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Panasonic KX-FLB758RU Service Manual
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Panasonic KX-FLB758RU Service Manual

Multi-function laser fax
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Multi-Function Laser Fax
KX-FLB758RU
(for Russia)
© 2003 Panasonic Communication Co., Ltd. All
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reserved.
distribution is a violation of law.
ORDER NO. KMF0307675C3
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Summary of Contents for Panasonic KX-FLB758RU

  • Page 1 ORDER NO. KMF0307675C3 Multi-Function Laser Fax KX-FLB758RU (for Russia) © 2003 Panasonic Communication Co., Ltd. All rights reserved. Unauthorized copying distribution is a violation of law.

  • Page 2: Table Of Contents

    KX-FLB758RU CONTENTS Page Page 1 INTRODUCTION 5.15. HOW TO REMOVE THE H.V.P.S 1.1. ABOUT LEAD FREE SOLDER (PbF: Pb free) 5.16. HOW TO REMOVE THE HEAT ROLLER AND EXIT 1.2. HOW TO RECOGNISE THAT Pb FREE SOLDER IS ROLLER USED 5.17.
  • Page 3 KX-FLB758RU 8.2. TERMINAL GUIDE OF THE ICs TRANSISTORS AND 12.11. ADF RELAY BOARD PARTS DIODES 12.12. PF SENSOR BOARD PARTS 8.3. HOW TO REPLACE A FLAT PACKAGE IC 12.13. CIS RELAY BOARD PARTS 8.4. DIGITAL BOARD SECTION 12.14. CIS SENSOR BOARD PARTS 8.5.

  • Page 4: Introduction

    KX-FLB758RU 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 5: How To Recognise That Pb Free Solder Is Used

    KX-FLB758RU 1.2. HOW TO RECOGNISE 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) Marked (Digital Board : Component View)

  • Page 6: Translation Lists

    KX-FLB758RU 1.3. TRANSLATION LISTS 1.3.1. HELP FUNCTION 1.3.2. LCD MESSAGES...
  • Page 7 KX-FLB758RU 1.3.3. REPORTS...

  • Page 8: Safety Precautions

    KX-FLB758RU 1.4. 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 9: Ac Caution

    KX-FLB758RU 1.8. 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. Wind the earth lead around the core 5 times.
  • Page 10 KX-FLB758RU 1.9.2. 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 11: Service Precautions

    KX-FLB758RU 1.10. SERVICE PRECAUTIONS 1.10.1. 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.

  • Page 12: Features And Specifications

    KX-FLB758RU 2 FEATURES AND SPECIFICATIONS 2.1. FEATURES General · Help function Display: 1. FEATURE LIST 2. DIRECTORY 3. FAX RECEIVING · LCD (Liquid Crystal Display) readout · TAM (Telephone answering machine) interface Plain Paper Facsimile Machine · Letter/A4/Legal, G3 compatible ·...

  • Page 13: Specifications

    KX-FLB758RU 2.2. 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: 208 mm (8 3/16”) Effective Printing Width: A4: 202mm Letter/Legal: 208mm Transmission Time*: Approx.

  • Page 14: Installation

    KX-FLB758RU 3 INSTALLATION 3.1. LOCATION OF CONTROLS 3.1.1. OVERVIEW Note: *The paper stacker may not be shown in all illustrations. 3.1.2. REAR VIEW...

  • Page 15: Control Panel

    KX-FLB758RU 3.1.3. CONTROL PANEL...

  • Page 16: Connections

    KX-FLB758RU 3.2. CONNECTIONS (1) Connect the handset cord. The jack on the longer, uncoiled end of the handset cord should be connected to the unit. (2) Connect the telephone line cord. (3) Connect the power cord. · When the power is turned on for the first time, the unit will print some basic information.

  • Page 17: Connecting To A Computer

    3.3. CONNECTING TO A COMPUTER Panasonic Multi-Function Station enables your fax machine to carry out the following functions: — Printing on plain paper, transparencies, labels and envelopes — Scanning documents and converting an image into text with Readiris OCR software —...

  • Page 18: Installation

    KX-FLB758RU 3.4. INSTALLATION 3.4.1. 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 19: Paper Stacker

    KX-FLB758RU 3.4.2. PAPER STACKER Line up the slots in the paper stacker with the pegs on the bottom of the unit, then slide until locked. Open the paper stacker extender when using legal size paper. · The paper stacker can hold up to approx. 100 sheets of printed paper.

  • Page 20: Installing The Recording Paper

    KX-FLB758RU 3.4.4. INSTALLING THE RECORDING PAPER Letter, legal or A4 size recording paper can be used for fax messages. The unit can hold up to 150 sheets of 60 g/m to 75 g/m (16 lb. to 20 lb.) paper or 120 sheets of 90 g/m (24 lb.) paper.See the note for paper specifications.

  • Page 21: Adding Paper

    KX-FLB758RU 3.4.4.1. Adding Paper Remove all of the installed paper. Add paper to the stack of paper you removed and straighten. Follow steps 1 to 4 above. 3.4.5. DOCUMENTS THE UNIT CAN FEED 3.4.5.1. USING THE ADF (AUTO DOCUMENT FEEDER) Note: ·...
  • Page 22 KX-FLB758RU 3.4.6. TO SELECT CHARACTERS WITH THE DIAL KEYPAD 3.4.7. TO SELECT CHARACTERS USING THE (+) OR (-) KEY...

  • Page 23: Setting Your Logo

    KX-FLB758RU 3.4.8. SETTING YOUR LOGO The logo can be your company, division or name.
  • Page 24 We recommend you replace the drum unit every third time you replace the toner cartridge.To check the drum life and quality, please print the printer test list. To ensure that the unit operates properly, we recommend the use of Panasonic toner cartridge (Model No. KX-FA76A) and drum unit (Model No. KX-FA78A).
  • Page 25 Remove the protection bar from the drum unit. With “Panasonic” face up on the toner cartridge, match the red arrows on the cartridge and the drum unit. Slide the tab on the toner cartridge into the slot of the drum unit.
  • Page 26 KX-FLB758RU The toner cartridge is installed when the triangles match. Install the drum and toner unit by holding the tabs. · If the lower glass is dirty, clean it with a soft and dry cloth. Close the printer cover by pushing down on both sides until locked.

  • Page 27: Installing Multi-Function Station Software

    To uninstall the software 1. Click [Start]. 2. Point to [Settings], then click [Control Panel]. 3. Double-click [Add/Remove Programs]. 4. Select [Panasonic Multi-Function Station] from the list. 5. Click [Add/Remove...] (Windows 95/98/Me/NT4.0)/ [Change/Remove...] (Windows 2000/XP), then follow the instructions on the screen.

  • Page 28: Maintenance

    KX-FLB758RU 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 29 KX-FLB758RU 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 MAINTENANCE CHECK thoroughly. ITEMS/COMPONENT LOCATIONS(P.28).DOCUMENT FEEDER ROLLERS(P.35)

  • Page 30: Printing

    KX-FLB758RU 4.2. PRINTING · The motor pinion rotates in the direction shown in the figure. · The gears of fixing and developing parts are driven by the GEAR 1A. · The GEAR PAPER FEED ROLLER drives the roller. · The GEAR CLUTCH runs idle and GEAR PICKUP PAPER is still.

  • Page 31: Printing (Paper Pick Up)

    KX-FLB758RU 4.3. PRINTING (PAPER PICK UP) During printing · When the SOLENOID is turned ON, the HOOK GEAR FIX is hooked on the RING of GEAR CLUTCH. It causes the GEAR PICKUP PAPER to rotate. · At the same time, CAM´s rotation lifts up the PLATE LIFT PAPER. The recording paper is pressed by the PICKUP ROLLER and the top paper is separated and fed.

  • Page 32: Scanning (Adf)

    KX-FLB758RU 4.4. SCANNING (ADF) · DOCUMENT TRANSMISSION (ADF) The tip of the document is sent to a point of contact between the separation roller and the separation pad through the document feed roller, then the document is fed there separately. The document transference roller carries the document and the CIS reads it through the glass.

  • Page 33: Maintenance

    KX-FLB758RU 4.5. MAINTENANCE If a black line, a white line or a dirty pattern appears on your recording paper, on your original, or on the fax document received by the other party, clean the white plate, scanner glass and lower glass.
  • Page 34 KX-FLB758RU Clean the lower glass with a soft and dry cloth. Reinstall the drum and toner unit by holding the tabs. Close the printer cover, until locked, by pushing down on both sides. Reconnect the power cord and the telephone line cord.

  • Page 35: Document Feeder Rollers

    KX-FLB758RU 4.5.3. DOCUMENT FEEDER ROLLERS If misfeeding of your original occurs frequently, clean the document feeder rollers. Lift, and hold open the ADF cover. Clean the document feeder rollers with a soft and dry cloth. Close the ADF cover.

  • Page 36: Document Jams

    KX-FLB758RU 4.6. DOCUMENT JAMS If the unit does not release the document during feeding, remove the jammed document as follows. Lift, and hold open the ADF cover. · Do not pull out the jammed document forcibly before lifting the ADF cover.

  • Page 37: Recording Paper Jams

    KX-FLB758RU 4.7. RECORDING PAPER JAMS If the unit does not eject any recording paper during reception or copying, the recording paper has jammed and the display will show the following massage. The display will show the following. Push the front cover open button then open the front cover.
  • Page 38 KX-FLB758RU Close the front cover, until locked, by pushing down on both ends. Remove the recording paper. Straighten and reinsert it into the recording paper entrance.

