SHARP AM900U, AM-900 Service Manual

AM-900U

SERVICE MANUAL

No. 00ZAM900U/SME

DIGITAL MULTIFUNCTIONAL SYSTEM

CONTENTS

CHAPTER 1. GENERAL DESCRIPTION

[1] Specifications ................................................. 1-1

[2] Operation panel.............................................. 1-2

[3] Transmittable documents ............................... 1-3

[4] Installation ...................................................... 1-4

CHAPTER 2. ADJUSTMENTS

[1] Adjustments ................................................... 2-1

[2] Diagnostics and service soft switches............ 2-7

[3] Troubleshooting ........................................... 2-30

[4] Error code table............................................ 2-31

CHAPTER 3. MECHANICAL DESCRIPTION

[1] Mechanical description................................... 3-1

[2] Disassembly and assembly procedures....... 3-18

MODEL

MODEL SELECTION CODE DESTINATION

AM-900 U U.S.A./Canada

[4] Circuit description of power supply

PWB ............................................................5-21

[5] Circuit description of CIS unit ......................5-22

[6] Circuit description of operation panel

PWB ............................................................5-23

[7] Data flow chart.............................................5-24

[8] Troubleshooting...........................................5-25

CHAPTER 6. CIRCUIT SCHEMATICS AND PARTS LAYOUT

[1] Control PWB circuit .......................................6-1

[2] LIU PWB circuit ...........................................6-14

[3] Power Supply PWB circuit...........................6-17

[4] High Voltage PWB circuit.............................6-19

[5] Operation Panel PWB circuit .......................6-22

AM-900

CHAPTER 4. DIADRAMS

[1] Block diagram ................................................ 4-1

[2] Wiring diagram ............................................... 4-2

[3] Point-to-point diagram.................................... 4-3

CHAPTER 5. CIRCUIT DESCRIPTION

[1] Circuit description........................................... 5-1

[2] Circuit description of control PWB.................. 5-1

[3] Circuit description of LIU PWB..................... 5-19

Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for
maintaining the safety and performance of the set.

SHARP CORPORATION

CHAPTER 7. OPERATION FLOWCHART

[1] Protocol ......................................................... 7-1

[2] Power on sequence.......................................7-2

CHAPTER 8. OTHER

[1] Service tools ..................................................8-1

[2] Rewriting version up the FLASH ROM ..........8-2

Parts Guide

This document has been published to be used
for after sales service only.
The contents are subject to change without notice.

AM-900U

CAUTION

This laser facsimile is a class 1 laser product that complies with 21CFR 1040.10 and 1040.11 of the CDRH or IEC60825-1 standard.
This means that this machine does not produce a 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 isn't a danger to the skin, but when an exact focusing of the laser beam is achieved on the eyes retina, there is
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 an individual part.

2) Do not look into the machine with the main switch turned on after removing the toner/developer unit 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 cover of Laser Printer Unit contains the safety interlock switch.

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

Laser Wave Length : 780 nm +15/-10 nm
Laser Pulse Times : 12.00 µs/7 mm
Laser Output Power : 0.4 mW ± 0.04 mW

Life of consumable

Section Part Estimated Life Replaced by

Toner cartridge Replacement cartridge

(AM-90ND)

Drum cartridge Replacement cartridge

(AM-90DR)

Paper feed Transfer roller (Refer to the P/G No. 3-19)

(NROLR2525XHZZ)

Fuser Fusing unit (Refer to the P/G No. 5-901)

(DUNTK273DXH01)

Paper transport Feed roller (Refer to the P/G No. 3-29)

(NROLR2333XHZZ)

Unit AM-900 5 years or 50,000 prints of early

3,000 prints
(at Letter/5% chart)
20,000 prints
(at Letter/5% chart)
50,000 prints Service Engineer

50,000 prints Service Engineer

Cleaning as needed ——————

either

.

User

User

——————

PRECAUTIONS FOR USING LEAD-FREE SOLDER

1. Employing lead-free solder

This model employs lead-free solder.

This is indicated by the "LF" symbol printed on the PWB and in the service manual.

The suffix letter indicates the alloy type of the solder.

Example:

Indicates lead-free solder of tin, silver and copper.

2. Using lead-free solder

When repairing a PWB with the "LF" symbol, only lead-free solder should be used. (Using normal tin/lead alloy solder may

result in cold soldered joints and damage to printed patterns.)

As the melting point of lead-free solder is approximately 40°C higher than tin/lead alloy solder, it is recommended that a

dedicated bit is used, and that the iron temperature is adjusted accordingly.

3. Soldering

As the melting point of lead-free solder (Sn-Ag-Cu) is higher and has poorer melting point (flow), to prevent damage to the

land of the PWB, extreme care should be taken not to leave the bit in contact with the PWB for an extended period of time.

Remove the bit as soon as a good flow is achieved.

The high content of tin in lead free solder will cause premature corrosion of the bit.

To reduce wear on the bit, reduce the temperature or turn off the iron when it is not required.

Leaving different types of solder on the bit will cause contamination of the different alloys, which will alter their

characteristics, making good soldering more difficult.

It will be necessary to clean and replace bits more often when using lead-free solder. To reduce bit wear, care should be

taken to clean the bit thoroughly after each use.

– i –

FAXAM-900UService ManualService ManualMarketE

CHAPTER 1. GENERAL DESCRIPTION

[1] Specifications

AM-900U

1. Print specifications

Printer type:
Toner cartridge yield*:
(continuous printing, 5%
page coverage, letter
paper)
Drum cartridge yield*:
(continuous printing, 5%
page coverage, letter
paper)
PC print speed:
Resolution:

* The yields may vary depending on coverage and operating condi­tions.

Laser
Initial starter cartridge (included with
machine): Approx. 1500 pages
Replacement cartridge AM-90ND:
Approx. 3000 pages
Initial starter cartridge (included with
machine): 20,000 pages (average)
Replacement cartridge AM-90DR:
20,000 pages (average)
12 ppm (pages per minute)
600 x 600 dpi (dots per inch)

2. Copy specifications

Copy speed:
Copy quality settings:
Copy resolution settings:
Enlargement/Reduction:
Contrast settings:
Halftone (grayscale):
Multiple copies:
Maximum copy size:

12 cpm (copies per minute)
Text, Photo, Text/Photo
300 dpi, 600dpi
25% to 400%
5 levels
256 levels
Max. 99 copies per original
Document glass: Letter (8.5 x 11 in.)
Auto document feeder: Legal (8.5 x 14
in.)

3. Fax specifications

Automatic dialing:
Modem speed:

Transmission time*:
Communication method:
Compression scheme:
Transmission method:
Memory size*:

Resolution:

Halftone (grayscale):
Reception modes:

* Based on Sharp Standard Chart at standard resolution, excluding
time for protocol signals (i.e., ITU-T phase C time only).

100 Speed Dial numbers
33,600 bps with automatic fallback to
lower speeds (lowest speed 2400 bps)
Approx. 3 seconds
Super G3, G3
MMR, MR, MH
Dither
2 MB (approx. 125 average letter
pages)

Horizontal: 203 lines/inch (8 dots/mm)
Verti cal: Standard: 98 lines/inch

(3.85 lines/mm)
Fine/Halftone: 196 lines/inch
(7.7 lines/mm)
Super fine: 391 lines/inch
(15.4 lines/mm)
256 levels
FAX ONLY, EXT. TEL

4. Scanning specifications

Scanner type:
Resolution:
Scan speed:

Compatibility:
Grayscale:
Color:

CIS (Contact Image Sensor)
300/600 x 300 dpi, 300/600 x 600 dpi
Black and white:
300/600 x 300 dpi: 6 sec/page
300/600 x 600 dpi: 12 sec/page
Color and grayscale:
300/600 x 300 dpi: 18 sec/page
300/600 x 600 dpi: 36 sec/page
TWAIN, WIA
256 levels
24-bit color

5. General specifications

Auto document feeder:

Computer connection:

Effective scanning width:
Effective printing width:
Display:
Paper tray capacity:
(letter-size plain paper)

Power requirements:
Operating temperature:
Humidity:
Power consumption:

Dimensions:

Weight:

Letter size: 20 sheets max. (20 lbs.)
Legal size: 1 sheet max. (20 lbs.)
USB 1.0/1.1 or 2.0 port (USB 1.0/1.1 or

2.0 cable must be purchased sepa­rately)

8.2” (208 mm) max.

8.2” (208 mm) max.
16-digit LCD display
250 sheets (20 lbs.)
(At room temperature and normal
humidity)
120 V AC, 60 Hz
50 - 86°F (10 - 30°
20 - 85% RH
Idle: 10 W
Maximum: 690 W
Width: 18.7" (475 mm)
Depth: 16.5" (420 mm)
Height: 14.6" (370 mm)
Approx. 28.0 lbs. (12.7 kg) (including
trays and toner and drum cartridges)

C)

As a part of our policy of continuous improvement, SHARP reserves the right to make design and specification changes for product improvement
without prior notice. The performance specifications figures indicated are nominal values of production units. There may be some deviations from
these values in individual units.

Trademark information

• Microsoft, Windows and Internet Explorer are trademarks of Microsoft Corporation in the
U.S.A. and other countries.

1 – 1

AM-900U

[2] Operation panel

1

2

3

4

6

7

8

9

COPY SCAN FA X

HELP

10511 12

1. Display

This displays messages and prompts to help you operate the
machine.

2. ZOOM key

Press this key to select an enlargement or reduction setting
when making a copy.

3. E-SORT key

Press this key when making multiple copies to have the
copies collated (sorted into sets with the pages ordered 1, 2,

3..., 1, 2, 3..., etc.).

4. QUALITY key

When making a copy, press this key to select the type of
original you are copying (TEXT, PHOTO). When sending a
fax, press this key to select a resolution setting.

5. Right/left arrow keys

When making a copy, press either of these keys after
selecting an enlargement/reduction setting with the ZOOM
key to increase or decrease the setting by 1%. When sending
a fax, press either of these keys to search through your auto­dial fax numbers.

