SHARP AR153E, AR122E, AR152E, AR157E Service Manual

(AR-157E)

SERVICE MANUAL

CODE : 00ZAR157E/A1E

DIGITAL LASER COPIER/ PRINTER

AR-122E AR-152E AR-153E

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] SIMULATION, TROUBLE CODES . . . . . . . . . . . . . . . . . . . . . . . 10 - 1

[11] MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 1

AR-157E

[12] USER PROGRAMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 - 1

[13] ELECTRICAL SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 - 1

[14] CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 : 0.17mW

± 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.

Caution label on the unit

The label ( ) in the fusing area of the unit indicates the following: : Caution, risk of danger : Caution, hot surface

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

CONTENTS

[1] GENERAL

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

[2] SPECIFICATIONS

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

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

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

4. RSPF. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

[3] CONSUMABLE PARTS

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

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

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

4. TD cartridge replacement . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

[4] EXTERNAL VIEWS AND INTERNAL STRUCTURES

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

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

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

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

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

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

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

[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. Developer unit installation . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

7. Toner cartridge installation . . . . . . . . . . . . . . . . . . . . . . . . 5-3

8. Loading copy paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

9. Power to copier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

10. Moving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

[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

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

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

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

6. SPF section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7

7. D-D (Duplex to Duplex) mode paper/

document transport (Duplex model) . . . . . . . . . . . . . . . . . 7-8

[8] DISASSEMBLY AND ASSEMBLY

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

2. Operation panel section . . . . . . . . . . . . . . . . . . . . . . . . . . .8-4

3. Optical section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-5

4. Fusing section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-7

5. Tray paper feed/transport section . . . . . . . . . . . . . . . . . . . .8-9

6. Manual paper feed section . . . . . . . . . . . . . . . . . . . . . . . .8-15

7. Rear frame section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-19

8. Power section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-20

9. 2nd cassette section . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-20

10. Duplex motor section (RSPF model only) . . . . . . . . . . . . .8-22

11. Reverse roller section (RSPF model only) . . . . . . . . . . . .8-23

12. RSPF section (RSPF model only) . . . . . . . . . . . . . . . . . . .8-23

[9] ADJUSTMENTS

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

2. Copy density adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . .9-4

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

4. Duplex adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-6

[10] SIMULATION, TROUBLE CODES

1. Entering the simulation mode . . . . . . . . . . . . . . . . . . . . . .10-1

2. List of simulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-2

3. Contents of simulations. . . . . . . . . . . . . . . . . . . . . . . . . . .10-3

4. Trouble codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-17

[11] MAINTENANCE

1. Maintenance table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-1

2. Maintenance display system . . . . . . . . . . . . . . . . . . . . . . .11-1

[12] USER PROGRAMS

1. Functions that can be set with user programs. . . . . . . . . .12-1

2. Change the setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-1

3. Density level adjustment . . . . . . . . . . . . . . . . . . . . . . . . . .12-2

4. Toner save mode setup and cancel . . . . . . . . . . . . . . . . .12-2

[13] ELECTRICAL SECTION

1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13-1

2. Circuit descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13-3

[14] CIRCUIT DIAGRAM

1. MCU PWB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-1

2. OPERATION PWB . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-10

3. POWER SUPPLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-11

4. NOISE FILTER CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . .14-13

5. ACTUAL WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . .14-15

[1] GENERAL

1. Major functions

Configurations

Item

CPM SB/MB 2 Tray SPF R-SPF

Model AR-122E 12CPM SB Opt AR-152E 15CPM SB Opt AR-153E 15CPM MB Opt Opt Opt AR-157E 15CPM MB Opt ∗2Opt ∗2 16M

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. PCL printer: PCL printer function with USB. SOPM: Scan Once Print Many function (Many copies are made by one scan.) Duplex: Auto duplex copy function Memory: Standard page memory FAX: FAX function.