  • Page 39: Disassembly Instructions

    KX-FLB758RU 5 DISASSEMBLY INSTRUCTIONS 5.1. UPPER MAIN CABINET SECTION CROSS REFERENCE: A1: HOW TO REMOVE THE PAPER TRAY, DOCUMENT COVER AND PAPER GUIDE (P.43) A2: HOW TO REMOVE THE PRINTER COVER (P.44) A3: HOW TO REMOVE THE PICK UP ROLLER ASS’Y (P.45) A4: HOW TO REMOVE THE DUCT UNIT AND FAN MOTOR (P.46)

  • Page 40: Lower Main Cabinet Section

    KX-FLB758RU 5.2. LOWER MAIN CABINET SECTION CROSS REFERENCE: A1: HOW TO REMOVE THE PAPER TRAY, DOCUMENT COVER AND PAPER GUIDE (P.43) A5: HOW TO REMOVE THE BOTTOM PLATE (P.46) A6: HOW TO REMOVE THE ANALOG BOARD AND LSU (P.47) A7: HOW TO REMOVE THE DIGITAL BOARD AND MOTOR DRIVER BOARD (P.47) B1: HOW TO REMOVE THE POWER BOARD, AND VARISTOR BOARD AND AC INLET (P.48)

  • Page 41: Document Cover (Adf) Section

    KX-FLB758RU 5.3. DOCUMENT COVER (ADF) SECTION CROSS REFERENCE: A1: HOW TO REMOVE THE PAPER TRAY, DOCUMENT COVER AND PAPER GUIDE (P.43) C1: HOW TO REMOVE THE WHITE SHEET (P.52) C2: HOW TO REMOVE THE DOCUMENT GUIDE (P.53) C3: HOW TO REMOVE THE ADF RELAY BOARD (P.53) C4: HOW TO REMOVE THE FEED ROLLER AND ADF SEPARATION ROLLER (P.54)

  • Page 42: Printer Cover Section

    KX-FLB758RU 5.4. PRINTER COVER SECTION CROSS REFERENCE: A1: HOW TO REMOVE THE PAPER TRAY, DOCUMENT COVER AND PAPER GUIDE (P.43) D1: HOW TO REMOVE THE TRANSFER ROLLER (P.57) D2: HOW TO REMOVE THE OPERATION BOARD (P.58) D3: HOW TO REMOVE THE SCANNER GLASS UNIT AND CIS (P.59) D4: HOW TO REMOVE THE CIS RELAY BOARD AND CIS SENSOR BOARD (P.60)

  • Page 43: How To Remove The Paper Tray, Document Cover And Paper Guide

    KX-FLB758RU 5.5. HOW TO REMOVE THE PAPER TRAY, DOCUMENT COVER AND PAPER GUIDE...

  • Page 44: How To Remove The Printer Cover

    KX-FLB758RU 5.6. HOW TO REMOVE THE PRINTER COVER...

  • Page 45: How To Remove The Pick Up Roller Ass

    KX-FLB758RU 5.7. HOW TO REMOVE THE PICK UP ROLLER ASS’Y...

  • Page 46: How To Remove The Duct Unit And Fan Motor

    KX-FLB758RU 5.8. HOW TO REMOVE THE DUCT UNIT AND FAN MOTOR 5.9. HOW TO REMOVE THE BOTTOM PLATE...

  • Page 47: How To Remove The Analog Board And Lsu

    KX-FLB758RU 5.10. HOW TO REMOVE THE ANALOG BOARD AND LSU 5.11. HOW TO REMOVE THE DIGITAL BOARD AND MOTOR DRIVER BOARD...

  • Page 48: How To Remove The Power Board, And Varistor Board And Ac Inlet

    KX-FLB758RU 5.12. HOW TO REMOVE THE POWER BOARD, AND VARISTOR BOARD AND AC INLET 5.13. HOW TO REMOVE THE MAIN FRAME...

  • Page 49: How To Remove The Registration Roller

    KX-FLB758RU 5.14. HOW TO REMOVE THE REGISTRATION ROLLER 5.15. HOW TO REMOVE THE H.V.P.S...

  • Page 50: How To Remove The Heat Roller And Exit Roller

    KX-FLB758RU 5.16. HOW TO REMOVE THE HEAT ROLLER AND EXIT ROLLER 5.17. HOW TO REMOVE THE PRESSURE ROLLER...

  • Page 51: How To Remove The Motor Block

    KX-FLB758RU 5.18. HOW TO REMOVE THE MOTOR BLOCK...

  • Page 52: How To Remove The White Sheet

    KX-FLB758RU 5.19. HOW TO REMOVE THE WHITE SHEET...

  • Page 53: How To Remove The Document Guide

    KX-FLB758RU 5.20. HOW TO REMOVE THE DOCUMENT GUIDE 5.21. HOW TO REMOVE THE ADF RELAY BOARD...

  • Page 54: How To Remove The Feed Roller And Adf Separation Roller

    KX-FLB758RU 5.22. HOW TO REMOVE THE FEED ROLLER AND ADF SEPARATION ROLLER...

  • Page 55: How To Remove The Top Cover And Conveyor Block

    KX-FLB758RU 5.23. HOW TO REMOVE THE TOP COVER AND CONVEYOR BLOCK...

  • Page 56: How To Remove The Adf Motor And Pf Sensor Board

    KX-FLB758RU 5.24. HOW TO REMOVE THE ADF MOTOR AND PF SENSOR BOARD 5.25. HOW TO REMOVE THE ADF EXIT ROLLER AND DRIVE ROLLER...

  • Page 57: How To Remove The Transfer Roller

    KX-FLB758RU 5.26. HOW TO REMOVE THE TRANSFER ROLLER...

  • Page 58: How To Remove The Operation Board

    KX-FLB758RU 5.27. HOW TO REMOVE THE OPERATION BOARD...

  • Page 59: How To Remove The Scanner Glass Unit And Cis

    KX-FLB758RU 5.28. HOW TO REMOVE THE SCANNER GLASS UNIT AND CIS...

  • Page 60: How To Remove The Cis Relay Board And Cis Sensor Board

    KX-FLB758RU 5.29. HOW TO REMOVE THE CIS RELAY BOARD AND CIS SENSOR BOARD 5.30. HOW TO REMOVE THE CARRIAGE MOTOR AND SCAN MOTOR DRIVE BOARD...

  • Page 61: Notes For Assembling

    KX-FLB758RU 5.31. NOTES FOR ASSEMBLING 5.31.1. PINCH ROLLER SPRING 5.31.2. FAN MOTOR...
  • Page 62 KX-FLB758RU 5.31.3. SCANNER GLASS ASS’Y...
  • Page 63 KX-FLB758RU 5.31.4. FCC (DIGITAL BOARD)

  • Page 64: Installation Position Of The Lead

    KX-FLB758RU 5.32. INSTALLATION POSITION OF THE LEAD...
  • Page 65 KX-FLB758RU...
  • Page 66 KX-FLB758RU...
  • Page 67 KX-FLB758RU...
  • Page 68 KX-FLB758RU...

  • Page 69: Troubleshooting Guide

    KX-FLB758RU 6 TROUBLESHOOTING GUIDE 6.1. 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. DISPLAY MESSAGE CAUSE AND REMEDY ·...
  • Page 70 KX-FLB758RU DISPLAY MESSAGE CAUSE AND REMEDY · The unit is warming up. Wait for a while. · The other party´s fax machine is busy or has run out of recording paper. Try again. · The document is jammed. Remove the jammed document.

  • Page 71: Programming And Lists

    KX-FLB758RU 6.2. PROGRAMMING AND LISTS The programming functions are used to program the various features and functions of the machine, and to test the machine. This facilitates communication between the user and the service man while programming the unit. 6.2.1.
  • Page 72 KX-FLB758RU 6.2.3. SERVICE FUNCTION TABLE Code Function Set Value Effective Default Remarks Range Pause time set X 100 msec 001~600 ---------- Flash time X 10 ms 01~99 ---------- Dial speed select 1:10pps 1, 2 ---------- 2:20pps CED frequency select 1:2100 Hz...
  • Page 73 KX-FLB758RU Code Function Set Value Effective Default Remarks Range Transmit speed selection 1: 33600BPS 1~14 Adjusts the speed to start training during FAX 2: 31200BPS transmission. Refer to SOMETIME THERE IS A 3: 28800BPS TRANSMIT PROBLEM (P.118) 4: 26400BPS 5: 24000BPS...

  • Page 74: Test Functions

    KX-FLB758RU 6.3. TEST FUNCTIONS The codes listed below can be used to perform simple checks of some of the unit’s functions. When complaints are received from customers, they provide an effective tool for identifying the locations and causes of malfunctions.

  • Page 75: Dtmf Single Tone Transmit Selection

    KX-FLB758RU Test Mode Type of Mode Code Function Operation after code input PRINT TEST Service Mode “8” “5” “2” 1. Press “852” then the SET key in the service mode. 2. As “PATNO =” is displayed on the LCD, enter the test pattern No. and press...

  • Page 76: Print Test Pattern

    KX-FLB758RU 6.3.3. PRINT TEST PATTERN 1. NO. 01 3. NO.03 2. NO.07 4. NO.09...

  • Page 77: Remote Programming

    KX-FLB758RU 6.4. 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 78 KX-FLB758RU 6.4.2. PROGRAM MODE TABLE Code Function Set Value Default Remote Setting Set date and time dd/mm/yy hh:mm 01/Jan/2003 Your logo --------- None Your fax telephone number --------- None Transmission report mode 1:Error / 2:ON / 3:OFF FAX ring count...
  • Page 79 KX-FLB758RU Code Function Set Value Default Remote Setting Sensor test --------- --------- Print test pattern --------- --------- Top margin Left margin History list 1:Start --------- Journal 2 --------- --------- Journal 3 --------- --------- Setup list 1:Start --------- Journal list 1:Start...
  • Page 80 KX-FLB758RU 6.4.3. 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 81 KX-FLB758RU 6.4.4. SERVICE MODE SETTINGS (Example of a printed out list) Note: The above values are the default values.
  • Page 82 KX-FLB758RU 6.4.5. HISTORY (Example of a printed out list) Note: See the following descriptions of this report. Item No. (1) ~ (49) are corresponding to the listed items in DESCRIPTIONS OF THE HISTORY REPORT(P.83).
  • Page 83 KX-FLB758RU 6.4.5.1. DESCRIPTIONS OF THE HISTORY REPORT (1) ROM VERSION FLASH ROM version (2) SUM FLASH ROM internal data calculation. (3) YOUR LOGO The user logo recorded in the unit. If it is not recorded, NONE will be displayed. (4) YOUR TELEPHONE NUMBER The user telephone number recorded in the unit.
  • Page 84 KX-FLB758RU interface, NONE will be printed.) (27) NUMBER OF PC-PRINT The number of times multifunction was used for the Printer. (The number of pages printed. If the unit does not have a PC interface, NONE will be printed.) (28) Not used...

