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Panasonic KX-FT907BX-B Service Manual

Thermal fax with digital answering system
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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.
Thermal FAX with Digital Answering System
KX-FT907BX-B
KX-FT907BX-W
(Black Version)
(White Version)
(for Asia and Middle Near East )
ORDER NO. KMF0407790C3
© 2004 Panasonic Communications Co., Ltd. All
rights
reserved.
Unauthorized
distribution is a violation of law.
copying
and

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Summary of Contents for Panasonic KX-FT907BX-B

  • Page 1 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.

  • Page 2: Table Of Contents

    KX-FT907BX-B / KX-FT907BX-W CONTENTS Page Page 1 INTRODUCTION 8 CIRCUIT OPERATIONS 1.1. ABOUT LEAD FREE SOLDER (PbF: Pb free) 8.1. CONNECTION DIAGRAM 1.2. SAFETY PRECAUTIONS 8.2. GENERAL BLOCK DIAGRAM 1.3. INSULATION RESISTANCE TEST 8.3. CONTROL SECTION 1.4. FOR SERVICE TECHNICIANS 8.4.

  • Page 3: Introduction

    KX-FT907BX-B / KX-FT907BX-W 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).
  • Page 4 KX-FT907BX-B / KX-FT907BX-W 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)

  • Page 5: Safety Precautions

    KX-FT907BX-B / KX-FT907BX-W 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.

  • Page 6: Ac Caution

    KX-FT907BX-B / KX-FT907BX-W 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.

  • Page 7: Service Precautions

    KX-FT907BX-B / KX-FT907BX-W 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.

  • Page 8: Features And Specifications

    KX-FT907BX-B / KX-FT907BX-W 2 FEATURES AND SPECIFICATIONS 2.1. FEATURES General · Help function Display: − − − − HOW TO SET UP − − − − DIRECTORY − − − − AUTO ANSWER − − − − CALLER ID − − − − Telephone answering device operation ·...

  • Page 9: Specifications

    KX-FT907BX-B / KX-FT907BX-W 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:...

  • Page 10: Installation

    KX-FT907BX-B / KX-FT907BX-W 3 INSTALLATION 3.1. LOCATION OF CONTROLS 3.1.1. FRONT VIEW (1) Speaker (2) Document guides (3) Document feeder tray (4) Paper stacker The paper stacker may not be shown in all illustrations in this operating instructions. (5) Document exit...

  • Page 11: Control Panel

    KX-FT907BX-B / KX-FT907BX-W 3.1.2. CONTROL PANEL (1) [TONE] (14) [MUTE] · To change from pulse to tone temporarily during dialling · To mute your voice to the other party during a when your line has rotary pulse services. conversation. Press this button again to resume the conversation.

  • Page 12: Connections

    KX-FT907BX-B / KX-FT907BX-W 3.2. CONNECTIONS (1) Handset cord. (2) Telephone line cord. (3) Power cord (220-240 V, 50/60 Hz). (4) Paper stacker. Caution: · When you operate this product, the power outlet should be near the product and easily accessible.

  • Page 13: Installation

    KX-FT907BX-B / KX-FT907BX-W 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.

  • Page 14: Recording Paper

    KX-FT907BX-B / KX-FT907BX-W 3.3.3. RECORDING PAPER Open the cover by pressing the cover open button ( Close the cover securely by pushing down on. Press [FAX/START] to cut the paper. Install the recording paper. Insert the leading edge of the paper into the opening above the...
  • Page 15 KX-FT907BX-B / KX-FT907BX-W 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 —...

  • Page 16: Setting Your Logo

    KX-FT907BX-B / KX-FT907BX-W 3.3.5. SETTING YOUR LOGO The logo can be your company, division or name. To enter your logo Example: “BI LL” 1. Press [2] 2 times. 2. Press [4] 3 times. 3. Press [5] 3 times. 4. Press [ ] to move the cursor to the next space and press [5] 3 times.
  • Page 17 KX-FT907BX-B / KX-FT907BX-W 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 Instead of pressing the dial keys, you can select characters using 1. Press repeatedly to display the desired character.

  • Page 18: Maintenance

    KX-FT907BX-B / KX-FT907BX-W 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.
  • Page 19 KX-FT907BX-B / KX-FT907BX-W 4.1.2.1. MAINTENANCE LIST OPERATION CHECK REMARKS Document Path Remove any foreign matter such as paper. — Rollers If the roller is dirty, clean it with a damp cloth then dry Refer to DOCUMENT FEEDER (P.21). thoroughly. Platen Roller If the platen is dirty, clean it with a damp cloth then dry —...

  • Page 20: Jams

    KX-FT907BX-B / KX-FT907BX-W 4.2. JAMS 4.2.1. RECORDING PAPER JAMS When the recording paper has jammed in the unit The display will show the following. Open the cover by pressing the cover open button ( Install the recording paper and close the cover securely by pushing down on both sides.

  • Page 21: Cleaning

    KX-FT907BX-B / KX-FT907BX-W 4.2.2. DOCUMENT JAMS - SENDING 4.3. CLEANING Open the cover by pressing the cover open button ( ) and 4.3.1. DOCUMENT FEEDER remove the jammed document carefully ( Clean the document feeder when: - Documents frequently misfiled.

  • Page 22: Thermal Head

    KX-FT907BX-B / KX-FT907BX-W 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. Disconnect the power cord and the telephone line cord.

  • Page 23: Disassembly Instructions

    KX-FT907BX-B / KX-FT907BX-W 5 DISASSEMBLY INSTRUCTIONS 5.1. DISASSEMBLY FLOW CHART 5.1.1. UPPER CABINET SECTION CROSS REFERENCE: A-1: HOW TO REMOVE PAPER STACKER (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)

  • Page 24: Lower Cabinet Section

    KX-FT907BX-B / KX-FT907BX-W 5.1.2. LOWER CABINET SECTION CROSS REFERENCE: A-1: HOW TO REMOVE PAPER STACKER (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 CABINET AND SPEAKER (P.32) B-3: HOW TO REMOVE THE DIGITAL, ANALOG AND POWER SUPPLY BOARD AND AC INLET (P.33)

  • Page 25: Disassembly Instructions

    KX-FT907BX-B / KX-FT907BX-W 6 DISASSEMBLY INSTRUCTIONS 6.1. HOW TO REMOVE PAPER STACKER...

