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AL-1556/1566  EXTERNAL VIEWS AND INTERNAL STRUCTURES  4 - 5

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

10

FAX-operation PWB

FAX operation input (AL-1566)

11

Modem PWB

FAX control (AL-1566)

1

5

9

2

8

6

7

3

4

10

11

AL-1556/1566  EXTERNAL VIEWS AND INTERNAL STRUCTURES  4 - 6

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.

1

4

3

5

18

15

6

7

8

9

10

11

12

14

13

16

17

2

AL-1556/1566  UNPACKING AND INSTALLATION  5 - 1

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 condi-
tion 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

• 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.

Be careful in handling the copier as follows to maintain the perfor-
mance 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.

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.

Open the carton and check if the following components and accesso-
ries are included.

8"(20cm)

8" (20cm)

4"

(10cm)

4"

(10cm)

Drum cartridge 

(installed in machine)

Software CD-ROM

Telephone line cord
(AL-1566)

• Operation manual
• Operation manual 

(For Facsimile)
(AL-1566)

TD cartridge

AC cord

AL-1556/1566  UNPACKING AND INSTALLATION  5 - 2

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

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) Release the scan head locking switch.

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

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.

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.

5) While pushing the lock release button, gently insert the TD car-

tridge until it locks into place.

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.

Grasp here and turn in 
the direction of the arrow.

CAUTION tape

Protective pins

4 or 5 times

Lock release button