Sharp FACSIMILE FO-2950M Service Manual

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Page 1

FO-2950MGR/GH/MY/TH

SERVICE MANUAL

No. 00ZF2950GRSME

FACSIMILE

MODEL FO-2950M

SELECTION CODE COUNTRY

GR General Area GH General Area MY Malaysia

TH Thailand

CAUTION

This laser facsimile is a class 1 laser product that complies with 21CFR 1040.10 and 1040.11 of the CDRH or IEC60825-1 standard. This means that this machine does not produce a hazardous laser radiation. The use of controls, adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.

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

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

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

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

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

4) The cover of Laser Printer Unit contains the safety interlock switch. Do not defeat the safety interlock by inserting wedges or other items into the switch slot.

Laser Wave Length : 780 ±15 nm Laser Pulse Times Laser Output Power : 0.4 mW ± 0.05mW

: (13.95 ± 3 µs)/7mm

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

SHARP CORPORATION

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

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FO-2950MGR/GH/MY/TH

CHAPTER 1. GENERAL DESCRIPTION

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

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

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

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

[5] Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

[6] Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

[7] Quick reference guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

CHAPTER 2. ADJUSTMENTS

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

[2] Diagnostics and service soft switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

[3] Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26

[4] Error code table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27

CHAPTER 3. MECHANICAL DESCRIPTION

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

[2] Disassembly, assembly, lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

CONTENTS

CHAPTER 4. DIAGRAMS

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

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

[3] Point-to-point diagram and connector signal name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

CHAPTER 5. CIRCUIT DESCRIPTION

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

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

[3-1] Circuit description of TEL/LIU and Hook SW PWB (GR/GH/MY) . . . . . . . . . . . . . . . . . . . . . . . . 5-21

[3-2] Circuit description of TEL/LIU and Hook SW PWB (TH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-24

[4] Circuit description of power supply PWB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-27

[5] Circuit description of CIS UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-28

CHAPTER 6. CIRCUIT SCHEMATICS AND PARTS LAYOUT

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

[2-1] TEL/LIU and Hook SW PWB circuit (GR/GH/MY) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12

[2-2] TEL/LIU and Hook SW PWB circuit (TH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17

[3] Printer PWB circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-19

[4] Power supply PWB circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-22

[5] Operation panel PWB circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-24

CHAPTER 7. OPERATION FLOWCHART

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

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

CHAPTER 8. OTHERS

[1] Service Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

[2] IC signal name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

PARTS GUIDE

Page 3

CHAPTER 1. GENERAL DESCRIPTION

[1] Specifications

FO-2950MGR/GH/MY/TH

• GENERAL

Automat ic dialling Rapid Key Dialling: 20 numbers Speed Dialling: 100 numbers

Memo ry size* 2 MB (approx. 130 pages) Mode m speed 14,400 bps (max.)

Automatic fallback to lower speeds.

Transmission time* Approx. 6 seconds Toner cartridge yield Initial starter cartridge (included with

(4% page coverage, A4 paper) Replacement cartridge (FO-29DC):

Drum car tridge yield Initial starter cartridge (included with

fax machine): 20,000 pages (avg.) Replacement cartridge (FO-29DR):

Scanning resolution Fax/copy: Horizontal: 8 pels/mm

Vertical: Standard: 3.85 lines/mm Fine /Halftone: 7.7 lines/mm Super fine: 15.4 lines/mm

PC: Enhanced 600 dpi

Automatic d ocument 20 pages max. (80 g/m2 A4 paper) feeder

fax machine): Approx. 1,875 pages

Approx. 3,750 pages

20,000 pages (avg.)

Effective Scanning width 210 mm max. Effectiv e Printing width 202 mm max. (MY/TH)

208 mm max. (GR/GH)

Recepti on mo de s Fax, Tel, Tel/Fax, A.M. Scanning speed 8 ppm (A4 paper) Full Dual Access Yes Copy function Single/Multi/Sort (99 copies/page) Power requirements 220-240 V AC, 50/60 Hz Operating temperature 10 - 30°C Humidity 20 to 85% RH Power consumption Standby: 9.0 W

Maximum: 840 W Dimensions Width: 386 mm

Depth: 398 mm Height: 169 mm

Weight Approx. 6.3 kg

* Based on ITU-T Test Chart #1 at standard resolution in Sharp special

mode, excluding time for protocol signals (i.e., ITU-T phase C time only).

Halftone (grayscale) 64 levels (PC scan: 256 levels) Paper tray capacity 200 sheets (80 g/m Compression scheme MMR, MR, MH, Sharp (H2) Applicable telephone line Public switched telephone network Compatibility ITU-T (CCITT) G3 mode Printing resolution Horizontal: 16 lines/mm

Vertical: 15.4 lines/mm PC Printing: 600 dpi (enhanced 1,800 dpi)

Input document size Automatic feeding: Width: 148 to 216mm Length: 140 to 297mm Manual feeding: Width: 148 to 216mm Length:140 to 1,000mm

A4 paper)

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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FO-2950MGR/GH/MY/TH

[2] Operation panel

1 2 3 4 7 8 9 13

ABC21DEF

SPEED

DIAL

JKL

GHI MNO

PQRS WXYZ

TUV

REDIAL

HOLD/

SPEAKER

SPEED DIAL key

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

PAPER CHECK

TONER EMPTYPCIN USE

COPY/HELP

START

FAX

TEL

LINE

IN USE

REDUCTION/

ENLARGEMENT

STOP

10 11 125 6

A.M.

FUNCTION

RECEPTION

MODE

RESOLUTION

VOLUME

DOWN

03 04

BROADCAST

08070605

12111009

16/POLL

20/G419/G318/G217/G1

14151620 1921 171822

BROADCAST key

Press this key to send a document to a group of receiving fax machines.

REDIAL key

Press this key to automatically redial the last number dialled.

PAPER CHECK indicator

This lights when the paper tray is out of paper, the paper has jammed, the printer compartment cover is open, or a paper size error has occurred.

TONER EMPTY indicator

This blinks when the toner cartridge nears empty and lights steadily when the toner cartridge needs replacement.

Display

This displays messages and prompts during operation and programming.

Panel release

Grasp this release and pull toward you to open the operation panel.

PC IN USE light

This blinks when data is being sent to or from the computer connected to the fax machine.

LINE IN USE light

This lights when the fax machine is using the telephone line.

RECEPTION MODE key

Press this key to select the reception mode. An arrow in the display will point to the currently selected reception mode.

FUNCTION key

Press this key to select special functions and settings.

RESOLUTION Keys

Press this key to adjust the resolution for faxing or copying.

VOLUME (UP/DOWN) keys

Press these keys to adjust the volume of the speaker when the SPEAKER key has been pressed, or the volume of the ringer at all other times. The keys can also be used to scroll through

FUNCTION key settings.

Rapid Dial Keys

Press one of these keys to dial a fax number automatically, or send a document as an E-mail attachment to a preset E-mail address.

E-MAIL key

Press this key to send a document as an E-mail attachment. After you press the key, your specified E-mail program will open to let you enter the E-mail address, a subject, and a message if desired.

REDUCTION/ENLARGEMENT key

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

STOP key

Press this key to cancel an operation before it is completed.

START key

Press this key to begin transmission when using Speed Dialling, Direct Keypad Dialling, or Normal Dialling.

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.

HOLD/SEARCH key

When dialling, press this key to search for an auto-dial fax number. During a phone conversation, press this key to put the other party on hold.

SPEAKER key

Press this key to listen to the line and fax tones through the speaker when faxing a document. Note: this is not a speakerphone. You must pick up the handset to talk with the other party.

Number Keys

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

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FO-2950MGR/GH/MY/TH

(

)

[

]

[

]

[3] Transmittable documents

1. Document Sizes

Normal size

(Min.)

128 mm

148 mm 210 mm

* 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.

2. Paper Thickness & Weight

Weight Metric system 52g/m indication indication Thickness Metric system 0.06mm 0.1mm indication indication Document Document size Minimum (148mm × 128mm) size Range A4 (210mm × 297mm)

Number of Document size ADF sheets

Paper Kind Paper of fine quality/bond paper/ quality Kent paper

Weight Legal 1 sheet

width 148 – 210 mm

length 128 – 297 mm

(Max.)

80g/m

1.0 m

(Max.)

Normal size

Indication Lower Limit Upper Limit

297 mm

216 mm

Special size

Product specifications

Letter (216mm × 279mm) Legal (216mm × 356mm) Minimum ~ Letter/A4 size 20sheets

More than 90 kg Below 135kg 1 sheet

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.

5. Automatic Document Feeder Capacity

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

Normal size: max. 20 sheets Special size: single sheet only (manual feed)

NOTES: • If you need to send or copy more 20 pages, place the ad-

ditional pages and carefully in the feeder just before the last page is scanned. Do not try to force them in, as this may cause double-feeding or jamming.

• If your document consists of several large or thick pages

which must be loaded one at a time, insert each page into the feeder as the previous page is being scanned. Insert gently to prevent doublefeeding.

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

202 mm max.

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 (blueprint) Diazo copy documents of a normal contrast may be transmitted.

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

0.16" (4 mm) 0.16" (4 mm) Readable width

• Readable length

This is the length of the document sent minus 0.2” (5 mm) from the top and bottom edges.

0.2" (5mm)

Readable length

5mm

0.2"

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FO-2950MGR/GH/MY/TH

[4] Installation

1. Site selection

T ake 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 sun-

light, 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 10° and 30°C (50° and 86°F).

• The humidity should be between 20% and 85% (without condensa-

tion).

ELECTRICITY

FO-2950MGR/GH/TH

AC 220-240 V, 50/60 Hz, earthed (2-prong) AC outlet is required.

FO-2950MMY

AC 220-240 V, 50/60 Hz, earthed (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 speciality stores

2. Installing the toner cartridges

The laser printer in your fax machine uses a toner cartridge and a drum cartridge. The drum cartridge comes pre-installed, and the toner cartridge must be installed.

The starter toner cartridge included with your fax can print approximately 1,875 A4-size pages at 4% page coverage.

• The drum cartridge can print approximately 20,000 A4-size pages. When replacing the drum cartridge, use a Sharp FO-29DR drum cartridge.

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

1

Grasp the print compartment cover at both sides as shown, and

pull up to open the cover.

• Caution! The fusing unit inside the print compartment becomes very hot during operation. Do not touch the inside of the compartment or the paper guide on the underside of the print compartment cover.

When replacing the toner cartridge, use a Sharp FO-29DC toner cartridge. One cartridge can print about 3,750 A4-size pages.

TELEPHONE SOCKET

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

• Plugging the fax machine into a socket which is not a socket may

result in damage to the machine or your telephone system. If you do not know what kind of socket you have, or need to have one installed, contact the telephone company.

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

If the machine is moved from a cold to a warm place, it is possible that the reading glass may fog up, preventing proper scanning of documents for transmission. To remove the fog, turn on the power and wait approxi mately 2 hours before using the machine.

2

The drum cartridge has been installed at the factory. Gently pull

the paper tab to remove the black sheet of protective paper from the cartridge.

• Be careful not to tear the paper nor leave any pieces of paper in the machine.

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

Remove the new toner cartridge from its packaging. Shake the

cartridge side to side four or five times to distribute the tone evenly within the cartridge.

Carefully remove the band and the cardboard packaging material from the toner cartridge.



Hold the toner cartridge by the handle with the stamped markings

on the cartridge facing upwards, and insert the cartridge into the print compartment.

FO-2950MGR/GH/MY/TH



Reset the toner counter by pressing the following keys:

FUNCTION

Display shows:



Reset the drum counter by pressing the following keys:

• Note: This setting is only necessary after you have replaced the drum cartidge (not after replacing the toner cartridge).

CLR TONER COUNT PRESS START KEY

START

FUNCTION



Place your thumb on the center of the handle where it is marked

PUSH, and push the handle down and in so that the cartridge fits into place.



Close the print compartment cover, pressing down firmly on each

side to make sure it is completely closed.

Display shows:

CLR DRUM COUNT PRESS START KEY

START

3. Replacing the drum cartridge

To maintain excellent printing quality, we recommend that you replace the drum cartridge about 20,000 pages have been printed. You can view the number of pages printed in the display by pressing the following sequence of keys:

FUNCTION

START

When finished, press the STOP key to return to the date and time display.

Replace the drum cartridge with the following cartridge:

Sharp FO-29DR drum cartridge



Grasp the print compartment cover at both sides as shown, and

pull up to open the cover.

• Caution! The fusing unit inside the print compartmt becomes very hot during operation. Do not touch the inside of the compartment or the paper guide on the underside of the print compartment cover.

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FO-2950MGR/GH/MY/TH



Grasp the finger hold on the toner cartridge handle where it is

marked PUSH, and pull the handle out. Rehold the handle and pull the toner cartridge out of the compartment.

• Place the toner cartridge on a sheet of paper on a level surface.



Grasp the tabs on the drum cartridge handle and gently pull the

cartridge out of the machine.



Gently pull the paper tab to remove the black sheet of protective

paper from the drum cartridge.

• Be careful not the tear the paper or leave any pieces of paper in the machine



Replace the toner cartridge and reset the drum counter. (Refer to

Installing the Toner Cartridge .)

4. Connections



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 socket.



Remove the new drum cartridge from its packaging.



Insert the drum cartridge into the print compartment, aligning the

guides on the cartridge with the runners on the sides of the compartment.

Make sure the handset cord goes into the socket 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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FO-2950MGR/GH/MY/TH



Connecting the power lead

Plug the power lead into a 220-240 V, 50/60 Hz, earthed (2 or 3-prong) AC outlet.

• When disconnecting the fax, unplug the telephone line cord before unplugging the power lead.

• Caution! The mains outlet (socket outlet) should be installed near the equipment and be easily accessable.

For GR/GH/TH

2) Press 1 to select tone dialling, or 2 to select pulse dialling.

TONE

PULSE

3) Press the STOP key to return to the date and time display.

STOP

4

Attaching the paper tray and document supports



1) Attach the paper tray.

For MY

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 lead.

2) Attach the received document tray.

• Note: If your area experieces 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 your dealer or most telephone specialty stores.



Connecting the telephone line cord

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

3) Attach the original document support.

• Make sure the front side of the support faces you (the support should curve slightly toward you).

Be sure to insert the line into the TEL. LINE socket. Do not insert it into the TEL. SET socket.

• Note: Your fax is set for tone dialling. If you are on a pulse dial line, you must set your fax for pulse dialling. Press the keys on the operation panel as follows:

1) Press these keys.

[GR/GH]

FUNCTION

[MY/TH]

FUNCTION

The display will show:

DIAL MODE 1=TONE, 2=PULSE

5

Extension phone (optional)

If desired, you can connect an extension phone to the TEL. SET socket on the fax.

1) Remove the seal covering the TEL. SET socket.

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FO-2950MGR/GH/MY/TH

2) Connect the extension phone line to the TEL. SET socket.

5. Loading Printing Paper

You can load up to 200 sheets of A4 paper (max. 80 g/m paper tray.

Caution!

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

) in the



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

• Make sure that the stack is not higher than the marked line. Loading too much paper may cause paper jams and misfeeds.

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

Important:

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



Make sure the stack of paper is aligned against the right pape

guide, and then gently move the left paper guide to the A4 position. (GR/GH : or to the 8 1/2 position for letter or legal paper)

Pull out the paper tray extension.

Fan the paper, and then tap the edge against a flat surface to even the stack.

Pull the paper release lever toward you.



Push the paper release lever back down.

• Note: If the paper does not feed correctly, remove the entir stack from the tray and repeat the loading procedure from the beginning.

[GR/GH only]

The fax has been set at the factory to scale the size of receive faxes to letter size paper. If you have loaded legal paper, you must change the paper size setting to legal. Press these keys:

FUNCTION



The display will show:

PAPER SIZE 1=LETTER, 2=LEGAL

Press 1 to select LETTER or 2 to select LEGAL.

(You can also press 3 to select A4. )

LETTER : LEGAL : A4 :

The display will briefly show your selection and then show :

FINE PRIORITY 1=YES, 2=NO

Press the STOP key to return to the date and time display.

PAPER SIZE 3=A4

1 2 3

STOP

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FO-2950MGR/GH/MY/TH

6. Clearing a jammed document

If the original document doesn't feed properly during transmission o copying, or DOCUMENT JAMMED appears in the display, first try pressing the START key. If the document doesn't feed out, open the operation panel and remove it.

Important:

Do not try to remove a document without opening the operation panel. This may damage the feeder mechanism.

Open the operation panel by grasping the panel release and pulling up.

Remove the document.

7. Clearing jammed printing paper



If most of the jammed page is protruding from the back of the fax,

pull the paper release lever toward you and try pulling the page out.



If the jammed page comes out, take out the rest of the paper in

the tray, straighten the stack, put it back in the paper tray, and push down the paper release lever.

• If you are unable to clear the jam in this way, continue with the following steps.

Close the operation panel, making sure it clicks into place.



Grasp the print compartment cover at both sides as shown, and

pull up to open the cover.

• Caution!

The fusing unit inside the print compartment becomes very hot

during operation. Be careful not to touch the inside of the compartment.

1 – 9

Page 12

FO-2950MGR/GH/MY/TH

4

Grasp the finger hold on the toner cartridge handle where it is

marked PUSH, and pull the handle out. Hold the handle and pull the toner cartridge out of the compartment.

• Place the toner cartridge on a sheet of paper on a level surface.

5

Grasp the tabs on the drum cartridge handle and gently pull the

cartridge out of the machine.

8

Replace the drum cartridge.

• To insert the cartridge, align the guides on the cartridge with the runners on the sides of the compartment.



Replace the toner cartridge and close the print compartment

cover. (Refer to Installing the Toner Cartridge.)

6

Wrap the drum cartridge in a large sheet of paper as shown at

right so that the green drum section is shielded from light, and place it gently on a level surface.

• Do not touch the green drum in the drum cartridge. This will damage the drum surface.

• Do not expose the drum to direct light. This will damage the drum.

7

Gently pull the jammed paper out of the machine.

• If needed, turn the wheel on the right side of the fusing unit to eject the paper from the machine.

• Caution!

Do not use excessive force to pull the jammed paper out. If the

paper tears and a piece remains inside the machine, a service call may be necessary to remove the remaining piece.

Fusing unit

Wheel

1 – 10

Page 13

FO-2950MGR/GH/MY/TH

[5] Maintenance

1. Scanning glass and rollers

Clean the scanning glass and rollers frequently to ensure that you transmitted images and copies are of the highest quality.

Open the operation panel (grasp the panel release and pull up), and wipe the scanning glass, rollers and white backplate with a soft cloth.

• Make sure that all dirt and stains (such as correcting fluid) ar removed, as dirts and stains will cause vertical lines on transmitted images and copies.

Document rollers

White backplate

Scanning glass

Grasp the finger hold on the toner cartridge handle where it is

marked PUSH, and pull the handle out. Rehold the handle and pull the toner cartridge out of the compartment.

• Place the toner cartridge on a sheet of paper on a level surface.

Grasp the tabs on the drum cartridge handle and gently pull the

cartridge out of the machine.

2. The housing

Wipe the external parts and surface of the machine with a dry cloth.

• Caution!

Do not use benzene or thinner. These solvents may damage o discolor machine.

3. Cleaning the drum cartridge

If you find that characters or parts of an image are missing from you printed pages, the drum in the drum cartridge may need cleaning. Follow the steps below to clean the drum.

Grasp the print compartment cover at both sides as shown, and

pull up to open the cover.

• Caution!

The fusing unit inside the print compartment becomes very hot during operation. Do not touch the inside of the compartment or the pape guide on the underside of the print compartment cover.

Take a sheet of clean paper and roll it into a tube. Roll it tightly so

that the diameter of the holes at each end is less than the thickness of your little finger.

Gently wipe the surface of the drum with the rolled-up paper to

remove any particles of toner caked on the drum.

• Do not let the drum surface come into contact with anything other than the rolled-up paper. Fingerprints, water, alcohol, and othe solvents will damage the drum surface.

• Do not touch the drum surface with the edges of the rolled-up paper.

No good

1 – 11

Page 14

FO-2950MGR/GH/MY/TH

Replace the drum cartridge.

• To insert the cartridge, align the guides on the cartridge with the runners on the sides of the compartment.

Replace the toner cartridge and close the print compartment cov-

er. (Refer to Installing the Toner Cartridge.)

[6] Troubleshooting

1. Using the RESET key

If the fax machine stops responding when you press any of the operation panel keys, you must reset it. This can be done as follows:

Grasp the print compartment cover at both sides as shown, and

pull up to open the cover.

• Caution!

The fusing unit inside the print compartment becomes very hot

during operation. Do not touch the inside of the compartment o the paper guide on the underside of the print compartment cover.

Use a ballpoint pen to press the RESET button.

• Note: Pressing the RESET button clears any documents that are stored in memory.

Close the print compartment cover, pressing down firmly on each

side to make sure it is completely closed.

1 – 12

Page 15

2. Message and Signals

OFF HOOK

OUT OF PAPER

ON HOOK DIAL

This appears if you forgot to replace the handset after using it to dial and send a fax. Replace the handset or press the STOP key to clear the message.

The SPEAKER key has been pressed and the fax machine is waiting for you to dial.

You are out of printing paper (or the paper release lever is open). Load paper as explained in Loading Printing Paper.

PAPER JAMMED

The printing paper is jammed. See the Clearing Paper jams.

SEND READY

A document has been loaded and the fax machine is waiting for you to begin faxing or copying.

REPLACE TONER

The toner cartridge must be replaced.

SEARCH DIAL

The HOLD/SEARCH key has been pressed. Press # or to search for an automatic dialling number, or press the STOP key to return to the date and time display.

TOTAL PAGE(S) 1

Number of pages transmitted, received, or copied.

TOTAL PAGE(S)

Number of pages transmitted, received, or copied.

TX MEMORY FULL

This message appears if you insert a document into the document feeder when 30 transmission jobs are already waiting in memory for transmission. You can continue setting up the transmission job after the job currently being sent is completed. This message may also appear if faxes have been received to memory due to a printing problem. In this case, resolve the problem so that printing can take place and free memory.

SIZE ERROR

This message appears if paper smaller than A4 size has been loaded. Change the paper to A4 size paper. (Except for GR/GH)

The paper size setting is longer than the paper loaded in the tray. Change the paper size setting as explained in Loading Printing Paper. This message also appears if paper smaller than A4 size has been loaded. In this case, change the paper to letter, legal, or A4 size paper. (GR/GH only)



Display messages

FO-2950MGR/GH/MY/TH

CAN'T PRINT DATA

CHECK PAPER SIZE

CHECK PC

COVER OPEN

DOCUMENT JAMMED

FUNCTION MODE

GRP. SPACE FULL

HOLD

LINE ERROR

MEMORY IS FULL

MEMORY PRINTING

NO DATA

NO # STORED

A fax has been received to memory because printing is not possible. This message will alternate with a message that indicates the problem. The fax will print out automatically when the problem is resolved.

An incorrect size of paper has been loaded in the paper tray. Remove the paper and load A4-size paper. (Except for GR/GH)

The paper size setting is incorrect. Change the paper size setting. (GR/GH only)

This appears if you press the E-MAIL key and your computer is not turned on or is not correctly connected to the fax machine.

The print compartment cover is open. Press down firmly on both sides of the print compartment cover to close it.

The original document is jammed. See the Clearing Paper Jams.

The FUNCTION key has been pressed.

This appears if you attempt to program a Group Key when all Group Keys have already been programmed.

The HOLD/SEARCH key has been pressed to put the other party on hold during a phone conversation. Press the HOLD/SEARCH again to take the other party off hold.

Transmission or reception was not successful. Press the STOP key to clear the message and then try again.

The memory is full. This may occur during fax reception if too much data is received before the pages can be printed out. If faxes have been received to memory because printing is not possible (an additional message will indicate the problem), resolve the problem so that printing can continue.

The fax is preparing to or printing out a document from memory.

This appears if you attempt to search for an automatic dialling number when none have been stored.

You have tried to dial or clear a Rapid Key or Speed Dial number that hasn't been programmed (a full number hasn't been assigned to it).

1 – 13



Audible signals

Continuous tone

Intermittent tone (3 beeps)

Rapid intermittent tone

3 seconds

5 seconds (1 seconds on, 1 second off)

Continuous (0.7 seconds on,

0.3 seconds off)

Indicates the end of transmission, reception, or copying.

Indicates incomplete transmission, reception, or copying.

Indicates that the handset is off hook.

Page 16

FO-2950MGR/GH/MY/TH

7. When finished, press:

Entering Your Name and

Number

1.Press:

Display shows:

2. Press:

3. Enter your fax number (max. of 20 digits)

by pressing the number keys.

