sharp UXB20U, UX-B20, UX-B25 Service Manual

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Page 1

UX-B20U/UX-B20C/B25C

SERVICE MANUAL

No. 00ZUXB20U/SME

FACSIMILE

UX-B20

Illustration: UX-B20U

CHAPTER 1. GENERAL DESCRIPTION

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

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

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

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

[5] Quick setup guide ........................................ 1-10

[6] Quick reference guide.................................. 1-11

CHAPTER 2. ADJUSTMENTS

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

[2] Diagnostics and service soft switch ............... 2-2

[3] Troubleshooting ........................................... 2-23

[4] Error code table............................................ 2-24

CHAPTER 3. MECHANISM BLOCKS

[1] General description ........................................ 3-1

[2] Ink jet printer .................................................. 3-3

[3] Disassembly and assembly procedures......... 3-6

CHAPTER 4. DIAGRAMS

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

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

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

MODEL

UX-B20 U U.S.A. UX-B20/B25 C Canada

CONTENTS

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

[3] Circuit description of LIU PWB .................... 5-15

[4] Circuit description of power supply PWB......5-17

[5] Circuit description of CIS unit ......................5-17

CHAPTER 6. CIRCUIT SCHEMATICS AND PARTS LAYOUT

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

[2] LIU PWB circuit ........................................... 6-11

[3] Power Supply PWB circuit...........................6-16

[4] Operation Panel PWB circuit.......................6-18

[5] Ink PWB circuit ............................................6-21

CHAPTER 7. OPERATION FLOWCHART

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

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

CHAPTER 8. OTHER

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

[2] Changing the record paper size ....................8-4

[3] Rewriting version up the FLASH ROM ..........8-5

Parts Guide

UX-B25

MODEL SELECTION CODE DESTINATION

CHAPTER 5. CIRCUIT DESCRIPTION

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

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

This document has been published to be used

SHARP CORPORATION

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

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UX-B20U/UX-B20C/B25C

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FAXUX-B20U/UX-B20C/B25CService ManualService ManualMarketE

CHAPTER 1. GENERAL DESCRIPTION

[1] Specifications

UX-B20U/UX-B20C/B25C

Print cartridge yield*: (at 4% coverage**)

Paper tray capacity:

Recording system: Print resolution: Effective printing width: Memory size*: Modem speed:

Transmission time*: Compatibility: Compression scheme: Automatic dialing: Telephone function: Applicable telephone line: Reception modes: Automatic document feeder:

Initial cartridge Quality mode OFF: Approx. 300 letter pages Quality mode ON: Approx. 200 letter pages Replacement cartridge: SHARP

UX-C70B

Quality mode OFF: Approx. 600 letter pages Quality mode ON: Approx. 400 letter pages Letter: Approx. 100 sheets (20-lb.copier paper at room temperature; maximum stack height should not be higher than the line on the tray) Legal: 10 sheets Recommended paper weight: 20-lb. Copy Bond Thermal inkjet 600 x 600 dpi

8.0" (203 mm) max. 448 KB (approx. 24 average pages) 9,600 bps with auto fallback to lower speeds Approx. 15 seconds ITU-T (CCITT) G3 mode MR, MH, MMR 30 numbers Yes (cannot be used if power fails) Public switched telephone network TEL/FAX Letter/A4: 10 sheets max. (20 lb. paper) Legal: 5 sheets max.

Input document size:

Effective scanning width: Scanning resolution:

Halftone (grayscale): Contrast control: Copy function: Display: Power requirements: Power consumption:

Operating temperature: Humidity: Dimensions (without attachments):

Weight (without attachments):

*Quality mode is initially turned on. To turn off Quality mode. **Based on Sharp Standard Chart at standard resolution, excluding time for protocol signals (i.e., ITU-T phase C time only).

Automatic feeding:

Width: 5.8 to 8.5" (148 to 216 mm) Length(10 sheets): 5.5 to 11" (140 to 279 mm) Length(5 sheets): 5.5 to 14" (140 to 356 mm)

Manual feeding:

Width: 5.8 to 8.5" (148 to 216 mm) Length: 5.5 to 23.6" (140 to 600 mm)

8.3" (210 mm) max. Horizontal: 203 pixels/inch (8 dots/ mm) Vertical: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) 64 levels Automatic/Dark selectable Single / Multi (99 copies/page) 16-digit LCD display 120 V AC, 60 Hz Stand-by: 4.5 W Maximum: 30 W 60 - 90°F (15 - 32°C) 25 - 80 % RH Width: 13.9" (354 mm) Depth: 9.7" (247 mm) Height: 5.4" (138 mm)

Approx. 7.0 lbs. (3.2 kg)

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.

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UX-B20U/UX-B20C/B25C

[2] Operation panel

RESOLUTION/

8 9

RECEPTION

INK

Illustration: UX-B20U

1. Display

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

2. FLASH key

This key is used for Call Waiting and other special service that requires subscription from your phone company. Your phone company will provide you with details on how to use the key.

3. RESOLUTION / RECEPTION MODE key

When a document is in the feeder, press this key to adjust the resolution for faxing or copying. At any other time, press this key to select the reception mode (an arrow in the display will point to the currently selected reception mode).

4. INK key

Press this key before installing or replacing the print cartridge to move the print cartridge holder to the replacement position.

5. Arrow keys

Use these keys to scroll through and select setting, and to search for auto-dial numbers.

6. FUNCTION key

Press this key to followed by the arrow keys select special functions and settings.

7. Number key

Use these keys to dial numbers, and enter numbers and letters when storing auto-dial numbers.

8. POLL key

Press this key after dialing another fax machine to receive a document (previously loaded in the other machine's feeder) without assistance from the operator of the other machine.

9. HOLD key

Press this key to put the other party on hold during a phone conversation.

10. SPEAKER key

Press this key to listen to the line and fax tones through the speaker when faxing a document.

11. STOP key

Press this key to cancel operations before they are completed.

12. START/MEMORY key

Press this key after dialing to begin fax transmission. Press this key before dialing to send a fax through memory. The key can also be pressed in the date and time display to show the percentage of memory currently used.

13. COPY/HELP key

When a document is in the feeder, press this key to make a copy of a document. At any other time, press this key to print

out the Help List, a quick reference guide to the operation of your fax machine.

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[3] Transmittable documents

1. Document Sizes

Normal size Width 148 - 216 mm

Length 140 - 279 mm

(Max.)

UX-B20U/UX-B20C/B25C

5. Automatic Document Feeder Capacity

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

Normal size: max. ADF 10 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.)

140mm

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 1sheet(Manual)

Paper weight 70 kg

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.

80 g/m

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

LGL : 1 sheets max.

70 kg ~ 135 kg

52 g/m

~ 157g/m

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

8.3” (210mm), 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.

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UX-B20U/UX-B20C/B25C

[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 60 - 90°F (15 - 32°C).

• The humidity should be between 25% and 80% (without condensation).

ELECTRICITY

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

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 RJ-11C single-line wall 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 RJ-11C single-line wall telephone 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) Open the print compartment cover.

3) Remove the tape.

4) Close the print compartment cover and then the operation panel.

2. Removing the packing tape

1) Open the operation panel.

3. Connecting the handset

Connect the handset as shown and place it on the handset rest.

• The ends of the handset cord are identical, so they will go into either jack.

• Make sure the handset cord goes into the jack marked with a handset symbol on the side of the machine!

• Use the handset to make ordinary phone calls, or to transmit and receive faxes manually.

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4. Attaching the paper tray

1) Attach the paper tray.

UX-B20U/UX-B20C/B25C

2) Insert the stack of paper into the tray, PRINT SIDE UP.

• If paper remains in the tray, take it out and combine it into a single stack with the new paper.

• Be sure to load the paper so that printing takes place on the print side of the paper. Printing on the reverse side may result in poor print quality.

• GENTLY LOAD PAPER INTO THE PAPER TRAY.

• DO NOT FORCE IT DOWN INTO THE FEED SLOT.

The stack should not be higher than this line.

2) Attach the paper tray extension.

Click!

5. Loading printing paper

You can load letter or legal size paper in the paper tray. Recommended paper weight is 20-lb. Copy Bond. The maximum number of sheets is as follows:

Letter size: Approx. 100 sheets (20-lb. copier paper at room temperature; maximum stack height should not be higher than the line on the tray)

Legal size: 10 sheets (20-lb. copier paper at room temperature)

1) Fan the paper, and then tap the edge against a flat surface to even the stack. Make sure the stack edges are even.

Note: Do not use paper that has already been printed on, or paper that is curled.

6. Connecting the power cord

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

Caution!

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

• Make sure you have removed all of the packing tape before plugging in the power cord. Plugging in the power cord without doing so may damage the machine.

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

• “CHECK CARTRIDGE” normally appears in the display the first time you plug in the machine. This message appears until you install the print cartridge.

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

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UX-B20U/UX-B20C/B25C

Gold contact area

Cable

7. Installing the print cartridge

Follow these steps to install or replace the print cartridge.

• When replacing the print cartridge, be sure to use a SHARP UX- C70B cartridge.

Print cartridge yield (at 4% coverage)

Initial cartridge

Quality mode OFF: Quality mode ON

Replacement cartridge (SHARP UX-C70B)

Quality mode OFF: Quality mode ON

Quality mode is initially turned on. To turn off Quality mode, see page 1-8.

Caution! Do not open the print compartment cover or insert your hand in the machine while it is printing.

Note: Keep print cartridges sealed in their packages until you are ready to install them. It is recommended that you do not use a cartridge that has been left unused for a long time after opening, as the print quality may be considerably degraded.

• Make sure the machine’s power cord is plugged in and paper is laded before installing or replacing the print cartridge.

• If a document is inserted in the feeder, remove the document before installing or replacing the print cartridge.

Approx. 300 letter pages

: Approx. 200 letter pages

Approx. 600 letter pages

: Approx. 400 letter pages

3) Open the print compartment cover.

4) Remove only the tape from the new cartridge.

• Important: Make sure you remove all of the tape.

• CAUTION! DO NOT touch the gold contact area on the cartridge.

If PRINTER ERROR or PRINTER ERROR/CHECK PAPER appears... In the event that the display shows either of the above messages, you must clear the error before installing the print cartridge. The error can usually be cleared by pressing

, or if a paper jam has occurred, by removing the paper jam.

1) Press .

INK

• Make sure the handset is on its cradle. If the handset is not on

the cradle, pressing will have no effect.

INK

• The print cartridge holder moves to the cartridge replacement position.

Display:

REPLACE INK &

PRESS INK KEY

2) Open the operation panel.

5) Make sure the cartridge holder has moved slightly away from the right side of the compartment, and then pull the green lever and open the cartridge holder cover.

• If you are replacing the cartridge, remove the old cartridge. If

you are going to use the old cartridge again, place it in an airtight container.

• CAUTION! DO NOT touch the contact area inside the cartridge

holder, or pull on the cable that is connected to the cartridge holder.

Note: if the print compartment cover is left open for approximately 30 minutes with a cartridge installed, the cartridge will automatically return to its home position. To make the cartridge return to the cartridge

replacement position when this has happened, press .

INK

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6) Insert the new print cartridge into the cartridge holder.

1=NEW, 2=OLD

CHANGE CARTRIDGE

Display when "NEW" is selected:

OK: PRESS START

NEW CART. OK?

exa

UX-B20U/UX-B20C/B25C

10)Press to make the print cartridge holder return to its home

11)Press (NEW) if the cartridge you installed is new.

INK

position.

7) Place your index finger on the tab as shown and close the cartridge holder cover with your thumb. Make sure the cover clicks into place.

8) Close the print compartment cover.

Press (OLD) if the cartridge you installed is old.

START/

12)Press .

MEMORY

If you selected “OLD” in the previous step, this completes the installation procedure. (Note: If you find that print quality is not satisfactory after reinstalling the old cartridge, align the cartridge as explained.)

If you selected “NEW”, the display will show the alternating messages at right. Continue with the following steps to align the print cartridge.

Display when "NEW" is selected:

ALIGN CARTRIDGE

1=PRINT,2=SET

9) Close the operation panel, pressing down firmly to make sure it clicks into place.

Display:

REPLACE INK &

PRESS INK KEY

13)Press to print an alignment page. (To enter an alignment

value without printing an alignment page, press .)

14)In the alignment page that the machine prints, locate the line that comes closest to forming a completely straight line.

spas

mpl

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UX-B20U/UX-B20C/B25C

Press once and twice.

Press once and 4 times.

Press once.

Press to turn on high-quality fax

print, or to turn it off.

Press to return to the date and time display.

HQ COPY

The display briefly shows your selection, then:

1=YES, 2=NO

HQ FAX PRINT

Display:

PRINT SET-UP

15)Press the number keys to enter the number of the straightest line.

Example:

• If you make a mistake, press and then repeat the entry.

START/

16)Press .

• This completes the alignment procedure.

8. Setting the paper size

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

MEMORY

10. High-quality fax print setting (fast/slow printing

of faxes)

The high-quality fax print setting controls the speed at which faxes are printed. If you prefer a higher quality image at a slower printing speed, turn on this setting. If you prefer a faster printing speed over image quality, turn off the setting.

Note: This setting only affects the printing speed. It does not affect the amount of ink used.

• The high-quality fax print setting is initially turned off.

START/

MEMORY

Display:

PRINT SET-UP

PAPER SIZE SET

1=LETTER,2=LEGAL

The display briefly shows your selection, then:

COPY CUT-OFF

ADD PAPER &

PRESS START KEY

Press once and twice.

Press once and once.

Press once.

Select the paper size:

LETTER: LEGAL:

Press to return to the date and time display.

Note: If at any time the display shows the alternating messages at right, check the printing paper. If the tray is empty, add paper. If there is paper in the tr ay, take it out

and then reinsert it. When you are finished, press

9. Quality mode (using more/less ink)

If you prefer a higher quality image when printing faxes and copies, turn on Quality mode. If you wish to use less ink or speed up ink drying time, turn off Quality mode.

• Quality mode is initially turned on.

11. Connecting the telephone line cord

Insert one end of the line cord into the jack on the back of the machine marked TEL. LINE. Insert the other end into a standard (RJ11C) single-line wall telephone jack.

Press once and twice.

Press once and 3 times.

Press once.

Press to turn on Quality mode, or

toturnitoff.

Press to return to the date and time display.

Display:

PRINT SET-UP

QUALITY MODE

1=YES, 2=NO

The display briefly shows your selection, then:

HQ FAX PRINT

1 – 8

Setting the dial mode

The fax 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 panel keys as follows:

Press once and 3 times.

Press once.

Select the dial mode:

TONE: PULSE:

Press to exit.

Display:

OPTION SETTING

DIAL MODE

1=TONE, 2=PULSE

The display briefly shows your selection, then:

DISTINCTIVE

Page 11

12. 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 pressing the START/MEMORY key. If the document doesn’t feed out, remove it as explained below.

Important:

Do not try to remove a jammed document without releasing it as explained below. This may damage the feeder mechanism.

1) Open the operation panel.

UX-B20U/UX-B20C/B25C

13. Clearing jammed printing paper

Gently pull the jammed paper out of the machine, taking care not to

tear it. After removing the jammed paper, press to clear the

error message (PAPER JAMMED) from the display.

• Normal operation cannot be resumed until you press to clear

the error message.

2) Gently and remove the document.

• Be careful not to tear the document.

3) Close the operation panel, pressing down firmly to make sure it clicks into place.

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UX-B20U/UX-B20C/B25C

[5] Quick setup guide

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 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.

Load paper.

1. Fan the paper.

1. Open the

operation panel.

Connect the handset.

2. Gently insert paper into the paper tray,

printsideup

The stack should not be higher than this line

Do not force paper down into the feed slot

2. Open the print compartment cover.

Connect the phone line cord to the

TEL. LINE jack and a wall jack.

3. Remove the packing tape.

1. Attach the paper tray.

4. Close the pr int compartment cover.

2. Attach the paper tray extension.

Insert horizontally and rotate up

If the tabs do not go into the holes, turn the extension over.

5. Close the operation panel.

Click!

Plug the power cord into a 120-V grounded outlet.

Note: If you are loading legal paper, see of the operation manual to change the paper size setting to LEGAL.

Install the Print C ar tridge.

1. Make sure the handset is on its cradle and then

INK

press .

The cartridge holder moves to the cartridge replacement position.

6. Insert the new pr int cartridge

into the cartridge holder.

10.a. Press to select NEW.

b. Pres s

c. Press

2. Open the operation panel.

START/

MEMORY

to print an alignment page.

3. Open the pr int

7. Place your index finger on t he tab and close the cartridge holder cover with your thumb.

ALIGN CARTRIDGE

1=PRINT,2=SET

4. Remove only the tape from the

compartment cover.

11.In the alignment page that the machine prints, locate the line that comes closest to forming a completely straight line. Enter the number of that line.

Example:

(If you make a mistake, press and

then repeat the entry.)

new cartridge. IMPORTANT:Makesureyou remove all of the tape.

5. Make sure the cartridge holder has moved slightly away from the right side of the compar tment, and then pull the green lever and open the cartridge holder cover.

Caution! Do not touch the gold contact area.

8. Close the print compartment cover and then the operation panel.

Do not pull on the cable or touch the gold contact area.

Cable

Gold contact area

INK

9. Press to make the car tridge

holder return to its home position.

Display:

CHANGE CARTRIDGE

1=NEW, 2=OLD

START/

12. Press .

MEMORY

1 – 10

Note: To enter your name and fax number and set the date and time so that they appear at the top of each fax you send, see page Chapter 1 of your operation manual.

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[6] Quick reference guide

SPACE =

UX-B20U/UX-B20C/B25C

3. Storing Auto Dial Numbers

1. Sending Faxes

Place your document (up to 10 pages) face down in the document feeder.

1.1. Normal Dialing

1. Lift the handset or press .

2. Dial the fax number.

3. Wait for the reception tone (if a person answers, ask them to press their Start key).

START/

4. Press .

1.2. Automatic Dialing

1. Press or until the desired destination appears in the

display.

MEMORY

1. Press once and twice.

2. Enter the full fax number.

START/

3. Press .

MEMORY

4. Enter a name by pressing number keys. (To enter two letters in

succession that require the same key, press after entering

the first letter.)

START/

5. Press and then .

MEMORY

START/

2. Press .

MEMORY

1.3. Direct Keypad Dialing

1. Dial the fax number.

START/

2. Press .

MEMORY

2. Receiving Faxes

RESOLUTION/

Press the until the arrow in the display points to the desired

reception mode.

FAX mode: The fax machine automatically answers and receives faxes.

TEL mode: Answer all calls (even faxes) by picking up the handset. To

begin fax reception, press .

RECEPTION

RESOLUTION/

RECEPTION

JAN-03 10:30

START/

MEMORY

TEL

FAX

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UX-B20U/UX-B20C/B25C

Press .

Press or to select the desired volume le vel.

• Press again to turn off the speaker.

Display:

SPEAKER: HIGH

SPEAKER: MIDDLE

SPEAKER: LOW

FAXUX-B20U/UX-B20C/B25CService ManualService ManualMarketE

CHAPTER 2. ADJUSTMENTS

[1] Adjustments

4. Settings

4.1. Dial mode selector

DIAL mode (Soft Switch No. SW-B4 Data No. 3)

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

CNPRG

CNPN

CNCIS

CNSP

LIU PWB

No. CNPW

+5V +5V

CNLIU

CNCRMT

CNPW

POWER SUPPLY PWB

Output Voltage limits

+5V 4.75V ~ 5.25V

+30V 27.0V ~ 33.0V

CNHEAD2

CNHEAD1

CNBKL

CNFDMT

CONTROL PWB

Connector

Pin No.

1 +30V 2 +30V 3MG

4MG 5DG 6DG 7 8

(step 1) Select "OPTION SETTING".

KEY : FUNCTION

DISPLAY: OPTION SETTING FINE PRIORITY

(step 2) Select "DIAL MODE".

KEY: Push until DIAL MODE is

DISPLAY: DIAL MODE 1=TONE, 2=PULSE

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

KEY: 1

DISPLAY: TONE SELECTED

KEY: 2

DISPLAY: PULSE SELECTED

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

KEY:

indicated because the number of

's changes by the model.

5. Volume adjustments

You can adjust the volume of the speaker, handset, and ringer using the UP and DOWN arrow keys.

5.1. Speaker

3. IC protectors replacement

ICPs (IC Protectors) are installed to protect the motor driver circuit. ICPs protect various ICs and electronic circuits from an overcurrent condition.

The location of ICPs are shown below:

FU101

CNPW

FU100

1) FU100 (KAB5002) is installed in order to protect IC's from an overcurrent generated in the motor drive circuit. If FU100 is open, replace it with a new one.

2) FU101 (KAB3202) is installed in order to protect IC's from an overcurrent generated in the motor drive circuit. If FU101 is open, replace it with a new one.

CNCRMT

CNFDMT

CNHEAD2

CNHEAD1

CNPN

CNBKL

CONTROL PWB

(TOP SIDE)

CNSP

CNPRG

CNCIS

CNLIU

2 – 1

5.2. Handset

Press or to select the desired volume le vel.

(Make sure has not been pressed,

the handset is not lifted, and a document is not loaded in the feeder.)

• The ringer will ring once at the selected

If yo u selected RINGER: OFF OK ? to

turn off the ringer , press .

5.3. Ringer

When talking thr ough the handset,

press or to select the desired volume le vel.

•

level.

START/

MEMORY

Note: The volume reverts to MIDDLE each time you replace the handset.

Display:

RINGER: HIGH

RINGER: MIDDLE

RINGER: LOW

RINGER: OFF OK ?

Display:

RECEIVER: HIGH

RECEIVER: MIDDLE

RECEIVER: LOW

Page 15

UX-B20U/UX-B20C/B25C

[2] Diagnostics and service soft switch

1. Entering the diagnostic mode

Press FUNC → 9 → → 8 → # → 7 , and the following display will appear.

ROM Ver. TC25 or TC44

TC25 (UX-B20U)

TC44 (UX-B20C/UX-B25C)

Then press the START key. Select the desired item with the UP key or the DOWN key or select with the rapid key. Enter the mode with the START key.

(Diag· specifications)

After 2 sec: DIAG MODE

FUNC

If the diag mode cannot be set, repeat the diag mode operation, performing the following operation. After the power is turned on and "WAIT A MOMENT" is indicated, press the STOP key.

9 8 7

TC25 or TC44

"Power ON"

STOP

DIAG MODE

KEY

STARTSoft switch mode

STARTROM & RAM check

STARTAging mode

STARTPanel key test

STARTCheck pattern

STARTSignal send mode

START/

MEMORY

START

KEY

START

In relation with the process response (request from Production Engineering) "WAIT A MOMENT" clock indication may appear depending on STOP key timing. If the STOP key is held down, "MEMORY CLEAR?" appears.

Entry data rcv.

Entry data send

Auto feeder mode

Shading mode

Memory clear

2. Diagnostic items

ITEM No. Contents Function

1 SOFT SWITCH MODE Soft switches are displayed and changed. List can be output.

2 ROM & RAM CHECK ROM sum-check and RAM is matched. Result list is output.

3 AGING MODE 10 sheets of check patterns are output every 5 minutes per sheet.

4 PANEL KEY TEST Panel keys are tested. Result list is output.

5 CHECK PATTERN Check pattern is output.

6 SIGNAL SEND MODE Various signals of FAX communication are output.

7 MEMORY CLEAR Back-up memory is cleared, and is set at delivery.

8 SHADING MODE Shading compensation is performed in this mode.

9 AUTO FEEDER MODE Insertion and discharge of document are tested.

10 ENTRY DATA SEND Registered content is sent.

11 ENTRY DATA RECEIVE Registered content is received, and its list is output.

2 – 2

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UX-B20U/UX-B20C/B25C

3. Diagnostic items description

3.1. Soft switch mode

Used to change the soft switch settings. The soft switch which is stored internally is set by using the keys. The available soft switches are SW-A1 to SW-P7. The content of soft switches is shown in Soft switch description. The contents are set to factory default settings.

3.2. ROM & RAM check

ROM executes the sum check, and RAM executes the matching test.

The result will be notified with the number of short sounds of the buzzer as well as by printing the ROM & RAM check list.

Number of short sounds of buzzer 0 → No error 1 → FAX engine ROM error 2 → RAM error

(4Kbytes SRAM or 512Kbytes DRAM)

3.3. Aging mode

The check pattern will be printed sheet by sheet. This operation will be executed at a rate of one sheet per 5 minutes, and will be ended at a total of 10 sheets.

3.4. Panel key test

This mode is used to check whether each key operates properly. Press the key on the operation panel, and the key will be displayed on the LCD. Therefore, press all keys. At this time, finally press the STOP key. When the STOP key is pressed, the keys that are not judged as "pressed" will be printed on the result list.

• LED part of the contact image sensor (CIS) is kept on during the term from when "START" of the panel test mode to end with the STOP key.

3.5. Check pattern

Check patterns are printed on one sheet. Printing performance:The following 4 items are checked.

