Panasonic KX-FL422CX-B Service Manual
Panasonic KX-FL422CX-B Service Manual

Panasonic KX-FL422CX-B Service Manual

Compact laser fax
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KX-FL422CX-B
Model No.
KX-FL422CX-W
(Black / White version)
(for Asia, Middle Near East and Africa)
© Panasonic Communications Co., Ltd. 2009 Unau-
thorized copying and distribution is a violation of law.
ORDER NO. KMF0905234CE
Compact Laser Fax

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Summary of Contents for Panasonic KX-FL422CX-B

  • Page 1 ORDER NO. KMF0905234CE Compact Laser Fax KX-FL422CX-B Model No. KX-FL422CX-W (Black / White version) (for Asia, Middle Near East and Africa) © Panasonic Communications Co., Ltd. 2009 Unau- thorized copying and distribution is a violation of law.
  • Page 2: Table Of Contents

    KX-FL422CX-B / KX-FL422CX-W TABLE OF CONTENTS PAGE PAGE 1 Safety Precautions -----------------------------------------------5 6.14. LCD Section----------------------------------------------- 49 1.1. For Service Technicians ---------------------------------5 6.15. HVPS (High Voltage Power Supply) Section ----- 50 1.2. AC Caution---------------------------------------------------5 6.15.1. HVPS Specification--------------------------------- 50 1.3. Personal Safety Precautions ----------------------------6 6.15.2.
  • Page 3 KX-FL422CX-B / KX-FL422CX-W 12.3.1. Entering the Remote Programming Mode 15.8.5. Developing and Transcription ------------------ 198 and Changing Service Codes ------------------ 127 15.8.6. Cleaning of Transfer Roller --------------------- 199 12.3.2. Program Mode Table------------------------------ 128 15.8.7. Fixing ------------------------------------------------- 200 12.4. Troubleshooting Details ------------------------------- 130 15.8.8.
  • Page 4 KX-FL422CX-B / KX-FL422CX-W 18.1.4. Operation Cover Section (3)-------------------- 240 18.1.5. Pick Up Section ------------------------------------ 241 18.1.6. Fuser Section--------------------------------------- 242 18.1.7. Lower Main Cabinet Section (1) --------------- 243 18.1.8. Lower Main Cabinet Section (2) --------------- 244 18.1.9. Motor Section--------------------------------------- 245 18.1.10. Fan Motor Section--------------------------------- 246 18.1.11.
  • Page 5: Safety Precautions

    KX-FL422CX-B / KX-FL422CX-W 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 6: Personal Safety Precautions

    KX-FL422CX-B / KX-FL422CX-W 1.3. Personal Safety Precautions 1.3.1. Moving Sections of The Unit Be careful not to let your hair, clothes, fingers, accessories, etc., become caught in any moving sections of the unit. The moving sections of the unit are the rollers and a gear. There is a separation roller and a document feed roller which are rotated by the document feed motor.
  • Page 7: Laser Beam And Fuser Unit Section

    KX-FL422CX-B / KX-FL422CX-W 1.3.3. Laser Beam and Fuser Unit Section • The printer of this unit utilizes a laser. Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. • The fuser unit is inside of the unit and gets hot. Do not touch it when removing the jammed paper or cleaning the lower glass.
  • Page 8: Warning

    KX-FL422CX-B / KX-FL422CX-W 2 Warning 2.1. 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 con- tains lead.
  • Page 9: Insulation Resistance Test

    KX-FL422CX-B / KX-FL422CX-W 2.3. Insulation Resistance Test 1. Unplug the power cord and short the two prongs of the plug with a jumper wire. 2. Turn on the power switch. 3. Measure the resistance value with an ohmmeter between the jumper AC plug and each exposed metal cabinet part (screw heads, control shafts, bottom frame, etc.).
  • Page 10: Specifications

    KX-FL422CX-B / KX-FL422CX-W 3 Specifications Applicable Lines: Public Switched Telephone Network Document Size: Max. 216 mm in width Max. 600 mm in length Effective Scanning Width: 208 mm Effective Printing Width: A4 : 202 mm Letter/Legal:208 mm Transmission Time*: Approx. 4 s/page (ECM-MMR Memory transmission)**...
  • Page 11: General/Introduction

    KX-FL422CX-B / KX-FL422CX-W Recording paper specifications A4: 210 mm × 297 mm Recording paper size: Letter: 216 mm × 279 mm Legal: 216 mm × 356 mm Recording paper weight: 60 g/m to 90 g/m Note for recording paper: • We recommend that you test paper (especially special sizes and types of paper) on the unit before purchasing large quantities.
  • Page 12: Features

    KX-FL422CX-B / KX-FL422CX-W 5 Features General • Help function Display: 1. BASIC SETTINGS 2. FEATURE LIST 3. PHONEBOOK 4. FAX RECEIVING 5. COPIER 6. REPORTS 7. CALLER ID Plain Paper Facsimile Machine • Automatic document feeder (15 sheets) • Quick scan •...
  • Page 13: Technical Descriptions

    KX-FL422CX-B / KX-FL422CX-W 6 Technical Descriptions 6.1. Connection Diagram CN651 READ DOCUMENT POSITION Sensor CN671-2 OPERATION PANEL HOOK BOARD CN671-1 HOOK SW SW641 PS601 SCAN MOTOR CN601 CN403 NAME NAME HSMIC- HSSP+ HSSP- HSMIC+ Speaker CN403 CN406 CN300 CIS MODULE...
  • Page 14: General Block Diagram

    KX-FL422CX-B / KX-FL422CX-W 6.2. General Block Diagram The following is an outline of each device IC on the digital board. 1. SOC (IC101) This custom IC is used for general FAX operations. CPU: This model uses a Z80 equivalent CPU operating at 16MHz.
  • Page 15 KX-FL422CX-B / KX-FL422CX-W...
  • Page 16: Facsimile Section

    KX-FL422CX-B / KX-FL422CX-W 6.3. Facsimile Section 6.3.1. Digital Section 6.3.1.1. SOC (IC101) This custom IC is used for general FAX operations. Description of Pin Distribution (IC101) PIN NO. Assigned Signal EXPLANATION ADR0 A[0] Address Bus ADR1 A[1] Address Bus ADR2...
  • Page 17 KX-FL422CX-B / KX-FL422CX-W PIN NO. Assigned Signal EXPLANATION XRESCS2 Test Pin XCHKCS TP_CHKCS Test Pin SD-RAM IF SD-RAM IF SDWE SDWE SD-RAM IF SDCS SDCS SD-RAM IF SDDQML SDDQML SD-RAM IF SDDQMU SDDQMU SD-RAM IF SDCLK SDCLK SD-RAM Clock XEXTINT...
  • Page 18 KX-FL422CX-B / KX-FL422CX-W PIN NO. Assigned Signal EXPLANATION FANON1 FANON1 Fan Control FANDET2 FANON2 FANON2 Fan Control VIN0 -(PU) VIN1 -(PU) VIN2 -(PU) VOUT0 VOUT1 VOUT2 GIOP30 5CTL +5V Power Control GIOP31 HVERR High Voltage Unit Error GIOP32 CISON CIS IF...
  • Page 19: Rtc Backup Circuit

    KX-FL422CX-B / KX-FL422CX-W 6.3.2. RTC Backup Circuit 1. Function This set has a lithium battery (B531) which works for the Real Time Clock IC (RTC: inside IC101). The RTC continues to work, backed up by a lithium battery even when the power switch is OFF.
  • Page 20: Analog Circuit Of Telephone Section

    KX-FL422CX-B / KX-FL422CX-W 6.4. Analog circuit of Telephone section 6.4.1. General This section is the explanation about analog signal route of voice, beep, fax signal, DTMF signal and so on. Refer to Check sheet for analog signal route. 6.4.1.1. Telephone Monitor 1.
  • Page 21 KX-FL422CX-B / KX-FL422CX-W 6.4.1.4. Analog Block Diagram...
  • Page 22: Modem Section

