Panasonic MS KX-FT72BR-G Schematic

.ORDER NO. KMF0112524C3

Personal FAX

KX-FT72BR-G

(for Brazil)

KX-FT72BR-G

CONTENTS

	Page		Page
1 INTRODUCTION	3	5 CIRCUIT OPERATIONS	97
1.1. LCD MESSAGE	3	5.1. CONNECTION DIAGRAM	97
1.2. SAFETY PRECAUTIONS	4	5.2. GENERAL BLOCK DIAGRAM	98
1.3. INSULATION RESISTANCE TEST	4	5.3. CONTROL SECTION	100
1.4. FOR SERVICE TECHNICIANS	4	5.4. FACSIMILE SECTION	108
1.5. BATTERY CAUTION	4	5.5. SENSORS AND SWITCHES	118
1.6. AC CAUTION	5	5.6. MODEM SECTION	121
1.7. PERSONAL SAFETY PRECAUTIONS	5	5.7. ANALOG UNIT BLOCK DIAGRAM	128
1.8. FEATURES	6	5.8. NCU SECTION	129
1.9. SPECIFICATIONS	7	5.9. ITS (Integrated telephone System) and MONITOR
1.10. OPTIONAL ACCESSORY	7	SECTION	131
1.11. TEST CHART	8	5.10. EXT. TEL	131
1.12. LOCATION OF CONTROLS	10	5.11. OPERATION BOARD SECTION	133
1.13. CONNECTIONS	12	5.12. POWER SUPPLY BOARD SECTION	135
1.14. INSTALLATION	13	6 TERMINAL GUIDE OF THE ICs TRANSISTORS AND DIODES
1.15. MAINTENANCE ITEMS AND COMPONENT LOCATIONS			137
	18	7 FIXTURES AND TOOLS	138
2 TROUBLESHOOTING GUIDE	21	8 CABINET, MECHANICAL AND ELECTRICAL PARTS
2.1. TROUBLESHOOTING SUMMARY	21	LOCATION	139
2.2. USER RECOVERABLE ERRORS	22	8.1. OPERATION PANEL SECTION	139
2.3. TROUBLESHOOTING DETAILS	25	8.2. UPPER CABINET SECTION	140
2.4. PROGRAMMING AND LISTS	75	8.3. LOWER CABINET/P.C.B. SECTION	141
2.5. TEST FUNCTIONS	82	8.4. MOTOR SECTION	142
3 DISASSEMBLY INSTRUCTIONS	84	8.5. ACTUAL SIZE OF SCREWS	143
3.1. HOW TO REMOVE THE HANDSET CRADLE CABINET,		9 ACCESSORIES AND PACKING MATERIALS	144
HOOK BUTTON AND SPEAKER	84	10 REPLACEMENT PARTS LIST	145
3.2. HOW TO REMOVE THE OPERATION BLOCK	85	10.1. CABINET AND ELECTRICAL PARTS	145
3.3. HOW TO REMOVE THE OPERATION BOARD AND LCD		10.2. DIGITAL BOARD PARTS	146
	86	10.3. ANALOG BOARD PARTS	148
3.4. HOW TO REMOVE THE BOTTOM FRAME AND		10.4. OPERATION BOARD PARTS	149
ANALOG BOARD	87	10.5. POWER SUPPLY BOARD PARTS	149
3.5. HOW TO REMOVE THE DIGITAL, POWER SUPPLY		10.6. FIXTURES AND TOOLS	150
BOARD AND AC INLET	88	11 PRINTED CIRCUIT BOARD	151
3.6. HOW•@TOREMOVE THE MOTOR BLOCK AND		11.1. DIGITAL BOARD : COMPONENT VIEW	151
SEPARATION ROLLER	89	11.2. DIGITAL BOARD (PCB1) : BOTTOM VIEW	152
3.7. HOW TO REMOVE THE MOTOR AND GEARS OF		11.3. ANALOG BOARD (PCB2) : COMPONENT VIEW	153
MOTOR BLOCK	90	11.4. ANALOG BOARD (PCB2) : BOTTOM VIEW	154
3.8. HOW TO REMOVE THE IMAGE SENSOR (CIS)	91	11.5. OPERATION BOARD (PCB3)	155
3.9. HOW TO REMOVE THE DOCUMENT FEED ROLLER 92		11.6. POWER SUPPLY BOARD (PCB4)	156
3.10. HOW TO REMOVE THE THERMAL HEAD	93	12 FOR THE SCHEMATIC DIAGRAMS	157
3.11. INSTALLATION POSITION OF THE LEAD WIRES	94	13 SCHEMATIC DIAGRAM	158
4 HOW TO REPLACE THE FLAT PACKAGE IC	95	13.1. DIGITAL BOARD (PC1)	158
4.1. PREPARATION	95	13.2. ANALOG CIRCUIT (PCB2)	160
4.2. FLAT PACKAGE IC REMOVAL PROCEDURE	95	13.3. OPERATION BOARD (PCB3)	161
4.3. FLAT PACKAGE IC INSTALLATION PROCEDURE	96	13.4. POWER SUPPLY BOARD (PCB4)	162
4.4. BRIDGE MODIFICATION PROCEDURE	96