Descriptions of table

: Standard provision : No function or no option available

Opt: Option

∗1: AL-12PKM ∗2: AR-PG2

Color

Scanner

GDI

printer

∗1Opt ∗18M ∗1Opt ∗18M

2Opt ∗28M

∗

PCL

printer

SOPM Duplex Memory FAX

(Options)

AR-SP5

AR-122E/152E/153E

AR-157E

AR-D16

AR-PG2AL-12PKM

AR-122E/152E/153E/157E GENERAL 1 - 1

[2] SPECIFICATIONS

1. Basic Specifications

Item Type Desktop Copy system Dry, electrostatic Segment (class) Digital personal copier Copier dimensions AR-122E 20.4"(W)X18.2"(D)X11.6"(H) (518mm(W)X462.5mm(D)X295.6mm(H))

AR-152E 20.4"(W)X18.2"(D)X11.6"(H) (518mm(W)X462.5mm(D)X295.6mm(H)) AR-153E 20.4"(W)X19.4"(D)X11.6"(H) (518mm(W)X492.5mm(D)X295.6mm(H)) AR-157E 20.4"(W)X19.4"(D)X18.3"(H) (518mm(W)X492.5mm(D)X465.4mm(H))

Weight (Approximately)

2. Operation specifications

Paper feed section

Paper exit section Exit way Face down

Originals Original set Center Registration (left edge)

Paper feed system

AB system Tray paper feed

Inch system Tray paper feed

AR-122E 35.3lbs.(17Kg) TD and drum cartridges included AR-152E 35.3lbs.(17Kg) AR-153E 35.3lbs.(17Kg) AR-157E 50.7lbs.(24Kg)

Section, item Details

AR-122E/152E 1 tray (250 sheet) + single bypass AR-153E 1 tray (250 sheet) + multi bypass (50 sheet) AR-157E 2 tray (500 sheet) + multi bypass (50 sheet) Paper size A4, B5, A5 (Landscape)

section

Multi bypass paper feed section

Single bypass paper feed section

section

Multi bypass paper feed section

Single bypass paper feed section

Capacity of output tray 100 sheets

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

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

Label, Envelop (Single copy) Remark User adjustment of paper guide available Paper size A4, B5, A5, B6, A6 (Landscape) Paper weight 52 - 128g/m Paper feed capacity 1 sheet Kinds Standard paper, specified paper, recycled paper, OHP,

Label, Postal card, Envelop, Post card (Including

double postal without fold line) Remark User adjustment of 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 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 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 14 - 34.5 lbs. Paper feed capacity 1 sheet Kinds Standard paper, specified paper, recycled paper, OHP,

Label, Envelop Remark User adjustment of paper guide available

(15 - 21 lbs.)

(14 - 34.5 lbs.)

AR-122E/152E/153E/157E SPECIFICATIONS 2 - 1

Section, item Details

Optical section Scanning

section

Scanning system 3 CCDs (RGB) sensor scanning by lighting white lamp CCD sensor Resolution 600 dpi Lighting lamp Type CCFL

Voltage 1100Vrms (Min) Power consumption 9.6W (Max)

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

Image forming Photoconductor type OPC (30ø)

Life 25k

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

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

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

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/230V Power consumption 800W

Electrical section Power source Voltage 100V, 110V, 120/127V, 230V, 240V

Frequency Common use for 50 and 60Hz

Power consumption Max. Less than 1000W

Average (during copying)

AR-122E 300 Wh/H *1) AR-152E 300 Wh/H *1) AR-153E 300 Wh/H *1)

AR-157E 310 Wh/H *1) Average (stand-by) 80Wh/H *1) Pre-heat mode 18Wh/H *1) Auto power shut-off mode 4.5Wh/H *1)

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

AR-122E/152E/153E/157E SPECIFICATIONS 2 - 2

3. Copy performance

Section, item Details AR-122E AR-152E AR-153E AR-157E

Copy magnification Fixed

Manual steps (manual, photo) 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.

