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Panasonic KX-FC255CX-S, Service Manual

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Panasonic KX-FC255CX-S Service Manual Download Page 29

29

KX-FC255CX-S

6.6.

Modem Section

6.6.1.

Function

The unit uses a 1 chip modem (IC3) 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.
During a receiving operation, the analogue image signals which are received via the telephone line are demodulated and con-
verted into digital image signals. The communication format and procedures for FAX communication are standardized by ITU-T.
This 1 chip modem (IC3) has hardware which sends and detects all of the necessary signals for FAX communication. 
It can be controlled by writing commands from the CPU (IC10: inside ASIC) to the register in the modem (IC3).
This modem (IC3) also sends DTMF signals, generates a call tone (from the speaker), and detects a busy tone and dial tones.

Overview of Facsimile Communication Procedures (ITU-T Recommendation):

1. ON CCIT (International Telegraph and Telephone Consultative Committee)

The No. XIV Group of CCITT, one of the four permanent organizations of the International Telecommunications Union (ITU),
investigates and make recommendations on international standards for facsimiles.

2. Definition of Each Group

• Group I (G1) 

Official A-4 size documents without using formats which reduce the band width of a signal are sent over telephone lines.Deter-
mined in 1968. 
Transmission for about 6 minutes at a scanning line density of 3.85 lines/mm.

• Group II (G2) 

Using reduction technology in the modulation/demodulation format, an A-4 size document is sent at an official scanning line den-
sity of 3.85 lines/mm for about 3 minutes. 
Methods to suppress redundancy are not used.
Determined in 1976.

• Group III (G3) 

Method of suppressing redundancy in the image signal prior to modulation is used. An A-4 size document is sent within about
one minute.
Determined in 1980.

• Group IV (G4) 

Transmission is via the data network. A method is provided for suppressing redundancy in signals prior to transmission, and 
error-free reception of transmission is possible.
The scope of these facsimile applications is not limited simply to transmission of written statements. Through symbiotic linkages
with other communication methods, it can be expected to expand to include integrated services.

Summary of Contents for KX-FC255CX-S

Page 1: ...lectric Industrial Co Ltd All rights reserved Unauthorized copying and distri bution is a violation of law ORDER NO KMF0610062CE Compact Plain Paper FAX with DECT KX FC255CX S Silver version for Asia and Middle Near East ...

Page 2: ...ons 141 14 1 General Section 141 14 2 Disassembly Flowchart 142 14 3 Disassembly Procedure 145 15 Measurements and Adjustments 171 15 1 Cordless Base Section Digital Board Adjustment 171 15 2 Adjustment Standard Base Unit 175 15 3 Adjustment Standard Charger Unit 177 15 4 The Setting Method of JIG Cordless Handset 178 15 5 Adjustment Standard Cordless Handset 180 15 6 Things to Do after Replacing ...

Page 3: ... prevent the customer from being exposed to shock hazards 1 1 For Service Technicians ICs and LSIs are vulnerable to static electricity When repairing the following precautions will help prevent recurring malfunctions 1 Cover the plastic part s boxes with aluminum foil 2 Ground the soldering irons 3 Use a conductive mat on the worktable 4 Do not touch the IC or LSI pins with bare fingers 1 2 AC Ca...

Page 4: ... which are rotated by the document feed motor A gear rotates the two rollers Be careful not to touch them with your hands especially when the unit is operating 1 3 2 Live Electrical Sections All the electrical sections of the unit supplied with AC power by the AC power cord are live Never disassemble the unit for service with the AC power supply plugged in CAUTION AC voltage is supplied to the pri...

Page 5: ...es accumulate on a person For instance clothes rubbing together can damage electric elements or change their electrical characteristics In order to prevent static electricity touch a metallic part that is grounded to release the static electricity Never touch the electrical sections such as the power supply unit etc ...

Page 6: ... care while using higher temperature soldering irons Do not heat the PCB for too long time in order to prevent solder splash or damage to the PCB PbF solder will tend to splash if it is heated much higher than its melting point approximately 1100 F 600 C When applying PbF solder to double layered boards please check the component side for excess which may flow onto the opposite side See figure bel...

Page 7: ...art screw heads control shafts bottom frame etc Note Some exposed parts may be isolated from the chassis by design These will read infinity 4 If the measurement is outside the specified limits there is a possibility of a shock hazard 2 3 Battery Caution 1 Danger of explosion if battery is incorrectly replaced 2 Replace only with the same or equivalent type recommended by the manufacturer 3 Dispose...

Page 8: ...prox 12 s page ECM MMR 2 Scanning Density Horizontal 8 pels mm Vertical 3 85 lines mm in standard resolution 7 7 lines mm in fine photo resolution 15 4 lines mm in super fine resolution Photo Resolution 64 levels Scanner Type Contact Image Sensor Printer Type Thermal Transfer on Plain Paper Data Compression System Modified Huffman MH Modified READ MR Modified Modified READ MMR Modem Speed 9 600 7 ...

Page 9: ...aussian Frequency Shift Keying RF Transmission Power Approx 250 mW Voice Coding ADPCM 32 kbit s Operating Environment 5 C 40 C 20 80 RH Relative Humidity Operation Range Up to 300 m outdoors Up to 50 m indoors Dimensions Approx height 155 mm width 48 mm depth 34 mm Mass Weight Approx 140 g Operating Environment 5 C 40 C 20 80 RH Relative Humidity Dimensions Approx height 61 mm width 87 mm depth 95...

