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III-2

3.

I/F PCB

The I/F PCB consists of two connectors (8-pin modular jack connectors) for connection of
the printer to other optional devices, a paper pressure motor, a cassette sensor, an open
cover sensor connector, and a connector for connection of the harness from the main
PCB.

This board only relays signals among the paper pressure motor, cassette sensor, open
cover sensor and printer and the main PCB.

4.

COMMUNICATION WITH THE PRINTER

A 3-line clock synchronous serial interface is used for communication between the
Duplex unit and the printer.

The following describe the timing of communication way.

GND

DATAOUT

DATAIN

CLKOUT

/ATNOUT

/OPRST

+24V

GND

+24V

/OP RESET

/ATTN

SICLK

SIDATA

DATAIN

DATAOUT

CLKIN

/ATNIN

/RESET

REG.

Printer

Duplex unit

GND

+5V

+24V

Figure 3.2

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Содержание DX-2000

Страница 1: ...MECHANICS ELECTRONICS SERVICE MANUAL LASER PRINTER DX 2000 ...

Страница 2: ...or Drive Circuit III 1 2 5 Solenoid Actuator III 1 2 6 Sensor Input III 1 3 I F PCB III 2 4 COMMUNICATION WITH THE PRINTER III 2 CHAPTER IV DISASSEMBLY IV 1 1 EXTERNAL COVERS IV 1 1 1 Composition IV 1 1 2 Side Cover R IV 1 1 3 Side Cover L IV 3 1 4 Bottom Cover IV 4 1 5 Top Cover IV 5 2 OUTSIDE FRAME UNIT IV 7 2 1 Composition IV 7 2 2 1 Removing the outside frame unit from the Duplex unit IV 7 2 2...

Страница 3: ... 15 3 2 Photo interrupter 1240 IV 15 3 3 Solenoid IV 16 3 4 Carriage Guide 2 Assy IV 16 3 5 Carriage Guide 1 IV 17 3 6 Duplex PCB Assy IV 17 3 7 DC Fan Motor IV 18 3 8 Reversible Motor Assy IV 19 4 DU TRAY CARRYING WAY UNIT IV 20 CHAPTER V TROUBLESHOOTING V 1 APPENDICES 1 CONNECTION DIAGRAM A 1 2 MOTOR DRIVE CIRCUIT A 2 3 MAIN PCB CIRCUIT A 3 ...

Страница 4: ... mm Executive 184 2 x 266 7 mm B5 182 0 x 257 0 mm 6 Dimensions 323 0 W x 105 0 D x 286 0 H mm 7 Weight 5 4 kg 8 Environmental conditions 1 Operating Temperature 10 C 32 5 C Humidity 20 RH 80 RH No dew condensation allowed 2 Idling Temperature 0 C 35 C Humidity 10 RH 80 RH No dew condensation allowed 3 Storage Store the unit under the following conditions to ensure reliable performance Normal 90 o...

Страница 5: ...d At standby 0 2 G 5 100 Hz Same as above When packed 1 5 G 10 100 Hz Same as above 6 Inclination The feeder must operate properly even at an inclination angle of 2 7 Mechanical noise During printing 55 dB A or below At standby 40 dB A or below 9 Interface 1 Connector signal table 8 pin modular jack Pin Signal name 1 24V 2 SIDATA 3 24V 4 SICLK 5 GND 6 ATTN 7 RESET 8 GND 2 Interface circuit 5V 5V 0...

Страница 6: ... output shaft The Duplex unit will draw paper from the printer by turning on the solenoid The supplied paper is further transferred by the reversible motor driven reversible gears When the reverse sensor detects the rear end of the paper the reversible motor comes to a momentary stop and begins running counterclockwise Then the reversible motor enables the carriage rollers to feed the paper into t...

Страница 7: ...ified time passed it is deemed that paper jam has occurred 3 The solenoid is turned off in response to instructions from the printer and the flapper is returned as it was before After the reverse sensor is turned on the time up to when the paper has passed through the reverse sensor is monitored If the sensor has not turned off within a specified time it is deemed that paper jam has occurred 4 Imm...