• Print area:Checks that the print area is reserved.

• Nozzles:When checking the nozzle, make sure at least 1 line is printed in each block: all the blocks of horizontal black bars and the black line patterns in (B) and (C) ((B):16 patterns, (C):13 patterns). (Note: If the nozzle (A) is not spraying properly, checking the area (B) and (C) may be difficult (or may not be printed at all). In this case, print again.

• Vertical align:Checks that the straight vertical line is drawn instead of crooked line.

• Skew:Checks the skew of the recording paper.

Detailed of check patterns (1)Top skew (2)Nozzle test (3)Vertical lines (4)Bottom skew (5)Top margin (6)Left margin (7)Bottom margin

(6)

(5)

(A) (B)

(C)

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

(1)

(2)

(3)

3.6. Signal send mode

This mode is used to send various signals to the circuit during FAX communication. Every push of START key sends a signal in the following sequence. Moreover, the signal sound is also output to the speaker when the line monitor of the soft switch is on.

[1] No signals [2] 9600BPS (V.29) [3] 7200BPS (V.29) [4] 4800BPS (V.27ter) [5] 2400BPS (V.27ter) [6] 300BPS (FLAG) [7] 2100Hz (CED) [8] 1100Hz (CNG)

3.7. Memory clear

This mode is used to clear the backup memory and reset to the default settings.

3.8. Shading mode

The mode is used for the shading compensation. For reading, set up the special original paper. (Refer to page 8-3) The compensation memorizes the reference data of white and black for reading. Moreover, the memorized data is not erased even if memory clear mode is executed.

3.9. Auto feeder mode

In this mode, a document is inserted and discharged to check the auto feed function.

After this mode is started, set a document, and the document feed will be automatically tested.

3.10. Entry data send

This mode is used to send the registered data to another machine and make the other machine copy the registered content.

Before sending in this mode, it is necessary to set the other machine at the entry data receive mode.

The following, information will be sent to the remote machine:

1. Telephone list data

2. Sender register data

3. Optional setting content

4. Soft switch content

5. Junk fax number

6. Recording setting list data

3.11. Entry data receive

In this mode, the registered data sent from the other machine is received and the received data is registered in the machine. When this mode is used for receiving, the other machine must be in the entry data send mode.

After receiving is completed, the following lists are printed.

1. Telephone list data

2. Sender register list (*)

3. Optional setting list (*)

4. Soft switch content

5. Junk fax number list (*)

6. Recording setting list data (*)

(*): Refer to SETUP LIST

(7)

(4)

2 – 3

Page 17

UX-B20U/UX-B20C/B25C

4. Entering the printer diagnostic mode

Press FUNC 9 8 # 6 , and the following display will appear.

PRINT DIAG MODE

Then press the START key. Select the desired item with the up key or the down key or select with the rapid key. Enter the mode with the START key.

(Diag· specifications)

FUNC

9 8 6

PRINT DIAG MODE

START

START4% DATA PRINT AGING

ASF AGING

ASF SKEW CHECK AGING

CROSS PATTERN

INITIAL CARTRIDGE DATA SETTING

IJP LIST MODE

PRINTER ERROR CHECK MODE

If the diagnostic mode cannot be set, repeat the diagnostic mode operation, performing the following operation. After the power is turned on and "WAIT A MOMENT" is indicated, press the STOP key.

"Power ON"

STOP

KEY

START

START/

MEMORY

START

KEY

In relation with the process response (request from Production Engineering) "WAITAMOMENT" clock indication may appear depending on STOP key timing. If the STOP key is held down, "MEMORY CLEAR?" appears.

5. Printer diagnostic items

Item No. Contents Function

1 4% DATA PRINT AGING 4% of printing data continue to be printed. 2 ASF AGING The feed of the paper is continued. 3 ASF SKEW CHECK AGING The frame pattern continues to be printed to check the inclination performance. 4 CROSS PATTERN The image data of the cross pattern to be printed. 5 INITIAL CARTRIDGE DATA SETTING It makes the dot counter the setting for the initial cartridge. 6 IJP LIST MODE The maintenance data is printed. 7 PRINTER ERROR CHECK MODE The cause of “PRINTER ERROR” message is displayed.

6. Printer diagnostic items description

6.1. 4% data print aging

This mode is the aging mode that prints the text pattern of 4%

6.2. ASF aging (all white)

This mode is the aging mode that tests the performance of the ASF function.

6.3. ASF skew check aging

This mode is the aging mode that tests the performance of the ASF function.

Detailed of check patterns

1. Top skew

2. Bottom skew

3. Top margin

4. Bottom margin

6.4. Cross pattern

This mode prints the test pattern that tests the performance of the printer.

6.5. Initial cartridge data setting

This mode makes the dot counter the setting for initial cartridge, and this mode resets the following counter.

1. Replacement counter of the cartridge

2. Paper jam counter

2 – 4

Page 18

UX-B20U/UX-B20C/B25C

6.6. IJP list mode

Maintenance data of the printer is output.

[Details of maintenance data]

Item Clear timing Update timing

Dot counter At the replacement cartridge After printing Page counter At the replacement cartridge After printing Number of head cleaning (Wiping of cartridge) At the initial cartridge setting At the maintenance Replacement counter of the cartridge At the initial cartridge setting At the replacement of cartridge Jam counter At the initial cartridge setting At every paper jam

6.7. Printer error check mode

The cause of “PRINTER ERROR” message is displayed.

[Details of Display]

Display Cause of “PRINTER ERROR” message

PRINTER ERR 01 Power on reset response was not received from printer. PRINTER ERR 02 Print data transfer from Printer interface ASIC to printer was not completed for 180 sec. PRINTER ERR 03 Cap position check of the carrier is failed. PRINTER ERR 04 Printing 1 page is not finished during 5 min. PRINTER ERR 05 Carrier moving from cartridge change position to cap position is failed. PRINTER ERR 06 Carrier moving to cartridge change position is failed. PRINTER ERR 07 Cartridge replacement is failed. PRINTER ERR 08 Cartridge ID check is failed. PRINTER ERR 09 Carrier was not reached to cap position for 60 sec after last printed page was exited. PRINTER ERR 10 Paper pick up is failed. PRINTER ERR 20 Carrier stall error. PRINTER ERR 21 Carrier stall error. PRINTER ERR 22 Carrier stall error. PRINTER ERR 23 Carrier stall error. PRINTER ERR 24 Printer head short error. PRINTER ERR 25 Printer head heater control is failed. PRINTER ERR 26 Print start position setting is abnormal.

2 – 5

Page 19

7. How to make soft switch setting

To enter the soft switch mode, press the following key entries in sequence.

UX-B20U/UX-B20C/B25C

Press

FUNCTION

9 8 7 STARTSTART

DATA No. 1 2 3 4 5 6 7 8

S F T SW-A1 = 00000000

S F T SW-A1 = 10000000

S F T SW-A2 = 00000000

S F T SW-P7 = 00000000

Press FUNCTION key.

Press key.

Bit1 - 8 are set.

Press key during setting.

Soft SW-A2 - SW-P7 are set.

To finish the settings halfway between SW-A1 and SW-P7, press the STOP key. In this case, the setting being done to the SW No. on display will be nullified while settings done to the preceding SW No. remain in effect.

When the COPY key is pressed, the contents of soft switches are printed.

START

The soft switch mode is terminated.

2 – 6

Page 20

UX-B20U/UX-B20C/B25C

8. Soft switch description

8.1. Soft switch

NO.

DATA

NO.

1 Protect from echo No Yes 0 2 Forced 4800 BPS reception Yes No 0 3 Footer print Yes No 0 4 Length limitation of copy/send/

receive

5 CSI transmission No transmitted Transmitted 0 6 DIS receive acknowledgement dur-

ing G3

7 Non-modulated carrier for V29

transmission modem

8 EOL detect timer 25sec 13sec 0

Modem speed No. 1 No.2 No. 3 No. 4

1 2 3 4

5 Sender’s information transmit No Yes 0 6 H2 mode No Yes 0 7 Communication error treatment in

RTN sending mode (reception)

8 CNG transmission No Yes 0

CED tone signal interval 1000ms 750ms 500ms 75ms 1 2

3 MR coding No Yes 0 4Reserved 0

5Reserved 0 6Reserved 0 7Reserved 0 8Reserved 0

Signal transmission level 0

1 2 3 4 5

ITEM

No limit Copy/send: 60 cm

Twice NSF : On ce

Yes No 0

V.29 9600bps 0 0 0 1

V.29 7200bps 0 0 1 1 V.27ter 4800bps 0 0 1 0 V.27ter 2400bps 0 0 0 0

No communication error Communication error 0

No. 1 1 1 0 0 No. 2 1 0 1 0

Switch setting and function Initial setting

10U/C

Receive: 1 m

DIS: Twice

Binary input

No.= 168421

12345

EX0 0111

eg. Signal transmission level is set to -7dBm.

Remarks

0 0 0 1

0 0

0 1 1 1

6 Protocol monitor (Error print) Printed at communication error Not printed 0 7 Protocol monitor Yes No 0 8 Line monitor Yes No 0

Digital line equalization setting (Reception)

1 2

Digital line equalization setting (Transmission)

3 4

Digital cable equalizer setting (Reception for Caller ID)

5 6

7 Error criterion 10 ~ 20% 5 ~ 10 % 0 8 Anti junk fax check Yes No 1

No. 1 1 0 No. 2 1 0

No. 3 1 0 No. 4 1 0

No. 5 1 0 No. 6 1 0

7.2km 0km

2 – 7

1 1

0 0

Page 21

UX-B20U/UX-B20C/B25C

NO.

DATA

NO.

1Reserved 0 2Reserved 0 3 Disconnect the line when DIS is

received in RX mode 4 Equalizer freeze control (MODEM) On Off 0 5 Equalizer freeze control 7200 BPS

only 6 CNG transmission in manual TX

mode 7 Initial compression scheme for

sharp fax in TX mode 8 Modem speed automatic fallback

when RX level is under -40dBm

Recall interval 0

1 2 3 4

Recall times 0

5 6 7 8

ITEM

No Yes 1

No Yes 0

Yes No 1

MR mode H2 mode 0

Yes No 0

Switch setting and function Initial setting

10U/C

Binary input

No.=8421

1234

EX0101

eg. Recall interval is set to 5 min.

Binary input

No.=8421

5678

EX0011

eg. Recall time is set to 3 times.

Remarks

1 0 1

0 1 1

1 Dial pausing (sec/pause) 4 sec 2 sec 0 2 Dial tone detection (before auto dial) No Yes 1 3Reserved 0 4 Busy tone detection (after auto dial) No Yes 0

Waiting time after dialing 5 6

7Reserved 0 8Reserved 0 1Reserved 0 2Reserved 0 3Reserved 0 4Reserved 0 5Reserved 0

Auto dial mode delay timer of before

line connect

6 7

8 Hold key Enable Disable 1

Auto dial mode delay timer of after

line connect

1 2

3 Dial mode Tone Pulse 1 OPTION 4Pulse → Tone change function by

key 5 Dial pulse make/break ratio (%) 40/60 33/67 1 6Reserved 0 7Reserved 0 8 Recalling fixed only one time when

dialing was unsuccessful without detecting busy tone signal

No. 50011 No. 60101

No. 60011 No. 70101

No. 10011 No. 20101

Enable Disable 1

Yes No 1

45 sec 55 sec 90 sec 140 sec

0 0

0 sec 1.5 sec 3.0 sec 4.5 sec

0 0

1.7 sec 3.0 sec 3.6 sec 4.0 sec 0 0

2 – 8

Page 22

UX-B20U/UX-B20C/B25C

NO.

DATA

NO.

DTMF signal transmission level

(Low)

2 3 4 5

6Reserved 0 7Reserved 0 8Reserved 0

DTMF signal transmission level

(High)

2 3 4 5

6Reserved 0 7Reserved 0 8Reserved 0

Reading slice (Binary) Factory

1 2

Reading slice (Half tone) Factory

3 4

5 Line density selection Fine Standard 0 OPTION 6Reserved 0 7 MTF correction in half tone mode No Yes 0 8Reserved 0

Number of rings for auto receive 0

1 2 3 4

5 Automatic switching manual to auto

receive mode

6Reserved 0

Cl detect frequency As PTT 11.5Hz 13.0Hz 20.0Hz

7 8

Distinctive ringing setting (PATTERN

4 and 5 are for CANADA only)

2 3

4Reserved 0 5 Caller ID function Yes No 0 OPTION 6 Caller ID detect during CI off All times Only first 0 7Reserved 0 8Reserved 0

ITEM

No. 10101 No. 20011

No. 30101 No. 40011

Reception after 5 rings No reception 0

No. 70011 No. 80101

OFF 000 STANDARD 0 0 1 PATT ERN1 0 1 0 PATT ERN2 0 1 1 PATT ERN3 1 0 0 PATT ERN4 1 0 1 PATT ERN5 1 1 0

Switch setting and function Initial setting

10U/C

Binary input

No.= 168421

1 2 3 4 5(nx0.5dBm)

EX0 0110

eg. Signal transmission level is set to -3dBm.

Binary input

No.= 168421

1 2 3 4 5(nx0.5dBm)

EX0 0011

eg. Signal transmission level is set to -1.5dBm.

Light Dark Darker

setting

Light Dark Darker

setting

Binary input

No.=8421

1234

EX0100

eg. Number of rings for auto receive is set to 4times.

No. 1 No. 2 No. 3 0

in dark

0 1 1 0

0 0 0 1 1

0 0

1 0 0

0 0

Remarks

OPTION

2 – 9

Page 23

UX-B20U/UX-B20C/B25C

NO.

DATA

NO.

Cl off detection timer (0-1550ms set-

ting by 50ms step)

2 3 4 5

6Reserved 0 7Reserved 0 8Reserved 0 1Reserved 0 2Reserved 0 3Reserved 0 4Reserved 0

5Reserved 0 6Reserved 0 7Reserved 0 8Reserved 0 1Reserved 0 2Reserved 0 3Reserved 0 4Reserved 0

5Reserved 0 6Reserved 0 7Reserved 0 8Reserved 0

DTMF detection time 50ms 80ms 100ms 120ms 1 2

3 Protection of remote reception

(5 ) detect 4 Remote reception with GE

telephone

Remote operation code figure by

external TEL (0~9)

6 7 8

ITEM

No. 10011 No. 20101

Yes No 1

Compatible Not compatible 1

Switch setting and function Initial setting

10U/C

Binary input

No.= 168421

1 2 3 4 5(nx50ms)

EX0 1110

eg. CI signal OFF detect time is set to 700ms.

Binary input

No.=8421

5678

EX0101

eg. Remote operation code is set to 5 .

Remarks

0 1 1 1 0

0 0

0 1 0 1

2 – 10

Page 24

UX-B20U/UX-B20C/B25C

NO.

DATA

NO.

1 CNG detection in STAND-BY mode Yes No 1 OPTION 2Reserved 0 3Reserved 0

Number of CNG detect (STAND-BY

mode)

6Reserved 0 7Reserved 0 8Reserved 0 1Reserved 0 2Reserved 0 3Reserved 0 4Reserved 0

5Reserved 0 6Reserved 0 7Reserved 0 8Reserved 0 1Reserved 0 2Reserved 0 3Reserved 0 4Reserved 0

5Reserved 0 6Reserved 0 7Reserved 0 8Reserved 0

ITEM

No. 40011 No. 50101

Switch setting and function Initial setting

10U/C

1pulse 2pulses 3pulses 4pulses

0 1

Remarks

2 – 11

Page 25

UX-B20U/UX-B20C/B25C

NO.

DATA

NO.

1Reserved 0 2Reserved 0 3Reserved 0 4Reserved 0

5Reserved 0 6Reserved 0 7Reserved 0 8Reserved 0 1Reserved 0 2Reserved 0 3Reserved 0 4Reserved 0

5Reserved 0 6Reserved 0 7Reserved 0 8Reserved 0

ITEM

Switch setting and function Initial setting

10U/C

Remarks

2 – 12

Page 26

UX-B20U/UX-B20C/B25C

NO.

DATA

NO.

1 Reserved 0 2 Reserved 0 3 Sender’s phone number setting Cannot change Change allowed 0 4 Reserved 0 5 Reserved 0

6 Summer time setting No Yes 1 OPTION

Ringer volume Off Low Middle High 7 8

Speaker volume (3 stages) Low Low Middle High 1 2

3 Reserved 0

Handset receiver volume Low Low Middle High 4

6 Reserved 0 7 Reserved 0 8 Reserved 0 1 Reserved 0

Communication results printout

(Transaction report)

2 3 4

5 Reserved 0 6 Reserved 0 7 Reserved 0 8 Reserved 0 1 Reserved 0 2 Reserved 0 3 Reserved 0 4 Reserved 0 5 Reserved 0 6 Reserved 0 7 Reserved 0 8 Reserved 0 1 Reserved 0 2 Reserved 0 3 Reserved 0 4 Reserved 0 5 Cut off mode (COPY mode) Yes No 1 OPTION 6 A4 paper enable Enable Disable 0 7 LEGAL & LETTER paper enable Enable Disable 1 8 Reserved 0

Paper set size LETTER LEGAL A4

1 2 3 Automatic reduce of receive Auto 100 % 1 OPTION

4 Reserved 0 5 Reserved 0 6 Reserved 0 7 Reserved 0 8 Reserved 0

ITEM

No. 70011 No. 80101

No. 10011 No. 20101

No. 40011 No. 50101

No. 200001 No. 300110 No. 401010

No. 1 001 No. 2 010

Switch setting and function Initial setting

10U/C

1 0

E/T/M Send

only

Always No print Err only

1 0 0

0 0

Remarks

OPTION

2 – 13

Page 27

UX-B20U/UX-B20C/B25C

NO.

DATA

NO.

1Reserved 0 2Reserved 0 3Reserved 0 4Reserved 0

5Reserved 0 6Reserved 0 7Reserved 0 8Reserved 0 1Reserved 0 2Reserved 0 3Reserved 0 4Reserved 0

5Reserved 0 6Reserved 0 7Reserved 0 8Reserved 0

ITEM

Switch setting and function Initial setting

10U/C

Remarks

2 – 14

Page 28

UX-B20U/UX-B20C/B25C

NO.

DATA

NO.

1Reserved 0 2Reserved 0 3Reserved 0 4Reserved 0

5Reserved 0 6Reserved 0 7Reserved 0 8Reserved 0 1Reserved 0 2Reserved 0 3Reserved 0 4Reserved 0

5Reserved 0 6Reserved 0 7Reserved 0 8Reserved 0 1Reserved 0 2Reserved 1 3Reserved 1 4Reserved 0

5Reserved 1 6Reserved 1 7Reserved 1 8Reserved 1 1Reserved 0 2Reserved 0 3Reserved 0 4Reserved 0

5Reserved 0 6Reserved 0 7Reserved 0 8Reserved 0

ITEM

Switch setting and function Initial setting

10U/C

Remarks

2 – 15

Page 29

UX-B20U/UX-B20C/B25C

NO.

DATA

NO.

1 Reserved 0 2 Reserved 0 3 Reserved 0 4 Reserved 0

5 Reserved 0 6 Reserved 0 7 Reserved 0 8 Reserved 0 1 Reserved 0 2 Reserved 0 3 Reserved 0 4 Reserved 0

5 Reserved 0 6 Reserved 0 7 Reserved 0 8 Reserved 0 1 Ink save mode Yes No 0 OPTION 2 Half tone copy ink save mode print-

ing fixed 3 Reserved 0 4 Reserved 0

5 Reserved 0 6 Reserved 0 7 Reserved 0 8 Reserved 0 1 Reserved 0 2 Reserved 0 3 Reserved 0

End buzzer 3sec 1sec No beep 4

6 Key error/Communication error

beep 7 End beep (3sec) No beep Beep 0 OPTION 8 Key touch tone No beep Beep 0 OPTION

ITEM

Yes No 1

No. 4 001 No. 5 010

No beep Beep 0 OPTION

Switch setting and function Initial setting

10U/C

0 0

Remarks

2 – 16

Page 30

UX-B20U/UX-B20C/B25C

TX RX

CED

DIS

8.2. Soft switch function description

SW-A1 No. 1 Protect from echo

Used to protect from echo in reception.

SW-A1 No. 2 Forced 4800BPS reception

When line conditions warrant that receptions take place at 4800 BPS repeatedly.

It may improve the success of receptions by setting at 4800BPS.

This improves the receiving document quality and reduces handshake time due to fallback during training.

SW-A1 No. 3 Footer print

When set to "1", the date of reception, the sender machine No., and the page No. are automatically recorded at the end of reception.

SW-A1 No. 4 Length limitation of copy/send/receive

Used to set the maximum page length.

To avoid possible paper jam, the page length is normally limited to 0.6 meter for copy or transmit, and 1 meters for receive.

It is possible to set it to "No limit" to transmit a long document, such as a computer print form, etc. (In this case, the receiver must also be set to no limit.)

SW-A1 No. 5 CSI transmission

(CSI TRANSMISSION) is a switch to set whether the machine sends or does not send the signal (CSI signal) informing its own telephone No. to the remote fax machine when information is received. When "nonsending" is set, the telephone No. is not output on the remote transmitting machine if the remote transmitting machine has the function to display or print the telephone No. of receiving machine, using this CSI signal.

SW-A1 No. 6 DIS receive acknowledgment during G3 transmission

Used to make a choice of whether reception of DIS (NSF) is acknowledged after receiving two DISs (NSFs) or receiving one DIS (two NSFs).

It may be useful for overseas communication to avoid an echo suppression problem, if set to 1.

SW-A1 No. 7 Non-modulated carrier for V.29 transmission modem

Though transmission of a non-modulated carrier is not required for transmission by the V.29 modem according to the CCITT recommendation, it may be permitted to a send non-modulated carrier before the image signal to avoid an echo suppression problem. It may be useful for overseas communication to avoid an echo suppression problem, if set to 1.

SW-A1 No. 8 EOL (End Of Line) detect timer

Used to make a choice of whether to use the 25-second or 13-second timer for detection of EOL.

This is effective to override communication failures with some facsimile models that have longer EOL detection.

SW-A2 No. 1 ~ No. 4 Modem speed

Used to set the initial modem speed. The default is 9600BPS.

It may be necessary to program it to a slower speed when frequent line fallback is encountered, in order to save the time required for fallback procedure.

SW-A2 No. 5 Sender’s information transmit

(SENDER’S INFORMATION TRANSMISSION) is a switch to set the function to print the content of HEADER PRINT described in the passcode list at the front end of receiver’s original when original is sent to the remote machine.

If this switch is set to "NO", the HEADER PRINT is not output at the receiving machine.

SW-A2 No. 6 H2 mode

Used to determine reception of H2 mode (15 sec transmission mode). When set to OFF, H2 mode reception is inhibited even though the transmitting machine has H2 mode function.

SW-A2 No. 7 Communication error treatment in RTN sending mode (Reception)

Used to determine communication error treatment when RTN is sent by occurrence of a received image error in G3 reception. When it is set to "1", communication error is judged as no error.

SW-A2 No. 8 CNG transmission

When set to "0" , this model allows CNG transmission by pressing the Start key in the key pad dialing mode. When set to "1", CNG transmission in the key pad dialing mode cannot be performed. In either case. CNG transmission can be performed in the auto dial mode.

SW-A3 No. 1, No. 2 CED tone signal interval

For international communication, the 2100Hz CED tone may act as an echo suppression switch, causing a communication problem.

Though SW-A3 No. 1 and No. 2 are normally set to 0, this setting is used to change the time between the CED tone signal to eliminate the communication caused by echo.

SW-A3 No. 3 MR Coding

MR Coding is enable.

SW-A3 No. 4 ~ No. 8 Reserved

Set to "0".

SW-A4 No. 1 ~ No. 5 Signal transmission level

Used to control the signal transmission level in the range of-0dB to31dB.

SW-A4 No. 6 Protocol monitor (Error print)

If set to "1", protocol is printed at communication error.

SW-A4 No. 7 Protocol monitor

Normally set to "0". If set to "1", communication can be checked, in case of trouble, without using a G3 tester or other tools.

When communication FSK data transmission or reception is made, the data is taken into the buffer. When communication is finished, the data is analyzed and printed out. When data is received with the line monitor (SW-A4 No. 8) set to "1" the reception level is also printed out.

SW-A4 No. 8 Line monitor

Normally set to "0". If set to "1", the transmission speed and the reception level are displayed on the LCD. Used for line tests.

2 – 17

Page 31

SW-A5 No. 1, No. 2 Digital line equalization setting (Reception)

RAPID01 CML RELAY ON

DIALLING

No.6 No.7

0 0 0sec 0 1 1.5sec 1 0 3.0sec 1 1 4.5sec

Line equalization when reception is to be set according to the line characteristics.

Setting should be made according to distance between the telephone and the telephone company central switching station.

SW-A5 No. 3, No. 4 Digital line equalization setting (Transmission)

Line equalization when transmitter is to be set according to the line characteristics.

Setting should be made according to distance between the telephone and the telephone company central switching station.

