SHARP MX-DEX1, MX-DEX2 Service Manual

SERVICE MANUAL

CODE: 00ZMXDEX2/S1E

DIGITAL FULL COLOR MULTIFUNCTIONAL SYSTEM OPTION

STAND/1x500 SHEET PAPER DRAWER STAND/2x500 SHEET PAPER DRAWER

MX-DEX1

MODEL

CONTENTS

[1] PRODUCT OVERVIEW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

[2] SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

[3] UNPACKING AND INSTALLATION

* For how to unpacking and installation, refer to the installation manual (00ZMX2700/I1E).

[4] OUTSIDE VIEW AND INTERNAL STRUCTURE . . . . . . . . . . . . . . 4-1

[5] OPERATIONAL DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

[6] DISASSEMBLY AND ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

[7] MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

[8] ADJUSTMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

[9] SELF-DIAGNOSIS AND TROUBLE CODES . . . . . . . . . . . . . . . . . 9-1

MX-DEX2

[10] ELECTRICAL SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1

[11] OTHER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1

 PARTS GUIDE

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.

This document has been published to be used

SHARP CORPORATION

for after sales service only. The contents are subject to change without notice.

CONTENTS

[1] PRODUCT OVERVIEW . . . . . . . . . . . . . . . . .1-1

[2] SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . .2-1

[3] UNPACKING AND INSTALLATION

* For how to unpacking and installation, refer to the

installation manual (00ZMX2700/I1E).

[4] OUTSIDE VIEW AND INTERNAL STRUCTURE

1. Part Names and Functions . . . . . . .. . . . . .4-1

[5] OPERATIONAL DESCRIPTIONS

1. Lift Operation . . . . . . . . . . . . . . . . . .. . . . . .5-1

2. Paper Feed Operation . . . . . . . . . . .. . . . . .5-1

3. "Turbo" Paper Feed Operation . . . .. . . . . .5-2

4. Paper Presence Detection. . . . . . . .. . . . . .5-2

5. Paper Size Detection in Each Paper

Feed Tray . . . . . . . . . . . . . . . . . . . .. . . . . .5-2

6. Paper level detection . . . . . . . . . . . .. . . . . .5-3

[6] DISASSEMBLY AND ASSEMBLY

1. Paper feed section. . . . . . . . . . . . . .. . . . . .6-1

2. Drive section . . . . . . . . . . . . . . . . . .. . . . . .6-3

3. Miscellaneous . . . . . . . . . . . . . . . . .. . . . . .6-5

[7] MAINTENANCE

1. Maintenance Table . . . . . . . . . . . . . . . . . . 7-1

[8] ADJUSTMENT

1. Adjustment Item List . . . . . . . . . . . . . . . . . 8-1

2. Detailed Procedures . . . . . . . . . . . . . . . . 8-1

[9] SELF-DIAGNOSIS AND TROUBLE CODES

1. Simulations. . . . . . . . . . . . . . . . . . . . . . . . 9-1

2. Self-diagnosis. . . . . . . . . . . . . . . . . . . . . . 9-2

3. Trouble Code List . . . . . . . . . . . . . . . . . . . 9-3

4. Trouble Code Details . . . . . . . . . . . . . . . . 9-3

[10] ELECTRICAL SECTION

1. Electronic/Mechanical Parts

Relationship Diagram . . . . . . . . . . . . . . . 10-1

2. Block Diagram . . . . . . . . . . . . . . . . . . . . 10-2

3. Wiring Diagram. . . . . . . . . . . . . . . . . . . . 10-3

[11] OTHER

1. Note for installation of the heater in a

certain destination . . . . . . . . . . . . . . . . . 11-1

 PARTS GUIDE

[1] PRODUCT OVERVIEW

This model is an externally mounted paper feeder designed to attach to and work with the main unit.

Typically, it can contain 500 sheets of paper (80 g/m

Service Manual

ing the user to handle large copy jobs without having to refill paper

), thus allow-

frequently.