magnification ratios

Zooming magnification ratios

Copy speed (CPM)

Image loss leading edge same size: 3.0mm or less (OC) / 4mm or less (SPF/R-SPF/Duplex)

Same size 12 15 15 15 Enlargement 12 15 15 15 Reduction 12 15 15 15 Same size 12 15 15 15 Enlargement 12 15 15 15 Reduction 12 15 15 15 Same size 12 12 12 12 Enlargement 12 12 12 12 Reduction 12 12 12 12 Same size 12 15 15 15 Enlargement 12 15 15 15 Reduction 12 15 15 15

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

3 Reduction + 2 Enlargement

(AB system : 25, 70, 86, 100, 141, 400%)

(Inch system : 25, 64, 78, 100, 129, 400%)

25 - 400%

(376 steps in 1% increments)

5 steps

A4 or Letter/100%/Auto Exposure

4.5mm or less (total of both sides)

Enlarge: 2mm or less (OC) / 3mm or less (SPF/R-SPF/Duplex)

Reduction (50%): 6.0mm or less (OC) / 8mm or less (SPF/R-SPF/

Duplex)

4. 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)(15CPM model) 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 15CPM

D to S 15CPM Original placement Face up Original weight 52 to 90g/m Mixed feeding(Paper size) Performance Degraded 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.)

)(14 to 23.9 lbs.)

AR-122E/152E/153E/157E SPECIFICATIONS 2 - 3

[3] CONSUMABLE PARTS

1. Supply system table

A. SEC governments

No. Name Content Life Product name Package Remark

1 Toner CA(Black) Toner

(Toner: Net Weight 210g) Polyethylene bag × 10

B. SEC/SECL/LAG

No. Name Content Life Product name Package Remark

1 Toner CA(Black) Toner

(Toner: Net Weight 210g) Polyethylene bag × 10

2 Developer Developer

(Developer: Net Weight 170g)

3 Drum kit Drum × 1 25K AR-152DR 10

Drum fixing plate × 1

Note: Printing of the master/individual cartons is made in 2 languages, English/French.

Packed together with the machine: DR 25K/Developer UN/Process UN

C. Europe subsidiaries/East Europe/SCA/SCNZ

No. Name Content Life Product name Package Remark

1 Toner CA(Black) Toner

(Toner: Net Weight 210g) Polyethylene bag × 10

2 Developer Developer

(Developer: Net Weight 170g)

3 Drum kit Drum × 1 25K AR-152DM 10

Drum fixing plate × 1

Note: Printing of the master/individual cartons is made in 4 languages, English/French/German/Spanish.

Packed together with the machine: DR 25K/Developer UN/Process UN

× 10 80K AR-152MT-J 1 ∗ Life setup is based on A4

6%.

MT=NT ∗10

× 10 80K AR-152MT 1 ∗ Life setup is based on A4

6%.

MT=NT ∗10

× 10 250K AR-152MD 1 MD=ND ∗10

× 10 80K AR-152LT 1 LT=T ∗10

× 10 250K AR-152LD 1 LD=DV ∗10

D. SMEF (Middle East, Africa) Israel/Russia/CIS/Taiwan/Philippines

No. Name Content Life Product name Package Remark

1 Toner CA(Black) Toner

(Toner: Net Weight 210g) Polyethylene bag × 10

2 Developer Developer

(Developer: Net Weight 170g)

3 Drum kit Drum × 1 25K AR-152DR 10

Drum fixing plate × 1

Note: Printing of the master/individual cartons is made in 4 languages, English/French/German/Spanish.

Packed together with the machine: DR 25K/Developer UN/Process UN

× 10 80K AR-152ET 1 ∗ Life setup is based on A4

6%.