•

To insert a space between digits, press

the # key.•If you make a mistake, press the

SPEED

DIAL

key to backspace and clear the mis-

take.

4. Press:

5.Enter your name by pressing the appro-

priate number keys as shown below.

•

To enter two letters in succession that

require the same key, press the

SPEAKER

key after entering the first let-

ter.

Setting the Date and Time

1.Press:

Display shows:

2.Press:

3. Enter two digits for the day (01 to 31).

4.Enter two digits for the month (01 to 12).

5.Enter four digits for the year (Ex: 2000)

6. Enter two digits for the hour (00 to 23)

and two digits for the minute (00 to 59).

Storing and Clearing Auto

Dial Numbers

1. Press:

Display shows:

2.Press

to store a number or

to clear a

number.

3.Press a Rapid Key or enter a 2-digit

Speed Dial number (from

). (If

you are clearing a number, go to Step 7.)

4. Enter the full fax/telephone number.

5.Press:

6. Enter the name of the location by press-

ing number keys.

7. Press:

OWN NUMBER SET

PRESS START KEY

A =

B =

C =

D =

E =

F =

G =

H =

I =

J =

K =

L =

M =

N =

O =

P =

Q =

R =

S =

T =

U =

V =

W =

X =

Y =

Z =

SPACE =

•

To change ca se, press the

REDIAL

key.

Press # or to scroll throug h symbols

and special characters.

6.When finished, press:

FAX/TEL # MODE

1=SET, 2=CLEAR

DATE & TIME SET

PRESS START KEY

START

STOP

FUNCTION

STOP

FUNCTION

Sending Faxes

Place you r document

(up to 20 pages) face

down in the do cu ment

feeder.

Normal Dialling

1.Lift the handset or pre ss

2.Dial the fax number.

3.Wait for the reception tone (if a pers on

answers, ask them to press their Start

key).

4.Press:

Rapid Key Dialling

Press the appropriate Rapid Key.

Transmission will begin automatically.

Speed Dialling 1.Press:

2.Enter the 2-digit Speed Dial numb er.

3.Press:

Receiving Faxes

Press the

RECEPTION MODE

key until the

arrow in the display points to the desi red

reception mode.

FAX mode:

The fax machine automatically

answers on the set number of rings and

receives the incoming docu m ent .

TEL mode:

Beep

START

SPEAKER

SPEED

DIAL

START

RECEIVING

RECEPTION

MODE

FAX TEL

A.M.

01 FEB 10:30

M:00% STAND-BY

FAX TEL

A.M.

M:00% STAND-BY

FAX TEL

A.M.

M:00% STAND-BY

FAX TEL

A.M.

M:00% STAND-BY

01 FEB 10:30

A.M. mode:

Select this mode when an

answering machine is conne ct ed t o t he fax

and the answering machine is turned on.

TEL/FAX mode:

This mode is convenient

for receiving both faxes and voice calls.

When a call comes in, the fax will detect

whether it is a voice call (including manually

dialled fax transmissions),or an

automatically dialled fax.

[7] Quick reference guide

1 – 14

Page 17

CHAPTER 2. ADJUSTMENTS

[1] Adjustments

FO-2950MGR/GH/MY/TH

General

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

1. Adjustments

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.

Output voltage settings

Power

Printer PWB

Supply PWB

CNPWCN101

Fig. 1

Output Voltage limits

+5V 4.75V~5.25V

+24VH 23.04V~24.96V

+24V( ) 23.04V~24.96V

Turn on an inter-lock switch on the power supply PWB, and measure it when you measure +24V

Connector

PIN No.

1 +5V 2DG 3DG 4 +24VH 5MG 6MG 7 +24VS 8 PWRLY–

9 HLON– 10 +24V 11 +24V 12 ZC

No.

CNPW

2. High voltage power adjustments

The high voltage power adjustments are composed of the MC output voltage adjustment and the DC bias output voltage adjustment. Either adjustment is performed with the diag function. (MAIN CHG ADJUST MODE)

MC output voltage adjustment

In the measurement circuit shown below, adjust VR1 to be –1050V ~

–1200V (aim at –1100V)

Measure with the high voltage tester (effective value meter)

• Capacitor: 1000pF/3KV (VCKYQY3FB102K)

• Diode: SHV-03 (VHDSHV03///-1)

DRUM

MC output voltage check

–

VR1 (MC output voltage adjustment volume)

Fig. 3

Fig.2

2 – 1

Page 18

FO-2950MGR/GH/MY/TH

DC bias output voltage adjustment

Adjust VR2 so that the output voltage is –310V ±5V For measurement, use the high voltage tester (effective value meter).

VR1 (MC output voltage adjustment volume)

DC-Bias Output voltage check

–

DRUM

DC-Bias

–

DC-Bias Output voltage check

VR2 (DV bias output adjustment volume)

Fig.3

Transfer charger voltage check

After MC output voltage adjustment and DC bias output voltage adjustment, check transfer charger voltage. Check that the output voltage is +3200V ~ +3700V. For measurement, use a high voltage tester (effective value meter).

Transfer charger Output voltage check

–

DRUM

Transfer changer

Output voltage check

Note: For measurement, do not remove Printer PWB from the bottom

plate.

VR1 (MC output voltage adjustment volume)

–

Fig.4

2 – 2

Page 19

3. IC protectors replacement

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

The location of ICPs are shown below:

(1) F100 (ICPS10) is installed in order to protect IC’s from an overcurrent

generated in the verification stamp drive circuit. If F100 is open, replace it with a new one.

CNRTH

F100

CNFUSE

CNMT

FO-2950MGR/GH/MY/TH

CNPRT

CNLIUA

CNPN

CNSP

CNCIS

4. Settings (1) Dial mode selector

OPTION SETTING: DIAL MODE (Soft Switch No. SW2 DATA No. 1) Use this to set the fax machine to the type of telephone line you are on.

• The factory setting is "TONE".

(step 1) Select "OPTION SETTING".

KEY: DISPLAY:

(step 2) Select "DIAL MODE".

KEY:

DISPLAY:

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

KEY:

FUNCTION 4

OPTION SETTING PRESS or #

Push # until " DIAL MODE " is indicated because the number of # s changes by the models.

DIAL MODE 1= TONE, 2= PULSE

IC6

Control PWB (Bottom side)

Fig.5

CNLIUB

DISPLAY: TONE SELECTED KEY:

DISPLAY:

PULSE SELECTED

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

KEY:

STOP

2 – 3

Page 20

FO-2950MGR/GH/MY/TH

[2] Diagnostics and service soft switches

1. Operating procedure

Two kinds of diagnoses are supported.

1-1. Fax diagnosis

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

Entering the diagnostic mode

FUNC

Press display will appear.

DIAG MODE 2950MGR: 2950MGH: 2950MMY:

2950MTH:

ROM:

Then press the and the key or select with the rapid key.

Enter the mode with the (Diag

•

specifications)

FUNC

9 8

FAU0 FBD0 FAS0 FAT0

START

9 8 7

, and

the

key. Select the desired item with the

START

key.

2950MGR:ROM: FAU0 2950MGH:ROM: FBD0 2950MMY:ROM: FAS0 2950MTH:ROM: FAT0

START

following

key

1-2. Print diagnosis

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

Entering the diagnostic mode

FUNC

Press display will appear.

PRINT DIAG MODE PRESS START KEY

Then press the key andthe key or selectwith the rapid key.

Enterthe modewith the key. (Diag•specifications)

FUNC

01 02

9 8

START

9 8 6

START START

START

START04

, and

key. Select the desired item with the

START

PRINT DIAG MODE

START

AREA PRINT MODE CHECK PATTERN 1 CHECK PATTERN 2

CHECK PATTERN 3

the

following

START01 SOFT SWITCH MODE

04 05

07 08

10 11

START START03 START START START06

START START START09

START START

ROM & RAM CHECK AGING MODE PANEL KEY TEST OPTICAL ADJUST MODE

CHECK PATTERN MODE

SIGNAL SEND MODE MEMORY CLEAR MODE AUTO FEEDER MODE

MOTOR AGING MODE TEL. NUMBER SET

Memory clear when power is turned on

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

START05 START06 START07 START

START

START10 START11

MEMORY CLEAR?

PAPER FEED AGING LIFE SET MODE LIFE ALL CLEAR LIFE ENTRY MODE

TOP ADJUST MODE

LIFE CLEAR MODE

MAIN CHARGER ADJUST

YES: START

Press STAR T key, the memory will be cleared to be ready for operation. Press COPY key, the memory will be cleared to be ready for process check.

If press the other keys, it will continue ready for operation as it is.

2 – 4

Page 21

FO-2950MGR/GH/MY/TH

2. Diagnostic items description

2-1. Fax diagnosis

1) Soft switch mode

The soft switches are provided so that each operation mode can be set by using the operation panel. In this mode, these switches can be checked and set. The contents of these switches are backed up.

Soft switch mode screen

S O F T S W I T C H M O D E S W 0 1 = 0 0 0 0 0 0 0 0

Data

Switch number selection

1 2 3 4 5 6 7 :DATA No.

Switch

No.

• Press START key for setting of the next soft switch. If the soft

switch number is the final, pressing START key will exit the soft switch mode.

• Enter two digits of a soft switch number to set the switch number.

S O F T S W I T C H M O D E S W 0 1 = 0 0 0 0 0 0 0 0

Data number selection

S O F T S W I T C H M O D E S W 1

1 6

The cursor position shows the data to be set. Pressing # key moves the cursor to the right. If, however, the cursor

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

Pressing key moves the cursor to the left. If, however, the cursor is

on data number 1, pressing key shifts the cursor to data number 1 of the former switch number. If the switch number is 1, pressing key will not move the cursor and the error buzzer will sound.

Data setting method

Press the FUNCTION key, and the data at the position of the cursor

will be reversed to 0 when it is 1, or to 1 when it is 0. (If the soft switch can not be changed at the bit the error buzzer will sound with the process not received.), When you press the STAR T key or the # key and the cursor moves to the next switch position, the changes in the contents of the previous switch position will be saved. If you do not want to save your changes, press the STOP key.

Outputting method of soft switch list

In the soft switch mode, press the COPY/HELP key, and the soft

switch list will be output.

If the recording paper runs out or is clogged, condition is held until

recording paper is prepared, and an error buzzer doesn’t ring.

Prohibition against changing individual pieces of data and synchro-

nized data changes

At present, there is no prohibition against changing data individually

and there is also no capability to make synchronized changes to data. (The ECM may be turned on or off while using image memory.)

2) ROM & RAM check

ROM executes the sum check, and RAM executes the matching test. If any error occurs, the buzzer will inform it. (Refer to the following table). Finally, the result will be printed.

Number of buzzer sounds Device checked 1 time <Short sound> MAIN ROM 2 times <Short sounds> S-RAM 3 times <Short sounds> D-RAM 4 times <Short sounds> CPU integrated ROM/RAM

The buzzer beep pattern is: on for 0.25 seconds and then off for 0.25 seconds.

S O F T S W I T C H M O D E S W 1 6 = 0 0 0 1 0 1 1 0

4) Panel key test

This is used to check whether each key is normally operated or not. According to the key input, LCD is displayed.

1) When the START key is pressed while PANEL KEY TEST is being displayed, a test will start. Since all of the LEDs will light up in sequence until the test is finished, the LED operation can be checked as well.

2) Press all of the keys one at a time, but do not press the STOP key. Every time a key is pressed, the name of that key will appear in the display.

3) Finally, press the ST OP key. If there was a key you pressed that was not detected when the STOP key is pressed, PANEL TEST NG! will be displayed. When all of the keys have been pressed and detected, PANEL TEST OK! will be displayed. Then the display will go blank, which is OK. If there was an NG, any key which was not pressed or not detected will be printed in the result table. (For details about the printout format, see the list function specifications.)

5) Optical adjust mode

In this mode, the optical system is adjusted. Document feeding can be started by pressing the STAR T key two times. It can be stopped by pressing the STOP key.

6) Check pattern mode

The effective printing area used will be according to the size specified. A copy of a pattern will be printed, and the printing will be complete.

7) 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.

[ 1] No signals (CML-ON) [ 2] 14400bps (V. 33) [ 3] 12000bps (V. 33) [ 4] 14400bps (V. 17) [ 5] 12000bps (V. 17) [ 6] 9600bps (V. 17) [ 7] 7200bps (V. 17) [ 8] 9600bps (V. 29) [ 9] 7200bps (V. 29) [10] 4800bps (V27ter) [11] 2400bps (V27ter) [12] 300bps (FLAG) [13] 2100Hz (CED) [14] 1100Hz (CNG) [15] PSEUDO RINGER

3) Aging mode

If any document is set up in the first state (when started), copying will be executed. If it is not set up, "check pattern" of the print diagnosis is output at the intervals of 1 sheet/5 minutes. (A total of 10 sheets are output.)

2 – 5

Page 22

FO-2950MGR/GH/MY/TH

8) Memory clear mode

This mode is used to clear the backup memory and to reset to the factory default setting. The content of each setting will be cleared. Then, the initialized list be output.

9) Auto feeder mode

The auto feed function can be checked by inserting and discharging the document. (After entering this mode, when a document is placed in the machine and the START key is pressed, the operation will start.)

After this mode is activated, the document size A4(A4 ) and sensor information A4(A4 ORG) are displayed when the document sensor is turned.

AUTO FEEDER MODE ( )

After setup of the document

AUTO FEEDER MODE A4 (A4 ORG)

Only the sensor which is activated (fallen down) is displayed.) The paper sheet size (A4) is displayed.

10) Motor aging mode

Regardless of the presence or absence of a document, the transmission system motor will continue to run until the STOP key is pressed. When the STAR T key is pressed after this mode has been selected, the motor will run at the STANDARD mode speed. Then, when the image quality is changed using the RESOLUTION key, the motor will run at the speed used for that image quality. (When HALF-TONE is selected, the motor will run at the FINE modespeed.)

2-2. Print diagnosis

Rapid key 01: Area print mode

The effective printing area frame is printed in the specified sheet size.

1 2 3 4 5 6 7 8

4mm

201mm

1. [Full black pattern]

2. [Intermediate tone 2 pattern]

3. [Intermediate tone 1 pattern]

4mm

The left pattern is repeated.

11) TEL. number set

The function is used to simplify the registration of FAX/TEL No. during aging.

The diagnosis mode is activated. If anything is not registered in the Rapid number 01 or any program or group is registered, it will pass the diagnosis without doing anything.

The FAX number (including the substitutive destination) of the Rapid number 01 is copied to the Rapid numbers 02 thru 19.

FAX number of the Rapid number 01 is copied to SPEED key numbers 00 thru 99.

If any chain dial is not set in the Rapid number 01, the Rapid numbers 01 thru 19 and SPEED key numbers 00 thru 10 are registered in the group number 04. If any chain dial is set, the group will be not produced but the chain dial setting alone of the Rapid number 01 will be reset. (In all others except the Rapid number 01, the chain dials will be continuously set as they are.)

Rapid key SPEED key

(12th and subsequential letters of the destination name registered in the Rapid number 01 will be discarded.)

RXX SXX

XXXX: Rapid number

: Speed key number

4. [Mesh point pattern] The left pattern is repeated.

5. [Longitudinal strip 2 pattern]

Black 2 dot and white 2 dot are repeated in line.

6. [Lateral strip 2 pattern]

Black 2 line and white 2 line are repeated.

7. [Lateral strip 1 pattern]

Black 1 line and white 1 line are repeated.

8. [Full White pattern]

Rapid key 02: Check pattern 1

The lateral stripe 2 pattern is printed on one sheet. (Black 2 line and white 2 line are repeated.)

Rapid key 03: Check pattern 2

The lateral stripe 2 pattern is printed on multiple pages. Press the STOP key to end the printing.

Rapid key 04: Check pattern 3

The intermediate tone 1 is printed on one sheet.

2 – 6

Page 23

FO-2950MGR/GH/MY/TH

LI FE1= 00123

LI FE2= 00123

LI FE3= 00123

# key

key

Rapid key 05: Paper feed aging

The mode is used for aging related to the printing. In this mode, the following modes are provided.

Blank paper aging mode (ALL WHITE AGING)

Whole black print aging mode (ALL BLACK AGING)

4% printing aging mode (4% AGING) After selecting the paper-feed aging mode in the print diagnosis mode, input the number of each mode above with the ten-key, and the mode will be executed. The detailed specifications of each mode are described as follows. Here, the operation in each mode is stopped only when the STOP key is pressed by the operator or a printing-impossible error occurs.

• Blank paper aging mode (ALL WHITE AGING)

In the mode, printing is continued in the whole white (white paper) printing pattern until the STOP key is pressed by the operator . (In the printing area)

• Whole black printing aging mode (ALL BLACK AGING)

In the mode, printing is continued in the whole black (whole black) printing pattern until the STOP key is pressed by the operator . (In the printing area)

Rapid key 06: Life set mode

The mode is used to set the life counter of the printer and the counter of the auto feeder at desired values. For setting, proceed with the following procedure.

When the life counter setting mode is selected, the following will be is displayed.

MACHINE

= 00123

Rapid key 07: Life all clear

The mode is used to clear the life counter of the printer of the counter of the auto feeder.

Note: The counter shows the operational state of the printer (e.g. how

many sheets have been printed since start of use?). The ordinary memory does not reset the counter. Accordingly, it is necessary to reset this counter in addition to the ordinary memory clear if the content in the memory on the control PWB is broken because of PWB repair, etc. (In the production stage, it is necessary to execute this in the last process.)

Rapid key 08: Life entry mode (For Serviceman temporary counter)

The mode is used to set a desired value for the judgment value (alarm judgment counter value) of the general purpose life counters 1 thru 3 of the printer. If the life of a consumable part (developer, imprinter, etc) is set, the model which has the error display and RMS function will inform RMS when the counter reaches the set value. For setting, proceed with the following procedure.

When the life counter entry mode is selected, the following will be displayed.

IFE1

LIFE2

LLIFFE3

= 00123

key

DRUMLLIFE

# key

FEEDER = 00123

OT NER = 001230

The cursor blinks at the top data. Seven counters can be selected with the "#" and " " keys.

In the state 1, input a desired setting number of 6 digits with the tenkey.

After input of 6 digits, shift to another counter with the "#" and " " keys as necessary. When all necessary counters are completely input, press the START key.

"STORED" will be displayed with the set values stored into the

memory. For checking, retry this mode. Note: This counter indicates the printer use conditions such as numbers of printed pages from the beginning of use. In the normal memory clear condition, the counter will not be reset. In conditions including damaged memory contents caused by repairing the panel, this counter should be reset or cleared in addition to the ordinary memory clear.

The cursor blinks at the top data. Three counters can be selected with the "#" and " " keys.

In the state 1 , input a desired setting number of 6 digits with the ten-key.

After input of 6 digits, shift to another counter with the "#" and " " keys as necessary. When all necessary counters are completely input, press the START key.

"STORED" will be displayed with the set values stored into the memory. For checking, retry this mode.

Note: The counter shows the operational state of the printer (how many

sheets have been printed since start of use? and others). The ordinary memory does not reset the counter. Accordingly, it is necessary to reset the counter or do the clear process in addition to the ordinary memory clear if the content in the memory on the control PWB is broken because of PWB repair, etc. (In the production stage, it is necessary to execute this in the last process.)

Rapid key 9: Top adjust mode

Adjust the top margin for printing on a page. You can enter any value from 0 to 99 using the ten-key keypad. The standard (initial) value is 50. When the setting is increased, the print start position will be moved closer to the beginning of page. When the setting is decreased, the print start position will be moved further away from the beginning of page.

2 – 7

Page 24

FO-2950MGR/GH/MY/TH

Rapid key 10: Life clear mode

The mode is used to respectively clear the life counter of the printer and the counter of the auto feeder. For setting, proceed with the following procedure.

When the life counter clearing mode is selected, the following will be is displayed. Seven counters can be selected with the "#" and " " keys.

LEAR

MACHINE

DRUM

# key

FEEDER LF LEAR

TONER L I FE LEAR

In the state of 1, select the counter value you want to clear using the

LIFE

IFE1

LIFE2

LIFE3

LEAR

key

"#" key or the " " key, and then press the START key.

"CLEARED " will be displayed, and the counter value will be cleared. After clearing the counter value, another counter value can be cleared using the # or key, if desired. Press the STOP key to exit from the mode.

Note: The counter shows the operational state of the printer (how many

Rapid key 11: Main charger adjust

This mode is used to control voltage of main charger.

2 – 8

Page 25

3. How to make soft switch setting

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

FO-2950MGR/GH/MY/TH

Press

FUNCTION

9 8 7 START START

S W 01 = 0 0 0 0 0 0 0 0

S W 01 = 1 0 0 0 0 0 0 0 S W 01 = 1 0 0 0 0 0 0 0 S W 01 = 1 0 0 0 0 0 0 0 S W 01 = 1 0 0 0 0 0 0 0

S W 02 = 0 0 0 0 0 0 0 0

S W 53 = 0 0 0 0 0 0 0 0

Press FUNCTION key.

Press key.

Bit1 - 8 are set.

Press key during setting.

START

Soft SW02 - 53 are set.

To finish the settings halfway between SW01 and SW53, 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 Nos. remain in effect.

The soft switch mode is terminated.

2 – 9

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FO-2950MGR/GH/MY/TH

4. Soft switch description

• Soft switch

DATA

NO.

1 Recall interval Binary input 8421 0 0 0 0 OPTION 2 No. = 1234 1 1 1 1 3 0101 4 1111

SW1

5 Recall times Binary input 8421 0 0 0 0 OPTION 6 No. = 5678 0 0 0 0 7 0010(Twice) 1 1 1 1 8 0000 1 Dial mode Pulse Tone 0 0 0 0 OPTION 2 Reserved 1111 3 ECM mode No Yes 0 0 0 0 OPTION 4 CNG detection in stand-by mode No Yes 0 0 0 0 OPTION

SW2

5 Polling security On Off 0 0 0 0 6 Automatic cover sheet No Yes 1 1 1 1 OPTION 7

Junk fax function in manual reception 8 Anti junk fax function Yes No 0 0 0 0 OPTION 1 Number of rings for auto receive Binary input 8421 0 0 0 0 OPTION 2 No. = 1234 0 0 0 0 (0~9) 3 0001(1 time) 0 0 0 0 4 1111

SW3

5 Automatic switching manual Binary input 8421 0 0 0 0 6 to auto receive mode No. = 5678 0 0 0 0 7 (0: OFF) 0000(Off) 0 0 0 0 8 0000

Communication results printout Error 1 (Transaction report) No. 1 0 0 0 1 1 0 0 0 0 2 No. 2 0 0 1 0 1 0 0 0 0 3 No. 3 1 0 0 0 0 1 1 1 1 4

Delay timer before line connect in auto dial

SW4 Delay timer of after line connect 3.6 sec 3.0 sec 1.7 sec 3.0 sec

5 in auto dial No. 5 1 1 0 0 1 1 1 1 6 No. 6 1 0 1 0 0 0 0 0

Number of CNG detect 1 pulse 2 pulses 3pulses 4 pulses 7 (Stand-by mode) No. 7 0 0 1 1 0 0 0 0 8 No. 8 0 1 0 1 1 1 1 1 1 Reserved 1111 2 Date format Month-Day-Year Day-Month-Year 0 0 0 0 3 Sender’s information transmit Off On 0 0 0 0 4 Footer print On Off 0 0 0 0

SW5

5 Reserved 0000 6 Substitute reception Off On 0 0 0 0 7 Substitute reception conditions 8 CSI transmission Off On 0 0 0 0

ITEM

Yes No 0000

3 sec 0 sec 1 1 1 1

Reception disable without TSI

Switch setting and function

(5 x 60 sec = 5 min)

Err/Tmr/Mem

Send only

No print

Reception enable without TSI

Always OPTION

GR GH MY TH

0000

Initial setting

Remarks

FUNC +3

2 – 10

Page 27

FO-2950MGR/GH/MY/TH

DA TA

NO.