  • Page 26: How To Remove The Operation Panel Block

    KX-FT907BX-B / KX-FT907BX-W 6.2. HOW TO REMOVE THE OPERATION PANEL BLOCK...

  • Page 27: How To Remove The Operation Board And Lcd

    KX-FT907BX-B / KX-FT907BX-W 6.3. HOW TO REMOVE THE OPERATION BOARD AND LCD...

  • Page 28: How To Remove The Image Sensor

    KX-FT907BX-B / KX-FT907BX-W 6.4. HOW TO REMOVE THE IMAGE SENSOR...

  • Page 29: How To Remove The Thermal Head And Cutter Unit

    KX-FT907BX-B / KX-FT907BX-W 6.5. HOW TO REMOVE THE THERMAL HEAD AND CUTTER UNIT...

  • Page 30: How To Remove The Document Tray

    KX-FT907BX-B / KX-FT907BX-W 6.6. HOW TO REMOVE THE DOCUMENT TRAY...

  • Page 31: How To Remove The Bottom Frame

    KX-FT907BX-B / KX-FT907BX-W 6.7. HOW TO REMOVE THE BOTTOM FRAME...

  • Page 32: How To Remove The Handset Cradle Cabinet And Speaker

    KX-FT907BX-B / KX-FT907BX-W 6.8. HOW TO REMOVE THE HANDSET CRADLE CABINET AND SPEAKER...

  • Page 33: How To Remove The Digital, Analog And Power Supply Board And Ac Inlet

    KX-FT907BX-B / KX-FT907BX-W 6.9. HOW TO REMOVE THE DIGITAL, ANALOG AND POWER SUPPLY BOARD AND AC INLET...

  • Page 34: How To Remove The Rollers

    KX-FT907BX-B / KX-FT907BX-W 6.10. HOW TO REMOVE THE ROLLERS...

  • Page 35: How To Remove The Motor Block

    KX-FT907BX-B / KX-FT907BX-W 6.11. HOW TO REMOVE THE MOTOR BLOCK...
  • Page 36 KX-FT907BX-B / KX-FT907BX-W CROSS REFERENCE: HOW TO REMOVE THE THERMAL HEAD AND CUTTER UNIT (P.29)
  • Page 37 KX-FT907BX-B / KX-FT907BX-W...

  • Page 38: Installation Position Of The Lead Wires

    KX-FT907BX-B / KX-FT907BX-W 6.12. INSTALLATION POSITION OF THE LEAD WIRES...

  • Page 39: Installation Of Thermal Head

    KX-FT907BX-B / KX-FT907BX-W 6.13. INSTALLATION OF THERMAL HEAD...

  • Page 40: Troubleshooting Guide

    KX-FT907BX-B / KX-FT907BX-W 7 TROUBLESHOOTING GUIDE 7.1. TROUBLESHOOTING SUMMARY 7.1.1. TROUBLESHOOTING After confirming the problem by asking the user, troubleshoot according to the instructions and observe the following precautions. 7.1.2. 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.

  • Page 41: User Recoverable Errors

    KX-FT907BX-B / KX-FT907BX-W 7.2. USER RECOVERABLE ERRORS If the unit detects a problem, one or more of the following messages will appear on the display. The explanations given in the [ ] are for servicemen only. · When making a copy, the document being stored exceeds ·...

  • Page 42: Programming And Lists

    KX-FT907BX-B / KX-FT907BX-W 7.3. PROGRAMMING AND LISTS The programming functions are used to program the various features and functions of the machine, and to test the machine. Programming can be done in both the on-hook and off-hook conditions. This facilitates communication between the user and the service while programming the machine.
  • Page 43 KX-FT907BX-B / KX-FT907BX-W 7.3.3. SERVICE FUNCTION TABLE Code Function Set Value Effective Range Default Remarks Setting the pause time 001~600 X 100 msec 001~600 Selects the pause time in 100 msec steps. Setting the flash recall time 01~99 X 10 msec...
  • Page 44 KX-FT907BX-B / KX-FT907BX-W Code Function Set Value Effective Range Default Remarks Setting the interval 1: 75 msec 2:500 1, 2, 3 Sets the interval between the CED signal and between CED and the 300 msec 3:1000 msec subsequent 300 bps signal. (See "5. Unit can...

  • Page 45: Test Functions

    KX-FT907BX-B / KX-FT907BX-W 7.4. TEST FUNCTIONS Test Mode Type of Mode Code Function Operation after code input PRINT TEST Service Mode “8” “5” Prints a test pattern and checks the thermal head for abnormalities (missing dots, etc), and also checks the operation of the reception motor.(Refer to JOURNAL 3 START (P.81).)

  • Page 46: Dtmf Single Tone Transmit Selection

    KX-FT907BX-B / KX-FT907BX-W 7.4.1. DTMF SINGLE TONE TRANSMIT SELECTION When set to ON (=1), the 12 keys and transmission When set to OFF (=2), the 12 keys and transmission frequencies are as shown. frequencies are as shown. High Frequency (Hz)

  • Page 47: Remote Programming

    KX-FT907BX-B / KX-FT907BX-W 7.4.4. REMOTE PROGRAMMING If, after the call is connected, the customer describes the situation and it is determined that the problem can be corrected by making parameter changes, this function makes it possible to change parameters such as the user code and service code from another fax (using DTMF tones).
  • Page 48 KX-FT907BX-B / KX-FT907BX-W 7.4.4.2. PROGRAM MODE TABLE Code Function Set Value Default Remote setting Set the date and time mm/dd/yy AM/PM --------- Your logo --------- --------- Your telephone number --------- --------- Print transmission report ERROR/ON/OFF ERROR Auto receive mode TAD/FAX/FAX ONLY/TEL/FAX...
  • Page 49 KX-FT907BX-B / KX-FT907BX-W Code Function Set Value Default Remote setting FAX auto redial line disconnection time set 001~999 CNG transmit select 1:OFF/2:ALL/3:AUTO Time between CED and 300 bps 1:75/2:500/3:1s 75 ms Overseas DIS detection select 1:1st/2:2nd Receive error limit value set...
  • Page 50 KX-FT907BX-B / KX-FT907BX-W 7.4.5. USER MODE (The list below is an example of the SYSTEM SETUP LIST the unit prints out.) Note: The above values are the default values.
  • Page 51 KX-FT907BX-B / KX-FT907BX-W 7.4.6. SERVICE MODE SETTINGS (Example of a printed out list)