SW-A5 No. 5, No. 6 Digital cable equalizer setting (Reception for Caller ID)

Line equalization when reception for CALLER ID is to be set according to the line characteristics.

Setting should be made according to distance between the telephone and the telephone company central switching station.

SW-A5 No. 7 Error criterion

Used to select error criterion for sending back RTN when receiving image data.

SW-A5 No. 8 Anti junk fax check

When using the Anti junk fax function, set to "1".

SW-A6 No. 1, No. 2 Reserved

Set to "0".

SW-A6 No. 3 Disconnect the line when DIS is received in RX mode

Bit1= 0: When DIS signal is received during RX mode, the line is disconnected immediately.

Bit1= 1: When DIS signal is received during RX mode, the line is disconnected on the next tone.

SW-A6 No. 4 Equalizer freeze control (MODEM)

This switch is used to perform reception operation by fixing the equalizer control of modem for the line which is always in an unfavorable state and picture cannot be received.

* Usually, the control is executed according to the state of line where the equalizer setting is changed always.

SW-A6 No. 5 Equalizer freeze control 7200BPS only

Setting which specifies SW-A3 No. 6 control only in the condition of 7200BPS modem speed.

SW-A6 No. 6 CNG transmission in manual TX mode

When set to "1", fax transmit the CNG signal in case of manual transmission mode (User press the START key after waiting for the fax answering signal from handset or speaker).

SW-A6 No. 7 Initial compression scheme for sharp fax in TX mode

When set to "0", if the other fax is Sharp model, fax transmit the document by H2 mode. When set to "1", even if the other fax is Sharp model, fax transmit the document by MR mode.

SW-A6 No. 8 Modem speed automatic fallback when RX level is under -40dBm

When set to "1", if fax signal level is under -40dBm during reception, machine selects the slower modem speed automatically.

It is effective when noises occur on the received document due to the long distance communications.

UX-B20U/UX-B20C/B25C

SW-B1 No. 1 ~ No. 4 Recall interval

Choice is made for a redial interval for speed and rapid dial calls.

Use a binary number to program this. If set to 0 accidentally, 1 will be assumed.

SW-B1 No. 5 ~ No. 8 Recall times

Choice is made as to how many redials there should be.

SW-B2 No. 1 Dialing pause (sec/pause)

Pauses can be inserted between telephone numbers of direct dial connection. Selection of 4 sec or 2 sec pause is available.

SW-B2 No. 2 Dial tone detection (before auto dial)

Used to set YES/NO of dial tone detection in auto dialing.

SW-B2 No. 3 Reserved

Set to "0".

SW-B2 No. 4 Busy tone detection (after auto dial)

Used to set busy tone detection in auto dialing.

SW-B2 No. 5, No. 6 Waiting time after dialing

This is time waiting for the opponent’s signals after dialing.

SW-B2 No. 7, No. 8 Reserved

Set to "0".

SW-B3 No. 1 ~ No. 5 Reserved

Set to "0".

SW-B3 No. 6, No. 7 Auto dial mode Delay timer of before line connect

Delay time between the dial key input and line connection under the auto dial mode.

SW-B3 No. 8 Hold key

Used to set YES/NO of holding function by the Hold key.

SW-B4 No. 1, No. 2 Auto dial mode Delay timer of after line connect

Delay time between the line connection and dial data output under the auto dial mode.

RAPID01 CML RELAY ON

No.1 No.2

0 0 1.7sec 0 1 3.0sec 1 0 3.6sec 1 1 4.0sec

SW-B4 No. 3 Dial mode

When using the pulse dial, set to 1. When using the tone dial, set to 0.

DIAL DATA

SW-B4 No. 4 Pulse → Tone change function by key

When setting to 1, the mode is changed by pressing the key from the pulse dial mode to the tone dial mode.

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UX-B20U/UX-B20C/B25C

SW-B4 No. 5 Dial pulse make/break ratio (%)

When using the 33% make ratio pulse dial, set to "0".

When using the 40% make ratio pulse dial, set to "1".

SW-B4 No. 6, No. 7 Reserved

Set to "0".

SW-B4 No. 8 Recalling fixed only one time when dialing was unsuccessful without detecting busy tone signal

When dialing results in failure since the busy tone cannot be detected, recalling is fixed to one time.

Supplementary explanation

If time-out termination is made when dialing, only single recall is possible even if the setting time of recalls (SW-B1 No. 5 - No. 8) has been set to some times. This soft switch is added in order to meet FCC.

SW-B5 No. 1 ~ No. 5 DTMF signal transmission level (Low)

The dial signal of a push button telephone is called DTMF (dual-tone multi-frequency). These tones consist of two signals, one from a high group of frequencies and one from a low group of frequencies. Represent each of the push button telephone characters shown as below.

Low

Frequency

697Hz 770Hz 852Hz 941Hz

The transmission level of DTMF signal is adjusted. (lower frequency)

00000: 0dBm

↓

11111: - 1 5 . 5 dBm (-0 . 5 d B m x 31)

SW-B5 No. 6 ~ No. 8 Reserved

Set to "0".

SW-B6 No. 1 ~ No. 5 DTMF signal transmission level (High)

The transmission level of DTMF signal is adjusted. (higher frequency)

00000: 0dBm

↓

11111: - 1 5 . 5 dBm (-0 . 5 d B m x 31)

SW-B6 No. 6 ~ No. 8 Reserved

Set to "0".

SW-C1 No. 1, No. 2 Reading slice (Binary)

Used to determine the set value of reading density in standard/fine mode. The standard setting is "00" (Factory setting is "00")

SW-C1 No. 3, No. 4 Reading slice (Half tone)

Used to determine the set value of reading density in half tone mode.

The standard setting is "00" (Factory setting is "00")

SW-C1 No. 5 Line density selection

Used to set the transmission mode which is automatically selected when the Resolution key is not pressed. In the copy mode, however, the fine mode is automatically selected unless the Resolution key is manually set to another mode.

SW-C1 No. 6 Reserved

Set to "0".

SW-C1 No. 7 MTF correction in half tone mode

This allows selection of MTF correction (dimness correction) in the half tone mode.

When "NO" (=1) is selected, the whole image becomes soft and mild.

Clearness of characters will be reduced. Normally set to "YES" (=0).

High Frequency

1209Hz

1 4 7

1336Hz

2 5 8 0

1477Hz

3 6 9

SW-C1 No. 8 Reserved

Set to "0".

SW-D1 No. 1 ~ No. 4 Number of rings for auto receive

When the machine is set in the auto receive mode, the number of rings before answering can be selected. It may be set from one to four rings using a binary number. Since the facsimile telephone could be used as an ordinary telephone if the handset is taken off the hook, it should be programmed to the user’s choice. If the soft switch was set to 1, direct connection is made to the facsimile. If a facsimile calling beep was heard when the handset is taken off the hook, press the START key and put the handset on the hook to have the facsimile start receiving. If it was set to 0 accidentally, receive ring is set to 1.

NOTE: If the machine is set to answer after a large number of rings, it

may not be able to receive faxes successfully. If you have difficulty receiving faxes, reduce the number of rings to a maximum of 6.

SW-D1 No. 5 Automatic switching manual to auto receive mode

This soft switch is used to select whether the machine should switch to the auto receive mode after 5 rings in the manual receive mode or remain in the same way as SW-D1 No. 1, No. 2, No. 3 and No. 4 "0"1"0"1"(5 rings).

SW-D1 No. 6 Reserved

Set to "0".

SW-D1 No. 7, No. 8 CI detect frequency

Detection frequency of ring signal for auto reception is set. When set to No. 6=0, No. 7=0, frequency is set to PTT recommendation. When set to No. 6=0, No. 7=1, frequency is set to 11.5Hz or more. When set to No. 6=1, No. 7=0, frequency is set to 13.0Hz or more. When set to No. 6=1, No. 7=1, frequency is set to 20.0Hz or more.

SW-D2 No. 1 ~ No. 3 Distinctive ringing setting (PATTERN 4 and 5 are for CANADA only)

This function allows reception of services offered by USA and Canada telephone companies in which the customer contracts with the telephone company to have up to 4 telephone numbers (USA) or 6 telephone numbers (Canada) established for one line.

Each telephone number is signaled by a different ringing pattern, and the customer can allocate each number to a specific use.

Phone Number Intended

Purpose

Ring Pattern 555-1234 Voice Calls Standard

555-1235 Facsimile Calls Pattern 1 555-1236 Answering

Machine

555-1237 PC Modem Pattern 3

Ring Pattern

Pattern 2

DISTINCTIVE RING → 1:RING PATTERN 1 → 2:RING PATTERN 2

↑

↓

7:OFF SETTING 3:RING PATTERN 3

↑

STANDARD RING←5:

• Ring Pattern

STANDARD has 5 ring patterns, and DISTINCTIVE has 9 patterns, Ring Patterns 1~4 for USA, and 5~9 for Canada. However, to make the setting procedure as easy as possible for the user to understand these patterns are grounded as follows:

RING PATTERN 5 ← 4:RING PATTERN 4

↓

2 – 19

Page 33

2S ring

400msec

2000msec

1 2

STANDARD

RING

PATTERN 1

for USA

RING

PATTERN 2

for USA

RING

PATTERN 3

for USA

RING

PATTERN 4

for USA

RING PATTERN 5 for CANADA

RING PATTERN 6 for CANADA

RING PATTERN 7 for CANADA

RING PATTERN 8 for CANADA

RING PATTERN 9

for CANADA

2S ring

1.5S ring

1S ring

1.5S ring

0.8S

0.3S

0.2S

0.4S

0.2S 0.2S 1S

0.25S

0.5S

0.8S

0.4S

0.3S

0.2S

0.4S 0.8S

1S 1S

0.5S

0.25S

0.2S

0.25S

0.2S

2S ring

3S ring

4S ring

0.5S

1S 0.5S

0.5S0.5S

0.5S

0.5S0.5S

0.25S

4S ring

SW-D2 No. 4 Reserved

Set to "0".

SW-D2 No. 5 Caller ID function

Used for Caller ID function.

SW-D2 No. 6 Caller ID detect during CI off

Detection of caller ID signal is performed as follows: 0:First CI OFF only 1:All of CI OFF

SW-D2 No. 7, No. 8 Reserved

Set to "0".

UX-B20U/UX-B20C/B25C

SW-D3 No. 1 ~ No. 5 CI off detection timer (0-1550ms setting by 50ms step)

Set the minimum time period of CI signal interruption which affords to be judged as a CI OFF section with 50ms steps. (Example).

01110 (50ms ~ 14):

700ms (CI interruption>700ms:Judged as a CI OFF section) The section 1 is not judged as a CI OFF section, the CI signal A is counted as one signal. The section 2 is judged as a CI OFF section, the CI signal B is considered as the second signal.

00111 (50ms ~ 7):

350ms (CI interruption>350ms:Judged as a CI OFF section) The section 1 is judged as a CI OFF section, and the CI signal A is counted as two signals. The section 2 is judged as a CI OFF section, and the CI signal B is considered as the third signal.

SW-D3 No. 6 ~ No. 8 Reserved

Set to "0".

SW-E1 No. 1 ~ No. 8 Reserved

Set to "0".

SW-E2 No. 1 ~ No. 8 Reserved

Set to "0".

SW-E3 No. 1 ~ No. 8 Reserved

Set to "0".

SW-F1 No. 1, No. 2 DTMF detect time

Used to set detect time of DTMF (Dual Tone Multi Frequency) used in remote reception (5 ).

The longer the detect time is, the less the error detection is caused by noises.

SW-F1 No. 3 Protection of remote reception (5 ) detect

Used to set the function of remote reception (5 ). When set to "1", the remote reception function is disabled.

SW-F1 No. 4 Remote reception with GE telephone

(Corresponding to TEL mode by GE) P. B. X.

"1": Compatible with TEL mode by GE

"0": Not compatible

• When sending (5 ) for remote reception with a GE manufactured telephone remote reception may not take place because of special specifications in their DTMF. To overcome this, a soft SW is provided to change the modem setting to allow for remote reception.

• If this soft SW is set to "1", other telephone sets may be adversely affected.

SW-F1 No. 5 ~ No. 8 Remote operation code figure by external TEL (0 ~ 9)

Remote operation codes can be changed from 0 through 9. If set to greater than 9, it defaults to 9. The "5 " is not changed. Ex-7 (Default: 5 )

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UX-B20U/UX-B20C/B25C

SW-F2 No. 1 CNG detection in STAND-BY mode

When setting to "1", the CNG signal detection function during stand-by stops.

SW-F2 No. 2, No. 3 Reserved

Set to "0".

SW-F2 No. 4, No. 5 Number of CNG detect (STAND-BY mode)

Used for detection of CNG in 1 to 4 pulses.

SW-F2 No. 6 ~ No. 8 Reserved

Set to "0".

SW-G1 No. 1 ~ No. 8 Reserved

Set to "0".

SW-G2 No. 1 ~ No. 8 Reserved

Set to "0".

SW-G3 No. 1 ~ No. 8 Reserved

Set to "0".

SW-H1 No. 1 ~ No. 8 Reserved

Set to "0".

SW-H2 No. 1 ~ No. 8 Reserved

Set to "0".

SW-I1 No. 1 ~ No. 8 Reserved

Set to "0".

SW-I2 No. 1 ~ No. 8 Reserved

Set to "0".

SW-I3 No. 1 ~ No. 8 Reserved

Set to "0".

SW-I4 No. 1 ~ No. 8 Reserved

Set to "0".

SW-I5 No. 1 ~ No. 8 Reserved

Set to "0".

SW-I6 No. 1 ~ No. 8 Reserved

Set to "0".

SW-I7 No. 1 ~ No. 8 Reserved

Set to "0".

SW-J1 No. 1, No. 2 Reserved

Set to "0".

SW-J1 No. 3 Sender’s phone number setting

Used to make a choice of whether the registered sender’s phone number can be changed or not. If the switch is set to "1", new registration of the sender’s phone number is disabled to prevent accidental wrong input.

SW-J1 No. 4, No. 5 Reserved

Set to "0".

SW-J1 No. 6 Summer time setting

This is used to set YES/NO of automatic clock adjustment for European Summer time.

SW-J1 No. 7, No. 8 Ringer volume

Used to adjust ringing volume.

SW-J2 No. 1, No. 2 Speaker volume (3 stages)

Used to adjust sound volume from a speaker.

SW-J2 No. 3 Reserved

Set to "0".

SW-J2 No. 4, No. 5 Handset receiver volume

Used to adjust sound volume from a handset receiver volume.

SW-J2 No. 6 ~ No. 8 Reserved

Set to "0".

SW-J3 No. 1 Reserved

Set to "0".

SW-J3 No. 2 ~ No. 4 Communication result printout (Transaction report)

Every communication, the result can be output. As usual, it is set to print the timer sending communication error alone. If No. 2: 0 No. 3: 1 No. 4: 0 are set, printing is always on (printed even if it is normally ended).

000: Error, timer and memory sending/receiving

001: Sending

010: Continuous printing

011: Not printed

100: Communication error

SW-J3 No. 5 ~ No. 8 Reserved

Set to "0".

SW-K1 No. 1 ~ No. 8 Reserved

Set to "0".

SW-L1 No. 1 ~ No. 4 Reserved

Set to "0".

SW-L1 No. 5 Cut off mode (COPY mode)

Whether the excessive part is printed on the next recording paper or discarded is selected to copy a document which is longer than the recording paper.

SW-L1 No. 6 A4 Paper enable

The use of recording paper of A4 is enabled.

SW-L1 No. 7 LEGAL and LETTER paper enable

The use of recording paper of LEGAL and LETTER is enabled.

SW-L1 No. 8 Reserved

Set to "0".

SW-L2 No. 1, No.2 Paper set size

At present size of the recording paper.

SW-L2 No. 3 Automatic reduce of receive

If set to 1, it is reduced automatically when receiving.

SW-L2 No. 4 ~ No. 8 Reserved

Set to "0".

SW-M1 No. 1 ~ No. 8 Reserved

Set to "0".

SW-M2 No. 1 ~ No. 8 Reserved

Set to "0".

SW-N1 No. 1 ~ No. 8 Reserved

Set to "0".

SW-N2 No. 1 ~ No. 8 Reserved

Set to "0".

SW-N3 No. 1 ~ No. 8 Reserved

Set to "0".

2 – 21

Page 35

SW-O1 No. 1 ~ No. 8 Reserved

Set to "0".

SW-O2 No. 1 ~ No. 8 Reserved

Set to "0".

SW-O3 No. 1 ~ No. 8 Reserved

Set to "0".

SW-O4 No. 1 ~ No. 8 Reserved

Set to "0".

SW-O5 No. 1 ~ No. 8 Reserved

Set to "0".

SW-O6 No. 1 ~ No. 8 Reserved

Set to "0".

SW-P1 No. 1 ~ No. 8 Reserved

Set to "0".

SW-P2 No. 1 Reserved

Set to "0".

SW-P2 No. 2, No. 3 Reserved

Set to "1".

SW-P2 No. 4 Reserved

Set to "0".

SW-P2 No. 5 ~ No. 8 Reserved

Set to "1".

SW-P3 No. 1 ~ No. 8 Reserved

Set to "0".

SW-P4 No. 1 ~ No. 8 Reserved

Set to "0".

SW-P5 No. 1 ~ No. 8 Reserved

Set to "0".

SW-P6 No. 1 Ink save mode

If set to “1”, printing is done with half of ink.

SW-P6 No. 2 Half tone copy ink save mode printing fixed

If set to “1”, copy of half tone resolution is printed with ink save mode regardless of SW-P6 No. 1 setting. If set to “0”, copy of half tone resolution is printed based on SW-P6 No. 1 setting.

SW-P6 No. 3 ~ No. 8 Reserved

Set to "0".

SW-P7 No. 1 ~ No. 3 Reserved

Set to "0".

SW-P7 No. 4, No. 5 End buzzer

The sounding length of the buzzer for normal end of operation set.

SW-P7 No. 6 Key error/ Communication error beep

When set to “1”, the machine will not sound the alert beep when the communication error/printer error/key error are occurred.

SW-P7 No. 7 End buzzer (3sec)

When set to “1”, the machine will not sound the end-beep (3sec) when the communication or copy etc. has finished normally.

SW-P7 No. 8 Key touch tone

When set to “1”, the machine will not sound the key touch tone (except for key error tone).

UX-B20U/UX-B20C/B25C

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UX-B20U/UX-B20C/B25C

[3] Troubleshooting

Refer to the following actions to troubleshoot any of the problems mentioned in 1-4.

[1] A communication error occurs.

[2] Image distortion produced.

[3] Unable to do overseas communication.

[4] Communication speed slow due to FALLBACK.

• In crease the transmission level SOFT SWITCH A4-1, 2, 3, 4, 5. May be used in case [1] [2] [3].

• Decrease the transmission level SOFT SWITCH A4-1, 2, 3, 4, 5. May be used in case [3].

TO: ATT: Ref.No. :

CC: ATT: Date :

FM: Dept :

***** Facsimile communication problem ***** Ref.No.:

Our customer Name Tel N o .

Other party Name Tel N o .

Problem mode Line: Domestic / international Model: G3 Phase: A, B, C, D.

Frequency: % ROM version:

Confirmation item

Address Fax No.

Contact person Model name

Address Fax No. Contact person Model name

Reception / Transmission

Our customer

Automatic reception / Manual reception Automatic dialing / Manual dialing / Others

B1 B2

• Apply line equalization SOFT SWITCH A2-1, 2, 3, 4. May be used in case [1] [2] [3] [4].

• Slow down the transmission speed SOFT SWITCH A2-1, 2, 3, 4. May be used in case [2] [3].

• Replace the LIU PWB. May be used in all cases.

• Replace the control PWB. May be used in all cases.

• If transmission problems still exist on the machine, use the following format and check the related matters.

Sign :

Date:From: Mr. Fax Tel No.:

Other party

Please mark problem with an X. No problem is: 0.

A1 A2 B1 B2 C1 C2 D1 D2 E1 E2

A1 A2

Our service

Comment

Countermeasure

**** Please attach the G3 data and activity report on problem. ****

* Please complete this report before calling the "TAC" hotline if problem still occurs.

C1 D2

C2 D1

E1 E2

Other

arty's service

Transmission level setting is ( ) dB at our customer

Transmission level ( ) dBm Reception level ( ) dBm By level meter at B1 and B2

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UX-B20U/UX-B20C/B25C

[4] Error code table

1. Communication error code table

1.1. G3 Transmission

Code Final received signal Error Condition (Receiver side)

0 Incomplete signal frame Cannot recognize bit stream after flag 1 NSF, DIS Cannot recognize DCS signal by echo etc.

Cannot recognize NSS signal (FIF code etc.) 2 CFR Disconnects line during reception (carrier missing etc.) 3 FTT Disconnects line by fall back 4 MCF Disconnects line during reception of multi page

Cannot recognize NSS, DCS signal in the case of mode change 5 PIP or PIN The line is hung up without replying to telephone request from the receiving party.

6 RTN or RTP Cannot recognize NSS, DCS signal after transmit RTN or RTP signal. 7 No signal or DCN No response in receiver side or DCN signal received* (transmitter side) 8 - Owing to error in some page the error could not be corrected although the specified number of

11 - Error occurred after or while reception by the remote (receiving) machine was revealed to be

12 - Error occurred just after fallback. 13 - Error occurred after a response to retransmission end command was received.

1.2. G3 Reception

error retransmissions were attempted.

impossible.

Code Final received signal Error Condition (Receiver side)

0 Incomplete signal frame Cannot recognize bit stream after flag 1 NSS, DCS Cannot recognize CFR or FTT signal

Disconnects line during transmission (line error) 2 NSC, DTC Cannot recognize NSS signal (FIF code etc.) 3 EOP Cannot recognize MCF, PIP, PIN, RTN, RTP signal 4 EOM Cannot recognize MCF, PIP, PIN, RTN, RTP signal in the case of mode change 5 MPS The line is hung up without replying to communication request. 6 PR1-Q Cannot recognize PIP, PIN signal in the case of TALK request 7 No signal or DCN No response in transmitter (cannot recognize DIS signal) or DCN signal received* (receiver side) 8 - Error occurred upon completion of reception of all pages. 9 - Error occurred when mode was changed or Transmission/Reception switching was performed.

10 - Error occurred during partial page or physical page reception. 11 - Error occurred after or during inquiry from the remote (transmitting) machine as to whether recep-

tion is possible or not.

12 - Error occurred during or just after fallback. 13 - Error occurred after the retransmission end command was received.

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UX-B20U/UX-B20C/B25C

FAXUX-B20U/UX-B20C/B25CService ManualService ManualMarketE

CHAPTER 3. MECHANISM BLOCKS

[1] General description

1. Document feed block and diagram

3.2. Automatic document feed

1) Use of the paper feed roller and separate plate ensures error-free transport and separation of documents. The paper feed plate spring presses the document to the paper feed roller to assure smooth feeding of the document.

2) Document separation method: Separate plate

Exit roller

Document guide lower

Paper feed roller

CIS

Document guide upper

FRSNS sensor

ORGSNS sensor

Back roller

PO pinch roller

Fig. 1

2. Document feed operation

1) The original, which is set in the document hopper, feeds automatically when the FRSNS sensor is activated. This in turn activates the drive motor which drives the paper feed roller. The document stops when the lead edge is detected by the ORGSNS sensor.

2) The lead edge of the original is fed a specified number of pulses after the lead edge of the document is detected for the reading process to begin.

3) The trailing edge of the original is fed a specific number of pulses after the trailing edge of the document deactivates the ORGSNS sensor. The read process then stops and the original is discharged.

4) When the FRSNS sensor is in the OFF state (any document is not set up in the hopper guide), the drive will be stopped when the document is discharged.

3. Hopper mechanism

3.1. General view

Paper feed plate

Separate rubber

Separate plate

Sub feed plate

Document guide upper

Document

Document guide lower

Paper feed roller

Fig. 3

3.3. Documents applicable for automatic feed

10 sheets 1sheet(Manual)

Paper weight 70 kg

21.5 lbs.

(80 g/m

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

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

Feeder capacity A4/LTR: 10 sheets max.

LGL : 5 sheets max.

NOTE: Double-side coated documents and documents on facsimile

recording paper should be inserted manually. The document feed quantity may be changed according to the document thickness.

Documents corresponding to a paper weight heavier than 70 kg (80 g/

) and lighter than 135 kg (157 g/m2) are acceptable for manual

feed.

Documents heavier than 135 kg (157 g/m weight must be duplicated on a copier to make it operative in the facsimile.

70 kg ~ 135 kg 14 lbs. ~ 42 lbs.

(52 g/m

) in terms of the paper

~ 157g/m2)

Fig. 2

The hopper section contains document guides that are used to adjust the hopper to the width of the original document. This ensures that the original feeds straight into the fax machine for scanning.

Document width: 148 mm to 216 mm (A5 longitudinal size to Letter longitudinal size)

NOTE: Adjust the document guide after setting up the document.

