Panasonic KX-FT901CX-B, KX-FT903CX-W, KX-FT901CX-W, KX-FT901CX-S, KX-FT903CX-B Service Manual

ORDER NO. KMF0405779C3

Personal Facsimile

KX-FT901CX-B
KX-FT903CX-B
KX-FT901CX-W
KX-FT903CX-W
KX-FT901CX-S
KX-FT903CX-S

(Black Version)
(White Version)
(Silver Version)

(for Asia and Middle Near East )

IMPORTANT INFORMATION ABOUT LEAD FREE, (PbF), SOLDERING

If lead free solder was used in the manufacture of this product the printed circuit boards will be marked PbF.
Standard leaded, (Pb), solder can be used as usual on boards without the PbF mark.

When this mark does appear, please read and follow the special instructions described in this manual on the use of PbF and how
it might be permissible to use Pb solder during service and repair work.

© 2004 Panasonic Communications Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.

KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S

CONTENTS

Page Page

1 INTRODUCTION 3

1.1. ABOUT LEAD FREE SOLDER (PbF: Pb free)

1.2. SAFETY PRECAUTIONS

1.3. INSULATION RESISTANCE TEST

1.4. FOR SERVICE TECHNICIANS

1.5. BATTERY CAUTION

1.6. AC CAUTION

1.7. PERSONAL SAFETY PRECAUTIONS

1.8. SERVICE PRECAUTIONS

2 FEATURES AND SPECIFICATIONS

2.1. FEATURES

2.2. OPTIONAL ACCESSORIES

2.3. SPECIFICATIONS

3 INSTALLATION

3.1. LOCATION OF CONTROLS

3.2. CONNECTIONS

3.3. INSTALLATION

4 MAINTENANCE

4.1. MAINTENANCE ITEMS AND COMPONENT LOCATIONS

4.2. JAMS

4.3. CLEANING

5 DISASSEMBLY INSTRUCTIONS

5.1. DISASSEMBLY FLOW CHART

6 DISASSEMBLY INSTRUCTIONS

6.1. HOW TO REMOVE THE PAPER STACKER (KX-FT903
ONLY)

6.2. HOW TO REMOVE THE OPERATION PANEL BLOCK

6.3. HOW TO REMOVE THE OPERATION BOARD AND LCD

6.4. HOW TO REMOVE THE IMAGE SENSOR

6.5. HOW TO REMOVE THE THERMAL HEAD AND CUTTER
UNIT

6.6. HOW TO REMOVE THE DOCUMENT TRAY

6.7. HOW TO REMOVE THE BOTTOM FRAME

6.8. HOW TO REMOVE THE HANDSET CRADLE CABINET
AND SPEAKER

6.9. HOW TO REMOVE THE DIGITAL, ANALOG AND
POWER SUPPLY BOARD AND AC INLET

6.10. HOW TO REMOVE THE ROLLERS

6.11. HOW TO REMOVE THE MOTOR BLOCK

6.12. INSTALLATION POSITION OF THE LEAD WIRES

6.13. INSTALLATION OF THERMAL HEAD AND ANALOG
BOARD

7 TROUBLESHOOTING GUIDE

7.1. TROUBLESHOOTING SUMMARY

7.2. USER RECOVERABLE ERRORS

7.3. PROGRAMMING AND LISTS

7.4. TEST FUNCTIONS

10

10
12
13

18

18
20
21

23

23

25

25
26

27
28

29
30
31

32

33
34
35
38

39

40

40
41
42
45

3
5
5
5
5
6
6
7

8

8
8
9

7.5. TROUBLESHOOTING DETAILS

8 CIRCUIT OPERATIONS

8.1. CONNECTION DIAGRAM

8.2. GENERAL BLOCK DIAGRAM

8.3. CONTROL SECTION

8.4. FACSIMILE SECTION

8.5. SENSORS AND SWITCHES

8.6. MODEM SECTION

8.7. ANALOG UNIT BLOCK DIAGRAM

8.8. NCU SECTION

8.9. ITS (INTEGRATED TELEPHONE SYSTEM) AND
MONITOR SECTION

8.10. ATAS (AUTOMATIC TELEPHONE ANSWERING
SYSTEM) SECTION

8.11. OPERATION BOARD SECTION

8.12. LCD SECTION

8.13. POWER SUPPLY BOARD SECTION

9 REFERENCE MATERIAL DATA

9.1. TERMINAL GUIDE OF THE ICs TRANSISTORS AND
DIODES

9.2. HOW TO REPLACE THE FLAT PACKAGE IC

9.3. TEST CHART

10 FIXTURES AND TOOLS
11 CABINET, MECHANICAL

11.1. OPERATION PANEL SECTION

11.2. UPPER CABINET SECTION

11.3. LOWER CABINET

11.4. MOTOR SECTION