  • Page 52: Troubleshooting Details

    KX-FT907BX-B / KX-FT907BX-W 7.5. TROUBLESHOOTING DETAILS 7.5.1. 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"...
  • Page 53 KX-FT907BX-B / KX-FT907BX-W 7.5.3. TROUBLESHOOTING ITEMS TABLE FUNCTION SYMPTOM REFERENCE Printing Skewed receiving image See SKEWED RECEIVING IMAGE (P.59) Expanded print See EXPANDER PRINT (WHEN PRINTING) (P.60) Image is distorted See IMAGE IS DISTORTED (WHEN PRINTING) (P.58) Black or White vertical lines appear.
  • Page 54 KX-FT907BX-B / KX-FT907BX-W 7.5.4. ADF (AUTO DOCUMENT FEED) SECTION 7.5.4.1. NO DOCUMENT FEED CROSS REFERENCE: DIGITAL BOARD SECTION (P.82) POWER SUPPLY BOARD SECTION (P.96) SENSOR SECTION (P.100) TEST FUNCTIONS (P.45) DISASSEMBLY INSTRUCTIONS (P.25)

  • Page 55: Document Jam

    KX-FT907BX-B / KX-FT907BX-W 7.5.4.2. DOCUMENT JAM CROSS REFERENCE: SENSOR SECTION (P.100) DISASSEMBLY INSTRUCTIONS (P.25)
  • Page 56 KX-FT907BX-B / KX-FT907BX-W 7.5.4.3. MULTIPLE FEED When using thick paper etc., If the document will not feed. CROSS REFERENCE: DISASSEMBLY INSTRUCTIONS (P.25)
  • Page 57 KX-FT907BX-B / KX-FT907BX-W 7.5.4.4. SKEW CROSS REFERENCE: DISASSEMBLY INSTRUCTIONS (P.25)
  • Page 58 KX-FT907BX-B / KX-FT907BX-W 7.5.4.5. IMAGE IS DISTORTED (WHEN PRINTING) CROSS REFERENCE: READ SECTION (P.100) THERMAL HEAD SECTION (P.102) TEST FUNCTIONS (P.45) DISASSEMBLY INSTRUCTIONS (P.25)
  • Page 59 KX-FT907BX-B / KX-FT907BX-W 7.5.4.6. BLACK OR WHITE VERTICAL LINES APPEAR CROSS REFERENCE: DIGITAL BOARD SECTION (P.82) TEST FUNCTIONS (P.45) 7.5.4.7. SKEWED RECEIVING IMAGE...
  • Page 60 KX-FT907BX-B / KX-FT907BX-W 7.5.4.8. EXPANDER PRINT (WHEN PRINTING) CROSS REFERENCE: DISASSEMBLY INSTRUCTIONS (P.25) 7.5.4.9. WHEN COPYING OR PRINTING, AN ABNORMAL SOUND IS HEARD FROM THE UNIT...
  • Page 61 KX-FT907BX-B / KX-FT907BX-W CROSS REFERENCE: DISASSEMBLY INSTRUCTIONS (P.25) 7.5.5. COMMUNICATION SECTION Find the problem in the table shown below, and refer to the corresponding troubleshooting procedure in DEFECTIVE FACSIMILE SECTION (P.62). Symptom Content Possible cause The paper is not fed properly when faxing.
  • Page 62 KX-FT907BX-B / KX-FT907BX-W 7.5.5.1. DEFECTIVE FACSIMILE SECTION 7.5.5.1.1. TRANSMIT PROBLEM CROSS REFERENCE: ADF (AUTO DOCUMENT FEED) SECTION (P.54) OPERATION BOARD SECTION (P.99)
  • Page 63 KX-FT907BX-B / KX-FT907BX-W 7.5.5.1.2. SOMETIMES THERE IS A TRANSMIT PROBLEM...

  • Page 64: Reception Problem

    KX-FT907BX-B / KX-FT907BX-W 7.5.5.1.3. RECEPTION PROBLEM Confirm the following before starting troubleshooting. Is the recording paper installed properly? There is the receiving problem when sometimes the below errors may be occurred. OUT OF PAPER CHHECK COVER UNIT OVERHEATED (If it doesn´t return automatically, COVER OPEN, etc., reset the unit.) CHECK DOCUMENT Please refer to USER RECOVERABLE ERRORS (P.41) for the above items.
  • Page 65 KX-FT907BX-B / KX-FT907BX-W 7.5.5.1.4. THE UNIT CAN COPY, BUT CANNOT TRANSMIT/RECEIVE...
  • Page 66 KX-FT907BX-B / KX-FT907BX-W 7.5.5.1.5. UNIT CAN COPY, BUT CANNOT TRANSMIT/RECEIVE LONG DISTANCE OR INTERNATIONAL COMMUNICATIONS The following 2 causes can be considered for this. Cause 1: The other party is executing automatic dialling, the call has been received by this unit, and the CED or DIS signal response time is too long.
  • Page 67 KX-FT907BX-B / KX-FT907BX-W (Causes and Countermeasures) Countermeasure Side Echo Communication Problem Example Countermeasure Service Code Sending side Some time is needed to compare the level Add a dummy signal to the beginning Service code (521) of the receiving and sending signals for the of the training signal.
  • Page 68 KX-FT907BX-B / KX-FT907BX-W Fig. c (Countermeasure by Changing the Interval Between CED and DIS) Fig. d (C3ountemeasure by Ignoring the 1st DIS) <TX side signal> <RX side signal> <Countermeasure> 2nd / 3rd DCS / Training & delayed CFR / FTT...
  • Page 69 KX-FT907BX-B / KX-FT907BX-W 7.5.5.1.7. HOW TO RECORD FAX SIGNAL BY USING PC Recording FAX signal is one of the useful analysis measures to solve communication problems. The way of recording easily by using PC is shown as follows. 1. Equipment Parts No.
  • Page 70 KX-FT907BX-B / KX-FT907BX-W · Please compress the recording data when you send attaching to E-Mail because the data size will be so heavy. · Any software which can create WAV files is available.
  • Page 71 KX-FT907BX-B / KX-FT907BX-W 7.5.5.1.8. HOW TO OUTPUT THE JOURNAL REPORT: 1. Press repeatedly until the following is displayed. 2. Press 3. Press until the “ JOURNAL REPORT ” is displayed. 4. The report is printed out. Error code table: (1) CODE...
  • Page 72 KX-FT907BX-B / KX-FT907BX-W Countermeasure...
  • Page 73 KX-FT907BX-B / KX-FT907BX-W...
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  • Page 79 KX-FT907BX-B / KX-FT907BX-W...
  • Page 80 KX-FT907BX-B / KX-FT907BX-W 7.5.6. OTHER [HISTORY] Display Function DATA Date and time which are set by a user for the first time after purchase. TIME is the expiration from the first power on after purchase. KEY OPERATION Indicate 2-digit codes. (Refer to BUTTON CODE TABLE (P.46).1st.50: History of the key operation from 1st to 50th after purchase.
  • Page 81 KX-FT907BX-B / KX-FT907BX-W 7.5.7.1. JOURNAL 3 Descriptions: 1. ENCODE Compression Code: MH/MR 2. MSLT MSLT means Minimum Scan Line Time. Used only at the factory. 3. RESOLUTION (RESOL) Indicates the resolution of the communication. If multiple pages are transmitted or received, it indicates the last page´s resolution.