3.4. Loading the documents

1. Make sure that the documents are of suitable size and thickness, and free from creases, folds, curls, wet glue, wet ink, clips, staples and pins.

2. Place documents face down in the hopper.

i) Adjust the document guides to the document size.

ii) Align the top edge of documents and gently place them into the

hopper. The first page under the stack will be taken up by the feed roller to get ready for transmission.

NOTE: 1) Curled edge of documents, if any, must be straightened

out.

2) Do not load the documents of different sizes and/or thicknesses together.

3 – 1

Page 39

Back of document

Paper feed plate

Separate rubber

Separate plate

Sub feed plate

Document guide upper

Last page of document

First page of document

Document

Document guide lower

Paper feed roller

Fig. 4

3.5. Documents requiring use of document carrier

1) Documents smaller than 148mm (W) x 140mm (L).

2) Documents thinner than the thickness of 0.06mm.

3) Documents containing creases, folds, or curls, especially those whose surface is curled (maximum allowable curl is 5mm).

4) Documents containing tears.

5) Carbon-backed documents. (Insert a white sheet of paper between the carbon back and the document carrier to avoid transfer of carbon to the carrier.)

6) Documents containing an easily separable writing material (e.g., those written with a lead pencil).

7) Transparent documents.

8) Folded or glued documents. Document in document carrier should be inserted manually into the feeder.

UX-B20U/UX-B20C/B25C

4. Document release

4.1. General

To correct a jammed document or to clean the document running surface, pull the insertion side of document center of the operation panel. To open the upper document guide, the operation panel must be opened first.

5. Recording block

1) The pulse motor is rotated by the PICK UP ROLLER to feed the recording sheet. The PICKUP ROLLER feeds one by one from the top sheet.

2) The recording sheet contacts the P-IN SENSOR.

3) The FEED ROLLER rotates in the reverse direction of paper feed (refer to the figure of PICKUP ROLLER). The tip of recording sheet is set parallel to the FEED ROLLER when it reaches to the FEED ROLLER and the PRESS ROLLER after through the PICK UP ROLLER.

4) Then the FEED ROLLER rotates in the paper feed direction to feed the recording sheet downwards. (refer to the figure of PAPER FEED)

5) The CARTRIDGE prints the recording sheet, which is then ejected by the EXIT ROLLER and STAR WHEEL.

5.1. General view

Print cartridge

Star wheel

Paper

Exit roller

Housing buckler B

Feed roller

Fig. 5

Pick up roller

Friction pad

Housing buckler rubber

P-IN sensor

Press roller

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UX-B20U/UX-B20C/B25C

[2] Ink jet printer

1. Engine specifications

1.1. Mechanism

Resolution:600dpi x 600dpi address ability

Print speed:2.9PPM text with black cartridge

Print swath:8 inches

Duty cycle:250 pages per month average

Dimensions:330mm x 100mm x 130mm

Weight:1.98punds(900g)(1p=453g)

Acoustics:50db in letter quality mode

1.2. Electrical

No electrical hardware included with the type B engine except for the carrier drive stepping motor, the Sensor FPC assembly which includes a photo interrupter for sensing home position, the carrier cables, and the printhead cable.

2. Abbreviations

EOF End-of Form

ESD Electrostatic Discharge

FRU Field Replaceable Unit

HVPS High Voltage Power Supply

LVPS Low Voltage Power Supply

OEM Original Equipment Manufacturer

POST Power-On Self Test

V ac Volts alternating current

V dc Volts direct current

ZIF Zero Insertion Force

3. Diagnostic information

3.1. Print cartridge

Black Print Cartridge 208 Nozzles

Pigment based(Water proof)

initial cartridge

Approx.yield 300 letter pages at 4%coverage

Replacement cartridge:SHARP UX-C70B Approx.yield 600 letter pages at 4%coverage

* When Ink Save mode is enabled.

3.2. Start

Power-On Self Test (POST) Sequence

When you turn the printer on it performs a POST. Turn the machine on and check for a correct POST operation by observing the following:

1. The carrier moves.

2. The paper feed gears turn.

3. After 30 seconds the carrier moves over the maintenance station and caps the printhead.

4. All motors stop

4.2. Electrical system

The PWB provides mechanical control for Ink Jet Printer. Fig. 1 shows the interconnection of PWB and other electrical component in the print mechanism.

Photo Sensor

FFC

FPC

Fig. 1

To Control PWB

4.3. Electrical overview

The information in this section appears in a sequence relative to the system diagram in the following figure.

Control PWB

Driver

Sensor

Home Position

Fig. 2

Head

4.4. Power supply connector

The mechanism requires two voltages (+3.3V, +11.82V and +30V). These three voltages supplied from CNHEAD1 connector.

4.5. Host interface connector

FFC on the Ink PWB provides 23 lines from the host unit, for control of various operating options available to the host. The two primary functions of the host interface are:

Printing data for the Ink Jet Printer

Error status to the host

4.6. Driver IC

One driver IC drive 208 (MONO) nozzles on the cartridge. This driver IC, located on the Ink PWB, also connected back to the ASIC, on Control PWB.

4.7. Ink cartridge carrier

The carriage connects via a FPC on the Ink PWB. The ink cartridge contacts connect to the carriage contacts. The ASIC controls the carriage and ink cartridge.

4.8. Home position

Measure the position of the carrier unit by reading the scale of the encoder ((1) in the figure) with the photo sensor ((2) in the figure). When power is supplied, the carrier unit moves right until it contacts the dead-end of the right main frame ((3) in the figure). We call this home position and hereinafter, regard as the starting point to measure the position of the carrier unit by reading the scale of the encoder with the photo sensor. The home position shall be applied to all operations.

(1)

(2)

4. Circuit description

4.1. General description

The compact design of Ink PWB is obtained by using Head Driver IC and Home position Sensor.

(3)

Fig. 3

3 – 3

Page 41

5. Overall troubleshooting of Printer

• BOTH CARRIER MOTOR AND FEED MOTOR ARE NG.

UX-B20U/UX-B20C/B25C

FUSE "FU101"

+30V CNHEAD1(8PIN)

CHECK IC10

REPLACE CONTROL PWB

OPEN

REPLACE FU101

CHECK RESISTANCE

BETWEEN +30V AND GND.

SHORT OR NOT

REPLACE CONTROL PWB

REPLACE IC10

• FEED MOTOR IS NG (CARRIER MOTOR IS

GOOD)

CHECK +30V PATTERN

SHORT

CHECK WAVEFORMS IC10 (19,21,25,27PIN)

REPLACE FEED MOTOR

• CARRIER MOTOR IS NG (FEED MOTOR IS

GOOD)

CHECK WAVEFORMS IC10 (19,21,25,20PIN)

REPLACE CARRIER

REPLACE CONTROL PWB

3 – 4

Page 42

UX-B20U/UX-B20C/B25C

• MISSING NOZZLES (RESULT OF CHECK PATTERN OR CLEAN NOZZLES)

CLEAN NOZZLES

REPLACE ANOTHER CARTRIDGE

MISSING MANY NOZZLES

YES

CHECK THE SOLDER

CNHEAD1,2 (CONTROL PWB)

CHECK +11.82V (CNHEAD1-5,6PIN)

CHECK +30V (CNHEAD1-8PIN)

CHECK IC AND CONNECTOR

CORRECT SOLDER

CHECK RESISTANCE BETWEEN

+11.82V AND GND, SHORT OR NOT.

CHECK +11.82V PATTERN REPLACE CONTROL PWB

CHECK RESISTANCE BETWEEN

+30V AND GND, SHORT OR NOT.

SHORT

CHECK +3.3V (CNHEAD1-4PIN)

REPLACE IC10

CHECK +30V PATTERN

CHECK RESISTANCE BETWEEN

+3.3V AND GND, SHORT OR NOT.

CHECK +3.3V PATTERN REPLACE CONTROL PWB

REPLACE CONTROL PWB

SHORT

3 – 5

Page 43

UX-B20U/UX-B20C/B25C

[3] Disassembly and assembly procedures

• This chapter mainly describes the disassembly procedures. For the assembly procedures, reverse the disassembly procedures.

• Easy and simple disassembly/assembly procedures of some parts and units are omitted. For disassembly and assembly of such parts and units, refer to the Parts List.

• The numbers in the illustration, the parts list and the flowchart in a same section are common to each other.

• To assure reliability of the product, the disassembly and the assembly procedures should be performed carefully and deliberately.

ASF cover/Top cabinet/Document guide under

Document guide under

Parts list (Fig. 1)

No. Part name Qty

1 Mechanism unit 1

2 Screw (3x12) 2

3 Screw (3x10) 1

4 ASF cover 1

5 Screw (3x12) 3

6 Top cabinet 1

7 Document guide under 1

ASF cover

Top cabinet

NOTE: For disassembly of the inside of the unit, refer to the exploded view in the parts guide.

Mechanism unit

Fig.1

3 – 6

Page 44

UX-B20U/UX-B20C/B25C

Main frame unit/Operation panel unit/ Speaker

NOTE: For disassembly of the inside of the unit,

refer to the exploded view in the parts guide.

Main frame unit

Parts list (Fig. 2)

No. Part name Qty No. Part name Qty

1 Mechanism unit

2 Connector 2

3 Screw (3x10) 5

4 Screw (3x10) 1

5 Screw (3x6) 1

6 Speaker spring 1

7 Speaker 1

8 Screw (3x10) 1

9 Operation panel unit 1

10 Main frame unit 1

Control PWB

Operation panel unit

LIU PWB

Power supply PWB

Speaker

Mechanism unit

Fig.2

3 – 7

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UX-B20U/UX-B20C/B25C

PWB's

NOTE: For disassembly of the inside of the unit,

refer to the exploded view in the parts guide.

Power supply PWB

Washer

Core

earth cable DG

earth cable

LIU PWB

Parts list (Fig. 3)

No. Part name Qty No. Part name Qty

1 Mechanism unit 1

2 Screw (3x10) 2

3 Screw (3x6) 1

4 LIU PWB unit 1

5 Screw (3x10) 1

6 Screw (4x6) 1

7 Power supply PWB unit 1

8 Screw (3x6) 3

9 Sheet 1

10 Connector 5

11 Flat cable 2

12 Control PWB unit 1

Control PWB

Mechanism unit

Main frame unit

Fig.3

3 – 8

Page 46

UX-B20U/UX-B20C/B25C

Wire treatment

Carrier motor cable

Speaker cable

Rib

Feed motor cable

Control PWB

Panel cable

Filament tape

Speaker cable

Parts list (Fig. 4)

No. Part name Qty

1 Band (100mm) 8

2 Wire holder 2

3 Screw (4x6) 1

4 Screw (3x6) 1

5 Core (F2147) 1

6 Core (F0049) 1

FPC flat cable

Panel cable

CIS cable

LIU cable

Feed motor cable

Rib

CIS cable

Rib

Carrier motor cable

Operation Panel unit

Panel cable

Main frame unit

FPC flat cable

FG earth cable

DG earth cableLIU PWB Power supply PWB

Rib

CML1

AC cord earth cable

AC cord

Carrier unit

5 : The AC cord

earth cable puss to the core 2 times.

Fig.4

3 – 9

Page 47

FAXUX-B20U/UX-B20C/B25CService ManualService ManualMarketE

CHAPTER 4. DIAGRAMS

[1] Block diagram

UX-B20U/UX-B20C/B25C

INK PWB UNIT

FPC

SPIT

FIRE

POS

CONTROL PWB UNIT

MOTOR

CARRIER

THUNDERBOLT

MOTOR DRIVER

ASIC

PRINTER CONTROL

IMAGE PROCESSING

FEED

MOTOR

SD-RAM

(16MBIT)

LCD UNIT

(KEY,SENSOR)

OPERATION PANEL PWB UNIT

HANDSET

LIU PWB UNIT

(SCE209L)

FAX ENGINE

CIS UNIT

(PROGRAM)

FLASH(4MBIT)

D-RAM(4MBIT)

+30V

PWB UNIT

POWER SUPPLY

+5V

4 – 1

Page 48

UX-B20U/UX-B20C/B25C

[2] Wiring diagram

AC CORD

CN1

INK PWB UNIT FPC

MOTOR

CARRIER

FEED

MOTOR

LCD UNIT

POWER SUPPLY PWB UNIT

LIU PWB UNIT

CNHJ

CNPW

CNLIU

CNFDMT

CNHEAD1

CNHEAD2

CNCRMT

CNLCD

CNPW

CNPN

12 8

CONTROL PWB UNIT

CNLIU

CNSP

CNPRG

CNCIS

CNPN

OPERATION PANEL PWB UNIT

CIS

TEL LINE CNLNJ

HANDSET

SPEAKER

4 – 2

Page 49

[3] Point-to-point diagram

UX-B20U/UX-B20C/B25C

VO VG

CISVDD

øT

CISCLK

GLED

+24V

SP+

SPD-

FLTXD

FLRXD

OPERATION

PANEL

PWB UNIT

CNPN KEN4A KEN3A KEN2A KEN1A

+3.3V

ORGSNS-

FRSNS-

E SEN0 SEN1 SEN2 SEN3 SEN4 SEN5 SEN6

10 11 12 13 14 15 16

LIU PWB UNIT

CNLIUCNLIU

+24V

ADG

+5V

RHS-

TELIN

TELMUTE

RXIN

TXOUT

CML 11 12

INK PWB UNIT CNHEAD1CNHEAD1

10 11 12

CNHEAD2CNHEAD2

10 11 12

MICMUTE

1 2 3 4 5 6 7 8 9

OK2PRT

1 2

PENABLE 3 4 5 6 7 8 9

CI-

ACLK AGATE +3.3VS

+11.82V +11.82V

PCLK

+30VHD

PHID1

DG DG

PLOAD

PHD0 PHD1 PHD2 PHD3 LHXS

LCN

SPRES-

POS

øT

CONTROL

PWB UNIT

+24V

ADG ADG

+5V

RHS-

TELIN

TELMUTE

RXIN

TXOUT

CML

CI-

MICMUTE

ACLK AGATE +3.3VS

+11.82V +11.82V

PCLK

+30VHD

PHID1

OK2PRT

DG DG

PENABLE

PLOAD

PHD0

PHD1

PHD2

PHD3

LHXS

LCN

SPRES-

POS

1 2 3 4 5 6 7 8

9 10 11 12

10 11 12

CNCISCIS 1 2 3 4 5 6 7

1 2

1 2 3

1 2 3 4 5 6 7 8 9

1 2 3 4 5 6 7

CNSPSPEAKER

1 2

CNPRGDOWNLOAD cable

1 2 3

CNPN

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16

VO VG

CISVDD

CISCLK

GLED

+24V

SP+

SPD-

FLTXD

FLRXD

KEN4A KEN3A KEN2A KEN1A

+3.3V

ORGSNS-

FRSNS-

SEN0 SEN1 SEN2 SEN3 SEN4 SEN5 SEN6

POWER

SUPPLY

PWB UNIT

+30V +30V

MG MG DG

DG +5V +5V

CNCRMT

CMA+

CNPWCNPW

+30V

1 2 3 4 5 6 7 8

+30V

+5V

CMB+

CMACMB-

FMA+ FMB+

FMAFMB-

1 2 3 4

CARRIER MOTOR

CMA+

CMB+

CMA-

CMB-

FEED MOTORCNFDMT

FMA+

FMB+

FMA-

FMB-

4 – 3

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UX-B20U/UX-B20C/B25C

FAXUX-B20U/UX-B20C/B25CService ManualService ManualMarketE

CHAPTER 5. CIRCUIT DESCRIPTION

[1] Circuit description

1. General description

The compact design of the control PWB is obtained by using CONEXANT fax engine in the main control section and high density printing of surface mounting parts. Each PWB is independent according to its function as shown in Fig. 1.

2. PWB configuration

MOTOR

INK

CIS

LCD

UNIT

PANEL

PWB

CONTROL

PWB

Fig.1

2.1. Control PWB

The Control PWB controls peripheral PWBs, mechanical parts, transmission, and performs overall control of the unit. This machine employs a 1-chip modem (SCE209L) which is installed on the Control PWB.

2.2. LIU PWB

This PWB controls connection of the two telephone lines to the unit.

PWB

LIU PWB

POWER SUPPLY

PWB

AC CORD

3. Operational description

Operational descriptions are given below:

• Transmission operation

When a document is loaded in stand-by mode, the state of the document sensor is sensed via the 1 chip fax engine (SCE209L). With depression of the START key in the off-hook state, transmission takes place. Then, the procedure is sent out from the modem and the motor is rotated to move the document down to the scan line. In the scan processor, the signal scanned by the CIS is sent to the internal image processor and the AD converter to convert the analog signal into binary data. This binary data is transferred from the scan processor to the image buffer within the RAM and encoded and stored in the transmit buffer of the RAM. The data is then converted from parallel to serial form by the modem where the serial data is modulated and sent onto the line.

• Receive operation

There are two ways of starting reception, manual and automatic. Depression of the START key in the off-hook mode in the case of manual receive mode, or CI signal detection by the LIU in the automatic receive mode. First, the SCE209L controls the procedure signals from the modem to be ready to receive data. When the program goes into phase C, the serial data from the modem is converted to parallel form in the modem interface of the 1 chip fax engine (SCE209L) which is stored in the receive buffer of the RAM. The data in the receive buffer is decoded software-wise to reproduce it as binary image data in the image buffer. The data is sent to ASIC by serial data. ASIC controls printing system.

• Copy operation

To make a copy on this facsimile, the COPY key is pressed when the machine is in stand-by with a document on the document table and the telephone set is in the on-hook state. First, depression of the COPY key advances the document to the scan line. Similar to the transmitting operation, the image signal from the CIS is converted to a binary signal in the DMA mode via the 1 chip fax engine (SCE209L) which is then sent to the image buffer of the RAM. Next, the data is transferred to ASIC and modify the data to send to Spitfire (Ink PWB) ASIC controls Feed Motor and Carrier Motor.

2.3. Power supply PWB

This PWB provides voltages of +5V and +30V to the other PWBs.

2.4. Panel PWB

The panel PWB allows input of the operation keys.

2.5. LCD UNIT

This unit controls the LCD display.

2.6. Ink PWB

This PWB controls the Ink cartridge.

5 – 1

Page 51

[2] Circuit description of control PWB

1. General description

Fig. 2 shows the functional blocks of the control PWB, which is composed of 5 blocks.

(4) ASIC (5) DRAM

UX-B20U/UX-B20C/B25C

2.2.2 DRAM Controller

The CX06835 includes a DRAM controller with signal and page mode access support which supports fast, normal, or slow refresh time. DRAM memory space is provided in one block up to 4 MB. A maximum of 4 MB of DRAM is supported. This space has a programmable size and starting address. Refresh is performed automatically and is supported in stand-by mode. CAS and RAS signal support is provided for one-DRAM banks for both 4-bit and 8-bit organizations. Access speeds from 50ns to 70ns can be supported.

(1) SCE209L IA(CX06835)

MEMORY(SRAM)

Fig. 2 Control PWB functional block diagram

(2) FLASH

(3) DRAM

2. Description of each block

2.1. Main control block

The main control block is composed of CONEXANT 1 chip fax engine (SCE209L), FLASH (4Mbit), DRAM (16Mbit), ASIC (µPD65945).

Devices are connected to the bus to control the whole unit.

2.1.1 SCE209L (IC5): pin-176 QFP (FAX CONTROLLER)

1 chip fax engine has Internal Integrated Analog (CX06835) and Internal memory (SRAM : 32kbit).

2.1.2 PMC39LV040 (IC7): pin-32 TSOP (FLASH)

FLASH of 4Mbit equipped with software for the main CPU.

2.1.3 MSM51V4800E (IC1): pin-28 SOJ (DRAM)

• Image memory for recording process.

• Memory for recording pixel data without paper.

• Memory for system work and ECM receive buffer.

2.1.4 µPD65945 (IC4): pin-144 TSOP (ASIC)

ASIC between SCE209L and SPITFIRE.

It converts the resolution and the aspect ratio of the serial scanning data sent by SCE209L and sends the converted data to Spitfire by parallel IF.

2.1.5 M12L16161A-7TG (IC3): pin-28 SOJ (DRAM)

Dedicated image buffer for ASIC (IC4).

2.2. IC5 (SCE209L) Hardware description

2.2.1 Integrated Controller (SCC)

The Controller contains an internal MC24 Processor with a 16-MB address space and dedicated circuitry optimized for facsimile image processing and monitoring and for thermal or thermal transfer printer support. The CPU provides fast instruction (up to 10 MHz clock speed) execution and memory efficient input/output bit manipulation. The CPU connects to other internal functions over an 8-bit data bus and 24-bit address bus and dedicated control lines. The 24-bit external address bus, 8-bit data bus, control, status and decoded chip select signals support connection to external DRAM and FLASH memory.

2.2.3 DMA Channels

Six internal DMA channels support memory access for scanner, T.4/ T.6, and resolution conversion. DMA Channel 2 can be reprogrammed for external access to thermal printing, thermal transfer, or plain paper inkjet printing.

2.2.4 External RAM and ROM

Moveable and programmable size external SRAM memory of up to 1 MB, DRAM memory of up to 4 MB, and ROM of up to 2 MB can be directly connected to the SCE209L. By using an external address decoder, the size of SRAM and/or ROM can be extended. The ROM stores all the program object code.

2.2.5 Flash Memory Controller

The SCE209L includes a flash memory controller that supports NOR, NAND, and Serial NAND-type flash memory. The supported size of NOR-type memory is up to 1 MB and the supported size of NAND-type memory is unlimited.

2.2.6 Stepper Motor Control

Eight outputs are provided to external current drivers: four to the scanner motor and four to the printer motor. The stepping patterns are programmable and selectable line times are supported. A time out circuit controls the power control of the motors. The printer or scanner motor outputs can be programmed as GPOs for applications using single motor or paper printers.

2.2.7 T.4/T.6 Compression/Decompression

MH, MR and MMR compression and decompression are provided in hardware. T.4 line lengths of up to 8192 pixels are supported. MMR and Alternating Compression/Decompression (ACD) on a line by line basis provide support for up to three independent compression and decompression processes.

2.2.8 Bi-level Resolution Conversion

One independent programmable bi-level 1D-resolution conversion block is provided to perform expansion or reduction on the T.4 decompressed data and scan image data. Image expansion can be programmed up to 200% and reduction down to 33%. Vertical line O-Ring and data output bit order reversal is also provided.

2.2.9 Printer IF

The Printer Interface provides a standard connection between the SCE209L and a thermal printhead to support thermal printing or thermal transfer. The thermal printer interface consists of programmable data, latch, clock, and up to four strobe signals. Programmable timing supports traditional thermal printers, as well as the latchless split mode printers, and line lengths of up to 2048 pixels. Line times from 5 ms to 40 ms are supported. The SCE209L includes a thermal ADC (TADC) function utilizing a D/A converter and a comparator to monitor the printhead temperature. External terminating resistors must be supplied; the values are determined by the specific printhead selected. As an option, plain paper inkjet printing can be supported.

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UX-B20U/UX-B20C/B25C

2.2.10 Scanner and Video Control

Five programmable control and timing signals support common CCD and CIS scanners. The video control function provides signals for controlling the scanner and for processing its video output. Three programmable control signals (START, CLK1n, and CLK2) provide timing related to line and pixel timing. These are programmable with regard to start time, relative delay and pulse width. Two video control output signals (VIDCTL[1:0]) provide digital control for external signal preprocessing circuitry. These signals provide a per pixel period, or per line period, timing with programmable polarity control for each signal.

2.2.11 Video Processing

The CX06835 supports two modes of shading correction for scanner data non-uniformity arising from uneven sensor output or uneven illumination. Corrections are provided on either an 8-pixel group or are applied separately to each pixel. Dark level correction and gamma correction are also provided. Two-dimensional Error Diffusion/Dithering is performed on halftone images. The CX06835 includes an 8 x 8 dither table, which is programmable and stored internally (8-bit per table entry). The table is arranged in a matrix of 8 rows by 8 columns. The video processing circuit provides mixed-mode detection/processing and multi-level Resolution Conversion for the scanner multi-level data. The conversion ratio of the multi-level Resolution Conversion is fixed to B4-A4 conversion.

2.2.12 Operator Panel Interface

Operation Panel functions are supported by the operator output bus OPO[6:0], the operator input bus OP[3:0], and two control outputs (LCDCS and LEDCTRL). The CX06835 can directly interface to a 28key keypad. A 2-line LCD display module with 20 characters per line can be supported.

2.2.13 Synchronous Serial Interface (SSIF)

One or optionally two Synchronous only Serial Interfaces (SSIF) are built into the CX06835, which allows it to communicate with external peripherals. Each SSIF provides separate signals for Data (SSTXD, SSRXD), Clock (SSCLK), and Status (SSSTAT). Each SSIF is a duplex, three-wire system. The SSIF may be configured to operate as either a master or a slave interface. The bit rate, clock polarity, clock phase, and data shifting order are programmable.