KX-FT72BR-G

1 INTRODUCTION

1.1.LCD MESSAGE

KX-FT72BR-G

1.2.SAFETY PRECAUTIONS

1.Before servicing, unplug the AC power cord to prevent an electric shock.

2.When replacing parts, use only the manufacturer´s recommended components.

3.Check the condition of the power cord. Replace if wear or damage is evident.

4.After servicing, be sure to restore the lead dress, insulation barriers, insulation papers, shields, etc.

5.Before returning the serviced equipment to the customer, be sure to perform the following insulation resistance test to prevent the customer from being exposed to shock hazards.

1.3.INSULATION RESISTANCE TEST

1.Unplug the power cord and short the two prongs of the plug with a jumper wire.

2.Turn on the power switch.

3.Measure the resistance value with an ohmmeter between the jumpered AC plug and each exposed metal cabinet part (screw heads, control shafts, bottom frame, etc.).

Note: Some exposed parts may be isolated from the chassis by design. These will read infinity.

4.If the measurement is outside the specified limits, there is a possibility of a shock hazard.

The equipment should be repaired and rechecked before it is returned to the customer.

1.4.FOR SERVICE TECHNICIANS

ICs and LSIs are vulnerable to static electricity.

When repairing, the following precautions will help prevent recurring malfunctions.

1.Cover the plastic part´s boxes with aluminum foil.

2.Ground the soldering irons.

3.Use a conductive mat on the worktable.

4.Do not touch the IC or LSI pins with bare fingers.

1.5.BATTERY CAUTION

CAUTION

Danger of explosion if the battery is replaced incorrectly. Replace only with the same or equivalent type recommended by the manufacturer. Discard used batteries according to following caution:

Disposal of lithium batteries should be performed by permitted, professional disposal firms knowledgeable in state government federal and local hazardous materials and hazardous waste transportation and disposal requirements.

A battery continues to have no transportation limitations as long as it is separated to prevent short circuits and packed in strong packaging.

Commercial firms that dispose of any quantity of lithium cells should have a mechanism in place to account for their ultimate disposition. This is a good practice for all types of commercial or industrial waste.

Recommend Type Number:

PFSU1004Z (BAT501) Manufactured by TOSHIBA

CR2032 (BAT501) Manufactured by MATSUSHITA

PQPCR2032H09 (BAT501) Manufactured by SONY

KX-FT72BR-G

1.6.AC CAUTION

For safety, before closing the lower cabinet, please make sure of the following precautions.

(1)The earth lead is fixed with the screw.

(2)The AC connector is connected properly.

(3)Wrap the Earth Lead lead around the core 4 times.