  • Page 82: Digital Board Section

    KX-FT907BX-B / KX-FT907BX-W 7.5.8. DIGITAL BOARD SECTION One of most difficult problems to deal with is when the system will not boot up. The symptom: No response when the power is turned on. (No LCD display, keys are not accepted.) Note: 1.
  • Page 83 KX-FT907BX-B / KX-FT907BX-W 7.5.8.1. DIGITAL BLOCK DIAGRAM The signal lines that must be normal for the system to boot up For signal lines other than these, even if they malfunction they are listed here [List 1]. do not directly affect booting up the system.
  • Page 84 KX-FT907BX-B / KX-FT907BX-W...
  • Page 85 KX-FT907BX-B / KX-FT907BX-W Normal Wave Patterns Remarks: When you use an oscilloscope to judge whether a signal to be tested is normal or NG, perform the signal check in exactly the same order as in [List 1]. (If the ASIC fails to access the ROM, the ASIC cannot access SRAM normally.) The digital circuit actually operates according to the timing combinations of these signals.
  • Page 86 KX-FT907BX-B / KX-FT907BX-W Note: Simply check the output level and make sure if the IC repeatedly outputs the signal at between 3.3V (H) and 0V (L). I/O and Pin No. Diagram...
  • Page 87 KX-FT907BX-B / KX-FT907BX-W...
  • Page 88 KX-FT907BX-B / KX-FT907BX-W After the power is turned on, the ASIC (CPU) initializes and checks each IC. The ROM, SRAM, and Modem are checked. If initialization fails for the ICs, the system will not boot up. CROSS REFERENCE: NG EXAMPLE (P.90)
  • Page 89 KX-FT907BX-B / KX-FT907BX-W 7.5.8.2. FLASH MEMORY (IC6) If the unit is working correctly but the TAM fanction can not work, you should check the Flash Memory.
  • Page 90 KX-FT907BX-B / KX-FT907BX-W 7.5.8.3. NG EXAMPLE...
  • Page 91 KX-FT907BX-B / KX-FT907BX-W 7.5.8.4. CHECK THE STATUS OF THE DIGITAL BOARD First, please check voltages and oscillation whether they are correct as follows.
  • Page 92 KX-FT907BX-B / KX-FT907BX-W...
  • Page 93 KX-FT907BX-B / KX-FT907BX-W 7.5.9. ANALOG BOARD SECTION The analog parts check is actually different from the digital parts check. The signal route is determined by the purpose of the check. For example, the handset TX route begins from the handset microphone and is output in the telephone line. In this route, it is mainly an analog signal.
  • Page 94 KX-FT907BX-B / KX-FT907BX-W Note: { }: Inside the digital board [ ]: Inside the operation board...
  • Page 95 KX-FT907BX-B / KX-FT907BX-W 7.5.9.2. DEFECTIVE ITS (INTEGRATED TELEPHONE SYSTEM) SECTION...
  • Page 96 KX-FT907BX-B / KX-FT907BX-W 7.5.10. POWER SUPPLY BOARD SECTION 1. Key components for troubleshooting Check the following parts first: F101, D101-D104, C106, Q101, PC101 and IC101. This comes from our experience with experimental tests. For example: power supply and lightning surge voltage test, withstanding voltage test, intentional short circuit test, etc.
  • Page 97 KX-FT907BX-B / KX-FT907BX-W 2. Troubleshooting Flow Chart...
  • Page 98 KX-FT907BX-B / KX-FT907BX-W 3. Broken parts repair details (D101, D102, D103, D104) Check for a short-circuit in terminal 4. If D101, D102, D103 and D104 are short-circuits, F101 will melt (open). In this case, replace all of the parts (D101, D102, D103, D104, F101).
  • Page 99 KX-FT907BX-B / KX-FT907BX-W 7.5.11. OPERATION BOARD SECTION 7.5.11.1. NO KEY OPERATION CROSS REFERENCE: TEST FUNCTIONS (P.45) 7.5.11.2. NO LCD INDICATION CROSS REFERENCE: TEST FUNCTIONS (P.45)
  • Page 100 KX-FT907BX-B / KX-FT907BX-W 7.5.12. SENSOR SECTION Refer to 6.5. SENSORS AND SWITCHES for the circuit descriptions. 7.5.12.1. CHECK THE DOCUMENT SENSOR (PS1)...."CHECK DOCUMENT" 7.5.12.2. CHECK THE READ POSITION (SW44)...."REMOVE DOCUMENT" 7.5.13. READ SECTION Refer to SCANNING BLOCK (P.117).
  • Page 101 KX-FT907BX-B / KX-FT907BX-W CROSS REFERENCE: TEST FUNCTIONS (P.45)
  • Page 102 KX-FT907BX-B / KX-FT907BX-W 7.5.14. THERMAL HEAD SECTION Refer to THERMAL HEAD (P.115). CROSS REFERENCE: SUPERVISION CIRCUIT FOR THE THERMAL HEAD TEMPERATURE (P.112) THERMAL HEAD (P.115)

  • Page 103: Circuit Operations

    KX-FT907BX-B / KX-FT907BX-W 8 CIRCUIT OPERATIONS 8.1. CONNECTION DIAGRAM...

