SHARP AL1655, AL1651, AL1661 Service Manual

(AL-1651CS)

SERVICE MANUAL

CODE : 00ZAL1651CS1E

DIGITAL MULTIFUNCTIONAL SYSTEM

MODEL

CONTENTS

[ 1 ] GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1

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

[ 3 ] CONSUMABLE PARTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 1

[ 4 ] EXTERNAL VIEWS AND INTERNAL STRUCTURES . . . . . . . . . 4 - 1

[ 5 ] UNPACKING AND INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . 5 - 1

[ 6 ] COPY PROCESS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 1

[ 7 ] OPERATIONAL DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 1

[ 8 ] DISASSEMBLY AND ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . 8 - 1

[ 9 ] ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 1

[10] TEST COMMAND, TROUBLE CODES. . . . . . . . . . . . . . . . . . . . 10 - 1

AL-1651CS

[11] USER PROGRAMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 1

[12] ELECTRICAL SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 - 1

[13] CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 - 1

[14] FIRMWARE DOWNLOAD PROCEDURES. . . . . . . . . . . . . . . . . 14 - 1

Parts marked with “ ” are important for maintaining the safety of the machine. Be sure to replace these parts with the replacement parts specified to maintain the safety and performance of the machine.

This document has been published to be used

SHARP CORPORATION

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

CAUTION

This product is a class 1 laser product that complies with 21CFR 1040 of the CDRH standard and IEC825. This means that this machine does not produce hazardous laser radiation. The use of controls, adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.

This laser radiation is not a danger to the skin, but when an exact focusing of the laser beam is achieved on the eye’s retina, there is the danger of spot damage to the retina.

The following cautions must be observed to avoid exposure of the laser beam to your eyes at the time of servicing.

1) When a problem in the laser optical unit has occurred, the whole optical unit must be exchanged as a unit, not as individual parts.

2) Do not look into the machine with the main switch turned on after removing the developer unit, toner cartridge, and drum cartridge.

3) Do not look into the laser beam exposure slit of the laser optical unit with the connector connected when removing and installing the optical system.

4) The middle frame contains the safety interlock switch.

Do not defeat the safety interlock by inserting wedges or other items into the switch slot.

LASER WAVE – LENGTH : 770 ~ 795nm Pulse times : 11.82µs/7mm Out put power : 0.15mW

± 0.01mW

CAUTION

INVISIBLE LASER RADIATION,

WHEN OPEN AND INTERLOCKS DEFEATED.

AVOID EXPOSURE TO BEAM.

VORSICHT

UNSICHTBARE LASERSTRAHLUNG, WENN ABDECKUNG GEÖFFNET UND SICHERHEITSVERRIEGELUNG ÜBERBRÜCKT. NICHT DEM STRAHL AUSSETZEN.

VARO !

AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA NÄKYMÄTTÖMÄLLE LASERSÄTEILYLLE ÄLÄ KATSO SÄTEESEEN.

ADVARSEL

USYNLIG LASERSTRÅLNING VED ÅBNING, NÅR SIKKERHEDSBRYDERE ER UDE AF FUNKTION. UNDGÅ UDSAETTELSE FOR STRÅLNING.

VARNING !

OSYNLIG LASERSTRÅLNING NÄR DENNA DEL ÄR ÖPPNAD OCH SPÄRREN ÄR URKOPPLAD. BETRAKTA EJ STRÅLEN. – STRÅLEN ÄR FARLIG.

At the production line, the output power of the scanner unit is adjusted to 0.57 MILLI-WATT PLUS 20 PCTS and is maintained constant by the operation of the Automatic Power Control (APC). Even if the APC circuit fails in operation for some reason, the maximum output power will only be 15 MILLI-WATT 0.1 MICRO-SEC. Giving and accessible emission level of 42 MICRO-WATT which is still-less than the limit of CLASS-1 laser product.

Caution

This product contains a low power laser device. To ensure continued safety do not remove any cover or attempt to gain access to the inside of the product. Refer all servicing to qualified personnel.

The foregoing is applicable only to the 220V model, 230V model and 240V model.

VAROITUS! LAITTEEN KÄYTTÄMINEN MUULLA KUIN TÄSSÄ KÄYTTÖOHJEESSA MAINITULLA TAVALLA SAATTAA ALTISTAA KÄYTTÄJÄN TURVALLISUUSLUOKAN 1 YLITTÄVÄLLE NÄKYMÄTTÖMÄLLE LASERSÄTEILYLLE.

VARNING - OM APPARATEN ANVÄNDS PÅ ANNAT SÄTT ÄN I DENNA BRUKSANVISNING SPECIFICERATS, KAN ANVÄNDAREN UTSÄTTAS FÖR OSYNLIG LASERSTRÅLNING, SOM ÖVERSKRIDER GRÄNSEN FÖR LASERKLASS 1.

LUOKAN 1 LASERLAITE KLASS 1 LASER APPARAT

[1] GENERAL

1. Major functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

2. Note for servicing and handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

[2] SPECIFICATIONS

1. Basic Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2. Operation specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

3. Copy performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

4. SPLC (JBIG GDI) printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

5. Scan function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

6. RSPF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

[3] CONSUMABLE PARTS

1. Supply system table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

2. Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3. Production control number(lot No.) identification . . . . . . . . . . . . . . . . . . . . . 3-2