2.2.14 Synchronous/Asynchronous Serial Interface (SASIF)

One or optionally two Synchronous/Asynchronous Serial Interface (SASIF) performs the following:

• Serial-parallel conversion of data received from a peripheral device.

• Parallel-to-serial conversion of data for transmission to a peripheral device.

This interface consists of serial transmit data (SASTXD), serial receive data (SASRXD), and a serial clock(SASCLK). The SASIF includes a programmable bit rate generator for asynchronous and synchronous operations. The data shifting order, data bit number, and the SASCLK polarity are programmable. The optional SASIF 2 has an additional pin called DSS_AVAIL. This signal can be used to tristate the SASCLK2 and SASTXD2 signals.

2.2.15 Real Time Clock (RTC)

The CX06835 includes a battery backup real time clock. The RTC will automatically maintain the proper date and time for 32 years. Leap year compensation is included. A 32.768 kHz or 65.536 kHz crystal is required by the RTC.

2.2.16 Tone Generator (ALT_TONE)

The CX06835 provides a programmable tone generator output. The frequency of the tone generator is programmable from 400 Hz to 4 kHz. By using a PWM programmable high frequency as a modulation frequency, the output level can be made programmable.

2.2.17 Watchdog Timer

The Programmable Watchdog Timer is intended to guard against firmware lockup on the part of either executive-controlled background tasks or interrupt-driven tasks, and can only be enabled by a sequence of events under control of the Watchdog Control Logic. Once the Watchdog Timer has been enabled, it can not be disabled unless a system reset occurs.

2.2.18 Reset and Power Control

The RESETn I/O pin provides an internally generated reset output to external circuits, or it can accept an externally generated reset signal. This reset signal will not reset the RTC. Separate RTC battery power inputs are provided for battery-backup functions. A BATRSTn pin is provided, which resets the RTC circuits and other SCC circuits.

2.2.19 Power Up/Down Control

Power Up/Down detection is provided internally. The threshold voltages are:

• Power Up detection level = 2.83V to 2.95V.

An internally generated power down signal controls internal switching between primary and battery power. This control signal is also provided as an output on the PWRDWNn pin. An externally generated power down detector (optional) can be provided as an input on the PWRDWNn pin by setting the INTPWRDWNEn pin.

2.2.20 Stand-by and Sleep Modes

Two power saving modes are provided to reduce the power consumption. In stand-by mode, the CPU is functional, but the modem clock is turned off to save power. When this occurs, the modem may be activated by software under different conditions. In sleep mode, the clock is cut off from both the modem and the CPU to increase the power savings.

The system can be activated by paper insertion, key pressing events, and telephone ring detection.

2.2.21 Embedded Modem DSP

The embedded modem DSP is a synchronous 9600 bps half-duplex modem with error detection and DTMF generation/reception. It provides data transmission/reception from regular PSTN lines, PBX, or private lines. The modem can operate at any standard V.29 data speed up to 9600 bps as well as in V.21 and V.23 modes. The modem is designed for use in Group 3 facsimile machines. It satisfies the requirements specified in ITU-T recommendations V.29, V.27ter, V.21 Channel 2, and T.4 , and meets the signaling requirements of T.30. It also performs HDLC framing according to T.30 at all speeds.

NOTE: For technical details, refer to the FM209/FM214 Designer’s

Guide, (document 1175).

2.2.22 Software and Firmware Support Features

Available software and embedded firmware provides the following:

• Modem support for speeds up to 9600 bps.

• ECM under conditional assembly.

• DRAM memory support under conditional assembly.

• MH, MR and MMR support.

• Page memory receiving.

• 5 ms minimum scan line time.

• Conditional Error Diffusion or Dither table (8x8) support.

• Dark Level Correction support.

• Single motor support.

• 28-key operator panel support.

• Call progress support for Europe and U.S.A.

• Monochrome inkjet print engine support.

5 – 3

Page 53

SCE209L (IC5) Terminal descriptions

No.

1 VDDPLL — — — PLL Power 2 VSSPLL — — — PLL GND 3 ROMCSn — — 13Xs — 4 SYNC/GPO[20] O — 13Xs — 5 WRn O — 13Xs — 6 RDn O — 13Xs — 7 DEBUGn I Hu — — 8 TSTCLK O — 13Xs — 9 VSS — — — Digital GND 10 SXIN I Osc0 — — 11 SXOUT O — Osc0 — 12 OPO[0]/GPO[8]/SMPWRCTRL O — 13Xs — 13 OPO[1]/GPO[9]/PMPWRCTRL O — 13Xs — 14 OPO[2]/GPO[10]/RINGER OZ — 13Xs — 15 OPO[3]/GPO[11] O — 13Xs — 16 OPO[4]/GPO[12]/SSTXD1 O — 13Xs — 17 OPO[5]/GPO[13] O — 13Xs — 18 OPO[6]/GPO[14] O — 13Xs — 19 OPI[0]/GPIO[21]/SSRXD1 I/O Hu 13Xs — 20 OPI[1]/GPIO[22]/SSSTAT1 I/O Hu 13Xs — 21 OPI[2]/GPIO[23]/SSCLK1 I/O Hu 13Xs — 22 OPI[3]/GPIO[24] I/O Hu 13Xs — 23 LCDCS/GPO[17] O — 1XC — 24 VDD — — — Digital Power 25 RASn O — 13Xs — 26 CAS[0]n O — 13Xs — 27 DWRn O — 13Xs — 28 VBAT — — — RTC Battery Power 29 XIN I Osc1 — — 30 XOUT O — Osc1 — 31 WRPROTn O — 1XC — 32 TEST[1] I Hd — — 33 TEST[0] I Hd — — 34 BATRTSn I H — — 35 INTPWRDWNEn I H — — 36 PWRDWNn I/O H 13Xs — 37N.C. ———— 38 ADGA — VADG — PADC Analog GND 39 VREFn/CLREF I VR- — PADC 40 VIN I VA — PADC 41 ADGA — VADG — PADC Analog GND 42 ADVA — VADV — PADC Analog Power 43 ADXG — VXG — PADC 44 VREFp I VR — PADC 45 VSS — — — VSS Digital GND 46 IVREFn O — VR- PADC 47 IVREFp O — VR+ PADC 48 VDD — — — Digital Power 49 THADI I Analog — TADC 50 VSS — — — Digital GND 51 GPIO[17]/DSPIRQn I/O Hu 13Xs — 52 GPIO[16]/IRQ[8] I/O Hu 13Xs — 53 GPIO[15]/CS[5]n I/O Hu 13Xs — 54 GPIO[13]/CS[3]n I/O Hu 13Xs — 55 GPIO[37]/IRQ15n/DSPCSn I Hu 13Xs — 56 GPIO[4]/CPCIN/TPHPWRCTRL/DMAREG I/O Hu 13Xs — 57 STRB[0] O — 1XC — 58 STRB[1] O — 1XC — 59 STRB[2] O — 1XC — 60 STRB[3] O — 1XC — 61 PLAT O — 3XC — 62 PDAT O — 2XC —

Pin List I/O

Input

Typ e

Output

Typ e

UX-B20U/UX-B20C/B25C

Pin Description

5 – 4

Page 54

UX-B20U/UX-B20C/B25C

SCE209L (IC5) Terminal descriptions

No.

63 PCLK/DMAACK O — 3XC — 64 VDD — — — Digital Power 65 GPIO[11]/BE/SERINP/SR4IN I/O Hu 13Xs — 66 GPIO[19]/RDY/SEROUT I/O Hu 13Xs — 67 START O — 2XC — 68 CLK1n/GPO[25] O — 13Xs — 69 CLK2/GPO[24] O — 13Xs — 70 GND — — — IA GND 71 MCLK ID — — Main Clock from DSP 72 CTRLI ID d — Control Data from DSP 73 TESTC ID d — IA Test 74 SOUT OD — T Serial Data to DSP 75 SIN ID d — Serial Data to DSP 76 FSYNC I/OD d — Frame Sync Signal (IA) 77 POR IA d — Hardware Reset 78 GND — — — IA GND 79 LINE_INP IA — — Analog Input to Line Pre-Amp. 80 MIC_INP IA — — Positive differential Analog Input to Microphone Pre-Amp. 81 MIC_INM IA — — Negative differential Analog Input to Microphone Pre-Amp. 82 MIC_BIAS OA — — 2.2 V Nominal DC Bias Source for Electret Microphone 83 BG OA — — Analog reference Voltage Output 84 VC OA — — Analog Ground Bias Output 85 AVDD PWR — — IA Analog Power 86 GND — — — IA GND 87 LINE_OUTP OA — — Line Driver Output 88 SPKR_OUTP OA — — Positive Speaker Driver Output 89 SPKR_OUTM OA — — Negative Speaker Driver Output 90 DVDD PWD — — IA Digital Power 91 MODE_0 ID u — Connect to VSS (IA Mode Selection) 92 ICLK I/OD — — IA Bit Clock Input/Output 93 VSS — — — VSS Digital GND 94 FCSn[1]/VIDCTL[0]/GPO[23] O — 13Xs — 95 IARESET O — 13Xs DSP to EXTIA POR 96 IACLK O — 13Xs DSP to EXTIA MCLK 97 VDD — — — Digital Power 98 IA1CLK I H — DSP from EXTIA ICLK 99 SR3IN/DSPIRQn I H — DSP from primary EXTIA SOUT/EXT. Modem IRQn 100 SR4OUT O — 13Xs DSP to primary EXTIA SIN 101 SR1IO O — 13Xs DSP to EXTIA CTRL1 102 SA1CLK I H — DSP from EXTIA FSYNC 103 GPIO[7]/SSRXD2/SASRXD2 I/O Hu 13Xs — 104 GPIO[6]/SSTXD2/SASTXD2 I/O Hu 13Xs — 105 GPIO[5]/SSCLK2/SASCLK2 I/O Hu 13Xs — 106 GPIO[10]/SSSTAT2/DSS_AVAIL I/O Hu 13Xs — 107 VSS — — — Digital GND 108 RESETn I/O Hu 2XC — 109 GPIO[3]/SASCLK I/O Hu 13Xs — 110 GPIO[2]/SASRXD I/O Hu 13Xs — 111 GPIO[1]/SASTXD I/O Hu 13Xs — 112 GPIO[9]/FRDn I/O Hu 13Xs — 113 GPIO[8]/FWRn I/O Hu 13Xs — 114 A[0] I/O Tu 13Xs CPU Address Bus 115 A[1] I/O Tu 13Xs CPU Address Bus 116 A[2] I/O Tu 13Xs CPU Address Bus 117 A[3] I/O Tu 13Xs CPU Address Bus 118 A[4] I/O Tu 13Xs CPU Address Bus 119 VDD — — — Digital power 120 A[5] I/O Tu 13Xs CPU Address Bus 121 A[6] I/O Tu 13Xs CPU Address Bus 122 A[7] I/O Tu 13Xs CPU Address Bus 123 A[8] I/O Tu 13Xs CPU Address Bus 124 A[9] I/O Tu 13Xs CPU Address Bus

Pin List I/O

Input

Typ e

Output

Typ e

Pin Description

5 – 5

Page 55

SCE209L (IC5) Terminal descriptions

No.

125 A[10] I/O Tu 13Xs CPU Address Bus 126 A[11] I/O Tu 13Xs CPU Address Bus 127 A[12] I/O Tu 13Xs CPU Address Bus 128 A[13] I/O Tu 13Xs CPU Address Bus 129 A[14] I/O Tu 13Xs CPU Address Bus 130 A[15] I/O Tu 13Xs CPU Address Bus 131 A[16] I/O Tu 13Xs CPU Address Bus 132 VDD — — — Digital Power 133 VSS — — — Digital GND 134 A[17] I/O Tu 13Xs CPU Address Bus 135 A[18] I/O Tu 13Xs CPU Address Bus 136 A[19] I/O Tu 13Xs CPU Address Bus 137 A[20] I/O Tu 13Xs CPU Address Bus 138 A[21]/EYECLK I/O Tu 13Xs CPU Address Bus 139 A[22]/EYESYNC I/O Tu 13Xs CPU Address Bus 140 A[23]/EYEXY I/O Tu 13Xs CPU Address Bus 141 D[0] I/O Tu 13Xs CPU Data Bus 142 D[1] I/O Tu 13Xs CPU Data Bus 143 D[2] I/O Tu 13Xs CPU Data Bus 144 D[3] I/O Tu 13Xs CPU Data Bus 145 D[4] I/O Tu 13Xs CPU Data Bus 146 D[5] I/O Tu 13Xs CPU Data Bus 147 D[6] I/O Tu 13Xs CPU Data Bus 148 D[7] I/O Tu 13Xs CPU Data Bus 149 GPIO[20]/ALTTONE I/O Hu 13Xs — 150 GPIO[26] I/O Hu 13Xs — 151 GPIO[27] I/O Hu 13Xs — 152 GPIO[28] I/O Hu 13Xs — 153 GPO[26] O — 13Xs — 154 GPO[27] O — 13Xs — 155 GPO[28] O — 13Xs — 156 GPO[29] O — 13Xs — 157 GPO[30]/SR3OUT O — 13Xs — 158 GPIO[29] I/O Hu 13Xs — 159 GPIO[31] I/O Hu 13Xs — 160 GPIO[32] I/O Hu 13Xs — 161 VDD — — — Digital power 162 GPIO[34] I/O Hu 13Xs — 163 GPIO[35] I/O Hu 13Xs — 164 GPIO[36] I/O Hu 13Xs — 165 Vss — — — Digital GND 166 VDD — — — Digital Power 167 PM[0]/GPO[0] O — 13Xs — 168 PM[1]/GPO[1] O — 13Xs — 169 PM[2]/GPO[2] O — 13Xs — 170 PM[3]/GPO[3] O — 13Xs — 171 SM[0]/GPO[4] O — 13Xs — 172 SM[1]/GPO[5] O — 13Xs — 173 SM[2]/GPO[6] O — 13Xs — 174 SM[3]/GPO[7] O — 13Xs — 175 REGDMA/GPO[18]/CLKDIV[0] I/O T 13Xs — 176 WAITn/GPO[19]/CLKDIV[1] I/O T 13Xs —

Pin List I/O

Input

Typ e

Output

Typ e

UX-B20U/UX-B20C/B25C

Pin Description

5 – 6

Page 56

UX-B20U/UX-B20C/B25C

2.3. Panel control block

The following controls are performed by the SCE209L.

• Operation panel key scanning

• Operation panel LCD display

2.4. Mechanism/recording control block

• Recording control block diagram

THUNDERBOLT

DRAM

TBRESN CSN SCK SDI

CLK DWEN

CAS_N RAS_N D[15:0] A[11:0]

OPERATOR

PANEL,

KEYPAD,

LCD

µPD65944

SCANNER

MOTOR DRIVERS

SCANNER

CONTROLS

SCANNER

VIDEO

PREPROCESSING

SERIAL SYNC

PORTS

(SSIF)

OPO[4:0]* OPI[3:0]*

LCDCS*

CLOCK

INTN

WAIT

ASICRES

GACSN

RDN

WRN

PDAT PCLK PLAT A[5:0] D[7:0]

SM[3:0]*

START CLK2

VIN

SSCLK[2:1]* SSTXD[2:1]* SSRXD[2:1]* SSSTAT[2:1]*

SCE209L

1-CHIP

FAX ENGINE

TEST[1:0] BATRSTN RESETN

TONE ALTTONE TSTCLK REGDMA WAITN SYNC PWRDWNN INTPWRDWNEN XIN XOUT

SXIN SXOUT

A[23:0] D[7:0] RDN WRN ROMCSN

CS[5:0]N*

RTC

CRYSTAL

SYSCLK

CRYSTAL

INTERNAL

EXTERNAL BUS

CAS[0,1]N, RASN, DWRN

RXIN TXOUT

FLASHWRN

RDN

ROMCSN

TELEPHONE LINE

LINE

INTERFACE

FLASH

MEMORY

DRAM

PHD[3:0]

LHCS, LCN, PLAD, PENABLE

SPERSN, ACLK, AGATE, PCLK

INK

PWB

OK2PRT, POS, PHID1

PURPOSE I/O

SYNC/ASYNC SERIAL PORT

PIN SENSOR

SASIF

GPIOGENERAL

SASCLK* SASTXD*

SASRXD*

Fig. 3

5 – 7

DEBUGN VDD VDRAM VBAT VSS ADVA ADGA

NOTES: * ALTERNATIVE GPO, GPI OR GPIO LINES

**FOR SAMSUNG NAND-TYPE FLASH

Page 57

UX-B20U/UX-B20C/B25C

2.5. Modem block (CX06835)

2.5.1 Integrated Analog Control Resisters for CX06835

The CX06835 IA can be used as a Primary Integrated Analog (PIA) codec or as a Secondary Integrated Analog (SIA) codec, depending on the signal connection with the SCE Controller ASIC device. In the SCE100 product, both the PIA and the SIA are packaged external to the SCE Controller device, whereas in the SCE209, the PIA is packaged with the SCE209 Controller and the SIA is external.

The CX06835 IA provides gain, filtering, internal analog switching, and an internally sourced microphone bias output. The IA is controlled by three control registers and an address register located in internal RAM space which are accessed via the modem interface memory. These registers provide individual controls for the IA’s inputs, outputs, gain settings, and switching.

The registers are located in internal DSP RAM. Each bit of each 8-bit IA control register has exactly the same meaning for the PIA and the SIA. The LSB of each 16-bit address contents is used to control the PIA. The MSB of each 16-bit address contents is used to control the SIA.

The following table the PIA/SIA control register RAM access code.

IACR1 00000D001 IACR2 00000D401 IACR3 00000D501 IAADD 00000CE0, 10, 1 NOTES: *Registers to use when x=1. When x=2, add 10h.

• For changes made to IACR1 to be effective, the host must write to IAADD with a value of 0002h.

• For changes made to IACR2 to be effective, the host must write to IAADD with a value of 0006h.

• For changes made to IACR3 to be effective, the host must write to IAADD with a value of 0007h.

Configuration default values are shown below.

DEFAULT VALUE

CONFIGURATION IACR1 IACR2 IACR3

V.17/V.33 1D9Eh 0008h 0000h V.29 1D9Eh 0008h 0000h V.27ter 1D9Eh 0008h 0000h V.21 Ch. 2 1D9Eh 0008h 0000h V.23/Caller ID 1D9Eh 0008h 0000h Tone Transmit/Detect 1D9Eh 0008h 0000h Voice/Audio Codec 0D16h 0008h 0000h Speakerphone 0D16h 0008h 0000h

The following signal flow block diagram is for a signal IA and it applies to both PIA and SIA.

MICP

MICM

LINEIN

LINE OUT

SPKRP

SPKRM

LINE IN ENABLE MIC ENABLE

GAIN

MIC/LINE SELECT

0, 20, 25, 30 dB(MIC IN)

0dB(LINE IN)

LINE OUT ENABLE

LINE

DRIVER

Mute, 0, -6, -12 dB

SPEAKER

DRIVER

SPEAKER OUT ENABLE

LPF ADC

(1,0) (1,1)

LINE IN

SELECT

Loop

(1,1)

(1,0) (0,1)

(0,0)

0, +4 dB

DAC

0,6dB

SOUT

SIN

Fig. 4 PIA/SIA Signal Flow Control

5 – 8

Page 58

UX-B20U/UX-B20C/B25C

2.6. IC4 (µPD65945) Hardware description

2.6.1 Entire Mechanism Sequence Controller

Depending on data processing of the entire ASIC, this controller manages the following automatic drive sequences:

• Power-on/reset sequence

• CAP position check sequence

• CAP position movement sequence 1

• CAP position movement sequence 2

• Cartridge replacement sequence 1 (movement to replacement position)

• Cartridge replacement sequence 2 (return to the CAP position)

• Print sequence

• Next page print sequence

• Head failure check sequence

• Cartridge ID check sequence

When Fax Engine sends a motor drive command, this controller activates the motor control circuit after automatic drive sequences to control the motor.

2.6.2 Serial Data Receiving Circuit

This circuit stores received serial print data in the input buffer. It receives data (PDAT) using a 16-bit shift register when the clock (PCLK) is activated and then writes the data to the buffer by every 16 dots (2 bytes).

Input data is fixed to 216 bytes (1728 dots) per line, and the maximum serial transfer frequency is 3.3 MHz.

When Fax Engine sends a page break command (Page End register =

1), this circuit adds Flag Word (data indicating the last line of a page)

after to the last piece of data.

2.6.3 Input Buffer

This buffer uses 384 kWord of memory space for receiving serial data. It is based on a FIFO system and equipped with an address counter.

This buffer also has a determining circuit to show the FIFO status (FULL, NEARFULL or EMPTY).

2.6.4 Enlargement/Reduction/Resolution Conversion Cir-

cuit

This circuit reads data from the input buffer and enlarges or reduces image data dot by dot. Based on SHARP’s conversion algorithm (oversampling technique), this process has made it possible to enlarge/ reduce the length and width individually with the following register setting: horizontal scanning direction KH (15:0) and vertical scanning direction KV (16:0).

Along the horizontal scanning direction, this circuit removes right and left dots after enlargement, and fills right and left space with white dots after reduction to send the center of images (centering).

After conversion, there are 4800 dots (fixed value) along the horizontal scanning direction. 16 extra white dots are inserted at the right and left edges for 16-dot long odd and even nozzles of the cartridge head. In total, 4832 dots are sent per line.

To make voids (margins) at the right and left edges, this circuit masks dots on both sides individually (in white) according to the register setting from Fax Engine (maximum dots: 255 on the left, and 511 on the right). After converted in both scanning directions, image data is stored in the print buffer. When converting a swath of data, this circuit sends a notification to the entire mechanism sequence controller. It identifies Flag Word (indicating a page break) on each line. If some sections have less than a swath (208 lines) of data on the last page, this circuit fills them with white dots.

In the ink save mode, output data is equivalent to 300 dpi of the vertical scanning.

2.6.5 Split Printing/White Skip Measuring Circuit

This circuit monitors data which is converted by the enlargement/ reduction/resolution conversion circuit to be written to the print buffer to calculate the number of print dots. 4800 dots for horizontal scanning are divided into 8 areas (600 dots per each) and the calculation is made for each area.

This circuit sends the split printing status when detecting an area with 62400 (600 x 208 divided by 2) dots or more, and sends the white skip status if there are no dots in any areas.

The status is sent to the enlargement/reduction/resolution conversion circuit and then reflected in Flag Word. This circuit checks Flag Word when starting the swath printing, and performs the split printing or white skip operation accordingly using Spitfire controller or the entire mechanism sequence controller.

2.6.6 Print Buffer

This buffer stores image data which is converted to 600 dpi x 600 dpi by the enlargement/reduction/resolution conversion circuit. This buffer sends a notification to notifies the entire mechanism sequence controller when detecting a swath (208 lines) of data. When the entire mechanism sequence controller sends a release command, this buffer frees memory space for a swath of image data.

2.6.7 Spitfire controller

When the entire mechanism sequence controller sends a print start command, this controller controls Spitfire by reading data dot by dot from the print buffer and converting the length and width according to the head alignment.

When receiving a split printing command, this controller masks odd and even slice data in white to send to the first and second paths respectively.

Also, it counts dots when sending data to Spitfire to calculate the number of dots per swath.

2.6.8 Carriage Motor Control Circuit

This circuit drives the carriage motor by controlling Thunderbolt according to the motor acceleration/deceleration table. The carriage motor drives by steps specified by the entire mechanism sequence controller in the order of “Still”, “Acceleration”, “Constant”, and “Deceleration”.

Moreover, the motor drives by specified steps at a constant speed when the home position detection sensor is switched ON/OFF, and then decelerates to stop. The carriage is stopped at a fixed distance after the sensor is switched, which has made it possible to identify its position at the time of initialization.

2.6.9 Feeder Motor Control Circuit

This circuit drives the feeder motor by controlling Thunderbolt according to the motor acceleration/deceleration table. The feeder motor drives by steps specified by the entire mechanism sequence controller in the order of “Still”, “Acceleration”, “Constant”, and “Deceleration”.

Moreover, the motor drives by specified steps at a constant speed when the recording paper detection sensor is switched ON/OFF, and then decelerates to stop. The motor is stopped at a fixed distance after the sensor is switched, which has made it possible to locate the beginning of the recording paper.

2.6.10 Thunderbolt Interface Circuit

This circuit receives control signals from the carriage motor control circuit and the feed motor control circuit, and converts them to serial signals to send to the motor driver IC (Thunderbolt).

Using its head power circuit, this circuit controls the head power ON/ OFF bit in serial signals (converts to serial signals).

5 – 9

Page 59

2.6.11 Fax Engine Bus Interface

This interface has a bridging function for connecting the external bus of Fax Engine LSI and the internal bus of ASIC. Due to the system clock condition, 1WAIT or more must be set to activate Fax Engine.

2.6.12 Interrupt Controller

This controller logs major causes of interruption in the ASIC and sends interrupt signals according to the interrupt status of the Fax Engine firmware (allowed or prohibited). The causes can be cleared or stored. External interrupt to Fax Engine is generated at L active level.