6. MENU key

Press this key, followed by the left or right arrow key, to
access special functions and settings.

7. CONTRAST key

Press this key to select a contrast setting when making a copy
or sending a fax.

8. REDIAL key

Press this key followed by the Start key to automatically redial
the last number dialed.

9. Stop key

Press this key to cancel operations before they are completed.

10. COPY key

Press this key to select copy mode.

13

!

14

DUPLEX SCAN

15

QUALITY

E-SORT

ZOOM

PRINT STOP

16

CONTRAST

MENU

ZA

ENTER

17 18 19

11. SCAN key

Press this key to select scan mode.

12. HELP (FAX key and SCAN key)

Press the FAX key and SCAN key simultaneously to print the
HELP list, a brief guide to the operation of the machine.

13. FAX key

Press this key to select fax mode. When in fax mode, press
this key to select the Line Monitor function.

14. Alarm indicator

This blinks when the toner cartridge nears empty or the drum
cartridge is near or at the end of its life. This lights steadily
when the toner cartridge is empty, the machine is out of
paper, the print compartment cover is open, or when a paper
jam has occurred (a message will appear to indicate the
problem).

15. DUPLEX SCAN key

Press this key to copy or fax multiple two-sided pages.

16. PRINT STOP key

Press this key to cancel a print job sent to the machine from a
computer.

17. ENTER key

Press this key to enter or select a setting.

18. BROADCAST key

Press this key to send the same fax to multiple destinations.

19. SPEED key

Press this key to dial a fax number using an abbreviated 2­digit Speed Dial number.

20. Number keys

Use these keys to enter the number of copies, dial fax
numbers, and enter numbers and letters when storing auto­dial numbers.

21. Start key

Press this key when you are ready to begin copying, faxing,
or scanning. The key can also be pressed in the date and
time display of fax mode to show the percentage of memory
currently used.

REDIAL

BROADCAST

SPEED

20

21

1 – 2

[3] Transmittable documents

m

h

1. Document Sizes

Normal size Width 5.8” - 8.5”(148 - 216 mm)

Length 5.8” - 11”(148 - 279 mm)

(Max.)

AM-900U

5. Automatic Document Feeder Capacity

Number of pages that can be placed into the feeder at anytime is as
follows:

Normal size: max. ADF 20 pages

Special size: single sheet only (manual feed)
NOTE: • When you need to send or copy more pages than the feeder

limit, place additional pages in feeder when last page in feeder
is being scanned.

• Place additional pages carefully and gently in feeder.
If force is used, double-feeding or a document jam may result.

(Max.)

(Min.)

148mm

148mm 216mm

Use document carrier sheet for smaller documents.

• With special sizes, only one sheet can be fed into the machine at a
time. Insert next page into feeder as current page is being scanned.

LETTER
size

[Normal size]

279mm

216mm

[Special size]

600m

2. Paper Thickness & Weight

10 sheets 1 sheet(Manual)

Paper weight 21.5 lbs.

Paper thickness (ref.) 0.1 mm 0.1 mm ~ 0.18mm
Paper size LGL (216 mm x 355.6 mm)

Feeder capacity A4/LTR: 10 sheets max.

2)

(80 g/m

A4 (210 mm x 297 mm)
LTR (216 mm x 279 mm)

LGL : 1 sheet max.

14 lbs. ~ 42 lbs.

2

(52 g/m

~ 157g/m

2)

3. Document Types

• Normal paper

Documents handwritten in pencil (No. 2 lead or softer), fountain
pen, ball-point pen, or felt-tipped pen can be transmitted.

Documents of normal contrast duplicated by a copying machine
can also be transmitted.

• Diazo copy (blue print)

• Diazo copy documents of a normal contrast may be transmitted.

• Carbon copy

A carbon copy may be transmitted if its contrast is normal.

6. Readable Width & Length

The readable width and length of a document are slightly smaller than
the actual document size.

Note that characters or graphics outside the effective document scan­ning range will not be read.

• Readable width

8.2” (208mm), max

Readable widt

• Readable length

This is the length of the document sent minus 0.16” (4mm) from the
top and bottom edges.

0.16" (4mm)

Readable length

0.16" (4mm)

4. Cautions on Transmitting Documents

• Documents written in yellow, greenish yellow, or light blue ink can­not be transmitted.

• Ink, glue, and correcting fluid on documents must be dry before the
documents can be transmitted.

• All clips, staples and pins must be removed from documents before
transmission.

• Patched (taped) documents should be copied first on a copier and
then the copies used for transmission.

• All documents should be fanned before insertion into the feeder to
prevent possible double feeds.

1 – 3

AM-900U

[4] Installation

1. Site selection

Take the following points into consideration when selecting a site for
this model.

ENVIRONMENT

• The machine must be installed on a level surface.

• Keep the machine away from air conditioners, heaters, direct sun­light, and dust.

• Provide easy access to the front, back, and sides of the machine.
In particular, keep the area in front of the machine clear, or the orig­inal document may jam as it comes out after scanning.

• The temperature should be between 50 - 86°F (10 - 30°C).

• The humidity should be between 20% and 85% (without conden­sation).

ELECTRICITY

AC 120V, 60Hz, grounded AC (3-prong) outlet.

Caution!

• Connection to a power source other than that specified will cause
damage to the equipment and is not covered under the warranty.

• If your area experiences a high incidence of lightning or power
surges, we recommend that you install a surge protector for the
power and telephone lines. Surge protectors can be purchased at
most telephone specialty stores.

If the machine is moved from a cold to a warm place...

Condensation may form on the reading glass if machine is moved from
a cold to a warm place, this will prevent proper scanning of documents
for transmission. Turn on the power and wait approximately 2 hours
before using machine.

TELEPHONE JACK

A standard telephone jack must be located near the machine. This is
the telephone jack commonly used in most homes and offices.

• Plugging the fax machine into a jack which is not jack may result in
damage to the machine or your telephone system. If you do not
know what kind of jack you have, or need to have one installed,
contact the telephone company.

2) Releasing the scanner.

Before plugging in the power cord, pull the scanner release toward
you to release the scanner lock.

• Caution: Plugging in the power cord without releasing the scan-
ner lock may damage the machine.

• In the event that you need to move the machine, push the release
back in to lock the scanner before moving (push the release in after
you have unplugged the power cord).

3) Connecting the power cord.

Plug the power cord into a 120 V, 60 Hz, grounded AC (3-prong)
outlet.

• Caution: Make sure the scanner has been released as explained
on the previous page before plugging in the power cord.

• Do not plug the power cord into any other kind of outlet. This will
damage the machine and is not covered under the warranty.

2. Attaching the trays

1) Attach the document feeder tray.

Slide the output tray into the machine as shown. When it stops, lift
the end slightly and push in so that the tray locks in place.

If you will be
using legal paper,
pull out the tray
extension.

Important: The output tray must be attached correctly or the
machine will not operate.

• The machine does not have a power on/off switch. The power is
turned on and off by simply plugging in or unplugging the power
cord.

• If you area experiences a high incidence of lightning or power
surges, it is recommended that you install surge protectors for the
power and telephone lines. Surge protectors can be purchased
from your dealer or at most telephone specialty stores.

1 – 4

4) Connecting the telephone line cord.

Insert one end of the line cord into the socket on the back of the
machine marked TEL. LINE. Insert the other end into a wall tele­phone socket.

Make sure that the line cord is inserted into the TEL LINE jack. Do
not insert it into the TEL. SET jack!

TEL.
LINE

TEL.
SET

Setting the dial mode:

The machine is set for tone dialing. If you are on a pulse dial line, you must set
the fax machine for pulse dialing. Press the keys on the operation panel as
follows :

1 Make sure that the date and time

display of fax mode appears (if needed

FAX

press ) and then press

MENU

2 Press .

3 Press .

4 Select the dial mode:

TONE: PULSE:

Display:

FAX SETTING

1: DATE&TIME SET

1:TONE

The display briefly shows
your selection, then:

5: RINGER VOLUME

AM-900U

1) Press the side cover release , open the side cover ,

and then open the front cover .

1

3

1

3

2

• Caution! The fusing unit inside the print compartment becomes
very hot during operation. Do not touch the inside of the print com­partment after the machine has been in operation.

2) Remove the new drum cartridge from its packaging, and remove
the tape from the top of the cartridge.

3) Insert the drum cartridge into the print compartment, sliding it along
the guides.

• Do not touch or allow other objects to contact the drum (the green
cylinder). This may damage the drum. If fingerprints, dust, or other
contaminants get on the drum, wipe it gently with a clean cloth.

• Exposure to light for more than several minutes will damage the
drum. Be sure to insert the drum cartridge promptly into the
machine.

• If you find it necessary to leave the cartridge out of the machine
for move than several minutes, wrap the cartridge in black paper.

2

5

Press repeatedly to exit.

Important: The facsimile function of this machine is not designed
for use on a line which has call waiting, call forwarding, or certain
other special services offered by your telephone company. If you
attempt to use the facsimile function in conjunction with any of
these services, you may experience errors during transmission and
reception of facsimile messages.
The facsimile function of this machine is not compatible with digital
telephone systems.

3. Installing the toner cartridge and drum cartridge

The laser printer in the machine uses a toner cartridge and drum car­tridge.

• The starter toner cartridge included with the machine can print
approximately 1,500 letter-size pages at 5% page coverage.

• When replacing the toner cartridge, use a SHARP AM-90ND toner
cartridge. One cartridge can print about 3,000 letter-size pages at
5% coverage.

• The drum cartridge can print approximately 20,000 letter-size
pages. When replacing the drum cartridge, use a SHARP AM-
90DR drum cartridge.

Follow the steps below to install the toner cartridge and the drum car­tridge.

Note: The quality of the toner cartridge is guaranteed for 18 months
after the date of manufacture indicated on the package. The quality of
the drum cartridge is guaranteed for 24 months after the date of manu­facture indicated on the package.