11.5. ACTUAL SIZE OF SCREWS

12 ACCESSORIES AND PACKING MATERIALS
13 REPLACEMENT PARTS LIST

13.1. CABINET AND ELECTRICAL PARTS

13.2. DIGITAL BOARD PARTS

13.3. ANALOG BOARD PARTS

13.4. OPERATION BOARD PARTS

13.5. POWER SUPPLY BOARD PARTS

13.6. FIXTURES AND TOOLS

14 PRINTED CIRCUIT BOARD

14.1. DIGITAL BOARD (PCB1)

14.2. ANALOG BOARD (PCB2)

14.3. OPERATION BOARD (PCB3)

14.4. POWER SUPPLY BOARD (PCB4)

15 FOR THE SCHEMATIC DIAGRAMS
16 MEMO
17 SC HEMATIC DIAGRAM

17.1. DIGITAL BOARD (PCB1)

17.2. ANALOG BOARD (PCB2)

17.3. OPERATION BOARD (PCB3)

17.4. POWER SUPPLY BOARD (PCB4)

54

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135

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KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S

1 INTRODUCTION

1.1. ABOUT LEAD FREE SOLDER (PbF: Pb free)

Note:

In the information below, Pb, the symbol for lead in the periodic table of elements, will refer to standard solder or solder that
contains lead.

We will use PbF solder when discussing the lead free solder used in our manufacturing process which is made from Tin (Sn),
Silver, (Ag), and Copper, (Cu).

This model, and others like it, manufactured using lead free solder will have PbF stamped on the PCB. For service and repair
work we suggest using the same type of solder although, with some precautions, standard Pb solder can also be used.

Caution

· PbF solder has a melting point that is 50° ~ 70° F, (30° ~ 40°C) higher than Pb solder. Please use a soldering iron with
temperature control and adjust it to 700° ± 20° F, (370° ± 10°C). In case of using high temperature soldering iron, please
be careful not to heat too long.

· PbF solder will tend to splash if it is heated much higher than its melting point, approximately 1100°F, (600°C).

· If you must use Pb solder on a PCB manufactured using PbF solder, remove as much of the original PbF solder as possible

and be sure that any remaining is melted prior to applying the Pb solder.

· When applying PbF solder to double layered boards, please check the component side for excess which may flow onto the
opposite side (See figure, below).

1.1.1. SUGGESTED PbF SOLDER

There are several types of PbF solder available commercially. While this product is manufactured using Tin, Silver, and Copper,
(Sn+Ag+Cu), you can also use Tin and Copper, (Sn+Cu), or Tin, Zinc, and Bismuth, (Sn+Zn+Bi). Please check the manufac
turer’s specific instructions for the melting points of their products and any precautions for using their product with other
materials.
The following lead free (PbF) solder wire sizes are recommended for service of this product: 0.3mm, 0.6mm and 1.0mm.

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KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S

1.1.2. HOW TO RECOGNIZE THAT Pb FREE SOLDER IS USED

P.C.Boards marked as “PbF” use Pb Free solder. (See the figure below.)
Pb Free is not used the Power Supply Board of this unit.

(Example : Digital Board)

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KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S

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.