1 H2 mode No Yes 0 0 0 0 2 MH fixed Yes No 3 Reserved 0000 4 Reserved 0000

SW6 Modem speed V.17 V. 29 V. 27ter

(DCS data reception speed) 5 No. 5 1 1 1 1 0 0 0 0 1 1 1 1 6 No. 6 0 0 0 0 0 0 0 0 0 0 0 0 7 No. 7 0 1 0 1 0 1 1 0 0 0 0 0 8 No. 8 0 0 1 1 1 1 0 0 0 0 0 0

Reception speed fixed NO V. 17- V. 29-

1 No. 1 0 1 0 1 0 0 0 0 2 No. 2 0 1 1 0 0 0 0 0 3

DIS receive acknowledgement during

SW7

SW8 4 Signal transmission level Binary input 16 8 4 2 1 0 0 0 0

SW9 4 Equalizer freeze conditions All 7200bps 0 0 0 0

SW10

G3 transmission 4 Non modulated carrier for V.29 On Off 0 0 0 0

transmission mode 5 EOL detect timer 25 sec 13 sec 0 0 0 0 6 Protocol monitor On Off 0 0 0 0 7 Line monitor On Off 0 0 0 0 8

Length limitation of copy/send/receive

Digital line equalization setting 0Km 1.8Km 3.6Km 7.2Km 1 No. 1 0 0 1 1 0 0 0 0 2 No. 2 0 1 0 1 0 0 0 0 3 Dial pausing (sec/pause) 2sec 4sec 1 1 1 1

5 No. = 45678 1 1 1 0 6 01011 7 00100 8 1110

CED tone signal interval 75ms 500ms 750ms 1000ms 1 No. 1 0 0 1 1 0 0 0 0 2 No. 2 0 1 0 1 0 0 0 0 3 Equalizer freeze control (MODEM) On Off 0 0 0 0

5 CED detection time 500ms 1000ms 0 0 0 0 6 Reserved 0000 7 Reserved 0000 8 Reserved 0000 1 Reserved 0000 2 Reserved 0000

CI off detection timer 1200ms 1000ms 700ms 350ms 3 (Distinctive ring setting off only) No. 3 0 1 0 1 0 0 0 0 4 No. 4 0 0 1 1 1 1 1 1 5 Reserved 0000 6 Reserved 0000 7 Reserved 0000 8 Reserved 0000

ITEM

Twice 0 0 0 0 0

No limit

Switch setting and function

14400 12000 9600 7200 9600 7200 4800 2400

14400BPS 9600BPS 4800BPS

Copy/Send:1m Receive:1.5m

(depends on remote machine)

V. 27ter-

(–11 dBm)(GR/GH/MY) (–4 dBm)(TH)

GR GH MY TH

0000

0001 1110

Initial setting

Remarks

When

14400bps

modem used,

setting to

14400bps is

ignored.

2 – 11

Page 28

FO-2950MGR/GH/MY/TH

DATA

NO.

End buzzer 3sec 1sec 1 No. 1 0 0 1 1 0 0 0 0 2 No. 2 0 1 0 1 0 0 0 0 3 Communication error treatment

SW11

SW12

SW13

SW14

SW15

in RTN sending mode (Reception) 4 CNG transmission after auto dialing No Yes 0 0 0 0 5 Error criterion 10 ~ 20 % 5 ~ 10 % 0 0 0 0 6 Pulse to tone change by key On Off 1 1 1 1 7

CNG transmission in manual transmission 8 Reserved 0000 1

DTMF signal transmission level (Low) 2 No. = 12345 0 0 0 1 3 10000 4 10100 5 01001 6 Reserved 0000 7 Reserved 0000 8 Reserved 0000 1

DTMF signal transmission level (High) 2 No. = 12345 1 0 0 0 3 01100 4 10000 5 00101 6 Reserved 0000 7 Reserved 0000 8 Reserved 0000 1 Reserved 0000 2 Reserved 0000 3 Reserved 0000 4 Reserved 1111 5 Reserved 1111 6 Reserved 0000 7 Reserved 0000 8 Reserved 0000 1 Reserved 0000 2 Reserved 0000 3 Dial pulse make/break ratio 40/60 33/67 1 0 0 1 4 Reserved 0000 5 Reserved 0000 6 Reserved 0000 7 Reserved 0000 8 Reserved 0000

ITEM

No communication error Communication error

No Yes 0000

Binary input 16 8421 1 1 1 0

Binary input 16 8421 0 1 1 0

Switch setting and function

No Beep No Beep

(–8.0dBm)(GR) (–10dBm)(GH/MY) (–4.5dBm)(TH)

(–6dBm)(GR) (–8dBm)(GH/MY) (–4.5dBm)(TH)

GR GH MY TH

0000

0110 0000 0001

1001 0000 0001

Initial setting

Remarks

OPTION

2 – 12

Page 29

FO-2950MGR/GH/MY/TH

DATA

NO.

1 Reserved 1111 2 Reserved 0000 3 Reserved 0000 4 Reserved 0000

SW16

5 Reserved 1111 6 Reserved 0000 7 Reserved 0000 8 Reserved 0000

Speaker volume (3 stages) High High Middle Low Using 1 No. 1 0 0 1 1 1 1 1 1 Volume 2 No. 2 0 1 0 1 0 0 0 0 key 3 Reserved 1111 4 Reserved 0000

SW17

SW18

SW19

SW20

Ringer volume (4 stages) Off High Middle Low Using 5 No. 5 0 0 1 1 1 1 1 1 Volume 6 No. 6 0 1 0 1 0 0 0 0 key

Key volume Off High Low Low 7 No. 7 0 0 1 1 1 1 1 1 8 No. 8 0 1 0 1 0 0 0 0 1 Reserved 1111 2 Auto reception in PC I/F mode FAX PC 1 1 1 1 3 Reserved 1111 4 Sender’s phone number setting Cannot change Change allowed 0 0 0 0 5 Polling key Yes No 0 0 0 0 OPTION 6 Activity report print Automatic printout 7

Total communication hours and pages print 8 Line density selection Fine Standard 0 0 0 0 OPTION

Density adjustment Normal Faint Deep Deep

(When Fine/STD mode)

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

Density adjustment Normal Faint Deep Deep

(When Half-tone mode)

3 No. 3 0 0 1 1 0 0 0 0 4 No. 4 0 1 0 1 0 0 0 0 5 Reserved 0000 6 Reserved 0000 7 Reserved 1111 8 Reserved 0000 1 Reserved 0000 2 Reserved 0000 3 Reserved 0000 4 Reserved 0000 5 Reserved 0000 6 Reserved 0000 7 F.A.S.T (RMS) mode On Off 0 0 0 0 8 Quick on-line Yes No 1 1 1 1 OPTION

ITEM

Off On 0000

Switch setting and function

No printout when memory full

(when Dark

mode)

(when Dark

mode)

GR GH MY TH

0 0 0 0 OPTION

Initial setting

Remarks

FUNC + #

2 – 13

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FO-2950MGR/GH/MY/TH

DA TA

NO.

1 Reserved 0000 2 Reserved 0000 3 Reserved 1111 4 Reserved 0000

SW21

5 Reserved 0000 6 Reserved 0000 7 Reserved 0000 8 Reserved 0000 1 Reserved 0000 2 Reserved 0000 3 Reserved 0000 4 Reserved 0000

SW22

5 Reserved 0000 6 Reserved 0000 7 Reserved 0000 8 Reserved 0000 1 Automatic reduce of receive Auto 100% 1 1 1 1 OPTION 2 Cut off mode (COPY mode) Continue Cut-off 0 0 0 0 OPTION

Paper set size Letter Legal A4 Letter OPTION

3 No. 3 0 0 1 1 1 1 1 1 (Only for

SW23

4 No. 4 0 1 0 1 0 0 0 0 GR/GH) 5 Reserved 0000 6 Reserved 0000 7 Reserved 0000 8 Reserved 0000

DTMF detection time 50ms 80ms 100ms 120ms 1 No. 1 0 0 1 1 0 0 0 0 2 No. 2 0 1 0 1 0 0 0 0 3

Protection of remote reception (5 ) detect

SW24

4 Reserved 0000 5

Remote operation code figures by external 6 tel (0 ~ 9) No. = 5678(Data No.) 1 1 1 1 7 EX 0101 0 0 0 0 8 eg. 5 1111 1

Busy tone detection ON/OFF time (Shorter duration)

Busy tone detection ON/OFF time 650ms 900ms 2700ms 900ms 2 (Longer duration) No. 2 0 0 1 1 0 0 0 0 3 No. 3 0 1 0 1 1 1 1 1 4

SW25

SW26

Busy tone continuous sound detect time 5

Busy tone detect continuation sound detect 6

Busy tone detect intermittent sound detect

Busy tone detection pulse number 2pulses 4pulses 6pulses 10pulses 7 No. 7 0 0 1 1 0 0 0 0 8 No. 8 0 1 0 1 1 1 1 1 1 TAD connect Yes No 0 0 0 0 2 Fax switching when A.M. full Yes No 0 0 0 0 OPTION

Selection time of quiet detection 30sec 40sec 50sec 60sec 3 No. 3 0 0 1 1 0 0 0 0 4 No. 4 0 1 0 1 1 1 1 1

Number of CNG detect (AM mode) 1pulse 2pulses 3pulses 4pulses 5 No. 5 0 0 1 1 0 0 0 0 6 No. 6 0 1 0 1 1 1 1 1

OGM detect timer 7 No. 7 0 0 1 1 0 0 0 0 8 No. 8 0 1 0 1 1 1 1 1

ITEM

Yes No 0 0 0 0 OPTION

Binary input 8421 0 0 0 0 OPTION

350ms 150ms 0 0 0 0

5sec 10sec 1 1 1 1 No Yes 0000 No Yes 0000

Switch setting and function

Not work

100ms 200ms 300ms

GR GH MY TH

Initial setting

Remarks

Recep key

2 – 14

Page 31

FO-2950MGR/GH/MY/TH

DATA

NO.

1 Quiet detect time Binary input 8421 0 0 0 0 OPTION 2 No. = 1234 1 1 1 1 3 0100(4sec) 0 0 0 0 4 0000

SW27

5 Quiet detect start timing Binary input 8421 0 0 0 0 6 No. = 5678 1 1 1 1 7 0101(5sec) 0 0 0 0 8 1111 1 Reserved 0000 2 Reserved 0000 3 Reserved 0000 4 Reserved 0000

SW28

5 Reserved 0000 6 Reserved 0000 7 Reserved 0000 8 Reserved 0000 1 Automatic switching mode Tel/Fax auto switch Switch to fax 0 0 0 0

Pseudo ringing time at the TEL/FAX 15sec 30sec 60sec 120sec OPTION 2 automatic switching mode No. 2 0 0 1 1 0 0 0 0 3 No. 3 0 1 0 1 0 0 0 0 4 Number of CNG signal detection Twice Once

SW29

SW30

SW31

at the TEL/FAX automatic switching mode 5 CNG detect time at TEL/FAX mode 3sec 5sec 0 0 0 0 6 Reserved 0000 7 Reserved 0000 8 Reserved 0000 1 Pseudo ringer sound output level Binary input 8421 1 1 1 1 2 to the line No. = 1234 0 0 0 0 3 1010 4 0000 5 Reserved 0000 6 Reserved 0000 7 Reserved 0000 8 Reserved 0000 1 Reserved 0000 2 Reserved 0000 3 Reserved 0000 4 Reserved 0000 5 Reserved 0000 6 Reserved 0000 7 Reserved 0000 8 Reserved 0000

ITEM

Switch setting and function

(–10dBm)

GR GH MY TH

1111

Initial setting

Remarks

Recep key

2 – 15

Page 32

FO-2950MGR/GH/MY/TH

DATA

NO.

1 Reserved 0000 2 Reserved 0000 3 Reserved 0000 4 Reserved 0000

SW32

5 Reserved 0000 6 Reserved 0000 7 Reserved 0000 8 Reserved 0000 1 Reserved 0000 2 Reserved 1111 3 Reserved 0000 4 Reserved 0000

SW33

5 Reserved 0000 6 Reserved 0000 7 Reserved 0000 8 Reserved 0000 1 Reserved 0000 2 Reserved 0000 3 Reserved 0000 4 Reserved 0000

SW34

5 Reserved 1111 6 Reserved 1111 7 Reserved 0000 8 Reserved 1111 1 Reserved 1111 2 Reserved 1111 3 Reserved 0000 4 Reserved 1111

SW35

5 Reserved 1111 6 Reserved 1111 7 Reserved 0000 8 Reserved 1111 1 Reserved 1111 2 Reserved 1111 3 Reserved 1111 4 Reserved 1111

SW36

5 Reserved 1111 6 Reserved 1111 7 Reserved 0000 8 Reserved 0000 1 Reserved 0000 2 Reserved 0000 3 Reserved 0000 4 Reserved 0000

SW37

5 Reserved 0000 6 Reserved 0000 7 Reserved 0000 8 Reserved 0000 1 Reserved 0000 2 Reserved 0000 3 Reserved 0000 4 Reserved 0000

SW38

5 Reserved 0000 6 Reserved 0000 7 Reserved 0000 8 Reserved 0000

ITEM

Switch setting and function

GR GH MY TH

Initial setting

Remarks

2 – 16

Page 33

FO-2950MGR/GH/MY/TH

DATA

NO.

1 Reserved 0000 2 Reserved 0000 3 Reserved 0000 4 Reserved 0000

SW39

5 Reserved 0000 6 Reserved 0000 7 Reserved 0000 8 Reserved 0000 1 Reserved 0000 2 Reserved 0000 3 Reserved 0000 4 Reserved 0000

SW40

5 Reserved 0000 6 Reserved 0000 7 Reserved 0000 8 Reserved 0000 1 Reserved 0000 2 Reserved 0000 3 Reserved 0000 4 Reserved 0000

SW41

5 Reserved 0000 6 Reserved 0000 7 Reserved 0000 8 Reserved 0000 1 Reserved 0000 2 Reserved 0000 3 Reserved 0000 4 Reserved 0000

SW42

5 Reserved 0000 6 Reserved 0000 7 Reserved 0000 8 Reserved 0000 1 Reserved 0000 2 Reserved 0000 3 Reserved 0000 4 Reserved 0000

SW43

5 Reserved 0000 6 Reserved 0000 7 Reserved 0000 8 Reserved 0000 1 Reserved 0000 2 Reserved 0000 3 Reserved 0000 4 Reserved 0000

SW44

5 Reserved 0000 6 Reserved 0000 7 Reserved 0000 8 Reserved 0000

ITEM

Switch setting and function

GR GH MY TH

Initial setting

Remarks

2 – 17

Page 34

FO-2950MGR/GH/MY/TH

DATA

NO.

1 Reserved 0000 2 Reserved 0000 3 Reserved 0000 4 Reserved 0000

SW45

5 Reserved 0000 6 Reserved 0000 7 Reserved 0000 8 Reserved 0000 1 Reserved 0000 2 Reserved 0000 3 Reserved 0000 4 Reserved 0000

SW46

5 Reserved 0000 6 Reserved 0000 7 Reserved 0000 8 Reserved 0000 1 Reserved 0000 2 Reserved 0000 3 Reserved 0000 4 Reserved 0000

SW47

5 Reserved 0000 6 Reserved 0000 7 Reserved 0000 8 Reserved 0000 1 Reserved 0000 2 Reserved 0000 3 Reserved 0000 4 Reserved 0000

SW48

5 Reserved 0000 6 Reserved 0000 7 Reserved 0000 8 Reserved 0000 1 Reserved 0000 2 Reserved 1111 3 Reserved 0000 4 Reserved 1111

SW49

5 Reserved 0000 6 Reserved 0000 7 Reserved 0000 8 Reserved 0000 1 Reserved 0000 2 Reserved 0000 3 Reserved 0000 4 Reserved 0000

SW50

5 Reserved 0000 6 Reserved 0000 7 Reserved 0000 8 Reserved 0000

ITEM

Switch setting and function

GR GH MY TH

Initial setting

Remarks

2 – 18

Page 35

FO-2950MGR/GH/MY/TH

DATA

NO.

1 Reserved 0000 2 Reserved 0000 3 Reserved 0000 4 Reserved 0000

SW51

5 Reserved 0000 6 Reserved 0000 7 Reserved 0000 8 Reserved 0000 1 Reserved 0000 2 Reserved 0000 3 Reserved 0000 4 Reserved 1111

SW52

5 Reserved 1111 6 Reserved 0000 7 Reserved 1111 8 Reserved 0000 1 Reserved 0000 2 Reserved 0000 3 Reserved 1111 4 Reserved 0000

SW53

5 Reserved 0000 6 Reserved 0000 7 Reserved 1111 8 Reserved 1111

ITEM

Switch setting and function

GR GH MY TH

Initial setting

Remarks

2 – 19

Page 36

FO-2950MGR/GH/MY/TH

• Soft switch function description

SW1 No. 1 ~ No. 4 Recall interval

Choice is made for a recall interval for speed, rapid dial numbers, ten key +START and search + START. Use a binary number to program this. If set to 0 accidentally, 1 will be assumed.

SW1 No. 5 ~ No. 8 Recall times

Choice is made as to how many recall times should be made. Use a binary number to program this.

SW2 No. 1 Dial mode

Switch the type according to the telephone circuit connected to the facsimile.

0: TONE DIAL 1: PULSE DIAL

SW2 No. 2 Reserved

Set to "1".

SW2 No. 3 ECM mode

Used to determine ECM mode function. Refer to the following table.

SW2- No. 3 ECM mode 0 0 0 0 0 00011111111 SW6- No. 2 MH fixed 0 1 0 1 0 10101010101 Compression method ECM MMR mode Yes No Yes No No No No No No No No No No No No No

ECM MR mode Yes No Yes No Yes No Yes No No No No No No No No No ECM MMH mode Yes Yes No No Yes Yes No No No No No No No No No No ECM MH mode Yes Yes Yes Yes Yes Yes Yes Yes No No No No No No No No MR mode Yes No Yes No Yes No Yes No Yes No Yes No Yes No Yes No MH mode Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

(Depending on remote machine)

SW2 No. 4 CNG detection in stand-by mode

The CNG signal detection function during stand-by stops.

0: Yes 1: No

SW2 No. 5 Polling security

This switch is employed to enable or disable the polling operation using the ID code verification function, in order to prevent unauthorized polling operation.

SW2 No. 6 Automatic cover sheet

When "0" (=YES) is selected, the cover sheet is automatically sent after transmission of the original to notify the receiver of the number of original sheets transmitted.

SW2 No. 7 Junk fax function in manual reception

It is set whether JUNK-FAX is functioned in the manual receiving mode or not.

SW2 No. 8 Anti junk fax function

This function is used to receive data from a specific remote machine (station registered in entry mode). It is the function that refused a reception in the case that TSI of remote machine matched with fax number of the station registered.

0: No 1: Yes

SW3 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 nine rings using a binary number. If the soft switch was set to 1, a direct connection is made to the facsimile. If it was set to 0 accidentally, receive ring is set to 1. If it was above 9, receive rings are set to 9.

SW3 No. 5 ~ No. 8 Automatic switching manual to auto receive mode (0: OFF)

This setting allows machine to switch from manual to Auto Receive mode. Setting this number to 0 forces machine to stay in Manual receive mode. Entering the binary number 0 forces the machine to remain in the manual answer mode. If a number between 1 and 9 is entered, the machine will go into the answer mode after the given number of rings. However, it can be used as an ordinary telephone if the handset is taken off the hook before this programmed number is finished. If entry of a number above 9 by accident, it will be set to 9. In this case, it must be corrected to the proper number.

SW4 No. 1 ~ No. 3 Communication results 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.1 : 1 No.2 : 1 No.3 : 0 are set, printing is always on (printed ever if it is normally ended).

000 : Error, timer and memory sending/receiving 010 : Sending 110 : Continuous printing 100 : Not printed 001 : Communication error

SW4 No. 4 Delay timer before line connect in auto dial

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

SW4 No. 5, No. 6 Delay timer of after line connect in auto dial

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

SW4 No. 7, No. 8 Number of CNG detect (Stand-by mode)

Used for detection of CNG in 1 to 4 pulses.

SW5 No. 1 Reserved

Set to "1".

2 – 20

Page 37

FO-2950MGR/GH/MY/TH

SW5 No. 2 Date format

Used to select date display/print formats.

0: DAY-Month-Year 1: Month-DAY-Year

SW5 No. 3 Sender’s information transmit

When it is set at 0, sender’s name, sending page number and so on are automatically printed in the recording paper on the receiving side during transmission. Thus, the sender can be known on the receiving side.

0: Applied 1: Not applied

SW5 No. 4 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.

SW5 No. 5 Reserved

Set to "0".

SW5 No. 6 Substitute reception

Selection of substitute reception in the case of recording paper exhausted or paper jam. If set to "NO", auto receive is disabled even when the receive memory is ready to receive.

Substitute reception is not performed even during receive operation.

SW5 No. 7 Substitute reception conditions

Selection of substitute reception according to existence of TEL number from transmitting side. Initial setting allows substitute reception without CSI. If set to "no", the receiver cannot receive any documents

SW5 No. 8 CSI transmission

CSI signal contains the sender’s phone number registered in the machine. If this switch is set to "1", no sender’s name will be printed at the receiving side.

SW6 No. 1 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.

SW6 No. 2 MH fixed

Normally set to allow automatic selection of MH and MR mode according to the remote side. If set to 1, the mode is fixed to MH and is useful if the remote side is a MH only unit ; or a lot of image distortion is met due to a bad line.

SW6 No. 3, No. 4 Reserved

Set to "0".

SW6 No. 5 ~ No. 8 Modem speed (DCS data reception speed)

Used to determine the initial modem speed. The default is 14400BPS(V.17). 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 the fallback procedure.

SW7 No. 1, No. 2 Reception speed fixed

The transferable speed of modem in the receiving mode is set.

SW7 No. 3 DIS receive acknowledgement during G3 transmission

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

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

SW7 No. 4 Non modulated carrier for V.29 transmission mode

Though transmission of a non-modulated carrier is not required for transmission by the V29 modem according to the CCITT Recommendation, it may be permitted to send a 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.

SW7 No. 5 EOL detect timer

25 seconds or 13 seconds are selected for the detection timer of EOL (end of line). This is effective against communication trouble on a specific type of long EOL.

0: 13 seconds 1: 25 seconds

SW7 No. 6 Protocol monitor

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

When communication FSK data transmission or reception is made, the data is taken into buffer. When communication is finished, the data analyzed and printed out. When data is received with the line monitor (SW7-No.7) set to "1" the reception level is also printed out.

SW7 No. 7 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.

SW7 No. 8 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 1m

for copy or transmit, and 1.5 meters for receive. It is possible to set it to "No limit" to transmit/receive a long document,

such as a computer print form, etc. (In this case, the receiver/transmitter must also be set to no limit.)

SW8 No. 1, No. 2 Digital line equalization setting

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.

SW8 No. 3 Dial pausing (sec/pause)

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

SW8 No. 4 ~ No. 8 Signal transmission level

Used to control the signal transmission level in the range of –0dB to –31dB.

SW9 No. 1, No. 2 CED tone signal interval

For international communication, the 2100Hz CED tone may act as an echo suppresser switch, causing a communication problem. Though this soft switch is normally set to "00", it should be change the time between CED tone and DIS signal from 75ms to 1000ms to eliminate the communication problem caused by echo.

SW9 No. 3 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.

SW9 No. 4 Equalizer freeze conditions

Setting which specifies SW9 No.3 control only in condition of 7200bps modem speed.

SW9 No. 5 CED detection time

The detection time of the CED signal from the called side in the auto calling mode is set.

SW9 No. 6 ~ No. 8 Reserved

Set to "0".

SW10 No. 1, No. 2 Reserved

Set to "0".

2 – 21

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FO-2950MGR/GH/MY/TH

SW10 No. 3, No. 4 CI off detection timer (Distinctive ring setting off only)

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

(Example)

A B

400msec

2000msec

01 : 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.

11: 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.

SW10 No. 5 ~ No. 8 Reserved

Set to "0".

SW11 No. 1, No. 2 End buzzer

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

SW11 No. 3 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.

SW11 No. 4 CNG transmission after auto dialing

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.

SW11 No. 5 Error criterion

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

SW11 No. 6 Pulse to tone change by key

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

SW11 No. 7 CNG transmission in manual transmission

CNG signal sending ON/OFF in case of manual transmission is set.

SW11 No. 8 Reserved

Set to "0".

SW12 No. 1 ~ No. 5 DTMF signal transmission level (Low)

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

00000 : 0 dBm

↓

11111 : –15.5 dBm

SW12 No. 6 ~ No. 8 Reserved

Set to "0".

SW13 No. 1 ~ No. 5 DTMF signal transmission level (High)

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

00000 : 0 dBm

↓

11111 : –15.5 dBm

SW13 No. 6 ~ No. 8 Reserved

Set to "0".

SW14 No. 1 ~ No. 3 Reserved

Set to "0".

SW14 No. 4 , No. 5 Reserved

Set to "1".

SW14 No. 6 ~ No. 8 Reserved

Set to "0".

SW15 No. 1 , No. 2 Reserved

Set to "0".

SW15 No. 3 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".

SW15 No. 4 ~ No. 8 Reserved

Set to "0".

SW16 No. 1 Reserved

Set to "1".

SW16 No. 2 ~ No. 4 Reserved

Set to "0".