Staple cartridge (Approx. 5000 x 3) (MX-SCX1)

Punch module

●

2-hole (MX-PNX1A)

●

3-hole (MX-PNX1B)

●

4-hole (MX-PNX1C)

●

4-hole (broad space)

(MX-PNX1D)

Staple cartridge (Approx. 5000 x 3) (AR-SC2)

Punch module

●

2-hole (AR-PN1A)

●

3-hole (AR-PN1B)

●

4-hole (AR-PN1C)

●

4-hole (broad space)

(AR-PN1D)

(Including document control)

CC authentication version

Security

ROM

For document control PWB

(MX-FRX1)

256MB expansion memory board

Finisher (MX-FNX1)

Paper pass unit (MX-RBX1)

Saddle stitch finisher (MX-FNX2)

Data security kit

Commercial version

(MX-FRX1U)

(MX-SMX1)

Barcode font kit

ROM

(AR-PF1)

Security

ROM

For document control PWB

Device Tray with USB Hub MX-RKX1)

PCL5c/PCL6 driver

RSPF





HDD

Copier/Printer (PCL) /Scanner model

(MX-2300N) (MX-2700N)

Stand/1x500 sheet paper drawer (MX-DEX1)

Printer expansion kit (PCL)

(MX-PBX1)

(For MX-2300G/2700G)

Internet Fax expansion kit

(MX-FWX1)

Application integration module

Network scanner (Sharpdesk 1 license)

Network scanner expansion kit

(MX-NSX1)

Sharpdesk 1 license kit

Sharpdesk 5 license kit

(MX-USX1/

USX5)

Sharpdesk 100 license kit

Reversing single pass feeder (MX-RPX1)

SPLC-c driver



HDD



Copier/Printer (SPLC-c) model

(MX-2300G) (MX-2700G)

Stand/2x500 sheet paper drawer (MX-DEX2)

PS3 expansion kit

CD ROM

(MX-PKX1)

Sharpdesk 10 license kit

Sharpdesk 50 license kit

(MX-US10/

US50)

Application communication module

External account module

Document cover (MX-VRX1)

Exit tray unit (MX-TRX1)

Large capacity tray (MX-LCX1)

Facsimile expansion kit (MX-FXX1)

FAX memory (8MB) (packed together)

(For MX-2300G/2700G)

(MX-AMX1)

(MX-USA0)

(MX-AMX2)

MX-DEX1/DEX2 PRODUCT OVERVIEW 1 – 1

(MX-AMX3)

[2] SPECIFICATIONS

MX-DEX1 MX-DEX2

Type One-tier paper feed desk Two-tier paper feed desk Transport speed Operable within the speed range of 124 to 248 mm/s (at 23 to 27 cpm).

Transport reference Center reference Number of tray tiers 1 tier 2 tiers Paper level detection The paper feeder detects the amount of remaining paper and indicates one of four levels (100%, 67%, 33%, and none). Paper feed system Paper pick-up with the aid of a take-up roller; torque limiter separation system Paper refill method The paper feeder adopts a front loading type tray; paper can be refilled from the upper part. Vertical tray movement time Up: within 7 seconds (with no paper loaded; time required from tray insertion to "empty" detection).

Drive mechanism Transport motor (brushless DC motor) controlled by a built-in controller board Heater Service parts (kit): When installing, refer to [11]. Jam processing Can be done with the right-hand side door open or the tray drawn out. Paper size A3, B4, A4, A4R, B5, B5R, 8K, 16K, 16KR

Paper size changing method Guide adjustment mechanism that can be adjusted by the user. Paper type setting Provided Factory default paper size setting The paper guide is set to its maximum width when shipped from the factory. Supported paper type/weight Plain paper: 60 to 105 g/m Paper capacity Standard paper: 500 sheets (80 g/m Supported paper types Plain paper, printed paper (without backing paper), recycled paper, letter head, pre-punched paper, color paper

Paper size detection *8K, 16K, 16KR: manual entry Power supply Supplied from the main unit

Power consumption 20W Dimensions (W x D x H) 720 x 670 x 303 (mm), 28 22/64 x 26 3/8 x 11 15/16 (inch) (inclusive of the adjuster)

Weight Approx. 20 kg (44.1 lbs) Approx. 23.5 kg (51.8 lbs) Installation/maintenance Installed by service personnel Optional detection Auto detection supported Packaged items Parts for mounting, installation cautionary note

Speed can be selected using a communication command.