  • Page 85: Troubleshooting Details

    KX-FLB758RU 6.5. TROUBLESHOOTING DETAILS 6.5.1. OUT LINE Troubleshooting is for recovering quality and reliability by determining the broken component and replacing, adjusting or cleaning it as required. First, determine the problem then decide the troubleshooting method. If you have difficulty finding the broken part, determine which board is broken.
  • Page 86 KX-FLB758RU 6.5.3. INITIALIZATION There are two types of initialization, one is the short initialization (about 3 seconds) and the other is the long initialization (about 10 seconds). The short initialization makes the unit enter the standby mode. The long initialization makes the unit enter the...
  • Page 87 KX-FLB758RU 6.5.4. SIMPLE CHECK LIST Note: Check according to the service code referring to TEST FUNCTIONS (P.74)
  • Page 88 KX-FLB758RU 6.5.5. SIMPLIFIED TROUBLESHOOTING GUIDE 6.5.5.1. PRINTING Symptom Cause Countermeasure 1 GHOST IMAGE (P.97) Failed drum unit Replace drum unit Failed transfer unit Check the transfer roller and spring Failed the high-voltage terminal Check the high-voltage terminal Failed the high voltage power supply board Go to HIGH VOLTAGE SECTION (P.150)
  • Page 89 KX-FLB758RU 6.5.5.2. RECORDING PAPER FEED Symptom Cause Countermeasure 1 MULTIPLE FEED (P.105) Dirty or failed the pickup roller Clean or replace the pickup roller Dirty or failed the pickup rubber Clean or replace the pickup rubber 2 THE RECORDING PAPER...
  • Page 90 KX-FLB758RU 6.5.5.3. COPY AND FAX Symptom Cause Countermeasure 1 NO DOCUMENT FEED Failed the document sensor lever Replace the document sensor lever (NO DOCUMENT Failed the document sensor Go to DOCUMENT SENSOR..”CHECK DOCUMENT” AND FEED,DOCUMENT JAM PAPER FEED SENSOR..”REMOVE DOCUMENT” (P.161)
  • Page 91 KX-FLB758RU 6.5.5.4. Others Symptom Cause Countermeasure 1 Cannot print legal size Not selected the legal mode Select the legal mode in the user programming mode 2 ´CHECK DRUM´ on the No connection between the drum unit and the Replace the drum unit or the terminal of whole unit...
  • Page 92 KX-FLB758RU 6.5.6. CALL SERVICE TROUBLESHOOTING GUIDE Call Service related error is most frequent. Call Service 1 ----- Polygon doesn’t rotate..Refer to LSU (Laser Scanning Unit) SECTION (P.183). · First, listen to the sound. If rotation sound isn´t heard, check 24V line, POLON signal and POLCLK signal. If even a little of sound is heard, check XREADY signal.
  • Page 93 KX-FLB758RU 6.5.6.1. CALL SERVICE 1 "CALL SERVICE 1" means that the polygon motor inside the LSU does not rotate. The rotation of the polygon motor is detected by IC610-90pin (XREADY).
  • Page 94 KX-FLB758RU 6.5.6.2. CALL SERVICE 2 "CALL SERVICE 2" means that the synchronous signal out of the LSU cannot be detected. The synchronous signal out of the LSU is detected by IC 610-89pin. (XHSYNC) Note: As for the "Pulse" waveform of the above flow chart, see the timing chart.
  • Page 95 KX-FLB758RU 6.5.6.3. CALL SERVICE 3 "CALL SERVICE 3" means that the temperature of the fuser does not rise up to or exceed a constant temperature. The temperature is monitored with the thermistor inside the fuser and detected with the voltage input into IC 604-Y6pin.
  • Page 96 KX-FLB758RU 6.5.6.4. CALL SERVICE 4 "CALL SERVICE 4" means that the FAN does not run or the running of the FAN cannot be detected normally. The running of the FAN is detected by IC 610-93pin. "CALL SERVICE 4" is displayed when it detects NG five times continuously.
  • Page 97 KX-FLB758RU 6.5.7. PRINT 6.5.7.1. GHOST IMAGE CROSS REFERENCE: HIGH VOLTAGE SECTION(P.150) POWER SUPPLY BOARD SECTION(P.155)
  • Page 98 KX-FLB758RU 6.5.7.2. DARK OR WHITE VERTICAL LINE Note: When wiping the lower glass, reflecting mirror and LSU lens, use a dry and soft cloth. CROSS REFERENCE: LSU SECTION (P.147)
  • Page 99 KX-FLB758RU 6.5.7.3. DARK OR WHITE HORIZONTAL LINE CROSS REFERENCE: HIGH VOLTAGE SECTION (P.150)
  • Page 100 KX-FLB758RU 6.5.7.4. DIRTY OR HALF DARKNESS BACKGROUND CROSS REFERENCE: HIGH VOLTAGE SECTION (P.150)
  • Page 101 KX-FLB758RU 6.5.7.5. BLACK PRINT CROSS REFERENCE: HIGH VOLTAGE SECTION (P.150) LSU SECTION (P.147)