2.6.13 Memory Access Arbiter

This arbiter arbitrates memory access from each buffer. There are 7 access channels. The arbitration is controlled by priority to maintain the data transfer rate of the data output channel to the head.

After arbitration, this arbiter notifies the SDRAM controller of memory addresses and access types and then waits until memory access is completed.

UX-B20U/UX-B20C/B25C

2.6.14 SDRAM Controller

This controller accesses the memory by controlling the read cycle, write cycle, and AUTO refresh cycle of a 16-bit wide 16Mbit Synchronous DRAM.

A refresh cycle is automatically inserted by distributed refresh executed every 15.6µs (maximum), and when initialization sequence is performed after reset.

2.6.15 Sensor Detection Circuit

For home position sensor input and paper detection sensor input, this circuit eliminates noises such as chattering. The detection method is based on multiple sampling (sequential matching). The sampling clock is 1.008 MHz and detection time in the register setting should be approximately between 2µs ~ 65 ms, and can be set for the rising edge and the falling edge individually.

Serial Data I/F

Serial Data

Receiving

Circuit

Input Buffer

384kWord

Enlargement/

Reduction/ Resolution

Conversion Circuit

Print Buffer

512kWord

Spitfire

controller

Fax Engine

Fax Engine Bus I/F

Interrupt

Controller

Split Printing/

White Skip

Measuring Circuit

Carriage Motor

Control Circuit

Fax Engine

Bus Interface

Registers

Memory

Access

Arbiter

White Skip indication

Split Printing indication

Feeder Motor

Control Circuit

System Clock

32.256MHz

PrinterASIC

Test etc.

SDRAM

Controller

Entire

Mechanism

Sequence

Controller

Sensor

Detection

Circuit

Memory

Bus

x16 SDRAM

16Mbit

Motor table

128kWord

Input Buffer

384kWord

Print Buffer

512kWord

Serial Control I/F

Spitfire-LSI

Ink Cartridge

(208 Heaters)

Thunderbolt I/F

Serial Control I/F

Thunderbolt Sensors

Carrier

Motor

Feed

Motor

Fig. 5

5 – 10

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UX-B20U/UX-B20C/B25C

µPD65945 (IC4) Pin descriptions

SYMBOL PIN NO. I/O DESCRIPTION PAD CELL. NOTE

System Operation Signals (3 pin)

XIN 75 I X’tal in OSI1 32.256 MHz XOUT 74 O X’tal out OSO1 ASICRES 70 I Reset

L: Operate H: Reset

SYMBOL PIN NO. I/O DESCRIPTION PAD CELL. NOTE

Fax Engine Bus Interface (21 pin)

SYSCLK 83 O System clock for Fax Engine FE04 32.256 MHz Output A0 104 I Address bus A1 103 I FI01 A2 102 I FI01 A3 101 I FI01 A4 100 I FI01 A5 99 I FI01 D0 95 I/O Data bus D1 94 I/O B00C D2 93 I/O B00C D3 92 I/O B00C D4 91 I/O B00C D5 90 I/O B00C D6 89 I/O B00C D7 88 I/O B00C CS_N 68 I Chip select

RD_N 106 I Read strobe

WR_N 107 I Write strobe

INT_N 67 O Interrupt

RDY 61 O External Wait

SCANSYNC 60 I Scanner Motor Sync. Signal

L: Logic 0 H: Logic 1

L: Select H: Deselect

L: Read

L: Write

L: Interrupt Hi-Z: No Interrupt

L: Wait Hi-Z: Ready

Rise: Sync.

FIS1 Schmitt

FI01

B00C

FI01 Schmitt

EXTH Open Drain

FISI Schmitt

SYMBOL PIN NO. I/O DESCRIPTION PAD CELL. NOTE

Thunderbolt Control Interfaces (4 pin)

SCS_N 141 O Chip Select FO09 SCLK 142 O Clock FO09 SDAT 140 O Data FO09 SRST_N 133 I Reset FISI Schmitt

SYMBOL PIN NO. I/O DESCRIPTION PAD CELL. NOTE

Spitfire Control Signals (14 pin)

SFRES_N 127 O Reset FE04 ACLK 130 O A-Line Counter Clock FE04 AGATE 129 O Reset A-Line to Low FE04 PLCLK 128 O Shift Clock for P-Line Data FE04 PDATA0 120 O Serial Data Output#0 FE04 PDATA1 119 O Serial Data Output#1 FE04 PDATA2 118 O Serial Data Output#2 FE04 PDATA3 117 O Serial Data Output#3 FE04 PLOAD 113 O Latches into Holding Reg. FE04 PENABLE 114 O Enables P-Line Output Drive FE04 LCN 111 O Latch Control Register FE04 LHCS 112 O Latch Heater States FE04 OK2PRT 125 I P-Line Driver Status FISI Schmitt PHID 126 I Print Head ID Compare Status FISI Schmitt

5 – 11

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UX-B20U/UX-B20C/B25C

µPD65945 (IC4) Pin descriptions

SYMBOL PIN NO. I/O DESCRIPTION PAD CELL. NOTE

Sensor Signals (2 pin)

POS 124 I Home position Sensor Input

L: No Position H: Home Position

PIN_N 47 I Paper-in Sensor Input

L: Paper Exist H: No Paper

SYMBOL PIN NO. I/O DESCRIPTION PAD CELL. NOTE

Test Pins (10 pin)

SCK 136 I Scan clock AMC 138 I SMC 135 I Scan mode control SIN 137 I Scan in FDS1 SOT 139 O Scan out FO09 TM0 51 I Test mode select TM1 52 I FDS1 Schmitt+Pull Down TM2 53 I FDS1 Schmitt+Pull Down

LLL: Normal operation Else: Test/Debug operations

FIS1 Schmitt

FDS1 Schmitt+Pull Down

TEST 50 I Test mode enable

L: Normal operation H: Test mode

DEBUG 54 O Debug output FO09

SYMBOL PIN NO. I/O DESCRIPTION PAD CELL. NOTE

Power/Ground Pins (55 pin)

VDD 1,10,25,

36,56,57, 73,76,79, 80,86,87,

98,108,

121,134

GND 11,20,21,

23,24,37,

3845,46, 48,49,55, 58,59,62, 63,69,71, 72,77,78, 81,82,84, 85,96,97,

105,109,

110,115,

116,122,

123,131,

132,143,

144

- Power +3.3V -

- Ground -

FDS1 Schmitt+Pull Down

SYMBOL PIN NO. I/O DESCRIPTION PAD CELL. NOTE

Serial Data Interface (3 pin)

PCLK 64 I Serial clock FIS1 Schmitt PDAT 65 I Serial data

L: White Dot H: Black Dot

PLAT 66 I Serial data latch strobe

(Negative Pulse)

FIS1 Schmitt

5 – 12

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UX-B20U/UX-B20C/B25C

µPD65945 (IC4) Pin descriptions

SYMBOL PIN NO. I/O DESCRIPTION PAD CELL. NOTE

SDRAM Bus Interface (33 pin)

RA0 35 O Address bus RA1 34 O FO09 RA2 33 O FO09 RA3 32 O FO09 RA4 31 O FO09 RA5 30 O FO09 RA6 29 O FO09 RA7 28 O FO09 RA8 27 O FO09 RA9 26 O FO09 RA10 39 O FO09

L: Logic-0 H: Logic-1

FO09

RB 40 O Black select

L: Bank-0

H: Bank-1 RD0 9 I/O Data bus RD1 8 I/O B00U RD2 7 I/O B00U RD3 6 I/O B00U RD4 5 I/O B00U RD5 4 I/O B00U RD6 3 I/O B00U RD7 2 I/O B00U RD8 19 I/O B00U RD9 18 I/O B00U RD10 17 I/O B00U RD11 16 I/O B00U RD12 15 I/O B00U RD13 14 I/O B00U RD14 13 I/O B00U RD15 12 I/O B00U

RCS_N 41 O Chip select

RRAS_N 42 O Command/Control RCAS_N 43 O FO09 RWE_N 44 O FO09 PCLK 22 O SDRAM operation clock FE04 32.256 MHz

L: Logic-0

H: Logic-1

L: Select

H: Deselect

L: Active

H: In Active

FO09

B00U

FO09

5 – 13

Page 63

2.7. IC10 (PLCC44) Hardware description

This specfication describes a multifunction analog ASIC to be used in inkjet printer applications. This ASIC integrates two Switching Voltage Regulator circuits, two motor drive circuits and a Reset circuit in a single IC.

The functions implemented are:

• Two DC-to-DC converters providing the following voltages from an unregulator input of +21 volts to +42 volts DC:

• VCC Voltage Regulator circuit - A buck type switching regulator

• VPH Voltage Regulator circuit - A buck type switching regulator

using a MOSFET (internal to the ASIC), current sense resistor (internal to the ASIC), Schottky diode (external to the ASIC), external inductor and filter capacitor. This converter is to have a programmable output voltage (by means of an external resistor divider network) in the range of +10 volts to +15 volts, +/2% with a VBULK input voltage range of +21 volts to +42 volts. With VPH = +11.75 volts the load current is 10 ma.(min.), 1amp. (max./ave.) with a peak of 1300 ma. (peak/ave.) for 400 ms. The VPH regulator shall have a ENABLE bit in the serial register that allows software to turn on and off this converter.

• The ENABLE bit when set low shall place this ASIC into its low-

est stand-by power mode in order to minimize idle power. The VCC regulator is not effected by ENABLE bit.

• Two Motor Drivers:

• Both Motor Drivers are to be selectable as EITHER a bidirection

DC motor driver with PWM control with peak currents of 2.0 amps and RMS currents of TBD mA or a Bipolar stepper motor driver with current levels (average) of 183 ma., 367 ma. and 550 ma. per phase with quarter step mode capability. In stepper mode both drivers shall be capable of being operated in the quarter step mode.

• nRESET Generation

All ASIC input control lines are to be compatible with CMOS type +3.3 volts and +5 volts logic.

UX-B20U/UX-B20C/B25C

PLCC44 (IC10) Pin descriptions

NO.

1 VCP (Capacitor VBULK) 2 CP2 (Capacitor to CP1) 3 CP1 (Capacitor to CP2) 4 nRESET Reset Port 5 VCC VCC Supply Voltage 6 GND Substrate Ground 7 GND Substrate Ground 8 VCC_FB VCC Regulator Feedback Input 9 MD1_MODE Mode Select for Motor Driver MD1

10 VCC_SOURCE Source of internal MOSFET for VCC

11 VBULK VBULK Supply Voltage 12 MD2_OUT_A+ MD2-Motor Driver Output a Plus 13 MD_R_SENSE_A MD2-Output A Current Sense Resistor 14 MD2_OUT_A- MD2-Motor Driver Output A Minus 15 VBULK VBULK Supply Voltage 16 VBULK VBULK Supply Voltage 17 GND Substrate Ground 18 GND Substrate Ground 19 MD1_OUT_A+ MD!-MOtor Driver Output A Plus 20 MD1_R_SENSE_A MD1-Output A Current Sense Resistor 21 MD1_OUT_A- MD1-Motor Driver Output A Minus 22 MD1_DCM_PWM MD1_DC Motor Driver PWM Input 23 VBULK VBULK Supply Voltage 24 MD2_DCM_PWM MD2-DC Motor Driver PWM Input 25 MD1_OUT_B- MD1-Motor Driver Output B Minus 26 MD1_R_SENSE_B MD1-Output B Current Sense 27 MD1_OUT_B+ MD1-Motor Driver Output B Plus 28 GND Substrate Ground 29 GND Substrate Ground 30 VBULK VBULK Supply Voltage 31 VBULK VBULK Supply Voltage 32 MD2_OUT_B- MD2-Motor Driver Output B Minus 33 MD2_R_SENSE_B MD2-Output B Current Sense Resistor 34 MD2_OUT_B+ MD2-Motor Driver Output B Plus 35 VBULK VBULK Supply Voltage 36 VPH_SOURCE Source of internal MOSFET for VPH

37 MD2_MODE Mode Select for Motor Driver MD2 38 VPH_FB VPH Regulator Feedback Input 39 GND Substrate Ground 40 GND Substrate Ground 41 SDI Serial Port Data Input 42 SCLK Serial Port Clock 43 nCS Serial Port Chip Select 44 AGND Analog Ground

PIN NAME PIN DESCRPTION

Regulator

5 – 14

Page 64

UX-B20U/UX-B20C/B25C

[3] Circuit description of LIU PWB

1. LIU block operational description

1.1. Block diagram

LINE

HANDSET

LIU PWB CONTROL PWB

IC101C

IC6

IC101A

OP AMP

SPMUTE

(H:MUTE)

IC101B

OP AMP

TXOUT

RXIN

OP AMP

SIGTX

SPOUT

+24V

+5V

DGDG

OP AMP

SIGRX MICP

TELMUTE

OP AMP

IC101D OP AMP

CML

CI DETECTOR

(H:MUTE)

SPEAKER

SPKRP

SPKRN

LINEOUT

DTMFMUTE RCVOL SPMUTE TELMUTE MICMUTE CI CML RHS

(20438 I/A)

IC4 UPD65945

ASIC

SP Out Enable

Mic Enable

Mic/

Line

Sel

0,20dB

ect

Line In Enable

Line Out Enable

Mute,0,-6,-12dB

RTLoop

0,0 1,1

LPF

LninSel

1,1 0,0

IC5 SCE209L FAX ENGINE

DAC SIN

ADC

SOUT

1.2. Circuit description

The LIU PWB is composed of the following 7 blocks.

1. Speech circuit section

2. Dial transmission section

3. Speaker amplifier section

4. Ringer circuit section

5. CI detection circuit

6. Signal/DTMF transmission level & receiving level

7. Power supply and bias circuit

Fig. 6

1.3. Block description

1. Speech circuit section

• The receiver volume is an electronic volume type, this model is switched in 3 steps.

2. Dial transmission section

• D.P. transmission: The CML relay is turned on and off for control in the DP calling system. (Refer to the attached sheet.)

• DTMF transmission: It is formed in the modem, and is output.

3. Speaker amplifier section

• Ringer volume:It is controlled by the combination of the attenuator value of the LINE DRIVER in the modem and the ringer sending level sent from the modem.

• Speaker volume:It is controlled by the attenuator value of the LINE DRIVER in the modem.

4. Ringer circuit section

• The ringer sound is formed in the tone of modem when CI signal is detected. The amplifier circuit drives the speaker of the main body.

5. CI detection circuit

• CI is detected by the photo coupler which is integrated in series in the primary side TEL circuit well proven in the existing unit.

5 – 15

Page 65

6. Signal/DTMF transmission level & receiving level

• Signal transmission level setting: ATT -8 dB Circuit output: -11.5 dBm.

• DTMF transmission level setting: HF -2.5 dBm SLF -4.0 dBm Thus, set the level.

7. Power supply and bias circuit

• The voltage of +5 V and +24 V are supplied from the control PWB unit.

UX-B20U/UX-B20C/B25C

1.4. Signal selection

The following signals are used to control the transmission line of TEL/ FAX signal. For details, refer to the signal selector matrix table.

[Control signals from output port]

Signal Name Description

CML Line connecting relay and DP generating relay

SP MUTE Speaker tone must control signal

TELMUTE Handset reception mute control signal

RCVOL

DTMFMUTE

(Example: SENDING/RECEIVING)

LINE

HANDSET

H: Line make L: Line break

H: Muting L: Muting cancel

Speaker volume control signal

RCVOL

High

Middle

Low & DTMF

CML

CI DETECTOR

TELMUTE

(H:MUTE)

TELMUTE

(H:MUTE)

SPEAKER

DPMFMUTE

OP AMP

IC101D

OP AMP

IC101C

LIU PWB CONTROL PWB

IC101A

OP AMP

TXOUT

IC101B

OP AMP

IC6

SPMUTE

(H:MUTE)

RXIN

[Signals for status recognition according to input signals]

Signal Name Function

RHS- H: The handset is in the on-hook state.

L: The handset is in the off-hook state.

CI- Incoming call (CI) detection signal.

[Other signals]

Signal Name Function

TEL IN Receiving signal from line or modem. SPOUT Speaker output signal. TXOUT Transmission (DTMF) analog signal output from

modem.

RXIN Reception (DTMF, others) analog signal input into

modem.

NO Signal Name (CNLIU) NO Signal Name (CNLIU)

1+24V 7TELMUTE 2ADG 8RXIN 3ADG 9TXOUT 4 +5V 10 CML 5RHS- 11CI6TELIN 12MICMUTE

(20438 I/A)

OP AMP

SIGTX

SPOUT

+24V

+5V

DGDG

OP AMP

SIGRX MICP

SPKRP

SPKRN

LINEOUT

DTMFMUTE RCVOL SPMUTE TELMUTE MICMUTE CI CML RHS

IC4 UPD65945

ASIC

SP Out Enable

Mic Enable

Mic/

Line

Sel

0,20dB

ect

Line In Enable

Line Out Enable

Mute,0,-6,-12dB

RTLoop

0,0 1,1

LPF

LninSel

1,1 0,0

IC5 SCE209L FAX ENGINE

DAC SIN

ADC

SOUT

: FAX SENDING/RECEVING

Fig. 7

5 – 16

Page 66

UX-B20U/UX-B20C/B25C

[4] Circuit description of power supply PWB

1. Block diagram

This power supply unit has the function to convert the AC 120 V (60 Hz) to DC 5 V, and provide these outputs to the equipment. The following explains the function of each block.

INPUT

(2) (3)

FILTER

CIRCUIT

BLOCK

RECTIFICATION

AND SMOOTHING

CIRCUIT BLOCK

(4)

SWITCHING

(5)

CONTROL

CIRCUIT BLOCK

CIRCUIT

BLOCK

2. Filter circuit block

This circuit reduces the outgoing noise through the input lines which is generated in the power supply unit, and prevents the invasion of the noise from the lines.(the excessive surge such as the thunder is prevented by the varistor(Z1).)

3. Rectification and smoothing circuit block

This circuit rectifies and smoothes the AC input, and provides the DC voltage to the switching circuit block.

4. Switching circuit block

This circuit converts the DC voltage (provided from the Rectification and smoothing circuit block) to the high frequency pulse voltage by FET(Q1)’s switching (on/off repeat), and provides the energy to the transformer(T1). It discharges the energy (charged during the FET ON time) to the secondary side during the FET OFF time through the secondary windings. The output voltage on the secondary side provided by the energy depend on the ratio of the winding turns (primary : secondary) etc.

TRANSFORMER

PHOTO-COUPLER

(6)

+30V CIRCUIT

BLOCK

(7)

+5V CIRCUIT

BLOCK

Fig.8

5. Control circuit block

This circuit block controls the output voltage by transmitting the detected +5 V voltage to the primary control circuit through the photocoupler(PC1). In case of the over-current, this circuit reduces providing the energy to the transformer. In case of the over-voltage, this circuit reduces providing the energy to the transformer by letting the Power-Zener(D104; connected between the +30 V output voltage and GND) into the short mode and letting the over-current protection circuit work.

6. +30V circuit block

This circuit block rectifies and smoothes the high-frequency pulse voltage provided by the transformer, and provides the DC +30 V output to the equipment.

7. +5V circuit block

This circuit block rectifies and smoothes the high-frequency pulse voltage provided by the transformer, and provides about DC +5 V output to the equipment. The output voltage is adjusted by the variable resistor (VR101).

+30V

+5V

GND

[5] Circuit description of CIS unit

1. CIS

Cis is an image sensor which puts the original paper in close contact with the full-size sensor for scanning, being a monochromatic type with the pixel number of 1,728 dots and the main scanning density of 8 dots/mm.

It is composed of sensor, rod lens, LED light source, light-conductive plate, control circuit and so on, and the reading line and focus are previously adjusted as the unit.

Due to the full-size sensor, the focus distance is so short that the set is changed from the light weight type to the compact type.

2. Waveforms

The following clock is supplied from SCE209L of the control board, and VO is output.

5 – 17

ΦT

CISCLK

2µs

5ms

Fig.9

Approx.3.3V

0.6V~2.6V (White original paper)

Page 67

FAXUX-B20U/UX-B20C/B25CService ManualService ManualMarketE

CHAPTER 6. CIRCUIT SCHEMATICS AND PARTS LAYOUT

[1] Control PWB circuit

1. Main Control Block (1/8)

(4-3A)

1/8

C123

+3.3V

Main Control Block

(4-4A)

(2-6A)

A[18:0]

(2-5A)

(4-3A)

D[7:0]

D0 D1 D2 D3

D4 D5 D6 D7

C30

C192

1u/10V

C14

C13

C194

1u/10V

C130

1u/10V

+3.3V

6 6

141 142 143 144

145 146 147 148

<L>

108

<K>

<M>

165

133

107

1u/10V

166

161

132

119

C128

1u/10V

C129

C131

1u/10V

38 41

R202 33

R200 33

R201 33

RA16 33

A18

A17

A13

A14

A16

A12A9A15

234

<C>

<A>

<D>

<F>

<B>

<E>

140

139

138

137

136

135

134

131

130

129

128

A19

A18

A17

A16

SXIN10SXOUT

CLOCK

(4-2A)

127

A15

A14

A13

A12

N.M.

A23

A22

A21

A20

D0 D1 D2 D3

D4 D5 D6 D7

RESET

TSTCLK

DEBUGn

VSS

VSSPLL

VDDPLL

VDD

IVREFp

IVREFn

ADXG

ADGA ADGA

ADVA

TEST033TEST1

5 5

RA18 33

RA17 33

A11

A10A6A8A4A7A5A3

234

126

125A9124A8123A7122A6121A5120A4118A0114A3117A2116A1115RD6WR5

A11

A10

4 4

RA19 33

234

IC5

SCE209L (1/2)

CLK269START67STRB057STRB158STRB259STRB360PCLK63PDAT62PLAT

R172 100

C281

15pF

C280

100pF

CISCLK

CNCIS-5

(4-3A)

(2-4D)

(4-3A)

(2-4A)

(2-4G)

(2-3A)

CAS-

RAS-

GACS-

FLCS-

WR-

ROMCS-

RD-

R121 33

DWR-

R120

R173

R126

N.M.

R118

R205

R128

R124 68

R119 33

<G>

ROMCS

<H>

175

CS3

RAS25CAS

DWR

FCS1

REGDMA/GPO18/CLKDIV0

FAX CONTROLLER

<¿T>

R117 270

SCANSYNC

PCLK

(4-3A)

R116 270

PDAT

(4-3A)

3 3

R170 270

¿T

CNCIS-4

10K

<I>

<J>

176

WRPROT

SYNC/GPO20

WAIT/GPO19/CLKDIV1

R115 270

C122

C121

C120

PLAT

(4-3A)

N.M.

<CS5>

CS5

<CS5n>

IRQ15n

BATRST

VBAT

PWRDWN

INTPWRDOWNE

XOUT

XIN

VREFp

VREFn/CLREF VIN THADI

ALTTONE (BZ)

SM0 SM1 SM2 SM3

OPI0 OPI1 OPI2 OPI3

LCDCS OPO0 OPO1 OPO2 OPO3 OPO4 OPO5 OPO6

(4-3A)

INT

C153

100pF

C125

1u/10V

39 40 49

149

171 172 173 174

19 20 21 22

23 12 13 14 15 16 17 18

10K

R132

R130

RA2

470

18 2 3 4

470

RA1

R127

R131

10M

7 6 5

+5V

IC13

2 2

UX-B20U/UX-B20C/B25C

C133 1u/10V

220K

32.768KHz 18pF

C126

22pF

C124

470 R122

470

R123

470

R125

CNPN-9

N.M.

R28

C53

ENABLE

(1-1D)

TC7SET08FU

<DG>

VBAT

N.M.

VBATn

C127

+3.3V

R133

C132

+3.3V

VIN

N.M. C316 C317 C318 C319

KEN1A

KEN2A

KEN4A

SEN0

SEN1

SEN2

SEN3

SEN4

SEN5

SEN6

100pFx8

C322

1 1

N.M.

(6-5D)

BZOUT1

(7-3E)

CNPN-4

CNPN-3

CNPN-2

CNPN-1

ENABLE

(1-2A)

CNPN-10

CNPN-11

CNPN-12

CNPN-13

CNPN-14

CNPN-15

CNPN-16

C329

C328

C327

C326

C325

C324

C323

6 – 1

Page 68

UX-B20U/UX-B20C/B25C

2. Memory Block (2/8)

2/8

D6D0D3D4D5

+3.3V

0.1uF

RA10 33

234

C119

RA9 33

234

DQ02DQ13DQ24DQ35DQ424DQ525DQ626DQ7

0.1uF

VCC

IC1

RAS

A7A9A8

A6A1A2

+3.3V

D2D6D7

R113

10K

R114

10K

RAS-

(1-3I)

C239

0.1uF

+3.3V

VDD

A010A111A212A313A416A517A618A719A820NC

D021D122D223D325D426D527D628D7

IC8

A020A119A218A317A416A515A614A713A83A92A1031A111A1212A134A145A1511A1610A176CE

CAS-

(1-3I)

GND

CAS

GND

DWR-

(1-3I)

GND

A18

A(A)[11:0]

DRAM

MSM51V4800E

N.M.