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 incorrectly replaced. Replace only with the same or equivalent type recommended by the
manufacturer. Dispose of used batteries according to the manufacturer’s Instructions.

The lithium battery is a critical component (type No. CR2032). Please observe for the proper polarity and the exact location
when replacing it and the exact location when replacing it and soldering the replacement lithium battery in.

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KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S

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 around the core 5 times.

4. Wrap the AC 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.

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KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S

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.

CAUTION:

AC voltage is supplied to the primary side of the power supply unit. Therefore, always unplug the AC power cord before
disassembling for service.

1.8. SERVICE PRECAUTIONS

1.8.1. PRECAUTIONS TO PREVENT DAMAGE FROM STATIC ELECTRICITY

Electrical charges accumulate on a person. For instance, clothes rubbing together can damage electric elements or change their
electrical characteristics. In order to prevent static electricity, touch a metallic part that is grounded to release the static electricity.
Never touch the electrical sections such as the power supply unit, etc.

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KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S

2 FEATURES AND SPECIFICATIONS

2.1. FEATURES

General

· Help function
Display:

−

− HOW TO SET UP

− −

−

− DIRECTORY

− −

−

− AUTO ANSWER

− −

−

− CALLER ID

− −

· LCD (Liquid Crystal Display) readout

Facsimile

· Resolution: Standard/Fine/Super Fine/Halftone

· Copier Function

· Help Printout

· Automatic Document Feeder (10 Sheets)

· Easy-to-view LCD (15 Characters)

· Broadcast (up to 10 Stations)

Integrated telephone system

· One-touch dial (22 items)

· Navigator directory (100 items)

2.2. OPTIONAL ACCESSORIES

Model No. Description Specifications

KX-A106 Standard thermal recording paper 216 mm × 30 m roll, with 25 mm core

Note:

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

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KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S

2.3. SPECIFICATIONS

Applicable Lines: Public Switched Telephone Network
Document Size: Max. 216 mm in width

Max. 600 mm in length

Effective Scanning Width: 208 mm
Recording Paper Size: 216 mm × max. 30 m roll
Effective Printing Width: 208 mm
Transmission Time*
Scanning Density: Horizontal:

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—35°C, 20—80 % RH (Relative Humidity)
Dimensions: Approx. height 120 mm × width 347 mm × depth 270 mm
Mass (Weight): Approx. 2.6 kg (KX-FT901CX-B/W/S) Approx. 2.7 kg (KX-FT903CX-B/W/S)
Power Consumption: Standby: Approx. 3.0 W

Power Supply: 220-240 V AC, 50/60 Hz
Fax Memory Capacity:(KX­FT903CX-B/W/S ONLY)

1

: Approx. 15 s/page (Original mode)*

8 pels/mm
Vertical:

3.85 lines/mm — in standard resolution

7.7 lines/mm — in fine/photo resolution

15.4 lines/mm — in super fine resolution

Transmission: Approx. 25 W
Reception: Approx. 40 W (When receiving a 20% black document)
Copy: Approx. 40 W (When copying a 20% black document)
Maximum: Approx. 125 W (When receiving a 100% black document)

Approx. 20 pages of document memory (Based on the ITU-T No. 1 Test Chart in
standard resolution)

2

1

*

Transmission speed depends upon the contents of the pages, resolution, telephone line conditions and capability of the other

party’s machine.

2

*

Transmission speed is based upon the ITU-T No. 1 Test Chart. (Refer to ITU-T No.1 TEST CHART (P.147).) If the capability of

the other party´s machine is inferior to your unit, the transmission time may be longer.

3

*

Recording time may be reduced by the calling party’s background noise.

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.

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KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S

3 INSTALLATION

3.1. LOCATION OF CONTROLS

3.1.1. FRONT VIEW

(1) Speaker
(2) Document guides
(3) Document feeder tray
(4) Paper stacker (KX-FT903CX ONLY)

The paper stacker may not be shown in all illustrations in
this operating instructions.