  • Page 102: Light Print

    KX-FLB758RU 6.5.7.6. LIGHT PRINT CROSS REFERENCE: HIGH VOLTAGE SECTION (P.150)
  • Page 103 KX-FLB758RU 6.5.7.7. BLACK DENSITY IS LIGHT OR UNEVEN. CROSS REFERENCE: HIGH VOLTAGE SECTION (P.150)
  • Page 104 KX-FLB758RU 6.5.7.8. BLANK PRINT 6.5.7.9. BLACK OR WHITE POINT...
  • Page 105 KX-FLB758RU 6.5.8. RECORDING PAPER FEED 6.5.8.1. MULTIPLE FEED 6.5.8.2. THE RECORDING PAPER IS WAVED OR WRINKLED...
  • Page 106 KX-FLB758RU 6.5.8.3. SKEW...
  • Page 107 KX-FLB758RU 6.5.8.4. THE RECORDING PAPER DOES NOT FEED CROSS REFERENCE: SENSOR SECTION (P.141) MOTOR SECTION (P.144)
  • Page 108 KX-FLB758RU 6.5.8.5. THE RECORDING PAPER JAM CROSS REFERENCE: PAPER EXIT SENSOR..“PAPER JAMMED” (P.191) FAN MOTOR SECTION (P.180) REGIST SENSOR..”FAILED PICK UP” (P.190)
  • Page 109 KX-FLB758RU 6.5.8.6. BACK SIDE OF THE RECORDING PAPER IS DIRTY CROSS REFERENCE: HIGH VOLTAGE SECTION (P.150)
  • Page 110 KX-FLB758RU 6.5.9. ADF (Auto document feed) SECTION 6.5.9.1. NO DOCUMENT FEED,DOCUMENT JAM and MULTIPLE DOCUMENT FEED. CROSS REFERENCE: SENSOR SECTION (P.141)
  • Page 111 KX-FLB758RU CROSS REFERENCE: MOTOR SECTION (P.144)
  • Page 112 KX-FLB758RU 6.5.9.2. SKEW 6.5.9.2.1.
  • Page 113 KX-FLB758RU 6.5.9.2.2. SCANNER GLASS 6.5.9.3. THE SENT FAX DATA IS SKEWED CROSS REFERENCE: SKEW (P.112) 6.5.9.4. THE RECEIVED FAX DATA IS SKEWED CROSS REFERENCE: SKEW (P.106)
  • Page 114 KX-FLB758RU 6.5.9.5. THE RECEIVED OR COPIED DATA IS EXPANDED 6.5.9.6. BLACK OR WHITE VERTICAL LINE IS COPIED...
  • Page 115 KX-FLB758RU 6.5.9.7. AN ABNORMAL IMAGE IS COPIED CROSS REFERENCE: CIS (Contact Image Sensor) SECTION (P.148)
  • Page 116 KX-FLB758RU 6.5.10. COMMUNICATION SECTION Find the problem in the table shown below, and refer to the corresponding troubleshooting procedure in DEFECTIVE FACSIMILE SECTION (P.117). Symptom Content Possible cause The paper dose not feed properly when faxing. Troubleshooting Problem with the feeding (Copying is also not possible.)
  • Page 117 KX-FLB758RU 6.5.10.1. DEFECTIVE FACSIMILE SECTION 6.5.10.1.1. TRANSMIT PROBLEM CROSS REFERENCE: WHITE PLATE AND SCANNER GLASS (P.33) ADF (Auto document feed) SECTION (P.110) OPERATION PANEL SECTION (P.140)
  • Page 118 KX-FLB758RU 6.5.10.1.2. SOMETIME THERE IS A TRANSMIT PROBLEM Note: “596: Transmit level set” represents a service code. Refer to the SERVICE FUNCTION TABLE (P.72). “717: Transmit speed select” represents a service code. Refer to the SERVICE FUNCTION TABLE (P.72).
  • Page 119 KX-FLB758RU 6.5.10.1.3. RECEIVE PROBLEM Confirm the following before starting troubleshooting. · Is the recording paper installed properly? Refer to the next page. Note: “596: Transmit level set” represents a service code. Refer to the SERVICE FUNCTION TABLE (P.72). “718: Receive speec select” represents a service code. Refer to the SERVICE FUNCTION TABLE (P.72).
  • Page 120 KX-FLB758RU For the receiving problem, we have thought of causes other than in the software. Some causes may be when the fax changes to the memory receiving mode (for example, when out of paper). and the memory becomes full of the unprinted fax data. In this case, [MEMORY FULL] and its main cause (for example, “OUT OF PAPER”) are displayed on the LCD.
  • Page 121 KX-FLB758RU 6.5.11. SPECIAL SERVICE JOURNAL REPORTS Journal 2 and Journal 3 shown below, which are special journals giving the additional detailed information about the latest 35 communications, can be printed by Service Code 881 or 882. Remote printing function for the journal reports (JOURNAL, JOURNAL 2 and JOURNAL 3) is also available for service technicians.
  • Page 122 KX-FLB758RU 6.5.11.1. JOURNAL 2 Refer to JOURNAL 2 in PRINTOUT EXAMPLE(P.123). Journal 2 displays the additional detailed information about the last 35 communications. Descriptions: (1) RCV. MODE Indicates which receive mode the unit was in when the unit received a fax message.
  • Page 123 KX-FLB758RU 6.5.11.2. JOURNAL 3 Refer to JOURNAL 3 in PRINTOUT EXAMPLE(P.123). Description (6) ENCODE (9) ERROR LINE (RX) Compression Code: MH/MR/MMR When an error occurs while receiving a fax, this shows the number of error lines. (7) MSLT (10) MAKER CODE MSLT means Minimum Scan Line Time.
  • Page 124 KX-FLB758RU...
  • Page 125 KX-FLB758RU 6.5.11.4. HOW TO OUTPUT THE JOURNAL REPORT 1. Press the MENU button. 2. Press “#”, then “8” and “3”. 3. Press the START/COPY/SET button. 4. The report prints out. CROSS REFERENCE: FEATURES(P.12) Error code table: (1) CODE (2) RESULT...
  • Page 126 KX-FLB758RU Note*: If the problem remains, see the following “Countermeasure” flow chart.
  • Page 127 KX-FLB758RU CROSS REFERENCE: TEST FUNCTIONS (P.74)
  • Page 128 KX-FLB758RU CROSS REFERENCE: TEST FUNCTIONS (P.74)
  • Page 129 KX-FLB758RU CROSS REFERENCE: TEST FUNCTIONS (P.74)
  • Page 130 KX-FLB758RU CROSS REFERENCE: TEST FUNCTIONS (P.74)
  • Page 131 KX-FLB758RU...
  • Page 132 KX-FLB758RU...
  • Page 133 KX-FLB758RU CROSS REFERENCE: TEST FUNCTIONS (P.74)
  • Page 134 KX-FLB758RU 6.5.11.5. CHECK THE STATUS OF THE DIGITAL BOARD...
  • Page 135 KX-FLB758RU 6.5.12. INITIALIZING ERROR After the power is turned on, the ASIC initializes and checks each IC. The ROM, SDRAM, and modem are checked. If initialization fails for the ICs, the system will not boot up. In this case, please find the cause as follows.
  • Page 136 KX-FLB758RU CROSS REFERENCE: CHECK THE STATUS OF THE DIGITAL BOARD (P.134)
  • Page 137 KX-FLB758RU 6.5.13. ANALOG BOARD SECTION This chapter provides the testing procedures required for the analog parts. A signal route to be tested is determined depending upon purposes. For example, the handset TX route begins at the handset microphone and the signal is output to the telephone line.
  • Page 138 KX-FLB758RU 6.5.13.2. DEFECTIVE ITS (Integrated Telephone System) SECTION 1. No handset and speakerphone transmission / reception Perform a signal test in the ITS or the NCU section and locate a defective point (where the signal disappears) on each route between the handset microphone and telephone line (sending), or between the telephone line and the handset speaker (receiving), or between the microphone and the telephone line (sending), or between the telephone line and the speaker (receiving).
  • Page 139 KX-FLB758RU 6.5.13.3. DETECTIVE TAM INTERFACE SECTION 1. The FAX turns on, but does not arrive through TAM. CROSS REFERENCE: TAM INTERFACE SECTION (P.230) 2. A FAX is received, but won´t switch from TAM to FAX. CROSS REFERENCE: ANALOG BOARD SECTION (P.137)

  • Page 140: Operation Panel Section

    KX-FLB758RU 6.5.13.4. OPERATION PANEL SECTION Refer to TEST FUNCTIONS (P.74). 1. NO KEY OPERATION 2. NO LCD INDICATION CROSS REFERENCE: TEST FUNCTIONS (P.74)
  • Page 141 KX-FLB758RU 6.5.13.5. SENSOR SECTION Refer to SENSORS AND SWITCHES for the circuit description. Perform an SENSOR CHECK to determine if the sensor is operating correctly. 1. Check the document sensor..“CHECK DOCUMENT” 2. Check the paper feed sensor..“REMOVE DOCUMENT”...
  • Page 142 KX-FLB758RU 5. Check the DRUM sensor..“CHECK DRUM” 6. Check the regist sensor..“FAILED PICKUP” 7. Check the paper sensor..“OUT OF PAPER” 8. Check the exit switch..“PAPER JAMED”...
  • Page 143 KX-FLB758RU 9. Check the toner sensor..“TONER LOW”, “CHECK TONER” Note: As for the following check, remove the drum from the main body, set it again and close the cover, then perform that check during initializing operation. Refer to SENSORS AND SWITCHES SECTION (P.185).
  • Page 144 KX-FLB758RU 6.5.13.6. MOTOR SECTION 6.5.13.6.1. ENGINE MOTOR...

  • Page 145: Adf Motor

    KX-FLB758RU 6.5.13.6.2. ADF MOTOR...
  • Page 146 KX-FLB758RU 6.5.13.6.3. CR MOTOR...
  • Page 147 KX-FLB758RU 6.5.13.7. LSU SECTION CROSS REFERENCE: LSU (Laser Scanning Unit) SECTION (P.183)
  • Page 148 KX-FLB758RU 6.5.14. CIS (Contact Image Sensor) SECTION CROSS REFERENCE: TEST FUNCTIONS (P.74)
  • Page 149 KX-FLB758RU 6.5.15. HIGH VOLTAGE VALUE CHECK POINT Measurement Procedure 1. Open the TOP cover. 2. Remove the developing unit, if it is equipped. 3. Open the TOP cover, and turn ON the TOP cover SW. (Push the TOP cover SW with a sharp-tipped insulator or insert folded paper, etc. to the slit.) 4.
  • Page 150 KX-FLB758RU 6.5.16. HIGH VOLTAGE SECTION...
  • Page 151 KX-FLB758RU...
  • Page 152 KX-FLB758RU...
  • Page 153 KX-FLB758RU...
  • Page 154 KX-FLB758RU * This Adjustment should be done with a single High Voltage Board. * As for the High Voltage Probe, HV PROBE 9014 of HIOKI electric co. or the equivalent should be used. * As for the tester, FLUKE 85 III multimeter or the equivalent should be used.
  • Page 155 KX-FLB758RU 6.5.17. POWER SUPPLY BOARD SECTION 6.5.17.1. 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 156 KX-FLB758RU 6.5.17.2. TROUBLESHOOTING FLOW CHART...
  • Page 157 KX-FLB758RU 6.5.17.3. BROKEN PARTS REPAIR DETAILS (D101~D104) Check for a short-circuit in terminal 4. If D101~D104 is short-circuit, F101 will melt (open). In this case, replace all of the parts (D101~D104, F101). (Q101) The worst case of Q101 is a short-circuit between the Drain and Gate because damage expands to the peripheral circuit of Q101.

  • Page 158: Problems With Pc Software

    KX-FLB758RU 6.6. PROBLEMS WITH PC SOFTWARE 6.6.1. GENERAL...
  • Page 159 KX-FLB758RU 6.6.2. SCAN...

  • Page 160: Circuit Operations

    KX-FLB758RU 7 CIRCUIT OPERATIONS 7.1. CONNECTION DIAGRAM 7.1.1. CONNECTION DIAGRAM (1)
  • Page 161 KX-FLB758RU 7.1.2. CONNECTION DIAGRAM (2)
  • Page 162 KX-FLB758RU 7.1.3. POWER SUPPLY FLOW...

  • Page 163: General Block Diagram

    KX-FLB758RU 7.2. GENERAL BLOCK DIAGRAM The following is an outline of each device IC on the digital board. 1. ASIC (IC604) Composed mainly of an address decoder and a modem control. Controls the general FAX operations. Performs the image processing.
  • Page 164 KX-FLB758RU...

  • Page 165: Facsimile Section

    KX-FLB758RU 7.3. FACSIMILE SECTION 7.3.1. DIGITAL SECTION 7.3.1.1. DIGITAL BLOCK DIAGRAM CN605 CN608 CN600 CN607 CN601 CN602 CN606 IC600 DRIVER IC601/602 BUFFER IC604 MFC2000 28MHz 32KHz IC608 IC603 IC609 SDRAM SDRAM CODEC TO OPE THERMISTOR IC606 CN611 CN608 CN616 FLASH...
  • Page 166 KX-FLB758RU 7.3.1.2. ASIC (IC604) This IC is used for general FAX operations. (1) CPU: This model uses ARM equivalent CPU operating at 40 MHz. Many of the peripheral functions are handled by custom designed LSIs. As a result, the CPU only needs to process the results.
  • Page 167 KX-FLB758RU 7.3.2. RTC BACKUP CIRCUIT 1. Function This unit has a lithium battery (BAT600) which works for the Real Time Clock IC (RTC: inside IC604). The RTC continues to work, backed up by a lithium battery even when the power switch is OFF.
  • Page 168 KX-FLB758RU 7.3.3. MODEM CIRCUIT OPERATION The CODEC (IC609) and ASIC (IC604) has all the hardware satisfying the CCITT standards mentioned previously. ASIC (IC604) controlled codec (IC609) by senial data. This CODEC (IC609) and ASIC (IC604) has an automatic application equalizer. With training signal 1 or 2 at the time of G3 reception, it can automatically establish the optimum equalizer.
  • Page 169 KX-FLB758RU 7.3.4. RESET RESET signal The System Reset signal (RESETn) comes from the IC 604-K18pin, ´H´ level (3.3V) in normal times, while ´L´ (0V) at reset. A built-in reset circuit inside IC 604 triggers a reset when the +5V power line voltage drop below 4.3V,or the 3.3V power line voltage drop below 2.9V.
  • Page 170 KX-FLB758RU 7.3.5. ANALOG SECTION 7.3.5.1. ANALOG GATE ARRAY (IC201 on the Digital Board)) This IC can perform signal route switching and level adjustments for various types of analog signals. This IC incorporates a cross-point switch (CPS), an electronic volume. The CPS of this IC is controlled by sending data from digital ASIC.