SW16 No. 5 Reserved

Set to "1".

SW16 No. 6 ~ No. 8 Reserved

Set to "0".

SW17 No. 1, No. 2 Speaker volume (3 stages)

Used to adjust sound volume from a speaker.

SW17 No. 3 Reserved

Set to "1".

SW17 No. 4 Reserved

Set to "0".

SW17 No. 5, No. 6 Ringer volume (4 stages)

Used to adjust ringing volume.

SW17 No. 7, No. 8 Key volume

Key buzzer volume: The sound volume of key inputting buzzer and other buzzers is set.

SW18 No. 1 Reserved

Set to "1".

SW18 No. 2 Auto reception in PC I/F mode

Automatic receiving of I/F mode: Which receives the call is determined.

SW18 No. 3 Reserved

Set to "1".

SW18 No. 4 Sender’s phone number setting

Whether the registered sender’s phone number can be changed or not is selected. If it is set at 1, the phone number of the sender can not be registered or changed. Set 1 in order to prevent careless change of the sender’s phone number.

0: Change allowed 1: Cannot change

SW18 No. 5 Polling key

If this switch is set to 1, the last of Rapid key works as polling key.

2 – 22

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FO-2950MGR/GH/MY/TH

SW18 No. 6 Activity report print

Whether the communication record table is automatically printed or not, it is selected if the number of communication data is excessive. Regardless of the setting of this selection, communication record table can be printed at all times by operating the keys.

FUNCTION + “2” + “#” + “START”

When the communication record table is printed, the memorized content of the data sent and received up to now will be all cleared (erased). If No (non-printing) is set, the oldest data will be erased when the number of memorized items is excessive.

0: No (first data lost when memory is full) 1: YES (when memory is full)

SW18 No. 7 Total communication hours and pages print

Whether the total time of communication and total number of sheets are recorded in the communication record table or not is selected.

0: Recorded. 1: Not recorded.

SW18 No. 8 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.

SW19 No. 1 , No. 2 Density adjustment (When Fine/STD mode)

This is used for density adjustment in fine/standard mode. Adjust the density according to that of frequently used original. Set to “Dark” for darker reading (either in the auto or the dark mode) of light original. Set to “Light” for lighter reading (either in the auto or the dark mode) of dark original. Set to “Dark only in dark mode” for darker reading only in the dark mode.

SW19 No. 3 , No. 4 Density adjustment (When Half-tone mode)

This is used for density adjustment in the half tone. Setting procedures are the same as SW19 No. 1, No. 2.

SW19 No. 5, No. 6 Reserved

Set to "0".

SW19 No. 7 Reserved

Set to "1".

SW19 No. 8 Reserved

Set to "0".

SW20 No. 1 ~ No. 6 Reserved

Set to "0".

SW20 No. 7 F.A.S.T (RMS) mode

Used to determine a function of remote maintenance system (F.A.S.T).

SW20 No. 8 Quick on-line

It is selected whether auto dial call is activated in the memory input mode when one document is completely read or when all pages are completely read.

SW21 No. 1, No. 2 Reserved

Set to "0".

SW21 No. 3 Reserved

Set to "1".

SW21 No. 4 ~ No. 8 Reserved

Set to "0".

SW22 No.1 ~ No. 8 Reserved

Set to "0".

SW23 No. 1 Automatic reduce of receive

If set to 1, it is reduced automatically.

SW23 No. 2 Cut off mode (COPY mode)

When in copy, if the scanned data is out of the range of recording, the operator has one of the choices below using the switch

1: Continue: Data is printed onto the next page with the last 20mm

also printed at the beginning of the next page

0: Cut off. Data scanned out of the limit is cut off (a page is printed.)

SW23 No. 3, No. 4 Paper set size

At present a size of the record paper.

00: LETTER 01: LEGAL 10: A4

SW23 No. 5 ~ No. 8 Reserved

Set to "0".

SW24 No. 1, No. 2 DTMF detection time

Used to set detect time of DTMF (Dual Tone Multi Frequency) used in remote reception (5 ). The longer the detection time is, the error detection is caused by noises.

SW24 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.

SW24 No. 4 Reserved

Set to "0".

SW24 No. 5 ~ No. 8 Remote operation code figures 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.

SW25 No. 1 Busy tone detection ON/OFF time (Shorter duration)

The initial value of detection is set according to electric condition. The set value is changed according to the local switch board. (Erroneous detection of sound is reduced.) Normally the upper limit is set to 900msec. and the lower limit to 150msec. If erroneous detection is caused by sound, etc., adjust the detection range. The lower limit can be set in the range of 350msec to 150msec.

SW25 No. 2, No. 3 Busy tone detection ON/OFF time (Longer duration)

Similarly to SW-25 No.1, the set value can be varied. The upper limit can be set in the range of 650msec to 2700msec.

SW25 No. 4 Busy tone continuous sound detect time

Set detecting time busy tone for 5 seconds or 10 seconds.

SW25 No. 5 Busy tone detect continuation sound detect

Used to select detection of the continuous sound of certain frequency.

SW25 No. 6 Busy tone detect intermittent sound detect

Used to select detection of the intermittent sound of certain frequency.

SW25 No. 7, No. 8 Busy tone detection pulse number

Used to set detection of Busy tone intermittent sounds.

SW26 No. 1 TAD connect

When connecting the answering machine to the extension telephone jack.

SW26 No. 2 Fax switching when A.M. full

If the answering machine’s memory (tape) is full and there is no response, the machine automatically switches to Fax reception.

SW26 No. 3, No. 4 Selection time of quiet detection

The switch which sets the time from the start of detection function to the end of the function.

SW26 No. 5, No. 6 Number of CNG detect (AM mode)

Used for detection of CNG in 1 to 4 pulses.

2 – 23

Page 40

FO-2950MGR/GH/MY/TH

SW26 No. 7, No. 8 OGM detect timer

A.M. mode is working after detecting OGM of answering machine. This is used to change the detection time of OGM or cancel to detect the OGM.

SW27 No. 1 ~ No. 4 Quiet detect time

When an answering machine is connected, if a no sound status is detected for a certain period of time, the machine judges it as a transmission from a facsimile machine and automatically switches to the FAX mode.

SW27 No. 5 ~ No. 8 Quiet detect start timing

Inserts a pause before commencing quit detection.

0000: 0 seconds 1111 : 15 seconds

SW28 No. 1 ~ No. 8 Reserved

Set to "0".

SW29 No. 1 Automatic switching mode

Used to set auto TEL/FAX switching mode or to set the normal fax mode.

SW29 No. 2, No. 3 Pseudo ringing time at the TEL/FAX automatic switching mode

Choice is made as to how long to rumble the dummy ringer on TEL/FAX automatic switching mode.

SW29 No. 4 Number of CNG signal detection at the TEL/FAX automatic switching mode

Used for detection of CNG in one tone or two tones in the TEL/FAX automatic switching mode.

SW29 No. 5 CNG detect time at TEL/FAX mode

The number of times at which CNG signal is detected is set during receiving in the TEL/FAX automatic switch setting mode.

0 : 5 seconds 1 : 3 seconds

SW29 No. 6 ~ No. 8 Reserved

Set to "0".

SW30 No. 1 ~ No. 4 Pseudo ringer sound output level to the line

Used to adjust sound volume of pseudo ringer to the line (ring back tone) generated on selecting TEL/FAX.

SW30 No. 5 ~ No. 8 Reserved

Set to "0".

SW31 No. 1 ~ No. 8 Reserved

Set to "0".

SW32 No. 1 ~ No. 8 Reserved

Set to "0".

SW33 No. 1 Reserved

Set to "0".

SW33 No. 2 Reserved

Set to "1".

SW33 No. 3 ~ No. 8 Reserved

Set to "0".

SW34 No. 1 ~ No. 4 Reserved

Set to "0".

SW34 No. 5, No. 6 Reserved

Set to "1".

SW34 No. 7 Reserved

Set to "0".

SW34 No. 8 Reserved

Set to "1".

SW35 No. 1, No. 2 Reserved

Set to "1".

SW35 No. 3 Reserved

Set to "0".

SW35 No. 4 ~ No. 6 Reserved

Set to "1".

SW35 No. 7 Reserved

Set to "0".

SW35 No. 8 Reserved

Set to "1".

SW36 No. 1 ~ No. 6 Reserved

Set to "1".

SW36 No. 7, No. 8 Reserved

Set to "0".

SW37 No. 1 ~ No. 8 Reserved

Set to "0".

SW38 No. 1 ~ No. 8 Reserved

Set to "0".

SW39 No. 1 ~ No.8 Reserved

Set to "0".

SW40 No. 1 ~ No.8 Reserved

Set to "0".

SW41 No. 1 ~ No.8 Reserved

Set to "0".

SW42 No. 1 ~ No.8 Reserved

Set to "0".

SW43 No. 1 ~ No.8 Reserved

Set to "0".

SW44 No. 1 ~ No.8 Reserved

Set to "0".

SW45 No. 1 ~ No.8 Reserved

Set to "0".

SW46 No. 1 ~ No.8 Reserved

Set to "0".

SW47 No. 1 ~ No.8 Reserved

Set to "0".

SW48 No. 1 ~ No.8 Reserved

Set to "0".

SW49 No. 1 Reserved

Set to "0".

SW49 No. 2 Reserved

Set to "1".

SW49 No. 3 Reserved

Set to "0".

SW49 No. 4 Reserved

Set to "1".

SW49 No. 5 ~ No.8 Reserved

Set to "0".

2 – 24

Page 41

SW50 No. 1 ~ No.8 Reserved

Set to "0".

SW51 No. 1 ~ No.8 Reserved

Set to "0".

SW52 No. 1 ~ No.3 Reserved

Set to "0".

SW52 No. 4, No. 5 Reserved

Set to "1".

SW52 No. 6 Reserved

Set to "0".

SW52 No. 7 Reserved

Set to "1".

SW52 No. 8 Reserved

Set to "0".

SW53 No. 1, No. 2 Reserved

Set to "0".

SW53 No. 3 Reserved

Set to "1".

SW53 No. 4 ~ No. 6 Reserved

Set to "0".

SW53 No. 7, No. 8 Reserved

Set to "1".

FO-2950MGR/GH/MY/TH

2 – 25

Page 42

FO-2950MGR/GH/MY/TH

[3] Troubleshooting

1. Fax 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.

• Increase the transmission level SOFT SWITCH 8-4, 5, 6, 7, 8

May be used in case [1] [2] [3].

• Apply line equalization SOFT SWITCH 8-1, 2

May be used in all cases.

• Slow down the transmission speed SOFT SWITCH 6-5, 6, 7, 8

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.

• Decrease the transmission level SOFT SWITCH 8-4, 5, 6, 7, 8

May be used in case [3].

TO: ATT: Ref.No.: CC: ATT: Date : FM: Dept :

Sign :

***** Facsimile communication problem ***** From: Mr. Fax Tel No.: Our customer Name Tel No.

Address Fax No. Contact person Model name

Other party Name Tel No.

Address Fax No. Contact person Model name

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

Reception / Transmission

Frequency: % ROM version: Confirmation

item

Our customer

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

Other party

Please mark problem with an X No problem is: 0

A1 A2 B1 B2 C1 C2 D1 D2 E1 E2

Ref.No.: Date:

A1 A2

C1 D2

C2 D1

E1 E2

Our service

Comment

Countermeasure

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

Other part

's service

Transmission level setting is ( ) dB at our customer Transmission level ( ) dBm Reception level ( ) dBm By level meter at B1 and B2

2 – 26

Page 43

[4] Error code table

1. Communication error code table 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 fallback

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 on 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

error retransmission was attempted.

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

impossible.

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

FO-2950MGR/GH/MY/TH

G3 Reception

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

reception is possible or not. 12 − Error occurred during or just after fallback. 13 − Error occurred after the retransmission end command was received.

2 – 27

Page 44

FO-2950MGR/GH/MY/TH

CHAPTER 3.

MECHANICAL DESCRIPTION

[1] Mechanical description

1. Facsimile block 1-1. Document feed block and diagram

1st transfer

Rear plate

2nd transfer pinch roller

2nd transfer roller

pinch roller

ORG sensor

CIS

Separation rubber plate

1st transfer roller

Fig. 1

2. Document feed operation

1) As shown in Fig.1, the document set in the hopper (the front sensor is on) is fed with the let out roller and paper feed roller which rotate together with the pulse motor.

2) When a specified number of pulses are received from the document sensor after the document lead edge is sensed, scanning will be started.

3) When a specified number of pulses are received from the document sensor after the document rear edge is sensed, scanning will be ended to discharge the document to the tray.

4) If the front sensor is on (the document is set up in the hopper), the next document is supplied and fed nearly when the last document is completely read and discharged. If the front sensor is off (no document is set up in the hopper), the drive will be stopped when the document is discharged to the tray.

3. Hopper mechanism

3-1. General view

Front sensor

Document

Feed roller

2) Document separation system: Friction + speed reduction ratio + roller backlash separation system

Last document

Separate rubber plate

First document

Feed roller

Fig. 3

3-3. 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.

• Adjust the document guides to the document width.

• 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 straighten out.

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

thicknesses together.

3-4. Documents applicable for automatic feed

Product specifications

Indication Lower Limit Upper Limit Weight Metric system 52g/m indication indication Thickness Metric system 0.06mm 0.1mm indication indication Document Document size Minimum (148mm × 128mm) size Range A4 (210mm × 297mm)

Number of Document size ADF sheets

Weight Legal 1 sheet

Paper Kind Paper of fine quality/bond paper/ quality Kent paper

80g/m

Letter (216mm × 279mm) Legal (216mm × 356mm) Minimum ~ Letter/A4 size 20sheets

More than 90 kg Below 135kg 1 sheet

Fig. 2

The hopper is used to align documents with the document guides adjusted to the paper width.

NOTE: Adjust the document guides before and after inserting the docu-

ment.

3-2. Automatic document feed

1) The structure with secure paper feed of the transfer roller and secure separation of the separation rubber plate system is employed. The transfer roller is circular as to be rotated only when the paper feed roller is driven with the 2-step paper feed clutch mechanism. Moreover, the separation securely done by running the paper feed and transfer rollers more slowly than the feed roller.

NOTE: Double-side coated documents and documents on facsimile re-

cording paper should be inserted manually.

Documents corresponding to a paper weight heavier than 90kg and lighter than 135kg are acceptable for manual feed.

Documents heavier than 135kg in terms of the paper weight must be duplicated on a copier to make it operative in the facsimile.

3 – 1

Page 45

4. Paper Path

5. Components Layout

FO-2950MGR/GH/MY/TH

Print Exit

Document Exit

Fig. 4

123456789101112131415

39 38 37 36

35 34

No.

Fusing temperature sensor (thermistor)

Face-down paper exit roller

Temperature fuse(187˚C)

Temperature fuse(132˚C)

Main charger roller

Cylinder lens

Third mirror

Developing doctor

First mirror

Laser start position sensor

Toner sensor

Scanner motor

Second mirror

Scanner mirror

Laser unit

Paper empty detector

Paper feed clutch solenoid

Fan motor

Paper feed roller

Paper separation sheet

Fig. 5

212223242526272829303132

No.

PIN sensor

Toner supply roller

Developing roller

Transfer charger roller

Photoconductor drum

Discharge brush

Pressure roller

Heat roller

Paper exit detector

Separation pawl

Feed roller

1st. transfer roller

CIS

2nd. transfer roller

2nd. transfer pinch roller

Rear plate

1st. transfer pinch roller

ORG sensor

Front sensor

16 17

18 19

PARTS NAMEPARTS NAME

3 – 2

Page 46

FO-2950MGR/GH/MY/TH

6. Switch, Sensor Layout

No.

1



2



PARTS NAME TYPE DESCRIPTION

PE sensor (Paper Empty sensor) Front cover open detector

   

3

POUT sensor



(Paper OUT sensor)

4

PIN (Paper In) sensor

  

5

Temperature fuse



187˚C



6

Temperature fuse



132˚C



7

Thermistor



Toner sensor

Fig. 6

Photo transistor (Transmission type) Microswich

Detects presence of paper on the multi-purpose paper tray. 24V line safety swich. When the front cover is opened, this swich is turned off to cut the 12V line except for "ERROR" and "ON LINE" LED. By this, the main motor, the heater lamp, and the high voltage power sourse is turned off.

Photo transistor

Detects paper out, and paper jams. (Transmission type) Photo transistor (Transmission type) (Common with the 2nd PIN sensor) Termal fuse

When this swich is turned on, paper

transport and image transfer from the

drum are started.

This is also used for detection of paper jam.

When the heat roller temperature rises

abnormally, this fuse cuts off the power

relay power line(12V line) Termal fuse

When the heat roller temperature rises

abnormally, this fuse cuts off the heater

lamp power line. Thermistor

This thermistor detects the temperature

on the heat roller. Photo coupler

This photo coupler detects toner quantity.

3 – 3

Page 47

7. PRINT PROCESS 7-1. Image forming process

Normal paper is used as print paper. A laser beam is used to expose on the OPC surface to form latent electrostatic images, which are developed into visible images (toner images) and are transferred on paper. The basic operation is composed of the five processes: charging, exposure, development, transfer, and cleaning.

7-2. System diagram

Laser

Scanning

mirror

No.1 ~ No.3

Mirrors

beam

Laser beam

FO-2950MGR/GH/MY/TH

generator

DC-850V AC600V(P-P)

Main

charger

brush

DC+500V

Separation electrode

Photoconductor

drum

Transfer

roller

Develo-

ping

roller

DC-250V

DC+3500V AC600V(P-P)

Toner

Image data

DC-310V

Printer PWB

Paper

High voltage

section

Fig. 7

3 – 4

Page 48

FO-2950MGR/GH/MY/TH

ASIC

IC15

(LR38784A)

131 MCON

MCON

TC-BIAS ON

CPU

(SH7041)

129

115

TC/Bias ON

PW MSIN

PRINTER PWB

512

Driver

IC1

314

Q3 Q5

Q9 Q8

+24VP

Trans

DC Bias

Charger roller

OPC DRUM

Separation electrode

Transfer roller

100V

Doctor

Supply roiier

Developing roller

7-3. Image forming process diagram

High voltage circuit

Main charger brush

High voltage circuit

Paper exit

Dischange brush

Fusing

Dischange

Separation electrode

Cleaning, Charge

Separation

Fig. 8

Scanning mirror

Mirror

Exposure

Transfer

Lens Laser diode

Development cleaning

Paper feed roller Paper tray Paper

Toner

Developing roller

High voltage circuit

Heat roller Pressure roller

Heater lamp

Transfer roller

High voltage circuit

Fig. 9

3 – 5

Page 49

FO-2950MGR/GH/MY/TH

7-4. Functions and operations of major parts

Developing roller brush

Doctor

Toner stirring plate electrode

Toner supply roller

Fig. 10

Toner seal

Transfer roller

Separation

OPC drum

Discharge

Main charger brush

Toner seal

(1) OPC drum unit

The OPC drum is charged and latent electrostatic images are formed on it and developed into visible toner images.

a. OPC drum

Latent electrostatic images are formed and developed into toner images on the OPC drum.

Organic Photo Conductor is used. The OPC surface is charged negatively by the main charger brush.

When the OPC is exposed to laser beam, the electric resistance of the exposed section falls and electric charge is generated in the OPC. As a result, electric charge on the OPC surface is removed. This principle is used to form latent electrostatic images.

c. Toner seal

The OPC drum unit is provided with two toner seals, which prevent leakage of toner remaining in the OPC drum unit.

(2) Developing unit

Latent electrostatic images formed by laser beam on the OPC drum are developed to visible images by the developing unit. Toner is filled in the developing unit.

a. Developing roller

The developing roller is made of urethane and has a high electric resistance. It is flexible and is in close contact with the OPC drum. Toner on the developing roller is attached to latent electrostatic images on the OPC drum to form visible images on the OPC drum. A voltage of DC-250V is applied the developing roller.

b. Doctor

The doctor is in close contact with the developing roller. It adjusts toner quantity on the developer roller surface.

The doctor is made of conductive material.

c. Toner supply roller

Toner is supplied to the developing roller by the sponge roller which is connected to the developing roller.

d. Toner stirring plate

This plate stirs toner in the developing unit to transport it to the developing roller smoothly.

e. Toner seal

The toner seal prevents toner from leaking outside the developing unit.

(3) Transfer charger roller

The transfer charger roller is made of urethane and has a high electric resistance. It is flexible and is in close contact with the OPC drum.

A high voltage of AC 600V (P-P) and DC +3500V are applied to charge. It positively charges paper transported from the paper feed section, which

transfers negatively charged toner on the OPC drum onto the paper.

(4) Separation electrode

This electrode is connected to the drum ground. It discharges paper which was positively charged in the transfer section to reduce the potential difference with the OPC drum to reduce static electricity between the paper and the OPC drum, thus facilitating separation of paper.

(5) High voltage unit (in the Printer PWB)

A high voltage is generated by the invertor system, and is supplied to the main charger unit, the transfer charger unit, and the developing roller.

OPC layer

Fig. 1 1

b. Main charger brush

The main charger brush charges the OPC drum surface. It is composed of brush fibre, and is in the shape of a roller. A high voltage of AC 600V (P-P) and DC-850V are applied to charge the brush.

The main charger brush is in contact with the OPC drum. BY applying electric charge to the OPC drum, the OPC drum is charged to about 1kV.

CTL (Charge transfer layer) CGL (Charge generation layer)

Aluminum layer

3 – 6

Page 50

FO-2950MGR/GH/MY/TH

7-5. Image forming operation

STEP 1 (Cleaning, Charging): Residual toner the OPC drum is stirred

and negative charges are scattered evenly on the OPC drum. (The OPC drum surface is evenly charged.)

The main charger is a rotating brush roller. The main charger removes residual toner from the OPC drum by its rotating sweeping action and causes it to stick to the brush. At the same time, a high voltage of –850V is applied to the main charger roller to generate a discharge of electricity between the roller and the OPC drum, generating positive and negative charges. The negative charges are attracted to the OPC drum, and evenly distributed on the OPC drum. (The OPC drum surface is evenly charged.)

STEP 2 (Exposure): Laser beam scanning light corresponding to the

print data is radiated on the OPC drum.

Positive and negative charges are generated in the OPC drum CGL exposed with the laser beam.

Positive charges generated in the CGL are attracted toward the OPC drum surface (negative charges), and negative charges toward the aluminum layer (positive charges).

Therefore, the positive and negative charges neutralize each other in the laser-exposed area of the OPC drum surface and the aluminum layer, decreasing the potential of the OPC drum surface.

The area which is not exposed to laser beam has no change, and the OPC drum surface remains negatively charged to keep a high potential. As a result, latent electrostatic images are formed on the OPC drum.

AC600V (P-P)

DC-850V

Residual toner

CTL

Aluminum layer (drum base)

CGL

Main charger brush

OPC drum

Non-exposed area

Laser beam

Exposed area

CGL

Aluminum layer (Drum base)

CGL

Aluminum layer (Drum base)

CTL

Fig. 12

Fig. 13

3 – 7

Page 51

FO-2950MGR/GH/MY/TH

STEP 3 (Development): Toner is attached to the latent electrostatic

images on the OPC drum to form visible images.

Doctor

Developing roller

DC-250V

: Toner (Negatively charged)

Scraper

Toner supply roller

100V

On the other hand, when an area of OPC drum which was not exposed to the laser beam and did not lose its charge comes in contact with the developing roller, any residual toner attached to the OPC drum is transferred to the developing roller which is more positively charged.

As a result, unnecessary toner on the OPC drum is collected by the developing unit.

The operating principle for that case is contrary to that for transfer of toner from the developing roller to the OPC drum surface. (The electric field energy direction is contrary.)

STEP 4 (Transfer): Visible images of toner on the OPC drum are trans-

ferred to the paper.

OPC drum

Exposed area (Exposed to laser beam)

Non-exposed area (Not exposed to laser beam)

Aluminum layer (Drum base)

CGL

CTL

Grounding sheet

-310V

Fig. 14

Toner is transported to the scraper area by the toner supply roller and the developing roller. The quantity of toner to be transported to the doctor section is controlled by the scraper. Toner transported to the doctor section is then passed between the developing roller and the doctor to form a thin toner layer on the developing roller by the pressure applied by the doctor.

When toner passes between the developing roller and the doctor, it is charged negatively by friction.

When an area of OPC drum which was exposed to laser beam and lost its charge comes in contact with the developing roller, toner moves from the developing roller to the OPC drum surface.

The principle of toner movement from the developing roller to the OPC drum surface is as follows.

The bias voltage of DC-310V is applied to the developing roller. Toner is charged negatively by the difference (electrical energy) between the bias voltage and the OPC drum surface potential and is attracted to the OPC drum surface which is positively charged.