ET=FT ∗10

× 10 250K AR-152CD 1 CD=SD ∗10

E. Asia (Subsidiary)

No. Name Content Life Product name Package Remark

1 Toner CA(Black) Toner

(Toner: Net Weight 210g) Polyethylene bag × 10

2 Developer Developer

(Developer: Net Weight 170g)

3 Drum kit Drum × 1 25K AR-152DR 10

Drum fixing plate × 1

Note: Printing of the master/individual cartons is made in 4 languages, English/French/German/Spanish.

Packed together with the machine: DR 25K/Developer UN/Process UN

× 10 80K AR-152CT 1 ∗ Life setup is based on A4

6%.

CT=ST ∗10

× 10 250K AR-152CD 1 CD=SD ∗10

AR-122E/152E/153E/157E CONSUMABLE PARTS 3 - 1

F. SRH Chinese language version

No. Name Content Life Product name Package Remark

1 Toner CA(Black) Toner (Toner: Net Weight 210g) × 10 80K AR-152CT-C 1 ∗ Life setup is based on A4

Polyethylene bag × 10

2 Developer Developer (Developer: Net

Weight 170g)

3 Drum kit Drum × 1 25K AR-152DR-C 10

Drum fixing plate × 1

Note: Printing of the master/individual cartons is made in 2 languages, English/Chinese.

Packed together with the machine: DR 25K/Developer UN/Process UN

× 10 250K AR-152CD-C 1 CDC=SDC ∗10

6%.

CTC=STC ∗10

2. Environmental

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

(1) Normal operating condition

Temperature: 20°C to 25 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%

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

Option Destination

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

A same pack G B same pack H

AP BQ

60%

15%

–25˚C30˚C40˚C

(4) Supply storage condition

Humidity (RH)

90%

20%

–5˚C45˚C

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

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.

AR-122E/152E/153E/157E CONSUMABLE PARTS 3 - 2

Division No. Ex production 1 Option 2 Same pack 3

Production control label attachment position

4. TD cartridge replacement

1) Open the front and side cabinets of the copier.

2) Keep holding Toner lover, and

3) Carefully pull out Toner unit from the copier.

4) Put Toner unit in a collection bag immediately after removing it from the copier

Production control label attachment position(*1)

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

China product.

Sub lot Production day Production month End digit of year Production place

Note: Never carry exposed Toner unit. Be sure to put it in the

collection bag.

AR-122E/152E/153E/157E CONSUMABLE PARTS 3 - 3

[4] EXTERNAL VIEWS AND INTERNAL STRUCTURES

1. Appearance

SPF/RSPF

Interface

1 Original cover 2 Side cover 3 Bypass tray 4 Bypass tray guides 5 Side cover open button 6 Front cover

7 Paper tray 8 Operation panel 9 Original table 10 Document feeder tray 11 SPF exit area *1 / RSPF exit area *2 12 Original guides 13 Feeding roller cover 14 USB interface 15 Parallel interface 16 Paper output tray 17 Paper output tray extension 18 Power switch 19 Handle 20 Power cord

*1 SPF only *2 RSPF only

9 8

6 7

Single bypass

16 17

18 19

2. Internal

1 Toner cartridge lock release button 2 Toner cartridge 3 Drum cartridge

4 Drum cartridge handle 5 Fusing unit release lever 6 Charger cleaner

7 Transfer charger

AR-122E/152E/153E/157E EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 1

3. Operation panel

10 11 12

1817161513

Inch system

(AR-122E)

(AR-157E)

1 Duplex Mode select key and indicator

(RSPF only)

3 Light and dark keys and exposure indicators

Use to adjust the MANUAL or PHOTO exposure level. Selected exposure level is shown by a lit indicator. Use to start and terminate user program setting.

5 SPF/RSPF indicator 6 SPF misfeed indicator 7 Copy ratio selector key and copy ratio indicators

Use to sequentially select preset reduction/enlargement copy ratios. Selected copy ratio is shown by a lit indicator.

9 Display

Displays the specified copy quantity, zoom copy ratio, user program code, and error code.

11 ON LINE key / indicator

Lights up when the machine is used as a printer and scanner. *2

13 Paper feed location indicators

Light up to show the selected paper feed station.