    KX-FL422CX-B / KX-FL422CX-W 6.5. Modem Section 6.5.1. Function The unit uses MODEM (IC101) 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 via AFE(Analog Front End : IC300).
  • Page 23 KX-FL422CX-B / KX-FL422CX-W 4. Concerning Transmission Time Transmission Time = Control Time + Image Transmission Time Hold Time Transmission time consists of the following. Control time: This is time at the start of transmission when the functions at the sending and receiving sides are confirmed, the transmis- sion mode is established, and transmission and reception are synchronized.
  • Page 24 KX-FL422CX-B / KX-FL422CX-W 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 25 KX-FL422CX-B / KX-FL422CX-W Bit No. DIS/DTC 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 4800 bit/s, V.27 ter 1,0,0,0 V.29 9600 bit/s, V.29...
  • Page 26 KX-FL422CX-B / KX-FL422CX-W Bit No. DIS/DTC 21, 22, 23 Minimum scan line time capability of the receiver Minimum scan line time (0, 0, 0) 20 ms at 3.85 l/mm: T 20 ms 3.85 (0, 0, 1) 40 ms 40 ms at 3.85 l/mm: T 3.85...
  • Page 27 KX-FL422CX-B / KX-FL422CX-W Signal Identification Signal Format Function ——————— Sends 0 continuously for 1.5 seconds at the same speed as the training signal. (Training Check) X0100001 Notifies the sending side that TCF has been properly received. If TCF is not properly received, FTT (Failure To Train) X0100010 is (Confirmation to Receive) relayed to the sender.
  • Page 28: Ncu Section

    KX-FL422CX-B / KX-FL422CX-W 6.6. NCU Section 6.6.1. General NCU is the with the telephone line. It is composed of Bell detection circuit, Pulse dial circuit, Line amplifier and sidetone circuits. The following is a brief explanation of each circuit. 6.6.2.
  • Page 29: Line Amplifier And Side Tone Circuit

    KX-FL422CX-B / KX-FL422CX-W 6.6.5. Line Amplifier and Side Tone Circuit 1. Circuit Operation The reception signal output from the line transformer T401 is input to pin (2) of IC401 via C408, R409 and then the signal is amplified at pin (1) of IC401 and sent to the reception system.
  • Page 30: Caller Id Defection

    KX-FL422CX-B / KX-FL422CX-W 6.6.6. Caller ID Defection 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 sec- ond rings of the bell signal.
  • Page 31: Cis Control Section

    KX-FL422CX-B / KX-FL422CX-W 6.7. 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, a light guide, and photoelectric conversion elements. When an original document is inserted and the start button pressed, pin E1 of IC101 goes to a high level and the transistor Q215 turns on.
  • Page 32: Stepping Motor Drive Section

    KX-FL422CX-B / KX-FL422CX-W 6.8. Stepping Motor Drive Section 6.8.1. 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 IC101 pins B25, C25, D25 and F25. Then stepping pulses are output from driver IC (IC200) pin No 16, 18, 19 and 21, and drives the motor coil.
  • Page 33 KX-FL422CX-B / KX-FL422CX-W 6.8.1.2. Engine Motor Drive Circuit...
  • Page 34: Scan Motor Drive Circuit

    KX-FL422CX-B / KX-FL422CX-W 6.8.2. Scan Motor Drive Circuit 1. Functions This motor functions for main operations including FAX transmission. This feed document paper synchronized for reading. 2. Motor operation During motor driving, pin E18 of IC101 becomes a high level, and Q218, Q212 turns ON.
  • Page 35 KX-FL422CX-B / KX-FL422CX-W 6.8.2.2. Scan Motor (ADF Motor) Drive Circuit DRIVE MODE FUNCTION MODE PHASE PATTERN SPEED SCAN STANDARD 2 phase 579pps SCAN FAX/COPY FINE/PHOTO 2 phase 579pps SCAN FAX/COPY SUPER FINE 1-2 phase 579pps SCAN FAX/COPY PHOTO WITH TEXT...
  • Page 36: Fan Motor Section

    KX-FL422CX-B / KX-FL422CX-W 6.9. FAN Motor Section This FAN is used to radiate heat in the unit. The signal level at pin J25/H25 of IC101 becomes high, the FAN is activated. In this case, the pulse signal as shown below input to pin G25 of IC101 and the rotation of the FAN is detected.
  • Page 37: Solenoid Drive Section

    KX-FL422CX-B / KX-FL422CX-W 6.10. Solenoid Drive Section The solenoid drive circuit controls the pick-up clutch. The solenoid is designed to be driven by +24V, driven by IC101-B12 pin. Diode D203 protects Q229 from backward voltage when the solenoid is driven.
  • Page 38: Lsu (Laser Scanning Unit) Section

    KX-FL422CX-B / KX-FL422CX-W 6.11. LSU (Laser Scanning Unit) Section...
  • Page 39 KX-FL422CX-B / KX-FL422CX-W...
  • Page 40: Sensors And Switches Section

    KX-FL422CX-B / KX-FL422CX-W 6.12. Sensors and Switches Section All of the sensor and switches are shown below. Sensor Circuit Location Sensor Sensor or Switch Name Message Error Operation Panel SW641 Document set [CHECK DOCUMENT] Operation Panel PS601 Paper Feed [REMOVE DOCUMENT]...
  • Page 41: Paper Feed Sensor

    KX-FL422CX-B / KX-FL422CX-W 6.12.2. Paper Feed Sensor The Sensor detects the front edge of the document. When there is no document, the shelter plate shuts off the sensor light, the photo-transistor turns OFF, and the input signal of IC101-A9pin becomes a high level. When a document is detected, the shelter plate let the sensor light pass through, the photo- transistor turns ON, and the input signal of IC101-A9pin becomes a low level.
  • Page 42: Top Cover Open Switch

    KX-FL422CX-B / KX-FL422CX-W 6.12.4. Top Cover Open Switch 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 IC101-N25pin becomes a low level. When the printer cover is open, the switches turns OFF, and the input signal of IC101-N25pin becomes a high level.
  • Page 43: Drum Detection

    KX-FL422CX-B / KX-FL422CX-W 6.12.5. Drum Detection DRUM SENSOR is not arranged. DRUM unit is detected when HVERR SENSOR arranged in H.V.P.S becomes effective. High Voltage ERROR Status Drum sensor Signal (IC101-P25) Abnormal DRUM can not be detected Low level Normal...
  • Page 44: Paper Exit Sensor

    KX-FL422CX-B / KX-FL422CX-W 6.12.7. Paper Exit Sensor.."PAPER JAMMED" The sensor detects whether the recording paper exit out or not. When there is no recording paper at the position of the sensor, the shelter plate closes the sensor light, the photo-transistor fot tarus OFF, and the input signal of IC101-C8pin becomes high level.
  • Page 45: Toner Sensor

    KX-FL422CX-B / KX-FL422CX-W 6.12.8. Toner Sensor.."TONER EMPTY", "TONER LOW", "CHANGE DRUM" The Sensor detects whether or not the Drum unit and the toner are present. When there is not Drum unit, Magnetic Field Sensor IC (IC512) turns off, and the input signal of IC101-A11 pin (Digital P.C.B) becomes a High level over 9s.
  • Page 46 KX-FL422CX-B / KX-FL422CX-W 6.12.8.1. 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 47 KX-FL422CX-B / KX-FL422CX-W 6.12.8.2. Drum Detection Flow...
  • Page 48: Operation Board Section

    KX-FL422CX-B / KX-FL422CX-W 6.13. 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 (IC601) and SOC (IC101: on the DIGITAL BOARD). The key matrix table is shown below.
  • Page 49: Lcd Section

    KX-FL422CX-B / KX-FL422CX-W 6.14. LCD Section The Gate Array (IC601) works only for writing the ASCII code from the data bus (D4~D7). V0 is supplied for the crystal drive. R123 and R124 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 50: Hvps (High Voltage Power Supply) Section

    KX-FL422CX-B / KX-FL422CX-W 6.15. HVPS (High Voltage Power Supply) Section 6.15.1. HVPS Specification Charge (CHG) Grid Developing DC Transfer (TRA-) Transfer (TRA+) Output Characteristics Constant current Constant voltage Constant voltage Constant current Constant voltage (Variable) Nominal Output Voltage 4.25kV 475±18V 220V±15V...
  • Page 51: Bias (Transfer(-) Bias) Unit

    KX-FL422CX-B / KX-FL422CX-W 6.15.4. TRA(+) BIAS (Transfer(+) BIAS)/TRA(-) BIAS (Transfer(-) BIAS) Unit When CHG REM is “L” and TRA CLK is “open”, Charge BIAS(180µA) is output from CHG OUTPUT, and at the same time Trans- fer(+)BIAS(800V) is output from TRA OUTPUT. When 5.425kHz PWM(Plus Width Modulation) signal is input to TRA CLK through...
  • Page 52: Heat Lamp Control Circuit