Page 10: ...ems The cordless handset provide a phonebook 200 items Caller ID The calling party s name or telephone number will be dis played after the 1st ring You have the option of whether or not to answer the call The unit will automatically store caller information name telephone number date and time of the call from the 50 most recent callers It is possible to view caller information one at a time on the...

Page 11: ... GND 05V KSTART KLATCH KRXD KTXD KSCLOCK RESET 6 5 4 3 2 1 6 5 4 3 2 1 HSMIC HSMIC GND HOOK HSSP HSSP Hook Switch Board 4 3 2 1 HSMI C HSSP HSSP HSMI C MIC 2 1 CN5 CN4 CN14 CN203 CN918 MIC MICAG Sensor Board 2 1 GND FILMEND 24V DG 05V BELL LINERLY LINETX LINE_P PSHORT CP C MONRX BBRX MDMRX CLIPRLY HSALC DCN BREAK LINE_M SP SP COVEROPEN PTOP REED CN206 CN19 CN18 CN103 CN104 CN101 CN102 OPTION TO TE...

Page 12: ...l Head Contains heat emitting elements for dot matrix image printing 8 BBIC Base Band IC IC4 Handling all the audio signal and data processing needed in a DECT base unit Controlling the DECT specific physical layer and radio section Burst Module Controller section ADPCM codec filter for speech encoding and speech decoding DSP section Echo cancellation and Echo suppression DSP section Any tones ton...

Page 13: ...Panel Board Relay T101 Digital Board Analog Board 24V 6V MODEM BOA 9600bps IC3 SERIAL TONE AUTO ANSWER 2 5V SP AMP IC2 DTOP Flash Memory 4Mbit IC16 RF IC28 REG REG 6V 5V ANT 10 368MHz Dual Flash Memory 16Mbit IC23 EEPROM 128K IC22 Charger REG 4V 4V I F Board 4V 6V 4V 24V Motor Position AC 3 3V REG 4V 3 3V FET Q401 Film End Tr MIC 5V REG 5V Speaker T102 PTOP REED COVER OPEN Handset BBIC IC4 Hook 5V...

Page 14: ...AD I F Transmits the recorded data to the thermal head 8 MOTOR I F Controls the transmission motor which feeds the docu ment Controls the receiving motor which feeds the recording paper 9 OPERATION PANEL I F Serial interface with Operation Panel 10 I O PORT I O Port Interface Note This memory is incorporated into the ASIC IC10 and used for the image processing Fig A shows the memory map of the Ima...

Page 15: ...power interruption a positive reset pulse of 60 msec is generated and the system is reset completely 2 The watch dog timer built in the ASIC IC10 is initialized by the CPU about every 1 5 ms When a watch dog error occurs pin 115 of the ASIC IC10 becomes low level The terminal of the WDERR signal is connected to the reset line so the WDERR signal works as the reset signal ...

Page 16: ... A In point C according to the voltage output time the thermal head s temperature is detected After the thermal head temperature is converted to voltage in B it is then changed to digital data in the A D converter inside IC10 The CPU decides the strobe width of the thermal head according to this value Therefore this circuit can keep the ther mal head at an even temperature in order to stabilize th...

Page 17: ...outes4 and 5 they are stored in RAM 4 The white black data stored as above via routes6 and8 is input to the P S converter The white black data converted to serial data in the P S converter is input to the Thermal Head via route9 and is printed out on recording paper Note Standard Reads 3 85 lines mm Fine Photo Reads 7 7 lines mm Super Fine Reads 15 4 lines mm Transmission 1 Same processing as Copy...

Page 18: ...18 KX FC255CX S 6 4 2 Block Diagram ...

Page 19: ...ICs The shift registers of the 9 ICs are connected in series and upon the shift of the 1728 dot increment the shift register becomes filled with data and a latch pulse is emitted to each IC from IC10 pin 118 THLAT With this latch pulse all the contents of the shift registers are latched to the latch registers Thereafter through the addition of strobes from the IC10 pins 103 104 only the dot locati...

Page 20: ...20 KX FC255CX S ...

Page 21: ...4 of IC10 goes to a high level and the transistor Q21 turns on This applies voltage to the LED array to light it The contact image sensor is driven by each of the FTG F1 signals output from IC10 and the original image illuminated by the LED array undergoes photoelectric conversion to output an analog image signal SIG The analog image signal is input to the system ASIC on AIN1 pin 3 of IC10 and con...

Page 22: ...C401 pins 11 14 to drive the Motor Coil The motor coil is energized sequentially in 2 phase increments which causes a 1 step rotation A 1 step rotation feeds 0 13 mm of recording paper The timing chart is below Stepping Motor Drive Mode Function Mode Phase Pattern Speed Copy Fine Photo 1 2 432 pps t 1 432 Super Fine 1 2 216 pps t 1 216 FAX Sending Standard 2 2 432 pps t 1 432 Fine Photo 1 2 432 pp...