1.7.PERSONAL SAFETY PRECAUTIONS

1.7.1.MOVING SECTIONS OF THE UNIT

Be careful not to let your hair, clothes, fingers, accessories, etc., become caught in any moving sections of the unit.

The moving sections of the unit are the rollers and a gear. There is a separation roller and a document feed roller which are rotated by the document feed motor. A gear rotates the two rollers. Be careful not to touch them with your hands, especially when the unit is operating.

KX-FT72BR-G

1.7.2.LIVE ELECTRICAL SECTIONS

All the electrical sections of the unit supplied with AC power by the AC power cord are live. Never disassemble the unit for service with the AC power supply plugged in.

1.8. FEATURES
General	Integrated Telephone System
• Help function	• Electric Volume Control
Please refer to WHEN YOU DON´T KNOW HOW TO	• On-hook dialing
OPERATE THE UNIT, USE THE HELP FUNCTION.(P.21)	• Redialing function

	to print below features.	• Temporary tone dialing
	Display:(Refer to LCD MESSAGE (P.3))	• Temporary tone dialing
	Display:(Refer to LCD MESSAGE (P.3))	• Electric Telephone directory
	− DIRECTORY	• Electric Telephone directory
	− DIRECTORY
	− RECEIVE MODE

Facsimile

•Space Saving Compact Design

•Resolution: Standard, Fine/Photo, Super Fine

•Copier Function

•Automatic Document Feeder (10 Sheets)

•Help Printout

•Easy-to-view LCD (15 Characters)

KX-FT72BR-G

1.9.SPECIFICATIONS

Applicable Lines:	Public Switched Telephone Network
Document Size:	Max. 216 mm (8 1/2”) in width
	Max. 600 mm (23 5/8”) in length
Effective Scanning Width:	208mm (8 3/16”)
Recording Paper Size:	216 mm max. 30 m (8 1/2”×98”) roll
Effective Printing Width:	208 mm (8 3/16”)
Transmission Time*:	Approx. 15 s/page (Original mode)**
	Approx. 30 s/page (G3 Normal mode)
Scanning Density:	Horizontal:
	8 pels/mm (203 pels/inch)
	Vertical:
	3.85 lines/mm (98 lines/inch)—STANDARD
	7.7 lines/mm (196 lines/inch)—FINE/PHOTO
	15.4 lines/mm (392 lines/inch)—SUPER FINE
Halftone Level:	64-level
Scanner Type:	Contact Image Sensor (CIS)
Printer Type:	Thermal Printing
Data Compression System:	Modified Huffman (MH), Modified READ (MR)
Modem Speed:	9,600 / 7,200 / 4,800 / 2,400 bps; Automatic Fallback
Operating Environment:	5°C—35°C (41°F—95°F), 45 %—85 % RH (Relative Humidity)
Dimensions (H×W×D):	118 mm × 338 mm × 246 mm (4 5/8” × 13 5/16” × 9 11/16”)
Mass (Weight):	Approx. 2.5 kg (5.5 lb.)
Power Consumption:	Standby: Approx. 5.5 W
	Transmission: Approx. 20 W (When sending the ITU-T No.1 Test Chart)
	Reception: Approx. 33 W (When receiving the ITU-T No. 1 Test Chart)
	Copy: Approx. 30 W (When copying the ITU-T No. 1 Test Chart)
	Maximum: Approx. 120 W (When copying a 100 % black document)
Power Supply:	120 V AC, 60 Hz

*Transmission speed depends upon the contents of the pages, resolution, telephone line conditions and capability of the other party´s machine.

**Transmission speed is based upon the ITU-T No. 1 Test Chart and original mode. (Refer to TEST CHART (P.8).)

If the capability of the other party’s machine is inferior to your unit, the transmission time may be longer.

Note:

•Any details given in these instructions are subject to change without notice.

•The pictures and illustrations in these instructions may vary slightly from the actual product.