    KX-FL422CX-B / KX-FL422CX-W 6.16. Heat Lamp Control Circuit The temperature of the fixing part of the Fixing Unit is converted to a voltage by THERMISTOR and input to IC106-4pin. The heater turns ON/OFF the photo-coupler PC2 at the heater control port (IC106-29pin), and is turned ON/OFF at the triac SCR1.
  • Page 53 KX-FL422CX-B / KX-FL422CX-W Refer to Call Service Troubleshooting Guide (P.137)
  • Page 54 KX-FL422CX-B / KX-FL422CX-W 2. Safety Protection a. 2 thermostats are provided with the unit, and the heater circuit is shut down when their surface temperatures became over 200°C. b. The heater control circuit of IC101 has the built-in function that the software turns off the heater control automatically if the heater is not turned ON every a fixed time.
  • Page 55 KX-FL422CX-B / KX-FL422CX-W 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]. The correspondence readings between temperature measured by fixing thermistor and HEX readings Temperature(°C) HEX Reading Temperature(°C) HEX Reading Temperature(°C)
  • Page 56 KX-FL422CX-B / KX-FL422CX-W Temperature(°C) HEX Reading Temperature(°C) HEX Reading Temperature(°C) HEX Reading Note: Hex reading : 01h or below = Short of Thermistor Hex reading : F9h or over = Open of Thermistor...
  • Page 57: Power Supply Board Section

    KX-FL422CX-B / KX-FL422CX-W 6.17. 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 58: Dc-Dc Power Supply

    KX-FL422CX-B / KX-FL422CX-W 6.18. DC-DC POWER SUPPLY IC201 is FET installed 2ch Synchronous switching regulator. Output Voltage is +1.8V and +3.3V. Oscillation frequency is 2MHz.
  • Page 59: Location Of Controls And Components

    KX-FL422CX-B / KX-FL422CX-W 7 Location of Controls and Components 7.1. Overview (1) Handset (2) Speaker (3) Document guides (4)Paper tray (5) Recording paper entrance (6) Tension plate (7) Document stacker (8) Paper stacker (9) Recording paper exit (10) Document exit...
  • Page 60: Control Panel

    KX-FL422CX-B / KX-FL422CX-W 7.2. Control Panel (1) Auto Answer (2) Broadcast (3) Redial/Pause (4) Junk Fax Prohibitor (5) Caller ID (6) Menu (7) Quick Scan (8) Help (9) Stop (10) Copy (11) Station keys (12) Lower (13) Manual Broad (14) Tone...
  • Page 61: Installation Instructions

    KX-FL422CX-B / KX-FL422CX-W 8 Installation Instructions 8.1. 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 62: Connections

    KX-FL422CX-B / KX-FL422CX-W 8.2. Connections Caution: • When you operate this product, the power outlet should be near the product and easily accessible. • Be sure to use the telephone line cord supplied in this unit. • Do not extend the telephone line cord.
  • Page 63: Paper Stacker

    KX-FL422CX-B / KX-FL422CX-W 8.3. Paper Stacker Line up the slots (1) in the paper stacker with the pegs (2) on the bottom of the unit, then insert the two tabs of the paper stacker into the slots on the unit (3).
  • Page 64: Recording Paper

    KX-FL422CX-B / KX-FL422CX-W 8.6. Recording Paper A4, letter or legal size recording paper can be used. The unit can hold: — Up to 250 sheets of 60 g/m to 75 g/m paper. — Up to 230 sheets of 80 g/m paper.
  • Page 65 KX-FL422CX-B / KX-FL422CX-W Push the tension plate back (1). To use A4 size paper Insert the tabs on the A4 paper guides (1) into the slots. • "L" is shown on the A4 paper guide for the left side. "R" is shown on the A4 paper guide for the right side.
  • Page 66: Document Requirements

    KX-FL422CX-B / KX-FL422CX-W 8.7. Document Requirements Document Weight • Single sheet:45 g/m to 90 g/m • Multiple sheet:60 g/m to 80 g/m Note: • Remove clips, staples or other fasteners. • Do not set the following types of documents: (Make a copy of the document using another copier and set the copy.)
  • Page 67: Replacing The Toner Cartridge And The Drum Unit

    To check the drum life and quality, please print the printer test list. If printing quality is still poor, replace the toner cartridge and drum unit. To ensure that the unit operates properly, we recommend the use of Panasonic toner cartridge (Model No. KX-FAT88E/KX- FAT88A) and drum unit (Model No. KX-FAD89E/KX-FAD89A).
  • Page 68 KX-FL422CX-B / KX-FL422CX-W Lift open the front cover (1), holding the dotted area (2) on the right side. Remove the drum and toner unit (1) by holding the two tabs. • Do not touch the transfer roller (2). • If you replace the toner cartridge and the drum unit at the same time, skip to step 9.
  • Page 69 KX-FL422CX-B / KX-FL422CX-W Remove the used cartridge (1) from the drum unit (2). • The toner may stick to the cartridge and the drum unit. Be careful when handling. • Do not drop the toner on the black drum surface (3).
  • Page 70 KX-FL422CX-B / KX-FL422CX-W Make sure that the triangles (1) match, to install the toner cartridge cor- rectly. • If the lower glass (2) is dirty, clean it with a soft and dry cloth. Install the drum and toner unit (1) by holding the tabs.
  • Page 71: Waste Disposal Method

    KX-FL422CX-B / KX-FL422CX-W • Close the front cover (1) by pushing down on both sides, until locked. Place the handset on the cradle and attach the document stacker. • While the unit displays “PLEASE WAIT”, do not open the front cover, or disconnect the power cord.
  • Page 72: Operating Instructions

    KX-FL422CX-B / KX-FL422CX-W 9 Operating Instructions 9.1. To Select Characters with the Dial Keypad Pressing the dial keys will select a character as shown below. 9.2. To Select Characters Using [ + ] or [ - ] Instead of pressing the dial keys, you can select characters using [ + ] or [ - ].
  • Page 73: Setting Your Logo

    KX-FL422CX-B / KX-FL422CX-W 9.3. Setting Your Logo The logo can be your name or the name of your company.
  • Page 74: Test Mode

    KX-FL422CX-B / KX-FL422CX-W 10 Test Mode 10.1. 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-FL422CX-B / KX-FL422CX-W Test Mode Type of Mode Code Function Operation after code input SENSOR CHECK Service Mode “8” “1” “5” First of all, press the copy button, and confirm the action of ON/OFF. For each sensor’s operation, refer to Sensors and Switches Section (P.40).
  • Page 76: Button Code Table

    KX-FL422CX-B / KX-FL422CX-W 10.1.2. Button Code Table...
  • Page 77: Print Test Pattern

    KX-FL422CX-B / KX-FL422CX-W 10.1.3. Print Test Pattern 1. NO.01 3. NO.03 2. NO.06 • These print test patterns are just image printing, and differ- ent from actual ones. When it is required to judge the print quality, compare with the printing of a nondefective machine.
  • Page 78: Service Mode

    KX-FL422CX-B / KX-FL422CX-W 11 Service Mode 11.1. 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 79: Service Function Table

    KX-FL422CX-B / KX-FL422CX-W 11.1.3. Service Function Table Code Function Set Value Effective Default Remarks Range Pause time set X 100 msec 001~600 ---------- Flash time X 10 msec 01-09 ---------- Dial speed select 1:10 pps 1, 2 ---------- 2:20 pps V.34 transmit speed selection...
  • Page 80 KX-FL422CX-B / KX-FL422CX-W Code Function Set Value Effective Default Remarks Range CNG transmit select 1:OFF Lets you select the CNG output during FAX trans- 2:ALL mission. ALL: CNG is output at phase A. AUTO: 3:AUTO CNG id output only when automatic dialing is per- formed.
  • Page 81 KX-FL422CX-B / KX-FL422CX-W Code Function Set Value Effective Default Remarks Range Print test pattern See Print Test Pattern P.77 Top margin ---------- Left margin ---------- DTMF ON time X msec 060~200 ---------- DTMF OFF time X msec 060~200 ---------- History list P.84...
  • Page 82: The Example Of The Printed List

    KX-FL422CX-B / KX-FL422CX-W 11.2. The Example of the Printed List 11.2.1. 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 83: Service Mode Settings (Example Of A Printed Out List)

    KX-FL422CX-B / KX-FL422CX-W 11.2.2. Service Mode Settings (Example of a printed out list) Note: The above values are the default values.
  • Page 84: History (Example Of A Printed Out List)