Grasp this handle to

push the cartridge in.

4) Remove the new toner cartridge from its packaging. Shake the car­tridge side to side four or five times to distribute the toner evenly
within the cartridge.

1 – 5

AM-900U

1 Press and then or

repeatedly until the display at right

appears.

MENU

Z

A

Display:

LIFE

2 Press .

3 Press .

4 Press repeatedly to exit.

CLEAR: START KEY

DRUM COUNTER

1: LIFE COUNTER

1 Press and then or

repeatedly until the display at right

appears.

2 Press .

3 Press .

4 Press repeatedly to exit.

MENU

Z

A

Display:

CLEAR: START KEY

LIFE

TONER COUNTER

3: CLR DRUM COUN T

5) Grasp the cartridge handle and insert the toner cartridge into the
print compartment, sliding it along the guides.

• After inserting the cartridge, press on the arrow mark to mark sure
it “clicks” into place.

• Do not touch the roller in the toner cartridge.

Grasp this
handle to
insert the
cartridge.

6) Close the front cover and then the side cover .

Press on this mark to
make sure the cartridge
"clicks" into place.

1

2

4. Resetting the drum counter

Each time you install a new drum cartridge, follow the steps below to
reset the drum counter to zero.

5. Manually resetting the toner counter

When a new toner cartridge is installed, the toner counter is reset in
Step 7 on the previous page. The procedure below is normally not nec­essary; however, it can be used in the event that you need to reset the
toner manually.

• Make sure the side cover is completely closed. Otherwise, light
may enter the print compartment and damage the drum.

Display:

TONER EXCHANGED?

1

2

1=YES,2=NO

7) If you installed a new toner cartridge, press to select YES

(this will reset the toner counter to zero).

NEW TONER?

OK: PRESS START

• If you temporarily removed and then replaced an old toner car-

tridge for maintenance or other reason, press to continue

6. Loading printer paper

You can load up to 250 sheets of letter or legal paper (max. 20lbs.) in
the paper tray.

Caution! Do not use the blank side of paper that has already been
printed on.

1) Remove the output tray.

using the previous toner count. (Note: Be sure to press ,

or the machine will not alert you when the toner cartridge is out of
toner.)

8) Press .

9) If you installed a new drum cartridge, reset the drum counter as
explained below.

1 – 6

2) Insert a stack of paper into the tray, print side up.

• Important! The stack of paper must not be higher than the paper
height line on the paper tray.

Paper height line

3) Squeeze the sides of the paper guide as shown and slide it to the
slot for the length of the paper you are loading.

4) Replace the output tray.

• If you loaded legal size paper (or you changed the paper size),
change the paper size setting as explained below.

7. Setting the paper size

The machine has been set at the factory to use letter size paper. If you
loaded legal size paper, you must change the paper size setting to
LEGAL.

COPY

1 Press (or ) and then .

SCAN

MENU

2 Press .

3 Select the paper siz e:

LETTER: LEGAL:

4 Press repeatedly to exit.

Display:

COMMON SETTING

1:LETTER

The display briefly shows
your selection, then:

2: AUTO CLE AR

AM-900U

8. Installing the software

To use the machine as a printer and scanner for your computer, you
must install the software and connect a USB cable. The CD-ROM that
comes with the machine contains the following software:

• MFP Drivers: These consist of the printer driver that allows the
machine to be used as a printer, and the scanner driver that allows
you scan using TWAIN and WIA compliant applications.

• Sharpdesk: This is an integrated software environment that makes
it easy to manage image files and launch applications. (Note that
Internet Explorer 5.5 or higher is required to install Sharpdesk; if
this is not installed, you will be prompted during the installation pro­cedure to install Internet Explorer 6.0SP1

Minimum system requirements

Operating system: Windows 98 SE

Port: USB 2.0 or 1.1 port

Display: 800 x 600 (SVGA) with 256 colors or more

Free hard-disk space: 150 MB or more

Other requirements: An environment in which the operating
system can freely operate.

Comments:

• USB 2.0 Hi-Speed is only possible if your computer has a USB 2.0
port and you are using a USB 2.0 cable. In addition, the Microsoft
USB 2.0 driver must be preinstalled in your computer, or the USB

2.0 driver for Windows 2000/XP
Update must be installed. Note that USB 2.0 Hi-Speed is not possi­ble in Windows 98 SE

®

or Me®.

• To scan a legal size document (the maximum size) at 1200 dpi in
full color, at least 600 MB or more of free hard disk space is
required on the drive where your operating system is installed.

Installing the software

• A USB cable is required to connect the machine to your computer.
Please purchase a USB 2.0 or USB 1.0/1.1 cable. (If you wish to
use USB 2.0 Hi-Speed mode and your system meets the require­ments for Hi-Speed mode, purchase a USB 2.0 cable.) The USB
cable will be connected during the software installation procedure.

• To install the software on Windows 2000/XP
you must log in with administrator’s rights.

• The windows shown in the following procedure appear in Windows

®

XP

. The windows that appear in other versions of Windows may

be slightly different.

1) Make sure that the USB cable is not connected to your computer.
(The cable will be connected in Step 10.)

• If the USB cable is connected, a Plug and Play window will
appear. Click the Cancel button to close the window and discon­nect the cable.

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

3) In Windows XP

®

, click the start button, click My Computer, and

then double-click the CD-ROM icon.

In Windows 98/Me/2000

®

, double-click My Computer on the desk-

top and then double-click the CD-ROM icon.

4) Double-click the setup icon ( ) in the CD-ROM window.

5) Follow the instructions in the windows that appear.

• When the Setup Type Selection window appears, select Stan­dard to install all of the software components (this should normally

be selected). If you only wish to install certain components, select

Custom and then select the components that you wish to install.
Note: If you wish to select the folder where Sharpdesk is installed,
select Custom.

®

from the CD-ROM.)

®

/ Me® / 2000® / XP

®

provided through Windows

®

using the installer,

®

1 – 7

AM-900U

• In Windows 2000/XP®, if a warning message appears at any time
regarding the Windows logo test or digital signature, be sure to
click Continue Anyway or Yes.

6) When the Finish window appears to indicate that the selected
packages have been installed, click Close.

7) If the installation was a Standard installation, the following window
will appear. Click OK.

9) The Search Setup Wizard will appear. Follow the on-screen instruc­tions to create an index database for Sharpdesk.

10)Make sure that the power cord of the machine is not plugged in
(the machine is powered off), and then connect the USB cable.

• Insert one end of the USB cable into the USB port on the machine
and the other end into your computer’s USB port.

Note: Do not connect the AM-900 to a hub to which another AM­900 is connected. If this is done, the AM-900 will not operate cor­rectly.

• If you installed the MFP drivers using a Custom installation and
did not install Sharpdesk, the following window will appear. Click
OK and go to Step 10.

8) The following window will appear. Click Yes to restart your com­puter.

11)Plug in the power cord of the machine.

• Windows XP
the software.

• Windows 2000

Note: If a warning message regarding the Windows logo test

appears (the warning may appear twice), click Yes each time the
window appears. This will complete the installation of the software.

• Windows Me
ware.

Completing installation of the software on Windows XP®

(Continued from Steps 10 and 11.)

®

: Go to the procedure for completing installation of

®

: This completes the installation of the software.

®

/98SE®: This completes the installation of the soft-

1 – 8

12)In Windows XP®, the Found New Hardware Wizard will appear.
Make sure that Install the software automatically (Recom-
mended) is selected and click Next (this will install software for
using the machine as a scanner).

AM-900U

14)After a brief interval, the Found New Hardware Wizard will appear
again to install software for using the machine as a printer. Make
sure that Install the software automatically (Recommended) is
selected and click Next.

• Note for Windows XP SP2
first. Select No, not this time and click Next. Continue from the
above window.

• If the following warning message appears regarding the Windows
logo test, click Continue Anyway.

®

: The following window will appear

• If the following warning appears regarding the Windows logo test,
click Continue Anyway.

15)When the wizard finishes installing the printer software, click Finish
to close the Wizard. This completes the installation of the software
on Windows XP

Sharpdesk online guide

For information on using Sharpdesk, view the Sharpdesk online
guide on the CD-ROM. To view the online guide, open the Manual
folder and then the EnglishA folder on the CD-ROM, and double­click SDUG_Enu.pdf.

Removing the software

In the event that you need to remove the software from your com­puter, open the Control Panel and select Add or Remove Pro-

grams (or Add/Remove Programs). Select SHARP AM-900
Series MFP Driver (or Sharpdesk) from the list, and click the
Change/Remove button (or the Add/Remove button). When
prompted to confirm the removal, click OK.

®

.

13)When the wizard finishes installing the scanner software, click Fin­ish to close the wizard.

1 – 9

AM-900U

9. Clearing a jammed document

If the original document doesn’t feed properly during transmission or
copying, or DOCUMENT JAMMED appears in the display, first try

10. Clearing jammed printing paper

1) Press the side cover release and then open the side cover

1

pressing . If the document doesn’t feed out, open the auto

document feeder cover and remove it.

Important:

Do not try to remove a jammed without opening the auto document
feeder cover. This may damage the feeder mechanism.

1) Squeeze the cover release and open the auto document

feeder cover. Open the document glass cover.

2) Remove the document.

• The document can be removed from either the top or the bottom
slot, whichever is easiest.

1

1

2

.

1

2

2) Push the two heater roller release levers down to release the
heater roller.

• Caution! The fusing unit (indicated in white at right) becomes
very hot during operation. Do not touch the fusing unit.

3) Close the auto document feeder cover, pressing down on both
sides to make sure it clicks into place.

Press down
on the marks

3) If the jammed page is protruding from the side of the machine, gen­tly pull it out. Take care not to tear the paper or leave any torn
pieces of paper in the print compartment.

• If this clears the jam, go to Step 5.

• If you are unable to clear the jam in this way, go to Step 4.

• Take care not to touch or allow other objects to contact the drum

(the green cylinder). This damage the drum.