[4] EXTERNAL VIEWS AND INTERNAL STRUCTURES

1. Appearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

2. Internal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

3. Operation panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

4. Motors and solenoids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

5. Sensors and switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

6. PWB unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

7. Cross sectional view. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

[5] UNPACKING AND INSTALLATION

1. Copier installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

2. Cautions on handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

3. Checking packed components and accessories . . . . . . . . . . . . . . . . . . . . . 5-1

4. Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

5. Removing protective packing materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

6. Installing the TD cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

7. Loading the paper tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

8. Power to copier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

9. Software for AL-1651CS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

A. Before installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

B. Installing the software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

C. Setting up button manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

10. Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10

A. USB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10

B. RJ45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10

11. Moving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10

[6] COPY PROCESS

1. Functional diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

2. Outline of print process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

3. Actual print process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

[7] OPERATIONAL DESCRIPTIONS

1. Outline of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

2. Scanner section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

A. Scanner unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

B. Optical system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

C. Drive system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

3. Laser unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

A. Basic structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

B. Laser beam path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

C. Composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

4. Fuser section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

A. General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4

5. Paper feed section and paper transport section. . . . . . . . . . . . . . . . . . . . . . 7-4

A. Paper transport path and general operations . . . . . . . . . . . . . . . . . . . . 7-4

6. Process unit new drum detection mechanism . . . . . . . . . . . . . . . . . . . . . . . 7-7

7. RSPF section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7

A. Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7

B. Document transport path and basic composition. . . . . . . . . . . . . . . . . . 7-7

C. Operational descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8

D. Cases where a document jam is caused. . . . . . . . . . . . . . . . . . . . . . . . 7-8

E. RSPF (SPF) open/close detection (book document detection) . . . . . . . 7-8

8. D-D (Duplex to Duplex) mode paper/document transport (Duplex model). . 7-8

A. Initial state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8

B. Front copy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8

C. Back copy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9

9. Shifter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9

[8] DISASSEMBLY AND ASSEMBLY

1. High voltage section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

A. List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

B. Disassembly procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

C. Assembly procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

D. Charger wire cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

E. Charger wire replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

2. Operation panel section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

A. List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

B. Disassembly procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

C. Assembly procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

3. Optical section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

A. List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

B. Disassembly procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

C. Assembly procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

4. Fusing section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5

A. List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5

B. Disassembly procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5

C. Assembly procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7

5. Tray paper feed/transport section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7

A. List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7

B. Disassembly procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7

CONTENTS

[9] ADJUSTMENTS

[10] TEST COMMAND, TROUBLE CODES

[11] USER PROGRAM

[12] ELECTRICAL SECTION

[13] CIRCUIT DIAGRAM

[14] FIRMWARE DOWNLOAD PROCEDURES

C. Assembly procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-12

6. Manual paper feed section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-12

A. List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-12

B. Disassembly procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-12

C. Assembly procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-14

D. Pressure plate holder attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-14

7. Rear frame section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-14

A. List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-14

B. Disassembly procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-14

C. Assembly procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-15

8. Power section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-15

A. List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-15

B. Disassembly procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-15

C. Assembly procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-15

9. Duplex motor section (RSPF model only) . . . . . . . . . . . . . . . . . . . . . . . . . .8-15

A. Remove the rear cabinet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-15

B. Remove the main PWB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-15

C. Remove the Duplex motor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-16

10. Reverse roller section (RSPF model only) . . . . . . . . . . . . . . . . . . . . . . . . .8-16

A. Remove the reverse unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-16

B. Remove the reverse roller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-16

11. RSPF section (RSPF model only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-17

A. RSPF. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-17

B. Intermediate tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-17

C. Upper cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-17

D. Pickup unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-17

E. Upper cover of the pickup unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-18

F. Sensor PWB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-18

G. Pickup solenoid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-18

H. Clutch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-18

I. Manual paper feed roller, pickup roller . . . . . . . . . . . . . . . . . . . . . . . . .8-19

J. Transport unit removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-19

K. Belt 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-20

L. Belt 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-20

M. SPF motor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-20

N. Solenoid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-20

O. Clutch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-20

P. Paper supply roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-21

Q. Paper entry sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-21

R. Transport roller 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-21

S. Paper exit roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-22

T. Solenoid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-23

1. Optical section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-1

A. Copy magnification ratio adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-1

B. Image position adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-2

2. Copy density adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-3

A. Copy density adjustment timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-3

B. Note for copy density adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-3

C. Necessary tool for copy density adjustment . . . . . . . . . . . . . . . . . . . . . .9-4

D. Features of copy density adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . .9-4

E. Copy density adjustment procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-4

3. High voltage adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-5

A. Main charger (Grid bias) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-5

B. DV bias check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-5

4. Duplex adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-5

A. Adjusting the paper reverse position in memory for duplex copying . . . .9-5

B. Adjusting trailing edge void in duplex copy mode . . . . . . . . . . . . . . . . . .9-6

5. SPF (RSPF) scan position automatic adjustment . . . . . . . . . . . . . . . . . . . . .9-7

6. RSPF (SPF) mode sub scanning direction magnification ratio adjustment . .9-7

7. Automatic black level correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-8

1. Entering the test command mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-1

2. Key rule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-1

3. List of test commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-1

4. Descriptions of various test commands . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-2

5. Trouble codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-27

A. Trouble codes list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-27

B. Details of trouble codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-27

1. User programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-1

A. Copy mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-1

B. Print mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-2

2. Selecting a setting for a user program . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-2

1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-1

A. Overall block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-1

2. Circuit descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-2

A. Main PWB (MCU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-2

B. DC power circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-11

1. MCU PWB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13-1

2. OPERATION PWB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13-26

3. NIC PWB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13-29

4. POWER SUPPLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13-33

5. ACTUAL WIRING DIAGRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13-35

1. Download procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-1

2. Version acquisition procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-2

3. EEPROM data acquisition procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-3

4. Serial number setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-4

5. Installing procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-4

[1] GENERAL

1. Major functions

Configurations

Item CPM /

Model LT A 4 AL-1651CS 16 15 MB ✕✕ ❍ ❍ ✕ ❍ ❍ ❍ ❍ ✕ ❍ ✕ ❍

PPM

SB/MB2

Tray

SPF R-SPF

Descriptions of items

CPM: Copy speed (Copies Per Minute) SB/MB: SB = Manual feed single bypass, MB = Manual feed multi bypass 2 tray: Second cassette unit SPF: Original feed unit R-SPF: Duplex original feed unit Color scanner: Color scanner function GDI printer: GDI printer function with USB

SPLC: SPLC printer function E-SORT: Electrical sort

Duplex: Auto duplex copy function Shifter: Job separator function FAX: FAX function Sharpdesk: Scanner utilities IEEE1284: Interface port (parallel) USB: Interface port (USB) RJ45: Interface port (Network) External NIC: Interface port (Network)

Descriptions of table

❍: Standard provision ✕: No function or no option available

Opt: Option

Color

Scanner

(push)

GDI

SPLC E-SORT Duplex Shifter FAX

printer

Sharp

desk

IEEE 1284

USB RJ45

(2.0)❍print only

External

NIC

(AL-1651CS)

2. Note for servicing and handling

When the main unit power is repeatedly turned OFF/ON rapidly (for about 1sec), the IC (OA982) on the MCU PWB may malfunction to cause an error (E1-00 Communication error), which does not boot the machine. In case of this error, the blank display is kept for several tens seconds and then "E100" is displayed on the panel display.

Turn off the power and keep it for more than 10sec. Then turn on the power. When the machine is booted.: There is no problem in the MCU PWB. When the machine is not booted.: The MCU PWB trouble

AL-1651CS GENERAL 1 - 1

[2] SPECIFICATIONS

1. Basic Specifications

Item

Type Desktop Copy system Dry, electrostatic Segment (class) Digital personal copier Copier dimensions 20.4" (W) x 19.8" (D) x 15.0" (H) (518mm (W) x 503mm (D) x 380mm (H)) Weight (Approximately) 44.1 lbs. (20kg) Not includes toner cartridge

2. Operation specifications

Section, item Details

Paper feed section

Paper exit section Exit way Face down

Originals Original set Center Registration (left edge)

Optical section

Image forming Photoconductor type OPC (30ø)

Paper feed system 1 tray (250 sheets) + multi bypass (50 sheets) AB system Tray paper feed

section

Multi bypass paper feed section

Inch system Tray paper feed

section

Multi bypass paper feed section

Capacity of output tray 200 sheets

Max. original size A4 (8-1/2" x 14") Original kinds sheet, book Original size detection None

Scanning section Scanning system 3 CCDs (RGB) sensor scanning by lighting white lamp

CCD sensor Resolution 600 dpi Lighting lamp Type CCFL

Output data R, G, B 1 or 8 bits/pixel / A/D 16bit

Writing section Writing system Writing to OPC drum by the semiconductor laser

Laser unit Resolution 600 dpi

Charger Charging system Saw -tooth charging with a grid, / (-) scorotron discharge

Developing Developing system Dry, 2-component magnetic brush development system Cleaning Cleaning system Counter blade system (Counter to rotation)

Paper size A4, B5, A5, 16K (Landscape) Paper weight 56 - 80g/m Paper feed capacity 250 sheets Kinds Standard paper, specified paper, recycled paper Remark User adjustment of front paper guide available Paper size A4, B5, A5, B6, A6 (Post card), 16K (Landscape) Paper weight 52 - 128g/m Paper feed capacity 50 sheets Kinds Standard paper, specified paper, recycled paper, envelope,

OHP, Label (Single copy) Remark User adjustment of side paper guide available Paper size 8-1/2" x 14", 8-1/2 x 11", 8-1/2" x 5-1/2" (Landscape) Paper weight 15 - 21 lbs. Paper feed capacity 250 sheets Kinds Standard paper, specified paper, recycled paper Remark User adjustment of front paper guide available Paper size 8-1/2" x 14", 8-1/2 x 11", 8-1/2" x 5-1/2", 3-1/2" x 5-1/2"

(Landscape) Paper weight 14 - 34.5 lbs. Paper feed capacity 50 sheets Kinds Standard paper, specified paper, recycled paper, OHP, Label,

Envelop (Single copy) Remark User adjustment of side paper guide available

Voltage 560Vrms Power consumption 2.8W

Life 18k

Transfer system (+) DC scorotron system Separation system (-) DC scorotron system

(15 - 21 lbs.)