Page 23: ... pin 124 of ASIC IC10 becomes a low level and Q403 turns OFF Then Q402 also turns OFF and instead of 24 V 6 V is supplied through D401 so that the motor is held in place When the system is in the stand by mode all of the motor drive transistors turn OFF Consequently the motor current stops ...

Page 24: ...ame Error Message Operation Panel SW351 Document top sensor REMOVE DOCUMENT SW352 Document set sensor CHECK DOCUMENT Sensor P C Board SW1001 Cover Open sensor Paper Top sensor CHECK COVER PAPER JAMMED SW1002 Film Detection sensor FILM EMPTY Film End Sensor P C Board SW1003 Film End sensor CHECK FILM Gear Block SW1004 Motor Position sensor CALL SERVICE2 Hook Switch P C Board SW1501 Hook switch ...

Page 25: ...301 6 pin Operation Board becomes a high level 6 5 2 Document Set Sensor SW352 When a document is set the SW turns ON and the input signal of IC301 9 pin Operation Board becomes a low level When there is no document the SW turns ON and the input signal of IC301 9 pin Operation Board becomes a high level SW Signal IC301 6 pin Out of the Read Position OFF High level At the Read Position ON Low level...

Page 26: ...oard becomes a high level 6 5 4 Cover Open Sensor SW1001 When the u TURN BLOCK is closed the SW becomes ON and the input signal of IC10 45 pin Digital Board becomes a low level When the cover is opened the SW becomes OFF and the input signal of IC10 45 Digital Board pin becomes a high level SW Signal IC10 43 pin Set recording paper or paper cover is opened ON Low level No recording paper or paper ...

Page 27: ...level 6 5 6 Motor Position Sensor SW1004 When the recording paper is loaded on the print head the SW turns ON and the input signal of IC10 119 pin Digital Board becomes a low level When the recording paper is not loaded on the print head the SW turns OFF and the input signal of IC10 119 pin Digital Board becomes a high level SW Signal IC10 39 pin Cover open or no film OFF High level Cover closed a...

Page 28: ...he handset is lifted the switch turns ON and the signal at pin 19 of IC10 becomes low When the handset is returned the switch turns OFF and the signal at pin 19 of IC10 becomes high SW Signal ON Hook OFF High level IC10 19 pin OFF Hook ON Low level ...

Page 29: ... one of the four permanent organizations of the International Telecommunications Union ITU investigates and make recommendations on international standards for facsimiles 2 Definition of Each Group Group I G1 Official A 4 size documents without using formats which reduce the band width of a signal are sent over telephone lines Deter mined in 1968 Transmission for about 6 minutes at a scanning line...

Page 30: ...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 transmission mode is established and transmission and reception are synchronized Image transmission time This is the time required for the transmission of document contents image data In general this time is recorded in the catal...

Page 31: ...ata signals are added to DIS and DCS signals Signal DIS Digital Identification Signal Identification Signal Format 00000001 Function Notifies the capacity of the receiving unit The added data signals are as follows Signal DCS Digital Command Signal Identification Signal Format X1000001 Example Some models do not support the following items Bit No DIS DTC DCS 1 Transmitter T 2 operation 2 Receiver ...

Page 32: ...d B4 364 mm Invalid Maximum recording length A4 297 mm Unlimited B4 364 mm Invalid 21 22 23 0 0 0 0 0 1 0 1 0 1 0 0 0 1 1 1 1 0 1 0 1 1 1 1 Minimum scan line time capability of the receiver 20 ms at 3 85 l mm T7 7 T3 85 40 ms at 3 85 l mm T7 7 T3 85 10 ms at 3 85 l mm T7 7 T3 85 5 ms at 3 85 l mm T7 7 T3 85 10 ms at 3 85 l mm T7 7 1 2 T3 85 20 ms at 3 85 l mm T7 7 1 2 T3 85 40 ms at 3 85 l mm T7 7...

Page 33: ...omatic equalizer etc according to this signal TCF Training Check Sends 0 continuously for 1 5 seconds at the same speed as the training signal CFR Confirmation to Receive X0100001 Notifies the sending side that TCF has been properly received If TCF is not properly received FTT Failure To Train X0100010 is relayed to the sender The sender then reduces the transmission speed by one stage and initiat...

Page 34: ...34 KX FC255CX S b Redundancy Compression Process Coding Mode This unit uses one dimensional MH format ...

Page 35: ...operates using the 32 256 MHz clock X1 1 Facsimile Transmission The digital image data on the data bus is modulated in the modem IC3 and sent from pin 56 via amplifier IC102 and the NCU section to the telephone line Refer to Check Sheet for Signal Route P 123 2 Facsimile Reception The analog image data which is received from the telephone line passes through the NCU section and enters pin 47 of th...

Page 36: ...in 83 of IC4 through the Q101 PC102 is controlled by pin 12 of IC4 through the Q104 ON HOOK IC4 83 Low Level Q101 OFF RL101 OFF IC4 12 Low Level Q104 OFF PC102 OFF OFF HOOK IC4 83 High Level Q101 ON RL101 ON IC4 12 High Level Q104 ON PC102 ON 6 7 4 Pulse Dial Circuit The pulse dial is generated by operating the transistor PC102 while OFF HOOK RL101 ON condition Make state IC4 12 High Level Q104 ON...