  • Page 104: General Block Diagram

    KX-FT907BX-B / KX-FT907BX-W 8.2. GENERAL BLOCK DIAGRAM The control section will be explained as shown in the block diagram. 1. ASIC (IC1) Composed mainly of an address decoder, modem control section, CPU and RTC. Controls the general FAX operations. Controls the operation panel I/F.
  • Page 105 KX-FT907BX-B / KX-FT907BX-W 8.2.1. GENERAL BLOCK DIAGRAM...

  • Page 106: Control Section

    KX-FT907BX-B / KX-FT907BX-W 8.3. CONTROL SECTION 8.3.1. BLOCK DIAGRAM...
  • Page 107 KX-FT907BX-B / KX-FT907BX-W 8.3.2. ASIC (IC1) This custom IC is used for general FAX operations. 1. CPU This model uses a Z80 equivalent CPU operating at 8MHz. Many of the peripheral functions are handled by custom designed LSIs. As a result, the CPU only needs to process the result.
  • Page 108 KX-FT907BX-B / KX-FT907BX-W SIGNAL POWER SUPPLIED DESCRIPTION VOLTAGE TONE2 3.3V TONE OUTPUT VOLUREF 3.3V ANALOG REF VOLTAGE VOLUOUT 3.3V VOLUME OUTPUT VOLUIN 3.3V VOLUME INPUT XNMI 3.3V HIGH FIXED FMEMDO/IOP 3.3V OUTPUT PORT (CIS ON) VDD (3.3V) ----- POWER SOURCE (+3.3V)
  • Page 109 KX-FT907BX-B / KX-FT907BX-W SIGNAL POWER SUPPLIED DESCRIPTION VOLTAGE ADR12 3.3V CPU ADDRESS 12 RBA0 3.3V ROM/RAM BANK ADDRESS 0 RBA1 3.3V ROM/RAM BANK ADDRESS 1 RBA2 3.3V ROM/RAM BANK ADDRESS 2 RBA3 3.3V ROM/RAM BANK ADDRESS 3 RBA4 3.3V ROM/RAM BANK ADDRESS 4 RBA5 3.3V...
  • Page 110 KX-FT907BX-B / KX-FT907BX-W 8.3.3. ROM (IC2) This 512 KB ROM (OTPROM or MASKROM) has 32 KB of common area and bank area (BK4~BK 63). The capacity of each bank is 8 KB. The addresses of the common area are from 0000H to 7FFFH, and addresses 8000H to 9FFFH are for the bank area.
  • Page 111 KX-FT907BX-B / KX-FT907BX-W 8.3.6. SRAM and RTC BACK UP CIRCUIT 1. Function This unit has a lithium battery (BAT1) which works for the RAM (IC4) and Real Time Clock (RTC, Integrated into ASIC:IC1). The user parameter for auto dial numbers, the transmission ID, the system setup date and so on are stored in the RAM (IC4).
  • Page 112 KX-FT907BX-B / KX-FT907BX-W 8.3.7. SUPERVISION CIRCUIT FOR THE THERMAL HEAD TEMPERATURE 1. Function The thermistor changes the resistor according to the temperature and uses the thermistor´s characteristics. The output of pin 139 of IC1 becomes a low level. Then when it becomes a high level, it triggers point (A).

  • Page 113: Facsimile Section

    KX-FT907BX-B / KX-FT907BX-W 8.4. FACSIMILE SECTION 8.4.1. IMAGE DATA FLOW DURING FACSIMILE OPERATION COPY (Fine, Super-Fine, Half Tone) 1. Line information is read by CIS, via route (1), and is input to IC1. 2. In IC1, the data is adjusted to a suitable level for A/D conversion in the Analog Signal Processing Section, and via route (2) it is input to A/D conversion (8 bit).
  • Page 114 KX-FT907BX-B / KX-FT907BX-W 8.4.2. BLOCK DIAGRAM...
  • Page 115 KX-FT907BX-B / KX-FT907BX-W 8.4.3. THERMAL HEAD 1. Function This unit utilizes state of the art thermal printer technology. The recording paper (roll paper) is chemically processed. When the thermal head contacts this paper it emits heat momentarily, and black dots (appearing like points) are printed on the paper. If this continues, letters and/or diagrams appear, and the original document is reproduced.
  • Page 116 KX-FT907BX-B / KX-FT907BX-W...
  • Page 117 KX-FT907BX-B / KX-FT907BX-W 8.4.4. SCANNING BLOCK The scanning block of this device consists of a control circuit and a contact image sensor made up of a celfoc lens array, an LED array, and photoelectric conversion elements. When an original is inserted and the start button pressed, pin 17 of IC1 goes to a high level and the transistor Q11 turns on and pin 129 of IC1 goes to a low level and the transistor Q7 turns on.
  • Page 118 KX-FT907BX-B / KX-FT907BX-W 8.4.5. STEPPING MOTOR DRIVE CIRCUIT 1. Function One individual stepping motor is used for transmission and reception. It feeds the document or recording paper synchronized for reading or printing. 2. Circuit Operation During motor drive, gate array IC1 pin 124 becomes a high level, and Q4 and Q1 go ON as a result. +24 V is supplied to the motor coil.