(14 - 34.5 lbs.)

AL-1651CS SPECIFICATIONS 2 - 1

Section, item Details

Fusing section Fusing system Heat roller system

Upper heat roller type Teflon roller Lower heat roller type Silicon rubber roller Heater lamp type Halogen lamp

Voltage 120V Power consumption 800W

Electrical section Power source Voltage 120V

Frequency 60Hz Rated current 8A

Power consumption Max. Less than 1000W

Average (during copying) 350 Wh/H *1) Average (stand-by) 80Wh/H *1) Pre-heat mode 25Wh/H *1) Auto power shut-off mode 8.8Wh/H *1)

*1) May fluctuate due to environmental conditions and the input voltage.

3. Copy performance

Section, item Details

Copy magnification Fixed magnification

ratios

Zooming

magnification ratios Manual steps (text, photo) 5 steps Copy speed First copy time Tray paper feed 9.6 sec. (Pre-heat mode:25 sec. / Auto power-shut-off mode : 40 sec.)

AB system A4 (Landscape)

AB system B5 (Landscape)

Inch system 8-1/2" x 14" (Landscape)

Inch system 8-1/2" x 11" (Landscape)

Max. continuous copy quantity 99 Void Void area leading edge 1 - 4mm

Warm-up time 0 sec. Power save mode reset time 0 sec. Paper jam recovery time 0 sec.

Copy speed (CPM) Same size 15

Enlargement 15 Reduction 15

Copy speed (CPM) Same size 15

Enlargement 15 Reduction 15

Copy speed (CPM) Same size 12

Enlargement 12 Reduction 12

Copy speed (CPM) Same size 16

Enlargement 16 Reduction 16

Trailing edge 4mm or less, 6mm or less (Duplex copying/both image) Side void area 0.5mm or more (per side)

Image loss leading edge Same size: 3.0mm or less (OC) / 4.0mm or less (SPF/R-SPF/Duplex)

4 Reduction + 3 Enlargement (AB system : 25, 50, 70, 86, 100, 141, 200, 400%) (Inch system : 25, 50, 64, 78, 100, 129, 200, 400%)

OC: 25 - 400%, RSPF 50 - 200% (376 steps in 1% increments)

A4 or Letter/100%/Auto Exposure

4.5mm or less (total of both sides)

Enlarge: 1.5mm or less (OC) / 3.0mm or less (SPF/R-SPF/Duplex) Reduction (50%): 6.0mm or less (OC) / 8.0mm or less (SPF/R-SPF/Duplex)

AL-1651CS SPECIFICATIONS 2 - 2

4. SPLC (JBIG GDI) printer

Print speed Max. 15ppm (A4 / with ROPM) / 16ppm (Letter / with ROPM) First print time 9.6 sec. (without data transfer time) Duplex Yes ROPM Yes CPU None Memory Share the memory with E-SORT function Interface RJ45 (10 base) / USB 2.0 Network Internal NIC Emulation SPLC (JBIG GDI) MIB support No Resolution 600dpi *1 Supported OS Win 95 / 98 / Me / NT 4.0 / 2000 / XP WHQL support Yes *2 Application Status window

*1: Engine Resolution *2: Running change

5. Scan function

Type Flat Bed Color Scanner Scanning system Document glass/RSPF Light source 3 CCDs (RGB) sensor scanning by lighting white lamp (2 pcs of CCFL) Resolution Optical: 600 x 1200dpi

Setting range: 50 - 9600dpi (Preview resolution is fixed at 75dpi) Originals Sheet type / Book type Output data R, G, B 1 or 8 bits/pixel / A/D 16bit Scan range OC / RSPF: 8.5" (297mm) (L) x 14" (431mm) (W)

Original position: Platen: Left center / SPF: Right center Scan speed OC / SPF: Max. 2.88ms/line (Color/Gray scale), Max. 0.96 ms/line (B & W) Protocol TWAIN / WIA (Only XP) / STI Support file format RAW / JPEG Interface USB2.0 Scanner utility Button Manager / Sharpdesk Scan key/lamp Yes Duplex scan No Supported OS Win 98 / Me / 2000 / XP Void area No (User settable by PC) WHQL supported Yes *1

*1: Running change

6. RSPF

Original capacity 30 sheets (52 to 90g/m Original size A4 to A5/10" x 14" to 5-1/2" x 8-1/2" Original replacement speed 12CPM (A4/8-1/2" x 11"Landscape) Job speed (Tray1,Landscape) Single copy S to S 12CPM

S to D 5.6CPM D to S 5.5CPM D to D 5.2CPM

Multi copy S to S 16CPM

D to S 16CPM Original placement Face up Original weight 52 to 90g/m Mixed feeding No Original which cannot Thermal papers, originals with punch holes for files, be used folded paper, transparent originals

such as OHP films, stapled or clip used originals with cover up liquid used, Originals with tape

sealed, originals with high level frictional coefficient such as photos or catalogs.

(14 - 23.9lbs.)

AL-1651CS SPECIFICATIONS 2 - 3

) (14 to 23.9 lbs.)

[3] CONSUMABLE PARTS

1. Supply system table

Common to all destinations

No. Name Content Life Product name Package

1 Develop cartridge (Black) x 1

(Except Europe)

2 Drum cartridge Drum cartridge 18K AL-100DR 5

2. Environmental

The environmental conditions for assuring the copy quality and the machine operations are as follows:

Toner/developer cartridge x 1 (Toner: Net weight 124g) (Developer: Net weight 190g)4K(5% document)

AL-110TD 5

(1) Normal operating condition

Temperature:20 - 25°C Humidity:65 ± 5%RH

(2) Acceptable operating condition

Humidity (RH)

85%

60%

20%

10˚C 30˚C 35˚C

(3) Optical condition

Humidity (RH)

90%

60%

(4) Supply storage condition

Humidity (RH)

90%

20%

–5˚C45˚C

15%

–25˚C30˚C40˚C

AL-1651CS CONSUMABLE PARTS 3 - 1

3. Production control number(lot No.) identification

Production month Production day Destination code (Dealer, distributor, OEM, etc.) Production place (SOCC: Fixed to B.) End digit of year Version No.

* Destination

Division No.

EX Destination A same pack G

B same pack H

Option Destination A P

The label on the drum cartridge shows the date of production. (SOCC production)

Production month Production day Destination code (Dealer, distributor, OEM, etc.) Production place (SOCC: Fixed to B.) End digit of year Version No.

Production control label attachment position

Production control label attachment position(*1)

Division No. Ex production 1 Option 2 Same pack 3

*1 The production control label is not attached to the cartridge of a

China product.

X000119Ver.A 1

Production month (1 - 9 = Jan. - Sep. 0 = Oct. X = Nov. Y = Dec.) Serial number of month Fixed to 1. Pack division (See table below) End digit of year Version No.