  • Page 171: Description Of Block Diagram In Analog Section

    KX-FLB758RU 7.3.5.2. DESCRIPTION OF BLOCK DIAGRAM IN ANALOG SECTION 1. Function The analog section works as an interface between the telephone line. The analog ASIC (IC201) on the digital board exchanges FAX TX and RX signals between the CODEC (IC609) and the analog section.

  • Page 172: Block Diagram

    KX-FLB758RU 7.3.5.3. BLOCK DIAGRAM...

  • Page 173: Cis Control Section

    KX-FLB758RU 7.4. CIS CONTROL SECTION 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 document is inserted and the start button pressed, pin Y8 of IC604 goes to a high level and the transistor Q611 turns on.This applies voltage to the LED array to light it.

  • Page 174: Stepping Motor Drive Section

    KX-FLB758RU 7.5. STEPPING MOTOR DRIVE SECTION 7.5.1. ENGINE MOTOR DRIVE CIRCUIT 1. Functions This motor functions for main operations FAX reception and copy printing. This feed recording paper synchronized for printing. 2. Motor operation Excitation pulses is output from ASIC (IC604) pins U8, W9 Y9 and Y12. Then stepping pulses are output from driver IC (IC1) pin No 9, 11, 15 and 19, and drives the motor coil.
  • Page 175 KX-FLB758RU 7.5.1.2. ENGINE MOTOR DRIVE CIRCUIT...

  • Page 176: Timing Chart

    KX-FLB758RU 7.5.2. ADF (Auto Document Feed) MOTOR DRIVE CIRCUIT 1. Functions This motor functions for main operations including FAX transmission, ADF copy and PC scan. This feed document paper synchronized for reading. 2. Motor operation During motor driving, pin R3 of ASIC IC604 becomes a high level, and Q606, Q602 turns ON.
  • Page 177 KX-FLB758RU 7.5.2.2. ADF (Auto Document Feed) MOTOR DRIVE CIRCUIT DRIVE MODE FUNCTION MODE PHASE PATTERN SPEED SCAN STANDARD 1 - 2 phase 833pps (t= 1/833) SCAN FAX/COPY FINE/HALF TONE 1 - 2 phase 833pps (t= 1/833) SCAN FAX/COPY SUPER FINE...
  • Page 178 KX-FLB758RU 7.5.3. CR (Carriage) MOTOR DRIVE CIRCUIT 1. Functions This motor functions for main operations including FAX transmission, FB copy and PC scan. This feed document paper synchronized for reading. 2. Motor operation During motor driving, pin P4 of ASIC IC604 becomes a high level, and Q605, Q600 turns ON.
  • Page 179 KX-FLB758RU 7.5.3.2. CR (Carriage) MOTOR DRIVE CIRCUIT DRIVE MODE FUNCTION MODE PHASE PATTERN SPEED SCAN STANDARD 1 - 2 phase 833pps (t= 1/833) SCAN FAX/COPY FINE/HALF TONE 1 - 2 phase 833pps (t= 1/833) SCAN FAX/COPY SUPER FINE 1 - 2 phase...

  • Page 180: Fan Motor Section

    KX-FLB758RU 7.6. FAN MOTOR SECTION This FAN is used to radiate heat in the unit. The signal level at pin 95/96 of IC610 becomes high, the FAN is activated.In this case, the pulse signal as shown below input to pin 93 of IC610 and the rotation of the FAN is detected.
  • Page 181 KX-FLB758RU 7.6.1. FAN CONTROL This unit is equipped with fan to prevent the developing device from rising in temperature while printing. The air is inhaled from the left side of the unit. The fan rotates at high speed (typ. 4800 rpm) while printing (controlling the developing device). After printing is finished, it rotates at low speed (typ.

  • Page 182: Solenoid Drive Section

    KX-FLB758RU 7.7. SOLENOID DRIVE SECTION The solenoid drive circuit controls the pick-up clutch. The solenoid is designed to be driven by +24V, driven by IC610-79 pin. Diode D603 protects Q615 from backward voltage when the solenoid is driven. Mode IC606-149 pin...

  • Page 183: Lsu (Laser Scanning Unit) Section

    KX-FLB758RU 7.8. LSU (Laser Scanning Unit) SECTION...
  • Page 184 KX-FLB758RU...

  • Page 185: Sensors And Switches Section

    KX-FLB758RU 7.9. SENSORS AND SWITCHES SECTION All of the sensor and switches are shown below. Sensor Circuit Location Sensor Sensor or Switch Name Message Error ADF Relay Board PS500 Document [CHECK DOCUMENT] RF Sensor Board PS501 Paper Feed [REMOVE DOCUMENT]...
  • Page 186 KX-FLB758RU 7.9.2. DOCUMENT SENSOR..”CHECK DOCUMENT” AND PAPER FEED SENSOR..”REMOVE DOCUMENT” These Sensors detect whether or not a document is in place. When a document is detected, the shelter plate let the sensor light pass through, the photo-transistor turns ON, and the input signal of IC610-118pin /IC610-119pin becomes a low level.
  • Page 187 KX-FLB758RU 7.9.3. CIS POSITION SENSOR These Sensors detect whether or not CIS is in home position. When the CIS is detected, the shelter plate shuts off the sensor light, the photo-transistor turns OFF, and the input signal of IC610-100pin /IC610-101pin becomes a high level.
  • Page 188 KX-FLB758RU 7.9.4. ADF COVER OPEN SWITCH The Switch detects whether the ADF cover is open or closed. When the ADF cover is closed, the switch turns ON, and the input signal of IC610-116pin becomes a low level. When the ADF cover is open, the switch turns OFF, and the input signal of IC610-116pin becomes a high level.
  • Page 189 KX-FLB758RU 7.9.6. TOP COVER OPEN SWITCH..”COVER OPEN” The Switches detect whether the printer cover is open or closed. When the printer cover is closed, the switches turn ON, and the input signal of IC604-U4 pin becomes a high level. When the printer cover is open, the switches turns OFF, and the input signal of IC604-U4 pin becomes a low level.
  • Page 190 KX-FLB758RU 7.9.8. REGIST SENSOR..”FAILED PICK UP” The Sensor detects whether or not the recording paper is present so that printing can start. When the recording paper is detected, the shelter plate let the sensor light passing through, the photo-transistor turns ON, and the input signal of IC610-154 pin becomes a low level.
  • Page 191 KX-FLB758RU 7.9.9. PAPER SENSOR..“OUT OF PAPER” The Sensor detects the recording paper are in place. When the recording paper is detected, the shelter plate let the sensor light passing through, the photo-transistor turns ON, and the input signal of IC610-121 pin becomes a low level.
  • Page 192 KX-FLB758RU 7.9.11. TONER SENSOR..“TONER EMPTY”, “TONER LOW”, “CHANGE DRUM” The Sensor detects whether or not the Developer unit and the toner are present. When there is not Development unit, the shelter plate let the sensor light passing through, the photo-transistor turns ON, and the input signal of IC610-128 pin (Digital P.C.B) becomes a low level over 9s.
  • Page 193 KX-FLB758RU 7.9.11.1. TONER DETECTION FLOW CAUTION: 1. Toner low can be judged by continuous 5-times TONER LOW signal at only printing. (It is not executed at.) 2. Toner full can be judged by continuous 3-times TONER FULL signal at initialization.

  • Page 194: Operation Board Section

    KX-FLB758RU 7.10. OPERATION BOARD SECTION The unit consists of a LCD (Liquid crystal display), KEYs and LEDs (light-emitting diodes). They are controlled by the Gate Array (IC101) and ASIC (IC610: on the DIGITAL BOARD). The key matrix table is shown below.

  • Page 195: Lcd Section

    KX-FLB758RU 7.11. LCD SECTION The Gate Array (IC101) works only for writing the ASCII code from the data bus (D4~D7). V0 is supplied for the crystal drive. R130 and R134 are density control resistors. Consequently, in this unit, the timing (positive clock) is generated by the LCD interface circuitry in the gate array (IC101).

  • Page 196: Hvps (High Voltage Power Supply) Section

    KX-FLB758RU 7.12. HVPS (High Voltage Power Supply) SECTION 7.12.1. HVPS SPECIFICATION Output voltage Item Specification Notes Electrostatic Rate output voltage -1200±35V Charge Impedance range 80M~1200MΩ CHG BIAS Output format Constant voltage Developing Rate output voltage -350±15V DEV(-) BIAS Impedance range 20M~2000MΩ...
  • Page 197 KX-FLB758RU 7.12.2. CHG-BIAS (Charge BIAS)/SUP BIAS (Supply BIAS)/DEV(-) BIAS (Developing(-) BIAS)/DEV(+) BIAS (Developing(+) BIAS) UNIT When the CHG REM terminal becomes “L”, the transistor Q202 turns ON by MC101, Charge BIAS(-1200V) is output from CHG OUTPUT, Supply BIAS(-550V) is output from SUP output, and Developing(-) BIAS(-350V) is output from DEV(-) BIAS.By performing the DEV(-) BIAS output, the condenser C208 is charged with an electric charge.
  • Page 198 KX-FLB758RU 7.12.3. TRA(+) BIAS (Transfer(+) BIAS)/TRA(-) BIAS (Transfer(-) BIAS) UNIT When the CHG REM terminal is “L” and the TRA CLK terminal is “Open”, Transfer(-) BIAS(-1200V) is output from TRA OUTPUT the moment Charge BIAS(-1200V) is output from CHG OUTPUT. When 8KHz PWM (pulse-width modulation) signal is input to the TRA CLK terminal, Q101 turns ON by MC101, and TRA(+) CURRENT BIAS according to the PWM signal is output from TRA OUTPUT.