32WE7

(4-6B)

D(A)[15:0]

IC3

D(A)7

D(A)0

D(A)2

D(A)3

D(A)5

D(A)6

D(A)1

D(A)4

51876

234

RA11 100

234

D25D48D6

D02D1

D712D59D3

A021A122A223A324A427A528A629A730A831A932A1020A11

A(A)1

A(A)4

A(A)2

A(A)6

A(A)0

A(A)3

A(A)7

A(A)5

D(A)8

D(A)9

D(A)10

D(A)11

D(A)12

D(A)13

51876

RA6 100

RA7 100

234

D839D9

D1042D1143D1245D1346D14

A(A)9

A(A)8

A(A)10

A(A)11

D(A)14

234

+3.3VA

D(A)15

D15

RA12 100

VDD

VDDQ

CE18RAS17WE

CAS16LDQM

SDCE-

SDRAS-

SDCAS-

(4-4B)

GNDQ

C146

C147

GNDQ41GNDQ

0.1uF

C177

0.1uF

C110

0.1uF

C176

C178

VDDQ

0.1uF

GND26GND

DRAM

CLK

UDQM36CKE

NC1

SDWE-

(4-4B)

+3.3VA

NC2

M12L16161A-7TG

C10

N.M.

SDCLK

(4-4B)

R155

10K

+3.3V

D1D1D7

D4D5D3

D021D122D223D325D426D527D628D7

A13

A11

A12

A10A5A14

C238

VDD

A17

A18

A16

A15

+3.3V

R159

N.M.

FLCS-

(1-3I)

0.1uF

32WE7

GND

IC7

A020A119A218A317A416A515A614A713A83A92A1031A111A1212A134A145A1511A1610A176CE

D[7:0]

A[18:0]

(1-6I)

(1-5I)

(4-4A)

Memory Block

6 6

(4-3A)

5 5

A5A3A9

A11

A8 A9

A10

A18

A17

A12

A15

A14

A18

A13

A16

+3.3V

10K

R158

4 4

Pm39LV040

ROMCS-

(1-3I)

FLASH

+3.3V

R199

10K

WR-

(1-3I)

(4-3A)

RD-

(1-3I)

(4-3A)

3 3

2 2

1 1

6 – 2

Page 69

3. FAX Modem Block (3/8)

3/8

(7-6B)

ICLK

FSYNC

102

SA1CLK

N.M.

R185

IA1CLK

ICLK (IIA)

FSYNC (IIA)

IACLK

UX-B20U/UX-B20C/B25C

(7-4D)

SIGTX

ADG

N.M.

ADG

3.3k

R231

N.M.

(7-6B)

MCLK

CTRLSIN

N.M.

R206

R174

101

100

SR1IO

SR4OUT

MCLK (IIA)

CTRLI (IIA)

(7-5A)

CDCRST

N.M.

R188

C197

SR3IN

SIN (IIA)

IARESET

POR (IIA)

SOUT (IIA)

1000pF

(7-6B)

DATAI

N.M.

R166

ADG

157

GPO30/SR3OUT

(7-6B)

DATAO

N.C.

GPIO11/SERIN/SR4IN

MCDE0

TESTC

ADG

(7-2E)

R242

SIGRX

110k

R224

VREF

C196

0.1uK

MIC_INP (IIA)

114

C288 100p

R229 110k

N.M.

R223

R225 10k

ADG

0.1uK

C345

ADG

R186

R187

2.2K

MIC_INM (IIA)

MIC_BIAS (IIA)

SPKR_OUTP (IIA)

ADG

C286

1u/50V 0

R227 10k

0.1uK

C346

SPKR_OUTM (IIA)

(7-1A)

MICIN

LINE_INP (IIA)

+24V

(7-2E)

SPOUT

LINE_OUTP (IIA)

IC12A

LM2902NSR

+3.3V

L104

C242

10u/10

(2012)

C243

0.1uF

AVDD (IIA)

R108

R240

C52

ADG

C285

10u/10V

(2012)

C284

0.1uF

C241

0.1uF

VREF (IIA)

AVSS2 (IIA)78AVSS1 (IIA)

AGND (IIA)

R149

R22

R103

C347

+3.3V

C283

(2012)

10u/10V

C31

0.1uF

DVSS(IIA)

DVDD (IIA)

FAX Modem Block

IC5

SCE209L (2/2)

MODEM BLOCK

GPIO36

168

R167 33

GPO1

LEDON

(6-1A)

GPIO35

164

163

R161 270

R160 270

ORGSNS-

FRSNS-

CNPN-8

GPO0

167

+3.3V

W-TONE

(7-3E)

C321

C320

CNPN-7

3 3

DSS_PARK

SASRXD2

SASTXD2

GPIO26

GPIO27

GPO26

GPIO9

151

(6-3F)

(4-4H)

C189

Q103

N.M.

R215

BKL1

-2

CNBKL

GPIO8

153

112

113

N.M.

R184

R183

R129

VOLC

VOLA

VOLB

(7-3I)

N.M.

R216

SASTXD

SASRXD

GPIO3

RDY

109

N.M.

C155

R169

WAIT

(4-3A)

1000pF

DGDG

1000pF

ASICRES

(4-4A)

111

R203 100

FLTXD

CNPRG-1

GPIO4

106

103

104

150

110

R204 100

N.M.

C331

C330

FLRXD

CNPRG-3

2 2

GPIO5

GPIO17

GPIO16

105

R168 270

R171 270

R222 270

CI-

HS-

RHS-

IU-11

CNLIU-5

CNL

CNLIU-14

6 6

162

N.M.

82 C2

C156

C154

SIGMUTE

SPMUTE

(7-3I)

5 5

GPO2568GPIO34

SIGMUTE

(7-3A)

154

DTMFMUTE

GPO27

DTMFMUTE

(7-2E)

GPIO31

159

RCVOL

(7-2E)

GPIO28

152

155

R165 470

R164 270

TELMUTE

CML

CNLIU-7

GPO28

CNLIU-10

GPIO32

GPO29

160

156

N.M.

R162

R163

C193

1000pF

C195

1000pF

CML

(7-3D)

DPON

CNLIU-15

N.M.

C191

DG DG

C190

DPMUTE

CNLIU-16

4 4

169

Q104

GPO2

GPIO29

GPO3

158

170

270

R182

C350

MICMUTE

CNLIU-12

N.M.

R217

R218

BKL2

CNBKL-3

1 1

N.M.

6 – 3

Page 70

UX-B20U/UX-B20C/B25C

4. ASIC Block (4/8)

4/8

(PHD1)

(LCN)

CNHEAD2-9

234

111

(PLOAD)

(PENABLE)

CNHEAD2-3

5187

114

113

LCN

PLOAD

(PHD0)

CNHEAD2-2

120

PENABLE

CNHEAD2-4

CNHEAD2-5

234

119

118

PDATA1

PDATA0

(PHD3)

(PHD2)

CNHEAD2-6

CNHEAD2-7

5187

117

PDATA2

RA14

PDATA3

470pF 470pF 470pF

470pF 470pF 470pF 470pF

470pF 470pF 470pF

470pF

470pF 470pF 470pF 470pF

C182 C183 C181

C228 C225 C226 C227

C235 C236 C234 C233

C229 C230 C231 C232

<DEBUG>

TEST

DEBUG

DMYOUT

TM051TM152TM2

(6-3F)

+3.3VA

121

108

VDD86VDD79VDD80VDD98VDD

VDD

C47

C46

0.1uF

C179

0.1uF C148

0.1uF C149

0.1uF C111

0.1uF C114

0.1uF C117

0.1uF C116

0.1uF C150

0.1uF C151

0.1uF C185

0.1uF C186

0.1uF C184

C180

0.1uF

134

VDD

GND11GND20GND21GND23GND24GND37GND38GND48GND49GND58GND62GND63GND

GND45GND46GND

GND71GND81GND77GND72GND78GND96GND84GND85GND

GND

116

115

105

109

110

123

132

143

131

122

144

GND

C112

100pF

PIN_N

VDD1VDD10VDD25VDD57VDD73VDD36VDD56VDD

(AGATE)

5.1k

R156

47k

(POS)

(OK2PRT)

(PHID1)

CNHEAD2-11

CNHEAD1-10

CNHEAD1-9

RA13

R245 33

R247 33

R246 33

124

126

125

POS

PHID

OK2PRT

(SPRES-)

CNHEAD2-10

127

SFRES_N

(ACLK)

CNHEAD1-2

234

130

ACLK

CNHEAD1-3

129

(PCLK)

CNHEAD1-7

5187

128

AGATE

RA15

PLCLK

(LHCS)

CNHEAD2-8

112

LHCS

+3.3VA

R157

R197 33

141

(5-5B)

nCS

SCK

R198 33

142

SCS_N

R196 33

SCLK

140

(5-5B)

SDI

SDAT

(5-6B)

TBRES-

C224

133

SRST_N

R181

N.M.

1000pF

IC4

ASIC

µPD65945

RB40RA431RA530RA629RA7

RA10

RA4

100

RA3

234

A(A)10

A(A)11

A(A)0

A(A)[11:0]

D(A)[15:0]

A(A)[11:0]

D(A)[15:0]

(2-3I)

ASIC Block

6 6

RA332RA233RA134RA0

100

234

100

RA8

234

A(A)3

A(A)5

A(A)2

A(A)7

A(A)8

A(A)1

A(A)4

A(A)6

RD09RD18RD27RD36RD54RD45RD63RD72RD819RD918RD1017RD1116RD1215RD1314RD1512RD1413RCS_N

RA926RA8

A(A)9

D(A)7

5 5

D(A)8

D(A)9

D(A)11

D(A)12

D(A)14

D(A)13

D(A)0

D(A)1

D(A)2

D(A)3

D(A)6

D(A)4D1D(A)10

D(A)5

100

RA5

D(A)15

SDWE-

(2-2G)

RRAS_N42RCAS_N43RWE_N

RCLK

N.M.

C11

234

100

SDCE-

SDCLK

SDCAS-

SDRAS-

(2-2G)

(2-1G)

(3-3B)

ASICRES

C115

ASICRES

1000pF

4 4

104A2102A4100

103

A[5:0]

(1-5I)

(2-6A)

101

D0A2D3

D[7:0]

(1-6I)

(2-5A)

D095D194D491D392D6

93A599

D2A3D7

D788D590D2

INT_N

R109 33

INT

GACS-

(1-2I)

(1-3I)

3 3

PDAT65PLAT66PCLK

RDY

107

106

R248

R134

RD-

WR-

PCLK

PDAT

WAIT

PLAT

(1-3I)

(3-3C)

(1-3A)

2 2

SCANSYNC

(1-3A)

SYSCLK

XIN

XOUT

SMC

SCK

SIN

AMC

N.M.

C12

N.M.

200

C113

CLOCK

(1-5A)

SOT

135

136

137

138

139

C118

10pF

120

R112

R110

1 1

DGDG DG

150

R111

32.256MHz

22pF

C152

WR_N

RD_N

CS_N

6 – 4

Page 71

5. Thunderbolt Block (5/8)

UX-B20U/UX-B20C/B25C

5/8

Thunderbolt Block

+VM

VBULK

VBULK15VBULK

IC10

PLCC44

THUNDERBOLT

nRESET

N.M.

C213

R195

RESTB(4-6G)

6 6

C25

47uF/50V

VCP

VBULK

VBULK30VBULK31VBULK

nCS43SCK42SDI41Motor1_PWM22Motor1_Mode

R178

+3.3VS

C211

100p

C50

100p

C212

100p

SDI

nCS

SCK

(4-6G)

CNFDMT-4

CNFDMT-2

CNFDMT-3

CNFDMT-1

FMA-

FMB+

FMB-

C265

2200p

C267

2200p

C266

2200p

C268

2200p

SS14

Motor1_A-

Motor1_A+

Motor2_PWM24Motor2_Mode

+3.3VS FMA+

5 5

N.M.

C216

C217

C262

C261

R10 0.91 (1W)

R8 0.91 (1W)

Motor1_B-

Motor1_B+

Motor1_A_R20Motor1_B_R

VCC_Src

VCC5VCC_FB8VPH_Src36VPH_FB

+3.3VS

680uH

C169

1u/10V

+11.82V

CNCRMT-1

CMA+

R234

7.87K_F

C298

CNCRMT-3

CNCRMT-2

CMA-

CMB+

Motor2_A-

Motor2_A+

Motor2_B+

SS16

R212

2700pF

C299

ZD1

CNCRMT-4

CMB-

Motor2_B-

2.00K_F

0.1u/50V

N.M.

4 4

C303

2200p

C264

2200p

.91 (1W)

R7 0.91 (1W)

R17 0

Motor2_A_R13Motor2_B_R

GND39GND

N.M.

VR1

C37

220uF/25V

C305

2200p

C304

2200p

N.M.

C173

C174

C257

C260

This mark indicates a safety-critical part(s).

NOTE:

+30VHD

R235

47K

MGMG

+VM

R236 0

R213 0

R214 0

AGND

GND

CP22CP1

C26

0.01uF

R211

100_F

CNHEAD1-5

CNHEAD1-6

CNHEAD1-8

+30VHD

+11.82V

3 3

+VM

C215

0.1u/50V

C256

0.1u/50V

C172

0.1u/50V

C171

0.1u/50V

C258

0.1u/50V

C259

0.1u/50V

N.M.

C170

0.1u/50V

CNHEAD1-1

C270

CNHEAD1-11

1000pF

CNHEAD1-12

CNHEAD2-1

2 2

CNHEAD2-12

+VM

CNHEAD1-4

C311

0.1u/50V

C310

R243

+3.3VS

+30V

R176 0

C38

100uF/50V

D10

1SR154-400TE25

C24

47uF/50V

FU101

KAB3202 202

C23

100uF/50V

R177 0

R105 0

R104 0

1 1

FG3

6 – 5

Page 72

UX-B20U/UX-B20C/B25C

6. Video/Sensor/Power Supply Block (6/8)

6/8

Video/Sensor/Power Supply Block

CNPN-6

+3.3V

<+3.3V>

+3.3V

L102

Vout

REG2

D103

1SS355

S-815A33AMC

Vin

+5V

<+5V>

+5V

CNPW-8

CNPW-7

<VBT>

<VBT1>

+3.3VA

R106

6 6

CNPN-5

CNPRG-2

DGMGDG

<DG>

C29

47uF/25V

C166

D101

0.1u/50V

C165

1000p/50V

C15

22uF/50V

C167

0.1u/50V

N.M.

C141

C16

(1608)

1000pF

<MG>

+30V

CNPW-1

CISVDD

N.M.

CNPW-2

CNPW-3

VIN (1-1F)

<VIN>

C240

1000pF

Q105

5.1K

R220

<VO>

NCIS-1 C

C188

1u/10V

C17

N.M.

VSS

ON/OFF

C187

0.1uF <DG>

C28

47uF/25V

C18

1000pF

(1608)

0.1uF

47uF/25V

C237

0.1uF

+5V

CNLIU-3

CNLIU-2

CNLIU-4

CNPW-5

VBAT

+3.3VA

D102

RB715F

A2 K

5.6K

BAT1

CR2032

+30V

N.M.

R151

<+30V>

CNPW-6

5 5

+3.3VA

D104

1SS355

+5V

CNPW-4

2SA1530AS

51k

R221

4 4

<+3.3VA>

L103

Vout

REG3

S-815A33AMC

Vin

+3.3VA

+5V

ON/OFF

C27

47uF/25V

C222

1u/10V

N.M.

C221

VSS

D100

C220

1u/10V

(3-2C)

(4-5G)

C144

1000pF

CNCIS-3

CISVDD

R219

+3.3V

3 3

PH1

GP1S094HCZ

FRSNS

0.1uF

C279

C33

47uF/25V

CNCIS-2

<VG>

L106

<PIN>

R152

N.M.

R107

390

R153

390

R154

CISVDD

1SS355

CNCIS-7

+24V

<+24V>

+24V

L100

Vout

REG1

BA178M24FP-E2

Vin

11 (2W)

FU100

+30V

CNLIU-1

+24V

22uF/50V

C104

0.1u/50V

VSS

C103

R102

KAB5002 201

0.1u/50V

R18

N.M.

CNCIS-6

220 (2W)

C332

0.1u/50V

N.M.

R237

Q108

2SC2411KR

R193 0

R101 0

<+3.3VS>

+3.3VA + 3.3VS

L105

R150 1000p

C348

R180

R100 0

R23

C271

R25

C48

N.M.

R179

FG1 FG2

FG3nFG3

N.M.

R24

N.M.

C269

DG DG

N.M.

DG MG

This mark indicates a safety-critical part(s).

(3-3C)

2 2

LEDON

NOTE:

1 1

6 – 6

Page 73

7. Analog Signal Block (7/8)

7/8

(8-2D)

IC-1

CNM

CNMIC-2

MIC+

MIC-

Analog Signal Block

C334

R238

R239

N.M.

R189

C199

MICINP

MICBIAS

IC11

FSYNC6ICLK26MCLK31CTRLSOUT

N.M.

ICLK

MCLK

FSYNC

(3-6H)

(3-5H)

(3-6H)

6 6

C335

ADG ADG

C333

N.M.

ADG

R190

C203

C200

TP203

LINEIN

MICINN

SPKRON

SOUT4SIN

CTRLSIN1POR

N.M.

DATAI

DATAO

CTRLSIN

(3-4H)

(3-5H)

+3.3V

VREF

+5V

N.M.

TP204

C(3-5H) DCRST

R241

SPKROP

VREF

N.M.

C198

C287 220pF

10k

TP205

C159

C20

ADG

R228 220k

C39

LINEO

IC12B

LM2902NSR

411

+24V

ADG

C40

N.M.

VREF

C336

0.1uF

22uF/50V

R207

MODE123MODE0

AGND

ADG

C158

C19

ADG

N.M.

L101

+3.3V

5 5

R11

ADG

AVDD

TELIN

C289 0

TEST

C21

C201

C162

N.M.

CNLIU-6

N.M.

C337

2200pF

R226

13k

R230

ADG

NC125NC227NC328NC429NC5

XCLOKO

AVSS_TX

AVSS_RX

3.3k

+3.3V

DVDD

ADG

UX-B20U/UX-B20C/B25C

C32

47uF/25V

+5V

ADG

NC6

DVSS

C22

10uF

C49

0.1uF

+5V

C161 220pF

(3-3H)

SIGTX

N.M.

C291

ADG

C290

TXOUT

LIU-9

4 4

C344

C292

1u/10V

C339

10u/10

220p

(2012)

R175 220K

R192

C208

ADG

Q106

ADG

432

IC6

NJM2113

R136

100K

R137

IC9

R191

C249

C248

(3-5B)

SIGMUTE

(8-2D)

CNSP-1

SP+

C45

W-TONE

(3-3C)

ADG

N.M.

(3-4B)

CML

Q107

N.M.

ADG

(8-2D)

CNSP-2

(3-5B)

SPMUTE

C160

C135

ADG

N.M.

C207

0.1uF

R12 39k

C36

C342

C343

0.1uF

1u/10V

ADG

D106

1SS355

N.M.

ADG

R233

C294

C349

+24V

ADG

R14

VREF

N.M.

ADG ADG

(3-3H)

SIGRX

C252

1u/10V

R13

C35

L107

RXIN

CNLIU-8

0.1uK

C250

Q101

RT1N141C

R209

C253

0.1uK

39K

R232

3.3k

R16

39k

IC12C

0.1uK

LM2902NSR

C338

2200pF

+3.3V

C139

0.1uF

313

VEE

VDD

GND

IC2

X0X1X2X3X4X5X6

141512

R148

R144

R146

R142

18K

R139

R140

C138

C137

0.1uF

(3-5B)

DTMFMUTE

RCVOL

Q102

RT1N141C

N.M.N.M.

C205

ADG

C247

3.9K

7.5K R194

R210

ADG

C42

R19

N.M.

C43

+24V

D105

+3.3V

2 2

SPOUT

(3-2H)

N.M.

C209

C251

N.M.

ADG

VREF

N.M.

ADG

R20

R15

C41

411

C44

N.M.

(3-2H)

MICIN

R135

BZOUT1

(1-1F)

ADG

C245

IC12D

R21

N.M.

SP-

+3.3V

C293

C295

C34 220pF

N.M.

3 3

(3-1C)

(3-2C)

VOLC

VOLA

VOLB

ADG

11109

E-

152

R145

R141

R147

R143

82K

0.01uF

R138

ADG ADG

C136

20K

4700pF

C202

Q100

C244

R208

C246

LM2902NSR

N.M.

ADG

C340

ADG

TELOUT

CNLIU-13

1 1

N.M.

ADG

6 – 7

Page 74

UX-B20U/UX-B20C/B25C

8. Connector Block (8/8)

C302

C263

C168

C218

C142

C51

C102

C101

C100

0.1u/50V

0.1uF

C301

C300

C297

C255

C254

C296

0.1u/50V0.1u/50V 0.1u/50V 0.1u/50V 0.1u/50V 0.1u/50V

C210

0.1u/50V

0.1uF

C175

0.1uF

C223

0.1uF

C219

0.1uF

C109

0.1uF

C145

0.1uF

C143

0.1uF

C108

0.1uF

C107

0.1uF

C105

0.1uF

+5V

C140

0.1uF

C157

0.1uF

C164

0.1uF

C163

0.1uF

C206

0.1uF

+3.3V

C134

0.1uF

+3.3V

DG ADG

8/8

CNHEAD2-7

CNHEAD2-2

CNHEAD2-3

CNHEAD2-4

CNHEAD2-5

CNHEAD2-6

CNHEAD2-1

CNHEAD2-8

CNHEAD2-9

CNHEAD2-10

CNHEAD2-11

101112

CNHEAD2-12

HLW12S-2C7

C309

C314

N.M.

C312

C313 C308

C277

C278

C307

C306

C315

+24V

+11.82V

+VM

+3.3VS

CNHEAD1-5

CNHEAD1-8

CNHEAD1-2

CNHEAD1-1

123456789

CNHEAD1

CNHEAD1-10

CNHEAD1-11

CNHEAD1-9

CNHEAD1-4

CNHEAD1-6

CNHEAD1-7

CNHEAD1-3

CNHEAD1-12

101112

HLW12S-2C7

+3.3V

N.M.

R26

+5V

N.M.

C272

C273

C274

C275

C276

123456789

CNHEAD2

R27

Connector Block

R244

FRSNS-

SEN0

KEN1A

KEN3A

ORGSNS-

KEN2A

KEN4A

123456789

CNPN

ADG

+24V

123456789

CNLIU

6 6

SEN1

10111213141516

ADG

TELIN

RXIN

CML

+5V

TELMUTE

CI-

RHS-

TXOUT

10111213141516

5 5

SEN2

MICMUTE

C341

SEN4

SEN3

HS-

TELOUT

1000pF

SEN6

SEN5

DPMUTE

DPON

+5V

CNBKL

A2001WV2-16PE

A2001WV2-12PE

+5V

BKL1

123

BKL2

A2001WV2-3PA

1234567

CNCIS

4 4

CISVDD

GLED

CISCLK

+24V

A2001WV2-7PE

CNCRMT

+5V +30V

CNPW

CMA+

CMB-

CMA-

CMB+

123

A2001WV2-4PA

+30V

1234567

3 3

ADG

A2001WV2-3PM

FMA+

FMA-

FMB-

FMB+

FLTXD

FLRXD

123

CNFDMT

A2001WV2-4PE

+5V

A2001WV2-8PE

123

CNPRG

A2001WR2-3PE

SP+

SP-

DG MG

CNSP

A2001WV2-2PE

2 2

CNMIC

MIC-

MIC+

123

1 1

6 – 8

Page 75

9. Control PWB parts layout (Top side)

UX-B20U/UX-B20C/B25C

The CONTROL PWB of the model employs lead-free solder.

6 – 9

Page 76

UX-B20U/UX-B20C/B25C

10. Control PWB parts layout (Bottom side)

6 – 10

The CONTROL PWB of the model employs lead-free solder.

Page 77

[2] LIU PWB circuit

1. LIU PWB Circuit (1/3)

1/3

UX-B20U/UX-B20C/B25C

PC1A

N.M.

R13

JP(12.5mm)

IN/OUT

HZ2C1

ZD2

I2164

N.M.

C13

R135

Vref A

100

R120

22u/50V

HZ2C1

ZD3

1000p

C103

C119

0.01u

PC2B

VA1

ZD1

ZD5

JP1

R103

R102

R101

JP5

EX-T1

CNTLJ-3

LIU PWB Circuit

PC3A

PS2501A-1

N.M.

ZD9

PC4A

R15

ZD10

JP(1/4W)

C118

JP6

N.M.

CNLNJ-5

D D

N.M.

51(1W)

N.M.

JP8

CNLNJ-3

JP7

RA-391P-V6-2

AR1

N.M.