Down: the tray lowers by its own weight.

11"x 17", 8.5" x 14", 8.5" x 13", 8.5" x 11", 8.5" x 11"R, 7.25" x 10.5"R

(16 to 28 lbs)

(21 lbs)) Standard paper: 500 sheets x 2 (80 g/m2 (21 lbs))

* The user can choose from these paper types. Auto detection for various A and B sizes (Auto-AB): A3, B4, A4, A4R, B5, B5R, 8.5" x 13" Auto detection for inch-based sizes (Auto-Inch): 11"x 17", 8.5" x14", 8.5" x 11", 8.5" x11"R, 7.25" x 10.5"R

590 x 670 x 303 (mm), 23 15/64 x 26 3/8 x 11 15/16 (inch) (exclusive of the adjuster)

Service Manual

MX-DEX1/DEX2 SPECIFICATIONS 2 – 1

[4] OUTSIDE VIEW AND INTERNAL STRUCTURE

Service Manual

1. Part Names and Functions

A. Internal Structure

• MX-DEX1

• MX-DEX2

2 3

6 7

No. Name No. Name

1 Take-up roller 1 5 Take-up roller 2 2 Paper feed roller 1 6 Paper feed roller 2 3 Separation roller 1 7 Separation roller 2 4 Vertical transport roller

MX-DEX1/DEX2 OUTSIDE VIEW AND INTERNAL STRUCTURE 4 – 1

B. Sensors and Switches

• MX-DEX1

3 2

• MX-DEX2

4 5

13 14

3 2 1 4 5

8 7

9 6

13 14

12 15 17 19 18

No. Signal Name Type Function/operation Activation condition

1 DCSI1 Desk 1 attachment sensor – This sensor detects when desk 1 is attached. The signal is Low level when the

2 DCSS11 Desk 1 rear edge switch 1 Tact switch The paper feeder recognizes that the tray for desk 1 3 DCSS12 Desk 1 rear edge switch 2 Tact switch 4 DCSS13 Desk 1 rear edge switch 3 Tact switch 5 DCSS14 Desk 1 rear edge switch 4 Tact switch 6 DCSI2 Desk 2 attachment sensor – This sensor detects when desk 2 is attached. The signal is Low level when the

7 DCSS21 Desk 2 rear edge switch 1 Tact switch The paper feeder recognizes that the tray for desk 2 8 DCSS22 Desk 2 rear edge switch 2 Tact switch

9 DCSS23 Desk 2 rear edge switch 3 Tact switch 10 DCSS24 Desk 2 rear edge switch 4 Tact switch 11 DCSPD1 Desk 1 paper level sensor Transmission

12 DCSPD2 Desk 2 paper level sensor Transmission

13 DSW_DSK Right door open/close

sensor

14 DPFD1 Desk 1 transport sensor Transmission

15 DPED1 Desk 1 paper presence

sensor

16 DLUD1 Desk 1 upper limit sensor Transmission

17 DPFD2 Desk 2 transport sensor Transmission

18 DPED2 Desk 2 paper presence

sensor

19 DLUD2 Desk 2 upper limit sensor Transmission

type

type Transmission type

type Transmission

type

type Transmission

type

has been inserted when any of desk 1 rear edge switches 1 to 4 turns ON. This sensor detects the paper size of the tray in desk 1.

has been inserted when any of desk 2 rear edge switches 1 to 4 turns ON. This sensor detects the paper size of the tray in desk 2.