15 Zoom keys / indicator

Use to select any reduction or enlargement copy ratio from 25% to 400% in 1% increments.

17 Clear key

• Press to clear the display, or press during a copy run to terminate copying.

• Press and hold down during standby to display the total number of copies made to date.

2 Exposure mode selector key and indicators

Use to sequentially select the exposure modes: AUTO, MANUAL or PHOTO. Selected mode is shown by a lit indicator.

4 Alarm indicators

Developer replacement required indicator Misfeed indicator Toner cartridge replacement required indicator *1 Maintenance indicator

8 Copy ratio display (%) key

10 SCANNER key and indicator *2, *3

12 Power save indicator

Lights up when the copier is in a power save mode.

14 Tray select key

Use to select a paper feed station (paper tray or bypass tray).

16 Copy quantity keys

• Use to select the desired copy quantity (1 to 99).

• Use to make user program entries.

18 Print key and ready indicator

• Copying is possible when the indicator is on.

• Use to set a user program.

• Press to start copying

10 11 12

AR-122E/152E/153E/157E EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 2

*1. Toner Developer Cartridge Replacement

When toner density is lower than a specified level, the TONER DEVELOPER CARTRIDGE REPLACEMENT indicator lights up to warn the user. If the Toner Developer Cartridge is not replaced in that time, the Ready Lamp changes to blinking and then start to supply the toner after around 10 copies. (Cartridge replacement lamp continues to light.) If toner density is not back to specific level after two minutes, the READY indicator goes out and Toner Developer indicator starts blinking, and the copier stops.

*2. Indicators on the operation panel

The ON LINE indicator and the start ( ) indicator indicate the state of the printer or scanner.

Start indicator

On: Indicates the unit is ready for copying or scanning is

being performed.

Blinking: Indicates that an interrupt print job is in progress, or that

the unit is initializing (the cover has been opened and closed or the power turned off and on).

Off: Indicates copying or scanning is being performed or the

unit is in the auto power shut-off mode.

SCANNER indicator

ON LINE indicator

Start indicator

Power save indicator

ON LINE indicator

The ON LINE key is pressed and on line and off line are changed. On: Indicates the unit is ready for printing or scanning is

being performed. (On line) Blinking: Printing or data is being received from a computer. Off: Copying is being performed. (Off line)

Power save indicator

On: Indicates the unit is in a power save mode.

Scanner indicator

On: The SCANNER ( ) key has been pressed and the unit

is in scanner mode. Blinking: A scan job is being executed from the computer, or scan

data is stored in the unit's memory. Off: The unit is in the copy mode.

*3. Using the SCANNER key to begin scanning

This scanning method can only be used if the Button Manager has been installed using the installer. To scan using this method, you must first complete the settings in Button Manager in your computer. For more information on Button Manager, see the online manual or the help file for Button Manager.

Note:

• Scanning is not possible during a copy job.

• If the unit is used to begin a scan job during a print job using the parallel interface connection or the USB interface connection, the scan job will be stored and scanning will begin when the print job is completed.

• When scanning an original that has been placed in the SPF/ RSPF, only one original can be placed unless you are using Sharpdesk.

1) Press the SCANNER ( ) key.

The unit enters scan mode.

2) Place the original you wish to scan on the original table/SPF/

RSPF. For the procedure for placing the original, see "ORIGINAL

PLACEMENT".

3) Press the right copy quantity key to display the number of the

application that you wish to use for scanning. The application numbers are initially as follows.

The application numbers are initially as follows.

Application

number

Application launched

SC1 Sharpdesk (if installed) SC2 E-mail (your standard e-mail program in the

Windows OS you are using) SC3 Fax (if a fax program is installed) SC4 OCR (if an OCR program is installed) SC5 Microsoft Word (if installed) SC6 Any application set in Button Manager

4) Press the start ( ) key. The selected application launches and scanning begins.

