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Sharp DM-2000 Service Manual

Network laser system
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[ 1 ] GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
[ 2 ] SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . 2 - 1
[ 3 ] CONSUMABLE PARTS
[ 4 ] EXTERNAL VIEWS AND INTERNAL STRUCTURES . . . 4 - 1
[ 5 ] UNPACKING AND INSTALLATION . . . . . . . . . . . . . 5 - 1
[ 6 ] ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . 6 - 1
[ 7 ] SIMULATIONS . . . . . . . . . . . . . . . . . . . . . . . . 7 - 1
[ 8 ] FLASH ROM VERSION UP PROCEDURE . . . . . . . . . 8 - 1
[ 9 ] TROUBLE CODE LIST . . . . . . . . . . . . . . . . . . . . 9 - 1
[10] USER SETUP . . . . . . . . . . . . . . . . . . . . . . . .
[11] DISASSEMBLY AND ASSEMBLY . . . . . . . . . . . . .
[12] ELECTRICAL SECTION . . . . . . . . . . . . . . . . . .
Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these parts with specified
ones for maintaining the safety and performance of the set.
CONTENTS
. . . . . . . . . . . . . . . . . . . 3 - 1
SHARP CORPORATION
CODE: 00ZDM2000/A1E
NETWORK LASER
SYSTEM
DM-2000
MODEL
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
DM-2000
10 - 1
11 - 1
12 - 1

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Summary of Contents for Sharp DM-2000

  • Page 1 DM-2000 CODE: 00ZDM2000/A1E NETWORK LASER SYSTEM DM-2000 MODEL CONTENTS [ 1 ] GENERAL ......1 - 1 [ 2 ] SPECIFICATIONS .
  • Page 2 DM-2000 Warning! This product is a class A product. If it is operated in households, offices or similar surroundings, it can produce radio interferences at other appliances, so that the user has to take adequate countermeasures. CLASS 1 LASER PRODUCT VAROITUS! LAITTEEN KÄYTTÄMINEN...
  • Page 3 DM-2000 CONTENTS [1] GENERAL ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ 1 – 1 [10] USER SETUP ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅10 – 1 1.

  • Page 4: General

    Fax function are options.) To protect the machine and the power unit from lightening, 10) There are some sharp edges inside the machine. Be careful not grounding must be made. to injure your fingers when servicing.

  • Page 5: Specifications

    DM-2000 E. Paper feed [2] SPECIFICATIONS Max.: A3, 11" × 17" 1. Copy mode Min.: A6, 5.5" × 8.5" (For B6/A6 and 5.5" × 8.5", Copy size Multi bypass tray only.) A. Type Paper feed Type Desk-top 2 cassette + Multi bypass tray system 250 ×...
  • Page 6 DM-2000 (1) Electronic sort board (Option) F. Job speed 60 sheets of A4 (8.5" × 11") S-S (1st step) 80% (document replacement rate) Sorting standard documents Condition: With SPF Electronic sort 60 sheets of A4 (8.5" × 11") Grouping standard documents G.

  • Page 7: Specifications Of Printer Section ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅

    DM-2000 P. Other specifications 2. Specifications of printer section Photoconductor type OPC (Organic Photo Conductor) A. Basic specifications Photoconductor drum dia. 30 mm Item Contents Copy lamp Xenon lamp Print speed 20 PPM Dry 2-component magnetic brush 600 dpi, 300 dpi (1,200 dpi equivalent by...
  • Page 8 Name on PC screen content of COPY water mark PCL5e for Windows 3.1/95/98 Edit Fonts Refer to the following Font List. SHARP DM-2000 0 ∼ 255 Series PCL5e Edit Density PCL5e for Windows NT4.0 Transparent PCL6 for Windows 95/98 SHARP DM-2000...
  • Page 9 DM-2000 b. LED display Status LCD display Content Indicates that the printer is off- Toner empty line and data cannot be Check Drum replacement transferred or printed. Make Panel Cover open Error settings from the operation Service call error Extinguished panel in this mode.
  • Page 10 DM-2000 b. In the case of Macintosh Side set to the Side set to the = Long side = Short side paper feed port paper feed port Computer Macintosh computer Type Transport direction Transport direction Operating Macintosh System 7.5 to 8.5...
  • Page 11 DM-2000 (9) Print Area PAPER SIZE 9920 7014 9684 9720 Physical Page 8597 6070 8361 8397 Printable 7014 4960 6778 6814 Area Logical 6070 4298 5830 5870 Page 4960 3508 4720 4760 HP/GL Picture Frame Ledger 8400 5100 8160 8200...
  • Page 12 DM-2000 (11) Font a. For PCL b. For PS2 TrueDoc Format 45 fonts Font Name 1 bitmap font Dutch 801 SWA Font No. Font Name Dutch 801 Bold SWA Fixed Pitch 810 Courier Roman SWC Dutch 801 Italic SWA Dutch...