Page 37: ...is modulated in an FSK Frequency Shift Keying format Data 0 is a 1200 Hz sine wave and data 1 a 2200 Hz sine wave There are two type of the message format which can be received i e the single data message format and multiple data mes sage format The multiple data format allows to transmit the name and data code information in addition to the time and telephone number data When there is multiple da...

Page 38: ...outgoing and incoming signals This switching function is contained in IC4 and consists of voice detector TX attenuator RX attenuator comparator and attenuator control The function analyzes whether the TX Transmit or the RX receiver signal is louder and then it processed the signal such that the louder signal is given precedence The vice detector provides the attenuator control corresponding to the...

Page 39: ...g to a time slot and channel etc In IC28 the carrier frequency is changing and frequency modulated RF signal is generated and amplified and radiated from antenna Cordless Handset detects the voice signal or data signal in the circuit same as the following explanation of Receiver Block 6 9 2 Receiver Block The signal of 19 2 MHz band 18 81792 MHz 18 97344 MHz which is input from antenna is input to...

Page 40: ...y are controlled by the Gate Array IC301 and ASIC IC10 on the DIGITAL BOARD The key matrix table is shown below CN301 CN206 IC10 ASIC LCD MODULE GATE ARRAY IC301 CN302 DOCUMENT TOP SENSOR DOCUMENT SET SENSOR AUTO ANSWER 8x5 KEYS MATRIX DIGITAL BOARD OPERATION BOARD XLED9 10 LED2 KIN0 7 KSL0 4 KX FC255CX S OPERATION BOARD BLOCK DIAGRAM ...

Page 41: ...rystal drive R310 R311 and R312 are density control resistors Consequently in this unit the timing positive clock is generated by the LCD interface circuitry in the gate array IC301 DIsplay mode Density Normal Dark 2 lines X1 0 LED1 IC301 22pin H L XL14 IC301 20pin Hi Z L XL15 IC301 21pin L L 1 line X1 5 LED1 H H XL14 Hi Z Hi Z XL15 Hi Z L ...

Page 42: ...and charges C106 to make DC voltage Then it supplies power to the converter circuit Kick on voltage circuit Bias is applied to the Q101 gate via this circuit when the AC power is turned on and Q101 begins operating A B Voltage Wave Form C D Voltage Wave Form E F G H Voltage Wave Form 0 0 0 Input Circuit AC Input Surge Absorber Circuit G H 4V 24V E IC101 D110 R104 F 9 6V GND Control Circuit Kick on...

Page 43: ...ansfer as follows L D1 Load L Then the power is supplied to the Load When Q1 is ON power is not output from the secondary side The output voltage is fed back in the control IC according to the error amp rectifier Then depending on how TON is controlled stabilization occurs Also when the current load becomes too large in order to decrease the voltage output the increase in is controlled and the out...

Page 44: ...en the output voltage of the 24V circuit increases the current of the photo coupler PC101 increases the pulse width of the output control IC becomes narrower and the ON period of Q101 becomes shorter Over Current Limiter O C L The highest drain current Q101 is limited by a limiter circuit IC101 of 24V The 24V output is limited by this circuit Over Voltage Circuit If the 24V output increases becaus...

Page 45: ...V LCD CD RESET CSB SDA SCL CPU Analog Front End D A A D 30 32 66 67 72 62 52 45 44 58 56 59 60 6 47 46 77 ADPCM Codec Filter DSP Speech Decoding Speech Encoding BMC Burst Decoding Burst Encoding RF Interface RF Module IC4 23 22 RXDA TXDA 19 26 25 24 RSSI SYDA SYEN SYCL 16 17 XTAL X1 10 368 MHz BATTERY 61 ON SWITCH KEYPAD ROWS COLUMNS 1 12 40 76 27 28 34 35 36 74 BBIC IC1 IC3 11 LCD BACK LIGHT KEY ...

Page 46: ... Operation When charging the handset on the Base Unit the charge current is as follows DC 6 5V R55 R56 CHARGE Base CHARGE Handset L4 Q4 D7 F1 BATTERY Battery BATTERY R45 GND CHARGE Handset CHARGE Base GND DC GND In this way the BBIC on Handset detects the fact that the battery is charged The charge current is controlled by switching Q5 of Handset 6 13 2 4 Battery Low Power Down Detector Circuit Op...

Page 47: ...uide 4 Paper support 5 Recording paper exit 6 Recording paper entrance 7 Antenna 8 Microphone 9 Front cover 10 Document entrance 11 Document exit 12 Speaker 13 Green button Back cover release button 14 Back cover 7 1 2 Cordless Handset 1 Charge indicator Ringer indicator Message indicator 2 Receiver 3 Microphone 4 Headset socket 5 Speaker ...

Page 48: ...ting during programming 17 TONE To change from pulse to tone temporarily during dialling when your line has rotary pulse service You can also use tone dial service by changing feature 13 on Program Mode Table P 98 18 MUTE To mute your voice during a conversation Press again to resume the conversation 19 SP PHONE For speakerphone operation 20 FAX START To send or receive a fax 21 COPY To copy a doc...

Page 49: ...ft key reveals the cordless handset s main menu From here you can access various features and settings Soft Keys The cordless handset features 3 soft keys By pressing a soft key you can select the feature or operation indicated by the soft key icon shown directly above it Soft Key Icons Symbols used in these operating instructions ...