AL-1651CS CONSUMABLE PARTS 3 - 2

[4] EXTERNAL VIEWS AND INTERNAL STRUCTURES

1. Appearance

RSPF

Interface

1 2

3 4

1 Document glass 2 Operation panel 3 Front cover 4 Paper tray 5 Side cover 6 Side cover open button

7 Bypass tray paper guides 8 Bypass tray 9 Reversing tray 10 Original guides 11 Document feeder cover 12 Document feeder tray 13 Exit area 14 Paper output tray 15 Paper output tray extension 16 Power switch 17 Handles 18 Power cord 19 USB port 20 LAN port 21 Paper holding arm

5 6 7

14 15

16 17

2. Internal

TD cartridge Drum cartridge

1 Side cover 2 Fusing unit release lever 3 Transfer charger

4 Charger cleaner 5 Front cover

3 4

AL-1651CS EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 1

3. Operation panel

Display

READY TO COPY. 100% 8.5x11 0

12345

AL-1651CS

6 7 8 9 10 11 12 13 14 15 16 17

18 19

1 [MODE SELECT] key / Mode indicators

Press this key to select the mode. The indicator of the selected mode lights (copy, printer, scanner).

3 Numeric keys

Use these to enter the number of copies and other numerical settings. The keys can also be used to select items in function setting menus.

5 Power save indicator

This lights up when the power save function is activated.

7 Error indicator

This lights steadily or blinks when a paper misfeed or other error occurs.

9 Tray location indicator

Indicates the selected paper tray. The indicator blinks when the tray is out of paper or is not closed.

11 [2-SIDED COPY] key

Use to copy both sides of an original.

13 [ ] key ( ), [ ] key ( ), [ENTER] key

Press the [ ] key ( ) or [ ] key ( ) to select an item in a function setting menu. Press the [ENTER] key to enter a selection.

15 [COPY RATIO] key

Press to select an enlargement or reduction ratio.

To select a preset ratio setting, press the [COPY RATIO] key and select the desired preset ratio. To select a ratio that is not preset, press the [COPY RATIO] key, select the preset ratio that is closest to the desired ratio, and then press the [ ] key ( ) or

] key ( ) to increase or decrease the ratio in increments

[

of 1%.

17 [CLEAR ALL] key ( )

This returns all functions to the default settings. When pressed in a setting menu, this returns the settings and display to the initial state.

Shows the selected paper size.

A checkmark " " appears when the exposure has been

changed, or when two-sided copying, sort, 2 IN 1, or margin shift is selected.

2 Display

This shows messages indicating the machine status and any problems that occur, as well as user programs and function setting menus.

4 [CLEAR] key ( )

Use this to clear the set number of copies, as well as cancel a job that is in progress. When a setting menu appears, use this key to move back to the previous menu level.

6 RSPF indicator

This lights up when an original is placed in the RSPF.

8 [TRAY SELECT] key ( )

Use to select the paper tray that has the desired paper for copying.

10 [MENU] key

Press this key to select the paper size for copying, to configure a user program or to display the total count.

12 [E-SORT/SP.FUN] key

Press to select the sort function, 2 in 1 copy function, or margin shift function.

14 [EXPOSURE] key

Use to switch from auto exposure adjustment to text mode or photo mode.

16 [START] key ( ) / Ready indicator

The ready indicator lights up when copying or scanning is possible. To begin copying, press the [START] key ( ).

The [START] key ( ) is also pressed to return to normal operation from auto power shut-off mode.

18 Shows the current copy ratio.

Shows the number of copies that has been entered with the

numeric keys.

AL-1651CS EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 2

4. Motors and solenoids

No. Part name Control signal Function / Operation

1 Main motor MM Drives the copier.

2 Scanner motor MRMT Drives the optical mirror base (scanner unit).

3 Toner motor TM Supplies toner.

4 Cooling fan motor VFM Cools the optical section.

5 Resist roller solenoid RRS Resist roller rotation control solenoid

6 Paper feed solenoid CPFS1 Cassette Paper feed solenoid 1

7 Multi paper feed solenoid MPFS Multi manual pages feed solenoid

8 SPF motor SPFM Drives the single pass feeder

9 Duplex motor DMT Devices the duplex paper transport section 10 Original feed solenoid SPUS Original pick up solenoid 11 SPF paper feed solenoid SPFS Original feed solenoid 12 SPF gate solenoid SGS Controls the document reverse gate. 13 Shifter motor SFTM Drives the shifter.

AL-1651CS EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 3

5. Sensors and switches

No. Name Signal Type Function Output

1 Scanner unit home position

sensor 2 POD sensor POD Transmission sensor Paper exit detection "H" at paper pass 3 PPD2 sensor PPD2 Transmission sensor Paper transport detection 2 "L" at paper pass 4 Cassette detection switch CED1 Micro-switch Cassette installation detection "H" at cassette insertion 5 PPD1 sensor PPD1 Transmission sensor Paper transport detection 1 "L" at paper pass 6 Door switch DSW Micro-switch Door open/close detection

7 Drum reset switch DRST Micro-switch New drum detection switch Instantaneously "H" at insertion of

8 SPF sensor SPID/

9 SPPD sensor SPPD Transmission sensor Paper transport detection "L" at paper pass

MHPS Transmission sensor Scanner unit home position detection "H" at home position

1 or 0V of 24V at door open

(safety switch for 24V)

new drum

SD SW

Transmission sensor Paper entry detection

Cover open/close detection

"L" at paper pass

AL-1651CS EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 4

6. PWB unit

No. Name Function

1 Exposure lamp inverter PWB Exposure lamp (CCFL) control 2 Main PWB (MCU) Copier control 3 Operation PWB Operation input/display 4 Power PWB AC power input, DC voltage control, High voltage control 5 CCD sensor PWB For image scanning 6 LSU motor PWB For polygon motor drive (In the LSU) 7 TCS PWB For toner sensor control 8 LSU PWB For laser control (In the LSU) 9 NIC PWB 10 BASE-T Network I/F

AL-1651CS EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 5

7. Cross sectional view

1 4

3 5 18 15

16 17

111214 13

No. Part name Function and operation

1 Scanner unit Illuminates the original with the copy lamp and passes the reflected light to the lens unit(CCD). 2 Exposure lamp Exposure lamp (CCFL) Illuminates original 3 LSU (Laser unit) Converts the original image signal into laser beams and writes onto the drum. 4 Paper exit roller Roller for paper exit 5 Main charger Provides negative charges evenly to the drum surface. 6 Heat roller Fuses toner on the paper. (Teflon roller) 7 Pressure roller Fuses toner on the paper. (Silicon rubber roller) 8 Drum Forms images. 9 Transfer unit Transfers images onto the drum.

10 Pickup roller Picks up the manual feed paper. (In multi feed only) 11 Manual paper feed tray Tray for manual feed paper 12 Manual paper feed roller Transport the paper from the manual paper feed port. 13 PS roller unit Takes synchronization between the lead edge and the rear edge of the paper. 14 Paper feed roller Picks up a sheet of paper from the cassette. 15 Pickup roller Picks up documents. 16 Separation roller Separates documents to feed properly. 17 PS roller Feeds documents to the scanning section. 18 Paper exit roller Discharges documents.

AL-1651CS EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 6

[5] UNPACKING AND INSTALLATION

1. Copier installation

Improper installation may damage the copier. Please note the following during initial installation and whenever the copier is moved.

Caution: If the copier is moved from a cool place to a warm place, con-

densation may form inside the copier. Operation in this condition will cause poor copy quality and malfunctions. Leave the copier at room temperature for at least 2 hours before use.

Do not install your copier in areas that are:

• damp, humid, or very dusty

• exposed to direct sunlight

2. Cautions on handling

Be careful in handling the copier as follows to maintain the performance of this copier.

Do not drop the copier, subject it to shock or strike it against any object.

Do not expose the drum cartridge to direct sunlight. Doing so will damage the surface (green portion) of the drum cartridge,

causing poor print quality.

• poorly ventilated

• subject to extreme temperature or humidity changes, e.g., near an

air conditioner or heater.

The copier should be installed near an accessible power outlet for easy connection.

Be sure to connect the power cord only to a power outlet that meets the specified voltage and current requirements.