(5) Document exit
(6) Microphone
(7) Document entrance
(8) Cover open button
Note:

· Remove all the blue shipping tapes before
installation.

10

3.1.2. CONTROL PANEL

KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S

(1) [TONE]

· To change from pulse to tone temporarily during dialling
when your line has rotary pulse services..

(7) [BROADCAST] (KX-FT903CX-B/W/S ONLY)

· To transmit a document to multiple parties.

(8) Station keys

· To use one-touch dial.

(9) [AUTO ANSWER]

· To turn ON/OFF the auto answer setting .

(10) [SEARCH]

· To use Caller ID features.

(11) [STOP]

· To stop an operation or programming.

(12) [FLASH]

· To access special telephone services or for transferring
extension calls.

(13) [REDIAL] [PAUSE]

· To redial the last number dialled. If the line is busy when
you make a phone call using the [MONITOR] button,
the unit will automatically redial the number up to 2
times.

· To insert a pause during dialling

(14) [MUTE]

· To mute your voice to the other party during a
conversation. Press this button again to resume the
conversation .

(15) [MONITOR]

· To initiate dialling without lifting the handset.

(16) [MENU]

· To initiate or exit programming.

(17) [NAVIGATOR] [VOLUME]

· To adjust volume.

· To search for a stored item.

· To select features or feature settings during

programming.

· To navigate to the next operation.

(18) [HELP]

· To print a quick reference.

(19) [LOWER]

· To select stations 12-22 for one-touch dial.

(20) [FAX/START] [SET]

· To start sending or receiving a fax.

· To store a setting during programming.

(21) [COPY]

· To copy a document.

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KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S

3.2. CONNECTIONS

(1) Handset cord.
(2) Telephone line cord.
(3) Power cord (220-240 V, 50/60 Hz).
(4) Paper stacker (KX-FT903CX ONLY)
(5) [EXT] jack
(6) Extension telephone (not included)

Caution:

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

· Be sure to use the telephone line cord included in this unit.

· Do not extend the telephone line cord.

Note:

· To avoid malfunction, do not position fax machine near appliance such as TVs or speakers which generate an intense
magnetic field.

· If any other device is connected on the same line, this unit may disturb the network condition of the device.

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KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S

3.3. INSTALLATION

3.3.1. INSTALLATION SPACE

The space required to install the unit is shown below.
The dimensions given are necessary for the unit to operate efficiently.

Note:

· Avoid excessive heat or humidity.

· Use the unit within the following ranges of temperature and humidity.

· Ambient temperature: 5°C to 35°C

· Relative humidity: 20% to 80% (without condensation)

· Power cord length should be less than 5 meters. Using a longer cord may reduce the voltage or cause malfunctions.

· Avoid direct sunlight.

· Do not install near devices which contain magnets or generate magnetic fields.

· Do not subject the unit to strong physical shock or vibration.

· Keep the unit clean. Dust accumulation can prevent the unit from functioning properly.

· To protect the unit from damage, hold both sides when you move it.

3.3.2. PAPER STACKER (KX-FT903CX-B/W/S ONLY)

Install the paper stacker.

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KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S

3.3.3. RECORDING PAPER

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

2 Install the recording paper.

3 Insert the leading edge of the paper into the opening above the

thermal head (

).

5 Close the cover securely by pushing down on.

6 KX-FT901CX

Tear off the excess paper by pulling it towards you.

6 KX-FT903CX

Press [FAX/START] to cut the paper.

4 Pull the paper out of the unit.

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

Note:

· If the paper is secured with glue or tape, cut approximately
15 cm from the beginning of the roll before installing it.

· When the power cord is connected, a message is printed
each time the cover is opened then closed. If the recording
paper is installed upside down, the massage will not be
printed. Install the paper correctly.

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KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S

3.3.4. DOCUMENTS THE UNIT CAN FEED

Note:

· Remove chips, staples or other similar fasteners.

· Do not send the following types of documents. (Use the scanner glass for fax transmission.)

