Panasonic KX-FP121AL Service Manual
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Panasonic KX-FP121AL Service Manual

Panasonic KX-FP121AL Service Manual

Compact plain paper fax/multi-function plain paper fax
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Compact Plain Paper FAX/Multi-Function Plain Paper FAX
KX-FP121AL
KX-FM131AL
(for Australia)
© 1999 Kyushu Matsushita Electric Co., Ltd. All
rights
reserved.
distribution is a violation of law.
ORDER NO. KM79910327C3
Unauthorized
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  • Page 1 ORDER NO. KM79910327C3 Compact Plain Paper FAX/Multi-Function Plain Paper FAX KX-FP121AL KX-FM131AL (for Australia) © 1999 Kyushu Matsushita Electric Co., Ltd. All rights reserved. Unauthorized copying distribution is a violation of law.

  • Page 2: Table Of Contents

    12.5. ACTUAL SIZE OF SCREWS AND WASHER 6 CIRCUIT OPERATIONS 13 ACCESSORIES AND PACKING MATERIALS 6.1. CONNECTION DIAGRAM 14 REPLACEMENT PARTS LIST (for KX-FP121AL) 6.2. GENERAL BLOCK DIAGRAM 14.1. CABINET AND ELECTRICAL PARTS 6.3. CONTROL SECTION 14.2. DIGITAL BOARD PARTS 6.4.
  • Page 3 KX-FP121AL / KX-FM131AL 15.8. FIXTURES AND TOOLS...

  • Page 4: Introduction

    KX-FP121AL / KX-FM131AL 1 INTRODUCTION 1.1. 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 5: Ac Caution

    KX-FP121AL / KX-FM131AL 1.5. 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 3 times.

  • Page 6: Service Precautions

    KX-FP121AL / KX-FM131AL 1.7. SERVICE PRECAUTIONS 1.7.1. 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 7: Features

    KX-FP121AL / KX-FM131AL 1.8. FEATURES General based upon ITU-T No. 1 Test Chart at standard resolution. · Help function Display: Large Memory (28 pages)... Performed by DRAM 1. SEND GUIDE Approx. 28 pages of memory reception 2. HOW TO SET UP Approx.

  • Page 8: Specifications

    KX-FP121AL / KX-FM131AL 1.9. SPECIFICATIONS Applicable Lines: Public Switched Telephone Network Document Size: Max. 216 mm (8 1/2") in width Max. 600 mm (23 5/8") in length Effective Scanning Width: 208 mm (8 3/16") Recording Paper Size: A4: 210×297 mm (8 1/4"×11 11/16 ) Effective Printing Width: 202 mm (8")

  • Page 9: Itu-T No. 1 Test Chart

    KX-FP121AL / KX-FM131AL 1.11. ITU-T No. 1 Test Chart...

  • Page 10: Location Of Controls

    KX-FP121AL / KX-FM131AL 1.12. LOCATION OF CONTROLS 1.12.1. OVERVIEW Note: · The document and recording paper will be ejected from the front of the unit. Do not put anything in front of the unit.

  • Page 11: Control Panel

    KX-FP121AL / KX-FM131AL 1.12.2. CONTROL PANEL...

  • Page 12: Connections

    KX-FP121AL / KX-FM131AL 1.13. CONNECTIONS Connect the telephone line cord. Connect the power cord. When the power is turned on for the first time, the unit will print some basic information. Power cord To the power outlet (220-240 V, 50/60 Hz)
  • Page 13 KX-FP121AL / KX-FM131AL 1.13.1. Connecting to a computer (KX-FM131 ONLY)

  • Page 14: Installation

    KX-FP121AL / KX-FM131AL 1.14. INSTALLATION 1.14.1. 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 15 KX-FP121AL / KX-FM131AL 1.14.2. INSTALLING THE PAPER STACKER Remove the shipping tape from the paper stacker. Lift the front of the unit and insert the paper stacker into the side slots. Side slots Bottom Paper stacker Confirm if the paper stacker is locked into the center slots.

  • Page 16: Installing The Paper Tray

    KX-FP121AL / KX-FM131AL 1.14.4. INSTALLING THE PAPER TRAY Remove the shipping tape from the unit. Shipping tape Insert the two tabs on the paper tray into the slots Paper tray on the back of the unit. Tabs Do not place the unit in areas where the paper tray may be obstructed by a wall, etc.

  • Page 17: Installing The Recording Paper

    KX-FP121AL / KX-FM131AL 1.14.6. INSTALLING THE RECORDING PAPER Letter or legal size recording paper can be loaded. The paper tray can hold up to 150 sheets of 75 g/m (20 lb.) paper. You may use 60 g/m to 90 g/m (16 lb.
  • Page 18 KX-FP121AL / KX-FM131AL 1.14.7. ADDING PAPER TO THE PAPER TRAY 1.14.8. DOCUMENTS THE UNIT CAN FEED...

  • Page 19: To Correct A Mistake

    KX-FP121AL / KX-FM131AL 1.14.9. SETTING YOUR LOGO The logo can be your company, division or name. Press MENU MENU INSERT Display: 1.SYSTEM SET UP Press , then YOUR LOGO Press START/SET/COPY LOGO= Enter your logo, up to 30 characters, by using the dial keypad or JOG DIAL.
  • Page 20 KX-FP121AL / KX-FM131AL 1.14.10. TO SELECT CHARACTERS WITH THE DIAL KEYPAD Note: A hyphen entered in a telephone number is counted as two digits. 1.14.11. TO SELECT CHARACTERS USING THE EASY DIAL...
  • Page 21 KX-FP121AL / KX-FM131AL 1.14.12. REPLACING THE FILM CARTRIDGE...
  • Page 22 KX-FP121AL / KX-FM131AL...

  • Page 23: Maintenance Items And Component Locations

    KX-FP121AL / KX-FM131AL 1.15. MAINTENANCE ITEMS AND COMPONENT LOCATIONS 1.15.1. OUTLINE MAINTENANCE AND REPAIRS ARE PERFORMED USING THE FOLLOWING STEPS. 1. Periodic maintenance Inspect the equipment periodically and if necessary, clean any contaminated parts. 2. Check for breakdowns Look for problems and consider how they arose.
  • Page 24 KX-FP121AL / KX-FM131AL 1.15.2.1. 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 thoroughly. Refer to 1.15.3. MAINTENANCE. Platen Roller If the platen is dirty, clean it with a damp cloth then dry thoroughly.
  • Page 25 KX-FP121AL / KX-FM131AL 1.15.3. MAINTENANCE 1.15.3.1. CLEANING THE DOCUMENT FEEDER UNIT If misfeeding occurs frequently or if dirty patterns or black bands appear on a copied or transmitted document, clean the document feeder. Disconnect the power cord and the telephone line cord.

  • Page 26: Cleaning The Pickup Roller

    KX-FP121AL / KX-FM131AL 1.15.3.3. CLEANING THE PICKUP ROLLER If misfeeding occurs frequently or if spots or black bands appear on a copied or received paper, clean the Pickup roller. Disconnect the power cord and the telephone line cord. Pickup Base Ass'y...

  • Page 27: Troubleshooting Guide

    KX-FP121AL / KX-FM131AL 2 TROUBLESHOOTING GUIDE 2.1. TROUBLESHOOTING SUMMARY 2.1.1. TROUBLESHOOTING After confirming the problem by asking the user, troubleshoot according to the instructions and observe the following precautions. 2.1.2. PRECAUTIONS 1. If there is a problem with the print quality or the paper feed, first check if the installation space and the print paper meets the specifications, the paper selection lever/paper thickness lever is set correctly, and the paper is set correctly without any slack.