Also make certain the outlet is properly grounded. Be sure to allow the required space around the machine for servicing

and proper ventilation.

Store spare supplies such as drum cartridges and TD cartridges in a dark place without removing from the package before use.

If they are exposed to direct sunlight, poor print quality may result. Do not touch the surface (green portion) of the drum cartridge. Doing so will damage the surface of the cartridge, causing poor print

quality.

3. Checking packed components and accessories

Open the carton and check if the following components and accessories are included.

Operation manual

Software CD-ROM

(10cm)

8" (20cm)

8"(20cm)

Drum cartridge

(installed in machine)

(10cm)

TD cartridge

AL-1651CS UNPACKING AND INSTALLATION 5 - 1

4. Unpacking

Be sure to hold the handles on both sides of the machine to unpack the machine and carry it to the installation location.

5. Removing protective packing materials

1) Remove all pieces of tape shown in the illustration below and then open the RSPF and remove the protective materials. Take out the bag containing the TD cartridge.

2) Remove the CAUTION tape from the front cover and remove the two protective pins from the fusing machine by pulling the strings upward one at a time.

Protective pins

CAUTION tape

3) Press gently on both sides of the front cover to open the cover.

4) Remove the TD cartridge from the bag. Remove the protective paper. Hold the cartridge on both sides and shake it horizontally four or five times. Hold the tab of the protective cover and pull the tab to your side to remove the cover.

2) Release the scan head locking switch.

Grasp here and turn in the direction of the arrow.

Lock Unlock

6. Installing the TD cartridge

1) Open the bypass tray, and then open the side cover.

4 or 5 times

5) While pushing the lock release button, gently insert the TD cartridge until it locks into place.

Lock release button

6) Close the front cover and then the side cover by pressing the round projections near the side cover open button.

Note: When closing the covers, be sure to close the front cover

securely and then close the side cover. If the covers are closed in the wrong order, the covers may be damaged.

7) Ensure that the power switch of the machine is in the OFF position. Plug the other end of the power cord into the nearest outlet.

AL-1651CS UNPACKING AND INSTALLATION 5 - 2

7. Loading the paper tray

Note: Make sure that the paper is not torn, is free of dust, and has no

wrinkles or curled edges.

1) Raise the handle of the paper tray and pull the paper tray out until it stops.

2) Remove the pressure plate lock. Rotate the pressure plate lock in the direction of the arrow to remove it while pressing down on the pressure plate of the paper tray.

6) Gently push the paper tray back into the machine. Note:

• If you loaded a different size of paper than was loaded previously in the tray.

• When not using the machine for an extended period, remove all paper from the paper tray and store it in a dry place. If paper is left in the machine for an extended period, the paper will absorb moisture from the air, resulting in paper jams.

3) Store the pressure plate lock which has been removed in step 2. To store the pressure plate lock, rotate the lock to secure it as shown below.

Pressure plate lock

4) Squeeze the lock lever of the front guide and slide the front guide to match the width of the paper, and move the left guide to the appropriate slot as marked on the tray.

Left guide

• The front guide is a slide-type guide. Grasp the locking knob on

the guide and slide the guide to the indicator line of the paper to be loaded.

• The left guide is an insert-type guide. Remove it and then insert it

at the indicator line of the paper to be loaded.

5) Fan the paper and insert it into the tray. Make sure that the edges go under the corner hooks.

Note:

• Do not load paper above the maximum height line ( ).

Exceeding the line will cause a paper misfeed.

• If the paper is not fanned, double-feeds or misfeeds may occur.

• Make sure the stack of paper is straight before loading it. When add-

ing paper, take the remaining paper out and combine it into a single stack with the new paper.

• Make sure that all the paper in the stack is the same size and type.

• When loading paper, ensure that there is no space between the

paper and the guide, and make sure that the guide is not set too narrow and causes the paper to bend. Incorrect loading will cause the paper to skew or misfeed.

Front guide

8. Power to copier

1) Ensure that the power switch of the copier is in the OFF position. Insert the attached power cord into the power cord socket at the rear of the copier.

2) Plug the other end of the power cord into the nearest outlet.

9. Software for AL-1651CS

The CD-ROM that accompanies the machine contains the following software:

MFP driver

Printer driver

The printer driver enables you to use the printer function of the machine.

The printer driver includes the Print Status Window. This is a utility that monitors the machine and informs you of the printing status, the name of the document currently being printed, and error messages.

Please note that the Print Status Window does not operate when the machine is used as a network printer.

Scanner driver (USB only)

The scanner driver allows you to use the scanning function of the machine with TWAIN-compliant and WIA-compliant applications.

Sharpdesk (USB only)

Sharpdesk is an integrated software environment that makes it easy to manage documents and image files, and launch applications.

Button Manager (USB only)

Button Manager allows you to use the scanner menus on the machine to scan a document.

Note: The scanning feature can only be used with computers that are

running Windows 98/Me/2000/XP and are connected to the machine by a USB cable. If you are running Windows 95/NT 4.0 or are connected to the machine by a LAN connection, only the printer function can be used.

AL-1651CS UNPACKING AND INSTALLATION 5 - 3

A. Before installation

(1) Hardware and software requirements

Check the following hardware and software requirements in order to install the software.

Computer type IBM PC/AT or compatible computer equipped with a

USB2.0*

Operating

3 *4

system*

Windows 95, Windows 98, Windows Me, Windows NT Workstation 4.0 (ServicePack 5 or later)* Windows 2000 Professional* Professional*

/1.1*2 or 10Base-T LAN port

, Windows XP Home Edition*5

, Windows XP

Display 800 x 600 dots (SVGA) display with 256 colors (or

better)

Hard disk free

150MB or more

space Other hardware

requirements

The machine's USB port will transfer data at the speed specified by

An environment on which any of the operating systems listed above can fully operate

the USB 2.0 (Hi-Speed) only if the Microsoft USB 2.0 driver is preinstalled in the computer, or if the USB 2.0 driver for Windows 2000 Professional/XP that Microsoft provides through its "Windows Update" is installed.

Compatible with Windows 98, Windows Me, Windows 2000 Profes-

sional, Windows XP Professional or Windows XP Home Edition preinstalled model standardly equipped with a USB port.

Printing is not available in MS-DOS mode.

The machine does not support printing from a Macintosh environ-

ment.

Administrator's rights are required to install the software using the

installer.

(2) Installation environment and usable software

The following table shows the drivers and software that can be installed for each version of Windows and port connection method.

MFP Driver

Cable Operating system

Windows 98/Me/

USB

2000/XP

Windows 95/98/Me/

LAN

NT 4.0/2000/XP

Printer

driver

Available

Scanner

driver

*1 Windows 98/Me does not support USB 2.0. A USB 2.0 connection

can be used in Windows 98/Me, however, the performance will be the same as USB 1.1. The print speed based on USB 2.0 specifications can only be attained if your computer is running Windows 2000/XP, you are using a cable that supports USB 2.0 (USB 1.1 or USB 2.0 certified), and the cable is connected to a USB 2.0 port on your computer. If the connection is made through a hub, the hub must support USB 2.0.

The printer driver that is installed will vary depending on the type of

connection between the machine and your computer.

Button

Manager

Sharpdesk

Available

Not Available

B. Installing the software

Note:

• If you need to use a different connection method after installing the software using a USB or network connection, you must first uninstall the software and then install it using the new connection method.

• In the following explanations it is assumed that the mouse is configured for right hand operation.

• The scanner feature only works when using a USB cable.

• If an error message appears, follow the instructions on the screen to

solve the problem. After the problem is solved, the installation procedure will continue. Depending on the problem, you may have to click the "Cancel" button to exit the installer. In this case, reinstall the software from the beginning after solving the problem.