At that time, the potential of the area of the OPC drum which was exposed to the laser beam and lost its charge is higher than that of the developing roller.

Aluminum layer

(Drum base)

OPC drum

DC+3500V AC600V(P-P)

CGL

CTL

Paper

Transfer roller

Fig. 15

The high voltage of DC+3500V plus AC600V (P-P) is applied to the transfer roller to generate electric discharge between the roller and the OPC drum, generating positive and negative charges. Positive charges are attracted to the OPC drum and attached to the paper transported between the transfer roller and the OPC drum. Therefore the paper has a strong positive charge.

Negatively charged toner on the OPC drum is attracted by the paper which is positively charged, and the visible images of toner are transferred onto the paper.

3 – 8

Page 52

FO-2950MGR/GH/MY/TH

STEP 5 (Paper separation): The paper is separated from the OPC

drum.

Aluminum layer

(Drum base)

CGL

CTL

STEP 6 (Discharge): The drum surface is discharged to facilitate clean-

ing of the drum surface. (The remaining toner is easily collected by the main charger roller.

Main charger roller (brush)

Paper

Separation electrode

Transfer roller

Fig. 16

There is an electrostatic force between the paper which is positively charged in transfer operation and the OPC drum which is negatively charged. The positive charge on the paper is released to the separation electrode, which is the same potential as the aluminum layer of the OPC drum, to reduce the potential difference between the OPC drum and the paper, reducing the electrostatic force.

This operation facilitates separation of the paper from the OPC drum.

AC600V (P-P)

Residual toner

OPC drum

DC-850V

CTL

Aluminum layer (Drum base)

CGL

Fig. 17

STEP 7 (Cleaning): Residual toner on the OPC drum is removed. The main charger is a rotating brush roller. The main charger removes residual toner from the OPC drum by its

rotating sweeping action and causes it to stick to the brush. The main charger brush is in close contact with the mesh-type brush cleaning plate which removes toner and paper dust from the main charger brush mechanically.

3 – 9

Page 53

7-6. OPC drum surface potential

FO-2950MGR/GH/MY/TH

(1) Transition of OPC drum surface potential by print

operation

Laser beam

-850V

Dark area potential

(2) OPC drum surface potential and developing bias

voltage in development

During

Start

developing

Dark area potential

Stop

-250V

OPC surface potential (-V)

Charging/ cleaning

Toner attachment potential

Light area potential

Exposure

Residual toner collection /Developing

Timer (OPC drum rotating angle)

Fig. 18

Transfer

Developing bias

Charging

-400V

Developing bias

OPC drum surface potential (-V)

Light area potential

Time (OPC drum rotation angle)

Fig. 19

3 – 10

Page 54

FO-2950MGR/GH/MY/TH

[2]Disassembly, assembly,

lubrication

This chapter describes the disassembly, assembly, and lubrication procedures.

(Contents) This chapter describes the disassembly procedures of parts. For as-

sembly, reverse the disassembly procedures. If a special care is required, a note is provided.

1. Panel unit

2. Top cabinet, rear cabinet

3. Control PWB unit, TEL/LIU PWB unit, Printer unit

4. Printer PWB unit, Power supply PWB unit

5. Feed guide unit, Scanner bracket

6. Document guide lower, Scanner unit

7. Panel unit, Document guide upper unit

8. Drive unit

9. Upper frame unit (optical frame unit)

10. Main motor

11. Paper feed roller

12. Paper feed solenoid

13. Sleeve release lever

14. PE lever (Paper Empty lever)

15. Lock lever

16. Fan belt

17. Fusing unit

18. Separate nails

19. Heat roller, heater lamp

20. Thermal fuses

21. Thermistor

22. AC connection wire

23. Paper exit roller upper

24. Transfer roller

25. Fusing roller

26. Separation electrode

27. PIN actuator (Paper IN detection lever)

28. POUT actuator (Paper OUT detection lever)

29. Separate plate ass’y

30. High voltage terminal DR-MC (High voltage terminal: Photoconductor drum main charger)

31. High voltage terminal TC (High voltage terminal: transfer charger)

32. DV bias electrode

(Necessary tools) No special tools are required for disassmbly and assembly of this

machine. As general tools, screwdrivers (+) (–) (Large/small), spring hook, and

tweezers are used.

(Grease) The following grease is used in this machine.

No. Parts code Part name

1 UKOG-0168FCZZ AR Conductive grease 2 UKOG-0238FCZZ BB Floil G-484

Major points to be greased are as follows. [Conductive grease]

Apply a small quantity of grease to the transfer roller and the high

• voltage terminal TC.

[Floil G-484]

Inner circumference and tooth surface of the fusing clutch gear

• Tooth surface of the main motor gear.

• Paper feed roller gear, Clutch R sleeve, Clutch spring

• The shaft and tooth surface of the other gears.

• Developer drive gear A tooth peripheral

• PU idle gear A tooth peripheral

•

When any parts which require greasing up are disassembled or replaced, be sure to grease them when reassembling.

Note: Be careful not to apply grease to the fan belt.

Apply Floil G-484 (UKOG-0238FCZZ) to all the gear shafts.

Apply Floil G-484 (UKOG-0238FCZZ)

Price

rank

Fan belt

Apply Floil G-484 (UKOG-0238FCZZ)

Fig. 1

3 – 11

Page 55

Apply Floil G-484 (UKOG-0238FCZZ) to the fusing clutch gear teeth and the inside.

Fig. 2

Apply Floil G-484 (UKOG-0238FCZZ) to the gear teeth of the main motor.

FO-2950MGR/GH/MY/TH

Apply Floil G-484 (UKOG-0238FCZZ) to the drum lock lever.

Apply Floil G-484 (UKOG-0238FCZZ)

Fig. 3

Apply Floil G-381 (ZGLYC-00003GC) to the sections shown with arrows in the figure below.

Fig. 4

Apply grease to the paper feed roller gear teeth peripheral and the

• side.

Apply grease to the whole surface of the clutch spring.

• Apply grease the side of the clutch R sleeve.

•

Fig. 5

Apply Floil G-484 (UKOG-0238FCZZ) to the fan shaft.

Apply grease to the fan shaft

Fig. 6

Note: For disassembly and assembly, be careful of the following items. a. The units and parts which should be replaced in maintenance are

described.

b. The screws which are difficult to be found and the units and parts

which require certain disassembly sequence or special technique are described. The units and parts which can be disassembled easily are not described.

c. The cables and clamps are not described unless any special note is

required. When removing them, remember the positions.

d. Remove the imaging cartridge and the drum cartridge before disas-

sembly.

e. The parts which are not described in the parts guide must not be

disassembled.

f. The optical system require precise adjustments, which are not per-

formed in the market. Replace the unit of the optical system which are attached to the upper frame, and do not disassemble it.

3 – 12

Page 56

FO-2950MGR/GH/MY/TH

1. Panel unit

Remove screw, and remove ROM cover. (Hook x 5)

Remove three screws.

Remove screw.

Remove four cables, and remove panel unit.

Remove two screws, and remove inner cabinet. (Hook x 2)

HOOK

ROM Cover

2. Top cabinet, rear cabinet

Remove two screws, and remove top cabinet. (Hook x 2)

Remove rear cabinet. (Hook x 5)

Top cabinet

HOOK

Panel unit

HOOK

Inner cabinet

HOOK

Rear cabinet

Fig. 8

TEL/LIU PWB unit

Control PWB unit

Fig. 7

3 – 13

Page 57

FO-2950MGR/GH/MY/TH

Printer unit

Printer PWB unit

Bottom plate

Power supply PWB unit

AC cord

3. Control PWB unit, TEL/LIU PWB unit, Printer unit

Remove six screws.

Remove four cables.

Remove two connectors, and remove control PWB unit and TEL/ LIU PWB unit.

Remove five screws, and remove printer unit.

TEL/LIU PWB unit

Control PWB unit

Printer PWB

Control PWB

4. Printer PWB unit, Power supply PWB unit

Remove four screws, and remove printer unit.

Remove four cables.

Remove five screws.

Remove fan motor cable, and remove printer PWB unit.

Remove five screws, and remove power supply PWB unit.

Remove connector of AC cord.

TEL/LIU

PWB unit

Control PWB unit

Printer unit

Fig. 9

Bottom cabinet

Fig. 10

3 – 14

Page 58

FO-2950MGR/GH/MY/TH

5. Feed guide unit, Scanner bracket

Remove two screws, and remove feed guide unit. (Hook x 7)

Remove two screws.

Remove three cables.

Remove two screws, and remove scanner bracket.

Remove two screws.

Shading plate

HOOK

6. Document guide lower, Scanner unit

Remove three screws, and remove document guide lower. (Hook x 2)

Remove screw.

Document guide lower

Feed guide unit

HOOK

Document guide lower

HOOK

Scanner bracket

Panel unit

Fig. 11 Fig. 12

Scanner unit

Panel unit

3 – 15

Page 59

FO-2950MGR/GH/MY/TH

7. Panel unit, Document guide upper unit

Remove two screws, and remove document guide upper unit.

Document guide upper unit

8. Drive unit

Remove two screws, and remove drive unit.

Remove two screws.

Transfer motor

Radiation plate

Drive frame

Drive unit

Panel unit

Fig. 13

Scanner frame

HOOK

Fig. 14

3 – 16

Page 60

FO-2950MGR/GH/MY/TH

9. Upper frame unit (optical frame unit)

Remove three connectors.

Remove four screws, and remove gear plate. At that time, fusing clutch gears and fusing clutch spring are also disassembled.

Remove motor idle gear.

Remove fan belt from developer drive gear A, and pull out the developer drive gear A. At that time, developer drive gear B is also disassembled.

Remove four screws.

Remove the arm of upper frame unit from the lower frame boss.

Rotate upper frame unit in the direction of arrow (B) so that the arm can be disassembled from the lower frame boss.

Note for assembly

When attaching the upper and the lower frames, be careful not to pinch

•

the cables.

Fusing clutch lever

Fusing clutch gear B

Fusing clutch spring

Drum idle gear

Fusing clutch gear A

Developer drive gear B

Developer drive gear A

Motor idle gear

Gear plate

Boss

Arm

Boss

Arm

(B)

Arm

Arm Boss

Fig. 15

Fig. 16

3 – 17

Page 61

10. Main motor

Remove two screws and remove fusing gear cover.

Remove PU idle gears.

Remove two screws.

Slide and remove main motor from the notch in the upper frame.

At that time, be careful not to damage or bend the shading sheet.

•

Note for assembly

When attaching main motor, put the cable to the right side.

•

Remove the tray lock lever.

FO-2950MGR/GH/MY/TH

PU idle gears

Main motor

Fusing gear

cover

Tray lock lever

Fig. 19

The clearance between the clutch boss and the clutch gear must be

0.1(+0.02/–0.03)mm

Remove the red reversing screw from the paper feed roller shaft.

Remove the paper feed clutch gear.

Pull out the paper feed roller.

Pull out the clutch sleeve, the clutch spring, the clutch R sleeve, and the paper feed roller boss from the paper feed roller shaft at the same time.

Note for assembly

When assembling the paper feed roller boss, the clutch R sleeve, the

•

clutch spring, and the clutch sleeve to the paper feed roller, be careful

to the directions of the parts. Insert one of the bent section ( ) of the clutch spring into the hole ( ) in the clutch R sleeve, and insert the other bent section into the hole ( ) in the clutch sleeve securely.

Paper feed roller

Paper feed clutch gear

Fig. 17

11. Paper feed roller

Remove two screws and remove fusing gear cover.

Remove PU idler gears.

PU idle gears

Fig. 18

Fusing gear cover

Clutch R sleeve

Clutch spring

Paper feed roller boss

Fig. 20

Clutch sleeve

Paper feed clutch gear

No Good

Good

3 – 18

Page 62

FO-2950MGR/GH/MY/TH

12. Paper feed solenoid

Remove connector.

Remove lever release spring which is attached to sleeve release lever.

Remove one screw.

Slide paper feed solenoid and remove it from between curved mirror ass’y and the upper frame. Note: At that time, do not disassemble curved mirror ass’y. (Never

loosen the fixing screw.) If it is removed or shifted, precise adjustments are required, which cannot be performed in the market.

Note for assembly

When lever release spring is completely removed, and when it is at-

•

tached again, hang the one side of lever release spring on paper feed solenoid before attaching paper feed solenoid to the upper frame. When attaching the paper feed solenoid, refer to the above figure for

•

the correct fixing position. Be careful that the arm of paper feed solenoid is under sleeve release

•

lever.

13. Sleeve release lever

Rotate sleeve release lever in the direction (A) and remove the shaft of sleeve release lever from the notch of the upper frame and remove it from the upper frame.

Sleeve release

(A)

lever

Notch

Fig. 22

Paper feed

solenoid

Lever release spring

Paper feed solenoid

Arm

Sleeve release

lever

Never loosen

Sleeve release lever

Be careful to the direction of the hook

Spring

Curved mirror ass'y

14. PE lever (Paper Empty lever)

Slightly turn the PE lever in the direction of arrow (A) , and slide it in the direction of arrow (B).

Remove the notch section of PE lever shaft from the notch section of the upper frame as shown in arrow (C) , and remove PE lever.

PE lever

(C)

(A)

(B)

Notch section

Fig. 23

Sleeve release

lever

Arm

Fig. 21

3 – 19

Page 63

FO-2950MGR/GH/MY/TH

Separate nails

15. Lock lever

Remove connectors, and remove the cables from fusing gear cover.

Remove two screws, and remove fusing gear cover.

Remove lock lever spring, and pull out lock lever from the upper frame.

Lock lever spring

Tray lock lever

Fusing gear cover

Fig. 24

17. Fusing unit

Remove connectors.

Release the protect of the cable connected to 1 from the lower frame.

Remove two fixing screws of fusing harness (white, black).

Power Thermal fuse (upper) Heater lamp (lower)

200V series Black White

Remove two screws of the fusing section.

Pull out the fusing unit.

Note for assembly

When attaching the fusing harness, be careful to the color and do not

•

attach reversely.

Fusing harness (Black)

Fusing harness (White)

16. Fan belt

Remove four screws, and remove gear plate. At that time, fusing clutch gear A and fusing clutch spring are also disassembled

Pull out motor idle gear.

Remove fan belt from developer drive gear A.

Remove fan belt from between fan and fan cover.

Developer drive gear A

Fan belt

Motor idle gear

Fusing unit

Fig. 26

18. Separate nails

Remove four springs and remove four separate nails.

Fusing clutch spring

Fusing clutch gear A

Fig. 25

Gear plate

Fig. 27

3 – 20

Page 64

FO-2950MGR/GH/MY/TH

19. Heat roller, heater lamp

Remove two screws.

Lift up the heat roller together with heater lamp, and slide it in the direction of arrow (A) and remove from fusing cover. Insert paper between the separate nail and the heat roller not to damage the heat roller surface. At that time, fusing gear and fusing bearing are also disassembled.

Remove heater lamp from heat roller.

When passing heat roller through fusing gear, pass the notch of heat

•

roller through the convex part of fusing gear as shown.

Heater lamp

Heat

roller

Heater lamp

Note for assembly (additional phrase)

When assembling the heat roller , insert a paper between the separate nail and the heat roller in order not to scratch the heat roller surface.

When attaching heat roller to fusing cover, lift up the 4 parts of the

•

separate nails. When inserting heater lamp into heat roller, check the inserting direc-

•

tion. (Check the shape of the terminal.) When attaching fusing gear, check the direction as follows.

•

(B)

Separate nails

Fusing cover

(A)

(B)

Separate nails

Fig. 28

(B)

Fusing bearing

Fusing gea

Fig. 30

20. Thermal fuses

Remove one screw.

Remove the temperature fuse holder from the fusing cover.

Release the protect of the temperature fuse holder cable, and remove the temperature fuse holder.

Remove the fuse sheet.

Remove two screws. (One from the back, and one from the front.)

Remove the temperature fuse from the fusing cover.

Separate nail

Fusing separate spring

Temperature fuse holder

Fuse sheet

Temperature fuse

Boss part (Out side)

Fusing gear

Fig. 29

Fusing cover

Fig. 31

3 – 21

Page 65

FO-2950MGR/GH/MY/TH

21. Thermistor

Remove one screw, remove the protect of the thermistor cable, and remove the thermistor.

Note: Be careful not to mistake the installing direction of the ther-

mistor. Attach so that the thermistor orange cover side is on the front side of the heat roller.

Thermistor

23. Paper exit roller upper

Bend the shaft of paper exit roller upper A, and disengage it from the hook of fusing cover and remove it in the direction of arrow (A) .

Remove the shaft of paper exit roller upper A from the notch of fusing cover, and remove paper exit roller upper A.

Use tweezers to disengage the hook of fusing knob, separate it into two sections, and remove it from paper exit roller upper A.

Remove paper exit roller upper B in the direction of arrow (B), and remove it from fusing cover.

Paper exit roller upper B

Paper exit roller upper A

(B)

Fusing cover

(A)

1 2

Fig. 32

22. AC connection wire

Remove one screw.

Remove AC connection wire in the direction of arrow (A) . At that time, pull out the bent section of AC connection wire from the notch of the fusing cover.

Note for assembly

When installing the wire, the nut is attached.

•

AC connection wire

Notch

Fusing knob

Paper exit roller upper A

Hook

(A)

AC connection wire

Fig. 33

Fig. 34

3 – 22

Page 66

FO-2950MGR/GH/MY/TH

24. Transfer roller

Insert a screwdriver into the bearing installation hole on the nondrive side and remove the bearing.

Remove the transfer roller from the main body. Note: When installing the transfer roller, install the pressure springs

(2 pcs.) . Be careful not to scratch the transfer roller or not to attach foreign materials.

Fig. 35

25. Fusing roller

Remove the fusing roller.

Fusing roller

Fig. 37

26. Separation electrode

Remove four screws, and remove gear plate. At that time, fusing clutch gear A and fusing clutch spring are also disassembled.

Pull out motor idle gear and remove drum idle gear.

Remove earth terminal fixing screw.

Slide the earth terminal in the direction of A and remove it from the main body frame.

When pulling out the grounding section of separation electrode

•

lastly, the bent section of electrode is caught by the lower frame. Therefore, use a screwdriver (–) to hold the electrode section of separation electrode so as not to be caught as follows (Fig. 39).

Pressure spring

Transfer roller

Fig. 36

Pressure spring

Fusing clutch spring

Earth terminal

Drum idle gear

(A)

Motor idle gear

Fusing clutch gear A

(DV Bias)

Gear plate

Fig. 38

3 – 23

Page 67

Separation electrode

Bent section

FO-2950MGR/GH/MY/TH

27. PIN actuator (Paper IN detection lever)

Turn the PIN actuator and slide the thin section of the shaft in the arrow (A) direction and remove it from the lower frame.

PIN actuator

Fig. 39

Hold the right side of separation electrode with tweezers and disengage it from the lower frame boss and remove upward as follows.

Separation electrode

Boss

Separation electrode

Fig. 40

Fig. 42

28. POUT actuator (Paper OUT detection lever)

Turn the POUT actuator and slide the thin section of the shaft in the arrow (A) direction and remove it from the lower frame.

POUT actuator

Fig. 43

Note for assembly

When attaching the PWB unit to the lower frame, put the lower frame

•

upside down. Face the PIN actuators and POUT actuator as shown in the figure below.

Note :Drum earth electrode so that it is on the terminal on the PWB unit

as follows.

Fig. 41

< Good >< No Good >

Fig. 44

3 – 24

Page 68

FO-2950MGR/GH/MY/TH

29. Separate plate ass’y

Insert a screwdriver (–) between the separate plate unit arm and the lower frame from the lower frame paper passing side, and drive it in the direction of arrow (A) to remove the temporal fixing stopper and remove the separate plate upward (in the direction of arrow (B)).

Pull out the other separate plate ass’y toward you in the same manner.

Remove spring, and remove separate plate ass’y.

Separate plate ass'y

1 2

(B)

Spring

(A)

31. High voltage terminal TC (High voltage terminal:transfer charger)

Use tweezers to pick up the projection of high voltage terminal TC, and remove high voltage terminal TC.

High voltage terminal TC

Fig. 47

32. DV bias electrode

Remove two screws, and remove fusing gear cover.

Remove PU idle gears.

Fig. 45

30. High voltage terminal DR-MC (High voltage terminal: Photoconductor drum main charger)

Remove high voltage terminal DR-MC.

Terminal cover is included.

•

Cover

High voltage terminal DR-MC

Fusing gear cover

PU idle gears

Fig. 48

Remove four screws, and remove gear plate. Then fusing clutch gear A and fusing clutch spring will come off.

Pull out motor idle gear.

Motor idle gear

Drum idle gear

Gear plate

Fig. 46

3 – 25

Fusing clutch spring

Fusing clutch gear A

Fig. 49

Page 69

FO-2950MGR/GH/MY/TH

Not touch

Panel Unit

Panel cable

Motor cable

CIS cable

Core

Remove two screws.

Pull DV bias electrode toward you, and remove it from the lower frame.

DV bias electrode

Fig. 50

Note for assembly

When attaching DV bias electrode, adjust so that the contact is over

•

the DC-bias electrode of the PWB unit.

Optical section

Do not touch the mirror fixing screw in the optical section. If touched,

•

the mirror bracket may be change, causing a shift in the print image position or vague images. The mirror angle cannot be adjusted in the market. Do not touch the volume attached. If touched, normal images cannot

•

be produced. This adjustment cannot be made in the market.

Terminal

Fig. 51

Note

Fusing section:

When fixing the cable of the temperature fuse and the thermistor, put it

•

neat inside the projection of the frame. If not, paper jams may be resulted.

Fig. 53

33. Wire treatment

Fig. 54

Fig. 52

3 – 26

Page 70

FO-2950MGR/GH/MY/TH

CPU

SH7041

SRAM

1M bit

ROM

8M bit

MODEM

14.4k bps

DRAM

1M x 16bit x 2

SCAN LSI

LC82103

RTC

4M bit DRAM

ONLY PC-PRINT

THERMISTER

TEL/LIU

PWB

CIS

SCANNER MOTOR

CNRTH

CNLIU

CNCIS

OPERATION PANEL

PWB

LCD

CNMT

CNPN

SPEAKER

CNSP

ASIC

LR38784A

TONER

SENSOR

PICK UP

SOLENOID

LASER UNIT

PAPER FEED MOTOR

FAN

MOTOR

PRINTER

PWB

PERSONAL

COMPUTER

CNPL

CNTNR

CNLSU

CNMMT

POWER

PWB

HEATER

LAMP

CNFM

CNHT

CNPW

CONTROL PWB

CNPRT

SENTRONICS CABLE

BAT

CHAPTER 4. DIAGRAMS

[1] Block diagram

4 – 1

Page 71

[2] Wiring diagram

CNPN

CNLIUA

CNMT

CNPRT

CNMMT

CNLSU

CNTNR

CNPL

CNPC

CN101

CNPW

CN2

CN1

LINE

EXT.TELHANDSET

HIGH VOLTAGE

CIRCUIT

INTERLOCK

SWITCH

AC 220-240V/50/60HZ

CNFM

CNHS1

CNLIUA

CNHS2

CNLIUB

TONER

SENSOR

CNSP

CNCIS

CIS

MOTOR

OPERATION

PANEL

PWB

LCD

CONTROL PWB

PRINTER PWB

PRINTER

MOTOR

AUTO POWER

CONTROL

PWB

LASER

SCANING

MOTOR

BEAM DETECTOR

PWB

LSU UNIT

PICKUP

SOLENOID

FAN

MOTOR

HEATER

LAMP

POWER SUPPLY

UNIT

CNFUSE

THERMAL

FUSE UNIT

CNRTH

THERMISTOR

HOOK

SWITCH

PWB

TEL LINE

TEL/LIU PWB

SPEAKER

CNLCD

Except for TH

FO-2950MGR/GH/MY/TH

4 – 2

Page 72

FO-2950MGR/GH/MY/TH

CNFUSE

+24VMG+24VS

123

CNRTH

+5V

RTH

CNSP

SP+

SP–

CNMT

12345

TPA

TPB

TPA-

TPB-

+24V

CNCIS

1234567

AODG5VSHCISCLK

GLED

VLED

TEL/LIU PWB

CNLIUACNLIUA

+24VDG+5VA

CML

CI-

HS-

RHS-

TXOUT

RXIN

TELMUTE

TELOUT

TELIN

+24VADG+5VA

CML

CI-

HS-

RHS-

TXOUT

RXIN

TELMUTE

TELOUT

TELIN

1234567891011

OPERATION

PANEL

PWB

CNPN

123456789101112131415161718192021

+5VDG+5VRSE

LD0

LD1

LD2

LD3

P-CHK

TONER

PC IN USE

TEL LINE

FRTSNS

ORGSNS

SEN0

SEN1

SEN2

SEN3

SEN4

B4SNS

+5VDG+5VRSE

LD0

LD1

LD2

LD3

P-CHK

TONER

PC IN USE

TEL LINE

FRTSNS

ORGSNS

SEN0

SEN1

SEN2

SEN3

SEN4

B4SNS

CNLCD

CNHS1

12345678910111213

+5VVORS

R/WEN.C.