  • Page 199: Heat Lamp Control Circuit

    KX-FLB758RU 7.13. HEAT LAMP CONTROL CIRCUIT The temperature of the fixing part of the Fixing Unit is converted to a voltage by THERMISTER and input to IC604-Y6 (analog input). The heater turns ON/OFF the photo-coupler PC101 at the heater control port (IC610-80pin), and is turned ON/OFF at the triac CR101.
  • Page 200 KX-FLB758RU T0: Initial Temperature (At Power OFF / Normal Temperature) T1: Primary Stable Temperature (Heater Disconnection / Thermistor Loose Connection Detection Temperature) T2: Secondary Stable Temperature (Paper Feeding Permission Temperature / Fixing Control Temperature) Th: Abnormal High Temperature t0: Initial Time (After Printing Signal Received)
  • Page 201 KX-FLB758RU The correspondence readings between temperature measured by thermistor and HEX readings Temperature(°C) HEX reading Temperature(°C) HEX reading Temperature(°C) HEX reading...
  • Page 202 KX-FLB758RU Temperature(°C) HEX reading Temperature(°C) HEX reading Temperature(°C) HEX reading Note: The value is displayed on LCD at TEST FUNCTIONS (P.74) [#815].

  • Page 203: Power Supply Board Section

    KX-FLB758RU 7.14. POWER SUPPLY BOARD SECTION This power supply board uses the switching regulator method. Block Diagram T101 Input Input Rectifier Circuit C106 Output CN101 Circuit Kick-on R110 Surge Circuit Voltage absorber Circuit Converter circuit Circuit R111 A-B Voltage Wave Form...
  • Page 204 KX-FLB758RU 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 205 KX-FLB758RU [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 206: Reference Materials Data

    KX-FLB758RU 8 REFERENCE MATERIALS DATA 8.1. PRINTING OPERATION PRINCIPLE 8.1.1. PROCESS CHART AND PROCESS BIAS 8.1.2. CHARGING Charging is the stage that keeps the surface of the sensitive drum a fixed electric potential. The sensitive drum is the Organic Photo Conductor (OPC), which is a electric conductive cylinder whose surface is covered with the Charge Generation Layer (CGL) and Charge Transfer Layer (CTL).
  • Page 207 KX-FLB758RU 8.1.3. EXPOSING When the drum which is charged with the fixed electric charge is irradiated by the laser beam, the plus charge and minus charge are generated at the Charge Generation Layer. Passing through the Charge Transfer Layer which conducts the plus charge, the minus-charged drum´s surface is neutralized to be skipped.
  • Page 208 KX-FLB758RU 8.1.5. DEVELOPING AND TRANSCRIPTION The developing is the stage that the OPC drum with an invisible image is changed to visible by the toner. The developer consists of mixing paddle, toner supply roller, developing roller, developing blade and OPC drum. The bias voltage is added to the developing roller (DC -180V) and toner supply roller (DC -350V).
  • Page 209 KX-FLB758RU 8.1.6. CLEANING The toner attached to the surface of the OPC drum is transferred to the paper at the transcription stage, but a part of the toner remains. The cleaning is the stage that cleans the remain toner after the transcription stage. The remain toner on the drum and the toner which was attached to the place where the laser beam didn´t scan are gathered to the developing roller to be used again.
  • Page 210 KX-FLB758RU 8.1.7. FIXING On the process of the transcription, the transferred toner is weakly attached on the paper. Fixing means the process to fix the toner on the paper permanently. The fixing part melts the toner at the high temperature using the halogen heater. The toner is fixed on the paper by the heat and pressure through the fixing part with the image.
  • Page 211 KX-FLB758RU 8.1.8. IMAGE READING The Image Reading Part feeds and ejects the document when copying or scanning. The image reading part consists of the followings. 8.1.8.1. Copying with the Automatic Document Feeder The automatic document feeder consists of separation roller, document feed roller, separation pad, springs, etc. It divides the documents and transfers to the reading part, then stacks the documents on the document guide when finished reading.
  • Page 212 KX-FLB758RU 8.1.9. TIMING CHART (When Printing Two Sheets of Paper) BASIC...
  • Page 213 KX-FLB758RU 8.1.10. Timing Chart [Initializing (Short)] 8.1.11. Timing Chart [Initializing (Long)]...
  • Page 214 KX-FLB758RU 8.1.12. Timing Chart (when the registration sensor is turned OFF then ON during initializing)

  • Page 215: Diodes

    KX-FLB758RU 8.2. TERMINAL GUIDE OF THE ICs TRANSISTORS AND DIODES...
  • Page 216 KX-FLB758RU...

  • Page 217: How To Replace A Flat Package Ic

    KX-FLB758RU 8.3. HOW TO REPLACE A FLAT PACKAGE IC 8.3.1. PREPARATION 8.3.3. REMOVING SOLDER FROM BETWEEN PINS · PbF (: Pb free) Solder · Soldering Iron 1. Add a small amount of solder to the bridged pins. Tip Temperature of 662°F ± 50°F (350°C ± 10°C) 2.

  • Page 218: Digital Board Section

    KX-FLB758RU 8.4. DIGITAL BOARD SECTION When the unit fails to boot up the system, take the troubleshooting procedures very carefully. It may have a serious problem. The symptom: No response when the power is turned on. (No LCD display, and keys are not accepted.) The first step is to check the power source.
  • Page 219 KX-FLB758RU 8.4.1. NG EXAMPLE...
  • Page 220 KX-FLB758RU 8.4.2. ASIC (IC604) PIN LAYOUT...

  • Page 221: Modem Section

    KX-FLB758RU 8.5. MODEM SECTION 8.5.1. FUNCTION The unit uses CODEC (IC609) and ASIC (IC604) that serves as an interface between the control section for FAX transmission and reception and the telephone line. During a transmitting operation, the digital image signals are modulated and sent to the telephone line.
  • Page 222 KX-FLB758RU synchronization status, etc. and prepares for transmission of facsimile messages. Phase C : Message transmission Phase C is the procedure for the transmitting facsimile messages. Phase D : Post message procedure Phase D is the procedure for confirming that the message is completed and received. For continuous transmission, phase B or phase C is repeated for transmission.
  • Page 223 KX-FLB758RU Explanation of Signals Control signals are comprised mainly of 8-bit identification signals and the data signals added to them. Data signals are added to DIS and DCS signals. Signal..DIS (Digital Identification Signal) Identification Signal Format..00000001 Function: Notifies the capacity of the receiving unit. The added data signals are as follows.
  • Page 224 KX-FLB758RU Bit No. DIS/DTC 11, 12, 13, 14 Data signaling rate Data signaling rate 0, 0, 0, 0 V.27 ter fall back mode 2400 bit/s, V.27 ter 0, 1, 0, 0 V.27 ter 4800 bit/s, V.27 ter 1, 0, 0, 0 V.29...
  • Page 225 KX-FLB758RU Bit No. DIS/DTC Inch based resolution preferred Resolution type selection “0”: neuritic based resolution “1”: inch based resolution Metric based resolution preferred Don’t care Minimum scan line time capability for higher resolutions Don’t care “0”: T “1”: T = 1/2T 15.4...
  • Page 226 KX-FLB758RU...

  • Page 227: Ncu Section

    KX-FLB758RU 8.6. NCU SECTION 8.6.1. GENERAL This section is the interface between the telephone line and external telephone. It is composed of an EXT. TEL line relay (RY202), bell detection circuit, TAM interface circuit, line amplifier and side tone circuits and a multiplexer.

  • Page 228: 8.7. Its (Integrated Telephone System) And Monitor

    KX-FLB758RU 8.6.5. REMOTE FAX ACTIVATION CIRCUIT 1. Function Another telephone connected to same line activates the unit to the FAX mode by using a DTMF signal. 2. Signal Path Refer to CHECK SHEET (P.137). 8.6.6. TAM INTERFACE CIRCUIT This circuit is to switch between FAX receiving and the external TAM’s message recording automatically. This circuit consists of a transformer, multiplexer, amplifier.
  • Page 229 KX-FLB758RU 8.7.1.4. LOW PASS FILTER 1. Function This low pass filter attenuates the 16-kHz account signal from the commutator to eliminate influence on the conversation and communication. 2. Circuit Operation This low pass filter is an eight-order active filter, and the cutoff frequency is approximately 4 kHz.

  • Page 230: Tam Interface Section

    KX-FLB758RU 8.7.1.5. TAM INTERFACE SECTION 1. Function If EXT. TAM is selected in the Receive mode, the unit receives documents for FAX calls or the external TAM records a voice message automatically. To switch between the answering machine and facsimile in the EXT. TAM Mode.
  • Page 231 KX-FLB758RU USER-FRIENDLY RECEPTION FOR PARALLEL-CONNECTED TELEPHONE When CNG signal is transmitted from the other party´s phone after a parallel-connected phone or an external phone goes OFF- Hook while the telephone is ringing, the machine automatically starts receiving FAX.

  • Page 232: Section 228 8.8. Test Chart

    KX-FLB758RU 8.8. TEST CHART 8.8.1. ITU-T No.1 TEST CHART...
  • Page 233 KX-FLB758RU 8.8.2. ITU-T No.2 TEST CHART...