• When installing Sharpdesk, a minimal version of Internet Explorer

5.01 will be installed on your computer if your computer does not currently have Internet Explorer version 4.01 or later.

(1) Using the machine with a USB connection

1) The USB cable must not be connected to the machine. Make sure that the cable is not connected before proceeding.

If the cable is connected, a Plug and Play window will appear. If this happens, click the "Cancel" button to close the window and disconnect the cable.

Note: The cable will be connected in step 15.

2) Insert the CD-ROM into your computer's CD-ROM drive.

3) Click the "start" button, click "My Computer", and then double-click the CD-ROM icon.

In Windows 98/Me/2000, double-click "My Computer", and then double-click the CD-ROM icon.

4) Double-click the "setup" icon.

Note: If the language selection screen appears after you double click

the "setup" icon, select the language that you wish to use and click the "Next" button. (Normally the correct language is selected automatically.)

5) The "SOFTWARE LICENCE" window will appear. Make sure that you understand the contents of the software licence, and then click the "Yes" button.

6) Read the "Readme First" in the "Welcome" window and then click the "Next" button.

7) To install all of the software, click the "Standard" button. To install particular packages, click the "Custom" button. If you selected "Custom", go to step 9.

8) Read the message in the "Welcome" window and then click the "Next" button.

If you selected "Standard" in step 7, installation will begin. Go to step 14.

9) If you clicked the "Custom" button, select the checkboxes of the software packages to be installed and then click the "Next" button.

Click the "Display README" button to show information on packages that are selected.

AL-1651CS UNPACKING AND INSTALLATION 5 - 4

10) Check the packages on the screen, and then click the "Start" button.

The software packages to be installed will be displayed on the screen. If an incorrect package is displayed, click the "Back" button and select the correct packages.

11) The files required for installation of the MFP driver are copied (if "MFP Driver" was selected).

Follow the on-screen instructions.

Caution: If you are running Windows 2000/XP and a warning message

appears regarding the Windows logo test or digital signature, be sure to click "Continue Anyway" or "Yes".

When "The installation of the SHARP software is complete" appears, click the "OK" button.

12) Begin the installation of Button Manager (if "Button Manager" was selected).

Follow the on-screen instructions. Click the "Finish" button when the message informs you that setup

is successful. The Sharpdesk installer will start.

13) Begin the installation of Sharpdesk (if "Sharpdesk" was selected). Follow the on-screen instructions. Click the "Finish" button when the message informs you that

Setup is complete.

Caution: In Windows 98/Me/2000, if the following screen appears,

click the "Skip" button or the "Continue" button as appropriate to continue the Sharpdesk installation.

If "Skip" is selected, the Sharpdesk installation will continue without installing Sharpdesk Imaging.

If "Continue" is selected, Sharpdesk Imaging will be installed. If Imaging for Windows is installed on your computer, Sharpdesk

Imaging will overwrite Imaging for Windows.

14) When the "Finish" screen appears, click the "Close" button. Caution: If you are running Windows 2000/XP and a warning message

appears regarding the Windows logo test or digital signature, be sure to click "Continue Anyway" or "Yes".

A message will appear instructing you to connect the machine to your computer. Click the OK button.

Note:

• If this is a "Standard" installation, the "Finish" screen will appear after several minutes.

• After the installation, a message prompting you to restart your computer may appear. In this case, click the "Yes" button to restart your computer.

15) Make sure that the power of the machine is turned on, and then

connect the USB cable. Windows will detect the machine and a Plug and Play screen will

appear.

Caution: If the following message appears on your computer screen,

close it.

A window regarding "HI-SPEED USB Device" will then appear. Close the window.

This message appears when the machine's USB 2.0 mode is not set to "HI-SPEED". For information on switching the USB

2.0 mode.

16) Begin installation of the scanner driver.

"SHARP AL-XXXXCS" will appear in the "Found New Hardware Wizard" dialog box. Select "Install the software automatically (Recommended)" and click the "Next" button. Follow the onscreen instructions.

Caution: If you are running Windows 2000/XP and a warning message

appears regarding the Windows logo test or digital signature, be sure to click "Continue Anyway" or "Yes".

Note: A "USB 2.0 Composite Device" installation window may appear

prior to this procedure. In this case, follow the instructions in the window to install the USB 2.0 Composite Device.

17) Begin installation of the printer driver.

"SHARP AL-XXXXCS" will appear in the "Found New Hardware Wizard" dialog box. Select "Install the software automatically (Recommended)" and click the "Next" button. Follow the onscreen instructions.

Caution: If you are running Windows 2000/XP and a warning message

appears regarding the Windows logo test or digital signature, be sure to click "Continue Anyway" or "Yes".

18) Follow the instructions in the Plug and Play screen that appears in

your version of Windows to begin the installation.

This completes the installation of the software.

• If you installed Button Manager, set up Button Manager as explained in "SETTING UP BUTTON MANAGER".

(2) Connecting a USB cable

Follow the procedure below to connect the machine to your computer. A USB cable for connecting the machine to your computer is not

included with the machine. Please purchase the appropriate cable for your computer.

Caution:

• USB is available with a PC/AT compatible computer that was originally equipped with USB and had Windows 98, Windows Me, Windows 2000 Professional, Windows XP Professional or Windows XP Home Edition preinstalled.

• Do not connect the USB cable before installing the MFP driver. The USB cable should be connected during installation of the MFP driver.

AL-1651CS UNPACKING AND INSTALLATION 5 - 5

Note:

• If the machine will be connected using a USB 2.0 port of your computer, please purchase a USB cable that supports USB 2.0.

• The machine's USB port will transfer data at the speed specified by the USB 2.0 (Hi-Speed) only if the Microsoft USB 2.0 driver is preinstalled in the computer, or if the USB 2.0 driver for Windows 2000 Professional/XP that Microsoft provides through its "Windows Update" Web page is installed.

• To obtain the fastest USB 2.0 data transfer speed, "USB2.0 MODE SWITCH" in the machine's user programs must be set to "HISPEED". For more information, see "USER PROGRAMS".

• Use the machine's "HI-SPEED" mode only when using a computer that is running Windows 2000/XP.

• Even when the Microsoft USB 2.0 driver is used, it may not be possible to obtain full USB 2.0 speed if a PC card supporting USB 2.0 is used. To obtain the latest driver (which may enable a higher speed), contact the manufacturer of your PC card.

• Connection is also possible using a USB 1.1 port on your computer. However, the specifications will be USB 1.1 specifications (FullSpeed).

1) Insert the cable into the USB port on the machine.

6) The "SOFTWARE LICENCE" window will appear. Make sure that you understand the contents of the software licence, and then click the "Yes" button.

7) Read the "Readme First" in the "Welcome" window and then click the "Next" button.

Note: To set the IP address of the machine, follow the steps below. If

the machine is already connected to the network and its IP address has been set, go to "LPR (TCP/IP) direct printing".

Set the IP Address

This setting is only required once when using the machine on a network.

8) Click the "Set the IP Address" button.

2) Insert the other end of the cable into your computer's USB port.

(3) Using the machine as a network printer

Note:

• Interface cables for connecting the machine to your computer are not included with the machine. Please purchase the appropriate cable for your computer.

• If you intend to use the machine as a scanner, it must be connected to your computer with a USB interface cable. The scanner function cannot be used if the machine is connected with a LAN cable.

• To install the software using a network connection in Windows 95, Internet Explorer version 4.01 or later must be installed on your computer. If this is not installed, double-click "My Computer" and then double-click the CD-ROM icon. Double-click the "le501" folder, the "EN" folder, and then "ie5setup.exe".

1) Insert the LAN cable into the LAN port on the machine.

Use a network cable that is shielded.

2) Turn on the machine.