1 – 10

4) If the jammed page cannot be pulled out directly, open the front

AM-900U

cover and rotate the white knob in the direction

shown to feed the jammed page out into the output tray.

5) After the jammed page has been removed, push the two heater
roller release levers back up.

1

2

1

2

6) Close the front cover (if you opened it) and then the side

cover .

2

1

2

1

1 – 11

AM-900U

11. Troubleshooting

1. Display

ADD PAPER Check the printing paper. If the tray is empty, add

BYPASS MISFEED The paper is not inserted correctly in the bypass tray.

BYPASS PAPER! /
IF COPY, PRESS
(alternating messages)

COVER OPEN One or both of the print compartment covers are

DATE/TIME UNSET The date and time need to be set. Note

DOCUMENT JAMMED The original document is jammed. See the following

DOCUMENT READY A document has been inser ted in the auto document

DRUM LIFE OVER This appears when the drum cartridge needs

paper. If there is paper in the tray, make sure it is
inserted correctly (take out the stack, align the edges
evenly, and then reinser t it in the tray). Pr inting will
resume automatically when the output tr ay is
replaced.

Remove the paper and insert it again.

Paper has been inserted in the bypass tray. If the

paper has been inser ted for a copy job, press to

set the paper size. If the paper is for a print job, the
message can be disregarded.

open. Make sure both covers are closed.

that the date and time settings will be lost if the
machine is unplugged or a power failure occurs.

section, Clearing Paper Jams. Document jams will
occurifyouloadmorethan20pagesatonceorload
documents that are too thick.
The document may also jam if the receiving machine
doesn’t respond properly when you attempt to send a
fax.

feeder and the machine is waiting for you to begin
faxing, copying, or scanning.

replacement.

SET BYPASS PAPER /
SIZE: XXXX
(alternating messages; a
paper size appears in
“XXXX”)

SYSTEM ERROR [XX]
(a number appears in
“XX”)

(Refer to Printer error code/
Scanner error code)

A

TONER EMPTY The toner car tridge must be replaced. Printing is not

TONER NEAR EMPTY The toner cartridge is almost out of toner

TOTAL PAGE(S) 01 Number of fax pages transmitted or received.

Paper must be inserted in the bypass tray for a print
job or copy job that requires use of the bypass tray.
Insert the indicated size of paper in the tray.

If this message appears, unplug the power cord, wait
about 10 seconds, and then plug it back in. If the
message still appears, unplug the power cord and call
SHARP’s Customer Assistance Center at at 1-877­794-8675 (U.S.A. only).

possible until the toner cartridge is replaced.

(approximately 100 pages can be pr inted).

2. Audible signals

Continuous tone 3 seconds Indicates the end of transmission,

Intermittent tone
(3 beeps)

Rapid intermittent
tone

5 seconds
(1 second on, 1
second off)

35 seconds
(0.7 seconds on,

0.3 seconds off)

reception, or copying.

Indicates incomplete transmission,
reception, or copying.

Indicates that an extension phone
connected to the machine is off hook.

FAX RX IN MEMORY A fax has been received in memory because the

GRP. SPACE FULL This appears if you attempt to store a Group when

LINE ERROR Transmission or reception was not successful. Press

MEMORY IS FULL If faxes have been received to memory because

MEMORY PRINTING The machine is preparing to or printing out a

NO # STORED This appears if you attempt to search for a Speed Dial

OFF HOOK This appears when an extension phone connected to

OUTPUT TRAY OFF The output tray is not attached correctly. Attach it as

PAPER JAMMED The printing paper is jammed.

REMOVE /
BYPASS PAPER
(alternating messages)

toner cartridge needs replacement, you have run out
of printing paper, the paper is jammed, or paper is
inserted in the bypass tray. The fax will pr int out
automatically when the problem is fixed.

both Groups are already programmed.

the STOP key to clear the message and then tr y
again. If the error persists, see Line error.

printing is not possible (an additional message will
indicate the problem), resolve the problem so that
printing can continue (see Substitute Reception to
Memory)
If you are attempting to send a fax, see If the memory
becomes full.
If you are copying, see If MEMORY IS FULL appears.

document from memor y.

number when none have been stored.

the machine is lifted. Only can be pressed in

fax mode when this message appears.

explained. The machine will not operate if the output
tray is not attached correctly.

A fax has been received to memory because paper is
inserted in the bypass tray (faxes cannot be printed
while paper is in the bypass tray). Remove the paper
from the bypass tray to allow the fax to be printed.

3. Printer error code (Troubleshooting Refer to page 5-26 to 5-28)

SYSTEM ERROR [P1] The roller sensor could not detect its home position

SYSTEM ERROR [P2]

SYSTEM ERROR [P3]

SYSTEM ERROR [P4] ROM or RAM error was detected on the printer

SYSTEM ERROR [P5] High temperature error was detected.

SYSTEM ERROR [P6] Low temperature error was detected.

SYSTEM ERROR [P7]

after driving the pick up motor for the specified period.

The roller sensor could not become NOT-Active after
passing the specified period from picking up paper.

The printer controller detected the optical unit (LSU)
error.

The external interrupt signal for optical unit (LSU) or
High-voltage control did not become active after
passing the specified period.

Thermistor error was detected.

control unit.

Communication error between the main controller
and the printer controller was detected.

4. Scanner error code (Troubleshooting Refer to page 5-28)

SYSTEM ERROR [S1] The scanner unit could not detect change point of

home postion. (ON-> OFF or OFF->ON)

1 – 12

12. Quick setup guide

AM-900U

For detailed instructions

IMPORTANT!!

Should you require
any assistance
setting up or
operating your
product, please

DO NOT RETURN
YOUR PRODUCT
TO THE STORE.

After referring to the setup
guide and operation
manual, if you still require
assistance please consult
our web page at http://
www.sharpusa.com. From
our web page you will be
able to directly e-mail our
customer support team.
If you would like personal
assistance, please call our
Customer Assistance
Center at 1-877-794-8675
(U.S.A. only).

Install the toner cartridge and drum cartridge.

6

1

1. Press . Open the side cover

2

and then the front cover .

3

on setting up and using the AM-900,
see the online guide on the
CD-ROM.
To open the guide, double-click the
Manual folder on the CD-ROM,
double-click EnglishA, and then
double-click Online Manual.pdf.
(Note: Acrobat Reader 5.05 or higher
is required to view the manual.To
install Version 5.05, double-click

Acrobat Reader, English, and then
ar505eng.exe on the CD-ROM.)

3

1

2

Important:
Pull the scanner release toward
you to release the scanner lock.

2. Remove the drum car tridge from its

3

Caution!

Do not touch the fusing unit
under the side cover after the
machine has been in operation,
as it may become ver y hot.

packaging, and remove the tape from
the top of the car tridge.

Make sure you have the following

1

items. If any are missing, contact
your dealer or retailer.

Telephone
line cord

Output tray

Toner
cartridge

Document
feeder tray

Plug the power cord into a 120 V,

4

grounded AC (3-prong) outlet.
Caution: Be sure to release the
scanner lock (Step 3) before
plugging in the power cord.

3. Insert the drum cartridge,

Grasp this handle to
push the cartridge in

Drum
cartridge

Setup

CD-ROM

Guide

sliding it along the guides.

Attach the trays.

2

If you will be
loading legal
paper, pull the
extension out.

When the tray
stops, lift the end
slightly and push in.

Connect the phone line cord

5

to the TEL. LINE jack and a
wall jack.

TEL

.

LIN

E

T

E

L.

S

ET

Note: An extension phone can be
connected to the TEL. SET jack with
removing the seal covering the jack.

4. Remove the toner cartridge from its
packaging. Shake the car tr idge side
to side four or five times to distribute
the toner evenly within the
cartridge.

5. Insert the toner car tridge, sliding it along
the guides

until it clicks into place

Press on the arrow
mark to make sure
the car tridge clicks
into place

Load paper.

7

1. Remove the output tray.

3. Squeeze the sides of the paper
guide and slide it to the slot for
the length of paper loaded.

If you loaded legal paper, see the online guide
to change the paper size setting to LEGAL.

6. Close the front cover and

.

2. Insert a stack of paper
into the tray, print side up.

4. Replace the output tray.

thenthesidecover .

The stack should
not be higher
than this line

1

2

2

1

8

7. Press

then press . (This resets

the toner cartr idge counter.)

Display:

TONER EXCHANGED?

1=YES, 2=NO

Set the date and time that appear
in the fax mode display.

FAX

1. Press , , , .

• The currently set date and time appear

in the display.

2. Enter a 2-digit number for the month.

Example: February

• To clear a mistake press .

3. Enter a two-digit number for the day
("01" to "31").

Example: the 5th

4. Enter the year (four digits)

Example:

to select “YES” and

MENU

Z

8. Reset the drum car tridge counter:

MENU

a.Press

A

display.

b. Press and then .

c. Press repeatedly to exit.

5. Enter a two-digit number for the hour
and a two-digit number for the minute.

Example: 9:25

6. Press to select A.M. or to

select P.M.

7. Press .

ENTER

8. Press repeatedly to exit.

once and then or

until “LIFE” appears in the

Z

1 – 13

AM-900U

Install the software on your computer. (The software

9

allows the machine to be used as a printer and scanner.)

1. Make sure that a USB cable is not connected
to the machine and your computer. (The cable

will be connected in Step 10.)

• If a cable is connected and a Plug and Pla y

window appears, close the window and
disconnect the cable.

2. Insert the Sharp CD-ROM into your computer’s
CD-ROM drive.

3. Windows XP
Computer, and double-click the CD-ROM icon.

Windows 98SE/Me/2000
Computer on the desktop and double-click the
CD-ROM icon.

R

: Click the start button, click My

R

: Double click My

4. Double-click the setup icon ( ) in the CD-

ROM window.

5. Follow the on-screen instructions.

• When the Setup Type Selection window

appears, select Standard to install all of the
software components (this should normally be
selected). If you only wish to install certain
components, select Custom and then select the
components that you wish to install.