1.10. OPTIONAL ACCESSORY

Model No.	Description	Specifications
KX-A106	Standard thermal recording paper	216 mm × 30 m (8 1/2”×98’) roll, with 25 mm (1”) core

KX-FT72BR-G

1.11. TEST CHART

1.11.1. ITU-T NO.1 TEST CHART

KX-FT72BR-G

1.11.2. CCITT NO. 2 TEST CHART

KX-FT72BR-G

1.12. LOCATION OF CONTROLS

1.12.1. OVERVIEW

1.12.2. CONTROL PANEL

RECEIVE MODE

• To change the receive mode.

STOP

• To stop an operation or cancel programming.

TONE

• To change from pulse to tone temporarily during dialing when your line has rotary pulse services.

FLASH

•To access special telephone services such as call waiting or for transferring

extension calls.

REDIAL/PAUSE

• To redial the last number dialed. If the line is busy when you make a phone call

using the button, the unit will automatically redial the number up to 5 times.

• To insert a pause during dialing.

MUTE

•To mute your voice to the other party during a conversation. Press this button

again to resume the conversation.

MONITOR

• To dial without lifting the handset.

KX-FT72BR-G

• To initiate or exit programming .

NAVIGATOR, VOLUME

•To adjust volume.

•To search for a stored name.

•To select the features or feature settings during programming.

•To navigate to the next operation.

HELP

• To print a quick reference.

FAX/START, SET

•To initiate fax transmission or reception.

•To store a setting during programming.

COPY

• To initiate copying.

KX-FT72BR-G

1.13. CONNECTIONS

(1)Connect the handset cord.

(2)Connect the telephone line cord.

(3)Connect the power cord.

NOTE

When you operate this products, the power outlet should be near the product and easily accessible.

KX-FT72BR-G

1.14. INSTALLATION

1.14.1. INSTALLING THE RECORDING PAPER

(1)Open the cover by pressing the cover open button and install the recording paper roll.

•If the paper is secured with glue or tape, cut approximately 15 cm (6 inches) from the beginning of the roll.

(2)Pull the leading edge of the paper approximately 10 cm (4 inches) out of the unit.

•Make sure that there is no slack in the paper roll.

(3) Close the cover securely by pushing down on both sides.

(4)Tear off the excess paper by pulling it towards you.

Note:

•Only use the included roll of paper or specified recording paper, or else the print quality may be affected and/or excessive thermal head wear may occur.

•To order recording paper, see OPTIONAL ACCESSORY (P.7).

•When the power cord is connected, every time you close the cover a message will be printed if the recording paper is set to the wrong side, a message will not be printed. Install the paper correctly.

KX-FT72BR-G

1.14.2. SETTING YOUR LOGO

The logo can be your company, division or name.

(1)Press .

Display:Refer to LCD MESSAGE (P.3)

(2)Press .

(3)Press or until the following is displayed.

(4)Press .

(5)Enter your logo, up to 30 characters, by using the dial keypad.

Example: Bill

a.Press 2 times.

b.Press 6 times.

c.Press 6 times.

d.Press to move the cursor to the next space and press 6 times.

(6)Press .

•The next feature will be displayed.

(7)Press .

Note:

• You can enter your logo by pressing or in step (4). In this case, press to move the cursor.

To correct a mistake

•Press or to move the cursor to the incorrect character, and make the correction.

To delete a character

• Move the cursor to the character you want to delete and press

To insert a character

1.Press or to move the cursor to the position to the right of where you want to insert the character.

2.Press to insert a space and enter the character.

KX-FT72BR-G

1.14.3. TO SELECT CHARACTERS WITH THE DIAL KEYPAD

Pressing the dial keys will select a character as shown below.

1.14.4. TO SELECT CHARACTERS USING or

Instead of pressing the dial keys, you can select characters using or .

(1)Press or until the desired character is displayed.

(2)Press to move the cursor to the next space.

•The character displayed in step 1 is inserted.

(3)Return to step 1 to enter the next character.