Страница 8: ... ppm 12 16 times the above values For 20 ppm 12 20 times the above values 4 PAPER PRESSURE MECHANISM Upon a request from the printer the paper pressure unit built in the Duplex tray is moved up or down by the paper pressure motor connected to the I F PCB The paper pressure unit is moved up only when the first tray is selected on the printer to supply paper or down when paper is fed from another tr...

Страница 9: ...Circuit This circuit drives the cooling DC fan The fan rotation speed is switched between two different levels according to the signal from the CPU It operates at high speed when the Duplex unit feeds paper or it runs at low speed while the unit is not in operation When the DC fan functions properly it sends a FLOCK signal to the CPU to confirm that it is normal 2 4 Motor Drive Circuit According t...

Страница 10: ...This board only relays signals among the paper pressure motor cassette sensor open cover sensor and printer and the main PCB 4 COMMUNICATION WITH THE PRINTER A 3 line clock synchronous serial interface is used for communication between the Duplex unit and the printer The following describe the timing of communication way GND DATAOUT DATAIN CLKOUT ATNOUT OPRST 24V GND 24V OP RESET ATTN SICLK SIDATA...

Страница 11: ...MAND transmission receipt sequence ATTN SICLK SIDATA 500 max 50 µs 350 max 200 µs 200 µs 6 4 min 350 max 400 min 4 µs COMMAND transmission receipt sequence Within a STATUS request Without a STATUS request 350 max D0 D1 D2 D3 D4 D5 D6 D7 500 min 70 µs 1000 max 350 min STATUS transmission receipt sequence 350 max 150 µs 12 8 µs D0 D1 D2 D3 D4 D5 D6 D7 ...

Страница 12: ...Composition Figure 4 1 1 2 Side Cover R 1 Push the lock lever cover turn and open the inside frame unit Figure 4 2 Side cover R Lock lever cover Side cover L Top cover Bottom cover Lock lever cover Lock lever cover Outside frame unit Inside frame unit ...

Страница 13: ...mall minus screwdriver disengage the six hooks to remove the side cover R from the outside frame R and the bottom cover 4 Separate the side cover R from the Duplex unit Figure 4 4 Side cover R Outside frame R Bottom cover Hooks Hooks Hooks Taptite bind B M3 x 6 Side cover R ...

Страница 14: ... 2 Using a small minus screwdriver disengage the five hooks to remove the side cover L from the outside frame L and the bottom cover 3 Separate the side cover L from the Duplex unit Figure 4 6 Side cover L Taptite bind B M3 x 6 Side cover L Outside frame L Bottom cover Hooks Hooks ...

Страница 15: ...x unit on the side to face up the bottom cover 3 Loosen the two screws Figure 4 7 4 Disengage the engaging locks of the bottom cover from the outside frame L and separate the cover from the Duplex unit Figure 4 8 Bottom cover Taptites cup S M3 x 6 Bottom cover Engaging locks PR99079 ...

Страница 16: ...r turn and open the inside frame slightly approx 30 Figure 4 9 3 Disengage the hook of the lock lever cover by using a minus screwdriver and pull out the cover slantingly Figure 4 10 Lock lever cover Hook Top cover Lock lever cover Outside frame unit Lock lever cover Approx 30 Inside frame unit ...

Страница 17: ...he five engaging locks from the inside frame unit and separate the top cover from the Duplex unit Figure 4 12 Taptites cup S M3 x 6 Taptites cup S M3 x 6 Top cover Top cover Push the bosses in these holes and remove the gear cover Gear cover Engaging locks Engaging locks Top cover Inside frame unit ...

Страница 18: ... harness assy from the Duplex I F PCB assy and the edge saddle 3 Pull out the fulcrum shaft R by using pliers 4 Remove the fulcrum spring Figure 4 14 Paper pressure motor Carriage guide 3 Outside frame L assy Outside frame R assy Tower bars Inside frame unit Fulcrum shaft L Bearing collar Fulcrum shaft R Fulcrum spring Retaining ring E6 Retaining ring E4 Outside frame unit ...