  • Page 119: Gear Section

    KX-FT907BX-B / KX-FT907BX-W 8.4.6. GEAR SECTION This section shows how the motor-driven gear mechanism works in the main operations: FAX transmission, FAX reception the motor and copying. 8.4.6.1. MODE SELECTION When the motor attached to the Drive Motor Gear rotates counterclockwise (CCW), Swing Gear A engages the CAM and the CAM turns counterclockwise to select a mode.
  • Page 120 KX-FT907BX-B / KX-FT907BX-W 8.4.6.2. MODE OPERATION Once a mode is selected, the Drive Motor Gear rotates clockwise (CW) and then the Swing Gear A-1 controls the mode operation. A: Transmit mode Swing Gear A-1 engages G6 and conveys its drive power to the Separation Roller Gear for pre-feeding documents.
  • Page 121 KX-FT907BX-B / KX-FT907BX-W 8.4.6.3.2. SCANNING CROSS REFERENCE: SENSOR SECTION (P.100) 8.4.6.3.3. PRINTING Note: See SENSORS AND SWITCHES (P.123)
  • Page 122 KX-FT907BX-B / KX-FT907BX-W 8.4.6.3.4. COPYING CROSS REFERENCE: SENSOR SECTION (P.100)

  • Page 123: Sensors And Switches

    KX-FT907BX-B / KX-FT907BX-W 8.5. SENSORS AND SWITCHES All of the sensors and switches are shown below. Sensor Circuit Sensor Sensor or Switch Name Message Error Location DIGITAL Motor Position [CALL SERVICE 2] Cutter Position [PAPER JAMED] ANALOG Cover Open and Paper set...
  • Page 124 KX-FT907BX-B / KX-FT907BX-W 8.5.1. MOTOR POSITION SENSOR This sensor is a detection switch for recording the position of the CAM. Digital Board Signal (IC1-119 Pin) Home position Low level Other High level 8.5.2. CUTTER POSITION SENSOR Digital Board Signal (IC1-131 Pin)
  • Page 125 KX-FT907BX-B / KX-FT907BX-W 8.5.4. HOOK SWITCH (SW2) When the handset is lifted, the switch turns ON, and the signal at pin 43 of IC1 becomes low. When the handset is returned, the switch turns OFF, and the signal at pin 43 of IC1 becomes high.
  • Page 126 KX-FT907BX-B / KX-FT907BX-W 8.5.6. DOCUMENT TOP SW (SW44) When a document is brought to the read position, the SW becomes ON, and the input signal of IC1-16 pin (Operation) becomes a low level. When there is no document at the read position, the SW becomes OFF, and the input signal of IC1-16 pin (Operation) becomes a high level.

  • Page 127: Modem Section

    KX-FT907BX-B / KX-FT907BX-W 8.6. MODEM SECTION 8.6.1. FUNCTION The unit uses a 1 chip modem (IC5), enabling it to act as an interface between the control section for FAX sending and receiving, and the telephone line. During a sending operation, the digital image signals are modulated and sent to the telephone line.
  • Page 128 KX-FT907BX-B / KX-FT907BX-W 3. Facsimile Call Time Series As shown in the following diagram, the facsimile call time series is divided into five phases. Phase A : Call setting Call setting can be manual/automatic. Phase B : Pre-message procedure Phase B is a pre-processing procedure and sequence for confirming the status of the terminal, transmission route, etc. and for terminal control.
  • Page 129 KX-FT907BX-B / KX-FT907BX-W 6. Explanation of Technology a. G3 Communication Signals (T. 30 Binary Process) For G3 facsimile communication, this is the procedure for exchanging control signals between the sending and receiving machines both before and after transmission of image signals.
  • Page 130 KX-FT907BX-B / KX-FT907BX-W (Example) Bit No. DIS/DTC Transmitter - T.2 operation Receiver - T.2 operation Receiver - T.2 operation T.2 IOC = 176 T.2 IOC = 176 Transmitter - T.3 operation Receiver - T.3 operation Receiver - T.3 operation Reserved for future T.3 operation features.
  • Page 131 KX-FT907BX-B / KX-FT907BX-W Bit No. DIS/DTC Standard setting Recording width capability 1216 picture elements along Middle 1216 elements of 1728 picture elements scan line length of 151 ± mm 1% Recording width capability 864 picture elements along Middle 864 elements of 1728 picture elements scan line length of 107 ±...
  • Page 132 KX-FT907BX-B / KX-FT907BX-W b. Redundancy Compression Process Coding Mode This unit uses one-dimensional MH format.
  • Page 133 KX-FT907BX-B / KX-FT907BX-W 8.6.2. MODEM CIRCUIT OPERATION The modem (IC5) has all the hardware satisfying the ITU-T standards mentioned previously. When the ASIC IC1 (61) is brought to a low level, the modem (IC5) is chip-selected and the resistors inside IC are selected by the select signals from ASIC (IC1) ADR0-ADR4.

  • Page 134: Analog Unit Block Diagram

    KX-FT907BX-B / KX-FT907BX-W 8.7. ANALOG UNIT BLOCK DIAGRAM...

  • Page 135: Ncu Section

    KX-FT907BX-B / KX-FT907BX-W 8.8. NCU SECTION 8.8.1. GENERAL This section is the interface between the telephone line. It is composed of bell detection circuit, pulse dialing circuit, CPC detection circuit, line amplifier, sidetone circuits and Remote FAX activation circuit. 8.8.2.
  • Page 136 KX-FT907BX-B / KX-FT907BX-W 8.8.5. LINE AMPLIFIER AND SIDE TONE CIRCUITS 1. Circuit Operation The reception signal received as output from line transformer T1 is given as input to C17, R13, C11, R16, IC3(6-7) and IC3(2). Then it is input to the reception system at an amplifier gain of 2.5 dB from pin (2).

  • Page 137: Its (Integrated Telephone System) And Monitor Section

    KX-FT907BX-B / KX-FT907BX-W 8.9. ITS (INTEGRATED TELEPHONE SYSTEM) AND MONITOR SECTION 8.9.1. GENERAL The general ITS operation is performed by the modem IC5. The alarm tone, the key tone, the calling tone and the beep are output from the ASIC IC1 (digital board).
  • Page 138 KX-FT907BX-B / KX-FT907BX-W 8.10.2. CIRCUIT DIAGRAM...