  • Page 13: Consumable Parts

    DM-2000 [3] CONSUMABLE PARTS 1. Supply system table A. USA Name Content Life Product name Package Remark Life setting by A4 (8.5" × Developer cartridge Toner/developer cartridge DM-200TD × 1 (Black) (Toner: 610 g, Developer: 395 g) 11") 6% documents Postcard label ×...

  • Page 14: Production Number Identification ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅

    DM-2000 3. Production number identification <Developing cartridge> The label on the drum cartridge shows the date of production. Destination Serial number Production (∗) (00001-99999) month January Indicates production in China. The end digit of production year September ∗: Destination October...

  • Page 15: External Views And Internal Structures

    DM-2000 [4] EXTERNAL VIEWS AND INTERNAL STRUCTURES 1. Appearance Platen cover Original table Handles Power switch Job separator tray Operation panel Paper output tray Front cover Paper trays Side cover Side cover handle Bypass tray guides Bypass tray Bypass tray extension Charger cleaner 2.

  • Page 16: Operation Section ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅

    DM-2000 3. Operation Section 9 10 11 12 13 16 17 21 22 23 24 25 19 20 29 30 31 Not used for the copier features. Operation panel and keys for printer INTERRUPT key and indicator Copy quantity display...

  • Page 17: Motor, Solenoid, Clutch ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅

    DM-2000 4. Motor, solenoid, clutch Name Code Function, operation Exhaust fan motor Cools the inside of the machine. Shifter motor SHTM Shifts the paper exit tray. Toner motor Toner supply Mirror motor Drives the optical mirror base (scanner unit). Cooling fan motor Cools the inside of the machine.

  • Page 18: Sensor, Switch ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅

    DM-2000 5. Sensor, switch Name Code Function, operation Mirror home position sensor MHPS Detects the mirror (scanner unit) home position. Document size sensor DSIN Paper size detection Toner density sensor Toner quantity detection Paper exit sensor (paper exit side) POD1 Detects paper exit.

  • Page 19: Pwb Unit

    DM-2000 6. PWB unit Name Function, operation Copy lamp Inverter PWB Copy lamp control Power PWB AC power input/DC power control High voltage PWB High voltage control Printer control PWB Printer control Network Board Network system interface CCD sensor PWB...

  • Page 20: Cross Sectional View ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅

    DM-2000 7. Cross sectional view Name Function/Operation Copy lamp Image radiation lamp Copy lamp unit Operates in synchronization with No. 2/3 mirror unit to radiate documents sequentially. LSU unit Converts image signals into laser beams to write on the drum.

  • Page 21: Unpacking And Installation

    DM-2000 3. Installation of developing cartridge [5] UNPACKING AND INSTALLATION 1) Remove the new TD cartridge from the bag. Hold the cartridge on 1. Installing conditions both sides and shake it horizontally four or five times. 1) Copier installation Do not install your copier in areas that are:...

  • Page 22: Removal And Storage Of Fixing Screw ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅

    DM-2000 5) Gently insert the TD cartridge along the guides until it locks in 3) Store the fixing pin and the fixing screw in the tray. G Store the fixing screw which was removed in the above proce- place. Note: If dirt or dust is adhered to the TD cartridge, remove it dure 2 and the fixing screw which was removed in procedure 2 before installing the cartridge.