Страница 19: ...e R side of inside frame unit toward you to remove it from the fulcrum shaft L and the outside frame unit Figure 4 16 Outside frame unit Fulcrum shaft L Inside frame unit R side Edge saddle Relay harness assy Duplex I F PCB assy ...

Страница 20: ... outside frame unit Note2 If the solenoid assy harness is slack stretch it 2 Turn the inside frame unit on the fulcrum shaft L to set it in the outside frame unit Figure 4 17 3 Insert one end of the fulcrum spring in the hole in the outside frame unit Figure 4 18 Solenoid assy harness Solenoid Outside frame unit Relay harness assy Fulcrum shaft L Hole for the fulcrum shaft L Inside frame unit Insi...

Страница 21: ...ct the paper pressure motor harness the cover sensor harness assy and the cassette sensor assy from the Duplex I F PCB assy 2 Unfasten the screw 3 Remove the Duplex I F PCB from the outside frame L Figure 4 20 Inside frame unit Bearing collar Fulcrum spring Fulcrum shaft R Retaining ring E6 Outside frame unit Retaining ring E4 Duplex I F PCB Cassette sensor assy Cover sensor harness assy Paper pre...

Страница 22: ...s from the outside frame unit Figure 4 21 3 Unfasten the two screws 4 Remove the outside frame R assy from the carriage guide 3 Figure 4 22 Carriage guide 3 Taptites cup S M3 x 5 Outside frame R assy Taptite cup S M3 x 5 Outside frame unit Taptite cup S M3 x 5 Taptites cup S M3 x 5 Tower bars ...

Страница 23: ...g from the paper pressure frame assy and the gear release lever 2 Draw the paper pressure frame assy from the gear release lever in the direction of the arrow 3 Remove the paper pressing gear 2 Figure 4 24 Outside frame L assy Taptites cup S M3 x 5 Paper pressure frame assy Carriage guide 3 Taptites cup S M3 x 5 Paper pressure frame assy Gear release lever Gear release spring Paper pressing gear 2...

Страница 24: ...and the leaf switch from the outside frame L assy 3 Unfasten the two screws B 4 Remove the paper pressure motor from the outside frame L assy Figure 4 26 Paper pressing gear 1 Retaining rings E3 Paper pressing gear shafts Gear release lever Paper pressing gear 2 Screw B Taptite bind S M3 x 5 Screw A Taptite cup S M3 x 5 Cassette sensor lever Screw B Taptite bind S M3 x 5 Leaf switch Outside frame ...

Страница 25: ... belt B40S2M396 Figure 4 27 2 8 Photo Interrupter 1240 1 Flexing the hook inward turn the photo interrupter 1240 in the direction of the arrow and remove it Figure 4 28 Belt tension spring T Belt B40S2M396 Taptite cup S M3 x 5 Outside frame L assy Outside frame L assy Hooks Photo interrupter 1240 ...

Страница 26: ...upter 1240 1 Disconnect the reverse sensor harness assy from the photo interrupter 1240 2 Flex the hooks of the photo interrupter 1240 to the inside to remove it Figure 4 30 Inside frame unit Taptites cup S M3 x 6 Reversible frame Switching guide Screws pan S P washer M3 x 8 Hooks Photo interrupter 1240 Reverse sensor harness assy ...

Страница 27: ...rriage Guide 2 Assy 1 Unfasten the screw A and the screw B 2 Slide the carriage guide 2 assy slightly in the direction of the arrow and disengage the hooks 3 Remove the carriage guide 2 assy Note1 When removing the carriage guide 2 assy take care not to damage the solenoid assy harness Figure 4 32 Inside frame unit Solenoid spring Screws cup M3 x 5 Solenoid assy harness Solenoid Solenoid link assy...

Страница 28: ...connectors of the solenoid DC fan motor reversible motor assy and reverse sensor harness assy from the Duplex PCB assy 2 Detach the two retaining rings E3 3 Remove the two PF bearings 05 4 Remove the carriage roller assy Figure 4 34 Engaging lock Inside frame unit Carriage guide 1 Engaging lock DC fan motor Duplex PCB assy PF bearing 05 Retaining ring E3 Carriage roller assy Solenoid Reverse senso...