Page 50: ...tect the unit from damage hold both sides when you move it 8 2 Connections Important The unit will not function when there is a power failure To make calls in emergency situations you should con nect a telephone that can function during a power fail ure to the telephone line 8 2 1 Base Unit Telephone line cord Connect to a single telephone line jack Power cord Connect to a power outlet 220 V 240 V...

Page 51: ...ghts up when the cordless hand set is placed on the charger Note To ensure the battery charges properly clean the charge contacts of the cordless handset and the charger with a soft dry cloth once a month Clean more often if the unit is subject to grease dust or high humidity Battery strength Panasonic Ni MH battery performance included batteries Note It is normal for batteries not to reach full c...

Page 52: ... ink film roll into the front left slot of the unit and the white gear of the ink film roll into the rear left slot of the unit The ink film is safe to touch and will not rub off on your hands like carbon paper Make sure the blue gear and white gear are installed as shown 5 Turn the blue gear in the direction of the arrow until the ink film is tight and at least one layer of ink film is wrapped ar...

Page 53: ...shing down on the dotted area at both ends 7 Close the front cover securely 8 5 Installing the Paper Tray Pull up the metal recording paper guide then install the paper tray Make sure the arrows on the paper tray and the unit match If the paper support is folded unfold it ...

Page 54: ...xing a multiple sheet 60 g m2 to 80 g m2 Note Remove chips staples or other fasteners Do not send the following types of documents Make a copy of the document and send the copy Chemically treated paper such as carbon or carbonless duplicating paper Electrostatically charged paper Badly curled creased or torn paper Paper with a coated surface Paper with a faint image Paper with printing on the oppo...

Page 55: ... and slide the cover When replacing batteries remove the old batteries posi tive terminal first 2 Insert the batteries negative terminal first Close the cordless handset cover 9 Operation Instructions 9 1 Setting Your Logo You can program your logo name company name etc so that it appears on the top of each page sent 1 MENU 0 2 SET 2 Enter your logo up to 30 characters See the Operation Instructio...

Page 56: ...56 KX FC255CX S 9 2 Cordless Handset Programming 9 2 1 Cordless Handset Features ...

Page 57: ...57 KX FC255CX S Note Refer to Program Mode Table P 98 ...

Page 58: ...Service Mode 5 5 8 Checks the LCD indication except STOP key Illuminates all the dots to check if they are normal SET KEY CHECK Service Mode 5 6 1 Checks the button operation Indicates the button code on the LCD while the button is pressed Refer to But ton Code Table P 59 SET any key MEMORY CLEAR except History data Service Mode 7 1 0 Refer to Memory Clear Specification P 64 SET VOICE PROMPT CHECK...

Page 59: ...GREETING RECORD 31 1 STOP 14 MEMO 32 2 04 FAX START 15 GREETING CHECK 33 3 06 COPY 16 ERASE 34 4 08 SP PHONE 18 PLAY BACK 35 5 09 LOCATOR INTERCOM 36 6 0A MUTE 37 7 0C AUTO ANSWER 20 MENU 38 8 0D SET 22 PRINT REPORT 39 9 25 VOLUME 3A 0 26 VOLUME 3B 1E 3C 1F 3D REDIAL PAUSE 3E R FLASH 47 CALLER ID ...

Page 60: ...60 KX FC255CX S 10 1 2 Print Test Pattern 1 Platen roller 2 Left margin Top margin 3 Thermal head 1 dot 4 Use this test pattern to confirm the torque limiter for Ink film and platen roller timing ...

Page 61: ...ams The normal programs are those listed in the Operating Instructions and are available to the user The special programs are only those listed here and not displayed to the user In both the User and Ser vice Modes there are Set Functions and Test Functions The Set Functions are used to program various features and functions and the Test Functions are used to test the various functions The Set Fun...

Page 62: ...ion is in correct adjust the feed position 550 Memory clear See Memory Clear Specification P 64 551 Flash memory check See Test Mode P 58 553 Monitor on FAX communication select 1 OFF 2 PHASE B 3 ALL 1 3 1 Sets whether to monitor the line signal with the unit s speaker during FAX communication or not 554 Modem test See Test Mode P 58 555 Scan check See Test Mode P 58 556 Motor test See Test Mode P...

Page 63: ...lection 1 9600BPS 2 7200BPS 3 4800BPS 4 2400BPS 1 4 1 Adjusts the speed to start training during FAX transmis sion Refer to Sometime There is a Transmit Problem P 90 and The unit can copy but the transmission and reception image are incorrect P 95 718 Receive speed selection 1 9600BPS 2 7200BPS 3 4800BPS 4 2400BPS 1 4 1 Adjusts the speed to start training during FAX recep tion Refer to Receive Pro...

Page 64: ...n 1 Execute Service Mode 550 when you want to reset the all setting data keeping the user information 2 Execute Service Mode 710 to clear the user information in case that Main Unit is recycled Note Please restart a power supply after clearing a memory ...

Page 65: ...65 KX FC255CX S 11 2 Handset ...