Note: A USB 2.0 or 1.1 cable is required to connect the
machine to your computer. Please purchase this separately.

• If you installed the MFP drivers using a Custom

installation and did not install Sharpdesk, the
following window will appear. Click OK and go to
Step 10.

8.

The following wind ow will appear. Click Yes to restart
your computer.

9. The Search Setup Wizard will appear. Follow the

on-screen instructions to create an index
database for Sharpdesk.

10. Make sure that the machine’s power cord is not

plugged in, and then connect the USB cable to the
USB port on the machine and on your computer.

R

• Windows Me /98SE : This completes the

installation of the software.

Completing the installation on Windows XP

12. In Windows XP , the Found New Hardware
Wizard will appear. Make sure that Install the
software automatically (Recommended ) is
selected and click Next.

Note for Windows XP SP2

the wizard will ask you if the wizard can connect
to Windows Update. Select No, not this time and
click Next.

• If a warning message appears regarding the

Windows logo test, click Continue Anyway.

13.

When the wizard finishes installing the software, click
Finish to close the wizard.

14. After a brief interval, the Found New Hardware

Wizard will appear again. Make sure that Install
the software automatically (Recommended) is

selected and click Next.

R

R

R

R

: The first window of

• In Windows 2000/XP , if a warning message

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

6. When the Finish window appears to indicate that

the selected packages have been installed, click
Close.

7.

If the installation was a Standard Finstallation, the
following wind ow will appear. Click OK.

Link each scan menu that you wish to use in

10

scan mode to a program on your computer.

Windows XP /Me

1. Windows XP : Click the start button, Control
Panel, Printers and Other Hardware, and
Scanners and Cameras.

Windows Me
Settings, select Control Panel, and double-click
Scanners and Cameras.(IfScanners and
Cameras does not appear, click view all
Control Panel options).

2. Right-click the SHARP AM-900 icon and select
Properties.

3. The SHARP AM-900 Properties appear. Click
on the Events tab.

4. Select SC1 (scan menu SC1) from the Select an
event list.

5. In the Actions field, select Start this program
and then select the program that you wish to link
to scan menu SC1 from the list of programs.

R

R

R

R

R

: Click the Start button, point to

11. Plug in the machine’s power cord.

• Windows XP : Follow Steps 12 through 15 to

complete the installation of the software.

• Windows 2000 : This completes the installation

of the software.
Note: If a warning message regarding the
Windows logo test appears (the warn ing may
appear twice), click Ye s each time the window
appears. This will complete the installation of the
software.

R

R

You can scan directly from the machine by selecting scan mode and then one of scan menus
SC1 to SC6 on the operation panel. When this is done, the program linked to the selected scan
menu will automatically start on your computer and the image will be scanned to the program.

• If a warning message appears regarding the

Windows logo test, click Continue Anyway.

15. When the wizard finishes installing the software,

click Finish to close the wizard. This completes
the installation of the software on Windows XP

Windows 2000 /98SE

• Microsoft Scanner and Camera Wizard is

selected as an example in the window below.

1. Click the Start button, point to Settings, and
select Control Panel.

2. In the Control Panel, double-click Scanners and
Cameras.

3. Select SHARP AM-900 and click Properties.

4. Click the Events tab in the SHARP AM-900
Properties.

5. Select SC1 (scan menu SC1) from the Scanner
events list.

6. Click the Apply button.

7. Repeat Steps 4 through 6 as needed for any of
the other scan menus (SC2 to SC6) that you
wish to use. When finished, click the OK button.

6. In Send to this application, select the program

(only one) that you wish to link to scan menu SC1.

7. Click the Apply but ton.

8. Repeat Steps 5 through 7 for any of the other
scan menus (SC2 to SC6) that you wish to use.
When finished, click the OK button.

R

.

R

R

1 – 14

FAXAM-900UService ManualService ManualMarketE

CHAPTER 2. ADJUSTMENTS

[1] Adjustments

1. General

Since the following adjustments and settings are provided for this
model, make adjustments and/or setup as necessary.

2. Adjustments of output voltage (FACTORY ONLY)

1. Install the power supply unit in the machine.

2. Set the recording paper and document.

3. When the document is loaded, power is supplied to the output
lines. Confirm that outputs are within the limits below.

2.1. Output voltage settings

AM-900U

CNLSR

CNPM

CNHV

CNMM

CNPUM

CNTCT

CNFM

CNROLSNS

CNTCVR

CNBYPE

CNPIN

CNPW

1

FUSING UNIT

CNRTH

CNOUT1

CNOUT2

CONTROL PWB

(TOP SIDE)

14

CNHT

3

1

THERMAL

FUSE-2

CNSCM

CNCIS

CNLIU

CN6

1

1

1

2

CN2

POWER SUPPLY
PWB (TOP SIDE)

INTERLOCK

SWITCH

CNPN

CNFRT

CNORG

CNHPS

CNSP

CNUSB

3

CNPW

14

Output Voltage limits
+24VSUB 23.04V~24.96V

+24VMAIN 23.04V~24.96V

+5VMAIN 4.75V~5.25V

+3.3VMAIN 3.201V~3.399V

Connector CNPW

Pin No.

1

2
3
4
5 +24VMAIN
6 +24VMAIN

7DG

8

9

10

11

12

13

14

Connector

Pin No.

1

2
3

Connector

Pin No.

1

2
3

Connector

Pin No.

1

2

CNPW
MG
+24VSUB

MG
MG

+5VMAIN

DG

+3.3VMAIN

DG

/HEATER ON

/PWRLY

/ZC

CN6

+24VMAIN
N.C.

+24VS

CNHT

N
N.C.

L

CN2

1
2

2 – 1

AM-900U

3. High voltage power check

3.1. General

Note: Since the parts of this PWB cannot be supplied, change it as a unit.

CAUTION

DO NOT TOUCH!

CN1

CN3

(VR51)

Q3

D3

D10

J1

QJ005

VR1

D58

J6

D2

D8

J3

VR51

D1

D61

D62

D60

D52

D54

C1

J5

R1

J2

Q52

B51

QJ071

C9

Q38

B1

D9

D53

J4

C56

VR31

C65

C31

CAUTION HIGH VOLTAGE AREA MAX. 4000V

D4

C6

CN4

R93

D5

C5

J52

J51

R15

C7

D7

R16

R67

D31

J12

J11

J22

J21

J42

J41

J32

J31

CAUTION - HIGH VOLTAGE
The unit's back cover should never be opened by
anyone other than a qualified serviceperson.
There are many high voltage parts inside the unit,
and touching them is dangerous.

CAUTION HIGH VOLTAGE AREA MAX. 4000V

R10

R3

R9

R8

R3

C2

R44

R65

R66

R59

R94

R5

R98

R6

C55
R60

C52

R43

R74

R73

R103

R80

R79

R81

Q34

D42

R42

D41

R102

D59

Q33

Q32

Q31

D57 D56 D55

Q35

R32 R31

R41

R78

Q36

C32

R36

R34

R33 R35

R72

R71

R40

R70

R39

R38

Q37

R37

R86

IC1

C8

R92

R61

C53

R58

R75

R101

R69

R46

R76

R77

R83

R84

R85

R87

R88 R89 R90

C4
R13
R14

R7

R91

C54

R66

R11

R4

R18

R14

R47

Q51

R3

Q1

R19

R63

R53

R100

CN1

C61

R51

Q57

R54

R52
C62
R55
C51

CAUTION - HIGH VOLTAGE
The unit's back cover should never be opened by
anyone other than a qualified serviceperson.
There are many high voltage parts inside the unit,
and touching them is dangerous.

R2

R17

R57

R56

R99

C66

R48

Q58

R62

R50

R49

R64

2 – 2

3.2. MC Voltage Check Point

D3

CN3

CN1

C1

J5

R1

J2

Q52

VR1

D8

D10

VR51

D1

D58

J1

QJ005

B51

J3

D60

D52

AM-900U

Q3

J6

D2

D61

D62

D54

QJ071

C9

Q38

C65

D53

B1

GND (-)

D4

C6

D5

VR31

R15

C5

C7

D7

R16

R67

D31

D9

J4

C56

J52

J11

J41

J51

J12

J22

J21

J42

J32

J31

CN4

R93

MC Voltage Check Point (-)

(There is danger of an electric shock!)
Use Measuring instrument:

Input Resistance : more than 100 MΩ
Maximum Voltage : more than 2 kV

VOLTAGE
MC:-950V±20V(PRINTING)
MC:-850V±20V(CLEANING)

C31

1) MC Voltage

Voltage(v)

CAUTION - HIGH VOLTAGE
The unit's back cover should never be opened by anyone other than
a qualified serviceperson. There are many high voltage parts inside
the unit, and touching them is dangerous.

300Hz

Time(s)

Type

-570V

-950V

-1330V

Tolerance

± 67V

± 20V

± 67V

2 – 3

AM-900U

3.3. TC Voltage Check Point

D3

CN3

CN1

C1

J5

R1

J2

Q52

VR1

D8

D10

D1

D58

J1

QJ005

B51

VR51

J3

D60

D52

D2

Q3

J6

D62

D54

D61

QJ071

C9

Q38

D53

D9

C56

B1

GND (-)

D4

R15

C6

D5

C5

C7

D7

J52

J11

J51

J12

CN4

R93

TC Voltage Check Point (+)

(There is danger of an electric shock!)
Use High Voltage Tester:
Requirement of Measuring instrument:

Input Resistance : more than 100 MΩ
Maximum Voltage : more than 5 kV

R16

J22

R67

J4

D31

VR31

J21

J42

J41

J32

J31

VOLTAGE
TC(+):+3600V±72V(PRINTING)
TC(-):-500V±50V(CLEANING)

1) TC Voltage

Voltage(v)

C65

C31

CAUTION - HIGH VOLTAGE
The unit's back cover should never be opened by anyone other than
a qualified serviceperson. There are many high voltage parts inside
the unit, and touching them is dangerous.