  • Page 23: Installing The Printer Driver ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅

    2. Double-click “Makedisk.exe”. 3. Follow the on-screen instructions. Before installation, make sure that: G You read the README.TXT file which is contained on the SHARP Software CD-ROM. This file contains the information and restrictions for using the printer. 10) Use the TRAY SELECT key to select the paper tray of which the G The printer is connected properly with the computer or network.
  • Page 24 2) Search for the printer driver by clicking [Other Locations...] button. G The “Add New Hardware Wizard” window appears automat- 3) Insert the SHARP Software CD-ROM into the CD-ROM drive, type ically, click the [Next] button. R:\English\WinXX and click the [OK] button.
  • Page 25 5) If the screen for choosing the connection method appears, choose the connection method and click the [Next] button. 4) Insert the SHARP Software CD-ROM into the CD-ROM drive, type Note: This screen appears only when the computer is connected R:\English\WinXX, and click the [OK] button.
  • Page 26 Note: If you check “No” and click the [Finish] button, the printer does not print a test page after the installation. 7) Insert the SHARP Software CD-ROM into the CD-ROM drive, type G The printer driver installation begins. R:\English\WinNT and click the [OK] button.

  • Page 27: Expansion Memory Installation ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅

    DM-2000 7. Expansion memory installation Memory expansion realizes the following effects. G Increased processing speed of outline fonts or complex graphic data. G Shorter release time from a printing job of the computer. G Allows high resolution printing. G Complex data can be printed without data loss error or memory full error.

  • Page 28: Adjustments

    DM-2000 [6] ADJUSTMENTS 1. Adjustment item list Section Adjustment item Adjustment procedure/SIM No. Developing bias voltage output adjustment Process section Grid bias voltage adjustment Image lead edge position adjustment SIM 50-1/SIM 50-10 No. 2/3 mirror base unit installing position Main scanning direction (FR direction)
  • Page 29 DM-2000 8) Measure the image loss R of the copied image. Enter the set B. Mechanism section value of the image scanning lead edge position (Exposure display (1) Image lead edge position adjustment (SIM 50-1/SIM 50-10) <AUTO> ON) again. a. OC image lead edge position adjustment G 1 step of the set value corresponds to about 0.127 mm shift.
  • Page 30 ∗2 edge void ∗1: DM-2000 cannot be used. ∗2: Set to S → D mode before execution d. Paper off center adjustment 1) Execute SIM 50-1 and set the density mode of AUTO + MANUAL (Left edge void) to 1.
  • Page 31 ±2.5 mm surface side. off-center ∗1: DM-2000 cannot be used. ∗ When SIM 48-01 (AE) is executed, the document off-center is auto- matically set. Therefore, the off-center adjustment previously described in 5) must be adjusted again. e. Left edge void area adjustment Note: Before performing this adjustment, be sure to check that the paper off center adjustment (SIM 50-10) is completed.
  • Page 32 DM-2000 4) Loosen the set screw of the scanner drive pulley which is not in (3) Main scanning direction (FR direction) distortion adjustment contact with No. 2/3 mirror base unit positioning plate. This adjustment must be performed in the following cases: G When the mirror base drive wire is replaced.
  • Page 33 DM-2000 <Adjustment specification> 4) Move the mirror base B rail position up and down (in the arrow La = Lb direction) to adjust. 6) Execute the main scanning direction (FR) distartion balance ad- justment previously described in 2) again. (4) Sub scanning direction...
  • Page 34 DM-2000 5) Auto correction mode (AE lamp ON) b. SPF mode in copying Note: G Before performing this adjustment, be sure to check that the The mirror unit moves to the shading position, and the reference width of the reference white plate is scanned, and the correction CCD unit is properly installed.
  • Page 35 DM-2000 <Adjustment specification> Open/close sensor mounting plate Mode Specification Set value Set range Single: Add 1: Center ± 0.1 mm shift Original off 2.0 mm to R side 1 ∼ 99 center mode 50-13 Reduce 1: Duplex: (OC mode) Center ±2.5 0.1 mm shift...