  • Page 28: User Recoverable Errors

    KX-FP121AL / KX-FM131AL 2.2. USER RECOVERABLE ERRORS If the unit detects a problem, one or more of the following messages will appear on the display.
  • Page 29 KX-FP121AL / KX-FM131AL Note: The explanations given in the [ ] are for servicemen only.
  • Page 30 KX-FP121AL / KX-FM131AL 2.2.1. PAPER JAM Confirm the recording paper exit. If there is a jammed paper, remove it as follows: Tilt the unit up and pull the jammed recording paper out of the recording paper exit. Remove the jammed recording paper from the...
  • Page 31 KX-FP121AL / KX-FM131AL 2.2.2. RECORDING PAPER JAMS If the unit does not eject any recording paper during reception or copying, the recording paper has jammed. Remove the jammed paper. When paper has jammed under the film cartridge The display will show the following message.

  • Page 32: Troubleshooting Details

    KX-FP121AL / KX-FM131AL 2.3. TROUBLESHOOTING DETAILS 2.3.1. OUTLINE 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 33 KX-FP121AL / KX-FM131AL 2.3.3. TROUBLESHOOTING ITEMS TABLE...
  • Page 34 KX-FP121AL / KX-FM131AL 2.3.3.1. Simple Check List...
  • Page 35 KX-FP121AL / KX-FM131AL 2.3.3.2. ADF (Auto document feed) section 1. No document feed Note: When using thin paper etc., sometimes the document will not feed. Refer to 3.2. ADJUSTING THE FEEDER PRESSURE.
  • Page 36 KX-FP121AL / KX-FM131AL 2. Document JAM...
  • Page 37 KX-FP121AL / KX-FM131AL 3. Multiple feed · When using thick paper etc., sometimes the document will not be fed. Refer to the feed pressure adjustment (3.2. ADJUSTING THE FEEDER PRESSURE). Fig. B Note: When confirming if the characters are expanded or distorted, or if the feed problem occurs, use this test chart format...
  • Page 38 KX-FP121AL / KX-FM131AL 4. Skew *We recommend making a copy of the Fig. B document in "3. Multiple feed" and using it.
  • Page 39 KX-FP121AL / KX-FM131AL 5. The recording paper does not feed. *We recommend making a copy of the Fig. B document in "3. Multiple feed" and using it.
  • Page 40 KX-FP121AL / KX-FM131AL 6. Paper JAM 7. Multiple feed and skew...
  • Page 41 KX-FP121AL / KX-FM131AL 8. The sent fax data is skewed. 9. The received fax data is skewed. 10. Received or copied data is expanded. *We recommend making a copy of the Fig. B document in "3. Multiple feed" and using it.
  • Page 42 KX-FP121AL / KX-FM131AL 11. A blank page is copied. * We recommend making a copy of the Fig. B document in "3. Multiple feed" and using it.
  • Page 43 KX-FP121AL / KX-FM131AL Fig. C 12. A blank page is received.
  • Page 44 KX-FP121AL / KX-FM131AL 13. Black or white vertical line 14. Black or white lateral line on print out * We recommend making a copy of the Fig. B document in "3. Multiple feed" and using it.
  • Page 45 KX-FP121AL / KX-FM131AL 15. An abnormal image is printed. * We recommend making a copy of the Fig. B document in "3. Multiple feed" and using it.
  • Page 46 KX-FP121AL / KX-FM131AL 2.3.3.3. Communication Section Find the problem in the table shown below, and refer to the corresponding troubleshooting procedure in 2.3.3.3.1. Defective facsimile section. Symptom Content Possible cause The paper is not fed properly when faxing. Troubleshooting Problem with the feeding (Nor in the copy mode.)
  • Page 47 KX-FP121AL / KX-FM131AL 2.3.3.3.1. Defective facsimile section 1. Transmit problem...
  • Page 48 KX-FP121AL / KX-FM131AL 2. Sometimes "TRANSMIT ERROR" occurs. Note: "596: Transmit level set" represents a service code. (Refer to 2.4.4. Service Function Table.)
  • Page 49 KX-FP121AL / KX-FM131AL 3. Reception problem First confirm whether the recording paper is installed properly or not before starting troubleshooting. (Refer to "Remarks".) Note: "596: Transmit level set" represents a service code. (Refer to 2.4.4. Service Function Table.) Remarks: Regarding the reception problem, we have investigated the conceivable causes in the flow chart except for the software- related errors.
  • Page 50 KX-FP121AL / KX-FM131AL 4. The unit can copy, but cannot transmit/receive. 5. The unit can copy, but cannot either transmit/receive long distance or international communications. The following two causes are conceivable regarding this symptom. Cause 1: The other party is executing automatic dialing, the call has been received by this unit, and the CED or DIS signal response time is too long.
  • Page 51 KX-FP121AL / KX-FM131AL Cause 2: Erroneous detection because of an echo or an echo canceler. The sea bottom cable or satellite communication path (4 Line Type) (Echo/Echo Canceler) The signal from FAX1 reaches FAX2 via stations 1 and 2, but the reflection signal at station 2 also returns via station 1 (echo).
  • Page 52 KX-FP121AL / KX-FM131AL (Cause C) This model is FAX1 and the other party is FAX2. For transmission from this model to FAX2, FAX2 executes automatic reception and transmits a CED signal (2100 Hz) followed by a DIS signal. As the echo cancelers stops as described in cause B, the echo of the DIS signal returns to FAX2. On the other hand, this model detects the DIS signal and transmits a DCS signal.
  • Page 53 KX-FP121AL / KX-FM131AL 7. How to output the Journal Report: a. Press the MENU button. b. Press "#", then " 8 " and " 4 ". c. Press the START/COPY/SET button. d. The report prints out.
  • Page 54 KX-FP121AL / KX-FM131AL Error code table: (1) CODE (2) RESULT (3) MODE SYMPTOM Counter- measure* PRESSED THE STOP KEY TX & RX Communication was interrupted by the STOP button. DOCUMENT JAMMED The document paper is jammed. NO DOCUMENT No document paper.
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  • Page 63: Remote Programming

    KX-FP121AL / KX-FM131AL 2.3.3.3.2. 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 64 KX-FP121AL / KX-FM131AL 2. Program Mode Table Code Function Set Value Default Remote Setting Set date and time mm/dd/yy hh:mm AM/PM Jan/01/99 Your logo --------- None Your telephone number --------- None Transmission report mode 1:Error / 2:ON / 3:OFF Error...
  • Page 65 KX-FP121AL / KX-FM131AL Code Function Set Value Default Remote Setting ITS auto redial time set 00~99 ITS auto redial line disconnection time set 001~999sec Remote turn-on ring number 01~99 TAM continuous tone detection 1:ON / 2:OFF FAX auto redial time set...