    KX-FL422CX-B / KX-FL422CX-W 11.2.3. 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.85).
  • Page 85 KX-FL422CX-B / KX-FL422CX-W 11.2.3.1. Descriptions of the History Report (1) ROM VERSION (30) Not used FLASH ROM version (31) NUMBER OF PRINTING HELP (2) SUM The number of help lists printed until now. FLASH ROM internal data calculation. (32) NUMBER OF DIVIDED PRINTING IN FAX RECEP-...
  • Page 86: Troubleshooting Guide

    KX-FL422CX-B / KX-FL422CX-W 12 Troubleshooting Guide 12.1. 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 87 KX-FL422CX-B / KX-FL422CX-W DISPLAY MESSAGE CAUSE AND REMEDY • The document is jammed. Remove the jammed document. • The document is longer than 600 mm. Press [STOP] to remove the document. Divide the document into two or more sheets and try again.
  • Page 88: Error Messages-Report

    KX-FL422CX-B / KX-FL422CX-W 12.2. Error Messages-Report 12.2.1. Journal Report 1. Press the MENU button. 2. Press “#”, then “8” and “3”. 3. Press the SET button. 4. The report prints out. CROSS REFERENCE: Features(P.12) Error code table: (1) CODE (2) RESULT...
  • Page 89 KX-FL422CX-B / KX-FL422CX-W...
  • Page 90 KX-FL422CX-B / KX-FL422CX-W CROSS REFERENCE: Test Functions (P.74)
  • Page 91 KX-FL422CX-B / KX-FL422CX-W CROSS REFERENCE: Test Functions (P.74)
  • Page 92 KX-FL422CX-B / KX-FL422CX-W CROSS REFERENCE: Test Functions (P.74)
  • Page 93 KX-FL422CX-B / KX-FL422CX-W CROSS REFERENCE: Test Functions (P.74)
  • Page 94 KX-FL422CX-B / KX-FL422CX-W...
  • Page 95 KX-FL422CX-B / KX-FL422CX-W...
  • Page 96 KX-FL422CX-B / KX-FL422CX-W CROSS REFERENCE: Test Functions (P.74)
  • Page 97: Special Service Journal Reports

    KX-FL422CX-B / KX-FL422CX-W 12.2.2. 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 98 KX-FL422CX-B / KX-FL422CX-W 12.2.2.1. Journal 2 Refer to JOURNAL 2 in Printout Example(P.99). 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 99 KX-FL422CX-B / KX-FL422CX-W 12.2.2.2. Journal 3 Refer to JOURNAL 3 in Printout Example(P.99). Description (6) ENCODE (10) MAKER CODE Compression Code: MH/MR/MMR This shows a 2 digit code of the other party's fax machine brand. (7) MSLT MSLT means Minimum Scan Line Time. Used only at the 0E: “KX”...
  • Page 100 KX-FL422CX-B / KX-FL422CX-W...
  • Page 101: Communication Section

    KX-FL422CX-B / KX-FL422CX-W 12.2.3. Communication Section Find the problem in the table shown below, and refer to the corresponding troubleshooting procedure in Defective Facsimile Section (P.102). Symptom Content Possible cause The paper dose not feed properly when faxing. Troubleshooting Problem with the feeding mecha- nism.
  • Page 102 KX-FL422CX-B / KX-FL422CX-W 12.2.3.1. Defective Facsimile Section 12.2.3.1.1. Transmit Problem CROSS REFERENCE: Cleaning the Inside of the Unit (P.187) ADF (Auto Document Feed) Section (P.156) Operation Panel Section (P.110)
  • Page 103 KX-FL422CX-B / KX-FL422CX-W 12.2.3.1.2. Sometime There is a Transmit Problem Note: “596: Transmit level set” represents a service code. Refer to the Service Function Table (P.79). “717: Transmit speed select” represents a service code. Refer to the Service Function Table (P.79).
  • Page 104 KX-FL422CX-B / KX-FL422CX-W 12.2.3.1.3. 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.79).
  • Page 105 KX-FL422CX-B / KX-FL422CX-W 12.2.3.1.4. The Unit can copy, but cannot Transmit / Receive CROSS REFERENCE: Test Functions (P.74)
  • Page 106: Initializing Error

    KX-FL422CX-B / KX-FL422CX-W 12.2.4. Initializing Error After the power is turned on, the IC101 initializes and checks each IC. The ROM (IC102), and SDRAM (IC103) are checked. If initialization fails for the ICs, the system will not boot up. In this case, please find the cause as follows.
  • Page 107: Analog Board Section

    KX-FL422CX-B / KX-FL422CX-W 12.2.5. 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 108 KX-FL422CX-B / KX-FL422CX-W 12.2.5.2. 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...
  • Page 109 KX-FL422CX-B / KX-FL422CX-W 4. No tone dialing CROSS REFERENCE: Check sheet for analog signal route (P.107)
  • Page 110: Operation Panel Section

    KX-FL422CX-B / KX-FL422CX-W 12.2.5.3. Operation Panel Section Refer to Test Functions (P.74). 1. NO KEY OPERATION 2. NO LCD INDICATION CROSS REFERENCE: Test Functions (P.74)
  • Page 111: Sensor Section

    KX-FL422CX-B / KX-FL422CX-W 12.2.5.4. 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 ..“CHECK DOCUMENT” 2. Check the paper feed sensor..“REMOVE DOCUMENT”...
  • Page 112 KX-FL422CX-B / KX-FL422CX-W 5. Check the regist sensor..“CHECK PAPER”, “PRESS START” 6. Check the exit switch..“PAPER JAMMED” 7. Check the toner sensor..“TONER LOW”, “CHANGE DRUM” 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.
  • Page 113 KX-FL422CX-B / KX-FL422CX-W 12.2.5.5. Motor Section 12.2.5.5.1. Engine Motor...
  • Page 114 KX-FL422CX-B / KX-FL422CX-W 12.2.5.5.2. Scan (ADF) Motor...
  • Page 115: Lsu Section

    KX-FL422CX-B / KX-FL422CX-W 12.2.5.6. LSU Section CROSS REFERENCE: LSU (Laser Scanning Unit) Section (P.38)
  • Page 116: Cis (Contact Image Sensor) Section

    KX-FL422CX-B / KX-FL422CX-W 12.2.6. CIS (Contact Image Sensor) Section CROSS REFERENCE: Test Functions (P.74)
  • Page 117: High Voltage Value Check Point

    KX-FL422CX-B / KX-FL422CX-W 12.2.7. High Voltage Value Check Point Measurement Procedure 1. Unplug the unit, and open the unit cover. 2. Remove the developing unit, if it is equipped. 3. Connect the wire to the terminal to be measured (Fig. 2). The wire should be put out of the unit not to interfere in other termi- nals.
  • Page 118 KX-FL422CX-B / KX-FL422CX-W...
  • Page 119: High Voltage Section

    KX-FL422CX-B / KX-FL422CX-W 12.2.8. High Voltage Section 1. Main...
  • Page 120 KX-FL422CX-B / KX-FL422CX-W 2. CHG, GRID...
  • Page 121 KX-FL422CX-B / KX-FL422CX-W 3. TRA (+)
  • Page 122 KX-FL422CX-B / KX-FL422CX-W 4. DEV...
  • Page 123 KX-FL422CX-B / KX-FL422CX-W...
  • Page 124: Power Supply Board Section

    KX-FL422CX-B / KX-FL422CX-W 12.2.9. Power Supply Board Section 12.2.9.1. Key Components for Troubleshooting Check the following parts first: F2, C5, and Q1. 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 125: Troubleshooting Flow Chart

    KX-FL422CX-B / KX-FL422CX-W 12.2.9.2. Troubleshooting Flow Chart...
  • Page 126: Remote Programming

    KX-FL422CX-B / KX-FL422CX-W 12.3. 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 127: Entering The Remote Programming Mode And Changing Service Codes

    KX-FL422CX-B / KX-FL422CX-W 12.3.1. Entering the Remote Programming Mode and Changing Service Codes CROSS REFERENCE: Program Mode Table (P.128)
  • Page 128: Program Mode Table

    KX-FL422CX-B / KX-FL422CX-W 12.3.2. Program Mode Table Code Function Set Value Default Remote Set- ting Set date and time dd/mm/yy hh:mm 01/01/09 Your logo --------- None Your fax telephone number --------- None Transmission report mode 2:ON / 3:OFF / 1:ERROR...
  • Page 129 KX-FL422CX-B / KX-FL422CX-W Code Function Set Value Default Remote Set- ting FAX auto redial line disconnection time set 001~999sec 185sec CNG transmit select 1:OFF / 2:ALL / 3:AUTO Time between CED and 300bps 1:75ms / 2:500ms / 3:1sec 75ms Overseas DIS detection select...
  • Page 130: Troubleshooting Details