3) Insert the CD-ROM into your computer's CD-ROM drive.

4) Click the "start" button, click "My Computer", and then double-click

the CD-ROM icon. In Windows 95/98/Me/NT 4.0/2000, double-click "My Computer",

and then double-click the CD-ROM icon.

5) Double-click the "setup" icon.

Note: If the language selection screen appears after you double click

the "setup" icon, select the language that you wish to use and click the "Next" button. (Normally the correct language is selected automatically.)

9) The printer or printers connected to the network will be detected. Click the printer to be configured (the machine) and click the "Next" button.

Note:

• The "Ethernet Address" is indicated on the left side of the machine

near the LAN port.

• If the machine is used on a different network after the IP address is

set, the machine will not be recognized. Enter the Ethernet Address and click the "Initialize" button to initialize the IP address. Follow the on-screen instructions to click the "OK" button and then the "Search" button.

AL-1651CS UNPACKING AND INSTALLATION 5 - 6

10) Enter the IP address, subnet mask, and default gateway. The settings in the above window are examples. Be sure to ask your network administrator for the correct IP

address, subnet mask, and default gateway to be entered.

Note: When "Get IP Address Automatically" is selected, the IP

address may at times change automatically. This will prevent printing. In this event, select "Assign IP Address" and enter the IP address.

11) Click the "Next" button.

12) Click the "Yes" button. Go to step 11.

10) Select "LPR (TCP/IP) direct printing" and click the "Next" button.

11) The printer or printers connected to the network will be detected. Click the printer to be configured (the machine) and click the "Next" button.

LPR (TCP/IP) direct printing

After step 1-7.

8) Click the "Printer Driver" button. If you have not set the IP Address, click the "Set the IP Address"

button in first and go to step 8 on "Connecting a USB cable".

Note: If the machine's IP address cannot be found, make sure the

machine is powered on, make sure the network cable is connected correctly, and then click the "Search" button.

12) In the window for setting the destination print port name, make sure that ":lp" appears at the end of the IP address and click the "Next" button.

Note: Any name can be entered in "Printer Port Name" (maximum of

38 characters).

13) A window appears to let you check your entries. Make sure that the entries are correct and then click the "Finish" button.

If any of the entries are incorrect, click the "Back" button to return to the appropriate window and correct the entry.

9) Read the message in the "Welcome" window and then click the "Next" button.

AL-1651CS UNPACKING AND INSTALLATION 5 - 7

14) When the model selection window appears, select the model

name of your machine and click the "Next" button. For the model name of your machine, see the operation panel on

the machine.

Note: A Welcome window may appear before this step. Read the

message in the "Welcome" window and then click the "Next" button.

15) Select whether or not you wish the printer to be your default

printer and click the "Next" button.

Caution: If you are running Windows 2000/XP and a warning message

appears regarding the Windows logo test or digital signature, be sure to click "Continue Anyway" or "Yes".

16) When "This installation of the SHARP software is complete"

appears, click the "OK" button.

17) When the "Finish" screen appears, click the "Close" button.

Note: After the installation, a message prompting you to restart your

computer may appear. In this case, click the "Yes" button to restart your computer.

This completes the installation of the software.

(4) Sharing the printer using windows networking

If the machine will be used as a shared printer on a network, follow these steps to install the printer driver in the client computer.

Note: To configure the appropriate settings in the print server, see the

operation manual or help file of your operating system.

1) Insert the CD-ROM into your computer's CD-ROM drive.

2) Click the "start" button, click "My Computer", and then double-click the CD-ROM icon.

In Windows 95/98/Me/NT 4.0/2000, double-click "My Computer", and then double-click the CD-ROM icon.

3) Double-click the "setup" icon.

Note: If the language selection screen appears after you double click

the "setup" icon, select the language that you wish to use and click the "Next" button. (Normally the correct language is selected automatically.)

4) The "SOFTWARE LICENCE" window will appear. Make sure that you understand the contents of the software licence, and then click the "Yes" button.

5) Click the "Printer Driver" button.

6) Read the message in the "Welcome" window and then click the "Next" button.

7) Select "Shared Printer" and click the "Next" button.

8) For the port to be used, select the machine set as a shared printer, and click the "Next" button.

You can also click the "Add Network Port" button and select the printer to be shared (the machine) by browsing the network in the window that appears.

Note: If the shared printer does not appear in the list, check the

settings in the printer server.

9) When the model selection window appears, select model name of your machine and click the "Next" button.

For the model name of your machine, see the operation panel on the machine.

10) Follow the on-screen instructions.

11) When the "Finish" screen appears, click the "Close" button.

Note: After the installation, a message prompting you to restart your

computer may appear. In this case, click the "Yes" button to restart your computer.

This completes the installation of the software.

C. Setting up button manager

Button Manager is a software program that works with the scanner driver to enable scanning from the machine.

To scan using the machine, Button Manager must be linked with the scan menu on the machine. Follow the steps below to link Button Manager to scanner events.

(1) Windows XP

1) Click the "start" button, click "Control Panel", click "Printers and Other Hardware", and then click "Scanners and Cameras".

2) Click the "SHARP AL-XXXXCS" icon and select "Properties" from the "File" menu.

3) In the "Properties" screen, click the "Events" tab.

AL-1651CS UNPACKING AND INSTALLATION 5 - 8

4) Select "SC1:" from the "Select an event" pull-down menu.

4) In the "Properties" screen, click the "Events" tab.

5) Select "SC1:" from the "Scanner events" pull-down menu.

5) Select "Start this program" and then select "Sharp Button Manager B" from the pull-down menu.

6) Click the "Apply" button.

7) Repeat Steps 4 through 6 to link Button Manager to "SC2:" through "SC6:".

Select "SC2:" from the "Select an event" pull-down menu. Select "Start this program", select "Sharp Button Manager B" from the pulldown menu, and then click the "Apply" button. Do the same for each ScanMenu through "SC6:".

When the settings have been completed, click the "OK" button to close the screen.

Button Manager is now linked to the scan menu (1 through 6). The scan settings for each of scan menu 1 through 6 can be changed

with the setting window of Button Manager. For the factory default settings of the scan menu. For the procedures

for configuring Button Manager settings, see "Button Manager Settings" in the Online Manual.

(2) Windows 98/Me/2000

1) click the "Start" button, select "Settings", and then click "Control Panel".

2) Double-click the "Scanners and Cameras" icon.

Note: If the "Scanners and Cameras" icon does not appear in

Windows Me, click "view all Control Panel options".

3) Select "SHARP AL-XXXXCS" and click the "Properties" button. In Windows Me, right click "SHARP AL-XXXXCS" and click "Prop-

erties" in the pop-up menu.

6) Select "Sharp Button Manager B" in "Send to this application".

Note: If other applications are shown, deselect the checkboxes for the

other applications and leave only the Button Manager checkbox selected.

7) Click the "Apply" button.

8) Repeat Steps 5 through 7 to link Button Manager to "SC2:" through "SC6:".

Select "SC2:" from the "Scanner events" pull-down menu. Select "Sharp Button Manager B" in "Send to this application" and click the "Apply" button. Do the same for each ScanMenu through "SC6:".

When the settings have been completed, click the "OK" button to close the screen.

Button Manager is now linked to the scan menu (1 through 6). The scan settings for each of scan menus 1 through 6 can be changed

with the setting window of Button Manager. For the factory default settings of the scan menu. For the procedures

for configuring Button Manager settings, see "Button Manager Settings" in the Online Manual.

AL-1651CS UNPACKING AND INSTALLATION 5 - 9

10. Interface

A. USB

Connector

4-pin ACON UBR23-4K2200 Type-B connector

Cable

Shielded twisted pair cable (2 m (6 feet) Max.: high-speed transmission equivalent)

Pin configuration

The pin numbers and signal names are listed in the following table.