  • Page 234: Fixtures And Tools

    KX-FLB758RU 9 FIXTURES AND TOOLS...

  • Page 235: Cabinet, Mechanical And Electrical Parts Location

    KX-FLB758RU 10 CABINET, MECHANICAL AND ELECTRICAL PARTS LOCATION 10.1. GENERAL SECTON...

  • Page 236: 10.2. Document Tray Block And Upper Adf Section

    KX-FLB758RU 10.2. DOCUMENT TRAY BLOCK AND UPPER ADF SECTION...

  • Page 237: Converyor Block Section

    KX-FLB758RU 10.3. CONVERYOR BLOCK SECTION...

  • Page 238: Lower Adf Section

    KX-FLB758RU 10.4. LOWER ADF SECTION...

  • Page 239: Upper Printer Cover Section

    KX-FLB758RU 10.5. UPPER PRINTER COVER SECTION...

  • Page 240: Lower Printer Section

    KX-FLB758RU 10.6. LOWER PRINTER SECTION...

  • Page 241: Upper Main Cabinet Section

    KX-FLB758RU 10.7. UPPER MAIN CABINET SECTION...

  • Page 242: Lower Main Cabinet Section

    KX-FLB758RU 10.8. LOWER MAIN CABINET SECTION...

  • Page 243: Fuser Section

    KX-FLB758RU 10.9. FUSER SECTION...

  • Page 244: Main Frame Section

    KX-FLB758RU 10.10. MAIN FRAME SECTION...

  • Page 245: Motor Section

    KX-FLB758RU 10.11. MOTOR SECTION...

  • Page 246: Actual Size Of Screws And Washer

    KX-FLB758RU 10.12. ACTUAL SIZE OF SCREWS AND WASHER...

  • Page 247: Accessories And Packing Materials

    KX-FLB758RU 11 ACCESSORIES AND PACKING MATERIALS...

  • Page 248: Replacement Parts List

    KX-FLB758RU 12 REPLACEMENT PARTS LIST Notes: Ref. Part No. Part Name & Description Remarks 1. The marking (RTL) indicates that the Retention Time is PFUS1351Z SPRING,EXIT EARTH limited for this item. PFUS1343Z SPRING,EXIT PINCH ROLLER PFDR1030Z ROLLER,EXIT PINCH POM-HB After the discontinuation of this assembly in production, the...
  • Page 249 KX-FLB758RU Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks PFHX1519Z COVER PFGP1207X PANEL,LCD PFHE1068Z TAPE,MAGIC TAPE PFGV1012Z COVER/TEL.NO.CARD PFUS1342Y LEAF SPRING PFGD1047Z CARD,TEL.NO. PFDR1029Z ROLLER POM-HB PFGG1074Z2 GRILLE,SUB PS-HB PFUS1350Z COIL SPRING...

  • Page 250: Accessories And Packing Materials

    KX-FLB758RU Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks PFJS10P11Z CONNECTOR,10P PFUA1027X CHASSIS PC+ABS+ GF20%- PFJS14P09Z CONNECTOR,14P PFJP03S04Z AC INLET PFQT1874V LABEL ,DRUM INSTALL WLR18YK26CM4 LEAD WIRE PFQT2115Z LABEL,LASER CAUTION PQMX10010Z COVER...

  • Page 251: Digital Board Parts

    KX-FLB758RU Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks PFPN1264Y CUSHION DA600 PFVDNECD5R6G DIODE(SI) PFPN1265Y CUSHION DA601 PFVDNECD5R6G DIODE(SI) PFPD1120Z CUSHION DA602 PFVDNECD5R6G DIODE(SI) XZB20X30A04 PROTECTION COVER DA603 PFVDNECD5R6G DIODE(SI) PFPH1041Z PROTECTION COVER...
  • Page 252 KX-FLB758RU Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks C681 ECUV1H150JCV CN602 K1AB110B0001 CONNECTOR,10P C682 ECUV1H150JCV CN603 PQJP3G30Z CONNECTOR,3P C684 ECUV1H150JCV CN605 PQJP14G30Y CONNECTOR,14P C685 ECUV1H150JCV CN606 PQJP4G30Y CONNECTOR,4P C686 ECUV1H150JCV CN607...
  • Page 253 KX-FLB758RU Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks L657 PFVF1B252SDT CERAMIC FILTER R642 ERJ3GEYJ152 1.5k L658 PFVF1B252SDT CERAMIC FILTER R643 ERJ3GEYJ332 3.3k L659 PFVF1B252SDT CERAMIC FILTER R644 ERJ3GEYJ822 8.2k L660 PFVF1B252SDT...

  • Page 254: Analog Board Parts

    KX-FLB758RU Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R735 ERJ3GEYJ101 RA621 PFXBV8V470JV RESISTOR ARRAY R736 ERJ3GEYJ101 (CRYSTAL OSCILLATORS) R737 ERJ3GEYJ333 X600 H0J282500005 CRYSTAL OSCILLATOR R738 ERJ3GEYJ562 5.6k X601 PFVCCFS32Z CRYSTAL OSCILLATOR...
  • Page 255 KX-FLB758RU Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks L213 PFVF1B252SDT CERAMIC FILTER C234 ECUV1C104ZFV L232 PFVF1B252SDT CERAMIC FILTER C235 ECUV1H152KBV 0.0015 L233 PFVF1B252SDT CERAMIC FILTER C236 ECEA1HKS010 L234 PFVF1B252SDT CERAMIC FILTER...
  • Page 256 KX-FLB758RU Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks C330 ECUV1H332KBV 0.0033 R223 ERJ3GEYJ103 C332 ECUV1C273KBV 0.027 R224 ERJ3GEYJ223 C333 ECUV1H333KBV 0.033 R225 ERJ3GEYJ223 C334 ECUV1H333KBV 0.033 R226 ERJ3GEYJ4R7 C335 ECUV1C273KBV 0.027...

  • Page 257: Operation Board Parts

    KX-FLB758RU Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R316 ERJ3GEYJ101 R103 ERJ3GEYJ101 R318 ERJ3GEYJ333 R104 ERJ3GEYJ101 R319 ERDS2TJ563 R105 ERJ3GEYJ101 R321 ERJ3GEYJ154 150k R106 ERJ3GEYJ101 R323 ERDS1TJ682 6.8k R107 ERJ3GEYJ471 R324...

  • Page 258: Low Voltage Power Supply Board Parts

    KX-FLB758RU Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks D102 PQVDS5688G DIODE(SI) VR101 ER0S2TKF7871 7.87k D103 PFVDDHM3M20 DIODE(SI) (FUSE) D104 PFVDDHM3M20 DIODE(SI) IP101 PFBAICPN38 FUSE D110 PFVDERA9102 DIODE(SI) (PHOTO ELECTRIC TRANSDUCER) D111...

  • Page 259: Motor Drive Board Parts

    KX-FLB758RU Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R106 ERG2SJ470 ERJ3GEYJ221 R108 ERDS2FJ150 ERX2SZGR47 0.47 R109 ERDS2FJ220 ERJ3GEYJ183 R110 ERDS2J823 ERJ3GEYJ221 R111 ERDS2J823 ERJ3GEYJ333 R112 ERDS1FJ121 (FUSE RESISTOR) R113 ERDS2FJ101 PFRB0032315T...

  • Page 260: Cis Sensor Board Parts

    KX-FLB758RU Ref. Part No. Part Name & Description Remarks PS502 PQVIPS4506 PHOTO SENSOR (RESISTORS) R501 ERJ3GEY0R00 R502 ERJ3GEY0R00 12.14. CIS SENSOR BOARD PARTS Ref. Part No. Part Name & Description Remarks PCB12 PFLP1379MZ-D CIS SENSOR BOARD ASS´Y(RTL) (CONNECTORS) CN508 K1MN03B00016...

  • Page 261: For The Schematic Diagrams

    KX-FLB758RU 13 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 262: Schematic Diagram

    97 3.3V RASn[0] D[2] TO POLYGON C738 98 VSS DWRn Z0.1u D[1] SDQMU 99 5V IC610 SDQM1/CLK_CONFIG1 IC604 CISPOS0 D[0] SDQML IOP14 SDQM0/CLK_CONFIG0 CISPOS1 IOP15 JOG1 R672 XRESET IOP16 GPIO[9] JOG2 DMAACKO IOP17 DMAACK2 KX-FLB758RU DIGITAL BOARD (PCB1) 1/4 (b)(c)(d) (e)(f)
  • Page 263 5.6K R648 0 WPROTn R649 ADFOPEN R627 5.6K BATRSTn 10 P.F 180K DOCU R628 5.6K EXT_PWRDWN_SELn R629 5.6K VDRAM IC604 SENCTL4 R602 +5VD PWN[0] GPIO[1] DRUM GPIO[2] R615 2.2K Q601 KX-FLB758RU DIGITAL BOARD (PCB1) 2/4 (k) (l)(m) (n) (p)(q) (r)(s)(t)(u)
  • Page 264 MIDAT L654 +5VD MIDATA R795 +5VA L671 R788 R762 +5VD 2A601S R789 +5VD L672 L667 R790 2A601S 2A601S L659 HOOK HOOK SENCTL5 TXA1 C721 K0.01u SENCTL5 L661 TNREMP TXA2 TNREMP R738 5.6K C722 K1000p CN616 KX-FLB758RU DIGITAL BOARD (PCB1) 3/4...
  • Page 265 1B601S 32 nFault BUSY +24V 33 NC +5VD L668 34 NC SLCTOUT R774 L630 0 R600 35 NC FAULTn 4.7K(1/4W) Q630 R653 36 NSelectIn L600 1B601S Q611 C651 TO USB R753 R752 R741 TO CIS KX-FLB758RU DIGITAL BOARD (PCB1) 4/4...