  • Page 66: Digital Board Section

    KX-FP121AL / KX-FM131AL 2.3.3.4. 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 67 IC501 CN505 ASIC OP-RESET ADR[15:13] KSTART,KLATCH KSCLK,KTXD RBA[6:0] OP-PANEL ADR[12:0] KRXD,JOG1,JOG2 DB[7:0] CN504 F1,FTG CISLEDON VIDEO IC502 IC504 IC503 IC510 IC505 SRAM DRAM FLASH MODEM CN508 THDAT,THCLK,THLAT IC550 STB1,STB2,STB3 THRMAL A[4:0] A[17:0] A[16:0] A[9:0] HEAD +24V D[7:0] D[7:0] D[7:0] D[7:0] D[7:0] +24V XROMCS...
  • Page 68 KX-FP121AL / KX-FM131AL You also need to check the signal lines listed here [List 1] when the unit fails to boot up the system. Those signal lines should remain normal. Other signal lines are not directly related to that failure even if they have faults or troubles.
  • Page 69 KX-FP121AL / KX-FM131AL 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 or DRAM normally.) The digital circuit actually operates according to the timing combinations of these signals.
  • Page 70 KX-FP121AL / KX-FM131AL I/O and Pin No. Diagram...
  • Page 71 KX-FP121AL / KX-FM131AL After the power is turned on, the ASIC initializes and checks each IC. The ROM, SRAM, 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 72 KX-FP121AL / KX-FM131AL...
  • Page 73 KX-FP121AL / KX-FM131AL FLASH MEMORY (IC510) If the unit is working correctly but the VOICE GUIDANCE (voice prompt) is not audible, you should check the Flash Memory. A voice message is pre-recorded in the Flash Memory (IC510). So, when you find an IC510 malfunction and replace it with a new one.
  • Page 74 KX-FP121AL / KX-FM131AL NG Example...
  • Page 75 KX-FP121AL / KX-FM131AL 2.3.3.4.2. Check the Status of the Digital Board...
  • Page 76 KX-FP121AL / KX-FM131AL 2.3.3.4.3. RS-232C serial communication (KX-FM131 only)
  • Page 77 KX-FP121AL / KX-FM131AL...
  • Page 78 KX-FP121AL / KX-FM131AL The TEST CONNECTOR is provided as an option. Or you can get a connector available on the market and make the TEST CONNECTOR as shown below.
  • Page 79 KX-FP121AL / KX-FM131AL 2.3.3.5. 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 80 KX-FP121AL / KX-FM131AL Note: { }: Inside the digital board...
  • Page 81 KX-FP121AL / KX-FM131AL 1. Defective ITS (Integrated Telephone System) Section a. 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...
  • Page 82 KX-FP121AL / KX-FM131AL 2.3.3.5.1. 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 83 KX-FP121AL / KX-FM131AL Refer to 2.3.3.5. Analog Board Section.
  • Page 84 KX-FP121AL / KX-FM131AL 2.3.3.6. 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 85 KX-FP121AL / KX-FM131AL 2. Troubleshooting Flow Chart...
  • Page 86 KX-FP121AL / KX-FM131AL 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-circuited, F101 will melt (open). In this case, replace all of the parts (D101, D102, D103, D104, F101).
  • Page 87 KX-FP121AL / KX-FM131AL 2.3.3.7. Operation Panel Section 1. No key operation 2. No LCD indication...
  • Page 88 KX-FP121AL / KX-FM131AL 2.3.3.8. Sensor Board Section (Refer to 6.5. SENSORS AND SWITCHES for the circuit descriptions.) The Test Function makes the sensor circuit check easier. (Refer to 2.5. TEST FUNCTIONS.) For example, as for "COVER OPEN SENSOR", "CO" is turned ON/OFF on the display when you open or close the front cover.
  • Page 89 KX-FP121AL / KX-FM131AL 4. Check the paper top sensor (PS502)......"PAPER JAMMED" 5. Check the film end sensor (PS501)...."FILM EMPTY"...
  • Page 90 KX-FP121AL / KX-FM131AL 2.3.3.9. CIS (Contact Image Sensor) Section Refer to 6.4.4. SCANNING BLOCK.
  • Page 91 KX-FP121AL / KX-FM131AL...
  • Page 92 KX-FP121AL / KX-FM131AL 2.3.3.10. Thermal Head Section (Refer to 6.4.3. THERMAL HEAD.)
  • Page 93 KX-FP121AL / KX-FM131AL 2.3.3.11. PANA LINK...
  • Page 94 KX-FP121AL / KX-FM131AL...
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  • Page 96 KX-FP121AL / KX-FM131AL...
  • Page 97 KX-FP121AL / KX-FM131AL...
  • Page 98 KX-FP121AL / KX-FM131AL 5) Scan and copy Problem Cause & Remedy I cannot scan. The fax machine may be in use. Try again after the other operation is completed. There may not be enough space on the hard disk. Try again after deleting unnecessary files or closing unused applications.
  • Page 99 KX-FP121AL / KX-FM131AL Start Windows 95 or Windows 98 and close The installation will automatically start. all applications. Insert the included CD into your CD-ROM drive. The [Choose Setup Language] dialogue box will appear. Select the desired language that you use with this software from the pull-down menu.
  • Page 100 KX-FP121AL / KX-FM131AL...

  • Page 101: Programming And Lists

    KX-FP121AL / KX-FM131AL 2.4. 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.
  • Page 102 KX-FP121AL / KX-FM131AL 2.4.3. 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 103 KX-FP121AL / KX-FM131AL 2.4.4. SERVICE FUNCTION TABLE Code Function Set Value Effective Range Default Remarks Pause time set X 100 msec 001~600 Recall time set X 10 msec 01~99 Dial speed select 1:10 pps 2:20 pps 1, 2 VOX TIME...
  • Page 104 KX-FP121AL / KX-FM131AL Code Function Set Value Effective Range Default Remarks CNG transmit select 1: OFF 2:ALL Lets you select the CNG output 3:AUTO during FAX transmission. ALL: CNG is output at phase A. AUTO: CNG is output only when automatic dialing is performed.
  • Page 105 KX-FP121AL / KX-FM131AL Code Function Set Value Effective Range Default Remarks Digital SP-phone check See 2.3.3.5.1. Digital Speakerphone. Print test pattern See 2.5. TEST FUNCTIONS. Top margin -------- Left margin -------- A4 size set 1:ON 2:OFF 1, 2 Used only at the factory.
  • Page 106 KX-FP121AL / KX-FM131AL 2.4.5. SERVICE MODE SETTINGS (Example of a printed out list) Note: The above values are the default values.
  • Page 107 KX-FP121AL / KX-FM131AL 2.4.6. HISTORY (10) (11) (12) (15) (14) (13) (16) (17) Factory (18) (19) (20) use only (22) (23) (21) (24) (25) (49) (26) (27) (28) (29) (30) (31) (32) (33) (34) (35) (37) (38) (36) (39) (40)
  • Page 108 KX-FP121AL / KX-FM131AL 2.4.6.1. Descriptions of the HISTORY Report (1) ROM VERSION EPROM version (2) SUM EPROM 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 109 KX-FP121AL / KX-FM131AL (25) NUMBER OF RECORDING MESSAGE The number of messages recorded in TAM. (26) NUMBER OF PC SCAN The number of times multifunction was used for the Scanner. (The number of pages scanned. If the unit does not have a PC interface, NONE will be printed.)
  • Page 110 KX-FP121AL / KX-FM131AL (47) KEY OPERATION -1st 50: (48) KEY OPERATION -Last 50: Indicates 2-digit codes. Refer to 2.5.2. BUTTON CODE TABLE. · 1st 50: History of the first 50 key operations after purchase. (Ex.) If the MENU, # and 9 buttons are pressed, 20, 3C and 39 will be printed.
  • Page 111 KX-FP121AL / KX-FM131AL 2.4.7. 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 112 KX-FP121AL / KX-FM131AL 2.4.7.1. JOURNAL 2 (Refer to JOURNAL 2 in 2.4.7.3. PRINTOUT EXAMPLE.) 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 113 KX-FP121AL / KX-FM131AL 2.4.7.2. JOURNAL 3 (Refer to JOURNAL 3 in 2.4.7.3. PRINTOUT EXAMPLE.) Descriptions: (6) ENCODE Compression Code : MH/MR/MMR (7) MSLT MSLT means Minimum Scan Line Time. Used only at the factory. (8) EQM EQM means Eye Quality Monitor. Used only at the factory.
  • Page 114 KX-FP121AL / KX-FM131AL 2.4.7.3. PRINTOUT EXAMPLE...
  • Page 115 KX-FP121AL / KX-FM131AL...