This sensor detects the amount of paper remaining in desk 1.

This sensor detects the amount of paper remaining in desk 2. This sensor detects when the right door is opened or closed. This sensor detects when paper is in the transport path for desk 1.

This sensor detects when there is paper in desk 1. The signal is Low level when there is

This sensor detects when the tray in desk 1 reaches its upper limit. This sensor detects when paper is in the transport path for desk 2.

This sensor detects when there is paper in desk 2. The signal is Low level when there is

This sensor detects when the tray in desk 2 reaches its upper limit.

desk is attached. The signal becomes Low level when any of the four switches is pressed.

The signal becomes Low level when desk 1 is detected being empty.

The signal is Low level when the cover is open. The signal is Low level when paper is transported.

paper in desk 1. The signal is High level when the tray in desk 1 is at its upper limit. The signal is Low level when paper is transported.

paper in desk 2. The signal is High level when the tray in desk 2 is at its upper limit.

MX-DEX1/DEX2 OUTSIDE VIEW AND INTERNAL STRUCTURE 4 – 2

C. Drive and Control Components

• MX-DEX1

1 5

2 3

• MX-DEX2

1 5

2 3 4

6 7

No. Signal Name Type Function/operation Activation condition

1 DPFM Desk main motor DC brushless

2 DTRC Desk transport clutch Electromagnetic

3 DPUC1 Desk 1 paper feed clutch Electromagnetic

4 DPUC2 Desk 2 paper feed clutch Electromagnetic

5 DLUM1 Desk 1 lift-up motor DC brush motor This motor lifts up the tray in desk 1. The signal becomes High level when tray

6 DLUM2 Desk 2 lift-up motor DC brush motor This motor lifts up the tray in desk 2. The signal becomes High level when tray

7 – Desk control PWB – This PWB controls and drives the desk. –

8 – Desk 1 size detection PWB – Detects the paper size. –

9 – Desk 2 size detection PWB – Detects the paper size. – 10 – Desk heater (Service parts (kit):

When installing, refer to [11].)

motor

clutch

– This heater is used to keep warm the

This motor drives the paper feed and transport sections.

This clutch controls the ON/OFF status of the vertical transport roller.

This clutch controls the ON/OFF status of the paper feed roller 1. This clutch controls the ON/OFF status of the paper feed roller 2.

Desk interior.

The signal becomes High level when a Job Start request is received; Low level when a Job End request is received. The signal becomes High level when a paper feed request is received.

The signal becomes High level when a paper feed request is received. The signal becomes High level when a paper feed request is received.

insertion is detected; Low level when the upper limit sensor (DLUD1) turns ON.

insertion is detected; Low level when the upper limit sensor (DLUD2) turns ON.

–

MX-DEX1/DEX2 OUTSIDE VIEW AND INTERNAL STRUCTURE 4 – 3

[5] OPERATIONAL DESCRIPTIONS

Service Manual

1. Lift Operation

After the tray has been inserted, the lift motor is turned ON, and the tray is lifted to and stopped at a position where it can feed paper with the upper limit sensor (DLUD) turned ON.

The lift-up motor output is as shown below:

Start lift-up Finish lift-up

DLUM

(motor output)

(upper limit sensor)

DLUD

2. Paper Feed Operation

Paper feed operation can be performed if the tray is stationary at a position where it can feed paper (with the upper limit sensor [DLUD] being ON) and there is paper in the tray.

When paper feed takes place, the transport motor (DPFM), the transport clutch (DTRC), and the paper feed clutch (DPUC) operate in the timings shown in the diagrams below. In addition, there are times when the paper feeder speeds up paper feed by performing "turbo" paper feed in the desk so that it can meet the CPM conditions required by the main unit.