Display order of characters

KX-FT72BR-G

1.14.5. SETTING THE DIAL LOCK

The dial lock feature prevents the unit from calls being made to any numbers, except for pre-stored emergency telephone numbers.

(1)Press . Display:

(2)Press .

(3)Enter yor PIN(Personal dentification Number) code, from 2 to 4 digits, using 0-9.

If you want to release the PIN code, refer to #531 on the

SERVICE FUNCTION TABLE (P.77)

(4)Press .

(5)Enter an emergency telephone number, up to 30 digits, using the dial keypad.

(6)Press .

•The next feature will be displayed.

(7)If necessary, enter the second emergency telephone number using the dial keypad.

•If you do not need to enter, skip to step 8.

(8)Press .

(9)If necessary, enter the third emergency telephone number using the dial keypad.

•If you do not need to enter, skip to step 10.

(10)Press .

Note:

•To correct/delete an emergency telephone number, see the bottom right of page 19.

•You can also enter an emergency telephone number using the directory in steps 5,7 and 9.

Press or until the desired name is displayed, then press .

Making an emergency call

1. Press	to lift the handset while the unit displays the
following.
Display:

• The display will show the following.

To insert a character

1.Follow steps 1-3 on the left.

2.Press .

Example:
2. Press	or	unitil the desired emergency telephone number
is displayed.
Example:

3.Press

•The unit will start dialing automatically.

•If any documents are in the document entrance, the unit will start fax transmission..

KX-FT72BR-G

1.14.6. DOCUMENTS YOU CAN SEND

Note:

•Remove clips, staples or other similar fasteners.

•Check that ink, paste or correction fluid has dried.

•Do not send the following types of documents:(Use copies for fax transmission.)

—Chemic ally treated paper such as carbon or carbonless duplicating paper

—Electrostatically charged paper

—Badly curled, creased or torn paper

—Paper with a coated surface

—Paper with a faint image

—Paper with printing on the opposite side that can be seen through the front (i.e. newspaper)

•To transmit the document(s) with a width of less than A4 size (210mm), we recommend using a copy machine to copy the original document onto A4 or letter-sized paper, than transmit the copied document.

KX-FT72BR-G

1.15. MAINTENANCE ITEMS AND COMPONENT LOCATIONS

1.15.1. OUTLINE

MAINTENANCE AND REPAIRS ARE PERFORMED USING THE FOLLOWING STEPS.

1.Periodic maintenance

Inspect the equipment periodically and if necessary, clean any contaminated parts.

2.Check for breakdowns

Look for problems and consider how they arose.

If the equipment can be still used, perform copying, self testing or communication testing.

3.Check equipment

Perform copying, self testing and communication testing to determine if the problem originates from the transmitter, receiver or the telephone line.

4.Determine causes

Determine the causes of equipment problem by troubleshooting.

5.Equipment repairs

Repair or replace the defective parts and take appropriate measures at this stage to ensure that the problem will not recur.

6.Confirm normal operation of the equipment

After completing the repairs, conduct copying, self testing and communication testing to confirm that the equipment operates normally.

7.Record keeping

Make a record of the measures taken to rectify the problem for future reference.

1.15.2. MAINTENANCE CHECK ITEMS/COMPONENT LOCATIONS

KX-FT72BR-G

1.15.2.1. MAINTENANCE LIST

NO.	OPERATION	CHECK	REMARKS
1	Document Path	Remove any foreign matter such as paper.	—
2	Rollers	If the roller is dirty, clean it with a damp cloth then dry	See CLEANING (P.20)
		thoroughly.
3	Thermal Head	If the thermal head is dirty, clean the printing surface	See CLEANING (P.20) and
		with a cloth moistened with denatured alcohol (alcohol	DISASSEMBLY INSTRUCTIONS
		without water), then dry thoroughly.	(P.84).
4	Glass	If the glass is dirty, clean the with a dry soft cloth.	See CLEANING (P.20)
5	Sensors	Document sensor (PS1), Read position sensor (PS2),	See SENSOR SECTION (P.72)
		Recording paper/cover open sensor (SW1) Jam sensor	and SENSORS AND SWITCHES
		(SW3).	(P.118) .
6	Abnormal, wear and tear or loose parts	If the glass is dirty, clean them with a dry soft cloth.	—