    KX-FL422CX-B / KX-FL422CX-W 12.4. Troubleshooting Details 12.4.1. 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 131: Initialization

    KX-FL422CX-B / KX-FL422CX-W 12.4.3. 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 132: Simple Check List

    KX-FL422CX-B / KX-FL422CX-W 12.4.4. Simple Check List Note: Check according to the service code referring to Test Functions (P.74)
  • Page 133: Simplified Troubleshooting Guide

    KX-FL422CX-B / KX-FL422CX-W 12.4.5. Simplified Troubleshooting Guide 12.4.5.1. Printing Symptom Cause Countermeasure Ghost Image (P.143) 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.119)
  • Page 134: Recording Paper Feed

    KX-FL422CX-B / KX-FL422CX-W 12.4.5.2. Recording Paper Feed Symptom Cause Countermeasure Multiple Feed (P.151) Dirty or failed the pickup roller Clean or replace the pickup roller Dirty or failed the pickup rubber Clean or replace the separation rubber The Recording Paper is...
  • Page 135 KX-FL422CX-B / KX-FL422CX-W 12.4.5.3. Copy and Fax Symptom Cause Countermeasure NO DOCUMENT FEED (No Failed the document sensor lever Replace the document sensor lever Document Feed, Docu- Failed the document sensor Go to Document Sensor (P.41) ment Jam and Multiple Doc-...
  • Page 136 KX-FL422CX-B / KX-FL422CX-W 12.4.5.4. Others Symptom Cause Countermeasure Cannot print legal size Not selected the legal mode Select the legal mode in the user programming mode 'CHECK DRUM' on the LCD The drum unit can not be detected. Go to Drum Detection (P.43) •...
  • Page 137: Call Service Troubleshooting Guide

    KX-FL422CX-B / KX-FL422CX-W 12.4.6. 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.38). • 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 138: Call Service

    KX-FL422CX-B / KX-FL422CX-W 12.4.6.1. 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 IC106-32pin (XREADY).
  • Page 139 KX-FL422CX-B / KX-FL422CX-W 12.4.6.2. 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 IC101-A15pin. (XHSYNC) Note: As for the "Pulse" waveform of the above flow chart, see the timing chart.
  • Page 140 KX-FL422CX-B / KX-FL422CX-W 12.4.6.3. 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 101-A5pin.
  • Page 141 KX-FL422CX-B / KX-FL422CX-W 12.4.6.4. 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 101-G25pin. "CALL SERVICE 4" is displayed when it detects NG five times continuously.
  • Page 142 KX-FL422CX-B / KX-FL422CX-W 12.4.6.5. Call Service 6 “CALL SERVICE 6” indicates that abnormal charge voltage is output from the high voltage unit.
  • Page 143: Print

    KX-FL422CX-B / KX-FL422CX-W 12.4.7. Print 12.4.7.1. Ghost Image CROSS REFERENCE: High Voltage Section(P.119) Power Supply Board Section(P.124)
  • Page 144 KX-FL422CX-B / KX-FL422CX-W 12.4.7.2. 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.115)
  • Page 145 KX-FL422CX-B / KX-FL422CX-W 12.4.7.3. Dark or White Horizontal Line CROSS REFERENCE: High Voltage Section (P.119)
  • Page 146 KX-FL422CX-B / KX-FL422CX-W 12.4.7.4. Dirty or Hulk Darkness Black Ground CROSS REFERENCE: High Voltage Section (P.119)
  • Page 147: Black Print

    KX-FL422CX-B / KX-FL422CX-W 12.4.7.5. Black Print CROSS REFERENCE: High Voltage Section (P.119) LSU Section (P.115)
  • Page 148: Light Print

    KX-FL422CX-B / KX-FL422CX-W 12.4.7.6. Light Print CROSS REFERENCE: High Voltage Section (P.119)
  • Page 149 KX-FL422CX-B / KX-FL422CX-W 12.4.7.7. Black Density is Light or Uneven CROSS REFERENCE: High Voltage Section (P.119)
  • Page 150: Blank Print

    KX-FL422CX-B / KX-FL422CX-W 12.4.7.8. Blank Print 12.4.7.9. Black or White Point...
  • Page 151: Recording Paper Feed

    KX-FL422CX-B / KX-FL422CX-W 12.4.8. Recording Paper Feed 12.4.8.1. Multiple Feed 12.4.8.2. The Recording Paper is Waved or Wrinkled...
  • Page 152 KX-FL422CX-B / KX-FL422CX-W 12.4.8.3. Skew...
  • Page 153 KX-FL422CX-B / KX-FL422CX-W 12.4.8.4. The Recording Paper Does Not Feed CROSS REFERENCE: Sensor Section (P.111) Motor Section (P.113)
  • Page 154 KX-FL422CX-B / KX-FL422CX-W 12.4.8.5. The Recording Paper Jam...
  • Page 155 KX-FL422CX-B / KX-FL422CX-W CROSS REFERENCE: Paper Exit Sensor.."PAPER JAMMED" (P.44) FAN Motor Section (P.36) Regist Sensor (P.43) When the recording paper jam is occurred, the service mode *630 distinguishes the cause. 0:No Paper Jam 1:Failed pick up 2:The paper top sensor is not turned OFF although the fixed time had passed since the sensor was turned ON.
  • Page 156: Adf (Auto Document Feed) Section

    KX-FL422CX-B / KX-FL422CX-W 12.4.9. ADF (Auto Document Feed) Section 12.4.9.1. No Document Feed, Document Jam and Multiple Document Feed CROSS REFERENCE: Sensor Section (P.111)
  • Page 157 KX-FL422CX-B / KX-FL422CX-W CROSS REFERENCE: Motor Section (P.113)
  • Page 158 KX-FL422CX-B / KX-FL422CX-W 12.4.9.2. Skew (ADF)
  • Page 159 KX-FL422CX-B / KX-FL422CX-W 12.4.9.3. The Sent Fax Data is Skewed CROSS REFERENCE: Skew (ADF) (P.158) 12.4.9.4. The Received Fax Data is Skewed CROSS REFERENCE: Skew (P.152)
  • Page 160 KX-FL422CX-B / KX-FL422CX-W 12.4.9.5. The Received or Copied Data is Expanded...
  • Page 161 KX-FL422CX-B / KX-FL422CX-W 12.4.9.6. Black or White Vertical Line is Copied...
  • Page 162 KX-FL422CX-B / KX-FL422CX-W 12.4.9.7. An Abnormal Image is Copied CROSS REFERENCE: CIS (Contact Image Sensor) Section (P.116)
  • Page 163: Service Fixture & Tools

    KX-FL422CX-B / KX-FL422CX-W 13 Service Fixture & Tools...
  • Page 164: Disassembly And Assembly Instructions

    KX-FL422CX-B / KX-FL422CX-W 14 Disassembly and Assembly Instructions 14.1. Upper Main Cabinet Section CROSS REFERENCE: A-6: How to Remove the Separation Rubber (P.170) A-1: How to Remove the Front Cover (P.166) A-7: How to Remove the Transfer Roller (P.171) A-2: How to Remove the Pick Up Unit (P.167) A-8: How to Remove the Separation Roller (P.172)
  • Page 165: Lower Main Cabinet Section

    KX-FL422CX-B / KX-FL422CX-W 14.2. Lower Main Cabinet Section CROSS REFERENCE: B-1: How to Remove the Bottom Plate (P.173) B-2: How to Remove the Analog Board (P.173) B-3: How to Remove the High Voltage Power Board (P.174) B-4: How to Remove the Laser Unit (P.174) B-5: How to Remove the Fan Unit (P.175)
  • Page 166: How To Remove The Pick Up Unit

    KX-FL422CX-B / KX-FL422CX-W 14.3. How to Remove the Front Cover...
  • Page 167: How To Remove The Pick Up Unit

    KX-FL422CX-B / KX-FL422CX-W 14.4. How to Remove the Pick Up Unit...
  • Page 168: How To Remove The Pick Up Roller

    KX-FL422CX-B / KX-FL422CX-W 14.5. How to Remove the Pick Up Roller...
  • Page 169: How To Remove The Operation Board

    KX-FL422CX-B / KX-FL422CX-W 14.6. How to Remove the Operation Board...
  • Page 170: How To Remove The Lower Flame