AR-122E/152E/153E/157E EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 3

4. Motors and solenoids

213

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 feed solenoid 11 Paper feed solenoid CPFS2 Cassette Paper feed solenoid 2 12 SRRC Original resist roller solenoid 13 SPFS Original paper feed solenoid

AR-122E/152E/153E/157E EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 4

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 "L" at cassette insertion 5 Manual feed detection

switch 6 PPD1 sensor PPD1 Transmission sensor Paper transport detection 1 "L" at paper pass 7 Door switch DSW Micro-switch Door open/close detection

8 Drum reset switch DRST Micro-switch New drum detection switch Instantaneously "L" at insertion of new

9 SPF sensor SPID/

10 SPPD sensor SPPD Transmission sensor Paper transport detection "L" at paper pass 11 SDOD sensor SDOD Transmission sensor SPF open/close detection Book

12 2nd cassette DSW Micro-switch 2nd cassette door open detection 1 or 0V of 5V at door open 13 PPD3 sensor PPD3 Transmission sensor Paper transport detection 3 "L" at paper pass

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

MFD Transmission sensor Manual feed paper detection

Transmission sensor Paper entry detection

SD SW

(single only)

(safety switch for 24V)

Cover open/close detection

sensor

"L" at paper detection

1 or 0V of 24V at door open

drum "L" at paper pass

"L" at paper pass

AR-122E/152E/153E/157E EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 5

6. PWB unit

No. Name Function

1 Exposure lamp invertor 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 7 TCS PWB For toner sensor control 8 LSU PWB For laser control 9 I/F PWB Scanner/GDI Printer control (parallel I/F, USB I/F)

AR-122E/152E/153E/157E EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 6

7. Cross sectional view

15 16

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.

AR-122E/152E/153E/157E EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 7

[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.

8" (20cm)

8"(20cm)

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.

Power cord

Operation manual

Drum cartridge

(installed in unit)

(10cm)

4" (10cm)

AR-122E/152E/153E/157E UNPACKING AND INSTALLATION 5 - 1

4. Unpacking

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

5. Removing protective packing materials

1) Remove pieces of tape and protective cover. Then open the original cover and remove protective materials (a) and (b).

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

Protective pins

CAUTION tape

6. Developer unit installation

1) 2) 3) Open the side and front cabinets of the copier.

4) Remove the locking tape of the developer unit.

5) Remove the screw which is fixing the copier and Developer unit.

6) Remove Developer unit slowly from the copier.

AR-122E/152E/153E

AR-157E

2) Release the scan head locking switch.

Grasp here and turn in the direction of the arrow.

Lock Unlock

AR-122E/152E/153E

AR-157E

7) Remove the screw (1 pc).

8) Remove Upper developer unit.

3) Ensure that the bypass tray is open and then open the side cover by pressing the open button on the side cover.

AR-122E/152E/153E/157E UNPACKING AND INSTALLATION 5 - 2

9) Shake the aluminum bag to stir developer

10) Supply developer from the aluminum bag to the top of the MX roller evenly.

Note: Be careful not to splash developer outside Developer unit.

11) Attach Upper developer unit and fix it with a screw.

12) Rotate the MG roller gear to distribute developer evenly.

7. Toner cartridge installation

1) To prevent against uneven distribution of toner, hold Toner unit with both hands and shake it several times horizontally.

2) Hold the section of Toner unit shown in the figure below, remove the packing tape, and remove the cushion.

3) Pull out the cushion in the arrow direction.

Note: Never rotate the gear in the reverse direction. Note: When carrying Developer unit, do not tilt it extremely as

shown with the arrow in the figure below. (Prevention of splash of developer)

4) Insert Toner unit carefully into the copier.

5) Insert until the hook is engaged with the copier as shown in the figure below.

6) Pull out the shutter in the arrow direction.

13) Insert Developer unit carefully into the copier. Note: Quick insertion may result in splash of developer. Be sure to

insert carefully.