300Hz

Type

-3980V

-3600V

-3220V

Time(s)

Tolerance

± 72V

2 – 4

3.4. SV/DV Voltage Check Point and SV (-) Voltage Adjustment Volume

Q3

CN3

CN1

D3

VR1

C1

J5

R1

D10

D1

D58

J1

J2

Q52

J6

D2

D8

J3

VR51

D60

C9

D61

D62

D52

QJ005

B51

D54

CAUTION - HIGH VOLTAGE
The unit's back cover should never be opened by anyone other than
a qualified serviceperson. There are many high voltage parts inside
the unit, and touching them is dangerous.

QJ071

D9

D53

Q38

J4

C56

C65

B1

VR31

C31

R15

D31

D4

C6

R93

D5

C5

J52

J51

C7

D7

R16

R67

J12

J11

J22

J21

J42

J41

J32

J31

AM-900U

GND (-)

CN4

DV Voltage Check Point (+)
VOLTAGE
DV(+):+300V±5V(CLEANING)
DV(-):-220V±5V(PRINTING)

SV Voltage Check Point (+)
VOLTAGE
SV(+):+400V±15V(CLEANING)
SV(-):-320V±15V(PRINTING)

DV (-) Voltage adjustment Volume
VR31
It can be made to change with VR31.
In the range of ± 50V.
DV(-):-220V±50V(PRINTING)

2 – 5

AM-900U

4. IC protectors replacement

ICPs (IC Protectors) are installed to protect the CIS unit, LIU PWB
unit, Scanner motor drive circuit, Pickup motor drive circuit, Main
motor drive circuit and IC22 circuit. ICPs protect various ICs and elec­tronic circuits from an overcurrent condition.

The location of ICPs are shown below:

5. Settings

5.1. Dial mode selector

DIAL mode (Soft Switch No. SW5 Data No. 5)

Use this to set the fax machine to the type of telephone line you are
on.

• The factory setting is “TONE”.

CNHV

CNLSR

F5

CNPM

F7

CNRTH

CNOUT2

CNOUT1

CNCIS

F8

CNSCM

F3

CNPN

CNFRT

CNORG

CNHPS

CNSP

CONTROL PWB

CNMM

CNPUM

F6

CNTCT

CNFM

CNROLSNS

CNTCVR

CNBYPE

CNPIN

F6/F8:Top side F3/F4/F5/F7:Bottom side

1) F8 (KAB5002 201) is installed in order to protect IC’s from an
overcurrent generated in the CIS unit. If F8 is open, replace it with a
new one.

2) F4 (KAB5002 251) is installed in order to protect IC’s from an
overcurrent generated in the LIU PWB unit. If F4 is open, replace it
with a new one.

3) F3 (KAB3202 202) is installed in order to protect IC’s from an
overcurrent generated in the scanner motor drive circuit. If F3 is
open, replace it with a new one.

4) F5 (KAB5002 251) is installed in order to protect IC’s from an
overcurrent generated in the IC22 circuit. If F5 is open, replace it
with a new one.

5) F6 (KAB3202 102) is installed in order to protect IC’s from an
overcurrent generated in the pickup motor drive circuit. If F6 is
open, replace it with a new one.

6) F7 (KAB2402 402) is installed in order to protect IC’s from an
overcurrent generated in the main motor drive circuit. If F7 is open,
replace it with a new one.
In addition to the replacement of F3, F4, F5, F6, F7 and F8, the fac­tor causing F3, F4, F5, F6, F7 and F8 to open must also be
repaired. If not, F3, F4, F5, F6, F7 and F8 will open again.
Replacement parts

KAB3202 202 (Sharp code: QFS-L1027YCZZ)

KAB5002 251 (Sharp code: QFS-L2021XHZZ)

KAB3202 102 (Sharp code: QFS-L0004QCZZ)

KAB2402 402 (Sharp code: QFS-L2025XHZZ)

KAB5002 201 (Sharp code: QFS-L2016XHZZ)

(TOP SIDE)

CNPW

CNUSB

F4

CNIU

(step 1) Select "OPTIONAL SETTING".

KEY:

DISPLAY:

(step 2) Select "DIAL MODE".

(step 2) Select "DIAL MODE".

KEY:

KEY: ,

DISPLAY:

DISPLAY:

2

FAX

FAX SETTING

4

1=TONE

MENU

("2=PULSE" is displayed in the
autoscroll mode.)

(step 3) Select, using "1" or "2".

KEY: for TONE

KEY: for PULSE

1

2

(step 4) End, using the "STOP" key.

(Press the "STOP" key three times.)

KEY:

2 – 6

[2] Diagnostics and service soft switches

Press

, and

the

following

display will appear.

MENU

9 8

6

M/C Ver:TE53

(Diag•specifications)

MENU

9 8 6

ENTER SINGLE PRINT

ENTER CONTINUOUS PRINT

ENTER

COPY AGING

ENTER

LIFE MODE

ENTER

TOP VOID ADJUST

ENTER

PRINT ADJUST

ENTER

TEST MODE

START

START

ENTER

Then press the

key. Select the desired item with the

key and the key or select with the rapid key.

Enter the mode with the key.

PRINT DIAG MODE

: PRINTER ROM version

M/C Ver:TE53

(The alternate display of two screens.)

MEMORY CLEAR

1:CLEAR

[1]Key

[2]Key

Stand-by display

1. Entering the diagnostic mode

1.1. Fax diagnosis

This diagnosis is concerned with the main body of fax which is used
for production and service support.

Entering the diagnostic mode

AM-900U

1.2. Print diagnosis

This diagnosis is concerned with the print which is used for production
and service support.

Entering the diagnostic mode

Press

MENU

9 8

display will appear.

TC84 / x x x x

Then press the

START

: FAX ROM version

x x x x : Check sum

key. Select the desired item with the

and the key or select with the rapid key.

ENTER

Enter the mode with the

(Diag

•

specifications)

9 8 7

MENU

ENTER

ENTER

ENTER

ENTER

ENTER

ENTER

ENTER

ENTER

ENTER

SOFT SWITCH MODE

ROM & RAM CHECK

PANEL CHECK MODE

CHECK PATTERN MODE

SIGNAL SEND MODE 1

SIGNAL SEND MODE 2

MEMORY CLEAR

CIS ADJUSTING MODE

DIAL TEST MODE

DIAG MODE U.S.A./Canada

key.

TC84 / x x x x

(The alternate display of three screens.)

START

7

,and

the

following

key

Memory clear when power is turned on

Pressing the START and STOP keys, turn on the main power, and the
following message will be indicated.

ENTER

ENTER

ENTER

ENTER

AUTO FEEDER MODE

FLASH MEMORY TEST

GEAR CHANGE MODE

FLATBED AGING

MEMORY CLEARING

When 1 is selected, the memory will be cleared to be ready to opera­tion.

If 2 is selected, memory will not be cleared and the machine enters
standby mode.

2 – 7

AM-900U

ROM & RAM CHECK

ROM = RAM=

Start checking

by pressing [EN TER] key

ROM=OK,RAM=OK

PRINTING

ALL KEY OK !!

2. Diagnostic items description

2.1. Fax diagnosis

2.1.1 Soft switch mode

In this mode, the soft switches are set and the soft switch list is printed.

1. Operation

Soft switch mode screen

SOFTSWITCH MODE

[ENTER] Key

SW01=01010010

Switch No.

2. Switch number selection and data setting

1) Enter two digits of a soft switch number to set the switch num-

ber. Of a switch number of non-existing soft switch is entered,
key error buzzer sounds to reject the input.

SW01=01010010

cursor position

2) Press [ENTER] key for setting of the next soft switch.

12345678:DataNo.

SW01 =

[1]key

SW16=01010010

[ 6 ] key

5. Storage of data

In the following cases, the data if the soft switches set will be
stored.

• It is shifted to set the next soft switch by pressing [ENTER] key.

• It is shifted to set the next soft switch with the [>] key.

• It is shifted to the last soft switch with the [<] key.

• It is shifted to set another soft switch by inputting two digits as
the switch number.

• Output of the soft switch list starts.

6. Protocol monitor

If the SW No. 8 Data No. 5 is set to 1, the protocol monitor result is
printed after fax communication.

2.1.2 ROM & RAM check

To check the sum value of Firmware or RAM.

No. Device Alarm Buzzer Remarks

1

2 D-RAM1(*1) 2 times <Short

*1 WORK MEMORY (SDRAM 16M).

1. Display

ROM
(PROGRAM FLASH)

Main

1 time <Short
sound>

sounds>

SW01=01010010

cursor position

[ENTER]Key

SW02=01001100

SW03=01001100

[ENTER]Key

3) Data number selection

(a) Pressing [>] key moves the cursor to the right.

If the cursor is on data number 8, pressing [>] key shifts the cur­sor to data number 1 of the next switch number. If the switch
number is the final, pressing [>] key will exit the soft switch
mode.

SW01=01010010

cursor position

SW02=01001100

[>]Key

SW03=01001100

with the cursor on bit8
[>]Key

(b) Pressing [<] key moves the cursor to the left.

If the cursor is on data number 1, pressing [<] key shifts the cur­sor to data number 1 of the former switch number. If the switch
number is 1, pressing [<] key do not move the cursor.

SW03 = 01010010

cursor p ositio n

SW03 = 0 1001100

cursor p ositio n

SW03=01001100

[<]Key

SW02=01001100

[<]Key

SW03=01001100

[<]Key

SW01=01001100

with the cursor on bit 1
[<]Key

3. Data setting

Press the [MENU] key, and the data to the position of the cursor will
be reversed to 1 when it is 0, or to 0 when it is 1.

4. Outputting method of soft switch list

In the soft switch mode, press [QUALITY] key, and the soft switch
list will be printed. If the recording paper runs out or is clogged, the
key error buzzer will sound with the process not received.

2. Result printing

After checking, the results print starts.