    KX-FL422CX-B / KX-FL422CX-W 14.7. How to Remove the Lower Flame 14.8. How to Remove the Separation Rubber...
  • Page 171: How To Remove The Transfer Roller

    KX-FL422CX-B / KX-FL422CX-W 14.9. How to Remove the Transfer Roller...
  • Page 172: How To Remove The Separation Roller

    KX-FL422CX-B / KX-FL422CX-W 14.10. How to Remove the Separation Roller...
  • Page 173: How To Remove The Bottom Plate

    KX-FL422CX-B / KX-FL422CX-W 14.11. How to Remove the Bottom Plate 14.12. How to Remove the Analog Board...
  • Page 174: How To Remove The High Voltage Power Board

    KX-FL422CX-B / KX-FL422CX-W 14.13. How to Remove the High Voltage Power Board 14.14. How to Remove the Laser Unit...
  • Page 175: How To Remove The Fan Unit

    KX-FL422CX-B / KX-FL422CX-W 14.15. How to Remove the Fan Unit 14.16. How to Remove the Low Voltage Power Board...
  • Page 176: How To Remove The Digital Board

    KX-FL422CX-B / KX-FL422CX-W 14.17. How to Remove the Digital Board 14.18. How to Remove the Main Motor...
  • Page 177: How To Remove The Resitst Sensor Board

    KX-FL422CX-B / KX-FL422CX-W 14.19. How to Remove the Resitst Sensor Board 14.20. How to Remove the Toner Sensor Board...
  • Page 178: How To Remove The Fuser Unit

    KX-FL422CX-B / KX-FL422CX-W 14.21. How to Remove the Fuser Unit...
  • Page 179: How To Remove The Cis

    KX-FL422CX-B / KX-FL422CX-W 14.22. How to Remove the CIS...
  • Page 180: Installation Position Of The Lead

    KX-FL422CX-B / KX-FL422CX-W 14.23. Installation Position of the Lead...
  • Page 181 KX-FL422CX-B / KX-FL422CX-W...
  • Page 182: Maintenance

    KX-FL422CX-B / KX-FL422CX-W 15 Maintenance 15.1. Maintenance Items and Component Locations 15.1.1. Outlines 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 183: Maintenance Cycle

    KX-FL422CX-B / KX-FL422CX-W 15.1.2.2. Maintenance Cycle Item Cleaning Cycle ADF Separation Roller (Ref.No.70) 3 months Paper Feed Roller (Ref.No.8) 3 months ADF Separation Rubber (Ref. No.80) 3 months Pick up Roller (Ref No.157) 3 months Separation Rubber (Ref. No.150) 3 months Document Feed Roller (Ref.No.72)
  • Page 184: Printing

    KX-FL422CX-B / KX-FL422CX-W 15.2. Printing • The motor pinion rotates in the direction shown in the figure. • The gears of fixing and developing parts are driven by the GEAR IDLER 67. • The GEAR PAPER FEED ROLLER drives the roller.
  • Page 185: Printing (Paper Pick Up)

    KX-FL422CX-B / KX-FL422CX-W 15.3. Printing (Paper Pick Up) During printing • When the SOLENOID is turned ON, the LEVER PICK UP CLUTCH is hooked on the RING of GEAR CLUTCH. It causes the GEAR PICKUP PAPER to rotate. • The recording paper is pressed by the PICKUP ROLLER and the top paper is separated and fed.
  • Page 186: Scanning (Adf)

    KX-FL422CX-B / KX-FL422CX-W 15.4. Scanning (ADF) • DOCUMENT TRANSMISSION (ADF) When the tip of the document is set 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 feed roller carries the document...
  • Page 187: Maintenance

    KX-FL422CX-B / KX-FL422CX-W 15.5. Maintenance 15.5.1. Cleaning the Inside of the Unit Clean the inside of the unit: — If misfeeding of your original occurs frequently. — 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.
  • Page 188 KX-FL422CX-B / KX-FL422CX-W • Do not touch the transfer roller (2) Clean the document feeder roller (1) with a cloth moistened with iso- propyl rubbing alcohol, and let all parts dry thoroughly. Clean the upper glass (2) with a soft and dry cloth.
  • Page 189 KX-FL422CX-B / KX-FL422CX-W Re-install the drum and toner unit (1) by holding the tabs. • Make sure that the triangles (2) match to install the drum and toner unit correctly. Close the front cover (1) by pushing down on both sides, until locked.
  • Page 190: Document Jams

    KX-FL422CX-B / KX-FL422CX-W 15.6. Document Jams Note: • Do not pull out the jammed document forcibly before open- ing the front cover. Remove the handset and document stacker. Lift open the front cover (1), holding the dotted area (2) on the right side.
  • Page 191 KX-FL422CX-B / KX-FL422CX-W Note: • Do not touch the transfer roller (2). Remove the jammed document carefully (1). Push back the inner cover. Close the front cover (1) by pushing down on both sides, until locked. Place the handset on the cradle and attach the document...
  • Page 192: Recording Paper Jams

    KX-FL422CX-B / KX-FL422CX-W 15.7. Recording Paper Jams The display will show the following. 15.7.1. When the recording paper has jammed near the drum and toner unit Remove the handset and document stacker. Lift open the front cover (1), holding the dotted area (2) on the right side.
  • Page 193: When The Recording Paper Has Jammed Near The Recording Paper Exit

    KX-FL422CX-B / KX-FL422CX-W 15.7.2. When the recording paper has jammed near the recording paper exit: Remove the handset and document stacker. Lift open the front cover (1), holding the dotted area (2) on the right side. Remove the recording paper (1), then remove the drum and toner unit (2) to allow the jammed paper (3) to pull free from the rear cab- inet.
  • Page 194 KX-FL422CX-B / KX-FL422CX-W Remove the jammed paper (1) from the fuser unit by pulling it upwards carefully, then install the drum and toner unit. Push back the levers (1) to the original position. Close the front cover (1) by pushing down on both sides, until locked.
  • Page 195 KX-FL422CX-B / KX-FL422CX-W Pull the tension plate forward (1), then re-insert the recording paper. • Before re-inserting, make sure to fan and straighten the record- ing paper. Push back the tension plate.
  • Page 196: Printing Operation Principle

    KX-FL422CX-B / KX-FL422CX-W 15.8. Printing Operation Principle 15.8.1. Process Chart and Process Bias 15.8.2. 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 Transfer Layer (CGTL).
  • Page 197: Exposing

    KX-FL422CX-B / KX-FL422CX-W 15.8.3. 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 Transfer Layer. Passing through the Charge Generation Transfer Layer which conducts the minus charge, the plus-charged drum's surface is neutralized to be skipped.
  • Page 198: Developing And Transcription

    KX-FL422CX-B / KX-FL422CX-W 15.8.5. Developing and Transcription The developing is the stage that the OPC drum with an invisible image is changed to visible by the toner. The drum unit consists of mixing paddle, toner supply roller, developing roller, developing blade, charge wire, grid plate and OPC drum. The bias volt- age is added to the developing roller and toner supply roller.
  • Page 199: Cleaning Of Transfer Roller

    KX-FL422CX-B / KX-FL422CX-W 15.8.6. Cleaning of Transfer Roller 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 200: Fixing

    KX-FL422CX-B / KX-FL422CX-W 15.8.7. Fixing On the process of the transfer, 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 201: Timing Chart (When Printing One Sheets Of Paper) Basic

    KX-FL422CX-B / KX-FL422CX-W 15.8.8. Timing Chart (When Printing One Sheets of Paper) BASIC...
  • Page 202: Timing Chart [Initializing (Long)]

    KX-FL422CX-B / KX-FL422CX-W 15.8.9. Timing Chart [Initializing (Long)]...
  • Page 203: Terminal Guide Of The Ics Transistors And Diodes

    KX-FL422CX-B / KX-FL422CX-W 15.9. Terminal Guide of the ICs Transistors and Diodes 15.9.1. Digital Board 15.9.2. Analog Board 15.10. How to Replace the Flat Pack- age 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...
  • Page 204: Preparation

    KX-FL422CX-B / KX-FL422CX-W 15.10.1. Preparation 15.10.1.1. For Power Supply Board • SOLDER Sparkle Solder 115A-1, 115B-1 OR Almit Solder KR-19, KR-19RMA • Soldering iron Recommended power consumption is between 30 W to 40 W. Temperature of Copper Rod 662 ± 50°F (350 ± 10°C) (An expert may handle a 60~80 W iron, but a beginner might damage the foil by overheating.)
  • Page 205: Flat Package Ic Installation Procedure