  • Page 139: Operation Board Section

    (IC1) and ASIC (IC1: on the DIGITAL BOARD). The key matrix table is shown below. (Chip on board type) ASIC SW41 XLED13, 14 SW42 GATE ARRAY KSL0~4 KEYS KIN0 MATRIX KIN2~7 XLED11,12 LED5 XLED 15 READ POSITION SENSOR DOCUMENT SENSOR DIGITAL BOARD OPERATION BOARD KX-FT907BX-B/W OPERATION BOARD: BLOCK DIAGRAM...

  • Page 140: Lcd Section

    KX-FT907BX-B / KX-FT907BX-W 8.12. LCD SECTION The Gate Array (IC1) works only for writing the ASCII code from data bus (D4-D7). V0 is supplied for the crystal drive. R13 and R14 are density control resistors. Consequently, in this unit, the timing (positive clock) is generated by the LCD interface circuitry in the gate array (IC1).

  • Page 141: Power Supply Board Section

    KX-FT907BX-B / KX-FT907BX-W 8.13. POWER SUPPLY BOARD SECTION This power supply board uses the switching regulator method. [Input Circuit] The input current goes into the input rectifier circuit through the filter circuit. The filter circuit decreases the noise voltage and the noise electric field strength.
  • Page 142 KX-FT907BX-B / KX-FT907BX-W The following is an overview of how the power supply unit is controlled. The control method of this power supply unit is pulse width modulation. When Q is ON, the energy is charged in the transfer primary coil according to E .
  • Page 143 KX-FT907BX-B / KX-FT907BX-W [Surge Absorber Circuit] This circuit is for absorbing surge voltage generated by the transformer. [Control Circuit and Detecting Circuit] The control circuit amplifies the output with increased voltage detected in the error detecting circuit. Then it drives the main transistor.

  • Page 144: Reference Material Data

    KX-FT907BX-B / KX-FT907BX-W 9 REFERENCE MATERIAL DATA 9.1. TERMINAL GUIDE OF THE ICs TRANSISTORS AND DIODES...

  • Page 145: How To Replace The Flat Package Ic

    KX-FT907BX-B / KX-FT907BX-W 9.2. HOW TO REPLACE THE FLAT PACKAGE IC Even if you do not have the special tools (for example, a spot heater) to remove the Flat IC, with some solder (large amount), a soldering iron and a cutter knife, you can easily remove the ICs that have more than 100 pins.

  • Page 146: Flat Package Ic Installation Procedure

    KX-FT907BX-B / KX-FT907BX-W 9.2.3. FLAT PACKAGE IC INSTALLATION PROCEDURE 1. Temporarily fix the FLAT PACKAGE IC, soldering the two marked pins. *Check the accuracy of the IC setting with the corresponding soldering foil. 2. Apply flux to all pins of the FLAT PACKAGE IC.
  • Page 147 KX-FT907BX-B / KX-FT907BX-W 9.2.5. DIGITAL SPEAKERPHONE The digital speakerphone has different features from the analog speakerphone. The analog speakerphone switches between Tx or Rx. Either Tx or Rx is able to pass through a telephone line or speaker, depending on the Tx and Rx signal (voice) level. The higher-level signal (either TX or RX) can pass through the route.
  • Page 148 KX-FT907BX-B / KX-FT907BX-W Refer to ANALOG BOARD SECTION (P.93).

  • Page 149: Test Chart

    KX-FT907BX-B / KX-FT907BX-W 9.3. TEST CHART 9.3.1. ITU-T No.1 TEST CHART...
  • Page 150 KX-FT907BX-B / KX-FT907BX-W 9.3.2. ITU-T No.2 TEST CHART...

  • Page 151: Fixtures And Tools

    KX-FT907BX-B / KX-FT907BX-W 10 FIXTURES AND TOOLS...

  • Page 152: Cabinet, Mechanical

    KX-FT907BX-B / KX-FT907BX-W 11 CABINET, MECHANICAL 11.1. OPERATION PANEL SECTION...

  • Page 153: Upper Cabinet Section

    KX-FT907BX-B / KX-FT907BX-W 11.2. UPPER CABINET SECTION...

  • Page 154: Lower Cabinet

    KX-FT907BX-B / KX-FT907BX-W 11.3. LOWER CABINET CROSS REFERENCE: MOTOR SECTION (P.155)

  • Page 155: Motor Section

    KX-FT907BX-B / KX-FT907BX-W 11.4. MOTOR SECTION...

  • Page 156: Actual Size Of Screws

    KX-FT907BX-B / KX-FT907BX-W 11.5. ACTUAL SIZE OF SCREWS...

  • Page 157: Accessories And Packing Materials

    KX-FT907BX-B / KX-FT907BX-W 12 ACCESSORIES AND PACKING MATERIALS...

  • Page 158: Replacement Parts List

    DOC,TRY (KX-FT907BX-W) ABS-HB PFHX1578Z SHEET OPE,LEAD PFBX1218Z1 BUTTON,FUNCTION NAVI 13.1.2. UPPER CABINET SECTION Ref. Part No. Part Name & Description Remarks PFKM1049Z1 HANDSET CRADLE (KX-FT907BX-B) PS-HB PFKM1049Z2 HANDSET CRADLE (KX-FT907BX-W) PS-HB PFJS02Q64Z CONNECTOR,2PIN PFAS0P006Z SPEAKER PFKV1026Y1 COVER,CUTTER(KX-FT907BX-B) PS-HB PFKV1026Y3 COVER,CUTTER(KX-FT907BX-W)

  • Page 159: Digital Board Parts

    INSTRUCTION BOOK PFQW2167Z QUICK REFERENCE (Arabic) PFQW2168Z QUICK REFERENCE (Persia) Ref. Part No. Part Name & Description Remarks PFHA1001Z RUBBER,LEG PFZE1223Z-J GIFT BOX ASS´Y (KX-FT907BX-B) PFZE1224Z-J GIFT BOX ASS´Y (KX-FT907BX-W) PFMD1075Z FRAME,BOTTOM PFDF1051Z SHAFT POM-HB PFPN1338Z PAT R PFPN1337Z PAT L...
  • Page 160 KX-FT907BX-B / KX-FT907BX-W Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks PQLQR2KA20T COIL ERJ3GEYJ334 330K ERJ3GEYJ475 4.7M (BATTERY) ERJ3GEYJ222 2.2K BAT1 PFSU1004Z LITHIUM BATTERY ERJ3GEYJ101 ERJ3GEYJ101 (COMPONENTS PARTS) ERJ3GEYJ471 EXB38V101JV RESISTOR ARRAY...

