REPAIR 5-15 5.4 BOARD ASSY., C124 MAIN REPAIR List of Figures Figure 5-1. Troubleshooting Procedure ......5-1 Figure 5-2.
  • Page 97 Troubleshooting DLQ-3000 Service Manual 5.1 OVERVIEW Troublesome phenomena of different types can be seen at different locations. Therefore, the troubleshooting strategy is not so simple. Considering this situation, this section provides a flow chart (see Figu;e 5-1) which can be used to implement troubleshooting.
  • Page 98 DLQ-3000 Service Manual Troubleshooting The DLQ-3000 employs a self test function and is equipped with a warning buzzer. The printer detects and classifies error states, and informs the user of a specific error type using one of several buzzer patterns. Table 5-2 lists the error types.

  • Page 99: Unit Level Troubleshooting

    Troubleshooting DLQ-3000 Service Manual 5.2 UNIT LEVEL TROUBLESHOOTING For troubleshooting, make repairs by unit replacement and adjustment based on the problem symptoms. Follow the corresponding flow chart after finding the problem in Table 5-3. Table 5-3. Problems (Requiring Unit Replacement)
  • Page 100 Troubleshooting DLQ-3000 Service Manual <The printer does not operate afier the power is turmxl on.> START Use normal voltage for input. ‘v Measure the output voltage on the BOARD ASS Y., POWER SUPPLY (see Table 5-4), Replace the BOARD ASSY., MAIN &...
  • Page 101 Troubleshooting DLQ-3000 Service Manual <The printer goes to an error state after the power is turntxi on.> START Determine the error type (refer to Table 5-2). ‘ Check that no foreign Turn the power off. material is caught in the...
  • Page 102 DLQ-3000 Service Manual Troubleshooting < Improper printing (during selftest) > S T A R T I Execute the self-test. I & ‘ Measure the coil Replace the the resistance resistance of the Printhead. normal? Printhead. Shaft Parallelism. Replace the BOARD ASSY.,MAIN &...
  • Page 103 Troubleshooting DLQ-3000 Service Manual c Abnormal paper feed. > off. Turn power Then rotate the Platen Knob manually to see if it rotate smoothly. Turn the power on. Feed paper by Panel Switches Is the Replace the Printer paper feed —...
  • Page 104 TrouMeshootina DLQ-3000 Service Manual < The control panel does not function correctly. > Turn the printer on with no paper loading. C h e c k t h e o u t p u t BOARD voltage of ASSY., PSBIPSE.
  • Page 105 DLQ-3000 Service Manual Troubleshooting < Improper operation during ON-LINE mode> Refer to other trouble -shooting items. Set into Auto select mode by Panel setting. Replace the interface cable. Replace the BOARD ASSY., MAIN & SUB. Replace the BOARD ASSY., I POWER SUPPLY.
  • Page 106 DLQ-3000 Service Manual Troubleshooting C124 Table 5-4. BOARD ASSY., PSB/PSE Output Voltage Pin No. Output Voltage Connector No. V (ch B) 1,2,3 GpB (O V) 4,5,6 GL (O V) +5 v 9,10 1,2,3 +35 V (ch A) CN 3 GpA (O V)
  • Page 107 Troubleshooting DLQ-3000 Service Manual Table 5-5. Motor Coil Resistance Test Method Motor Set Meter to ohms. Disconnect cofl~on ~:s~:;; Meter otor from BOARD ASSY. MAIN Cfim~e:::r Reading Number and check it with Printer @ower OFF.) Place one lead on pin 5 or 6, and the CN 4 Approx.
  • Page 108 Troubleshooting DLQ-3U(M Service Manual 5.3 BOARD ASSY., C124 PSB/PSE REPAIR Table 5-8 describes the repair procedure of the BOARD ASSY., C124 PSB/PSE. Table 5-8. BOARD ASSY., C124 PSB/PSE Repair Phenom- ~rou~,e Cause Item to Check Troubleshooting enon The line filter circuit Check that none of Cl to C4, Ll, Replace any bad...
  • Page 109 Troubleshooting DLQ-3000 Service Manual Table 5-8. BOARD ASSY., C124 PSB/PSE Repair (Continued) Trouble- Phenom- Trouble Cause Item to Check enon shooting Check that transistor Q154 is not turned ON (i.e. the collector has not Replace reached the GP level = max. voltage).
  • Page 110 DLC)-3000 Service Manual Troubleshooting — Figure 5-9. Power Supply Board Sample Waveform -1 Figure 5-10. Power Supply Board Sample Waveform -2 , 1 1 I 1 , 1 1 1 1 1 1 I 1 1 1 1 1 1 +! : / Figure 5-11.
  • Page 111 Troubleshooting DLQ-3000 Service Manual 5.4 BOARD ASSY., C124 MAIN REPAIR Table 5-9. describes the repair procedure for the BOARD ASSY., C124 MAIN board. Table 5-9. BOARD ASSY., C124 MAIN Repair p\:;:m- Troubleshooting Cause Item to Check Trouble Check that IC14 pin 1 goes LOW shortly The reset after the power is turned on.
  • Page 112 DLQ-WOO Service Manual Troubleshooting Table 5-9. BOARD ASSY., C124 MAIN Repair (Continued) /---- . , Phenom- Item to Check Trouble Cause Troubleshooting enon Replace the BOARD ASSY., Measure the reference voltage of the MAIN. “Release sensor (approx. 5V) at pin of ICI O.
  • Page 113 Troubleshooting DLQ-3000 Service Manual Table 5-9. BOARD ASSY.,C124 MAIN Repair (Continued) Phenom- Trouble Cause item to Check Troubleshooting enon control When the switches, LCD or LEDs are not panel does not switches, available, the G.A of the Panel circuit control LCD or board is bad.
  • Page 114 DLQ-3000 Service Manual Troubleshooting Figure 5-12. Main Board Sample Waveform -1 Figure 5-13. Main Board Sample Waveform -2 . ’ ,,=. Figure 5-14. Main Board Sample Waveform -3 ,.’ Rev.A 5-18...
  • Page 115 Troubleshooting DLQ-3000 Service Manual illl — :PF A) aiE_ Figure 5-15. Main Board Sample Waveform -4 5-19 Rev.A...
  • Page 116 CHAPTER 6 Maintenance Table of Contents 6.1 PREVENTIVE MAINTENANCE 6.2 LUBRICATION AND ADHESIVE List of Figures Figure 6-1. Lubrication and Adhesive Points (1) ......6-3 Figure 6-2.