Page 66: ...emarks Sending level 00 06 Adjusted value Given value 6F 00 3 Receiving level 00 07 Adjusted value Given value 00 3F 4 Battery Low 00 04 25 5 Frequency 00 01 75 ID 00 10 00 14 Given value Desired Number hex Input Keys Desired Number hex Input Keys 0 0 A R 0 1 1 B R 1 C R 2 D R 3 E R 4 9 9 F R 5 Items Description Sending level Analog Front End MIC Setting for Handset Mode Receiving level Analog Fro...

Page 67: ...67 KX FC255CX S 11 3 The Example of the Printed List 11 3 1 User Mode Note The above values are the default values ...

Page 68: ...68 KX FC255CX S 11 3 2 Service Mode Settings Note The above values are the default values ...

Page 69: ...69 KX FC255CX S 11 3 3 History Note See the following descriptions of this report Item No 1 44 are corresponding to the listed items in Descriptions of the History Report P 70 ...

Page 70: ...ECEIVE REDUCTION The compression rate when receiving 20 SETTING NO OF DIRECTORY The recorded directory stations 21 NUMBER OF COPY The number of pages copied 22 NUMBER OF RECEIVE The number of pages received 23 NUMBER OF SENDING The number of pages sent 24 NUMBER OF CALLER ID The number of times Caller ID was received 25 NUMBER OF RECORDING MESSAGE The number of messages recorded in TAM 26 29 Not U...

Page 71: ...paper thickness lever is set correctly and the paper is set correctly without any slack 2 Before troubleshooting first check that the connectors and cables are connected correctly not loose If the problem occurs randomly check it very carefully 3 When connecting the AC power cord with the unit case and checking the operation exercise utmost care when handling elec tric parts in order to avoid elec...

Page 72: ...g the Ink film P 52 The recording paper is not installed or the unit has run out of paper Install paper and SET to clear the message The recording paper was not fed into the unit properly Refer to When the recording paper was not fed into the unit properly P 194 Reinstall paper and press SET to clear the message Refer to Installing the Recording Paper P 54 The recording paper has jammed near the r...

Page 73: ...he fax machine is positioned near appliances such as TVs or speakers which generate an intense magnetic field A recording paper jam occurred Remove the jammed paper Refer to Recording Paper Jams P 193 You forced the recording paper into the paper tray too strongly Remove all of the installed paper and re install it gently The unit is checking that there is no slack or crease in the ink film Wait f...

Page 74: ...again You tried to send an SMS message to a phone number saved in the base unit phonebook cordless handset phonebook Caller ID list or redial list that is over 20 digits long The cordless handset s phonebook memory is full Erase unnecessary items There is no room left in memory to record voice messages Erase unnecessary messages Erase unnecessary messages You must subscribe to Caller ID service On...

Page 75: ...2400BPS training signal 3 43 COMMUNICATION ERROR SND No response after post message is transmitted three times 4 44 COMMUNICATION ERROR SND RTN and PIN are received 5 46 COMMUNICATION ERROR RCV No response after FTT is transmitted 6 48 COMMUNICATION ERROR RCV No post message 7 49 COMMUNICATION ERROR RCV RTN is transmitted 8 50 COMMUNICATION ERROR RCV PIN is transmitted to PRI Q 8 51 COMMUNICATION ...

Page 76: ...76 KX FC255CX S Countermeasure ...

Page 77: ...77 KX FC255CX S REFERENCE Test Mode P 58 ...

Page 78: ...78 KX FC255CX S REFERENCE Test Mode P 58 ...

Page 79: ...79 KX FC255CX S REFERENCE Test Mode P 58 ...

Page 80: ...80 KX FC255CX S REFERENCE Test Mode P 58 ...

Page 81: ...81 KX FC255CX S ...

Page 82: ...82 KX FC255CX S REFERENCE Test Mode P 58 ...

Page 83: ...83 KX FC255CX S REFERENCE Test Mode P 58 ...

Page 84: ... you basic information about a communication but the other two journal reports provide different informa tion on the same item communication HOW TO READ JOURNAL REPORTS Example 1 Look at NO 01 in the JOURNAL If you want to know about the details about that item see NO 01 in the JOURNAL 2 and the JOURNAL 3 You can get the following information MODE Fax transmission RCV MODE TEL TX SPEED 9 6 kbps RE...

Page 85: ...in Printout Example P 86 it shows the fax message was received in memory due to PAPER OUT error NO RESPONSE DISAPPEARED ON JOURNAL The NO RESPONSE DISAPPEARED ON JOURNAL displays the information about the last 10 communications terminated by No Response Some of the communications terminated by No Response were not displayed in the JOURNAL When a fax transmission cannot be performed because the oth...

Page 86: ...Scan Line Time Used only at the factory 8 EQM EQM means Eye Quality Monitor Used only at the factory 9 ERROR LINE RX When an error occurs while receiving a fax this shows the number of error lines 10 MAKER CODE This shows a 2 digit code of the other party s fax machine brand 0E KX model 00 Unknown 79 UF model 19 Xerox model 12 3 2 3 Printout Example ...

Page 87: ...87 KX FC255CX S ...

Page 88: ...it can copy documents Receive Problem P 91 Problem with the service line or with the transmitter s fax 4 The fax completely fails to transmit or receive The unit can copy documents The Unit can copy but cannot Transmit Receive P 92 Problem with the electric circuit 5 The fax fails either to transmit or receive when mak ing a long distance or an international call The unit can copy documents The un...