  • Page 36: Simulations

    DM-2000 [7] SIMULATIONS Main ∗ Contents code code 1. Entering the simulation mode Trouble memory display Duplex print counter display Perform the following procedure to enter the simulation mode. Copy counter display Clear key → Interruption key → “0” key → Interruption key → Main code →...

  • Page 37: Contents Of Simulations ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅

    DM-2000 4. Contents of simulations Main Initial Contents Details of operation Set range code code value 50 ∼ 200% Mirror unit operation check Used to execute scanning at the speed corresponding to the set 100% magnification ratio. Key operation Display...
  • Page 38 DM-2000 Main Initial Contents Details of operation Set range code code value Used to drive the shifter motor at the speed of printing of A4 (8-1/2 × Shifter operation check 11"). Pressing the clear all key or interrupt key moves the shifter to the home position.
  • Page 39 DM-2000 Main Initial Contents Details of operation Set range code code value 1 ∼ 99 Intermittent aging After completion of warmup, counting is stopped and the ready lamp is lighted. When the copy quantity is entered and the start key is pressed, copying is made to make the set quantity of copies.
  • Page 40 DM-2000 Main Initial Contents Details of operation Set range code code value Used to display the current maintenance counter value. ∗1 Maintenance counter display Maintenance preset value Used to display the current maintenance preset value (set with SIM 21- 1). ∗1...
  • Page 41 DM-2000 Main Initial Contents Details of operation Set range code code value Used to clear the JAM memory and the JAM counter. ∗2 JAM memory, JAM counter clear Used to clear the trouble memory. ∗2 Trouble memory clear Used to clear the SPF counter. ∗2 SPF counter clear <SPF is required>...
  • Page 42 2: AL-1620 13: AL-1621 3: AL-1640/AL-1641 14: AL-1650 4: AR-160/AR-S160 15: AL-1670 5: AR-161/AR-S161 16: AR-F200 6: AR-200S 17: DM-2000 7: AR-200/AR-S200 18: DM-2005 8: AR-205/AR-S205 19: DM-2010 9: AR-F160 10: AR-F205 0 ∼ 7 Language setting Used to display the current setting of the language information with the number at right.
  • Page 43 DM-2000 Main Initial Contents Details of operation Set range code code value Fan rotation duty change The currently set fan motor rotation duty is displayed with the following state setup numbers. After entering the set value, press the start key to store the set value.
  • Page 44 DM-2000 Main Initial Contents Details of operation Set range code code value Document sensor light Used to display the light reception level and the detection level of the reception level display document sensor. (The sensor level adjusted with SIM 41-2 is displayed.)
  • Page 45 DM-2000 Main Initial Contents Details of operation Set range code code value 1 ∼ 99 SPF mode sub scanning After completion of warmup, shading is performed and the currently set direction magnification SPF mode sub scanning direction magnification ratio adjustment in ratio adjustment in copying is performed.

  • Page 46: Flash Rom Version Up Procedure

    DM-2000 Main Initial Contents Details of operation Set range code code value 1 ∼ 99 OC mode document off After completion of warmup, shading is performed and the currently set center adjustment off center adjustment value for the document in OC reading is displayed.
  • Page 47 DM-2000 7) Communication port/communication speed setting [8] FLASH ROM VERSION UP G Select “Comport” in the option menu, and select the most PROCEDURE suitable item with consideration of PC environment, work time, etc. 1. MCU/E-SORT A. Tool G Machine G PC Operates on Windows 95/98.
  • Page 48 DM-2000 9) Select the data for MCU to be transferred. 2. PRINTER CONTROL PWB FIRMWARE VERSION UP A. Cases where flash memory rewriting is required In the following cases, the program in the printer control PWB flash memory must be rewritten.

  • Page 49: Trouble Code List

    DM-2000 [9] TROUBLE CODE LIST 1. Trouble code list Trouble Trouble Trouble content Remark Trouble content Remark code code E-Sort board communication trouble Main motor lock E-Sort board trouble Job separator motor abnormality E-Sort ASIC error Polygon motor lock E-Sort CODEC error...