  • Page 161: Analog Board Parts

    KX-FT907BX-B / KX-FT907BX-W Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks ECUV1E104ZFV C115 ECUV1C104KBV ECUV1E104ZFV C116 ECUV1H331JCV 330P ECUV1E104ZFV C120 ECUV1E104ZFV ECUV1E104ZFV C123 ECEA1HKA4R7 ECUV1H222KBV 0.0022 C126 ECUV1H102KBV 0.001 ECUV1E104ZFV C127 ECUV1C104KBV...

  • Page 162: Operation Board Parts

    KX-FT907BX-B / KX-FT907BX-W Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks ERJ3GEY0R00 ERJ3GEYJ331 ERJ3GEY0R00 ERJ3GEYJ680 ERJ3GEY0R00 ERJ3GEYJ103 ERJ3GEY0R00 ERJ3GEYJ105 ERJ3GEY0R00 ERJ3GEY0R00 (CAPACITORS) ERJ3GEY0R00 ECUV1H103KBV 0.01 ERJ3GEY0R00 ECUV1H103KBV 0.01 ERJ3GEY0R00 ECEA1HKA4R7 ERJ3GEY0R00 ECUV1H103KBV 0.01...

  • Page 163: Power Supply Board Parts

    KX-FT907BX-B / KX-FT907BX-W Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks EVQ11Y05B SWITCH ECUV1H121JCV 120P EVQ11Y05B SWITCH ECUV1H331JCV 330P EVQ11Y05B SWITCH ECUV1H681JCV 680P EVQ11Y05B SWITCH ECUV1C104KBV EVQ11Y05B SWITCH ECUV1H103KBV 0.01 EVQ11Y05B SWITCH...

  • Page 164: Fixtures And Tools

    KX-FT907BX-B / KX-FT907BX-W Ref. Part No. Part Name & Description Remarks R102 ERDS2J394 390k R103 ERDS2J394 390k R106 ERG2SJ470 R107 ERG2DJ154E 150k R108 ERDS2FTJ150 R109 ERDS2TJ100 R121 ERJ3GEYJ103 R122 ERJ3GEYJ271 R124 ERJ3GEYJ181 R126 ERJ3GEYJ823 R127 ERJ3GEYJ182 1.8k R128 ERJ6GEYJ101 R136...

  • Page 165: Printed Circuit Board

    KX-FT907BX-B / KX-FT907BX-W...
  • Page 166 KX-FT907BX-B / KX-FT907BX-W XTEST...

  • Page 167: Analog Board (Pcb2)

    KX-FT907BX-B / KX-FT907BX-W FLT3...
  • Page 168 KX-FT907BX-B / KX-FT907BX-W...

  • Page 169: Operation Board (Pcb3)

    KX-FT907BX-B / KX-FT907BX-W...
  • Page 170 KX-FT907BX-B / KX-FT907BX-W...

  • Page 171: Power Supply Board (Pcb4)

    KX-FT907BX-B / KX-FT907BX-W...

  • Page 172: For The Schematic Diagrams

    KX-FT907BX-B / KX-FT907BX-W 15 FOR THE SCHEMATIC DIAGRAMS Note: 1. DC voltage measurements are taken with an oscilloscope or a tester with a ground. 2. The schematic diagrams and circuit board may be modified at any time with the development of new technology.

  • Page 173: Memo

    KX-FT907BX-B / KX-FT907BX-W 16 MEMO...

  • Page 174: Schematic Diagram

    KX-FT907BX-B / KX-FT907BX-W 17 SCHEMATIC DIAGRAM 17.1. DIGITAL BOARD (PCB1) +3.3V/BATIN C114 Z0.1u MOTOR BLOCK +24V 1M SRAM 4M ROM A[0] D[0] RBA[4] RBA[3] A[1] D[1] RBA[2] A[2] D[2] +5VD RBA[0] A[3] D[3] A[7] RBA[1] A[4] D[4] A[6] A[8] A[5]...
  • Page 175 R103 +5VA K0.1u 6.8K 2.1V +3.3VD R118 IC12 (26) 100K +24V1 1 CD 2 FC2 3 FC1 4 VIN +3.3VD C126 K1000p CIS Power C127 R117 K0.1u R116 ON: 0V OFF: 3.3V TO CIS KX-FT907BX-B/W : DIGITAL BOARD (PCB1) (27)

  • Page 176: Analog Board (Pcb2)

    KX-FT907BX-B / KX-FT907BX-W 17.2. ANALOG BOARD (PCB2) +24VA 150K +2.0V J100p K0.022u Z0.1u 50V4.7u +12V K0.022u 5.6V 4.7V 220 1/4W 5.6V 120K Immunity countermeasure part 1.6K 2.2M 5.1K K3300p K0.056u 120K BELL DETECT J27p 470K +24V K0.039u FAX TX +24V...
  • Page 177 2.2K 1K2A Z0.1u +24V (11) RLY1 K0.1u (12) J220p 560K K0.033u (13) K0.1u K0.033u +2.0V FLT3 BEAD 2.2K 1 HSMIC- BEAD 2 HSSP+ BEAD 3 HSSP- BEAD 4 HSMIC+ (14) K0.1u K4700p 16V10u 2.5V (15) KX-FT907BX-B/W : ANALOG BOARD (PCB2)

  • Page 178: Operation Board (Pcb3)

    KX-FT907BX-B / KX-FT907BX-W...

  • Page 179: Power Supply Board (Pcb4)

    KX-FT907BX-B / KX-FT907BX-W...
  • Page 180 KX-FT907BX-B / KX-FT907BX-W KXFT907BXB KXFT907BXW...

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