[Without "turbo" paper feed]

Job start request received

Preliminary paper feed request received

(transport motor output)

(paper feed clutch)

(transport sensor)

(main unit synchroni-

DPFM

DTRC

(transport clutch)

DPUC1

DPFD1

TRC

zation signal)

Paper feed clutch

OFF control

Paper feed clutch

ON control

Job end request

Resist synchronization

received

[With "turbo" paper feed]

Job start request received

(transport motor output)

(paper feed clutch)

(transport sensor)

(main unit synchroni-

DPFM

DTRC

(transport clutch)

DPUC1

DPFD1

TRC

zation signal)

Deceleration timing

Paper feed clutch

OFF control

Paper feed clutch

ON control

Preliminary paper feed request received

Acceleration timing control

control

Deceleration Deceleration

Acceleration

Resist synchronization

Job end request

received

MX-DEX1/DEX2 OPERATIONAL DESCRIPTIONS 5 – 1

3. "Turbo" Paper Feed Operation

DPFD1 on

Transport speed

(High)

Transport speed

(Process speed)

Sheet-to-sheet distance

Transport speed

(Process speed)

A. When paper is fed from the upper tray:

The paper feeder starts feeding the first

sheet, transporting it at the High speed.

Transport speed

(High)

When the trailing edge of the sheet has passed

4 5

the desk roller, the paper feeder speeds up the transport motor to thereby transport the next sheet at the High speed.

Fetched into the main unit

(Process speed)

Trailing edge of sheet passes the desk roller.

Transport speed

(High)

The transport slows down to the Process speed

2 3

before the sheet reaches the preliminary paper feed stop position.

Deceleration to the Process speed completes before the sheet reaches the preliminary paper feed stop position.

The paper feeder detects the distance between the first and second sheets based on the timings in which the transport sensor DPFD1 turns ON.

The paper feeder starts feeding the second sheet, transporting it at the Process speed since the first sheet is currently in transit from the desk to the main unit.

Transport speed (Process speed)

The paper feeder adjusts the sheet-to-sheet distance by altering the deceleration timing according to the current distance between the first and second sheets, provided that deceleration be completed before the sheet reaches preliminary paper feed stop position.

Deceleration to the Process speed completes before the sheet reaches the preliminary paper feed stop position.

B. When paper is fed from the lower tray:

When paper is fed from the lower tray, the paper feeder performs basically the same procedure as described above: it speeds up the transport motor when the trailing edge of the first sheet passes the desk roller; and slows down the transport motor based on the timing in which DPFD1 turns ON detecting the next sheet.

4. Paper Presence Detection

The paper presence sensor (DPED) checks whether there is paper in the tray when the tray is lifted and stopped at a position where it can feed paper, as well as during paper feed operation.

5. Paper Size Detection in Each Paper Feed Tray

The size of paper contained in each tray is detected based on the status of each of desk rear edge detectors (switches) 1 to 4 as well as on the destination-specific settings.

DCSS11 DCSS21

DCSS12 DCSS22

DCSS14

DCSS13 DCSS23

DCSS24

<A/B sizes> {: ON ✕: OFF

Rear edge detection switches

1234

A3 ✕ { ✕ { A4 {{ ✕ { A4R {{{✕ B4 ✕ {{{ B5 {{ ✕✕ B5R { ✕✕{

{ ✕ {{

8.5 x 13 ✕ {{ ✕

<Inch-based sizes> {: ON ✕: OFF

Rear edge detection switches

1234

11 x 17 ✕ { ✕ {

8.5 x 11 {{✕ {

8.5 x 14 ✕ {{{

7.25 x10.5R { ✕✕{

{ ✕ {{

8.5 x 11R { ✕ { ✕

MX-DEX1/DEX2 OPERATIONAL DESCRIPTIONS 5 – 2

6. Paper level detection

A. Paper level detection

The paper feeder detects the amount of paper remaining in the tray as one of four levels (100%, 67%, 33.3%, and zero), and displays the level it has detected.

B. Detection Method

The paper feeder determines the remaining paper level based on how many times the paper level sensor turns ON during the time between the start of the lift-up of the paper feed tray and the activation (turning ON) of the upper limit sensor.