  • Page 117: Preventive Maintenance

    LUBRICATION AND ADHESIVE EPSON recommends that the points illustrated in Figures 6-1 and 6-2 be lubricated, with EPSON 02 and G26, which have been extensively tested and found to comply with needs of this printer. (Refer to Table 6-1 for details of 08 and G26.) Table 6-2 indicates the lubricant for each points.
  • Page 118 DLQ-WOO Service Manual Maintenance Table 6-2. Lubrication Points Lubrication Points Ref No. Lubricant LEVER, RELEASE (contact point with the GEAR,l 5.5) G-26 LEVER, RELEASE, SUPPORT (contact point with the LEVER, G-26 RELEASE) Slits of the FRAME, ASSY.,LEH (contact portion with the G-26 LEVER.
  • Page 119 Maintenance DLQ-3000 Service Manual Figure 6-1. Lubrication and Adhesive Points (1) Rev. A...
  • Page 120 DLQ-3000 Service Manual Maintenance (“ ‘> Figure 6-2. Lubrication and Adhesive Points (2)
  • Page 121 APPENDIX Table of Contents A.1 CONNECTOR SUMMARY A.2 CIRCUIT DIAGRAMS A-14 A.3 CIRCUIT BOARD COMPONENT LAYOUT A-16 A.4 EXPLODED DIAGRAM A-21 A.5 CASE OUTLINE DRAWING List of Figures Figure A-1. Cable Connections........A-1 BOARD ASSY., C124 MAIN Circuit Diagram (1/2).
  • Page 122 Appendix DLQ-3000 Service Manual A.1 CONNECTOR SUMMARY This section describes the component comection and detailed pin assignments of each connector of the units. Figure A-1 shows the component connections of the DLQ-3000, and Table A-1 lists the connector assignments and reference tables.
  • Page 123 DLQ-3000 Service Appendix Manual Table A-1. Connector Assignment ConnWtor P i n Description Board I CN 1 I 20 I Printhead drive signal output CN 2 Printhead drive signal output CS motor, Color ribbon/film ribbon/ CS home sensor CN 3 CN 4 PF motor output CR motor,...
  • Page 124 Appendix DLQ-3000 Service Manual Table A-2. Connector Pin Assignment - CNI Description Name #15 print pulse NHD 15 #6, #12 common COM 6 2 #11 common COM 11 COM 10/18 #1 O, #18 common #23 print pulse NHD 23 COM 7/15...
  • Page 125 DLC?-3000 Service Manual Appendix Table A-4. Connector Pin Assignment - CN3 , . . ; , Name Description <, 5V DC PWL common PWLCOM CS home position signal CSHOME Ground PEW sensor signal PEWRIL PWR common PWRCOM RF power supply line (+35V/+5V) RFCOM Phase –B drive signal RF-B...
  • Page 126 Appendix DLQ-3000 Service Manual Table A-7. Connector Pin Assignment - CN6 Description Name +5V DC line Transmit data -READY Ready to receive data Receive data No connection -RAT Reset Inhibit Command request -CMREQ -WRRDY Write ready -RDREQ Read ready –WR...
  • Page 127 DLQ-3000 Service Manual Appendix Table A-10. Connector Pin Assignment - CNI 1 Description Name +35V DC +35V DC +35V DC Power ground Power ground I Power ground I - I Table A-1 1. Connector Pin Assignment -CN12 Description Name +35V DC...