  • Page 116: Test Functions

    KX-FP121AL / KX-FM131AL 2.5. 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 117: Dtmf Signal Tone Transmit Selection

    KX-FP121AL / KX-FM131AL Note: The numbers in the boxes (XXX) indicate the keys to be input for the various test modes. 2.5.1. DTMF SIGNAL TONE TRANSMIT SELECTION 2.5.2. BUTTON CODE TABLE Note: These codes (00, 01) are only for the data in the History Report.

  • Page 118: Print Test Pattern

    KX-FP121AL / KX-FM131AL 2.5.3. PRINT TEST PATTERN 1. Platen roller (Reference pattern)
  • Page 119 KX-FP121AL / KX-FM131AL 2. Left margin/Top margin (Reference pattern)
  • Page 120 KX-FP121AL / KX-FM131AL 3. Thermal head 1 dot (Reference pattern)
  • Page 121 KX-FP121AL / KX-FM131AL 4. Use this test pattern to confirm the torque limiter for Ink film and platen roller timing. (Reference pattern)

  • Page 122: Adjustments

    KX-FP121AL / KX-FM131AL 3 ADJUSTMENTS 3.1. TABLE OF TEST EQUIPMENT AND TOOLS Test Equipment and Jig Name Jig No. Oscilloscope -------- Extension Cord PQZZ2K12Z, PQZZ8K18Z 3.2. ADJUSTING THE FEEDER PRESSURE If misfeeding of a document such as multiple feeding or no feeding occurs frequently, try to adjust the feeder pressure by following the steps below.

  • Page 123: Document Read Start Position Adjustment

    KX-FP121AL / KX-FM131AL 3.4. DOCUMENT READ START POSITION ADJUSTMENT 1. Connect the AC cord. 2. Copy the document and confirm the read start position of the document. Compare the printout (copy) with the original document. 3. If out of position, adjust the read position.

  • Page 124: Disassembly Instructions

    KX-FP121AL / KX-FM131AL 4 DISASSEMBLY INSTRUCTIONS Ref. No. 1 HOW TO REMOVE THE BOTTOM FRAME Procedure 1) Remove the 3 screws 2) Remove the 4 screws 3) Remove the BOTTOM FRAME. View (A) View (A) SCREW COVER SCREW COVER This SCREW COVER prevents the heat generated by the motor from being con- ducted through the screw.
  • Page 125 KX-FP121AL / KX-FM131AL Ref. No. 2 HOW TO REMOVE THE OPERATION PANEL BLOCK Procedure Taping Position Bend two bunches of harnesses 1) Unhook all the connectors connecting in parallel. the main cabinet with the OPERATION PANEL BLOCK. View (B) CUTOUT...
  • Page 126 KX-FP121AL / KX-FM131AL Ref. No. 3 HOW TO REMOVE THE THERMAL HEAD Procedure Thermal Head Ass'y Parts Installation (1) View (C) 1) Push the COVER OPEN BUTTON to open the operation panel. 2) Remove the 2 screws Do not leave space between 3) Remove the ANGLE.
  • Page 127 KX-FP121AL / KX-FM131AL Ref. No. 4 HOW TO REMOVE THE PLATEN ROLLER Procedure 1) Remove the film cartridge. 2) Push the COVER OPEN BUTTON to open the OPERATION PANEL BLOCK. 3) Detach the SPACERs from the ribs as illustrated below.
  • Page 128 KX-FP121AL / KX-FM131AL Ref. No. 5 HOW TO REMOVE THE OPERATION BOARD, LCD AND DOCUMENT GUIDE Procedure 1) Remove the 6 screws 2) Remove the OPERATION PANEL COVER. 3) Remove the 2 screws 4) Disconnect the CONNECTOR. 5) Remove the OPERATION BOARD.
  • Page 129 KX-FP121AL / KX-FM131AL Ref. No. 6 HOW TO REMOVE THE ANALOG, DIGITAL AND POWER SUPPLY BOARDS AND AC INLET Procedure 1) Remove the 4 screws 2) Remove the ANALOG BOARD. 3) Disconnect the 7 CONNECTORs-A. 4) Remove the 3 screws 5) Remove the DIGITAL BOARD.
  • Page 130 KX-FP121AL / KX-FM131AL Ref. No. 7 (a) HOW TO REMOVE THE MOTOR BLOCK AND THE WIND GEAR ASS'Y Procedure 1 7 (a) 1) Remove the 2 screws 2) Remove the screw 3) Remove the MOTOR BLOCK (See Ref. No. 7 (b)).
  • Page 131 KX-FP121AL / KX-FM131AL Ref. No. 7 (b) HOW TO REMOVE THE MOTOR BLOCK Procedure 7 (b) SPRING (1) Remove the screw (A). (2) Remove the MOTOR and CHASSIS. (3) Remove the SPRING. (4) Remove the screw (B). (5) Remove the SW.
  • Page 132 KX-FP121AL / KX-FM131AL Ref. No. 8 HOW TO REMOVE THE SEPARATION ROLLER Procedure ROLLING SHEET Position 1) Remove the 2 screws 2) Remove the COVER. 3) Remove the 2 screws 4) Detach the SPACERs from the ribs with a screwdriver. (See Fig. C.) 5) Remove the SEPARATION ROLLER.
  • Page 133 KX-FP121AL / KX-FM131AL Ref. No. 9 HOW TO REMOVE THE IMAGE SENSOR (CIS) Procedure 1) Remove the 2 screws 2) Remove the HOLDER. 3) Remove the DOCUMENT FEED ROLLER-A and the DOCUMENT FEED ROLLER-B. 4) Remove the IMAGE SENSOR (CIS).
  • Page 134 KX-FP121AL / KX-FM131AL Ref. No. 10 HOW TO REMOVE THE PICKUP ROLLER Procedure 1) Remove the screws 2) Remove the PICKUP BASE ASS'Y. 3) Remove the PICKUP ROLLER. PICKUP BASE ASS'Y PICKUP ROLLER SPRING* Note*: Be careful not to lose this SPRING.
  • Page 135 KX-FP121AL / KX-FM131AL Ref. No. 11 HOW TO REMOVE THE DOCUMENT TRAY Procedure 1) Pull up and remove the DOCUMENT TRAY in the direction of the arrow. DOCUMENT TRAY...
  • Page 136 KX-FP121AL / KX-FM131AL INSTALLATION POSITION OF THE LEAD WIRES Ferrite Core: Be sure not to let the Ferrite Core touch the Power Supply Board. Power Supply Board Blue Let the leads pass between the Ribs. White Yellow Light Grey Blue...

  • Page 137: How To Replace The Flat Package Ic

    KX-FP121AL / KX-FM131AL 5 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 138: Flat Package Ic Installation Procedure

    KX-FP121AL / KX-FM131AL 5.3. 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 139: Circuit Operations

    KX-FP121AL / KX-FM131AL 6 CIRCUIT OPERATIONS 6.1. CONNECTION DIAGRAM CN501 CN101 TO TEL LINE CN103 BELL MDL SEL LINE RLY BREAK LINE RX MON RX LINE TX CN504 CN502 CN102 CN105 HANDSET +5VA HS MIC+ +5VD HS SP– +24V HS SP+ G.