— Chemically treated paper such as carbon or carbon less 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 other side (i.e. newspaper)

· Check that ink, paste or correction fluid has dried completely.

· To transmit the document with a width of less than standard A4 size (210 mm), we recommend using a copy machine to

copy the original document onto A4 or letter-sized paper, than transmit the copied document.

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KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S

3.3.5. SETTING YOUR LOGO

The logo can be your company, division or name.

1 Press [MENU].

2 Press [SET].

To enter your logo
Example: “BI LL”

1. Press [2] 2times.

2. Press [4] 3times.

3. Press [5] 3times.

4. Press [ ] to move the cursor to the next space and press

[5] 3times.

3 Press [ ]or[ ] repeatedly to display the following.

4 Press [SET].

· The underbar shows a position of the cursor..

5 Enter your logo, up to 30 characters. See the character table on

page 15 for details.

6 Press [SET].

· The next feature will be displayed.

6 Press [MENU] to exit the program.

Note:

· Your logo will be printed on each page transmitted from
your unit.

To correct a mistake

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

To delete a character

Press [ ] or [ ] to move the cursor to the character you want
to delete and press [STOP].

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 [MUTE] to insert a space and enter the character.

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KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S

3.3.5.1. TO SELECT CHARACTERS WITH THE DIAL KEYPAD

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

To select characters using or

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

1. Press

or .

repeatedly to display the desired character.

Characters will be displayed in the following order.
a. Uppercase letters
b. Number
c. Symbol
d. Lowercase letters

· If you press

2. Press [

] to insert the character.

, the order will be reversed.

· The character displayed in step 1 is inserted.

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

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KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S

4 MAINTENANCE

4.1. MAINTENANCE ITEMS AND COMPONENT LOCATIONS

4.1.1. 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 the 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.

4.1.2. COMPONENT LOCATIONS

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KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S

4.1.2.1. 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

3 Platen Roller If the platen is dirty, clean it with a damp cloth then dry

4 Thermal Head If the thermal head is dirty, clean the printing surface with a

5 Sensors Document sensor (PS1), Read position sensor (sw44),

6 Glass If the glass is dirty, clean with a dry soft cloth. Refer to DOCUMENT FEEDER (P.21).
7 Abnormal, wear and tear

or loose parts

thoroughly.

thoroughly. Remove the paper and film cartridge before
cleaning.

cloth moistened with denatured alcohol (alcohol without
water), then dry thoroughly.

Recording paper/cover open sensor(SW1), Jam sensor
(SW3), Hook switch (SW2) Corfirm the operation of the
sensors.

Replace the part. Check if the screws are tight on all parts. —

Refer to DOCUMENT FEEDER (P.21).

—

Refer to THERMAL HEAD (P.22).

See COMPONENT LOCA TIONS (P.18) and

HOW TO REMOVE THE DIGITAL, ANALOG
AND POWER SUPPLY BOARD AND AC
INLET (P.33).

4.1.2.2. MAINTENANCE CYCLE

No. Item Cleaning Cycle Replacement

Cycle Procedure

1 Separation Roller (Ref. No. 141) 3 months 7 years* (10,000 documents) Refer to HOW TO REMOVE THE MOTOR

2 Separation Rubber (Ref . No. 11) 3 months 7 years (10,000 documents) Refer to COMPONENT LOCATIONS (P.18).
3 Feed Rollers (Ref. No. 9) 3 months 7 years (10,000 documents) Refer to DISASSEMBLY INSTRUCTIONS

4 Thermal Head (Ref. No. 95) 3 months 7 years (10,000 documents) Refer to HOW TO REMOVE THE

5 Platen Roller (Ref. No. 54) 3 months 7 years (10,000 documents) Refer to HOW TO REMOVE THE ROLLERS

6 Pickup Roller (Ref. No. 46) 3 months 7 years (10,000 documents) Refer to HOW TO REMOVE THE ROLLERS

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

BLOCK (P.35).

(P.23).

THERMAL HEAD AND CUTTER UNIT

(P.29).

(P.34).

(P.34).