1.15.2.2. MAINTENANCE CYCLE

No.	Item	Cleaning Cycle			Replacement
			Cycle		Procedure
1	Separation Roller	3 months	7 years*		See HOW•@TO REMOVE THE MOTOR BLOCK
	(Ref. No. 72)		(100,000	documents)	AND SEPARATION ROLLER (P.89).
2	Separation Rubber	3 months	7 years*		See HOW•@TO REMOVE THE MOTOR BLOCK
	(Ref. No. 21)		(100,000	documents)	AND SEPARATION ROLLER (P.89).
3	Feed Rollers	3 months	7 years*		See HOW•@TO REMOVE THE MOTOR BLOCK
	(Ref. No. 58)		(100,000	documents)	AND SEPARATION ROLLER (P.89).
4	Thermal Head	3 months	7 years*		See HOW•@TO REMOVE THE MOTOR BLOCK
	(Ref. No. 53)		(100,000	documents)	AND SEPARATION ROLLER (P.89).

* These values are standard and may vary depending on usage conditions.P.89

KX-FT72BR-G

1.15.3. CLEANING

1.15.3.1. DOCUMENT FEEDER

If misfeeding occurs frequently or if dirty patterns or black bands or white bands appear on a copied or transmitted document or the original of a copied document, clean the document feeder.

(1)Disconnect the power cord and the telephone line cord.

(2)Open the cover by pressing the cover open button.

(3)Clean the document feeder rollers, sub roller and rubber flap with a cloth moistened with isopropyl rubbing alcohol, and let all parts dry thoroughly.

(4)Clean the white plate and glass with a soft dry cloth.

(5)Close the cover securely by pushing down on both ends.

(6)Connect the power cord and the telephone line cord.

Caution:

Do not use paper products, such as paper towels or tissues, to clean the inside of the unit.

1.15.3.2. THE THERMAL HEAD

If dirty patterns or black bands appear on a copied or received document, clean the thermal head.

(1)Disconnect the power cord and the telephone line cord.

(2)Open the cover by pressing the cover open button.

(3)Clean the thermal head with a cloth moistened with isopropyl rubbing alcohol, and let it dry thoroughly.

(4)Close the cover securely by pushing down on both sides.

(5)Connect the power cord and the telephone line cord.

Caution:

To prevent a malfunction due to static electricity, do not use a dry cloth and do not touch the thermal head directly.

KX-FT72BR-G

2 TROUBLESHOOTING GUIDE

2.1.TROUBLESHOOTING SUMMARY

2.1.1.TROUBLESHOOTING

After confirming the problem by asking the user, troubleshoot according to the instructions and observe the following precautions.

2.1.2.PRECAUTIONS

1.If there is a problem with the print quality or the paper feed, first check if the installation space and the print paper meets the specifications, the paper selection lever/paper thickness lever is set correctly, and the paper is set correctly without any slack.

2.Before troubleshooting, first check that the connectors and cables are connected correctly (not loose). If the problem occurs randomly, check it very carefully.

3.When connecting the AC power cord with the unit case and checking the operation, exercise utmost care when handling electric parts in order to avoid electric shocks and short-circuits.

4.After troubleshooting, double check that you have not forgotten any connectors, left any loose screws, etc.

5.Always test to verify that the unit is working normally.

2.1.3.WHEN YOU DON´T KNOW HOW TO OPERATE THE UNIT, USE THE HELP FUNCTION

•How to use:

1.press .

2.press or until the desired item is displayed.

3.press .

KX-FT72BR-G

2.2.USER RECOVERABLE ERRORS

If the unit detects a problem, the following messages will appear on the display.