14) Confirm that Developer unit is completely inserted to the bottom of the machine, fix Developer unit and the machine with a screw.

15) Completion of Developer unit installation

AR-122E/152E/153E/157E UNPACKING AND INSTALLATION 5 - 3

Note: Do not hold and carry the shutter. Otherwise the shutter may

drop and Toner unit may drop.

7) Completion of Toner unit installation Close the front and side cabinets.

8. Loading copy paper

9. Power to copier

Note: This copier is equipped with two paper trays. Load copy paper

into the two paper trays.

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 the pressure plate of the paper tray.

3) Store the pressure plate lock that was removed in step 2 and the screw that was removed when unpacking the machine in the front of the paper tray. To store the pressure plate lock, rotate the lock to fix it on the relevant location.

4) Adjust the paper guides on the paper tray to the copy paper width and length. Squeeze the lever of paper guide (A) and slide the guide to match with the width of the paper. Move paper guide (B) to the appropriate slot as marked on the tray.

Paper guide (B)

Paper guide (A)

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.

10. 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 out-

let.

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, see "TD CARTRIDGE REPLACEMENT".

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. See "PREPARING THE UNIT FOR INSTALLATION".

8) Pack the unit into the carton. See "CHECKING PACKED COMPO-

NENTS AND ACCESSORIES".

5) Fan the copy paper and insert it into the tray. Make sure 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.

6) Gently push the paper tray back into the copier.

Note: After loading copy paper, to cancel the blinking "H" without

restarting copying, press the clear ( ) key. The "P" in the display will go out and the ready ( ) indicator will light up.

AR-122E/152E/153E/157E UNPACKING AND INSTALLATION 5 - 4

[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

AR-122E/152E/153E/157E COPY PROCESS 6 - 1

Cleaning

Separation

Electrode

Charge

Drum

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/ 390V)

AR-122E/152E/153E/157E 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.

AR-122E/152E/153E/157E 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

AR-122E/152E/153E/157E COPY PROCESS 6 - 4

[7] OPERATIONAL DESCRIPTIONS

1. Outline of operation

The outline of operation is described referring to the basic configuration.

(Basic configuration)

Scanner section

Operation

section

Printer section

CCD

MCU (Main control/image process section)

LSU (Laser unit) Laser diode, Polygon mirror lens

Laser beam

Process section

Cassette paper

feed section

Paper exit

Fusing section

Paper transport section

Manual paper

feed section

Printer/ Scanner I/F

Note: The scanner function is effective

USB or Parallel

only by USB connection.

(Outline of copy operation)

Setting conditions

1) Set copy conditions such as the copy quantity and the copy density with the operation section, and press the COPY button. The information on copy conditions is sent to the MCU.

Image scanning

2) When the COPY button is pressed, the scanner section starts scanning of images. The light from the copy lamp is reflected by the document and passed through the lens to the CCD.

Photo signal/Electric signal conversion

3) The image is converted into electrical signals by the CCD circuit and passed to the MCU.

Image process

4) The document image signal sent from the CCD circuit is processed under the revised conditions and sent to the LSU (laser unit) as print data.

Electric signal/Photo signal (laser beam) conversion

5) The LSU emits laser beams according to the print data. (Electrical signals are converted into photo signals.)

6) The laser beams are radiated through the polygon mirror and various lenses to the OPC drum.

Printing

7) Electrostatic latent images are formed on the OPC drum according to the laser beams, and the latent images are developed to be visible images(toner images).

8) Meanwhile the paper is fed to the image transfer section in synchronization with the image lead edge.

9) After the transfer of toner images onto the paper, the toner images are fused to the paper by the fusing section. The copied paper is discharged onto the exit tray.

(Outline of printer operation)

The print data sent from the PC are passed through the I/F and the MCU to the LSU. The procedures after that are the same as above 5) and later.

(Outline of scanner operation)

The scan data are passed through the MCU and the I/F to the PC according to the conditions requested by the PC or set by the operations with the operation panel.