Страница 29: ...e hook of the reversible gear 15 30 and detach the gear 2 Detach the retaining ring E3 3 Remove the PF bearing 05 4 Remove the reversible gear assy Figure 4 36 DC fan motor PF bearing 05 Retaining ring E3 Reversible gear assy Reversible gear 15 30 Hook Reversible gear 15 30 Taptites cup S M3 x 5 Duplex PCB assy Taptites cup S M3 x 5 ...

Страница 30: ...otor should be so mounted that the label will not be exposed Figure 4 37 3 8 Reversible Motor Assy 1 Unfasten the two screws 2 Remove the reversible motor assy Figure 4 38 Screw pan washer M3 x 29 5 DC fan motor Screws pan washer M3 x 29 5 Screws cup M4 x 6 Reversible motor assy ...

Страница 31: ...ING WAY UNIT 1 Unfasten the screw on the back of unit Figure 4 39 2 Turn the unit to the face and remove the pressure roller Figure 4 40 Roller DU tray carrying way Taptite bind B M3 x 6 Pressure roller DU tray carrying way ...

Страница 32: ...n the three screws Figure 4 41 4 Remove the four hooks on the back of unit and carriage guide 4 Figure 4 42 Figure 4 43 DU tray carrying way Hook Hook Hook Hook Carriage guide 4 Carriage guide 4 Taptite bind B M3 x 6 ...

Страница 33: ...ssembling the rear ground spring put it in the locating boss Figure 4 44 5 Remove the tray pulley gear shaft from the clamp Figure 4 45 T Belt B40S2M396 Tray pulley gear Clamp DU tray carrying way Paper pressure plate Locating boss Front ground spring Rear ground spring ...

Страница 34: ...er pressure fulcrum shaft from the two clamps Figure 4 46 7 Remove the roller assy from the clamp Figure 4 47 Paper pressure 1 Clamps DU tray carrying way Paper pressure fulcrum shaft Paper pressure 2 assy Roller assy Clamp ...

Страница 35: ...IV 24 8 Remove the discharge brush Figure 4 48 Front ground spring Clamps Discharge brush ...

Страница 36: ... Replace the main PCB Replace the modular cable Paper pressure motor Does the paper pressure motor run when the paper cassette is set No Replace the paper pressure motor Yes Replace the cassette sensor lever and leaf switch Refer to Figure 4 26 IV 9 Misoperation DX OPEN error message appears Is the hook of the Duplex unit s reversing mechanism engaged completely with the outside frame No Close the...

Страница 37: ...Reverse sensor Does the voltage vary from 5V to 0V at pin 3 of main PCB s connector P5 while the switching guide is moving No Replace the reverse sensor or reverse sensor harness Yes Replace the main PCB Supply paper in Simplex mode Is paper correctly supplied No Repair the HL 1260 unit Pickup mistake with the first sheet of paper HL 1660 2060 unit Pickup roller HL 1660 2060 Duplex tray DU detecti...

Страница 38: ...A 1 Appendix 1 Connection Diagram ...

Страница 39: ...A 2 Appendix 2 Motor Drive Circuit ...

Страница 40: ...A 3 Appendix 3 Main PCB Circuitry Diagram CODE NAME UK3283000 B48K264CIR ...

Страница 41: ...July 98 54T047NE0 DX 2000 ...

Страница 42: ...PARTS REFERENCE LIST MODEL DX 2000 R DUPLEX UNIT ...

Страница 43: ...RK Revision No marked on the printed circuit board B48K056 201A 2 Design changed parts If the parts are changed any one of the following symbols is indicated in the REMARKS column A compatible between old and new B replaceable from old to new D incompatible newly established 3 The original of this list was made based on the information available in November 1997 4 Parts are subject to change in de...