  • Page 50: Details Of Trouble Codes ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅

    DM-2000 2. Details of trouble codes Main Check and Replace the E-Sort PWB. Detail of trouble code code remedy Rewrite the flash ROM data. Check grounding of the machine. ∗∗ Content Communication trouble Content E-Sort PWB Work RAM error between MCU and E-Sort.
  • Page 51 DM-2000 Check and Check the connectors and harness Content E-Sort PWB communication remedy of the E-Sort PWB and the MCU trouble (Time-out) PWB. Detail Communication trouble between Check grounding of the machine. MCU and E-Sort PWB (Time-out Check the ROM of the E-Sort error) PWB.
  • Page 52 DM-2000 Cause Flat cable installation failure Check and When the lamp does not light: CCD unit abnormality remedy Check for heater lamp MCU PWB abnormality disconnection or thermostat disconnection. Check and Check flat cable installation to the Check the interlock switch.
  • Page 53 DM-2000 Content Polygon motor lock Check and Check that the EEPROM is remedy properly set. Detail The lock signal (the specified To prevent against loss of rotation speed signal) is not counter/adjustment values, record supplied within the specified time the values with simulation.
  • Page 54 DM-2000 Cause Operation control PWB connector Check and Check connector/harness between disconnection remedy FAX control PWB and MCU PWB. Operation control PWB MCU PWB Check grounding of the machine. harness failure Check FAX control PWB ROM. Check and Check the connectors and harness...
  • Page 55 DM-2000 Cause Bad connection of FAX control Content Printer PWB communication PWB connector trouble (Protocol) Defective harness between FAX Detail Communication trouble between control PWB and MCU PWB MCU and printer PWB (Protocol Motherboard connector pin error) breakage Cause Bad connection of printer PWB...

  • Page 56: User Setup

    DM-2000 2. Setting the user programs [10] USER SETUP 1) Press and hold the light ( ) key for more than 5 seconds until The user programs allow the parameters of certain functions to be set, all the alarm indicators ( , and ) blink and "-...
  • Page 57 DM-2000 For example, to change the setting of the auto power shut-off timer to 6) To continue with other user programs, press clear the key and 60 min., press key 2. then repeat steps 2 to 5. To exit the user program mode, press the light ( ) key.
  • Page 58 DM-2000 4) Press the START key. G The specified account will be deleted. 5) To continue with other user programs, enter another program number. To exit the user program mode, press the light ( ) key. E. Program No. 14: Number of copies per account G If no account number has been registered, "14E"...

  • Page 59: Configuration Setting ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅

    DM-2000 3. Configuration setting Menu Menu Online Main Menu Network Menu PS2 Menu Set IP Address Copies Print PS2 Error No * Off * Resolution Set Subnet Mask 600 * No * Smoothing Set Default Gateway Menu On * No *...
  • Page 60 DM-2000 5) After choosing the required value, press the ENTER key. Possible Item Description G The new value is registered. Settings A4∗ DATA Sets the size of the paper where data will be printed. If this size is different MENU...

  • Page 61: Configuration Report And Test Page ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅

    DM-2000 4. Configuration report and test page To test print the configuration page and font list, use the following procedure: 1) Press the ON LINE key to switch the printer to the offline mode. 3) Press the ITEM key to display the required item.
  • Page 62 DM-2000 Available Paper Size B. Items and contents (1) Hardware status Appearance on Configuration Page Description Letter (8 1/2 × 11) Letter/Long Edge Feed (Machine information) Letter (8 1/2 × 11R) Letter/Short Edge Feed a. Language Value: (English/French/German/Italian/Dutch/Spanish/Swedish) Legal (8 1/2 × 14)

  • Page 63: Disassembly And Assembly

    DM-2000 B. Charger wire [11] DISASSEMBLY AND ASSEMBLY Installation: The spring tip must be between two reference ribs. WARNING: Before performing the disassembly procedure, be sure to G The charger wire must be free from twist or bending. remove the power cord to prevent against an electric G Be sure to put the charger wire in the V groove.