Page 89: ...ion 12 3 3 1 1 Transmit Problem REFERENCE 1 Operation Panel Section P 128 2 ADF Auto Document Feed Section P 103 3 Maintenace P 184 4 How to Remove the Gear Block and Separation Roller P 151 5 How to Remove the Operation Board MIC Board and LCD P 160 ...

Page 90: ...90 KX FC255CX S 12 3 3 1 2 Sometime There is a Transmit Problem Note 596 Transmit level set represents a service code Refer to Service Function Table P 62 ...

Page 91: ...the software related problems such as OUT OF PAPER when the fax switches to the memory receiving mode and the memory capacity becomes full of the unprintable data In this case error mes sages MEMORY FULL and its main cause for example CHECK PAPER are displayed on the LCD Once you solve the main problem MEMORY FULL will be cancelled and the reception problem will be resolved LCD display messages in...

Page 92: ...92 KX FC255CX S 12 3 3 1 4 The Unit can copy but cannot Transmit Receive REFERENCE 1 Test Mode P 58 2 Analog Board Section P 123 ...

Page 93: ...should be called manually if possible Another possibility is entering two pauses at the end of the auto dial number on the transmission side Then the count start time can be delayed for 2 pauses about 10 sec Cause 2 Erroneous detection because of an echo or an echo canceler Echo Echo Canceler The signal from FAX1 reaches FAX2 via stations 1 and 2 but the reflection signal at station 2 also returns...

Page 94: ...ge the regular rime of 75 msec between the CED signal and DIS signal to 500 msec This will give at least 250 msec to recover the echo canceler operation Refer to Fig c Service code 593 Time between CED and 300 bps Sending side The sending side FAX sends a DCS signal not after receiving the 1st DIS signal but after receiving the 2nd DIS signal Refer to Fig d Service code 594 Overseas DIS detection ...

Page 95: ...e other FAX unit and the line conditions The countermeasures for this unit are shown below Transmission Operation Set the transmitting speed to 4800BPS service mode code No 717 or select the overseas mode Reception Operation If 80 or more of the reception is incorrect set the receiving speed to 4800BPS Service mode code No 718 Refer to Service Function Table P 62 TX side signal RX side signal Coun...

Page 96: ...control setting Refer to the PC instruction book 2 Start up the PC software SOUND RECORDER This software is bundled to Windows OS which can create WAV file Set the audio format PCM 22 050kHz 8bit mono 3 Click the record button and start recording after acquisition the signal Note Not to be wind wave patterns on the wave monitor Please compress the recording data when you send attaching to E Mail b...

Page 97: ...omer s fax machine Based on this the parameters for the desired codes can be changed The procedure for changing and listing parameters is described on Entering the Remote Programming Mode and Changing Service Codes P 97 Also before exiting the remote programming mode it is advisable to obtain a new list to confirm that the changes were made correctly Hint Since the connected telephone is in use du...

Page 98: ...al OK 059 Copy phonebook 1 ITEM ALL ITEMS 1 ITEM NG 067 Call screening 1 ON 2 OFF ON OK 068 ECM selection 1 ON 2 OFF ON OK 072 Set flash mode 0 80ms 1 90ms 2 100ms 3 110ms 4 160ms 5 200ms 6 250ms 7 300ms 8 400ms 9 600ms 700ms 900ms 600ms OK 073 Manual answer mode 1 TEL 2 TEL FAX TEL OK 076 Connecting tone 1 ON 2 OFF ON OK 077 Auto answer mode 2 FAX Only 3 TAM FAX TAM FAX OK 078 TEL FAX delayed rin...

Page 99: ... 256 byte 2 64 byte 256 byte OK 710 Memory clear except history data NG 717 Transmit speed select 1 9600 2 7200 3 4800 4 2400 9600bps OK 718 Receive speed select 1 9600 2 7200 3 4800 4 2400 9600bps OK 722 Redial tone detect 1 ON 2 OFF ON OK 745 Power on film feed 1 ON 2 OFF ON OK 763 CNG detect time for friendly reception 1 10s 2 20s 3 30s 30s OK 773 DIS DCS interval 1 500msec 2 200msec 200ms OK 7...

Page 100: ...use different expressions for the same problem as they are not a technician or engineer Using your experience test the problem area corresponding to the claim Also returns from a customer or dealer often have a claim tag For these cases as well you need to determine the problem Test the unit using the simple check list on Simple Check List P 102 Diffi cult problems may be hard to determine so repe...

Page 101: ...rtical Line P 113 Black or white lateral line on print out See Black or White Lateral Line on Print Out P 114 An abnormal image is printed See An Abnormal Image is Printed P 115 Communication FAX TEL Analog board Cannot communicate by fax An error code is displayed See Communication Section P 88 and Journal Report P 75 Cannot talk The DTMF tone doesn t work The handset monitor doesn t work etc See...

Page 102: ...efer to Test Mode P 58 LED check OK NG Service code 557 Refer to Test Mode P 58 LCD check OK NG Service code 558 Refer to Test Mode P 58 Sensor Sensor check OK NG Service code 815 Refer to Test Mode P 58 Clock Display changing OK NG Is the time kept correctly Check with another clock Digital TAM Greeting REC PLAY OK NG Incoming message REC PLAY OK NG Memo REC PLAY OK NG Voice prompt OK NG Service ...