Pin No. Signal name

1+5V 2-DATA 3+DATA 4GND

B. RJ45

RJ-45 connector pin arrangement

Pin No. Signal name LAN adapter RJ-45 connector

1 TD+ Send output + 2TD– Send output 3 RD + Receive input + 6RD– Receive input -

4, 5, 7, 8 Not used. Not used.

11. Moving

Moving instructions

When moving the unit, follow the procedure below. Note: When moving this unit, be sure to remove the TD cartridge in

advance.

1) Turn the power switch off and remove the power cord from the outlet.

2) Open the side cover and front cover, in that order. Remove the TD cartridge and close the front cover and side cover, in that order.

To open and close the side cover and front cover, and to remove the TD cartridge.

3) Raise the handle of the paper tray and pull the paper tray out until it stops.

4) Push the center of the pressure plate down until it locks in place and lock the plate using the pressure plate lock which has been stored in the front of the paper tray.

5) Push the paper tray back into the unit.

6) Lock the scan head locking switch.

Note: When shipping the unit, the scan head locking switch must be

locked to prevent shipping damage.

7) Close the multi-bypass tray and the paper output tray extension, and attach the packing materials and tape which were removed during installation of the unit.

8) Pack the unit into the carton.

AL-1651CS UNPACKING AND INSTALLATION 5 - 10

[6] COPY PROCESS

1. Functional diagram

An OPC drum is used for the photoconductor. (Structure of the OPC drum layers)

Main charger

OPC layer (20 microns thick) Pigment layer (0.2 to 0.3 microns thick) Aluminum drum

(Basic operation cycle)

Laser beam

MG roller

Main high voltage unit

Cleaning blade

Drum

Transfer unit

Resist roller

Semiconductor laser

Focus correction lens

Exposure

To face down tray

Saw tooth

Cleaning blade

Waste toner box

Paper release Fusing

Heat roller

Heater lamp

Charge

Drum

Cleaning

Separation

Electrode

AL-1651CS COPY PROCESS 6 - 1

Transfer

Transfer charger

Transfer high voltage unit

Developing

Cassette

paper feed

Synchronization

with drum

Toner

Developer

PS roller

Manual feed

Print process

Paper transport route

2. Outline of print process

This printer is a non-impact printer that uses a semiconductor laser and electrostatic print process. This printer uses an OPC (Organic Photo Conductor) for its photoconductive material. First, voltage from the main corona unit charges the drum surface and a latent image is formed on the drum surface using a laser beam. This latent image forms a visible image on the drum surface when toner is applied. The toner image is then transferred onto the print paper by the transfer corona and fused on the print paper in the fusing section with a combination of heat and pressure.

Step-1: Charge Step-2: Exposure * Latent image is formed on the drum. Step-3: Developing

Latent image formed on the drum is then changed into visible image with toner.

Step-4: Transfer

The visible image (toner image) on the drum is transferred onto the print paper.

Step-5: Cleaning

Residual toner on the drum surface is removed and collected by the cleaning blade.

Step-6: Optical discharge

Residual charge on the drum surface is removed, by semiconductor laser beam.

3. Actual print process

Step-1: DC charge

A uniform negative charge is applied over the OPC drum surface by the main charging unit. Stable potential is maintained by means of the Scorotron charger. Positive charges are generated in the aluminum layer.

Step-2: Exposure (laser beam, lens)

A Laser beam is generated from the semiconductor laser and controlled by the print pattern signal. The laser writes onto the OPC drum surface through the polygon mirrors and lens. The resistance of the OPC layer decreases for an area exposed by the laser beam (corresponding to the print pattern signal). The beam neutralizes the negative charge. An electrostatic latent image is formed on the drum surface.

Semiconductor laser

Exposure (semiconductor laser)

OPC layer

Pigment layer

Aluminum drum

Drum surface charge after the exposure

OPC layer

Pigment layer

Aluminum

Non-image area Image area

layer

About

DC5.5KV

( 580V/ 400V)

AL-1651CS COPY PROCESS 6 - 2

Step-3: Developing (DC bias)

A bias potential is applied to the MG roller in the two component magnetic brush developing method, and the toner is charged negative through friction with the carrier. Non-image area of the drum surface charged with negative potential repel the toner, whereas the laser exposed portions where no negative charges exist, attract the toner. As a result, a visible image appears on the drum surface.

:Carrier (Magnetized particle) :Toner (Charge negative by friction) (N) (S) Permanent magnet

(provided in three locations)

Step-4: Transfer

The visible image on the drum surface is transferred onto the print paper by applying a positive charge from the transfer corona to the backside of the print paper.

About DC 5.2kV

400V 8V

Toner is attracted over the shadowed area because of the developing bias.

MG roller

Step-5: Separation

Since the print paper is charged positively by the transfer corona, it is discharged by the separation corona. The separation corona is connected to ground.

Step-6: Cleaning

Toner remaining on the drum is removed and collected by the cleaning blade. It is transported to the waste toner collecting section in the cleaning unit by the waste toner transport roller.

AL-1651CS COPY PROCESS 6 - 3

Step-7: Optical discharge (Semiconductor laser)

Before the drum rotation is stopped, the semiconductor laser is radiated onto the drum to reduce the electrical resistance in the OPC layer and eliminate residual charge, providing a uniform state to the drum surface for the next page to be printed. When the electrical resistance is reduced, positive charges on the aluminum layer are moved and neutralized with negative charges on the OPC layer.

Semiconductor laser

Charge by the Scorotron charger

Function

The Scorotron charger functions to maintain uniform surface potential on the drum at all times, It control the surface potential regardless of the charge characteristics of the photoconductor.

Basic function

A screen grid is placed between the saw tooth and the photoconductor. A stable voltage is added to the screen grid to maintain the corona current on the photoconductor. As the photoconductor is charged by the saw tooth from the main corona unit, the surface potential increases. This increases the current flowing through the screen grid. When the photoconductor potential nears the grid potential, the current turns to flow to the grid so that the photoconductor potential can be maintained at a stable level.

Start

1) Because the grid potential is at a low level, the drum potential is at about -400V. (Carrier may not be attracted though the carrier is pulled towards the drum by the electrostatic force of -400V.

2) Developing bias (-400V) is applied when the photoconductor potential is switched from LOW to HIGH.

3) Once developing bias (-400V) is applied and the photo conductor potential rises to HIGH, toner will not be attracted to the drum.

Stop

The reverse sequence takes place. Retaining developing bias at an abnormal occurrence

Function

The developing bias will be lost if the power supply was removed during print process. In this event, the drum potential slightly abates and the carrier makes deposits on the drum because of strong static power. To prevent this, the machine incorporates a function to retain the developing bias for a certain period and decrease the voltage gradually against possible power loss.

Basic function

Normally, the developing bias voltage is retained for a certain time before the drum comes to a complete stop if the machine should stop before completing the normal print cycle. The developing bias can be added before resuming the operation after an abnormal interruption. Therefore, carrier will not make a deposit on the drum surface.

Process controlling

Function

The print pattern signal is converted into an invisible image by the semiconductor laser using negative to positive (reversible) developing method. Therefore, if the developing bias is added before the drum is charged, toner is attracted onto the drum. If the developing bias is not added when the drum is charged, the carrier is attracted to the drum because of the strong electrostatic force of the drum. To avoid this, the process is controlled by adjusting the drum potential and the grid potential of the Scorotron charger.

Basic function

Voltage added to the screen grid can be selected, high and low. To make it easily understood, the figure below shows voltage transition at the developer unit.

START STOP

Toner attract potential

Low

Print potential

Developing bias

High

Time

Drum potential

AL-1651CS COPY PROCESS 6 - 4

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