2.1.3 Panel key test

This is used to check whether each key is normally operated or not.
When the test is started, a LED will blink (1000ms cycle) for the LED
test. During the test. After the test, the test result will be printed.

* When any numeric key is pressed during the panel test, the DTMF
signal correspond to the key number is sent to the line. If another key
is pressed the DTMF signal will stop. This function becomes valid by
changing the value of soft switch. (Default: Disable)

1) Flow

Press any key except [STOP] key. At this time, the name of each
key will be displayed every push of the key.

PANEL CHECK MODE

1

To finish this mode, press [STOP] k ey

PRESS EACH KEY

[ENTER] key

START

[START ]Key

Go to (a or b).

a) When all keys can be inputted, the following message will be dis­played.

Then the screen will be all displayed in blank (Refer to (2)) and the
test result will be printed.

1

[1]Key

..... (other key)

2 – 8

b) If any key skipped, the following message will be displayed.

SIGNAL SEND2

CML ON

[ENTER]Key

V.34 33600bps

V.34 26400bps V.34 28800bps

[ENTER]Key

V.34 31200bps

V.34 24000bps V.34 21600bps

[ENTER]Key

V.34 19200bps

V.34 12000bps V.34 14400bps

[ENTER]Key

V.34 16800bps

V.34 9600bps

V.34 7200bps

[ENTER]Key

V.34 4800bps

V.34 2400bps

[ENTER]Key

[ENTER]Key

[ENTER]Key

[ENTER]Key

[ENTER]Key

[ENTER]Key

[ENTER]Key

[ENTER]Key

[ENTER]Key

[ENTER]Key

ANSam V.21 0 - 300bps

[ENTER]Key

[ENTER]Key

CIS ADJUST

[ENTER]Key

The motor will move to the specified position and the reading lamp is lit on.

1: COLOR

1 key

2: MONO

2 key

KEY ERROR !!

A key name that is not pressed yet is displayed so that this test can
be continued.

At that time, pressing the [STOP] key will exit this mode. And the
result will be printed.

2) Black screen

2.1.4 Check pattern mode

The effective printing area frame is printed in the specified sheet size
of the standard tray (Letter/Legal/A4).

1. Printing the pattern

Printing size depends on Paper Size setting in Common Setting.

AM-900U

2.1.6 Signal send mode 2

The specified signals about V.34 and V.8 mode transmitted in the fol­lowing sequence to check the modem.

1. Press the [ENTER] key, and no signals with the loop state starts.

[ 1] No signals (making the loop) [ 9] 16800bps (V.34)
[ 2] 33600bps (V.34bis) [10] 14400bps (V.34)
[ 3] 31200bps (V.34bis) [11] 12000bps (V.34)
[ 4] 28800bps (V.34) [12] 9600bps (V.34)
[ 5] 26400bps (V.34) [13] 7200bps (V.34)
[ 6] 24000bps (V.34) [14] 4800bps (V.34)
[ 7] 21600bps (V.34) [15] 2400bps (V.34)
[ 8] 19200bps (V.34) [16] 0-300bps (V. 21)

[17] ANSam

CHECKP ATTERN

[ENTER]Key

NOW AGING

2.1.5 Signal send mode 1

The specified signals are transmitted in the following sequence to
check the modem.

1. Press the [ENTER] key, and no signals with the loop state starts.

[ 1] No signals (making the loop) [ 9] 9600bps (V.29)
[ 2] 4800bps (V.27ter) [10] 7200bps (V.29)
[ 3] 14400bps (V.33) [11] 4800bps (V.27ter)
[ 4] 12000bps (V.33) [12] 2400bps (V.27ter)
[ 5] 14400bps (V.17) [13] 300Hz (FLAG)
[ 6] 12000bps (V.17) [14] 2100Hz (CED)
[ 7] 9600bps (V.17) [15] 1100Hz (CNG)
[ 8] 7200bps (V.17)

SIGNAL SEND1

V.17 14400bps V.33 12000bps

[ENTER]Key

V.17 12000bps V.17 9600bps

V.27ter 4800bps V.29 7200bps

[ENTER]Key

V.27ter 2400bps

[ENTER]Key

[ENTER]Key

[ENTER]Key

[ENTER]Key

[ENTER]Key

CML ON

FLAG (300bps)

2. Pressing the [ENTER] key during transmitting CNG signal, or
pressing the [STOP] key will stop the output of signal and exit the
mode.

[ENTER]Key

[ENTER]Key

[ENTER]Key

[ENTER]Key

[ENTER]Key

V.27ter 4800bps

[ENTER]Key

V.33 14400bps

V.17 7200bps

[ENTER]Key

V.29 9600bps

2100 Hz (CED TONE)

[ENTER]Key

1100 Hz (CNG)

2. Pressing the [ENTER] key during transmitting ANSam signal, or
pressing the [STOP] key will stop the output of signal and exit the
mode.

2.1.7 Memory clear

Clear the backup memory including the soft switches, registration
data. After executing this mode, the memory clear report is printed.

Note: The following data is not cleared. Values for Printer life including
the adjusted value of printing void.

2.1.8 CIS adjusting mode

When the "color scan" or "monochrome scan" is selected in this mode,
the scanner motor moves from its home position to the specified value.
Then, the document reading lamp is turned on.

1. Press the [STOP] key to exit the mode.

2 – 9

AM-900U

GEAR CHARGE MODE

ADF : COUNT = 00001

FBED : COUNT = 00001

ADF : COUNT = 00002

FBED : COUNT = 00002

[ENTER]Key

Drive the gear as Flatbed mode.

Move from Home Position to the reading direction. After
pause, move to the reading position from ADF.

Drive the gear as ADF mode.

Pause and drive reversely.

Move from Home Position to the reading direction.

After pause, move to the reading position from ADF.

Pause and drive reversely.

This sequence w ill be terminated by pressing STOP key.

Drive the gear as ADF mode.

Drive the gear as Flatbed

Press STOP key to terminate this aging.

MOTOR AGING MODE

300 MONO

600 MONO

300 COLOR

600 COLOR

[ENTER]Key

[>] Key

[>] Key

[>] Key

Aging will start
by pressing ENTER key.

2.1.9 Dial test mode

The mode is used to inspect whether dialing is accurate in two kinds of
dial modes or not. All data which can be dialed in this mode are auto­matically called up in both PB and DP mode.

When this mode is activated, the following operations will be automati­cally executed to their ends. Whenever the dialed content is right or
not is judged with the external instrument which is connected to the
line cable.

1. After pressing [ENTER] key, the CML relay is turned on, and the
following numbers are dialed in the PB mode.

“1”, “2”, “3”, “4”, “5”, “6”, “7”, “8”, “9”, “ “, “0”, “#”

2. And the following numbers are dialed in the DP mode.

“1”, “5”, “9”, “0”

3. After dialing, the CML relay is turned off.

2.1.12 Gear change mode

The gear to drive ADF and flatbed mechanism will be aging continu­ously and the number of switching will appear on the LCD.

1. Operation

DIAL TEST

123456789 #

[ENTER]Key

1590

Go to Auto Feeder Mode

2.1.10 Auto feeder mode

Inserting and discharging the document can check the auto feeder.

The information of document sensor (A4 sensor) and ORG sensor is
displayed when the documents are inserted to the Auto Feeder.

1. Operation

AUTO FEEDER

[ENTER]Key

300 MONO

[>] Key

600 MONO

[>] Key

300 COLOR

[>] Key

600 COLOR

without documents

()

A4 (A4 )

with documents

Feeding documents will start
by pres sing ENTER key.

A4 (A4 ORG)

2. Press [STOP] key to exit the mode.

2.1.11 Flash memory test

The Flash memory is checked.

No. Flash memory Alarm Buzzer Remarks

1 NOR-Flash 1 time <Long sound>

2. Note

ADF and FLATBED counter will be 0 over 65535.

Press [STOP] key to exit the mode.

2.1.13 Flatbed aging

Scanner motor will be driven based on the motor speed for each reso­lution. By pressing the [>] key or the [<] key, you can select the motor
speed preliminary.

1. Operation

FLASHM EMORY

Note: If this is excessively repeated, it will shorten the life of the Flash
memory.

NOW CHECKING

FLASH OK

[ENTER]Key

When an error occurs, the alarm will sound.

End

2. Press [STOP] key to exit the mode.

2 – 10

3. Print diagnosis

1

2

3

4

5

6

7

8

9

3.1. Single print

In this mode, a sheet with selected pattern is printed.

Printing size depends on Paper Size setting in Common Setting.

AM-900U

[>]Key

2: ALL WHITE

[>]Key

8: GENERAL CHART

[>]Key

[>]Key

3: ALL BLACK

[>]Key

4: AREA PATTERN

[>]Key

5: STRIPE PATTERN

[>]Key

6: H-TONEPATTERN

[>]Key

7: PHIL CHART

SINGLE PRINT

[ENTER]Key

1: CHECK PATTERN

[>]Key

11: IDBG CHART

[>]Key

10: SG CHRAT

[>]Key

9: 5% CHART

Select the desired pattern with the [>] key and [<] key and press the
[ENTER] key.

1: Check Pattern : same as Figure 1
2: All White pattern : Not printed
3: All Black pattern : Printed with black within print area
4: Area pattern : Frame line is printed within print area
5: Stripe pattern : Lateral stripe (Black 2 lines and White 2 lines)
6: Halftone pattern : same as Figure 3
7: Phil chart : PHIL CHART pattern
8: General chart
9: 5 % chart
10: SG chart
11: IDBG chart

(a) Area pattern

It prints 30 mm long per a pattern.

1: Full Black pattern
2: Halftone 2 pattern (The Figure 2 is repeated.)
3: Halftone 1 pattern (The Figure 3 is repeated.)
4: Mesh point pattern (The Figure 4 is repeated.)
5: Longitudinal stripe
2 pattern
6: Lateral stripe

(Black 2 dots and White 2 dots are repeated in
the line.)