  • Page 128 Appendix DLQ-3000 Service Manual Lblo –Zo Figure A-4. BOARD ASSY.,C124 MAIN SUB Circuit Diagram A - n Rev. A...
  • Page 129 DLQ-3000 Service Manual Appendix ‘.. — -.” ,> :- — t---i Fiqure A-5. BOARD ASSY.,C124 PSB Circuit Diagram Rev. A A-1 2...
  • Page 130 Appendix DLQ-3000 Service Manual L$Ll ..Figure A-6. BOARD ASSY.,C124 PSE Circuit Diagram A-13 Rev. A...
  • Page 131 DLQ-3000 Service Manual Appendix A.3 CIRCUIT BOARD COMPONENT LAYOUT L.J52 ,k:4 IC!S c’ ‘ . , . Figure A-7. BOARD ASSY.,C124 MAIN & SUB Component Layout Rev. A A-1 4...
  • Page 132 Appendix DLQ-3000 Service Manual ... . . ‘“’m 104/12SV L!E_.!u L—————J ‘ 1 .,3! I“L —-7,1CNJTION: — ..EpS-18E ASSY. “201 1542001 ‘:-MODEL Figure A-8. BOARD ASSY.,C124 PSB/PSE Component Layout A-15 Rev.
  • Page 133 Appendix DLQ-30U0 Service Manual A.4 EXPLODED DIAGRAM , . . , , (“’ c . - . . , : : . - . .,, Fgiure A-9. DLQ-3000 Exploded Diagram (1) Rev. A A-1 6...
  • Page 134 Appendix DLQ-3000 Service Manual Fgiure A-10. DLQ-3000 Exploded Diagram (2) A-17 Rev. A...
  • Page 135 DLQ-3000 Service Manual Appendix Fgiure A-11. DLQ-3000 Exploded Diagram (3) Rev. A /l-l...
  • Page 136 Appendix DLQ-3000 Service Manual Table A-15. Parts List Description Ref. No. \ Deeoription Ref. No. I BRACKET,B HOUSING ASSY.,LOWER COVE R, SHIELD, FRONT FRAME,MAIN COVER, SHIELD, REAR GROUNDING PLATE,l/F HOUSING ASSY.,UPPER INSULATION PLATE,l/F C.C.B. SCREW (M3x1O) SHIELD CASE,TYPE B FRAME ASSY.,BOTTOM...
  • Page 137 DLQ-3000 Service Manual Appendix Table A-15. Parts List (Continued) Ref. No. Ref. No. Description Description FRAME ASSY.,RIGHT HOLDER, HEAD, CABLE KNOB, G, ADJUST FRAME,BASE HOLDER, LOAD, ROLLER BUSHING,l 4.04 LEVER, PAPER GUIDE, CHANGE OIL PAD ,PLANE,UPPER OIL PAD, PLAN E. LOWER...
  • Page 138 Appendix DLQ-3000 Service Manual Table A-15. Parts List (Continued) Description Ref. No. Description Ref. No. LEVER ASSY.,EJ HARNESS,HP SENSOR ASSY.,LOAD;B PHOTO INTERRUPTER LEVER,CR DAMPER EXTENSION SPRING,154 DAMPER SPACER PLATEN SHAFf HOLDER KNOB, TRANSMISSION, ADJUST TRACTOR REDUCTION GEAR LEVER, TRANSMISSION, ADJUST...
  • Page 139 DLQ-3000 Service Manual Appendix A.5 CASE OUTLINE DRAWING - . , . , 5 0 9 1“ 6 7 0 — c . . : , 2 0 5 Figure A-12. DLQ-3000 Case Outline Drawing “-,..Rev. A...
  • Page 140 EPSON OVERSEAS MARKETING LOCATIONS EPSON AMERICA, INC. EPSON DEUTSCHLAND GmbH 20770 Madrona Avenue, Z~lpicher Stra13e 6,4000 Dusseldorf 11 2842 F.R. Germany P.O. Torrance, CA 90509-2642 Phone: 0211-56030 Phone: (800) 922-8911 Fax : 0211-504-7787 Fax: (310)782-5220 EPSON UK LTD. EPSON FRANCE S.A.
  • Page 141 EPSON c ~ , . , . , Printad in Japan 94.06-.45-G...

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