  • Page 140: General Block Diagram

    KX-FP121AL / KX-FM131AL 6.2. GENERAL BLOCK DIAGRAM The following is an outline of each device IC on the digital board. (Refer to 6.2.1. General Block Diagram.). 1. ASIC (IC501) Composed mainly of an address decoder and a modem control. Controls the general FAX operations.
  • Page 141 OPERATION PANEL SWITCHING POWER SUPPLY LCD PANEL COVER SENSOR OPEN DC/DC RECTIFIER READ CONVERTER CN304 POSITION NOISE IC301 FILTER +24V KEY MATRIX DIGITAL P.C.B +5V +24V CN505 ANALOG P.C.B +5V/BATT CN501, CN502 IC510 IC503 IC502 IC504 CN511 FILM END FLASH DRAM SRAM 4Mbit...

  • Page 142: Control Section

    IC501 CN505 ASIC OP-RESET ADR[15:13] KSTART,KLATCH KSCLK,KTXD RBA[6:0] OP-PANEL ADR[12:0] KRXD,JOG1,JOG2 DB[7:0] CN504 F1,FTG CISLEDON VIDEO IC502 IC504 IC503 IC510 IC505 CN508 SRAM DRAM FLASH MODEM THDAT,THCLK,THLAT IC550 STB1,STB2,STB3 THRMAL A[4:0] A[17:0] A[16:0] A[9:0] HEAD +24V D[7:0] D[7:0] D[7:0] D[7:0] D[7:0] +24V XROMCS...
  • Page 143 KX-FP121AL / KX-FM131AL 6.3.2. MEMORY MAP...
  • Page 144 KX-FP121AL / KX-FM131AL 6.3.3. ASIC (IC501) This custom IC is used for the general FAX operations. 6. IMAGE DATA RAM: 1. CPU: This memory is programmed into the ASIC and uses 8 KB for the image processing. (See Fig. A.*) This model uses a Z80 equivalent to the CPU operating at 12 MHz.
  • Page 145 KX-FP121AL / KX-FM131AL 6.3.4. ROM (IC502) This 512KB ROM (EPROM or MASKROM) carries a common area of 32KB and bank areas which each have 8KB (BK4~BK63). The addresses from 0000H to 7FFFH are for the common area and from 8000H to 9FFFH are for the bank areas.
  • Page 146 KX-FP121AL / KX-FM131AL Descriptions of Pin Distribution (IC501) SIGNAL POWER SUPPLIED VOLTAGE DESCRIPTION AIN1 3.3V CCD IMAGE SIGNAL INPUT AIN2 3.3V THERMISTOR TEMPERATURE WATCH INPUT AIN3 3.3V ----------- AMON 3.3V ANALOG SIGNAL MONITOR TERMINAL VSSB POWER SOURCE (ANALOG GND) VDDB 3.3V...
  • Page 147 KX-FP121AL / KX-FM131AL SIGNAL POWER SUPPLIED VOLTAGE DESCRIPTION XOUT 3.3V SYSTEM CLOCK (24MHz) 3.3V SYSTEM CLOCK (24MHz) POWER SOURCE (GND) VDD (5V) POWER SOURCE (+5V) XTEST 24MHz CLOCK CPUCLK NOT USED TEST1 HIGH FIXED TEST2 HIGH FIXED TEST3 HIGH FIXED...
  • Page 148 KX-FP121AL / KX-FM131AL SIGNAL POWER SUPPLIED VOLTAGE DESCRIPTION XORESET RESET OUTPUT VDD (5V) POWER SOURCE (+5V) POWER SOURCE (GND) XRESETI RESET INPUT WDERR WATCHED ERROR OUTPUT SIGNAL XRSTSWI INPUT PORT (MPOS) XRSTSWO OUTPUT PORT (VOLIN SEL2) XRESETO NOT USED THERMAL HEAD POWER ON/OFF CONTROL...
  • Page 149 KX-FP121AL / KX-FM131AL 6.3.7. RESET CIRCUIT (WATCH DOG TIMER) The output signal from pin 1 of the voltage detect IC (IC509) is input to the ASIC (IC501) 136 pin. Then the output signal from pin 133 of the ASIC (IC501) resets the ASIC.
  • Page 150 KX-FP121AL / KX-FM131AL 6.3.8. SRAM AND RTC BACKUP CIRCUIT 1. Function This unit has a lithium battery (BAT501) which works for the SRAM (IC504) and Real Time Clock IC (RTC: inside IC501). The user parameters for autodial numbers, the system setup data and others are stored in the SRAM (IC504).
  • Page 151 KX-FP121AL / KX-FM131AL 6.3.9. 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 153 of IC501 becomes a low level. Then when it becomes a high level, it triggers point A. In point C, according to the voltage output time, the thermal head´s temperature is detected.

  • Page 152: Facsimile Section

    KX-FP121AL / KX-FM131AL 6.4. FACSIMILE SECTION 6.4.1. IMAGE DATA FLOW DURING FACSIMILE OPERATION COPY (Fine, Super-Fine, Half Tone) 1. Line information is read by CIS (to be used as the reference white level) via route 1, and is input to IC501. Refer to 6.4.2.

  • Page 153: Block Diagram

    KX-FP121AL / KX-FM131AL 6.4.2. Block Diagram IC501 IMAGE SYSTEM SENSOR IC503 ANALOG SIGNAL PROCESSING SECTION DRAM IMAGE PROCESSING SECTION IC502 THERMAL HEAD CONVERTER IC505 MODEM TEL. LINE...

  • Page 154: Thermal Head

    KX-FP121AL / KX-FM131AL 6.4.3. THERMAL HEAD 1. Function This unit utilizes the state of the art thermal printer technology. The ink film is chemically processed. The ink film is comprised of two parts: an ink layer and a base film. When the thermal head contacts this ink film, it emits heat momentarily, and the ink layer is melted and transferred to the paper.
  • Page 155 KX-FP121AL / KX-FM131AL...
  • Page 156 KX-FP121AL / KX-FM131AL 6.4.4. 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 document is inserted and the start button pressed, pin 131 of IC501 goes to a high level and the transistor Q520 turns on.This applies voltage to the LED array to light it.
  • Page 157 KX-FP121AL / KX-FM131AL 6.4.5. STEPPING MOTOR DRIVE CIRCUIT 1. Function The stepping motor works for both transmission and reception. 2. Motor During motor driving, pin 163 of ASIC IC501 becomes a high level, driver pin 12 of IC506 becomes a low level, and Q519 turns on.
  • Page 158 KX-FP121AL / KX-FM131AL When the motor suspends while it is in the receive mode (about 70~80 msec), pin 163 of ASIC IC501 becomes a low level and Q515 turns off. Then Q502 also turns off, and instead of +24 V, +5 V is supplied through D501 so that the motor is held in place.