    KX-FL422CX-B / KX-FL422CX-W 15.10.3. 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 206: Digital Board Section

    KX-FL422CX-B / KX-FL422CX-W 15.11. 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 207: Ng Example

    KX-FL422CX-B / KX-FL422CX-W 15.11.1. NG Example...
  • Page 208: Test Chart

    KX-FL422CX-B / KX-FL422CX-W 15.12. Test Chart 15.12.1. ITU-T No.1 Test Chart...
  • Page 209: Itu-T No.2 Test Chart

    KX-FL422CX-B / KX-FL422CX-W 15.12.2. ITU-T No.2 Test Chart...
  • Page 210: Schematic Diagram

    KX-FL422CX-B / KX-FL422CX-W 16 Schematic Diagram 16.1. For Schematic Diagram 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 211 KX-FL422CX-B / KX-FL422CX-W Memo...
  • Page 212: Digital Board (Pcb1)

    V4 SENIN2 003:7C BELL GOP26/VOUT1 A11 SENIN3 002:8D TNREMP GOP27/VOUT2 C20 SENCTL0 AC20 002:8C SENCTL0 IOP15/ADR13 TP_A13 D20 SENCTL1 AD20 002:8B SENCTL1 IOP16/ADR14 TP_A14 V24 SENCTL2 AC21 IOP17/ADR15 TP_A15 Y24 SENCTL3 24CTL 002:5B KX-FL422CX-B / KX-FL422CX-W DIGITAL BOARD No.1 (1/2)
  • Page 213 AB16 VSS37 E2 DACGND AC12 VSS38 AC14 L102 VSS39 H6 NC1 C175 1.8V AA6 NC2 RTCPWRCORE VOUT AA20 NC3 001:5E C174 F23 NC4 +3.3V IC100 R142 1 DS RESET 3 NC XRESET 001:3C;001:4B KX-FL422CX-B / KX-FL422CX-W DIGITAL BOARD No.1 (2/2)
  • Page 214: Digital Board(2)

    CN101 VCC2 VREF2 OUT2A RNF2 R226 0(1608) OUT2B TEST OUT1B RNF1 OUT1A MMPWR1001:3E VCC1 VREF1 PGND2 IN1B TO ENGINE MOTOR IN1A MMPWR2001:3E R232 MMENB 001:3E R290 XRMA 001:3D R291 001:3D Q211 R228 100k KX-FL422CX-B / KX-FL422CX-W DIGITAL BOARD No.2 (1/2)
  • Page 215 FANON1 KSTART KSTART 3 FANON R258 R262 001:2E 001:3D R272 39 1/2W KTXD KTXD FANDET 2 FANDET R259 L207 001:2E KSCLK KSCLK 1 GND R260 R264 001:3E OPERST OPERST CN113 +5VD TO FAN KX-FL422CX-B / KX-FL422CX-W DIGITAL BOARD No.2 (2/2)
  • Page 216: Digital Board(3)

    001:2D +3.3V ATXD TXAP 30 GPIO6 TXAN 31 GPIO7 32 SDOUT *RST 001:2D ARXD R304 001:2D ASPCLK R316 FAX-TX 001:2D ABITCLK R360 001:2D AFERST FAX-RX HS TX HS RX MONITOR Caller ID Tone KX-FL422CX-B / KX-FL422CX-W DIGITAL BOARD No.3 (1/2)
  • Page 217 10 AG 11 HSRX 12 HSTX 001:3E 13 SPMUTE SPMUTE 14 SPRX 001:3E HSTXMUTE 002:9B 15 PICK PICK 16 DG R341 4.7k R331 FAX-TX FAX-RX HS TX HS RX MONITOR Caller ID Tone KX-FL422CX-B / KX-FL422CX-W DIGITAL BOARD No.3 (2/2)
  • Page 218: Analog Board (Pcb2)

    14 SPRX (13) 15 PICK 16 DG CN407 PICK IC402 (14) R466 (15) C461 R461 R465 CN406 100n FAX-TX R462 FAX-RX C462 HS TX +5VA HS RX +2.5V MONITOR JJ420 Caller ID JJ421 Tone KX-FL422CX-B / KX-FL422CX-W ANALOG BOARD (1/2)
  • Page 219 HSMIC- +5VA L412 HSSP+ C416 L413 (14) HSSP- L414 HSMIC+ 16V 100n CN403 R419 C414 C418 Q405 R428 (15) C428 6.3V 47u Q402 D411 FAX-TX FAX-RX HS TX HS RX MONITOR Caller ID Tone KX-FL422CX-B / KX-FL422CX-W ANALOG BOARD (2/2)
  • Page 220: Sensor Boards (Pcb3-6)

    KX-FL422CX-B / KX-FL422CX-W EXIT SENSOR BOARD DRUM & TONER SENSOR CN511 IC512 1 VDD TNREMP VOUT 3 GND KX-FL422CX-B / KX-FL422CX-W DRUM & TONER SENSOR BOARD VARISTOR SENSOR ZNR521 FG_DEV FG_EARTH KX-FL422CX-B / KX-FL422CX-W VARISTOR SENSOR BOARD RESIST SENSOR CN531...
  • Page 221: Operation Board (Pcb7)

    KX-FL422CX-B / KX-FL422CX-W 16.5. Operation Board (PCB7)
  • Page 222: High Voltage Power Supply Board (Pcb8)

    KX-FL422CX-B / KX-FL422CX-W 16.6. High Voltage Power Supply Board (PCB8)
  • Page 223: Low Voltage Power Supply Board (Pcb9)

    KX-FL422CX-B / KX-FL422CX-W 16.7. Low Voltage Power Supply Board (PCB9)
  • Page 224 KX-FL422CX-B / KX-FL422CX-W Memo...
  • Page 225: Printed Circuit Board

    L302 C173 C171 R337 C169 C161 C329 C165 R307 C162 C159 C160 R339 L301 R341 C214 R359 R213 Q205 C357 R209 C211 C345 C336 R274 C338 C335 C352 C337 FLASH PNLB1667Z -GW PROGRAMMER KX-FL422CX-B / KX-FL422CX-W DIGITAL BOARD COMPONENT VIEW...
  • Page 226: Digital Board: Bottom View

    C119 R131 C112 TP_GIOP52 C207 Q203 C176 IC104 R242 R157 R212 R241 C362 R211 C363 C203 D100 C258 C264 C200 Q230 R256 R246 R276 R156 Q206 R278 R287 C170 R202 R254 C250 L208 KX-FL422CX-B / KX-FL422CX-W DIGITAL BOARD BOTTOM VIEW...
  • Page 227: Analog Board (Pcb2)

    C401 T401 JJ407 C423 PC403 R431 J406 D415 J407 R427 Q409 C427 C434 J401 J434 SA401 J432 J405 J431 JJ405 J408 J439 J440 JJ406 J402 JJ404 JJ402 L405 D404 D406 PC402 JJ421 C428 KX-FL422CX-B / KX-FL422CX-W ANALOG BOARD COMPONENT VIEW...
  • Page 228: Analog Board: Bottom View

    IC404 C480 R450 C475 C481 R476 R448 R472 C471 C467 C470 C474 R469 C473 IC403 R471 R465 C469 C472 R417 R470 R468 R435 C431 L411 L412 R466 D411 L414 C435 L413 R443 C432 KX-FL422CX-B / KX-FL422CX-W ANALOG BOARD BOTTOM VIEW...
  • Page 229: Exit Sensor Board

    CN501 KX-FL422CX-B / KX-FL422CX-W EXIT SENSOR BOARD 17.4. Drum & Toner Sensor Board C511 PNLB1668Z -RL-c PNLB1668Z -RL-c KX-FL422CX-B / KX-FL422CX-W DRUM & TONER SENSOR BOARD 17.5. Varistor Sensor Board PCB-CH ZNR521 PNLB1668Z -RL-d PNLB1668Z -RL-d KX-FL422CX-B / KX-FL422CX-W VARISTOR SENSOR BOARD...
  • Page 230: Resist Sensor Board

    KX-FL422CX-B / KX-FL422CX-W 17.6. Resist Sensor Board PS531 C531 C533 R531 R532 C532 KX-FL422CX-B / KX-FL422CX-W RESIST SENSOR BOARD...
  • Page 231: Operation Board (Pcb7)