  • Page 266: Analog Board (Pcb2)

    HSMICOUT L-LD2 R-LD2 R220 130K K1500p 4.7K EXTIN NC17 L-GND R-GND 8.2K J10p C223 C379 NC19 NC18 R205 150K DA201 DATA C210 R207 C203 R223 10K K0.1 K150P VREF R212 220K L201 R213 220K (12) KX-FLB758RU ANALOG BOARD (PCB2) 1/2...
  • Page 267 L245 FL218 Z0.1 IC209 L246 C351 CN204 IC208 C337 K0.1 L243 2 HSSP+ 6.3V330 J214 C350 R332 L241 1 HSMIC- L244 K0.1 Q212 3 HSSP- L242 4 HSMIC+ FL221 L247 J230 L263 (12) L248 ( KX-FLB758RU ANALOG BOARD (PCB2) 2/2...

  • Page 268: Operation Board (Pcb3)

    COLLATE STOP AUTO ANSWER COPY SW133 SW137 SW134 SW135 SW132 SW136 SW117 LOWER SW123 SW122 SW120 SW121 SW119 SW124 SW118 VOL+ VOL- NEXT MENU HELP CALLER ID PREV SW126 SW129 SW128 SW131 SW130 SW125 SW127 KX-FLB758RU OPERATION BOARD (PCB3) 1/2...
  • Page 269 SCLK LATCH START KIN0 KIN1 KIN2 KIN3 KIN4 LED6 KIN5 XLD12 KIN6 XLD10 KIN7 XLD14 KSL0 LED5 KSL1 LED4 KSL2 LED1 KSL3 XLD11 KSL4 LED3 +5VD AUTO ANSWER R107 XLD13 XLD8 LED101 XLDX9 470Ω LED2 KX-FLB758RU OPERATION BOARD (PCB3) 2/2...

  • Page 270: High Voltage Power Supply Board (Pcb4)

    D111 16 15 14 13 12 11 10 IC101 Q103 R105 D112 TOP CVR CHG REM R102 R104 R106 100k 165k 0.5V TRA CLK R202 15.8k 0.5V REGIST DEV CHG PC201 DRUM KX-FLB758RU HIGH VOLTAGE POWER SUPPLY BOARD (PCB4) 1/2...
  • Page 271 0.001 R113 Q101 C108 D104 470p R109 T201 D203 R218 R220 C202 470p 2.2M 2.2M R206 R211 D205 1.5M ZD203 R209 C207 500V DEV+ C208 -1kV 470p DEV- 0.01 Q204 R219 4.7k KX-FLB758RU HIGH VOLTAGE POWER SUPPLY BOARD (PCB4) 2/2...

  • Page 272: Low Voltage Power Supply Board (Pcb5)

    D107 2200p 2200p (L107) D108 R108 R101 4700p IC101 1M 1/2 L101 ZNR101 C124 R127 750V C101 -15V C110 0.22 2200p PC101 F102 R207 T5AH PC102 250V R114 22 1/2 CN102 L103 KX-FLB758RU LOW VOLTAGE POWER SUPPLY BOARD (PCB5) 1/2...
  • Page 273 KX-FLB758RU (L204) D201 CN201 L206 P GND P GND D GND -80V D GND (D203) (C223) (C224) IC202 (L205) D202 HTRON C205 R223 PDET 0.1/50 7.5V IC201 -23V KX-FLB758RU LOW VOLTAGE POWER SUPPLY BOARD (PCB5) 2/2...

  • Page 274: Motor Drive Board (Pcb6)

    12 NC 13 PG 14 NC 15 OUT3 16 NC 17 NC 18 RsB 19 OUT4 20 VmmB 21 Vcc Z0.1 22 IN4 23 IN3 24 I1 25 NC 26 VsB 0.47 2W R5 18K K3300 KX-FLB758RU MOTOR DRIVE BOARD (PCB6)

  • Page 275: Sensor Board (Pcb7)

    CMXA 3 XA DOCU CN502 CMXB 2 XB 1 LED 1 COM 2 SIG 3 GND KX-FLB758RU ADF RELAY BOARD (PCB9) 15.9. PF SENSOR BOARD (PCB10) KX-FLB758RU SCAN MOTOR DRIVER BOARD (PCB13) CN503 Paper Feed KX-FLB758RU PF SENSOR BOARD (PCB10)

  • Page 276: Printed Circuit Board

    R615 +5VD DA603 DA601 DA602 DA600 R653 R616 C631 C624 C625 Q611 Q601 DA604 L632 RA603 RA600 RA601 RA602 L621 C628 L631 C630 F606 D601 L668 R642 Q630 R641 CN602 CN607 R669 CN600 R775 KX-FLB758RU DIGITAL BOARD (PCB1) COMPONENT VIEW...
  • Page 277 L607 C622 L611 C619 R651 L603 R629 R630 L616 C610 C606 L608 C621 L612 C617 L634 L604 +24V R626 R614 R643 R628 R631 R640 R600 R789 9 10 L630 R774 R795 L600 R619 C616 KX-FLB758RU DIGITAL BOARD (PCB1) BOTTOM VIEW...

  • Page 278: Analog Board (Pcb2)

    J320 J357 D207 J368 CN201 J382 J372 J350 J373 J362 J312 J221 C211 J218 C216 J359 J352 C279 J363 D213 C355 D214 J347 J374 J351 J348 FL221 J377 J376 J375 J315 C321 J301 J224 PS201 KX-FLB758RU ANALOG BOARD COMPONENT VIEW...
  • Page 279 16.2.2. ANALOG BOARD: BOTTOM VIEW IC205 KX-FLB758RU ANALOG BOARD BOTTOM VIEW...

  • Page 280: Operation Board (Pcb3)

    LOWER MONITOR VOL- A B C 1 2 3 4 5 6 7 8 9 A B C KX-FLB758RU OPERATION BOARD (PCB3) COMPONENT VIEW 16.3.2. OPERATION BOARD:BOTTOM VIEW IC101 PFUP1258ZA KX-FLB758RU OPERATION BOARD (PCB3) BOTTOM VIEW...

  • Page 281: High Voltage Power Supply Board (Pcb4)

    R215 C209 T101 D102 R216 C210 D203 C207 ZD203 R209 JC10 R114 D202 C208 R211 C204 R128 C104 R210 D103 D205 D104 T201 R219 Q202 VR201 C103 C108 C109 D201 R127 KX-FLB758RU HIGH VOLTAGE POWER SUPPLY BOARD (PCB4) COMPONENT VIEW...
  • Page 282 16.4.2. BOTTOM VIEW C212 C102 R102 R123 R120 R125 C110 R122 R105 R106 R202 R107 D111 C106 C203 KX-FLB758RU HIGH VOLTAGE POWER SUPPLY BOARD (PCB4) BOTTOM VIEW...

  • Page 283: Low Voltage Power Supply Board (Pcb5)

    J207 T3.15AH FOR CONTINUED PROTECTION 250V J208 VR201 AGAINST RISK OF FIRE, C205 PC101 REPLACE ONLY WITH SCR101 IC201 J209 SAME TYPE AND CN102 RATINGS OF FUSE. R114 R113 PC102 C112 KX-FLB758RU LOW VOLTAGE POWER SUPPLY BOARD (PCB5) COMPONENT VIEW...
  • Page 284 J106 D-GND C111 D-GND R108 J212 P-GND C101 P-GND R103 J211 D202 R202 R111 J204 C106 T101 R110 L101 D105 D101 C201 R101 TH101 J101 D102 D103 L102 C102 Q101 SRF1346EK KX-FLB758RU LOW VOLTAGE POWER SUPPLY BOARD (PCB5) BOTTOM VIEW...

  • Page 285: Motor Drive Board (Pcb6)

    16.6. MOTOR DRIVE BOARD (PCB6) (COMPONENT VIEW) (BOTTOM VIEW) PFUP1257ZA-B (PFUP1257ZB-B) (PFUP1257YA-B) KX-FLB758RU MOTOR DRIVE BOARD (PCB6)

  • Page 286: Sensor Board (Pcb7)

    16.7. SENSOR BOARD (PCB7) (COMPONENT VIEW) (BOTTOM VIEW) PFUP1257ZB-C PFUP1257ZB-C PFUP1257ZA-C (PFUP1257YA-C) PFUP1257ZA-C (PFUP1257YA-C) CN50 CN50 CN51 CN51 KX-FLB758RU SENSOR BOARD (PCB7)

  • Page 287: Varistor Board (Pcb8)

    16.8. VARISTOR BOARD (PCB8) (COMPONENT VIEW) (BOTTOM VIEW) PFUP1257ZA-D (PFUP1257ZB-D) (PFUP1257YA-D) KX-FLB758RU VARISTOR BOARD (PCB8)

  • Page 288: Adf Relay Board (Pcb9)

    CN500 PFUP1259ZB-A PCB-CH J502 J501 CN501 J506 (BOTTOM VIEW) SW501 KX-FLB758RU ADF RELAY BOARD (PCB9) 16.10. PF SENSOR BOARD (PCB10) PCB-CH PCB-CH PFUP1259ZB-B PFUP1259ZB-B A B C D E F G A B C D E F G PS501 PS501...

  • Page 289: Cis Relay Board (Pcb11)

    16.11. CIS RELAY BOARD (PCB11) PFUP1259ZB-C CN504 CN505 J508 J507 CN506 CN507 PS502 KX-FLB758RU CIS RELAY BOARD (PCB11) COMPONENT VIEW...

  • Page 290: Cis Sensor Board (Pcb12)

    KX-FLB758RU CIS RELAY BOARD (PCB11) BOTTOM VIEW 16.12. CIS SENSOR BOARD (PCB12) CN508 PS503 PCB-CH PFUP1259ZB-D KX-FLB758RU CIS SENSOR BOARD (PCB12)

  • Page 291: Scan Motor Driver Board (Pcb13)

    16.13. SCAN MOTOR DRIVER BOARD (PCB13) CN509 PCB-CH IC500 PFUP1259ZB-E KX-FLB758RU SCAN MOTOR DRIVER BOARD (PCB13)

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