  • Page 159: Gear Section

    KX-FP121AL / KX-FM131AL 6.4.6. GEAR SECTION This model provides a motor-driven gear mechanism for transmitting/copying documents and printing fax data. In this chapter, you will see how the gears work to select and operate a mode and how the gear section, sensors and rollers mechanically work during the main operations (FAX transmission, FAX reception and Copy).
  • Page 160 KX-FP121AL / KX-FM131AL 6.4.6.2. Mode Operation Once a mode is selected, the Drive Motor Gear rotates counterclockwise (CCW) and then the controlling positions of Swing Gears A, B and C determine which gears convey their drive power in each mode.
  • Page 161 KX-FP121AL / KX-FM131AL B. Paper-Pickup mode (See Fig. B) : Swing Gear A engages G10 and provides its power to the Pickup Roller Gear through G8. The Pickup Roller picks up and pre- feeds a recording paper until the recording paper pushes up the PAPER TOP SENSOR* lever.
  • Page 162 KX-FP121AL / KX-FM131AL C. Receive mode (See Fig. C.) : Swing Gear B engages G13 and conveys its power to the Platen Roller Gear through G6. Then, the Platen Roller feeds recording paper for printing the received data. Fig. C: Receive mode...
  • Page 163 KX-FP121AL / KX-FM131AL D. Copy mode (See Fig. D.) : Swing Gears B and C engages G13 and G4 respectively, and then G6 and G3 drive the Pickup Roller Gear and the Separation Roller Gear for feeding recording paper and documents when the unit is in the copy operation.
  • Page 164 KX-FP121AL / KX-FM131AL 6.4.6.3. Mechanical movements in the main operations (transmitting documents, receiving faxes and copying) 6.4.6.3.1. Idle status...
  • Page 165 KX-FP121AL / KX-FM131AL 6.4.6.3.2. Transmitting documents 6.4.6.3.3. Receiving FAX...
  • Page 166 KX-FP121AL / KX-FM131AL 6.4.6.3.4. Copying...

  • Page 167: Sensors And Switches

    KX-FP121AL / KX-FM131AL 6.5. SENSORS AND SWITCHES All of the sensor and switches are shown below. Sensor Circuit Sensor Sensor or Switch Name Message Error Location Operation Panel PS301 Document [CHECK DOCUMENT] PS302 Document [REMOVE DOCUMENT] Read Position PS303 Cover Open...
  • Page 168 KX-FP121AL / KX-FM131AL 1. [Read Position Sensor (PS302)] When a document is brought to the read position, the shelter plate is lifted, the photo transistor becomes ON, and the input signal of IC301-20 pin (Operation) becomes a low level. When there is no document at the read position, the shelter plate closes the sensor light, the photo transistor becomes OFF, and the input signal of IC301-20 pin (Operation) becomes a high level.
  • Page 169 KX-FP121AL / KX-FM131AL 3. [Cover Open Sensor (PS303)] When the operation panel cover is closed, the shelter plate is lifted, the photo transistor becomes ON, and the input signal of IC301-20 pin (Operation) becomes a low level. When the cover is opened, the shelter plate shuts the sensor light, the photo transistor becomes OFF, and the input signal of IC301-20 pin (Operation) becomes a high level.
  • Page 170 KX-FP121AL / KX-FM131AL 5. [Film End Sensor (PS501)] As the amount of the film decreases, the revolving speed of the rolled film becomes faster. When the film is used up, it comes off from the paper roll. The amount of the remaining film is measured by the revolving speed. When the film stops turning around, the sensor detects the film end.

  • Page 171: Modem Section

    KX-FP121AL / KX-FM131AL 6.6. MODEM SECTION 6.6.1. FUNCTION The unit uses a 1 chip modem (IC505) 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 172 KX-FP121AL / KX-FM131AL 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 173 KX-FP121AL / KX-FM131AL 6. Explanation of Communication and Compression 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 174 KX-FP121AL / KX-FM131AL Bit No. DIS/DTC Transmitter --- T.4 operation Receiver --- T.4 operation Receiver --- T.4 operation 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...
  • Page 175 KX-FP121AL / KX-FM131AL Bit No. DIS/DTC R16×15.4 lines/mm and/or 400×400 pels/25.4 mm R16×15.4 lines/mm and/or 400×400 pels/25.4 mm Inch based resolution preferred Resolution type selection "0" : neritic based resolution "1" : inch based resolution Metric based resolution preferred Don’t care Minimum scan line time capability for higher resolutions Don’t care...
  • Page 176 KX-FP121AL / KX-FM131AL b. Redundancy Compression Process Coding Mode This unit uses one-dimensional MH format.
  • Page 177 KX-FP121AL / KX-FM131AL 6.6.2. MODEM CIRCUIT OPERATION The modem (IC505) has all the hardware satisfying the ITU-T standards mentioned previously. When the ASIC IC501 (77) is brought to a low level, the modem (IC505) is chip-selected and the resistors inside IC are selected by the select signals from ASIC (IC501) ADR0-ADR4.

  • Page 178: Description Of Block Diagram In Analog Section

    KX-FP121AL / KX-FM131AL 6.7. DESCRIPTION OF BLOCK DIAGRAM IN ANALOG SECTION 1. Function The analog section works as an interface between the telephone line. The analog gate array (IC551) on the digital board exchanges FAX TX and RX signals between the MODEM (IC505) and the analog section.
  • Page 179 TO LINE C127 C229 C126 R131 R132 RL101 LF101 CN103 R222 IC101 C129 C123 R127 C216 R223 R221 R130 R128 R126 LOOP T101 C219 RL101 R220 C132 R129 D106 C125 C217 R138 C131 R137 C124 IC101 P-SHORT BREAK LINE LINE TX Q108 R649 C631...

  • Page 180: Ncu Section

    KX-FP121AL / KX-FM131AL 6.8. NCU SECTION 6.8.1. GENERAL NCU is the interface with the telephone line. It is composed of Remote FAX activation circuit, Bell detection circuit, Pulse dial circuit, CPC detection circuit, Line amplifier and sidetone circuits and Multiplexer. The following is a brief explanation of each circuit.
  • Page 181 KX-FP121AL / KX-FM131AL 6.8.5. LINE AMPLIFIER AND SIDE TONE CIRCUIT 1. Circuit Operation The reception signal output from the line transformer T101 is input to pin (6) of IC101 via C126 and R131, and then the signal is amplified at pin (7) of IC101 and sent to the reception system at 12dB.
  • Page 182 KX-FP121AL / KX-FM131AL 6.8.7. CPC (Calling Party Control) DETECTION CIRCUIT 1. Function This circuit detects the signal (cuts the current ) output from the converter when the other party finishes ICM recording and goes into the ON-HOOK status. TAD detects this signal and disconnects the line. When the TAD is operating, pin (4) of PC104 becomes a low level.
  • Page 183 KX-FP121AL / KX-FM131AL 6.8.8. CALLING LINE IDENTIFICATION CIRCUIT 1. Function This unit is compatible with the Caller ID service offered by your local telephone company. To use this feature, you must subscribe to a Caller ID service. The data for the caller ID from the telephone exchange is sent during the interval between the first and second rings of the bell signal.
  • Page 184 KX-FP121AL / KX-FM131AL...

  • Page 185: Its (Integrated Telephone System) And Monitor Section

    KX-FP121AL / KX-FM131AL 6.9. ITS (Integrated telephone System) and MONITOR SECTION 6.9.1. GENERAL The general ITS operation is performed by the special IC505 which has a handset circuit. The alarm tone, the key tone, and the beep are output from the ASIC IC501 (digital board). During the pulse dial operation, the monitor tone is output from the ASIC IC501.

  • Page 186: Fm131 Only)

    KX-FP121AL / KX-FM131AL 6.11. RS-232C SECTION (RS-232C serial communication) (KX-FM131 ONLY) 6.11.1. OUTLINE The model has a communication port designed for RS-232C serial communication. (The EIA Standards specify the interface cable type (No. RS232C) and the voltage levels. You can connect the FAX machine to a printer (200dpi), scanner and fax modem with the interface cable and the attached software CD-ROM.

  • Page 187: Operation Board Section

    KX-FP121AL / KX-FM131AL 6.12. 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 (IC301) and ASIC (IC501: on the DIGITAL BOARD). (Fig.-a) Fig-a Key Matrix...