(State transition chart: How the paper level sensor state changes according to the amount of paper actually remaining during tray lift-up)

Paper absence sensor detects when there is no paper remaining.

When there is no paper

1/3 range Sensor: logical Low

Paper level 1/3 position

2/3 range Sensor: logical High

Paper level 2/3 position

3/3 range Sensor: logical Low

Paper level 3/3 position

DPED

(Paper presence sensor)

Rotary panel Actuator for detecting the amount of remaining paper

DCSPD (Paper level sensor)

MX-DEX1/DEX2 OPERATIONAL DESCRIPTIONS 5 – 3

[6] DISASSEMBLY AND

ASSEMBLY

1. Paper feed section

A. Paper feed units 1 and 2

1) Remove paper feed tray 1 or 2.

2) Remove the right side door.

B. Pickup roller and paper feed roller

Service Manual

1) Remove paper feed tray 1 or 2.

2) Remove the paper guide.

3) Remove the pickup roller and paper feed roller.

3) Remove paper feed unit 1 or 2.

C. Separation roller

1) Remove paper feed tray 1 or 2.

2) Remove the paper guide.

3) Remove the separation roller.

MX-DEX1/DEX2 DISASSEMBLY AND ASSEMBLY 6 – 1

D. Torque limiter

1) Remove paper feed unit 1 or 2.

2) Remove the E ring and bearing and then remove the paper feed lower PG unit.

E. Right door open/close sensor

1) Remove paper feed unit 1.

2) Remove the right door open/close sensor.

3) Remove the pressure release spring and then remove the paper feed lower PG reinforcing plate. Remove the separation pressing spring and separation pressure release plate.

4) Remove the separation roller. Remove the E ring and then remove the separation shaft. Remove the torque limiter.

F. Vertical transport roller

1) Remove paper feed unit 2

2) Remove the ground plate. Remove each part and then remove the vertical transport roller.

G. Upper limit sensor/

paper presence sensor

1) Remove paper feed unit 1 or 2.

2) Remove the paper feed vertical transport PG unit and then remove the belt. (This step is only necessary for paper feed unit 2).

MX-DEX1/DEX2 DISASSEMBLY AND ASSEMBLY 6 – 2

3) Remove the paper feed upper PG reinforcing plate.

4) Remove the bracket for each sensor.

3) Remove the size detection PWB after releasing the pawl.

J. Paper level sensor

1) Remove paper feed tray 1 or 2.

2) Remove the paper level sensor.

DEX2 ONLY

H. Transport sensor

1) Remove paper feed unit 1 or 2.

2) Remove the paper feed vertical transport PG unit. (This step is only necessary for paper feed unit 2).

3) Remove the paper feed upper PG reinforcing plate.

4) Remove the sensor holder.

I. Size detection PWB

1) Remove paper feed tray 1 or 2.

2) Remove the size detection PWB unit.

2. Drive section

A. Drive unit

1) Remove paper feed tray 1 or 2.

2) Remove the rear cabinet.

3) Remove the drive unit.

DEX2 ONLY

MX-DEX1/DEX2 DISASSEMBLY AND ASSEMBLY 6 – 3

B. Main motor

1) Remove paper feed tray 1 or 2.

2) Remove the rear cabinet.

3) Remove the main motor.

C. Lift-up motor

1) Remove paper feed tray 1 or 2.

2) Remove the rear cabinet.

3) Remove the lift-up motor unit.

D. Desk 1 paper feed clutch

1) Remove the drive unit.

2) Disconnect the connector and then remove each part.

DEX2 ONLY

4) Remove the lift-up coupling after releasing the pawl.

Detach the lift-up spring from the lift-up motor.

3) Remove the drive frame.

4) Remove the harness seat and each part and then remove desk 1 paper feed clutch unit.

MX-DEX1/DEX2 DISASSEMBLY AND ASSEMBLY 6 – 4

+ 30 hidden pages