AR-122E/152E/153E/157E OPERATIONAL DESCRIPTIONS 7 - 1

2. Scanner section

A. Scanner unit

The scanner unit in the digital copier scans images. It is composed of the optical unit and the drive unit. The optical unit

performs scanning in the main scan direction with the light receiving elements (color CCD). The drive unit performs scanning in the sub scanning direction by moving the optical unit.

B. Optical system

Two white lamps are used as the light source. Light radiated from the light source is applied to the document on the

document table. The reflected light from the document is reflected 5 times by No. 1 - No. 3 mirrors and passed through the reduction lens to form images on the light-receiving surface of 3-line CCD.

The light-receiving surface of the color CCD is provided with 3 line scanning sections for RGB. Separate images scanned in each color section are overlapped to complete color scanning. (When PC scanning)

The resolution is 600dpi. When copying, only the green component is used to print with the

printer. The color component for printing can be switched to red or blue by the

service simulation.

(Spectrum characteristics of the color CCD)

6.00E-01

5.00E-01

4.00E-01

3.00E-01

Intensity of UV

2.00E-01

1.00E-01

0.00E+00

Lamp : MBVM26W25W260NLH/G Lamp current : 5mA Temp. : 25 degree

0 200 400 600 800

MBVM26W25W260NLH/G

Wave length (nm)

(Spectrum characteristics of the lamp)

C. Drive system

The drive system is composed of the scanner motor, the pulley gear, the idle pulley, the idle gear, the belt 473, the belt 190, and the shaft.

The motor rotation is converted into reciprocated movements of the belt 473 through the idle gear, the pulley gear, the belt 190, and the idle pulley to drive the optical unit.

(Optical unit)

1 Table glass 2 Optical unit 3 Lens 4 Mirror 1 5 Mirror 2 6 Mirror 3 7 CCD PWB 8 Lamp 9 Reflector

34 6 285

1 Scanner motor 2 Pulley gear 3 Idle pulley 4 Belt 473 5 Belt 190 6 Optical unit 7 Shaft 8 Idle gear 9

AR-122E/152E/153E/157E OPERATIONAL DESCRIPTIONS 7 - 2

3. Laser unit

The image data sent from the MCU (image process circuit) is sent to the LSU (laser unit), where it is converted into laser beams.

A. Basic structure

The LSU unit is the writing section of the digital optical system. The semiconductor laser is used as the light source, and images are

formed on the OPC drum by the polygon mirror and fθ lens, etc. The laser beams are passed through the collimator lens, the cylindrical

lens, the polygon mirror, the fθ lens, and the mirror to form images on the OPC drum in the main scanning direction. The laser emitting PWB is provided with the APC (auto power control) in order to eliminate fluctuations in the laser power. The BD PWB works for measurement of the laser writing start point.

B. Laser beam path

No Component Function

1 Semiconductor laser Generates laser beams. 2 Collimator lens Converges laser beams in parallel. 3 Polygon mirror,

polygon motor

4 BD (Mirror, lens, PWB) Detects start timing of laser scanning. 5fθ lens Converges laser beams at a spot on the

Makes the laser scanning speeds at both ends of the drum same as each other.

Reflects laser beams at a constant rpm.

drum. Makes the laser scanning speeds at both

ends of the drum same as each other. (Refer to the figure below.)

C. Composition

Effective scanning width: 216mm (max.) Resolution: 600dpi Beam diameter: 75um in the main scanning direction, 80um in the sub

scanning direction Image surface power: 0.17 ±0.01mW (Laser wavelength 770 - 795nm) Polygon motor section: Brushless motor 20.787rpm

No. of mirror surfaces: 6 surfaces

4. Fuser section

a ≠ b ≠ c

ab c

d = e = f

def

f θ LENS

AR-122E/152E/153E/157E OPERATIONAL DESCRIPTIONS 7 - 3

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