  • Page 188: Lcd Section

    KX-FP121AL / KX-FM131AL 6.13. LCD SECTION The Gate Array (IC301) works only for writing the ASCII code from the data bus (D4~D7). V0 is supplied for the crystal drive. R326 and R322 are density control resistors. Consequently, in this unit, the timing (positive clock) is generated by the LCD interface circuitry in the gate array (IC301).

  • Page 189: Power Supply Board Section

    KX-FP121AL / KX-FM131AL 6.14. 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 190 KX-FP121AL / KX-FM131AL...
  • Page 191 KX-FP121AL / KX-FM131AL [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 192: For The Schematic Diagrams

    KX-FP121AL / KX-FM131AL 7 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 193: Printed Circuit Board

    R553 R561 Q508 C556 IC511 IC512 R563 R548 C566 C569 R505 R506 R573 R550 C508 D503 R551 C590 R615 R629 R520 R600 C613 R628 R630 R631 R627 R698 R632 R626 R697 R625 R633 R556 R598 R624 R634 R511 R679 C510 R508 R512 R519...

  • Page 194: Component View

    KX-FP121AL / KX-FM131AL 8.2. PRINTED CIRCUIT BOARD (DIGITAL BOARD) : COMPONENT VIEW Pin No. Waveform Pin No. Waveform 8, 9 66, 67 32kHz 24MHz (Component View) +5V/BAT R533 CN503 C574 Q509 L516 R722 IC502 IC510 BAT501 R576 RA506 AUTO L509 L507...
  • Page 195 R243 R244 C255 R241 R240 C232 R246 IC205 R245 R242 C233 C234 R239 R235 R236 C237 C236 L205 R234 L206 R237 C238 IC204 R238 R277 C264 L204 C239 C235 L203 Q204 D101 R204 C254 Q202 R203 R164 C103 Q203 C165 R202 R163 Q201...

  • Page 196: Component View

    KX-FP121AL / KX-FM131AL 8.4. PRINTED CIRCUIT BOARD (ANALOG BOARD) : COMPONENT VIEW (Component View) JJ111 JJ235 CN105 PC105 PC202 PC201 IC208 J334 JJ220 24VDC JJ212 JJ233 C242 JJ217 J314 RL202 J364 JJ218 JJ216 D215 D214 JJ214 J313 JJ213 JJ237 JJ234...

  • Page 197: Printed Circuit Board (Digital Board)

    KX-FP121AL / KX-FM131AL 8.5. PRINTED CIRCUIT BOARD (SWITCHING POWER SUPPLY) (Component View) (Bottom View) SRF913EK CAUTION MITSUMI ELEC. CO., LTD. FOR CONTINUED PROTECTION AGAINST RISK OF FIRE. REPLACE ONLY WITH 68-4494A SAME TYPE T3.15AH 250V CN31 T3.15AH 250V 7694VÐ0 RATINGS...

  • Page 198: Bottom View

    KX-FP121AL / KX-FM131AL 8.6. PRINTED CIRCUIT BOARD (OPERATION BOARD) (Component View) (Bottom View) CN303 CN303 J317 J392 R324 R323 C311 J390 J314 J405 J385 J326 J306 LED304 LED301 R337 R330 R344 J305 C316 C314 J395 C315 J303 R326 C313 R325...

  • Page 199: Schematic Diagram

    KX-FP121AL / KX-FM131AL 9 SCHEMATIC DIAGRAM 9.1. SCHEMATIC DIAGRAM (DIGITAL CIRCUIT) +5VD +24V1 +5VD +5VD +5VD +5VA TEST C573 Z0.1 +5VD Q519 R577 TO POWER UNIT +3.3V/BATT +3.3V+5VD IC510 IC502 IC503 IC504 CN509 A[0] 12 A0 D[0] A[4] 10 DA0...

  • Page 200: Schematic Diagram (Analog Circuit)

    KX-FP121AL / KX-FM131AL 9.2. SCHEMATIC DIAGRAM (ANALOG CIRCUIT) +5VD +24VA R229 R228 R212 R210 Q208 R226 R225 C220 R214 PC203 IC202 R275 C209 C211 R205 D202 D201 IC202 C205 TO LINE JJ223 +5VD +5VD R107 JJ225 C264 C107 JJ206 D101 R132 50V4.7...

  • Page 201: Schematic Diagram (Switching Power Supply)

    KX-FP121AL / KX-FM131AL 9.3. SCHEMATIC DIAGRAM (SWITCHING POWER SUPPLY) 540V Cycle=13 s Cycle=13 s T101 TRANS TH101 CN301 D105 D201 D102 D101 C202 D103 D104 1000p/1K D109 R223 C205 Q101 R105 1/50 0.22/2 IC201 C102 R102 R103 R123 R122 R133...

  • Page 202: Schematic Diagram (Operation Circuit)

    KX-FP121AL / KX-FM131AL 9.4. SCHEMATIC DIAGRAM (OPERATION CIRCUIT) to LCD Not Used LCD CONTRAST CN302 10 GND 9 +5V 8 VO to Digital CN301 7 RS R303 RESET 6 R/W to COG R307 KRXD R304 KTXD 4 D4 R308 KSCLK...

  • Page 203: Printed Circuit Board And Shematic Diagram

    KX-FP121AL / KX-FM131AL 9.5. PRINTED CIRCUIT BOARD AND SHEMATIC DIAGRAM (RS232C BOARD)..KX-FM131 ONLY (COMPONENT VIEW) PFUP1160Z (BOTTOM VIEW) PFUP1160Z...

  • Page 204: Memo

    KX-FP121AL / KX-FM131AL 9.6. MEMO...

  • Page 205: Terminal Guide Of The Ic Z S Transistors And Diodes

    KX-FP121AL / KX-FM131AL 10 TERMINAL GUIDE OF THE IC´S TRANSISTORS AND DIODES...

  • Page 206: Fixtures And Tools

    KX-FP121AL / KX-FM131AL 11 FIXTURES AND TOOLS...

  • Page 207: Cabinet, Mechanical And Electrical Parts

    KX-FP121AL / KX-FM131AL 12 CABINET, MECHANICAL AND ELECTRICAL PARTS LOCATION 12.1. OPERATION PANEL SECTION...

  • Page 208: Upper Cabinet Section

    KX-FP121AL / KX-FM131AL 12.2. UPPER CABINET SECTION...
  • Page 209 KX-FP121AL / KX-FM131AL 12.2.1. PICK UP BASE SECTION...

  • Page 210: Lower Cabinet/P.c.b. Section

    KX-FP121AL / KX-FM131AL 12.3. LOWER CABINET/P.C.B. SECTION...

  • Page 211: Motor Section

    KX-FP121AL / KX-FM131AL 12.4. MOTOR SECTION...

  • Page 212: Actual Size Of Screws And Washer

    KX-FP121AL / KX-FM131AL 12.5. ACTUAL SIZE OF SCREWS AND WASHER...

  • Page 213: Accessories And Packing Materials

    KX-FP121AL / KX-FM131AL 13 ACCESSORIES AND PACKING MATERIALS...

  • Page 214: Replacement Parts List (For Kx-Fp121Al)

    KX-FP121AL / KX-FM131AL 14 REPLACEMENT PARTS LIST (for KX-FP121AL) This replacement parts list is for KX-FP121AL only. Ref. Part No. Part Name & Description Remarks 1. The marking (RTL) indicates that the Retention Time is PFBC1030Z1 BUTTON, START limited for this item.