N.C.

LD0

LD1

LD2

LD3

RHS-

CNHS2

RHS-

LCD

HOOK

SW PWB

CNFM

123

VFMOUT

N.C.

CNLIUBExcept for TH CNLIUB

12345

EXTSIG

E-RLY

MPXA

DPON

DPMUTE

RCVOL

12345

EXTSIG

E-RLY

MPXA

DPON

DPMUTE

RCVOL

PRINTER

PWB

POWER SUPPLY

CNPW

CN101

CN2

CN1

+5VDGDG

+24VHMGMG

+24VS

PWRLY-

HLON-

+24V

+5VDGDG

+24VHMGMG

+24VS

PWRLY-

HLON-

+24V

1234567891011

HLL

N.C.

HLN

123

N.C.

123

CNPL

+24V

PUS

CNMMT

123

MA-MBMB-

CNLSU

123456789

+24VDGVIDEO

SAMP

SYNC-

APCSTT

PMCLK

PMD-

CNPC

1234567891011121314151617181920212223242526272829303132333435

NSTOROBE

DATA1

DATA2

DATA3

DATA4

DATA5

DATA6

DATA7

DATA8

NACK

BUSY

PERROR

SELECT

NAUTOFD

N.C.DGDG

PLHDGDGDGDGDGDGDGDGDGDGDGDG

NINIT

NFAULT

N.C.

NSELECTON

CNTNR

12345

+5V

TSENDGN.C.

POUT-

PWMSIN

PIN-

DOP-

TSEN

24VS

MEN-MAMB

VIDEO

SAMP

SYNC-

APCSTT

PMCLK

PMD-PEMCOM

PUS

TC/BIASON

HLON

PWRLY

NSTOROBE

DATA1

DATA2

DATA3

DATA4

DATA5

DATA6

DATA7

DATA8DGZC

NACK

BUSY

PERROR

SELECT

NFAULT

NAUTOFD

NINIT

NSELECTIN

+5V

+5VDGDG

+24VH

+24V

VFM-

+24VMGMG

POUT-

PWMSIN

PIN-

DOP-

TSEN

24VS

MEN-

VIDEO

SAMP

SYNC-

APCSTT

PMCLK

PMD-

MCOM

PUS

TC/BIASON

HLON

PWRLY

NSTOROBE

DATA1

DATA2

DATA3

DATA4

DATA5

DATA6

DATA7

DATA8

NACK

BUSY

PERROR

SELECT

NFAULT

NAUTOFD

NINIT

NSELECTIN

+5V

+24VH

+24V

VFM-

+24V

1a1b2a2b3a3b4a4b5a5b6a6b7a7b8a8b9a9b10a

10b

11a

11b

12a

12b

13a

13b

14a

14b

15a

15b

16a

16b

17a

17b

18a

18b

19a

19b

20a

20b

21a

21b

22a

22b

23a

23b

24a

24b

25a

25b

1a1b2a2b3a3b4a4b5a5b6a6b7a7b8a8b9a

10a

10b

11a

11b

12a

12b

13a

13b

14a

14b

15a

15b

16a

16b

17a

17b

18a

18b

19a

19b

20a

20b

21a

21b

22a

22b

23a

23b

24a

24b

25a

25b

CNPRTCNPRT

CIS

PICK UP

SOLENOID

PRINTER

MOTOR

LSU

UNIT

TONER

SENSOR

FAN MOTOR

MOTOR

THERMAL

FUSE UNIT

HEATER

LAMP

THERMISTOR

SPEAKER

CONTROL PWB

[3] Point- to-point diagram and connector signal name

4 – 3

Page 73

FO-2950MGR/GH/MY/TH

CHAPTER 5. CIRCUIT DESCRIPTION

[1] Circuit description

1. General description

The compact design of the control PWB is obtained by using Risc Processor (CPU) 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

FAN

MOTOR

PRINTER

CONTROL

CIS

OPERATION

PANEL PWB

HEATER

LAMP

LINE CABLE

POWER SUPPLY

PWB

TEL/LIU

PWB

HOOK

PWB

AC CORD

Fig. 1

(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 (FM214) which is installed on the control PWB.

(2) TEL/LIU and Hook SW PWB

This PWB controls connection of the telephone line to the unit.

(3) Power supply PWB

This PWB provides voltages of +5V, VREG and +24V to the another PWB.

PWB

LSU UNIT

PICK UP SOLENOID

PRINTER MOTOR

TONER SENSOR

THERMAL FUSE UNIT

THERMISTOR

SPEAKER

MOTOR

LCD

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 ASIC (IC15). If the sensor signal was on, the motor is started to bring the document into the standby position. With depression of the STAR T 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 CPU(SH2) 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 fax CPU(SH2) 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 DMA transferred to the recording processor within the ASIC (IC15) and sent to the LSU on printer PWB. CPU (SH2) and ASIC (IC15) control printing data, LSU, main motor, high-voltage circuit, heater control and fan motor.

• Copy operation

T o 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 reading processor which is then sent to the image buffer of the RAM. Next, the data is transferred to the ASIC in the DMA mode to send the image data to the printer PWB in order to print. The copying takes place as the operation is repeated.

(4) Panel PWB

The panel PWB allows input of the operation keys.

(5) Printer PWB

This PWB controls the printer mechanical parts. This PWB employs 8 bit CPU that is installed on printer PWB. This CPU control a printer mechanical parts.

(6) LCD PWB

This PWB controls the LCD display.

5 – 1

Page 74

FO-2950MGR/GH/MY/TH

,

[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.

PA14/RD

PA15/CK

PF1/AN1

PF2/AN2

ASIC/PRINTING

CONTROL

BLOCK

PA13/WRH

PA12/WRL

PA10/CS0

PA11/CS1

PROM/MASKROM

128KB/64KB

CPU

INTERRUPT

CONTROLLER

SERIAL COMMUNICATION

INTERFACE

(X2CHANNELS)

COMPARE MATCH TIMER

(X2CHANNELS)

PF0/AN0

PA8/TCLKC/IRQ2

PA9/TCLKD/IRQ3

PA6/TCLKA/CS2

PA7/TCLKB/CS3

USER

BREAK

PA5/SCK1/DREQ1/IRQ1

PA4/TXD1

PE14/TIOC4C/DACK0/AH

PE15/TIOC4D/DACK1/IRQOUT

MAIN

CONTROL

BLOCK

MODEM/

CONTROL

BLOCK

IMAGE

SIGNAL

PROCESS

BLOCK

Fig. 2 Control PWB functional block diagram

2. Description of each block

(1) Main control block

The main control block is composed of HITACHI CPU (SH2), ROMX1 (8M bit), SRAMX1 (1M bit), DRAMX2 (4M bit). Devices are connected to the bus to control the whole unit.

1) SH7041 (IC5) : pin-144 QFP

The CPU Integrated Facsimile Controllers. SH7041, contains an internal 32 bit microprocessor with an external 16

bit address space and dedicated circuitry optimized for facsimile image processing and facsimile machine control and monitoring.

PA18/BREQ/DRAK0

PA19/BACK/DRAK1

PA21/CASHH

PA20/CASHL

PA23/WRHH

PA22/WRHL

RES/VPP MDTOVF

MD3 MD2 MD1 MD0

NMI

EXTAL

XTAL PLLVCC PLLCAP

PLLVSS

VCC VCC VCC VCC VCC VCC VCC VCC VCC

VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS

VSS AVCC AVSS

AVREF

PF/AN7

PA17/WAIT

PF5/AN5

PF6/AN6

PA16/AH

P L L

PF3/AN3

PF4/AN4

2) M27C800-90F1 (IC14): pin-42 DIP (ROM)

EPROM of 8M bit equipped with software for the main CPU.

3) W24010S-70LET (IC21): pin-32 SOP (RAM)

Line memory for the main CPU system RAM area and coding/decoding process. Used as the transmission buffer.

Memory of recorded data such as daily report and auto dials. When the power is turned off, this memory is backed up by the lithium battery.

4) HY5118164CJC-6 (IC1 1, IC13, and system control): pin-42

Image memory for recording process.

• Memory for recording pixel data at without paper.

PA2/SCK0/DREQ0/IRQ0

PA0/RXD0

PA3/RXD1

PA1/TXD0

RAM/CACHE

4KB/1KB

DATA TRANSFER

CONTROLLER

DIRECT MEMORY

ACCESS CONTROLLER

BUS STATE

CONTROLLER

MULTI FUNCTION

TIMER PULSE UNIT

PE10/TIOC3C

PE11/TIOC3D

PE8/TIOC3A

PE9/TIOC3B

WATCHDOG

CONVERTER

PE12/TIOC4A

PE13/TIOC4B/MRES

SOJ (RAM)

PB5/IRQ3/POE3/RDWR

PB9/IRQ7/A21/ADTRG

TIMER

PE7/TIOC2B

PB4/IRQ2/POE2/CASH

PB3/IRQ1/POE1/CASL

PB7/IRQ5/A19/BREQ

PB6/IRQ4/A18/BACK

PB8/IRQ6/A20/WAIT

PE2/TIOC0C/DREQ1

PE3/TIOC0D/DRAK1

PE5/TIOC1B

PE6/TIOC2A

PE4/TIOC1A

PB2/IRQ0/POE0/RAS

PB1/A17

PB0/A16

PE1/TIOC0B/DRAK0

PE0/TIOC0A/DREQ0

PC15/A15 PC14/A14 PC13/A13 PC12/A12 PC11/A11

PC10/A10 PC9/A9 PC8/A8 PC7/A7 PC6/A6 PC5/A5 PC4/A4 PC3/A3 PC2/A2 PC1/A1 PC0/A0

PD31/D31/ADTRG PD30/D30/IRQOUT PD29/D29/CS3 PD28/D28/CS2 PD27/D27/DAK1 PD26/D26/DACK0

PD25/D25/DREQ1 PD24/D24/DREQ0 PD23/D23/IRQ7 PD22/D22/IRQ6 PD21/D21/IRQ5 PD20/D20/IRQ4 PD19/D19/IRQ3 PD18/D18/IRQ2 PD17/D17/IRQ1 PD16/D16/IRQ0

PD15/D15 PD14/D14 PD13/D13 PD12/D12 PD11/D11

PD10/D10 PD9/D9 PD8/D8 PD7/D7 PD6/D6 PD5/D5 PD4/D4 PD3/D3 PD2/D2 PD1/D1 PD0/D0

: PERIPHERAL ADDRESS BUS(32BIT) : PERIPHERAL DATA BUS(16BIT) : INTERNAL ADDRESS BUS(32BIT) : INTERNAL HIGH-ORDER DATA(16BIT) : INTERNAL LOW-ORDER DATA(16BIT)

Fig. 3

5 – 2

Page 75

FO-2950MGR/GH/MY/TH

SH7041 (IC5) Terminal descriptions

Classification Code Terminal No. I/O Name Function

Power Vcc 12,26,40, I Power Connect Vcc terminals with the power source for all systems.

Vss 6,14,28, I Ground Connect to the ground.

Vpp I

Clock PLL Vcc 104 I PLL power Power source for the built-in PLL oscillator.

PLL Vss 106 I PLL ground Ground for the built-in PLL oscillator. PLLCAP 105 I PLL capacity External capacity terminal for the built-in PLL oscillator. EXTAL 96 I External clock

XTAL 94 I Crystal Connected with the crystal oscillator. CK 107 O System clock Supplied to peripheral devices.

System control RES 108 I Power-on-reset When impressing low level onto this terminal, power-on-reset

MRES 144 I Manual reset When applying low level to this terminal, manual reset condition

WDTOVF 44 O Watch dog timer Overflow output signal from WDT.

BREQ 33,38 I Bus right demand Low level obtained when external device demands to release

BACK 30,37 O Bus right demand Shows that the bus right has been released to the external device.

Operation MD0~ 95,97 I Mode setting The terminal to determine operation modes. mode control MD3 102,103 Do not change the input value during operation.

Interrupt NMI 98 I Non-maskable Non-maskable interruption demand terminal. Receiving on either

IRQ0 ~ 31,32,34 I Interruption demand Maskable interruption demand terminal. Level input and edge IRQ7 37~39 0 to 7 input can be selected.

IRQOUT 5,46 O Interruption demand Shows that the interrupt factor has occurred.

Address bus A0~A21 7~11,13, O Address bus Outputs address.

63,77,85, If any open terminal remained, operation is impossible.

99,112,135

35,42,55, Connect Vss terminals with the ground for all systems. 61,71,79, If any open terminal remained, operation is impossible.

87,93,117,

129,141

41,51,52

64~69

70,72

132,

136

15~24,25,

27,29,30, 37~39,41

Program power source Connected with the power source (Vcc) for normal operation.

overflow

acknowledge The device outputting signal BREQ can acknowledge the pass

interrupt leading edge or trailing edge can be selected.

output During bus release, interrupt occurred can be known.

In case of PROM mode, apply 12.5 V.

Connected with the crystal oscillator. By EXTAL terminal the external clock can be input.

condition is attained.

is obtained.

the bus right.

right gained by receiving signal BACK.

(Continuing)

5 – 3

Page 76

FO-2950MGR/GH/MY/TH

SH7041 (IC5) Terminal descriptions

Classification Code Terminal No. I/O Name Function

Data bus D0 ~ D15 45,46 O Data bus Bilateral data bus for 16 bit (Pin plate QFP-112 ) or 32 bit (Pin plate

Bus control CS0~CS3 49,50,53 O Chip select 0 to 3 Chip select signals for external memory or device.

Multi function TCLKA 51~54 I MTU timer clock input External clock input terminal for MTU counter.

timer pulse unit TCLKB

Direct memory DREQ0, 60,62,109, I DMA transfer demand Input terminal for external DMA transfer demand.

access control DREQ1 111,132,136 (Channels 0 and 1) (DMAC) DRAK0, 2,30,33,110, O DREQ demand Outputs sampling acceptance of external DMA transfer demand

(QFP-112) 56~60, QFP-144). D0 ~ D31 62,64~70 (QFP-144) 72~76,78

RD 43 O Read-out Shows reading-out from the external device. WRH 47 O Higher side writing Shows writing in higher 8 bits (bits 15 to 8). WRL 48 O Lower side writing Shows writing in lower 8 bits (bits 7 to 0). WAIT 39,101 I W ait To insert wait cycle into the bus cycle when accessing external space. RAS 31 O Low address strobe Timing signal for low address strobe of DRAM. CASH 34 O

CASL 32 O Lower column address Timing signal for column address strobe of DRAM.

RDWR 36 O DRAM read/write Strobe signal for DRAM writing. AH 2,100 O Address hold Address hold timing signal for the device using multiplex bus of

WRHH 1 O HH writing Shows writing of bits 31 to 24 of external data. (QFP-144)

WRHL 3 O HL writing Shows writing of bits 23 to 16 of external data. (QFP-144)

CASHH 4 O HH column address Timing signal for column address strobe of DRAM. (QFP-144) strobe It is output when accessing bits 31 to 24 of data.

CASHL 29 O HL column address Timing signal for column address strobe of DRAM. (QFP-144) strobe It is output when accessing bits 23 to 16 of data.

TCLKC TCLKD

TIOC0A 109~111, I/O MTU input capture/ Channel 0 terminal for inputting Input Capture/outputting Output TIOC0B 113 output conveyer Conveyer/outputting PWM. TIOC0C (Channel 0) TIOC0D

TIOC1A 114,115 I/O MTU input capture/ Channel 1 terminal for inputting Input Capture/outputting Output TIOC1B output conveyer Conveyer/outputting PWM.

TIOC2A 116,117 I/O MTU input capture/ Channel 2 terminal for inputting Input Capture/outputting Output TIOC1B output conveyer Conveyer/outputting PWM.

TIOC3A 138~140, I/O MTU input capture/ Channel 3 terminal for inputting Input Capture/outputting Output TIOC3B output conveyer Conveyer/outputting PWM. TIOC3C (Channel 3) TIOC3D

TIOC4A 2,5,143,144 I/O MTU input capture/ Channel 4 terminal for inputting Input Capture/outputting Output TIOC4B output conveyer Conveyer/outputting PWM. TIOC4C (Channel 4) TIOC4D

DRAK1 113 acceptance (Channels input.

DACK0, 5,58,59 O DMA transfer strobe Outputs strobe to external I/O of external DMA transfer demand. DACK1 (Channels 0 and 1)

80~84

86,88~92

54,56,57

Higher column address strobe It is output when accessing higher eight bits of data.

strobe

(Channel 1)

(Channel 2)

0 and 1)

Timing signal for column address strobe of DRAM.

address/data.

(Continuing)

5 – 4

Page 77

FO-2950MGR/GH/MY/TH

SH7041 (IC5) Terminal descriptions

Classification Code Terminal No. I/O Name Function

Serial TxD0, 131, O Transmitting data Output terminal for transmitting data of SC10 to 1. communication TxD1 134 (Channels 0 and 1) interface (SCI)

A/D converter AVcc 128 I Analog power source Vcc potential is connected by analog power source.

I/O port POE0~ 31,32,34,36 I Port output enable Input terminal to enable general port to control driving of port

RxD0, 130, I Receiving data Input terminal for receiving data of SC10 to 1. RxD1 133 (Channels 0 and 1)

SCK0, 132, I/O Serial clock Input/output terminal for clock of SC10 to 1. SCK1 136 (Channels 0 and 1)

AVss 124 I Analog ground Vss potential is connected by analog power source. AVref 127 I Analog reference Input terminal for analog reference power source.

(QFP-144) power source AN0~AN7 118~123, I Analog input Analog signal input terminal.

ADTRG 41,45 I A/D conversion External trigger input to start A/D conversion.

POE3 terminal in case of setting output. PA0~PA15 1,3,4,33,43, I/O General port

(QFP-112) 47~54,100, PA0~PA23 101,107, (QFP-144) 130~134,136

PB0~PB9 25,27,31,32, I/O General port

PC0~PC15 PD0~PD15

(QFP-112) 73~76,78, PD0~PD31 (QFP-144) 88~92

PE0~PE15

PF0~PF7 118~123, I General port General input port terminal.

125,126

trigger input

General input/output port terminal to specify input/output by every bit.

34,36~39,41 45,46,57~60, I/O General port 62,64~70,72, I/O Genelal port General

80~84,86,

2,5,109~111, I/O General port

113~116 137~140 142~144

125,126

General input/output port terminal to specify input/output by every bit.

General input port terminal to specify input/output by every bit.

input/output port terminal to specify input/output by every bit.

5 – 5

Page 78

FO-2950MGR/GH/MY/TH

(2) Panel control block

The following controls are performed by the Gate array (LR38784).

• Operation panel key scanning

• Operation panel LCD display

(3) ASIC/Printing control block

1) ASIC [LR38784A 208pin (embedded gate array)] functions (IC15)

Mapper Mapping can connect the modem and image handing LSI to a domain of CS2 (Chip Select 2).

Real-time-clock interface This interface has the clock-synchronous type serial transfer mode and can write and read to the CLOCK IC (SM8578BV or NJU6355).

Image handing LSI interface This interface has parallel or serial transfer mode with the image handing LSI.

GDI ASIC This function GDI i/f for PC printing only.

IEEE1284 This function IEEE 1284 i/f for PC scanning and PC fax.

Sending motor control This function outputs the sending motor control signals of 2 or 1-2 phase excitation to the motor driver.

Buzzer and Ringer control This function outputs a buzzer (1042Hz) or a ringer (controlled signal) signal.

Laser signal control This function controls to output laser beam.

Protection circuits LR38784 has protection circuits for a pick-up-solenoid and a heater.

LR38784A (IC15) Terminal description

Pin No. I/O Signal name

1 – GND 2 – GND 3 I LCPD3 4 I LCPD4 5 I LCDREQ 6 TO LEDDV4 7 TO LEDDV3 8 TO LEDDV2

9 TO LEDDV1 10 TO RS 11 O LCDACKZ 12 TO E 13 IOR LD3 14 – GND 15 IOR LD2 16 IOR LD1 17 IOR LD0 18 IU SEN4Z 19 IU SEN3Z 20 IU SEN2Z 21 IU SEN1Z 22 IU SEN0Z 23 I FRSNS 24 I ORGSNS 25 I B4SNS 26 I MDMINTZ 27 O MDMRDZ 28 O MDMWRZ 29 O MDMCSZ 30 O MDMRSTZ 31 – GND 32 IS CK16M 33 O OE3Z 34 O WE3Z 35 O BZOUT 36 I LCINT 37 O LCRDZ 38 O LCWRZ 39 I SD 40 I SDE 41 I SDCK 42 ID MTST 43 I DACK0Z 44 I DACK1Z 45 I DRAK0

5 – 6

Page 79

LR38784A (IC15) Terminal description

Pin No. I/O Signal name

46 I DRAK1 47 O DREQ0Z 48 O DREQ1Z 49 – GND 50 IS SHCK 51 – GND 52 – GND 53 – VDD 54 – VDD 55 O RESET2Z 56 O USOUT 57 O2M INT1Z 58 O INT2Z 59 O2M INT3Z 60 O2M INT4Z 61 O INT5Z 62 I RDZ 63 I WRHZ 64 I WRLZ 65 I CS2Z 66 I CSIZ 67 IS WDTOVFZ 68 O RTCIO 69 O RTCCE 70 – GND 71 O RTCCK 72 IOR RTCDT 73 ID TEST1 74 IU CASHZ 75 IU CASLZ 76 IU RASZ 77 IU RDWRZ 78 O BREQZ 79 I BACKZ 80 IOR PD0 81 IOR PD1 82 IOR PD2 83 IOR PD3 84 – GND 85 OR PA9 86 OR PA0 87 I LCPD0 88 I LCPD1 89 I LCPD2 90 OR PA1 91 OR PA2

FO-2950MGR/GH/MY/TH

Pin No. I/O Signal name

92 OR PA3 93 OR PA4 94 OR PA5 95 – GND 96 OR PA6 97 OR PA7 98 OR PA8

99 IOR PD4 100 IOR PD5 101 IOR PD6 102 IOR PD7 103 – VDD 104 – VDD 105 – GND 106 – GND 107 OSC3M PEPCKO 108 OSCI PEPCKI 109 IU EXINT1Z

110 IS RESETZ 111 O PCASZ 112 O PWRZ 113 O PRASZ 114 O TPA 115 O TPB 116 O TPAZ 117 O TPBZ 118 – GND

119 O OE1Z 120 O WE1Z 121 O OE2Z 122 O WE2Z 123 O CASLOZ 124 O RASOZ 125 O CASHOZ 126 – GND 127 O PWRLY 128 O HLON 129 O TC_BIASON 130 O PUS 131 O MCON 132 I PE 133 O PMDZ 134 O APCSTT 135 ICS SYNCZ 136 O SMAP 137 – GND

5 – 7

Page 80

FO-2950MGR/GH/MY/TH

LR38784A (IC15) Terminal description

Pin No. I/O Signal name

138 – VDD 139 IOR MA 140 IOR MB 141 I DOPZ 142 I PINZ 143 I POUTZ 144 I XBPSTB 145 IO12MR BPBD7 146 O VIDEO 147 – GND 148 IO12MR BPBD6 149 IO12MR BPBD5 150 IO12MR BPBD4 151 – GND 152 IO12MR BPBD3 153 IO12MR BPBD2 154 IO12MR BPBD1 155 – GND 156 – GND 157 – VDD 158 – VDD 159 IO12MR BPBD0 160 I XBPAF 161 O12M XBPOACK 162 O12M BPOBY 163 I XBPINI 164 – GND 165 O12M BPOPE 166 O12M BPOSE 167 O12M XBPOFT 168 I XBPSEI 169 – GND 170 – VDD 171 IS PRTCLK 172 IOR D0 173 IOR D1 174 IOR D2 175 IOR D3 176 IOR D4 177 IOR D5 178 IOR D6 179 IOR D7 180 – GND 181 IOR D8 182 IOR D9 183 IOR D10

Pin No. I/O Signal name

184 IOR D11 185 IOR D12 186 IOR D13 187 IOR D14 188 IOR D15 189 – GND 190 I A21 191 I A20 192 I A13 193 I A12 194 I A11 195 IOR A10 196 IOR A9 197 IOR A8 198 IOR A7 199 IOR A6 200 – GND 201 IOR A5 202 IOR A4 203 IOR A3 204 IOR A2 205 IOR A1 206 I A0 207 – VDD 208 – VDD

5 – 8

Page 81

2) Printing control (PCU)

The CPU and ASIC control printing.