C14

22k(1/4W)

0.82u/250V

CML1A

A5X-G-24E-908

N.M.

JP(12.5mm)

RA501P-C6

AR3

N.M.

AR2

CNLNJ-4

C C

1N4148

ZD7

22k(1/2W)

R14

ZD8

ARG

CNLNJ-2

HZ27-1

N.M.

JP4

EX-T2

CNTLJ-4

B B

A A

This mark indicates a safety-critical part(s).

NOTE:

6 – 11

Page 78

UX-B20U/UX-B20C/B25C

2. LIU PWB Circuit (2/3)

2/3

CNLIU-6

2200p

TELIN

13k

220p

R131

R11

100(1/4W)

R19

N.M.

C131

Q105

RT1N436C

MICMUTE

C126

13k

R129

R130

KTC3198GR-AT

0.1u/16V(k)

N.M.

Vref B

R128

3.3k

C139

JP2

N.M.

C130

C135

10k

R127

N.M.

LM2902

IC101D

C138

C17

4.7u/25V

RX+

11k

R117

N.M.

IC101C

16k

R118

C116

CNLIU-13

TELOUT

R115

LM2902

Ð9+

220p

C114

N.M.

TX+

Vref B

C132

2200p

C141

N.M.

3.3k

R116

N.M.

C140

C125

C112

1000p

C124

C12

1000p

C115

24VA

Vref A

N.M.

TX-

CNLIU-9

TELOUT

C122

C106

0.1u/16V(k)

8.2k

R119

33p

82k

C123

R125

N.M.

TXOUT

C137

ZD6

33p

15k

R113

C110

Vref A

R121

N.M.

C10

82k

R122

LM2902

IC101A

(1608&2125)

3.3k

R126

620

R108

N.M.

R106

N.M.

C108

R109

CNLIU-8

2200p C136

RXIN

6+5

39k

R111

R110

Vref A

C102

R105

C104

R107

C105

C107

HZ9C3

ZD4

3.3k

R114

IC101B

24k

R112

Vref A

(1608&2125)

LM2902

22k

C109

N.M.

Q103

R133

Vref A

820p

RT1P141C

TELOUT

C113

2200p

22u/16V

C16

C129

R134

620

JP3

CNLIU-7

TELMUTE

C11

Q104

RT1N436C

N.M.

R132

2200p

C127

N.M.

150(1/4W)

R12

N.M.

C128

1N4148

N.M.

JP9

N.M.

C142

N.M.

RX-

HSDG

LIU PWB Circuit

( 1-1D)

IN/OUT

D D

C C

CNHJ-1

CNHJ-4

B B

CNLIU-12

CNHJ-2

CNHJ-3

A A

6 – 12

Page 79

3. LIU PWB Circuit (3/3)

3/3

UX-B20U/UX-B20C/B25C

+24VA

CNLIU-5

RHS-

0.1u C111

LM2902

IC101E

N.M.

Vin

REG1

C120

C15

CNLIU-4

+5V

R18

JP(1/4W)

N.M

GND

Vout

100u/50V

CNLIU-1

+24VHS-

C133

R17

+24V

0.1u/16V(k)

C143

R16

+24VA

D101

100(1/2W)

ZD11

CNLIU-3

CNLIU-2

N.M.

C134

Vref A

N.M.

Vref B

47u/16V

+C9

N.M.

R124

R123

PH1

SG206

220(1/4W)

+5V

22u/50V

411

LIU PWB Circuit

N.M.

R10

1k(1/4W)

C121

100u/25V

CNLIU-10

CNLIU-15

N.M.

DPON

Q101

PC2A

R104

+5V

+24V

1N4148

Q102

RT1N436C

CML

CML1B

A5X-G-24E-908

This mark indicates a safety-critical part(s).

CNLIU-11

PS2501A-1

PC3B

1000p

C101

Vref A

CNLIU-14

N.M.

PC4B

PC1B

C117

NOTE:

D D

C C

B B

A A

6 – 13

Page 80

UX-B20U/UX-B20C/B25C

4. LIU PWB parts layout (Top side)

6 – 14

The TEL/LIU PWB of the model employs lead-free solder.

Page 81

5. LIU PWB parts layout (Bottom side)

UX-B20U/UX-B20C/B25C

The TEL/LIU PWB of the model employs lead-free solder.

6 – 15

Page 82

UX-B20U/UX-B20C/B25C

[3] Power Supply PWB circuit

1. Power Supply PWB circuit

+30V

P101

JUMPER

+30V

CNPW

5.6K

HZ-36P

D104

R103

R104

+5V

7.5K

120/16

C104

R109

100

R110

2.7K R111

PC123

PC1

0.1

C110

820

R112

5.6K

R115

VR101

470/16

C102

D106

N.M.

C10

0.033

820

1SS133

TA76431AS

IC101

1SS133

100

10K R11

HZS9

6.2K R113

R10

100P

C11

6.8K

1SS133

33K

4700P

680 R17

PC123

PC1

820 R13

22K

R12

7.5K R108

7.5K R105

7.5K

D101

ERC91-02

D10

R102

7.5K R101

5.6K R107

C103

C101

180KR3180K

D11

D13

2.2M

7.5K R106

100/50

120/200

2.2M

R41

N.M.

C111

D10 - D13

NTC1

07D1

ERA15-06 x 4

JUMPER

N.M.

D102

BEA101

EC31QS03L

D12

BL02RN1

HZS30

Power Supply PWB Circuit

BL02RN1

BEA1

4700P

2 2

1 1

0.1 C1

ENC241

250V/2.5A

CNAC

6 6

5 5

4 4

R19

2SK3563

220P

15K

3 3

6 – 16

Page 83

2. Power Supply PWB parts layout (Top side)

UX-B20U/UX-B20C/B25C

D104

C101

C103

D101

C102

P101

R104

VR101

R107 C111

D106

The POWER PWB of the model employs lead-free solder.

R103

BEA101

IC101

C104

CNPW

PC1

BEA1

R19

D12

D11

AC250V

2.5A

NTC1

D13

D10

CNAC

3. Power Supply PWB parts layout (Bottom side)

The POWER PWB of the model employs lead-free solder.

R106

R105

R102

D102

R108

R101

R113

R115

R112

C110

R110

R111

R13

R11

C10

R17

R12

C11

R10

R41

R109

6 – 17

Page 84

UX-B20U/UX-B20C/B25C

[4] Operation Panel PWB circuit

1. Operation Panel PWB circuit

KEN3A

KEN2A

KEN1A

FRSNS-

+3.3V

ORGSNS-

SEN3

SEN5

SEN211SEN4

14613

SEN6

CNLCD

+3.3V

4DG6

E9R/W

N.C

LD1

LD0

111012VO14

CNLCD-11

CNLCD-12

LD0

LD1

LD2

LD3

CNLCD-13

CNLCD-14

LD2

CNLCD-4

LD3RSR/W

CNLCD-5

CNLCD-6

CNLCD-3

220p

CNLCD-2

+3.3V

CNLCD-1

SEN1

SEN0

(JWT)

KEN4A

A2001WR2-16PE

CNPN

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

HOLD

RESOLUTION

3 FUNCTION

SPEED/DIAL

SPEAKER

COPY/HELP

START

INKRESET

FLASH/

INTERCOM

200

6.2k

SEN0

CNPN-10

Operation Panel PWB Circuit

1N4148

CNPN-12

SEN3

1N4148

CNPN-13

SEN4

STOP

1N4148

CNPN-14

SEN5

DOWN

1N4148

CNPN-15

SEN6

C C

REC/MEMO

PLAY

1N4148

CNPN-16

+3.3V

N.M.

SW2

22u/50V

KEN1A

KEN2A

KEN3A

CNPN-4

CNPN-3

KEN4A

CNPN-2

CNPN-1

B B

CNPN-9

+3.3V

CNPN-6

A A

CNPN-5

SW1

ORGSNS-

CNPN-7

FRSNS-

CNPN-8

1N4148

SEN1

SEN2

CNPN-11

D D

6 – 18

Page 85

2. Operation Panel PWB parts layout (Top side)

UX-B20U/UX-B20C/B25C

The OPERATION PANEL PWB of the model employs lead-free solder.

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

6 – 19

Page 86

UX-B20U/UX-B20C/B25C

3. Operation Panel PWB parts layout (Bottom side)

The OPERATION PANEL PWB of the model employs lead-free solder.

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

6 – 20

Page 87

[5] Ink PWB circuit

1. Ink PWB Circuit

UX-B20U/UX-B20C/B25C

CNFPC

1234567891011121314151617181920212223242526272829303132333435363738394041

BCA8

BCP5

BCP3

BCA9

BCA6

BCA5

+11.82V

BCA10

BCA7

PCLK

BCA8

+30V

BCA11

BCA9

PD3

BCP7

BCA10

18A919

PD2

BCA7

BCP9

BCA12

BCA11

BCA13

A1117A1228A10

A13

PD1

PD0

R105

R102

N.M.

3.9K

1000u/25V

BCP1

BCA[13:1 ],BCP[16:1 ],BH12,BSEL,BS1

BCA3

BCA4

BCA1

BCA2

3.9K

R104

A126A225A423A324A727A820A621A5

VCC3

VCC2

GND

AGATE60ACLK61VCC155PCLK57PD354PD253PD152PD051PLOAD50PENABLE49LOAD_HTR_CS

GND GND

GND

+3.3V

GND

ACLK

AGATE

+3.3V

+11.82V

C102

0.047u/50V

C109

C110

C111

N.M.

0.1u/50V

+11.82V

C106

C107

GND

0.1u/50V

C105

GND

+30V

+11.82V

BCP11

BCA12

BCP15

BCP13

BCA13

BCP3

BCP1

BCP2

BCP4

P345P93P837P6

P242P1

IC100

SPITFIRE

R100 39

GND

LHCS

PENABLE

PLOAD

nHOME

BCA6

BCP14

BCP12

BCP16

BCP5

BCP7

BCP8

BCP9

BCP6

P543P4

LATCH_CTRL59OK2PRT35RESET62PH_ID130PH_ID2

R101 39

R103 0

ID1

LCN

OK2PRT

NHDRESET

BH12

BCA5

BCP8

BCA4

BCA3

BCP10

BS1

BCP16

BCP13

BCP12

BCP14

BCP10

BCP15

BCP11

P13

P11

P10

P12

P1548P1610P14

GND

0.1

C104

+3.3V

GND

N.M.

C103

180P/50V

GND

C100

180P/50V

C101

BCP6

BH12

BCP4

GND

BCA2

BCP2

BCA1

BSEL

BS1

BSEL

63BH13

ID1

ID2

HSCD

HSMD

GND

VREF

N.M.

GNDGND

C112

R108

5.1K

R107

5.1K

R109

120

+3.3V

120

R106

PI1

GP1S094HCZ

GND GNDGND

C108

N.M.

Ink PWB Circuit

LCN

GND

CNHEAD1

6 6

5 5

ID1

ACLK

PCLK

AGATE

+3.3V

+11.82V

OK2PRT

+30V

1234567891011

GND

PENABLE

1234567891011

CNHEAD2

PD0

PLOAD

4 4

GND

LHCS

PD1

PD2

PD3

NHDRESET

nHOME

3 3

2 2

1 1

6 – 21

Page 88

UX-B20U/UX-B20C/B25C

2. Ink PWB parts layout (Top side)

FPC

3. Ink PWB parts layout (Bottom side)

FPC

6 – 22

Page 89

FAXUX-B20U/UX-B20C/B25CService ManualService ManualMarketE

CHAPTER 7. OPERATION FLOWCHART

[1] Protocol

UX-B20U/UX-B20C/B25C

To recording position

Receive side G3 communication

CED

NSF

CSI

DIS

(DCS)

CFR

TSI

NSS

TCF

Transmitter side (Document inserted into

document sensor during standby)

TSI

NSS

TCF

CED

NSF

CSI

DIS

Document inserted to the reading position

(DCS)

CFR

Cut line printed

MCF

IMAGE

RTC

MPS

IMAGE

RTC

EOP

SIGNAL

IMAGE

RTC

MPS

IMAGE

RTC

EOP

1st page

SIGNAL

Next page insert command

MCF

SIGNAL

MCF

DCN

MCF

DCN

Document ejectedRecording paper ejected

7 – 1

Page 90

UX-B20U/UX-B20C/B25C

[2] Power on sequence

"MEMORY CLEAR ?" display

YES

START key ?

COPY key ?

STOP key ?

3sec?

YES

STAND-BY

START

CPU initialized

MODEM initialized

"WAIT A MOMENT" display

STOP key ?

3 sec ?

YES

STAND-BY

"MEMORY CLEARED" display

Memory clear

STAND-BY

"MEMORY CLEARED" display

Memory clear

PROCESS CHECK MODE

7 – 2

Page 91

FAXUX-B20U/UX-B20C/B25CService ManualService ManualMarketE

CHAPTER 8. OTHER

[1] Service tools

1. List

UX-B20U/UX-B20C/B25C

NO. PARTS CODE DESCRIPTION QTY

PRICE

RANK

1 CPWBX3439SC01 Extension board unit 1CE 2 PSHEZ3579SCZZ Shading wave memory standard paper 1 AD 3 LBNDJ2006XHZZ Band(100mm) 3AA 4 QCNWG223CSCZZ CIS EXTENSION CABLE (7PIN) [CNCIS/CNCIS-2] 1 AY 5 QCNWG224CSCZZ PANEL EXTENSION CABLE (16PIN) [CNPN/CNPN-2] 1 BB 6 QCNWG225CSCZZ SPEAKER EXTENSION CABLE (2PIN) [CNSP/CNSP-2] 1 AR 7 QCNWG232CSCZZ BLK EXTENSION CABLE (3PIN) [CNBLK/CNBLK-2] 1 AS 8 QCNWG233CSCZZ MIC EXTENSION CABLE (3PIN) [CNMIC/CNMIC-2] (NOT USED) 1 AQ

9 QCNWG226CSCZZ POWER SUPPLY EXTENSION CABLE (8PIN) [CNPW/CNPW-2] 1 AY 10 QCNWG227CSCZZ FEED MOTOR EXTENSION CABLE (4PIN) [CNFDMT/CNFDMT-2] 1 AU 11 QCNWG228CSCZZ CARRIER MOTOR EXTENSION CABLE (4PIN) [CNCRMT/CNCRMT-2] 1 AU 12 QCNWG229CSCZZ INK 1 EXTENSION CABLE (12PIN) [CNHEAD1/CNHEAD1-2] 1 AY 13 QCNWG230CSCZZ INK 2 EXTENSION CABLE (12PIN) [CNHEAD2/CNHEAD2-2] 1 AY 14 QCNWG231CSCZZ PIN EXTENSION CABLE (2PIN) [CNPIN] 1 AX

1.1. Extension board unit

CNCRMT

CNFDMT

PI1

CNHEAD2

CNHEAD1

CNFDMT-2

CNCRMT-2

CNPW2

CNBLK

CNPN

CNSP

CNBLK-2

CNHAED1-2

CNHAED2-2

CNPIN

CNMIC

CNCIS

CNPN-2

CNCIS-2

1.2. Position of band

Band(100mm)

Extension board unit

CNMIC(Not used)

8 – 1

Page 92

UX-B20U/UX-B20C/B25C

2. Relay board unit

2.1. Relay board unit

1. Remove the LIU, Control PWB and Power Supply PWB from this unit, and mount the board unit instead.

Before connecting the wiring to the relay board unit, set the test PWB switches to the fixed position.

2. The setting is as follows.

· The extension cables are used as one pair.

Extension cable

· The hook switch is manually operated.

CNLIU

+3.3V

(GREEN)

CHECK CONTROL PWB

EXTENSION

PWB

(YELLOW)

PIN(YELLOW) +3.3V(GREEN)

CNLIU

CHECK LIU PWB

The hook switch is operated by the mechanical unit switch and the test PWB switch. When performing installation in the machine unit, set the test PWB switches to the fixed position.

Mechanical unit PWB to be tested

Actual operation with mechanical unit

Hook SW

PIN EXTENSION CABLE (QCNWG231CSCZZ)

YELLOW

GREEN

ON/OFF operation ON-HOOK

PWB sensor check

ON/OFF operationHook SW ON-HOOK

CHECK

CONTROL PWB

8 – 2

Page 93

3. Shading paper

• The white and black basis is applied to remember the shading waveform. Be sure to perform this operation when replacing the battery or replacing the control PWB. Execute in the shading mode of DIAG mode.

SHADING WAVE MEMORY STANDARD PAPER (PSHEZ3579SCZZ)

UX-B20U/UX-B20C/B25C

8 – 3

Page 94

UX-B20U/UX-B20C/B25C

[2] Changing the record paper size

1. How to change the A4 size and letter size of the

record papers

1) It becomes the record paper of the A4 size by installing A4 paper guide (PGiDM2673XHZZ) which shows in the drawing. Remove A4 paper guide when you use the record paper of the letter size.

A4 PAPER GUIDE PGiDM2673XHZZ

2) Set soft switch SW-L2 No.1 and the initialization of SW-L2 No.2 as follows.

SW NO.

DATA

NO.

Paper set size LETTER LEGAL A4 OPTION 1No. 10010 2No. 20100

ITEM

Hook

Paper tray

Switch setting and function

Initial

setting

Remarks

8 – 4

Page 95

[3] Rewriting version up the FLASH ROM

1. Step 1 File setting (1)

Execute “FAX_LOADER.EXE” and extract the compressed file.

File contents:

2. Step 2 File setting (2)

Copy the downloaded file ( .VER) to ¥FAX_LOADER¥DATA¥FAX¥ in the default directory (given directory).

3. Step 3 Flash rewriting

Description for application is detailed in the attached document below.

• Rewriting the flash for the FAX engine (with software (Tera Term) for the PC)

UX-B20U/UX-B20C/B25C

Com

Port

DUNTK404CSCZZ

RS-232C

Cable

RS-232C DSUB 9PIN

Program Loader BOX

CN2CN1

Main Cable

QCNW-306BSCZZ

3PIN

CNPRG

FAX

Machine

Control

PWB

Fig. 1 Connected chart

PARTS CORD PRICE RANK NAME REMARKS

DUNTK404CSCZZ DG Program loader BOX Includes RS-232C cable QCNW-306BSCZZ BF Main cable Connects Program loader BOX and FAX machine.

Table 1. Program loader unit

8 – 5

Page 96

UX-B20U/UX-B20C/B25C

FRONT PANEL BACK PANEL

MAIN SW

OFF

Voltage

3.3V

FAX PWB rewriting

CALIBRATION

OFF

MODE CALIBRATION

CALIBRATION

DOWNLOAD

BAT SW

OFF

Cordless

DOWNLOAD

CN1 CN2

(1) Before connecting the PC and Program loader BOX with RS-232C cable.

Set the switches of Program loader BOX as follows. (a) MAIN SW OFF (down) (b) CALIBRATION OFF (down) (c) BATSW OFF (down) (d) PARK SW OFF (down) (e) IC Voltage to 3.3V (down) (f) MODE to DOWNLOAD (down)

PARK SW

OFF

MAIN

Fig. 2. Program loader BOX

(2) After connecting the PC and Program loader BOX with RS-232C cable. (1*)

Set the switch of Program loader BOX as follows. (g) MAIN SW ON (up)

RS-232C

DSUB 9PN

(3) Power supply to the FAX machine.

Plug the power cable of the FAX machine to the outlet. (2*)

FUSE

CORD

(4) Connect Program loader BOX and the Control PWB of the FAX machine (CNPRG) with Main cable. (3*) —

Table 2. Program loader BOX connection procedures

1*: Connect one end of RS-232C cable to the COM port of the PC and the other end to RS-232C DSUB 9PIN of Program loader BOX.

2*: Press and hold down the keys 1 and 3 simultaneously while turning on the FAX machine and until “DOWNLOAD MODE” appears.

3*: Perform the procedure (3) before (4). (Turn on the Program loader BOX and the FAX machine before connecting Main cable and the FAX machine.)

Connect one end of Main cable to the connector of the Control PWB connector for the FAX machine (CNPRG) (refer to Fig. 3), and the other end to CN1 of Program loader BOX.

From Program Loader BOX

Main Cable QCNW-306BSCZZ

Control PWB

FAX machine

CNPRG

(CN1)

Download cover

Fig. 3. Connection of Main cable

8 – 6

Page 97

4. Using software for the PC (Tera Term)

Uncompress the compressed file of Tera Term.

Execute the “SETUP.EXE” from compressed files to install Tera Term.

Execute the “ttermpro.exe” to start Tera Term.

1. Select “New connection” from the pull-down menu of “File”.

UX-B20U/UX-B20C/B25C

1) Check “Serial”.

2) Select the port number in which the RS-232C cable is connected to.

3) Click “OK” for confirmation.

↓

Proceed to 2.

8 – 7

Page 98

UX-B20U/UX-B20C/B25C

2. Select “Serial port” from the pull-down menu of “Setup”.

Select the port number which the RS-232C cable is connected to.

Set the other parameters as follows and click “OK” for confirmation.

↓

Proceed to 3.

8 – 8

Page 99

3. Perform procedures described in Table 3.

UX-B20U/UX-B20C/B25C

(1) Before connecting the PC and Program loader BOX with RS-232C cable.

Set the switches of Program loader BOX as follows. (a) MAIN SW OFF (down) (b) CALIBRATION OFF

FAX PWB rewriting

1*: Connect one end of RS-232C cable to the COM port of the PC and the other end to RS-232C DSUB 9PIN of Program loader BOX.

2*: Press and hold down the keys 1 and 3 simultaneously while turning on the FAX machine and until “DOWNLOAD MODE” appears.

3*: Perform the procedure (3) before (4). (Turn on the Program loader BOX and the FAX machine before connecting Main cable and the FAX machine.) Connect one end of Main cable to the connector of the Control PWB connector for the FAX machine (CNPRG) (refer to Fig. 3), and the other end to CN1 of Program loader BOX.

After performing procedures described in Table 3, press down the START key on the FAX machine.

“DOWNLOAD MODE WT” appears on the LCD.

↓

Proceed to 4.

(down) (c) BATSW OFF (down) (d) PARK SW OFF (down) (e) IC Voltage to 3.3V (down) (f) MODE to DOWNLOAD (down)

Table 3. Program loader BOX connection procedures

(2) After connecting the PC and Program loader BOX with RS-232C cable. (1*)

Set the switch of Program loader BOX as follows. (g) MAIN SW ON (up)

(3) Power supply to the FAX machine.

Plug the power cable of the FAX machine to the outlet. (2*)

(4) Connect Program loader BOX and the Control PWB of the FAX machine (CNPRG) with Main cable. (3*)

—

8 – 9

Page 100

UX-B20U/UX-B20C/B25C

4. Select “Send file” from the pull-down menu of “File”.

Enable the Binary in “Option” and open “Atl0. cmd”.

↓

Proceed to 5.

8 – 10

sharp UXB20U, UX-B20, UX-B25 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

CHAPTER 1. GENERAL DESCRIPTION

[1] Specifications

[2] Operation panel

[3] Transmittable documents

1. Document Sizes

5. Automatic Document Feeder Capacity

2. Paper Thickness & Weight

3. Document Types

6. Readable Width & Length

4. Cautions on Transmitting Documents

[4] Installation

1. Site selection

2. Removing the packing tape

3. Connecting the handset

4. Attaching the paper tray

5. Loading printing paper

6. Connecting the power cord

7. Installing the print cartridge

8. Setting the paper size

9. Quality mode (using more/less ink)

11. Connecting the telephone line cord

12. Clearing a jammed document

13. Clearing jammed printing paper

[5] Quick setup guide

[6] Quick reference guide

3. Storing Auto Dial Numbers

1. Sending Faxes

2. Receiving Faxes

CHAPTER 2. ADJUSTMENTS

[1] Adjustments

4. Settings

1. General

2. Adjustments of output voltage (FACTORY ONLY)

5. Volume adjustments

3. IC protectors replacement

[2] Diagnostics and service soft switch

1. Entering the diagnostic mode

2. Diagnostic items

3. Diagnostic items description

4. Entering the printer diagnostic mode

5. Printer diagnostic items

6. Printer diagnostic items description

7. How to make soft switch setting

8. Soft switch description

SW-A1 No. 1 Protect from echo

[3] Troubleshooting

[4] Error code table

1. Communication error code table

CHAPTER 3. MECHANISM BLOCKS

[1] General description

1. Document feed block and diagram

2. Document feed operation

3. Hopper mechanism

4. Document release

5. Recording block

[2] Ink jet printer

1. Engine specifications

2. Abbreviations

3. Diagnostic information

4. Circuit description

5. Overall troubleshooting of Printer

[3] Disassembly and assembly procedures

CHAPTER 4. DIAGRAMS

[1] Block diagram

[2] Wiring diagram

[3] Point-to-point diagram

CHAPTER 5. CIRCUIT DESCRIPTION

[1] Circuit description

1. General description

2. PWB configuration

3. Operational description

[2] Circuit description of control PWB

1. General description

2. Description of each block

[3] Circuit description of LIU PWB

1. LIU block operational description