(Black 2 lines and White 2 lines are repeated.)
2 pattern
7: Lateral stripe

(Black 1 line and White 1 line are repeated.)
1 pattern
8: Full White pattern

9: Full Black pattern

Figure 1 Check Pattern

Figure 2 Halftone 2 Pattern

Figure 3 Halftone 1 Pattern

Figure 4 Mesh point Pattern

2 – 11

AM-900U

COPY AGING

[ENTER]Key

Start aging

CYCLE=000(s)

CYCLE=000(m)

Enter the cycle and press the [ENTER] key.

COUNT=0000(time)

Enter the counter and press the [ENTER] key.

PAGE=000(sheet)

Enter a number of pages and press the [ENTER] key.

[>]Key

LIFE MODE

[ENTER]Key

1: LIFE SETMODE

2: LIFE CLEAR

[>]Key

[ENTER]Key

0000000000

0000000000

0000000000

0000000000

[ENTER]Key

1: SCAN(ADF)

3: PRINT

4: DRUM

5: TONER PAGE

6: TONER DOTCOUNT

LIFE MODE

[ENTER]Key

[ENTER]Key

[ENTER]Key

[ENTER]Key

cursor position

[>]Key

[>]Key

[>]Key

[>]Key

[>]Key

0000000000

0000000000

2: SCAN(FB)

[ENTER]Key

[>]Key

3.2. Continuous print

This mode is used for print aging.

Select the desired pattern and input cycle, counter, pages for aging.

Printing size depends on Paper Size setting in Common Setting.

CONTINUOUS PRINT

[ENTER]Key

1: CHECK PATTERN

[>]Key

11: IDBG CHART

[>]Key

10: SG CHRAT

[>]Key

9: 5% CHART

Select the desired pattern with the [>]key and [<]key and press the [ENTER] key.

CYCLE=000(s)

Enter the cycle and press the [ENTER] key.

COUNT=0000(time)

Enter the counter and press the [ENTER] key.

PAGE=000(sheet)

Enter a number of pages and press the [ENTER] key.

Start aging

2: ALL WHITE

[>]Key

8: GENERAL CHART

[>]Key

[>]Key

CYCLE=000(m)

1. Printing pattern

3: ALL BLACK

[>]Key

4: AREA PATTERN

5: STRIP PATTERN

6: H-TONE PATTERN

7: PHIL CHART

[>]Key

[>]Key

[>]Key

[>]Key

[>]Key

3.3. Copy aging

This mode is used for COPY Aging. The document on the flatbed or
ADF will be scanned at the beginning of each cycle and printed it. The
meaning of “CYCLE”, “COUNT” and “PAGE” are same as the case
“CONTINUOUS PRINT”.

Printing size depends on Paper Size setting in Common Setting.

3.4. Life mode

This mode is used to set the life counter of the printer and the counter
of the scanner at desired values and to clear them.

3.4.1 Life set mode

The values of life counter can be set in this mode.

1. Enter life set mode.

1: Check Pattern : same as Figure 1
2: All White pattern : Not printed
3: All Black pattern : Printed with black within print area
4: Area pattern : Frame line is printed within print area
5: Stripe pattern : Lateral stripe (Black 2 lines and White 2 lines)
6: Halftone pattern : same as Figure 3
7: Phil chart : PHIL CHART pattern
8: General pattern
9: 5 % chart
10: SG chart
11: IDBG chart

2. Printing interval [CYCLE]: The time from printing end to next print-

ing start.

Input Range: 001 to 999 seconds or 001 to 999 minutes.

3. Repeat printing [COUNT]: The number of printing cycle.

Input Range: 0001 to 9999 times.

4. Printing pages [PAGE]: The printing pages in one cycle of printing.

Input Range: 001 to 999 pages.

2. The cursor blinks at the top data. Four counters can be selected.
Select the desired counter and input the counter value of 10 digits
using the numeric keys. Pressing the [ENTER] key changed the
counter value.

Note: Toner page counter cannot be changed.

Caution: These counters are not cleared after memory clear mode

is executed. If it is necessary to execute the memory clear mode on
repairing the PWB, these life counters should be set again at the
same time.

2 – 12

TRAY TEMP.

ON temp.=190 deg

OFF temp.=190 deg

FEED temp.=190 deg

TIME=10(s)

[ENTER]Key

[>]Key

[>]Key

[>]Key

[>]Key

Input temperature using the numeric keys

Input temperature using the numeric keys

Input temperature using the numeric keys

Input temperature using the numeric keys

3.4.2 Life clear mode

This mode is used for clearing life counters.

2: LIFE CLEAR

[ENTER]Key

1: LIFE CLEAR ALL

[>]Key

2: LIFE CLR EACH

[>]Key

(a)[ENTER]Key

(b)[ENTER]Key

1: SCAN(ADF)

2: SCAN(FB)

3: PRINT

4: DRUM

5: TONER

[>]Key

LI FE CLE AR

[>]Key

[>]Key

[>]Key

[>]Key

[ENTER]Key

LI FE CLE AR

[ENTER]Key

LI FE CLE AR

[ENTER]Key

LI FE CLE AR

[ENTER]Key

LI FE CLE AR

[ENTER]Key

LI FE CLE AR

(a) Life all clear

Press the [ENTER] key, and the life counters of the printer and the life
counter of the scanner are set to 0.

Note: The value for Top void is not cleared.

(b) Life each clear

This mode is used to respectively clear the life counter of the printer
and the counter of the scanner. Select the desired counter and press
[ENTER] key.

Note: If “5: TONER” is executed, both “TONER PAGE” and “TONER
DOTCOUNT” are cleared.

3.5. Top void adjust

This mode is used for adjusting the top margin for printing.

Input range: [-1~06](mm)

1. Press the [ENTER] key and change the adjusting value using the
“>” key and the “<“ key.

TOP VOID ADJUST

[ENTER]Key

TOP VOID= 04(mm)

Adjust the value with the "<" the or the ">" ke y and press the [ENTER] key.

3.6. Print adjust

This mode is used to set some values about the printer.

PRINT ADJUST

[ENTER]Key

FAN MD_TIME SET TRAY TEMP.

[>]Key

[>]Key

PARAMETERLIST

[>]Key

[>]Key

BYPASS TEMP.

[>] Ke y

FLICKER ADJUST

AM-900U

3.6.1 Fan MD time set

This mode is used to set the driving time of the fan motor after stop­ping the main motor.

[ENTER]Key

FAN MD_TIME SET

• Default value: 02

• Input Range: MIN: 00, MAX: 63

• Unit: Minute

After entering the value, the Printer Adjust mode ends and the next
mode is displayed.

3.6.2 Tray temp.

This mode is used to set the temperature of fixing when printing from
the standard tray.

1. ON TEMP.

The temperature to start turning on the heater.

• Default value: 190

• Range: MIN: 170, MAX: 233

• Unit: Centigrade

2. OFF TEMP.

The temperature to start turning off the heater.

• Default value: 190

• Range: MIN: 170, MAX: 233

• Unit: Centigrade

3. FEED TEMP.

The temperature to start feeding the paper.

• Default value: 190

• Range: MIN: 170, MAX: 233

• Unit: Centigrade

4. TIME

Warming up time after reaching the temperature that the printing
can be done.

• Default value: 10

• Range: MIN: 10, MAX: 63

• Unit: Second

FAN MD_TIME( 02 )

Cursor position

2 – 13

AM-900U

TEST MODE

[ENTER]Key

1: MOTOR AGING 2: CHARGER ADJUST

[>]Key

[>]Key

3: PAPER FEED

[>]Key

5: PRINT SIZE

[>]Key

4: COM TEST

[>]Key

1: MOTOR AGING

[ENTER]Key

HT 1: ON 2: OFF

MM_AGING: HT_ON

MM_AGING: HT_OFF

[1]Key

[2]Key

2: CHARGER ADJUST

[ENTER]Key

NOW ADJUSTING

3: PAPER FEED

[ENTER]Key

NOW AGING

3.6.3 Bypass temp.

This mode is used to set the temperature of fixing when printing from
the bypass tray.

BYPASS TEMP.

[ENTER]Key

ON temp.=200 deg

[>]Key

OFF temp.=200 deg

[>]Key

FEED temp.=200 deg

[>]Key

TIME=10(s)

[>]Key

1. ON TEMP.

The temperature to start turning on the heater.

• Default value: 200

• Range: MIN: 170, MAX: 233

• Unit: Centigrade

2. OFF TEMP.

The temperature to start turning off the heater.

• Default value: 200

• Range: MIN: 170, MAX: 233

• Unit: Centigrade

3. FEED TEMP.

The temperature to start feeding the paper.

• Default value: 200

• Range: MIN: 170, MAX: 233

• Unit: Centigrade

4. TIME

Warming up time after reaching the temperature that the printing
can be done.

• Default value: 10

• Range: MIN: 10, MAX: 63

• Unit: Second

3.6.4 Flicker adjust

This mode is specified the number of table for the countermeasures of
“FLICKER”.

FLICKER ADJUST

Input temperature using the numeric keys

Input temperature using the numeric keys

Input temperature using the numeric keys

Input temperature using the numeric keys

[ENT ER ]K ey

FLICKER NO.=06

3.7. Test mode

This mode is used for printer aging on the two modes.

3.7.1 Motor aging

1. The motor aging starts with heater on or with heater off.

2. To exit the aging, press [STOP] key.

3.7.2 Charger adjust

This mode is used to check the high-pressure control.

1. Operation

1. Press the [ENTER] key to operate the mode.

2. Press the [STOP] key to exit this mode.

3.7.3 Paper feed

This mode is used to check Mechanical Controller in the High speed
mode.

Note: This mode is not used actual printing.

1. Operation

1. Press the [ENTER] key to operate the mode.

2. Press the [STOP] key to exit this mode.

• Default value: 06

• Input Range: MIN: 00, MAX: 63

• Unit: -

3.6.5 Parameter list

Printing the parameter for fixing.

PARAMETER LIST

[ENT ER ]K ey

PRINTING

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