1. Block diagram

Main motor

Heater lamp control circuit

Driver

Motor driver

CPU

(SH7041)

and

ASIC

(LR38784A)

FO-2950MGR/GH/MY/TH

Laser scanning unit

Laser start position sensor

Laser diode

Scanning motor

IEEE1284 I/F Connector

Host

computer

Thermistor

Driver

High voltage generating circuit

Driver

Solenoid

PUS

The PCU controls the following functions and items:

Rotation of the main motor (pulse motor)

High voltage output

Fusing temperature

Optical system (polygon motor/ laser APC circuit start)

400/600DPI resolution automatic selection

Temperature correction of fusing temperature and high voltage output

Driver

Reset circuit

PIN sensor

POUT sensor

PE sensor

Door switch

Fig. 4

5 – 9

Page 82

FO-2950MGR/GH/MY/TH

3) Unit control

a. Main motor drive circuit

This machine uses the 4-phase pulse motor, and is driven by the following pulses and the circuit

24VP

IC2

VBB

ENABLE1

ENABLE2 OUT1 OUT2 OUT3 OUT4

( Printer PWB)

MA MAMB MB-

CNMMT

1 2 3 4

(Drive waveform)

Stop Rotation

MCA

MCB

MEN-

Fig. 5 b. Paper feed controller Basically, the feed roller is rotated 1.5 times.

If interval between PUS and PIN is within 0.5 sec., it is rotated 1 time. The procedure of clutch control

Timer is cleared by PUS ON according to clutch control demand.

PUS OFF 100 ms after PUS ON

PUS ON again 450 ms after the procedure 1 above.

If paper is remained in PIN 500 ms after the procedure 1, the third

PUS ON is stopped.

PUS OFF 1.25s after the procedure 1. Clutch control demand OFF

if additional control is cancelled.

PUS ON again 1.534s after the procedure 1.

PUS OFF 2.334s after the procedure 1.

Clutch control demand OFF 3.366s after the procedure 1.

If the paper is not fed normally and the paper in detector signal (PIN_) is not outputted even with the above operation, the PCU judges it as a paper jam display is made.

The paper in detector signal (PIN_) is used for the top margin control signal in addition to jam detection.

The diagram below shows timings of clutch operation.

PUS

0.1

0.45

0.8

1.534

0.8

IN1

IN2

14 7

MA MEN-

116

137

( Control PWB)

IC5

c. Electrical connection

In the paper feed and transportation system, drive parts and sensors are connected as shown in the figure below.

CPU

(SH7041)

ASIC

(LR38784A)

CONTROL PWB

116 MA 60 MEN137 MB

130 PUS

142 PIN- 3

143 POUT- 3

132

CNPRT

PRINTER PWB

7,14

IC2 Motor

driver

413

IC1

PI2

PI1

+5V

1 17 4 2

+24V

PAPER IN SENSOR

+5V

PAPER OUT SENSOR

CNMMT

MA1 MA-2 MB3 MB-4

CNPL

+24V1

PUS-2

CNLSU

PAPER PICK-UP SOLENOID

PE9

MAIN MOTOR

LSU PWB

CN601

PE9

+24V

PD601

PAPER EMPTY SENSOR

Fig. 7

• The main motor, which is the drive source for the paper feed and transportation system, is a 4-phase stepping motor in 2-phase excitement bipolar system, The step angle is 7.5°.

• The pick-up solenoid operates on 24V to turn on/off paper feed.

• There are following kinds of sensors.

Paper empty sensor (Transmission photo transistor) :

The paper empty sensor is positioned on the LSU PWB, and is used to detect presence of paper on the multi-purpose paper tray.

Paper in sensor: (Transmission photo transistor):

This sensor is used to detect the paper feed timing of the next paper (in prefeed) and to make synchronization between paper transport and image forming on the drum. This sensor is also used to detect paper jams.

Paper out sensor: (Transmission photo transistor):

This sensor senses paper exit, and paper jam.

0.5

0.5 1.25 1.534

0.991

2.334

Fig. 6

3.366

5 – 10

Page 83

d. High voltage unit control

The high voltage unit outputs the following voltages:

• Main charger voltage (DC-950V + AC600V peak to peak)

• Transfer charger voltage (DC+2100V + AC600V peak to peak)

• Developing bias voltage (DC-390V) The following signals are outputted from the CPU (ASIC) to control the

above voltages.

• MCON This signal is to turn on/off the main charger. When this signal is outputted, Q7 is driven to the high impedance state.

Then Q9 conducts to drive transformer T2. As a result, the main charger voltage is outputted to the secondary

side of the transformer.

• TC/BIASON This signal is to turn on/off the transfer charger and the developing

bias voltage. When this signal is outputted, Q3 is driven to the high impedance state.

Then Q5 is conducted to drive T1 to output the transfer charger voltage and developing bias voltage to the secondary side of the transformer.

• PWMSIN This signal is to control the main charger voltage and the transfer

charger voltage. The PWM pulse of 295.28Hz is outputted. This pulse waveform adds the AC component to the main charger volt-

age and the transfer charger voltage. By changing the pulse duty of this signal, the main charger voltage

and the transfer charger voltage are controlled (during temperature correction operation).

When the pulse duty of this signal is changed, the collector currents of Q4 and Q8 are changed. Therefore, the base current of Q9 and the drive current of transformer T2 are changed to change the main charger voltage and the transfer charger voltage.

R29, R31, C19, and C20 from a filter circuit which dulls the waveform of PWMSIN signal.

FO-2950MGR/GH/MY/TH

e. Electrical connection

CONTROL PWB

ASIC

IC15

(LR38784A)

CPU

(SH7041)

131 MC

TC/Bias ON

129

PW MSIN

115

PRINTER PWB

ON 5 12

Driver

IC1

314

Q9 Q8

+24VP

Q3 Q5

Transformer

DC Bias

Charger roller

OPC DRUM

Separation electrode

Transfer roller

100V

Doctor

Supply rollier

Developing roller

CNPRT

Fig. 8

5 – 11

Page 84

FO-2950MGR/GH/MY/TH

f. Laser scanning unit

This unit controls the laser beam power and laser beam scanning. The control is performed with the signals inputted outputted to or from

the CPU and ASIC.

R609 10K

R606 10K

R603 30K

D601 PD481PI

So6Vcc7Vps

INH

+5VL

GND

Q601 A1015

R604 820

R605 240

IC601 IR3C07

OUT

1 2 3

Q602 C1815

BD CIRCUIT

CN604

+5VL

SYNC-

GND

APC CIRCUIT

C607 2200p

C606

220uF/10V

IC603

O/I

BU4S66

+5VL

Vdd5CONT

CN603

SYNC-

GND

+5VL

GND

I/O

IC602

R607 1K

C602

0.1uF

VR601 15K

LDPD

LNC702

7805

OUT

+5VL+5VL

D602

GND

R613 180

R610

9.1 Q603

A1206

+5VL

1 2

C608 4700p

R608 30

C605

0.1uF

C601

47uF/10V

R601

130ohm/2W

C603

0.1uF

R611 750

R612 510

PD601 GP1S53

+24V

1 2 3 4 5 6 7 8 9

1 2 3 4 5

CN601

LSU

CN602

+24V GND VIDEO SAMP SYNCAPCSTT PMCLK PMDPE

GND PMD+24V PMCLK GND

1) Signal functions

PMCLK

Clock signal for driving the scanning motor. (1.77KHz)

PMD

Scanning motor ON/OFF signal.

APCSTT

Used to start the laser beam generation circuit.

SYNC

This signal is outputted when the laser beam scanned by the laser

beam sensor signal is sensed by sensor (Photo diode D601).

Used for the left margin control.

VIDEO

This signal is used to control the laser diode emitting. Not only when the laser beam is emitted to perform the LEND proc-

ess, but also when the laser beam is emitted as image data, ASIC controls and the signal is outputted from video terminal.

Fig. 9

2) Laser beam power control

The laser beam power is controlled in the laser emitting unit PWB. This circuit functions to keep the laser beam output power at a constant

level. The laser beam output is monitored with photo diode D602 for monitor.

When the laser beam output rises above the specified value, the impedance of photo diode D602 is decreased to decrease the monitor input (3PIN) voltage of the laser diode control IC (IC601).

Then the laser diode (LTO28GS) drive voltage is decreased to decrease the laser beam output to the specified level.

When the laser beam output is decreased below the specified level, the contrary operation are performed.

5 – 12

Page 85

FO-2950MGR/GH/MY/TH

3) Starting operation

Warm-up operation of laser scanning is described below. The operation is made when the cover is closed from the open state,

and is made before starting printing. The PMCLK signal is the clock signal for scanner motor speed control.

It is rectangular waveform of 1.18kHz.

The PMD_signal is to turn on/off the scanner motor . When this signal

is outputted, the scanner motor is operated.

After 2 sec of starting the scanner motor, the laser power control

signal APCSTT and the laser diode ON signal VIDEO (LEND) are outputted to output laser beams.

After 0.5sec from outputting the VIDEO (LEND) signal and turning

on the laser diode, the LEND process operation is started.

Clock of 1,18KHz is always outputted.

0.5sec

After about 0.5sec of turning on the LEND_ signal, the LEND process is started.

PMCLK

PMD_ (Scanning motor)

APCSTT (Laser power control)

LEND_

Stop

Start

2.0sec

Fig. 10

4) LEND process operation

The LEND process operation means outputting the HSYNC (HSYNC_) signal for left margin control.

To control the left margin, the scanning position of the scanning mirror on the virtual area of the left side out of the margin must be precisely detected when the scanning motor reaches the stable rpm. Therefore, the dummy laser beam must be outputted to detect the position.

The laser beam scanning position is detected by the laser beam sensor, and the SYNC signal is outputted.

The dummy laser beam is outputted for every scanning of one line only when the scanning position of the scanning mirror is outside the left area of virtual paper. (The laser is forcibly turned on by the PCU when the laser beam scanned by the scanning mirror come in front of the laser beam sensor (left margin reference).)

Note: The laser beam is not outputted continuously during printing op-

eration of one paper. It repeated ON and OFF for every scanning of one line. The laser beam is outputted only when the LEND process for controlling the print left margin is made and when the print image is drawn on the photoconductor.

• Laser control signal LEND signal is controlled based on HSYNC signal. For simultaneous APC control, SAMP signal is also controlled. These timings are made by ASIC. The line-end-of f section is set by the

SYNC

VIDEO

SAMP

LEND_

1st dot 2nd dot last dot

1 line data

2 µs

Line end off

Keep low level.

Next line

2 µs

Fig. 1 1

When the LEND_ signal is on, the dummy laser beam is outputted, and the scanned laser beam is detected by the laser beam sensor to output the SYNC signal. When the SYNC signal is outputted, the CPU detects the scanning position.

At the rising of the SYNC signal, the CPU turns off the LEND_signal. By this, the dummy laser beam is turned off. When the CPU detects the scanning position with the SYNC signal, the dummy laser beam becomes unnecessary.

The draw signal Video_ is made from the DDA TA_ signal of one line outputted from the ASIC. When it is outputted, the laser beam is turned on off accordingly. This corresponds to the making of latent electrostatic images on the photoconductor drum.

When making of latent electrostatic images for one line is completed, the CPU turns on the LEND_ signal before the output timing of the SYNC.

Procedures 1~4 are repeated.

Time

Resolution

600dpi 846.7µs

406.4x

ABCD

1298.7524µH

3 ~ 10µSec

4.6 ~15.3µSec

(29.97µSec) (45.971µSec)

(84.3nSec) 720µs (190.907nSec)

Line end off

510µs

391.16dpi

5) Automatic acknowledgment of resolution

The CPU control 600dpi/400dpi when starting the LEND process. When the scanner motor rotation is stabilized, the SYNC interval is

judged.

5 – 13

Page 86

FO-2950MGR/GH/MY/TH

g. Electrical connection

CONTROL PWB PRINTER PWB

ASIC

(LR38784A)

136 SAMP 146 VIDEO

SYNC-

135 134 APCSTT

133 PMD-

CPU

(SH7041)

SYNC-

114 PMCLK

CNPRT

+24V

CNLSU

+24V1 DG

VIDEO

SAMP

SYNC-

APCSTT

PMCLK

PMD-8

CN601

+24V1 DG

VIDEO

SAMP

SYNC-

APCSTT

PMCLK

PMD-8

(APC circuit)

GND

+5VL

LSU PWB

IC603

3-terminal regulator

CN603

+24V

CN602

2 3 4 5GND

Q603

INH

OUT

VPS

VR601

IC601

VCC

SYNC_

PMD-

PMCLK

LD /PD

Laser beam detecting PWB (Start position detecting PWB)

CN604

+5VL1

GND3

GND1

+5VL1

SYNC_

GND3

Scanning motor

+24V

The laser diode control board is driven in synchronization with the VIDEO signal sent from the CPU board.

By the operation of the laser diode control board, infrared laser beams of 780nm are outputted from the laser diode and made in parallel by the collimator lens, and focused onto the scanning motor by the first cylinder lens.

The scanning mirror rotation is controlled by the scanning motor to be constant at 11811rpm (600dpi) and 8000rpm (400dpi), and the laser beam is directed to the main scanning direction.

The scanning motor is of six-surface, and six-line print is made for one rotation of the scanning motor. The laser beam reflected by the scanning mirror is directed to the curved mirror by the first reflection mirror. Before reaching the curved mirror, the laser beam enters the photo sensor on the start position detector board, making vertical synchronization and print data synchronization (generating the SYNC signal).

The curved mirror directs the laser beam to the second reflection mirror in parallel and in even interval regardless of difference in angles of incidence from the first reflection mirror. The laser beam reflected by the second reflection mirror ia passed through the second cylinder lens to reach the photoconductor drum.

The second cylinder lens corrects blur of the images caused by variations in the installing angle due to the two-surface scanning mirror, providing stable laser beams to the photoconductor drum for each line.

GND O/I

CONT

IC603

I/O

VDD

Fig. 12

h. Fusing unit control

The fusing section is heated by the heater lamp (400W). The heater lamp is controlled (turned on/off) to keep the optimum temperature. The following signals are outputted by the ASIC and CPU for control.

1) Signal functions

• HLON

This signal is to turn on/off the heater lamp. When this signal is outputted, photo triac PD101 turns on to turn on triac T2. Then an AC power is supplied to the heater lamp to turn on the heater lamp.

• RTH

This is the output signal of the thermistor which detects the surface temperature of the heat roller. It is inputted to the CPU. The heater lamp is turned on/off depending on the value of RTH voltage.

5 – 14

Page 87

FO-2950MGR/GH/MY/TH

2) Protect against overheat

Though the heater lamp ON signal (HLON) is normal, if triac PD101 and T2 are kept ON, overheat may result.

To prevent against this, temperature fuses are used. When the fusing roller surface temperature exceeds about 187 degrees

C, the temperature fuse blows off to open the 12V power line which drives the power relay RY101, opening the power line for the photo triac PD101 and triac T2. Therefore, the power is not supplied to the heater lamp.

A temperature fuse is also provided in the heater lamp power line. In case of overheating, the heater lamp power line is opened directly.

3) Timing of temperature detection and heater control

As shown by the following timings, four values of software thermistor voltage are input as A/D conversion values. The mean value of two medians among these four is regarded as the newest thermistor value (temperature).

• The value is compared with the temperature (155°C) control value every 100 ms.

• If the value is higher than 155°C, the heater becomes OFF. If lower, the heater becomes ON.

• The heater ON timing is in accordance with the timing of Power Zero Cross interrupt.

Heater ON/OFF Control

• After printing, temperature is not controlled.

• Fan motor starts revolving from the beginning of temperature control

and stops 120 seconds after printing is finished.

T emperature control is not started from the start of printing because the first copying time should be within 28 seconds.

HLON

FAN

CDPAGE

(Base machine Printing started)

In case of the base machine printing (Single sheet continuous printing)

155°C

Preparation of printing data started

Temperature control started

Printing started

Printing finished

120s

OFF

Fig. 14

T (x 10ms)

Inputting thermistor values

Timings of thermistor value input and heater control

Fig. 13

4) Heater control (Temperature control)

Control method

Base machine printing (Copy, List, Receiving)

• Temperature control is started when data to be printed are produced

(or when slips are to be prepared).

• Temperature is controlled at 155 °C. (Heater OFF over 155 °C. Heater

ON below 155 °C.)

• After printing, temperature is not controlled. (Heater is not turned

ON.)

• Fan motor starts revolving from the beginning of temperature control

and stops 120 seconds after printing is finished.

PC printing

• Temperature control is started when PC starts printing.

• Temperature is controlled at 155 °C. (Heater OFF over 155 °C. Heater

ON below 155 °C.

Printing started

HLON

FAN

CDPAGE (PC printing started)

In case of PC printing (Single sheet/continuous)

155°C

The Heater ON timing is set during Zero Cross interrupt.

Printing finished

Temperature control started

120s

Fig. 15

OFF

5 – 15

Page 88

FO-2950MGR/GH/MY/TH

i. Electrical connection

Heater lamp: The 400W halogen lamp is used.

Thermistor: Thermistor of chip type with good response is

T emperature fuse 1 T emperature fuse 1 is installed to the fusing cover. (132°C): It blows off when the ambient temperature of the

Temperature fuse 2 Temperature fuse 2 is in close contact with the (187°C): heat roller. It blows off when the heat roller tem-

This spring presses the pressure roller with a 690g pressure on one side.

used to respond to rapid heating (rapid warm-up of about 8 sec) of the heat roller.

fusing cover rises abnormally (132°C).

perature rises abnormally high (187°C).

ASIC

(LR38784A)

CPU

(SH7041)

CNPRT

PRINTER PWB POWER PWBCONTROL PWB

131 HLO

127 PWRLY 1 16

118

N 2 15 HLON-

IC1

Driver

RTH

+5V

+24V+24VS

PWRLY-

CNRTH

+5V1

2 RTH

CNFUSE

+24V1

3 +24VS

CNPW

CNLN

ACL1

2ACN

CNHT

HLL1

Temperature fuse (132 °C)

HLN3

Heater lamp

Thermistor

Temperature fuse (187 °C)

• The heat roller surface temperature is maintained to the optimum level by controlling ON/OFF of the heater lamp according to the temperature data (voltage) from the thermistor. The heat roller surface temperature is controlled to 155°C. Two temperature fuses are provided to protect the heat machine from an abnormally high temperature in the fusing section. The heater lamp is lighted by the AC power.

Fig. 16

5 – 16

Page 89

FO-2950MGR/GH/MY/TH

j. Timing chart

• Printing process Pre-revolution processing Timing from DPAGE (internal signal of ASIC) to BIAS ON (pre-revolu-

tion processing) is specified.

Before rotation of printing (unit:sec)

PMD

APCSTT

LEND_

HSYNC_

LDATAEN

LD_

0.7

1.03

68%DC ON

unit(µs)

44%DC ON

AC SIN

0.98

ACSIN

TC/Bias

HLON

DREADY_

DPAGE_

AC 68%

AC 44%

143.9

93.1

3.5

211.7

Fig. 17

Laser control becomes hard control from the movement when HSYNC interruption was permitted.

Post-revolution processing Timings from POUT to motor stop (post-revolution processing for print-

ing) are specified.

After rotation of printing (unit:sec)

PMD

APCST

LEND

HSYNC_

LDATAEN

LD_

Sine wave form output

ACSCN

TC/Bias output

POUT

DREADY

DPAGE

Harf line discharge(20Line)

0.47

Harf line discharge(20Line)

TC output

0.54

Cleaning

OFF

After rotation of printing

50% DC ON

4.8

68% DC ON

0.5

OFF

3.0

OFF

STOP

OFF

Continuous printing processing *1 Waiting according to fixing temperature (Environmental tempera-

ture) *2 Top margin

READY

DPAGE

VSYNC

PRSTT

PMD

APCSTT

LEND

HSYNC

LDATAEN

LD_

MCON

ACSIN

Tc/BiasON

PUS

POUT

3.5

Min1.0(*1)

Before rotation of printing

1.25Typ.

4.0mm(*2)

0.28

0.68

(Letter Size)

(0.5)

0.54

After rotation of printing

3.0

Fig. 19

Revolution before cleaning when power is on and cover is closed Unit: second

PMD

APCSTT

LEND_

HSYNC_

LDATAEN

LD_

ACSIN

TC/Bias output voltage

TC/Bias

HLON

DREADY_

DPAGE_

3.5

5.6

LEND_ Hard control start

1.0

OFF

68%DC ON

LEND_ Hard control end

Generation

(5.0)

OFF

Cleaning

3.0

OFF

Fig. 20

Fig. 18

5 – 17

Page 90

FO-2950MGR/GH/MY/TH

k. Top margin control

T op margin is set according to the number of lines (the number of HSYNC interrupt) from detail paper Pin On to LASER input.

The interval between Pin On and point D is 52.6747 mm. The interval between Point D and point B is: 27.33 (C-D) + 8.3769 (B-C)

= 35.7069 mm If top margin is 4 mm,

52.6747 - 35.7069 + 4 = 20.9678 m In case of the actual software processing, chattering of the sensor is

considered to be observed for 9 msec. The processing speed is 50 mm/sec; while chattering is being observed,

paper is fed by 0.45 mm (9 x 50/1000 = 0.45 mm). In order to gain top margin of 4 mm, printing data should be processed

after paper is fed by 20.5178 mm (20.9678 – 0.45 = 20.5178 mm) following PIN On detection.

The base machine resolution in the sub-scanning direction is 391.16 dpi; If the value 20.5178 mm is converted into the number of lines, 315.9 lines are obtained from 391.16 x 20.5178/25.4. Accordingly the software set value is considered to be based on 316 lines.

Similarly, considering from the fact that resolution of PC printing is 600 dpi, the number of lines is 484.6 lines (600 x 20.5178/25.4=484.6). The software set value is based on 485 lines.

Process speed 50mm/sec

OPC drum

Diameter ø24mm

LASER

OPC drum speed 49mm/sec=(50x0.98)

8.3769mm(B-C)

52.6747mm(from Pin On)

40.0697mm(from Pin Off)

27.33mm(C-D)

Developing roller

nip 2.7693mm

Paper feed roller

37.2mm (until Pin On)

Pin sensor

Pout sensor

Paper exit roller

Discharge brush

nip 5.7523mm

Fusing

9.3389mm(A-B)

30.3522mm(D-A)

Transfer roller

ø13.4(13.7)

100.4mm(from Pin On)

123.8410mm(from Pin On until Pout On)

207.875mm(from Pin Off)

Fig. 21

l. Modem (FM214) block INTRODUCTION

The conexant FM214 MONOFAX modem is a synchronous 14400 bits per second (bps) half-duplex ,modem with error detection and DTMF reception. It has low power consumption and requires +5V, +3.3V DC power supply. The modem is housed in a signal VLSI device package. The modem can operate over the public switched telephone network (PSTN) through line terminations provided by a data access arrangement (DAA). The FM214 is designed for use in Group 3 facsimile machines. The modem satisfies the requirements specified in CCITT recommendations V.29, V.27 ter, V.21 Channel 2 and T.4, and meets the binary signaling requirements of T.30. The modem can operate at 14400, 9600, 7200, 4800, 2400, or 300bps, and also includes V.27 ter short training sequence option. The modem can also perform HDLC framing according to T .30 at 14400, 9600, 7200, 4800, 2400, or 300 bps. The modem features a protectors which operate concurrently with the V.21 channel 2 receiver. The voice mode allows the host computer to efficiently transmit and receive audio signals and messages. General purpose input/output (GPIO) pins are available for host assignment in the 128 pin PQFP. The modem’s small size, single voltage supply , and low power consumption allow the design of compact system enclosures for use in both office and home environments. MONOFAX is a registered trademark of conexant systems, Inc.