Страница 44: ...CONTENTS 1 INSIDE FRAME UNIT 1 2 OUTSIDE FRAME UNIT 1 3 MAIN PCB 3 4 COVERS 3 5 TRAY CARRYING UNIT 5 6 PAPER TRAY 5 7 DOCUMENTS ATTACHMENTS 7 8 PACKING MATERIALS 7 ...

Страница 45: ... 1 1 3 5 4 6 2 2 8 7 1 6 7 4 5 2 8 3 1 INSIDE FRAME UNIT 2 OUTSIDE FRAME UNIT MODEL DX 2000 54T X10 510 MODEL DX 2000 54T X10 550 ...

Страница 46: ... 1 PHOTO INTERRUPTER 1240 8 UH1732001 1 REVERSE SENSOR HARNESS ASSY MODEL DX 2000 54T X10 510 2 OUTSIDE FRAME UNIT REF NO CODE Q TY DESCRIPTION REMARK 1 UH1655001 1 T BELT B40S2M396 2 Z25996001 1 MOTOR BP484223LM31 FD 3 085320515 2 TAPTITE BIND S M3X5 4 UH1734001 1 CASSETTE SENSOR ASSY 5 UH1751000 1 CASSETTE SENSOR LEVER 6 UJ4232000 1 PHOTO INTERRUPTER 1240 7 UH1733001 1 COVER SENSOR HARNESS ASSY ...

Страница 47: ... 3 MODEL DX 2000 54T X10 100 3 MAIN PCB MODEL DX 2000 54T X10 400 4 COVERS 2 1 2 3 4 5 1 2 10 9 2 7 9 4 3 6 8 T I No PR99027 ...

Страница 48: ...1 TAPTITE CUP S M3X5 MODEL DX 2000 54T X10 100 4 COVERS REF NO CODE Q TY DESCRIPTION REMARK 1 UH1667001 1 TOP COVER 2 087320616 4 TAPTITE CUP S M3X6 3 UH1668001 1 BOTTOM COVER 4 087320616 2 TAPTITE CUP S M3X6 5 UH1669001 1 SIDE COVER L 6 085310616 1 TAPTITE BIND B M3X6 7 UH1670001 1 SIDE COVER R 8 085310616 1 TAPTITE BIND B M3X6 9 UH1671001 2 LOCK LEVER COVER 10 UH1770001 1 GEAR COVER MODEL DX 200...

Страница 49: ... 5 MODEL DX 2000 54T X10 610 5 TRAY CARRYING UNIT MODEL DX 2000 54T X10 650 6 PAPER TRAY 5 1 2 3 4 6 7 1 1 7 ...

Страница 50: ...REF NO CODE Q TY DESCRIPTION REMARK 1 7 UH3162001 1 PAPER TRAY S UNIT DX3 SP 1 UH2487001 1 SEPARATION PAD ASSY T 2 UH2841001 1 SEPARATION PAD SPRING 200 3 UH2360000 1 ROLLER 4 UH2459000 1 ROLLER HOLDER 5 UH1776001 1 PAPER FRONT GUIDE DU BLUE6155 6 UH2472001 1 TRAY GUIDE PLATE 1 7 UH2804001 1 ADJUST KNOB STOPPER MODEL DX 2000 54T X10 650 6 ...

Страница 51: ... 7 MODEL DX 2000 54T X10 910 7 DOCUMENTS ATTACHMENTS MODEL DX 2000 54T X10 930 8 PACKING MATERIALS 1 2 1 R 2 3 2 4 3 4 ...

Страница 52: ...H2440001 1 PAPER FEED ROLLER ASSY DU2 4 UH2439001 1 INSERTION SHEET MODEL DX 2000 54T X10 910 8 PACKING MATERIALS REF NO CODE Q TY DESCRIPTION REMARK 1 UE0694001 1 CARTON DX 2000 1 UE0695001 1 CARTON DX 2000 BROTHER 2 UE0457000 1 STYROFOAM PAD ASSY 3 UE0454000 1 CARTON TRAY 4 UE1109001 1 PE BAG 215X290H MODEL DX 2000 54T X10 930 8 ...

Страница 53: ...July 98 54T048NE0 DX 2000 ...

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