    KX-FL422CX-B / KX-FL422CX-W 17.7. Operation Board (PCB7) 17.7.1. Operation Board: Component View JS636 CN601 JS635 C601 JS601 JS613 JS611 JS614 JS621 JS612 JS630 JS622 JS633 JS619 JS603 JS627 JS626 JS628 JS629 KX-FL422CX-B / KX-FL422CX-W OPERATION BOARD COMPONENT VIEW...
  • Page 232: Operation Board: Bottom View

    R690 C651 C652 R632 R683 R692 R605 R636 C604 R638 LED5 R634 C681 R633 C641 R641 R637 R682 R642 LED6 C606 C608 R661 R699 R662 C607 R671 C605 R672 R671 C602 L601 C603 KX-FL422CX-B / KX-FL422CX-W OPERATION BOARD BOTTOM VIEW...
  • Page 233: High Voltage Power Supply Board (Pcb8)

    KX-FL422CX-B / KX-FL422CX-W 17.8. High Voltage Power Supply Board (PCB8) 17.8.1. High Voltage Power Supply Board: Component View EUK1MNA90HA KX-FL422CX-B / KX-FL422CX-W HIGH VOLTAGE POWER SUPPLY BOARD (COMPONENT VIEW)
  • Page 234: High Voltage Power Supply Board: Bottom View

    KX-FL422CX-B / KX-FL422CX-W 17.8.2. High Voltage Power Supply Board: Bottom View EUK1MNA90HA KX-FL422CX-B / KX-FL422CX-W HIGH VOLTAGE POWER SUPPLY BOARD (BOTTOM VIEW)
  • Page 235: Low Voltage Power Supply Board (Pcb9)

    KX-FL422CX-B / KX-FL422CX-W 17.9. Low Voltage Power Supply Board (PCB9) 17.9.1. Low Voltage Power Supply Board: Component View N0AC2GG00003 KX-FL422CX-B / KX-FL422CX-W LOW VOLTAGE POWER SUPPLY BOARD (COMPONENT VIEW)
  • Page 236: Low Voltage Power Supply Board: Bottom View

    KX-FL422CX-B / KX-FL422CX-W 17.9.2. Low Voltage Power Supply Board: Bottom View KX-FL422CX-B / KX-FL422CX-W LOW VOLTAGE POWER SUPPLY BOARD (BOTTOM VIEW)
  • Page 237: Exploded View And Replacement Parts List

    KX-FL422CX-B / KX-FL422CX-W 18 Exploded View and Replacement Parts List 18.1. Cabinet, Mechanical and Electrical Parts Location 18.1.1. General Section...
  • Page 238: Operation Cover Section (1)

    KX-FL422CX-B / KX-FL422CX-W 18.1.2. Operation Cover Section (1)
  • Page 239: Operation Cover Section (2)

    KX-FL422CX-B / KX-FL422CX-W 18.1.3. Operation Cover Section (2)
  • Page 240: Operation Cover Section (3)

    KX-FL422CX-B / KX-FL422CX-W 18.1.4. Operation Cover Section (3)
  • Page 241: Pick Up Section

    KX-FL422CX-B / KX-FL422CX-W 18.1.5. Pick Up Section...
  • Page 242: Fuser Section

    KX-FL422CX-B / KX-FL422CX-W 18.1.6. Fuser Section...
  • Page 243: Lower Main Cabinet Section (1)

    KX-FL422CX-B / KX-FL422CX-W 18.1.7. Lower Main Cabinet Section (1)
  • Page 244: Lower Main Cabinet Section (2)

    KX-FL422CX-B / KX-FL422CX-W 18.1.8. Lower Main Cabinet Section (2)
  • Page 245: Motor Section

    KX-FL422CX-B / KX-FL422CX-W 18.1.9. Motor Section...
  • Page 246: Fan Motor Section

    KX-FL422CX-B / KX-FL422CX-W 18.1.10. Fan Motor Section...
  • Page 247: Lower Cabinet Section (3)

    KX-FL422CX-B / KX-FL422CX-W 18.1.11. Lower Cabinet Section (3)
  • Page 248: Gear Section

    KX-FL422CX-B / KX-FL422CX-W 18.1.12. Gear Section...
  • Page 249: Actual Size Of Screws And Washer

    KX-FL422CX-B / KX-FL422CX-W 18.1.13. Actual Size of Screws and Washer...
  • Page 250: Accessories And Packing Materials

    KX-FL422CX-B / KX-FL422CX-W 18.1.14. Accessories and Packing Materials...
  • Page 251: Replacement Parts List

    KX-FL422CX-B / KX-FL422CX-W 18.2. Replacement Parts List Safety Ref. Part No. Part Name & Description Remarks RTL (Retention Time Limited) PFHR1542Z CASE/COVER PS-HB Notes: PFDE1204W LEVER POM-HB PFDF1097Z SHAFT 1. The marking (RTL) indicates that the Retention Time is PQDR9685Y...
  • Page 252 KX-FL422CX-B / KX-FL422CX-W Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks PNKV1040X2 COVER(KX-FL422CX-W) PS-HB PFKE1050Z3 CABINET COVER (KX-FL422CX-B) PNUS1078Z COIL SPRING PFKE1050Z4 CABINET COVER PNDE1019Z LEVER POM-HB (KX-FL422CX-W) PNUS1091Z BAR SPRING 18.2.1.6.
  • Page 253 KX-FL422CX-B / KX-FL422CX-W 18.2.1.12. Gear Section Safety Ref. Part No. Part Name & Description Remarks WLR18YK26CM4 LEAD WIRE PQMX10010Z CASE/COVER Safety Ref. Part No. Part Name & Description Remarks K2AH3G000011 JACK/SOCKET PFDG1307Z GEAR POM-HB B2P3-VH CONNECTOR PFDG1189Z GEAR POM-HB J0KE00000115 INSULATOR...
  • Page 254: Digital Board Parts

    KX-FL422CX-B / KX-FL422CX-W Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks PFPP1053Z PROTECTION COVER C114 ECUE1A104KBQ 0.1 PFPH1046Y PROTECTION COVER C117 ECUE1H300JCQ 30p C118 ECUE1C103KBQ 0.01 18.2.2. Digital Board Parts C119 ECUE1C104ZFQ 0.1...
  • Page 255 KX-FL422CX-B / KX-FL422CX-W Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks C224 ECUV1A105ZFV 1 C356 ECUE1H102KBQ 0.001 C226 ECUE1A104KBQ 0.1 C357 ECUE1H102KBQ 0.001 C227 ECUE1A104KBQ 0.1 C358 ECUE1H102KBQ 0.001 C228 ECUE1H102KBQ 0.001...
  • Page 256 KX-FL422CX-B / KX-FL422CX-W Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks R139 ERJ2GEJ472X 4.7k R277 ERJ2GEJ562X 5.6k R140 ERJ2GEJ472X 4.7k R278 ERJ2GEJ563 R143 ERJ2GEJ103 R279 ERJ3GEYJ103 R144 ERJ2GEJ104 100k R280...
  • Page 257: Analog Board Parts

    KX-FL422CX-B / KX-FL422CX-W Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks (CRYSTAL OSCILLATORS) L415 PQLQR2KA20T COIL X100 H0A327200147 CRYSTAL OSCILLATOR R404 PQLQR2KA20T COIL X101 H0J245500087 CRYSTAL OSCILLATOR (PHOTO ELECTRIC TRANS-...
  • Page 258: Drum & Toner Sensor Board Parts

    KX-FL422CX-B / KX-FL422CX-W 18.2.5. Drum & Toner Sensor Board Parts Safety Ref. Part No. Part Name & Description Remarks CN651 L5DAAFB00001 LIQUID CRYSTAL DISPLAY (COILS) Safety Ref. Part No. Part Name & Description Remarks L601 PQLQR2KA113 COIL (LEAD WIRES) PCB4 PNLP2119CX-C DRUM &...
  • Page 259: High Voltage Power Supply Board Parts

    KX-FL422CX-B / KX-FL422CX-W Safety Ref. Part No. Part Name & Description Remarks SW634 EVQ11Y05B SPECIAL SWITCH SW635 EVQ11Y05B SPECIAL SWITCH SW636 EVQ11Y05B SPECIAL SWITCH SW637 EVQ11Y05B SPECIAL SWITCH SW638 EVQ11Y05B SPECIAL SWITCH SW639 EVQ11Y05B SPECIAL SWITCH SW640 EVQ11Y05B SPECIAL SWITCH...
  • Page 260 KX-FL422CX-B / KX-FL422CX-W HI(Q) KXFL422CXB KXFL422CXW...

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