  • Page 215: Digital Board Parts

    KX-FP121AL / KX-FM131AL Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks PFDN1028Z ROLLER, PLATEN PFNW1006Z WASHER PFDG1027Y GEAR, PLATEN DRIVE PFUS1158Z SPRING, PAPER TRAY Not Used PFDJ1014Z SPACER, SUB ROLLER (12.4. MOTOR SECTION)
  • Page 216 KX-FP121AL / KX-FM131AL Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks IC503 PFVIMS5148F L514 PQLQR2KA113T COIL IC504 PFVIGM6256FF L515 PQLQR2KA113T COIL IC505 PFVIR675813 L517 PQLQR2KA20T COIL IC506 PFVIT2003APS L518 PQLQR2KA113T COIL IC507...
  • Page 217 KX-FP121AL / KX-FM131AL Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R565 ERJ3GEYJ563 R676 ERJ3GEYJ103 R566 ERJ3GEY0R00 R679 ERJ3GEYJ472 4.7k R567 ERJ3GEYJ104 100k R568 ERJ3GEYJ222 2.2k R680 ERJ3GEYJ103 R569 ERJ3GEYJ102 R681 ERJ3GEYJ103...

  • Page 218: Analog Board Parts

    KX-FP121AL / KX-FM131AL Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks C542 ECUV1H104ZFV C645 ECEA0JKA331 C543 ECUV1H104ZFV C646 ECEA0JKA331 C544 ECUV1H104ZFV C647 ECUV1C104KBV C545 ECUV1H104ZFV C648 PQCUV1E104MD C549 PQCUV1H105JC C649 ECUV1C104KBV C550...
  • Page 219 KX-FP121AL / KX-FM131AL Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks (DIODES) R125 PQ4R10XJ122 1.2k R126 PQ4R10XJ241 D101 PFVDDGS1ZB60 DIODE(SI) R127 PQ4R10XJ623 D102 1SS131 DIODE(SI) R128 PQ4R10XJ561 D103 PQVDHZS2B1 DIODE(SI) R129 PQ4R10XJ221...

  • Page 220: Operation Board Parts

    KX-FP121AL / KX-FM131AL Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks C107 ECEA1HKS4R7 (OTHERS) C110 PQCUV1H333JC 0.033 C114 ECQE2E474KZ 0.47 POS101 PFRT002 THERMISTOR RL101 ATXD20328 RELAY C122 PQCUV1H102J 0.001 JJ111 EXCELDR35 COMPONENTS PARTS...

  • Page 221: Power Supply Board Parts

    KX-FP121AL / KX-FM131AL Ref. Part No. Part Name & Description Remarks 14.5. POWER SUPPLY BOARD R327 ERJ3GEYJ563 PARTS R328 ERJ3GEYJ331 R329 ERJ3GEYJ221 Ref. Part No. Part Name & Description Remarks R330 ERJ3GEYJ331 POWER SUPPLY BOARD PARTS R331 ERJ3GEYJ221 R342 ERJ3GEY0R00...

  • Page 222: Hook Board Parts

    KX-FP121AL / KX-FM131AL Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R130 PQ4R10XJ154 150k R131 PQ4R10XJ154 150k PCB5 PFLP1169MZ-B OPERATION BOARD ASS´Y (RTL) R132 PQ4R10XJ154 150k R133 PQ4R10XJ154 150k (CONNECTOR) R205 ERG2SJ681...

  • Page 223: Replacement Parts List (For Kx-Fm131Al)

    KX-FP121AL / KX-FM131AL 15 REPLACEMENT PARTS LIST (for KX-FM131AL) This replacement parts list is for KX-FM131AL only. Ref. Part No. Part Name & Description Remarks 1. The marking (RTL) indicates that the Retention Time is PFBC1030Z1 BUTTON, START limited for this item.

  • Page 224: Digital Board Parts

    KX-FP121AL / KX-FM131AL Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks PFDN1028Z ROLLER, PLATEN PFNW1006Z WASHER PFDG1027Y GEAR, PLATEN DRIVE PFMH1082Z SUB PLATE PFUS1158Z SPRING, PAPER TRAY PFJS11Q48Z CONNECTOR, 11P Not Used...
  • Page 225 KX-FP121AL / KX-FM131AL Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks IC501 PFVIM66410G1 CN508 PQJP12G30Y CONNECTOR,12P IC502 PFWIFM131AL IC (ROM) IC503 PFVIMS5148F CN510 PQJP11G30Y CONNECTOR, 11P IC504 PFVIGM6256FF CN511 PQJP08A19Z CONNECTOR, 8P...
  • Page 226 KX-FP121AL / KX-FM131AL Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R626 ERJ3GEYJ101 R520 ERJ3GEYJ102 R628 ERJ3GEYJ101 R522 ERJ3GEYJ103 R629 ERJ3GEYJ101 R525 ERJ3GEYJ472 4.7k R527 ERJ3GEYJ222 2.2k R630 ERJ3GEYJ101 R528 ERJ3GEY0R00 R631...
  • Page 227 KX-FP121AL / KX-FM131AL Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks C590 ECUV1H472KBV 0.0047 C501 ECUV1H104ZFV C591 ECUV1H104ZFV C504 PQCUV1H473MD 0.047 C594 ECEA1CKS100 C505 ECUV1H104ZFV C596 ECUV1C104KBV C506 ECEA1CK101 C597 ECUV1H104ZFV C507...

  • Page 228: Analog Board Parts

    KX-FP121AL / KX-FM131AL Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks L207 PQLQR2BT COIL L516 PFVF1B601ST CERAMIC FILTER L208 PQLQR2BT COIL R627 PFVF1B601ST CERAMIC FILTER LF101 PFLE003 COIL 15.3. ANALOG BOARD PARTS Ref.

  • Page 229: Operation Board Parts

    KX-FP121AL / KX-FM131AL Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R221 PQ4R10XJ122 1.2k C219 PQCUV1H122KB 0.0012 R222 PQ4R10XJ563 R223 PQ4R10XJ563 C229 PQCUV1H122KB 0.0012 R247 PQ4R10XJ153 C244 PQCUV1H221JC 220P R248 PQ4R10XJ304 300k...

  • Page 230: Power Supply Board Parts

    KX-FP121AL / KX-FM131AL Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks SW305 EVQ11Y05B SWITCH, START/SET/COPY (LIQUID CRYSTAL DISPLAY) SW306 EVQ11Y05B SWITCH, STOP SW307 EVQ11Y05B SWITCH, SP-PHONE CN304 PFAVM190 LIQUID CRYSTAL DISPLAY SW308 EVQ11Y05B SWITCH, "#"...

  • Page 231: Hook Board Parts

    KX-FP121AL / KX-FM131AL Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks D202 PFVDD1NL20U DIODE(SI) C201 EEUFA1V471 C202 ECKD3A102KBP 0.001 (CONNECTORS) C203 PFCEA16A1000 1000 C204 PFCEA35A47M CN31 PQJP2D98Z CONNECTOR, 2PIN C205 PFCEA50A1M CN301...
  • Page 232 KX-FP121AL / KX-FM131AL Ref. Part No. Part Name & Description Remarks PFZZ5K13Z EXTENSION CORD, 5P PQZZ12K4Z EXTENSION CORD, 12P PQZZ2K12Z EXTENSION CORD, 2P PFZZ11K12Z EXTENSION CORD, 11P PQZZ10K4Z EXTENSION CORD, 10P PQZZ8K18Z EXTENSION CORD, 8P PFZZ9K1Z EXTENSION CORD, 9P PFZZ10K1Z...

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