DX-2000_Parts_and_Service_Manual.pdf

LASER PRINTER

SERVICE MANUAL

DX-2000

MECHANICS & ELECTRONICS

CONTENTS

CHAPTER I GENERAL.................................................................... I-1

1. SPECIFICATIONS ...........................................................................................I-1

CHAPTER II MECHANICAL SYSTEM............................................ II-1

1. BLOCK DIAGRAM ..........................................................................................II-1

2. PAPER FEED MECHANISM ..........................................................................II-1

3. PAPER FEED SEQUENCE ............................................................................II-2

4. PAPER PRESSER MECHANISM...................................................................II-3

CHAPTER III ELECTRICAL SYSTEM........................................... III-1

1. COMPOSITION .............................................................................................III-1

2. MAIN PCB FUNCTION ..................................................................................III-1

2.1 I/F Circuit .......................................................................................................................III-1

2.2 Regulator .......................................................................................................................III-1

2.3 Fan Drive Circuit ............................................................................................................III-1

2.4 Motor 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

2.2.2 Mounting the outside frame unit in the Duplex unit....................................................... IV-9

2.3

Duplex I/F PCB ........................................................................................................... IV-10

2.4

Outside Frame R Assy, L Assy................................................................................... IV-11

2.5

Paper Pressing Gear 1, 2 ........................................................................................... IV-12

2.6 Paper Presser Motor................................................................................................... IV-13

2.7 T Belt B40S2M396...................................................................................................... IV-14

2.8 Photo Interrupter 1240................................................................................................ IV-14

3. INSIDE FRAME UNIT ................................................................................. IV-15

3.1 Reversible Frame ....................................................................................................... IV-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

CHAPTER I

GENERAL

SPECIFICATIONS

(1)

Paper type

Cut sheet

Feedable paper weight

: 60 ~ 105 g/ m 2

(2)

Paper size

Max. : 216.0 x 356.0 mm

Min. : 182.0 x 257.0 mm

A4, Letter, Legal, Executive, ISO B5 (not available for

the optional lower paper cassette)

(3)

Input power supply

24V DC ± 10%, max. 0.7 A (supplied from the printer)

(4)

Feeding system

Type

:Reversal type

Paper feeding system

:Alternate paper feeding system

(5)

Paper feed

Paper feeding rate

: 117.6 mm/sec. (20 ppm)

94.1 mm/sec. (16 ppm)

70.6 mm/sec. (12 ppm)

Feedable paper size

:A4 210.0 x 297.0 mm

Letter 215.9 x 279.4 mm

Legal 215.9 x 355.6 mm

Executive 184.2 x 266.7 mm

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

Humidity

: 20% RH ~ 80% RH (No dew

condensation allowed)

2) Idling

Temperature

: 0

C ~ 35

Humidity

: 10% RH ~ 80% RH (No dew

condensation allowed)

3) Storage

Store the unit under the following conditions to ensure reliable performance.

Normal (90% of entire storage period)

C ~ 35

Temperature

Severe (10% of entire storage period)

High

C ~ 60

Low

-20

C ~ 0

Temperature variation (within 3 minutes)

-20

Normal (90% of entire storage period)

35%RH ~ 85%RH

Humidity*

Severe (10% of entire storage period)

High

85%RH ~ 95%RH

Low

10%RH ~ 35%RH

Air pressure

613 ~ 1013hPa

Storage life

0.5 years

*No dew condensation allowed

I-1

4) Transportation conditions

Environment :

Temperature

-20

C ~ 60

Humidity

95%RH or below

5) Vibration

Vibration

acceleration

Vibration

frequency

Measuring method

0.2 G

5 ~ 100 Hz

Refer to the evaluation test standard.

During operation

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)

Signal name

24V

SIDATA

24V

SICLK

GND

/ATTN

/RESET

GND

2) Interface circuit

Connector

74LS07 or equivalent

I-2

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