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KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S

4.2. JAMS

4.2.1. RECORDING PAPER JAMS

When the recording paper has jammed in the unit

The display will show the following.

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

2

KX-FT901CX

skiptostep3

KX-FT903CX

Lift the green lever.

· The paper cutter will be released

5 Install the recording paper and close the cover securely by

pushing down on both sides.

3 Remove the recording paper.

4 Cut off the wrinkled portion.

20

KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S

4.2.2. DOCUMENT JAMS - SENDING

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

remove the jammed document carefully (

2 Close the cover securely by pushing down on both sides.

).

4.3. CLEANING

4.3.1. DOCUMENT FEEDER

Clean the document feeder when:

- Documents frequently misfeed.

- Smudges or black/white lines appear on the original
document when transmitting or copying.

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 ( ) and rubber flap ( )

with a cloth moistened with isopropyl rubbing alcohol, and let all
parts dry thoroughly. Clean the white plate (
glass (

) with a soft and dry cloth.

Caution:

Do not use paper products, such as paper towels or
tissues.

) and scanner

Note:

· Do not pull out the jammed paper forcibly before
opening the front cover.

4 Connect the power cord and the telephone line cord.

5 Close the cover securely by pushing down on both sides.

21

KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S

4.3.2. THERMAL HEAD

If smudges or black/white lines appear on a copied/received
document, check whether there is dust on the thermal head
and head cover. Clean them to remove the dust.

1 Disconnect the power cord and the telephone line cord.

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

remove the recording paper.

3 Clean the thermal head ( ) and head cover ( ) with a cloth

moistened with isopropyl rubbing alcohol, and let all parts dry
thoroughly.

Caution:

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

4 Connect the power cord and the telephone line cord.

5 Install the recording paper and close the cover securely by

pushing down on both sides.

22

KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S

5 DISASSEMBLY INSTRUCTIONS

5.1. DISASSEMBLY FLOW CHART

5.1.1. UPPER CABINET SECTION

CROSS REFERENCE:

A-1 : HOW TO REMOVE THE PAPER STACKER (KX-FT903 ONLY) (P.25)
A-2 : HOW TO REMOVE THE OPERATION PANEL BLOCK (P.26)
A-3 : HOW TO REMOVE THE OPERATION BOARD AND LCD (P.27)
A-4 : HOW TO REMOVE THE IMAGE SENSOR (P.28)
A-5 : HOW TO REMOVE THE THERMAL HEAD AND CUTTER UNIT (P.29)
A-6 : HOW TO REMOVE THE DOCUMENT TRAY (P.30)

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KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S

5.1.2. LOWER CABINET SECTION

CROSS REFERENCE:

A-1 : HOW TO REMOVE THE PAPER STACKER (KX-FT903 ONLY) (P.25)
A-2 : HOW TO REMOVE THE OPERATION PANEL BLOCK (P.26)
B-1 : HOW TO REMOVE THE BOTTOM FRAME (P.31)
B-2 : HOW TO REMOVE THE HANDSET CRADLE CA B INET AND SPEA KER (P.32)
B-3 : HOW TO REMOVE THE DIGITAL, ANALOG AND POWE R SUPPLY BOARD AND AC INLET (P.33)
B-4 : HOW TO REMOVE THE ROLLERS (P.34)
B-5 : HOW TO REMOVE THE MOTOR BLOCK (P.35)

24

KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S

6 DISASSEMBLY INSTRUCTIONS

6.1. HOW TO REMOVE THE PAPER STACKER (KX-FT903 ONLY)

25

KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S

6.2. HOW TO REMOVE THE OPERATION PANEL BLOCK

26

KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S

6.3. HOW TO REMOVE THE OPERATION BOARD AND LCD

27

KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S

6.4. HOW TO REMOVE THE IMAGE SENSOR

28

KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S

6.5. HOW TO REMOVE THE THERMAL HEAD AND CUTTER UNIT

29

KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S

6.6. HOW TO REMOVE THE DOCUMENT TRAY

30