Refer to LCD MESSAGE (P.3)

DISPLAY MESSAGE	CAUSE AND SOLUTION
	• There is something wrong with the unit. Contact our service personnel.
	[This error is displayed when the thermal head does not warm up. Check the thermistor on the thermal
	head and connector lead.]
	• This message appears when the gear is not in an idle state. Check the GEAR BLOCK.

	• The cover is open. Close it.

•The document was not fed into the unit properly. Reinsert the document. If misfeeding occurs frequently, clean the document feeder rollers (Refer to DOCUMENT FEEDER (P.20)) and try again. (Refer to

DOCUMENT JAM (P.23).)

•Attempted to transmit a document longer than 600 mm.

Press

to remove the document. Divide the document into two or more sheets and try again.

•Memory (telephone numbers, parameters, etc.) has been erased. Re-program.

[ The backup battery on the top of the digital board may be low or dead, so check it. ]

• The other part’y fax machine is busy or has run out of recording paper. Try again.

•The unit has run out of recording paper. Install a recording paper roll. (Refer to INSTALLING THE RECORDING PAPER (P.13).)

• The other part’y fax machine dose not provide the polling function. Check with the other party.

• The other part’y fax machine is busy or has run out of recording paper. Try again.

•The document is jammed. Remove the jammed document.

•[Alternately, turn off service code #559 to enable sending of documents longer than 600 mm] (Refer to

DOCUMENT JAMS (SENDING) (P.23).)

• A transmission error occurred. Try again.

•The unit is too hot. Let the unit cool down.

[ If many copies are nearly all black, this message will be displayed. When this occure, open the front cover and let the unit cool down.]

Notes: The explanations given in the [ ] are for servicemen only.

KX-FT72BR-G

2.2.1.DOCUMENT JAMS (SENDING)

If the unit does not release the document during feeding, remove the jammed document as follows.

(1)Open the cover by pressing the cover open button.

(2)Remove the jammed document carefully.

(3)Pull the leading edge of the recording paper approximately 10 cm (4 inches) out of the unit.

•Make sure that there is no slack in the paper roll.

(4) Close the cover securely by pushing down on both sides.

(5)Tear off the excess paper by pulling it towards you.

Note:

• Do not pull out the jammed document forcibly before opening the cover.

KX-FT72BR-G

2.2.2.RECORDING PAPER JAM

If the unit dose not eject any recording paper during fax reception or copying, the recording paper has jammed. Remove the jammed paper as shown below.

(1)Open the cover by pressing the cover open button and remove the recording paper roll.

(2)Replace the recording paper roll in the proper direction, and pull the leading edge of the paper approximately 10 cm (4 inches) out of the unit.

•Make sure that there is no slack in the paper roll.

(3)Close the cover securely by pushing down on both sides.

(4)Tear off the excess paper by pulling it towards you.

Note:

•When the power cord is connected, every time you close the cover a message will be printed. If the recording paper is set to the wrong side, a message will not be printed. Install the paper correctly.

KX-FT72BR-G

2.3.TROUBLESHOOTING DETAILS

2.3.1.OUTLINE

Troubleshooting guide provides a logical path of deduction to assist in locating a fault and suggests methods of restoring the unit to full working condition. Use the reported symptoms of the fault to determine the best troubleshooting method. Even difficult faults can be tracked to a specific block or area, for example, the "Digital Board" or "Image Sensor".

A variety of fault descriptions from customers often point to the same area and, for this reason, careful analysis of the reported symptoms is required. After every repair, test all functions to ensure no problems are evident.

2.3.2.STARTING TROUBLESHOOTING

Select the appropriate troubleshooting method according to the symptoms.