FEATURES

• Group 3 facsimile transmitting/receiving

- ITU-TV. 17, V. 33 (Model FM214)

- ITU-TV. 29, V. 27 ter, T.30, V. 21 channel 2, T.4

- ITU-TV. 17 and V. 27 ter short train

- HDLC framing at every speed

- Receiving dynamic range: 0 dBm to -43 dBm

- Automatic adaptation equalizer

- Fixed/programmable digital equalizer

- DMTF detection and tone detection

- ITU-TV, 21 channel 2 FSK 7E flag detection

- Ring detector

- Programmable transmission level

- Programmable single/dual tone transmission

• Room monitor

- DTMF detection, tone detection and tone transmission

- Type II transmitter ID CAS detection

- Near-end echo cancellation

- Monitor recording /message reproducing by voice or audio codec

• V.23 and Type I transmitter ID

- Duplex mode TX = 75 bps, RX = 1200 bps TX = 1200 bps, RX = 75 bps

• Half duplex mode TX = RX = 1200 bps

- Serial/parallel data mode

- Programmable parallel data mode

- Data bit 5, 6, 7, or 8

- Stop bit 1 or 2

- Mark, space, even number and odd number parity

- Break function

- Transmitter sequence routine

- Fixed equalizer

• Programmable interface memory

• General input pin (GPI) 8 and general output pin (GPO) 8

• DTE interface: 2 ports

- Selective microprocessor bus (6500 or 8085)

- ITU-T V. 24 (EIA/TIA-232-E interchangeability) interface

• TTL and CMOS interchangeability

• 3.3V/5V performance

• Consumption power

- Operating mode: 200 mW (standard), 275 mW (-V option), 300 mW (-S option)

- Sleep mode: 1 mW (-V option, -VS option)

• Package

- 128 pin TQFP

5 – 18

Page 91

FO-2950MGR/GH/MY/TH

FM214 (IC8) Terminal description

PIN I/O Signal Function

1MI 2MI 3 OA EYESYNC Eye Pattern Circuit 4 OA EYECLK Eye Pattern Circuit 5 OA RXD DTE serial interface 6 MI SR1IO Modem Interconnect 7 – NC No Connection 8 OA EYEXY Eye Pattern Circuit

9 MI SR4OUT Modem Interconnect 10 PWR VDD1 11 OB PLSD# DTE Serial Interface 12 OB DCLK DTE Serial Interface 13 IA EN85# Host Parallel Interface 14 IA GPI0 Host Parallel Interface 15 IA RTS# DTE Serial Interface 16 GND DGND1 DSP Digital Ground 17 IA TXD DTE Serial Interface 18 MI SA1CLK Modem Interconnect 19 IB RS4 Host Parallel Interface 20 IB RS3 Host Parallel Interface 21 IB RS2 Host Parallel Interface 22 IB RS1 Host Parallel Interface 23 IB RS0 Host Parallel Interface 24 I YCLK 25 MI IACLK Modem Interconnect 26 MI IA1CLK Modem Interconnect 27 MI CTRLSIN_S/NC Modem Interconnect 28 MI RESERVED/NC Modem Interconnect 29 MI SOUT_S/NC Modem Interconnect 30 MI SIN_S/NC Modem Interconnect 31 MI FSYNC_S/NC Modem Interconnect 32 MI IARESET_S#/NC Modem Interconnect 33 GND AGND1 IA Analog Ground 34 I LINEIN_S/NC Line Interface 35 I MICP_S/NC Microphone Input 36 I MICM_S/NC Microphone Input 37 O MICBIAS_S/NC Microphone Bias Output 38 – NC No Connection 39 – NC No Connection 40 MI VREF_S/NC Modem Interconnect 41 MI VC_S/NC Modem Interconnect 42 PWR VAA_S/NC 5V IA Analog power 43 O LINEOUT_S/NC Line Interface 44 – NC No Connection 45 GND AGND2 IA Analog Ground 46 O SPKRP_S/NC Speaker Interface Output 47 O SPKRM_S/NC Speaker Interface Output 48 PWR AVDD_S/NC 3.3V IA Digital power 49 MI RESERVED/NC Modem Interconnect 50 MI ICLK_S/NC Modem Interconnect 51 MI MCLK_P Modem Interconnect 52 MI CTRLSIN_P Modem Interconnect 53 MI RESERVED Modem Interconnect

SR41N/RESERVED SR3OUT/RESERVED

Modem Interconnect Modem Interconnect

3.3V DIGITAL SUPPLY for DSP.

PIN I/O Signal Function

54 MI SOUT_P Modem Interconnect 55 MI SIN_P Modem Interconnect 56 MI FSYNC_P Modem Interconnect 57 MI IARESET_P# Modem Interconnect 58 GND AGND3 IA Analog Ground 59 – NC No Connection 60 I LINEIN_P Line Interface 61 I MICP_P Microphone Input 62 I MICM_P Microphone Input 63 O MICBIAS_P Microphone Bias Output 64 – NC No Connection 65 NC NC No Connection 66 MI VREF_P Modem Interconnect 67 MI VC_P Modem Interconnect 68 PWR VAA_P 5V Analog Supply for IA 69 O LINEOUT_P Line Interface 70 GND AGND4 IA Analog Ground 71 O SPKRP_P Speaker Interface Output 72 O SPKRM_P Speaker Interface Output 73 PWR AVDD_P 3.3V Digital power for IA 74 – NC No Connection 75 MI ICLK_P Modem Interface 76 MI MCLK_S/NC Modem Interface 77 PWR VDD2 3.3V Digital Supply for DSP 78 IB/OC D7 Host Parallel Interface 79 IB/CC D6 Host Parallel Interface 80 IB/OC D5 Host Parallel Interface 81 IB/OC D4 Host Parallel Interface 82 IB/OC D3 Host Parallel Interface 83 IB/OC D2 Host Parallel Interface 84 GND DGND2 DSP Digital Ground 85 PWR VDD3 3.3V Digital Supply for DSP 86 IB/OC D1 Host Parallel Interface 87 GND DGND3 DSP Digital Ground 88 IB/OC D0 Host Parallel Interface 89 IB CSBR# Host Parallel Interface 90 IB WRITE# Host Parallel Interface 91 IB CS# Host Parallel Interface 92 IB READ# Host Parallel Interface 93 IA GPI2 General purpose input 94 IA GP13 General purpose input 95 IA GP14 General purpose input 96 IA GP15 General purpose input 97 IA GP16 General purpose input 98 IA GP17 General purpose input

99 OC GPO7 General purpose input 100 PWR VDD4 3.3V DSP Digital Power 101 OC GPO6 General purpose output 102 OC GPO5 General purpose output 103 MI RESERVED Modem Interconnect 104 OC GPO4 General purpose output 105 OC GPO3 General purpose output 106 GND DGND4 DSP Digital Ground 107 OB CTS# DTE Serial Interface

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FO-2950MGR/GH/MY/TH

FM214 (IC8) Terminal description

PIN I/O Signal Function 108 OB IRQ1# Interrupt request 109 OC GPO2 General purpose output 110 OC GPO1 General purpose output

111 OC GPO0 GPO0 (IA reset) 112 PWR VDD5 3.3V DSP Digital Power 113 PWR VGG 5V DSP Digital 114 GND DGND5 DSP Digital Ground 115 IB RESET# External reset 116 I XTALI Crystal in 117 O XTALO Crystal out 118 MI RESERVED Modem Interconnect 119 OB XCLK X clock output 120 IA GPI1 General purpose input 121 OA IRQ2# Interrupt request 122 MI SR3IN Modem Interconnect 123 MI RESERVED Modem Interconnect 124 MI RESERVED Modem Interconnect 125 GND DGND6 DSP Digital Ground 126 PWR DVAA 3.3V DSP analog power 127 GND AGND5 DSP Analog Ground 128 MI RESERVED Modem Interconnect

Note:

I/O:

MI = Modem interconnect IA, IB = Digital input OA, OB, OC = Digital output I = Analog input

O = Analog output –P signal: Primary IA _S signal: Secondary IA Reserved = Not connect

o. Adjustment of voice/ringer volume

The voice/ringer volume can be adjusted by using the panel buttons “UP” and “DOWN”.

• The ringer volume can be adjusted in the Stand-by mode by pressing the UP/DOWN button.

• The reception level can be adjusted by pressing the UP/DOWN button when the handset is located in the off-hook state.

• The speaker volume can be adjusted by using the speaker key.

m. Image signal process block

LOCAL

CIS

VIDEO

SIGNAL

CLOCK

BUS

LC82103

(IC4)

VREF+ VREF–

ASIC

Fig. 22

The CIS is driven by the LSI (LC82103), and the output video signal from the CIS in input into the LC82103. The ADC and buffer are provided in the LC82103, and the digital image processing is performed.

n. Speaker amplifier

The speaker amplifier monitors the line under the on-hook mode, outputs the buzzer sound generated from the SH7041, ringer sound, DTMF generated from the modem, and line sound.

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Page 93

[3-1] Circuit description of TEL/LIU and

Hook SW PWB (GR/GH/MY)

1. TEL/LIU block operation description (1) Block diagram

FO-2950MGR/GH/MY/TH

SHUNT

LINE

EARTH

SHUNT

EXT.

TEL

EARTH

E-RLY

SURGE

PROTECTION

1 0

TAX PULSE FILTER

CURRENT DETECTOR

CONTROL PWBLIU PWB

CML

0 1

TXOUT

1 0

DI DETECTOR

1 0

0 1

RXIN EXTSIG MPXA CI MPXB MPXC HS TELMUTE2 TELMUTE RHS

RCVOL RCVOL

+5V

+24V

GAINC

0 1

BZCONT

1 0

BZOUT01

VOLA

VOLB

VOLC

SIGTX

SIGRX

TELOUT

SPOUT

BZOUT

PA23

PE10

PE11

PE12

PE13

PF1

PF2

PF3

MODEM (FM214)

G.A.

(LR38784)

PA0

PA1

PA2

PA3

PA4

PA5

PE8

SH2

(7041)

PE9

(2) Circuit description

The TEL/LIU PWB is composed of the following 9 blocks.

1. Surge protection circuit

2. On-hook status detection circuit

3. Dial pulse generation circuit

4. CML relay

5. Matching transformer

6. Hybrid circuit

7. Signal selection

8. CI detection circuit

9. Power supply and bias circuit

(3) Block description

1) Surge Protection circuit

This circuit protects the circuit from the surge voltage occurring on

the telephone line.

• The VA2 protects the circuit from the 300V or higher line surge voltages.

• The AR1 and AR2 protect the circuit from the 500V or higher vertical surge voltage.

Fig. 23

2) On-hook status detection circuit

The on-hook status detection circuit detects the status of the hook

switch (RHS) of built-in telephone, and the status of the hook of a telephone externally connected.

• The status of on-hook switch (RHS) is determined from the logical level of RHS signal. (RHS is in the hook SW PWB)

RHS LOW: ON-HOOK RHS HIGH: OFF-HOOK This circuit comprises the photo-coupler PC4, resistors R7 and R8. When the line is looped and enters the on-hook mode, the LED of

photo-coupler PC4 emits light and the light receiving element turns on. The status signal HS is input to the pin119 of (SH7041) (IC5:

control PWB). HS LOW: LINE LOOP HS HIGH: LINE UNLOOP

3) Dial pulse generation circuit

The pulse dial generation circuit comprises the photo-coupler

PC1,PC2 and the CML relay.

4) CML relay

The CML relay switches over connection to the matching transformer

T1 while the FAX or built-in telephone is being used.

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FO-2950MGR/GH/MY/TH

5) Matching transformer

The matching transformer performs electrical insulation from the telephone line and impedance matching for transmitting the TEL/FAX signal.

6) Hybrid circuit

The hybrid circuit performs 2-wire-to-4-wire conversion using the IC102 of operational amplifier, transmits the voice transmission signal to the line, and feeds back the voice signal to the voice reception circuit as the side tone.

7) 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 H: CML-ON

SP MUTE H: Muting (Power down mode)

TEL MUTE H: Muting

VOL A VRSEL1 VRSEL2 matrix VOL B VOL C

(The circuit is located

in the control PWB.)

GAIN-C Reception gain switching signal

(The circuit is located L: When connected to line, 1: 1 gain

in the control PWB.) H: When not connected to line, HIGH gain

BZCONT Speaker output signal switching

(The circuit is located H: Buzzer signal output

in the control PWB.) L: When monitoring line signal

MPXA TXOUT mute signal

DPON H: Active choke ON

(MPXB) L: Active choke OFF

DPMUTE H: DPMUTE ON

(MPXC) L: DPMUTE OFF

E-RLY H: E-RLY ON

(TELMUTE2) L: E-RLY OFF

Line connecting relay and DP generating relay L: CML-OFF

Speaker tone mute control signal L: Muting cancel (Normal operation)

Handset reception mute control signal L: Muting cancel

Speaker volume control signal

VOL A VOL B VOL C

RING./

Receiving

Buzzer DTMF

H L L High — High L H L Middle — Middle L L H Low — Low L L L — Fixed —

H: During reception, transmission

mute, (during stand by)

L: Signal sending, when transmission

[Signals for status recognition according to input signals]

Signal Name Function

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

(On the HOOK-SW PWB)

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

TEL OUT Transfer signal to line

TXOUT

RXIN

Transmission (DTMF) analog signal output from modem Reception (DTMF, others) analog signal into modem

No. Signal Name (CNLIU) No. Signal Name (CNLIU)

1 +24V 7

RHS 2 DG 8 TXOUT 3 +5VA 9 RXIN 4 CML 10 TELMUTE 5

CI 11 TELOUT

6 HS 12 TELIN

No.

Signal Name (CNHS 1 and 2)

1 RHS 2

No.

Signal Name (CNHS 1 and 2)

8) CI detection circuit

The CI detection circuit detects the CI signals of 15.3 Hz to 68 Hz. A CI signal, which is provided to the photo-coupler PC1 through the C9 (0.47 uF), R4 (47 K), and ZD3, ZD4 when the ring signal is inputted from the telephone line.

9) Power supply and bias circuits

The voltages of +5VA and +24V are supplied from the control PWB unit.

input

5 – 22

Page 95

(Example: Fax signal send)

FO-2950MGR/GH/MY/TH

SHUNT

LINE

EARTH

SHUNT

EXT.

TEL

EARTH

E-RLY

SURGE

PROTECTION

1 0

TAX

PULSE

FILTER

CURRENT DETECTOR

CONTROL PWBLIU PWB

CML

0 1

TXOUT

1 0

DI DETECTOR

1 0

0 1

RXIN EXTSIG MPXA CI MPXB MPXC HS TELMUTE2 TELMUTE RHS

RCVOL RCVOL

+5V

+24V

GAINC

0 1

BZCONT

1 0

BZOUT01

VOLA

VOLB

VOLC

SIGTX

SIGRX

TELOUT

SPOUT

BZOUT

PA23

PE10

PE11

PE12

PE13

PF1

PF2

PF3

MODEM (FM214)

G.A.

(LR38784)

PA0

PA1

PA2

PA3

PA4

PA5

PE8

SH2

(7041)

PE9

Fig. 24

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FO-2950MGR/GH/MY/TH

[3-2] Circuit description of TEL/LIU and

Hook SW PWB (TH)

1. TEL/LIU block operation description (1) Block diagram

CONTROL PWBLIU PWB

CML

LINE

EXT.

CML

HS DETECTOR

SPEAKER

TEL MUTE

(H:MUTE)

CI DETECTOR

SP MUTE (H:MUTE)

TEL IN

TELOUT

TXOUT

RXIN

+5VA +24V DG

0:CID

1:RX

GAIN -C

0:MID 1:HIGH

Fig. 25

SIGTX

TELOUT

SIXGRX

SPOUT

BZCONT

0:LINE 1:BZ

HOOK-SW PWB

SPKRP-P

LINE OUT

SP OUT ENABLE

MICP

LINE OUT

ENABLE

SP DRIVER

MIC GAIN 0, 20, 25, 30dB

LINE IN

LINE

DRIVER

MUTE, 0,

–6, –12dB

MIC IN LPF

LINE IN LPF

LNLNSEL

(0:0) (1:1) (1:0)

BZOUT

BZCONT

RCVOL

VOL C VOL B VOL A

SP MUTE

TEL MUTE

(0:1)

MIC ENABLE

(1:0) (0:0)

(1:1)

MIC

ENABLE

1 0

LINE IN

ENABLE

IC15 LR38784A

IC5 SH2

(7041)

RHS

GAIN-C

CML

DAC

DAC GAIN

0, 6dB

ADC

ADC, GAIN

0, –4dB

SIN

SOUT

(2) Circuit description

The TEL/LIU PWB is composed of the following 9 blocks.

1. Surge protection circuit

2. On-hook status detection circuit

3. Dial pulse generation circuit

4. CML relay

5. Matching transformer

6. Hybrid circuit

7. Signal selection

8. CI detection circuit

9. Power supply and bias circuit

(3) Block description

1) Surge Protection circuit

This circuit protects the circuit from the surge voltage occurring on the telephone line.

• The AR1 protects the circuit from the 390V or higher line surge voltages.

• The V A1 and V A2 protect the circuit from the 470V or higher vertical surge voltage.

2) On-hook status detection circuit

The on-hook status detection circuit detects the status of the hook switch (RHS) of built-in telephone, and the status of the hook of a telephone externally connected.

• The status of on-hook switch (RHS) is determined from the logical level of RHS signal. (RHS is in the hook SW PWB)

RHS LOW: ON-HOOK RHS HIGH: OFF-HOOK

• External telephone hook status detection circuit (HS)

This circuit comprises the photo-coupler PC2, resistors R1 and R2, Zener diodes ZD1 and ZD2.

When an external telephone is connected and enters the on-hook mode, the LED of photo-coupler PC2 emits light and the light receiving element turns on. The status signal HS is input to the pin119 of (SH7041) (IC5: control PWB).

HS LOW: EXT. TEL OFF-HOOK HS HIGH:EXT. TEL ON-HOOK

3) Dial pulse generation circuit

The pulse dial generation circuit comprises the CML relay.

4) CML relay

The CML relay switches over connection to the matching transformer T1 while the FAX or built-in telephone is being used.

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FO-2950MGR/GH/MY/TH

5) Matching transformer

The matching transformer performs electrical insulation from the tel-

ephone line and impedance matching for transmitting the TEL/FAX signal.

6) Hybrid circuit

The hybrid circuit performs 2-wire-to-4-wire conversion using the IC1

of operational amplifier, transmits the voice transmission signal to the line, and feeds back the voice signal to the voice reception circuit as the side tone.

7) 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 H: Line make

SP MUTE H: Muting (Power down mode)

TEL MUTE H: Muting

VOL A VRSEL1 VRSEL2 matrix VOL B

VOL C

(The circuit is located

in the control PWB.)

GAIN-C Reception gain switching signal

(The circuit is located L: When connected to line, 1: 1 gain

in the control PWB.) H: When not connected to line, HIGH gain

BZCONT Speaker output signal switching

(The circuit is located H: Buzzer signal output

in the control PWB.) L: When monitoring line signal

Line connecting relay and DP generating relay L: Line break

Speaker tone mute control signal L: Muting cancel (Normal operation)

Handset reception mute control signal L: Muting cancel

Speaker volume control signal

VOL A VOL B VOL C

RING./

Receiving

Buzzer DTMF

H L L High — High L H L Middle — Middle L L H Low — Low L L L — Fixed —

[Signals for status recognition according to input signals]

Signal Name Function

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

(On the HOOK-SW PWB)

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

CI Incoming call (CI) detection signal.

H: The handset or external telephone is in the

on-hook state.

L: The handset or external telephone is in the

off-hook state.

[Other signals]

Signal Name Function

TEL IN Receiving signal from line or modem

TEL OUT Transfer signal to line

TXOUT

RXIN

Transmission (DTMF) analog signal output from modem Reception (DTMF, others) analog signal into modem

No. Signal Name (CNLIU) No. Signal Name (CNLIU)

1 +24V 7

RHS 2 DG 8 TXOUT 3 +5VA 9 RXIN 4 CML 10 TELMUTE 5

CI 11 TELOUT

6 HS 12 TELIN

No.

Signal Name (CNHS 1 and 2)

1 RHS 2

No.

Signal Name (CNHS 1 and 2)

input

8) CI detection circuit

The CI detection circuit detects the CI signals of 15.3 Hz to 68 Hz.

A CI signal, which is provided to the photo-coupler PC1 through the C3 (0.82 uF), R5 (22 K), and ZD3 when the ring signal is inputted from the telephone line.

9) Power supply and bias circuits

The voltages of +5VA and +24V are supplied from the control PWB

unit.

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FO-2950MGR/GH/MY/TH

(Example: Fax signal send)

CML

LINE

EXT.

HS DETECTOR

SPEAKER

TEL MUTE

(H:MUTE)

CI DETECTOR

SP MUTE (H:MUTE)

TEL IN

TELOUT

CML

TXOUT

RXIN

CONTROL PWBLIU PWB

GAIN -C

SP OUT

+24V

ENABLE

SPKRP-P

SIGTX

SP DRIVER

0:CID

1:RX

0:MID

1:HIGH

+5VA

TELOUT

SIXGRX

SPOUT

BZCONT

0:LINE 1:BZ

HOOK-SW PWB

LINE OUT

MICP

LINE OUT

ENABLE

MIC GAIN 0, 20, 25, 30dB

LINE IN

LINE

DRIVER

MUTE, 0,

–6, –12dB

MIC IN LPF

LINE IN LPF

LNLNSEL

(0:0) (1:1) (1:0)

BZOUT

BZCONT

RCVOL

VOL C VOL B VOL A

SP MUTE

TEL MUTE

RHS

(0:1) (1:0) (0:0)

(1:1)

MIC ENABLE

MIC

ENABLE

1 0

LINE IN

ENABLE

IC15 LR38784A

IC5 SH2

(7041)

GAIN-C

CML

DAC

DAC GAIN

0, 6dB

ADC

ADC,GAIN

0, –4dB

SIN

SOUT

Fig. 26

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Page 99

[4] Circuit description of power supply

PWB

FO-2950MGR/GH/MY/TH

1. Noise filter circuit

The filter part removes noises generated from the power unit to avoid noise release outside and prevent external noises from entering. Excessive surge such as thunder is prevented by varistor Z1.

2. Rectified smoothing circuit

The rectified smoothing circuit rectifies AC input at diodes D10, 11, 12, and 13, and then smoothens it at capacitor C5 to supply DC voltage to the switching part.

3. Switching part

This circuit adopts the ringing choke converter system of self-excited type.

By repeating ON/OFF of MOS FETQ1, this system converts DC voltage supplied from the rectified smoothing part into high-frequency pulse, stores energy in the primary winding of transformer T1 during ON period, releases energy to the secondary winding during OFF period, and supplies power.

Frequency changes according to output load; As load increases, ON period becomes longer.

Constant voltage is controlled by applying feedback to the control circuit via photo coupler from 24 V output.

The overcurrent protective circuit detects prolonged ON period caused by excessive output load, lengthens Q1 OFF period by using the control circuit, and restricts energy stored in the primary winding of transformer T1.

Increase of the secondary output voltage 24 V is led to the overcurrent condition by turning on power zener diode D202 between 24 V output and GND.

Thus overvoltage is protected by operating the overcurrent protective circuit of the control circuit.

4. 24 V circuit

To supply output, transformer T1 output is rectified and smoothened with the use of diode D101 and capacitor C101. Voltage is controlled by Volume VR101.

5. +5 V circuit

Transformer T1 output is rectified and smoothened with the use of diode D301 and capacitor C301 to stabilize +5 V output by using 3-terminal regulator IC301.

6. Heater circuit

To maintain the optimal temperature, the heater lamp is controlled by HLON signal from the control panel.

This HLON signal is to switch ON/OFF the heater lamp. If this signal is input LOW, PC2 is switched ON, resulting TRIACK TRA1 ON.

Accordingly, AC power is supplied to the heater lamp to switch the heater lamp ON.

7. Zero cross circuit

When AC input reaches the zero cross point (0 V), PC3 is switched ON. When Q501 is switched ON, the zero cross signal is output to the control panel.

CN1

AC IN

NOISE

FILTER

CIRCUIT

HEATER CIRCUIT

CN2

RECTIFIED

SMOOTHING

CIRCUIT

ZERO CROSS CIRCUIT

Fig. 27

SWITCHING

CIRCUIT

TRANSFORMER

PC1

PC2

+5V

CIRCUIT

+24V

CIRCUIT

+5V

+24VH

+24V

SW101

+24VS

HLON

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FO-2950MGR/GH/MY/TH

[5] Circuit description of CIS UNIT

This CIS unit picks up optical information from the document, converts it into an electrical (analog) signal and it to the control PWB.

1. Block diagram

CISCLK

VLED

GLED

+5V

GND

AiN

OUTPUT CIRCUIT

(emitter follower)

Fig. 28

SIG

CIS

2. Description of blocks (1) CIS

The DL100-05AUJC is highly sensitive charged coupled image sensor that consists of 1728 picture elements.

Receiving two drive signal (SI,CLK) from the control PWB, the transferred photoelectric analog signal SIG is impedance converted, and the signal AIN, is supplied to the control PWB.

(2) Waveforms

1. CLK, SI, SIG signals within the control PWB.

CLK

SIG

1 2 3 1720 1721 1722

5 msec/line

Fig. 29

5 – 28