  • Page 64: Fusing Section ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅

    DM-2000 B. Copy lamp unit D. Lens unit Disassembly: Be sure to put No. 2/3 mirror unit to the positioning plate (A). Assembly: Put the notched surface of wire holder (3) downward, tighten temporarily, and install. Adjustment: Main scanning direction distortion balance adjustment...
  • Page 65 DM-2000 A. Fusing unit D. Heater lamp Assembly: Insert the spring (A) into the hole (B) in the fusing frame. ( 1 ) ( 1 ) (1) (2) ( 3 ) ( 2 ) Assembly: Put the paper guide earth spring (A) under the paper guide (B) before fusing.
  • Page 66 DM-2000 F. Upper heat roller separation pawl ( 6 ) ( 9 ) ( 5 ) ( 1 0 ) ( 7 ) ( 8 ) ( A ) ( 8 ) ( B ) ( C ) G. Lower heat roller Assembly: Put the fusing harness (A) on the heater lamp (B) as shown in the figure and fix them together.

  • Page 67: Paper Exit Section ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅

    DM-2000 H. Lower heat roller separation pawl B. Paper exit unit removal ( B ) ( A ) ( 5 ) ( 4 ) ( 2 ) ∗ The simplex model has only two lower heat roller pawls. ( 4 ) 4.

  • Page 68: Mcu/Mother Board/Printer Control Pwb ⋅ ⋅ ⋅ ⋅ ⋅ ⋅

    DM-2000 Assembly: Insert the spring pin so that the waveform (A) of the spring pin faces in the longitudinal direction of the paper exit drive ( 7 ) gear long hole (B). Be sure to insert two ribs (C) into the groove (D).

  • Page 69: Optical Frame Unit ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅

    DM-2000 C. Printer control PWB Note: G When replacing the printer control PWB, check that the firmware is of the latest version. If the firmware is not of the latest version, perform the version up procedures described later. 6. Optical frame unit...

  • Page 70: Section ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅

    DM-2000 7. LSU 8. Tray paper feed section/Paper transport section Content LSU unit Content Interface frame unit A. LSU unit Drive unit Solenoid (paper feed solenoid, resist roller solenoid) Resist roller clutch, Resist roller Paper feed clutch/Paper feed roller (Semi-circular roller) A.
  • Page 71 DM-2000 B. Drive unit D. Resist roller clutch/Resist roller Assembly: Move down the clutch pawl as shown below, and avoid the clutch and install. ( 1 ) ( 2 ) ( 3 ) ( 3 ) ( 4 ) ( 3 ) E.

  • Page 72: Second Tray Section ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅

    DM-2000 Paper feed solenoid, transport solenoid 9. Second Tray section Content Second Tray Rear Cover Paper feed unit section Paper feed solenoid, transport solenoid Transport roller gear section Transport roller Paper feed roller clutch Paper feed roller A. Second Tray Rear Cover D.

  • Page 73: Manual Multi Paper Feed Section ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅

    DM-2000 E. Transport roller G. Paper feed roller NOTE: Engage connection arm spring B with frame groove A and con- nection arm groove C. 10. Manual multi paper feed section F. Paper feed roller clutch Content NOTE: When asembling the paper feed roller cluch, fit and insert sec- tion A (D cut) into the shaft as shown in the figure.
  • Page 74 DM-2000 Disassembly: Set up the cam transmission arm (2), and remove it. B. Manual transport clutch Assembly: Install so that the cam transmission arm (2) is under the roller arm (A). ( 4 ) ( 3 ) ( 5 )

  • Page 75: Power Section ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅

    DM-2000 D. Manual transport roller/Manual paper feed roller 11. Power section Installation: Be careful of the installing direction of the manual Content transport roller (4). Power unit A. Power unit ( 3 ) ( 3 ) ( 3 ) ( 1 )

  • Page 76: Electrical Section

    DM-2000 [12] ELECTRICAL SECTION 1. Block diagram 12 – 1...

  • Page 77: Actual Wiring Diagram ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅

    DM-2000 2. Actual wiring diagram Actual wiring diagram 1/3 12 – 2...
  • Page 78 DM-2000 Actual wiring diagram 2/3 12 – 3...
  • Page 79 DM-2000 Actual wiring diagram 3/3 12 – 4...
  • Page 80 DM-2000 COPYRIGHT © 1999 BY SHARP CORPORATION All rights reserved. Printed in Japan. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher.

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