CROSS REFERENCE:

USER RECOVERABLE ERRORS (P.22)

SIMPLE CHECK LIST (P.26)

DIGITAL BOARD SECTION (P.56)

KX-FT72BR-G

2.3.3.TROUBLESHOOTING ITEMS TABLE

FUNCTION	SYMPTOM		REFERENCE
Printing	Skewed receiving image		See SKEWED RECEIVING IMAGE (P.32)
	Expanded print		See EXPANDER PRINT (WHEN PRINTING) (P.33)
	Image is distorted		See IMAGE IS DISTORTED (WHEN PRINTING) (P.31)
	Black or White vertical lines appear.		See BLACK OR WHITE VERTICAL LINES APPEAR (P.32)
ADF	No feed		See NO DOCUMENT FEED (P.27)
(Auto Document Feeder)	Paper jam		See DOCUMENT JAM (P.28)
	Multiple feed		See MULTIPLE FEED (P.29)
	Skew		See SKEW (P.30)
Abnormal mechanical sound	Abnomal sound from the product		See WHEN COPYING OR PRINTING, AN ABNORMAL SOUND
			IS HEARD FROM THE UNIT (P.33)
Power supply	Voltage output is abnormal.		See POWER SUPPLY BOARD SECTION (P.67)
Operation panel	keys are not accepted.		See OPERATION BOARD SECTION (P.71)
Sensor	If the electric circuit is the cause,	“REMOVE	See SENSOR SECTION (P.72)
	DOCUMENT” will be displayed.
Communication	Cannot communicate by fax.		See DEFECTIVE ITS (INTEGRATED TELEPHONE SYSTEM)
FAX, TEL			SECTION (P.66)
(Analog/Digital board)	Error code is displayed.		See HOW TO OUTPUT THE JOURNAL REPORT (P.44)
	Cannot talk.		See ANALOG BOARD SECTION (P.65)
	DTMF tone doesn’t work.
	Handset/Monitor sound, volume

2.3.3.1.SIMPLE CHECK LIST

	SERIAL NO.		DATE
	FUNCTION	JUDGEMENT	REFERENCE
FAX operation	Transmission	OK / NG

	Receiving	OK / NG

Copy operation	FINE mode	OK / NG

	PHOTO mode	OK / NG

Telephone operation	Handset transceiver / receiver	OK / NG

	Monitor sound	OK / NG

	Ringer sound	OK / NG

	Dial operation	OK / NG

	Volume operation	OK / NG

Operation Panel	Key check	OK / NG	Service code #561
			(Refer to TEST FUNCTIONS (P.82).)
	LCD check	OK / NG	Service code #558
			(Refer to TEST FUNCTIONS (P.82).)
Sensor	Sensor check	OK / NG	Service code #815
			(Refer to TEST FUNCTIONS (P.82).)
Clock		OK / NG	Is the time kept correctly?
			Check with another clock.
External Telephone	Handset transceiver/receiver	OK / NG

	Remote control	OK / NG	Change to FAX receiving by pressing * 9.
			(Refer to code no. 041.on PROGRAM MODE
			TABLE (P.54).)

Note:

• Check according to the sevvice code referring to the TEST FUNCTIONS (P.82).

KX-FT72BR-G

2.3.4.ADF (AUTO DOCUMENT FEED) SECTION

2.3.4.1.NO DOCUMENT FEED

CROSS REFERENCE:

DIGITAL BOARD SECTION (P.56)

POWER SUPPLY BOARD SECTION (P.67)

SENSOR SECTION (P.72)

TEST FUNCTIONS (P.82)

DISASSEMBLY INSTRUCTIONS (P.84)

KX-FT72BR-G

2.3.4.2.DOCUMENT JAM

CROSS REFERENCE:

SENSOR SECTION (P.72)

DISASSEMBLY INSTRUCTIONS (P.84)

KX-FT72BR-G

2.3.4.3.MULTIPLE FEED

CROSS REFERENCE:

DISASSEMBLY INSTRUCTIONS (P.84)

KX-FT72BR-G

2.3.4.4.SKEW

CROSS REFERENCE:

DISASSEMBLY INSTRUCTIONS (P.84)

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