Page 103: ...older and Exit Roller P 161 2 Installation Position of the Lead Wires P 162 3 How to Remove the Gear Block and Separation Roller P 151 4 Test Mode P 58 5 How to Remove the Gears Motors and Arms of the Gear Block P 152 6 Thermal Head P 19 7 Digital Board Section P 116 8 Sensor Section P 129 9 Power Supply Board Section P 125 ...

Page 104: ...104 KX FC255CX S 12 5 4 2 Document Jam REFERENCE 1 Disassembly and Assembly Instructions P 141 2 Test Mode P 58 3 How to Remove the Separation Holder and Exit Roller P 161 4 Sensor Section P 129 ...

Page 105: ...ing Paper P 54 2 How to Remove the Gear Block and Separation Roller P 151 3 Disassembly and Assembly Instructions P 141 4 How to Remove the Separation Holder and Exit Roller P 161 5 Maintenace P 184 Note When confirming if the characters are extended or distorted or if the feed problem is occurred use this test chart format Refer to Test Chart P 204 ...

Page 106: ...FERENCE 1 Maintenance Check Items Component Locations P 184 2 Disassembly and Assembly Instructions P 141 3 How to Remove the Image Sensor CIS P 145 4 Overview P 47 5 We recommend making a copy of the test chart in Test Chart P 204 and using it ...

Page 107: ... Antenna P 158 3 Power Supply Board Section P 125 4 Test Mode P 58 5 How to Remove the P C Boards and Speaker P 149 6 How to Remove the Gears Motors and Arms of the Gear Block P 152 7 How to Remove the Platen Roller and Lock Lever P 156 8 Digital Board Section P 116 9 We recommend making a copy of the test chart in Test Chart P 204 and using it ...

Page 108: ... Paper Jam REFERENCE 1 Jams P 193 2 Maintenance Check Items Component Locations P 184 3 Disassembly and Assembly Instructions P 141 4 Test Mode P 58 5 Sensor and Switches P 24 6 How to Remove the Pickup Roller and Antenna P 158 ...

Page 109: ...kup Roller and Antenna P 158 12 5 4 8 The Sent Fax Data is Skewed REFERENCE 1 We recommend making a copy of the test chart in Test Chart P 204 and using it 2 Document Skew P 106 12 5 4 9 The Received Fax Data is Skewed REFERENCE 1 We recommend making a copy of the test chart in Test Chart P 204 and using it 2 Recording Paper Multiple Feed and Skew P 109 ...

Page 110: ...REFERENCE 1 Document feeder recording paper feeder scanner glass cleaning P 195 2 Disassembly and Assembly Instructions P 141 3 How to Remove the Separation Holder and Exit Roller P 161 4 We recommend making a copy of the test chart in Test Chart P 204 and using it ...

Page 111: ... 11 A Blank Page is Copied REFERENCE 1 Test Mode P 58 2 Thermal Head P 19 3 How to Remove the Thermal Head P 146 4 We recommend making a copy of the test chart in Test Chart P 204 and using it 5 A Blank Page is Received P 113 ...

Page 112: ...112 KX FC255CX S ...

Page 113: ...s Copied P 111 12 5 4 13 Black or White Vertical Line REFERENCE 1 We recommend making a copy of the test chart in Test Chart P 204 and using it 2 Maintenance Check Items Component Locations P 184 3 Document feeder recording paper feeder scanner glass cleaning P 195 4 Thermal Head Cleaning P 196 5 How to Remove the Thermal Head P 146 ...

Page 114: ...How to Remove the Gears Motors and Arms of the Gear Block P 152 3 Installation Position of the Lead Wires P 162 4 Disassembly and Assembly Instructions P 141 5 We recommend making a copy of the test chart in Test Chart P 204 and using it 6 A Blank Page is Copied P 111 7 Digital Board Section P 116 ...

Page 115: ...2 5 4 15 An Abnormal Image is Printed REFERENCE 1 Test Mode P 58 2 Check Sheet for Signal Route P 123 3 How to Remove the Thermal Head P 146 4 We recommend making a copy of the test chart in Test Chart P 204 and using it ...

Page 116: ...ASH ROM malfunctions are extremely rare after installation in the product This may be repaired by replacing the IC DRAM etc However the real cause may not have been an IC malfunction but a sol dering fault instead Soldering faults difficult to detect with the naked eye are common particularly for ASIC and RA Resistor Array But if you have an oscilloscope you can easily determine the problem site o...

Page 117: ...em Those signal lines should remain normal Other signal lines are not directly related to that failure even if they have faults or troubles As long as these signals remain normal once the power is turned on each IC can repeatedly output 3 3V H and 0V L The following shows NG and normal wave patterns NG Wave pattern Note Refer to NG Example P 122 ...

Page 118: ... slightly delayed the circuit will not work Nor will it if the IC is defective and the output voltage level is not normal although the timing of these signals is accurate enough to meet the specifications Make sure that your oscilloscope is calibrated before starting a test Therefore it is imperative to confirm whether each IC outputs the signal at the correct level See the I O Pin No Diagram The ...

Page 119: ...119 KX FC255CX S I O and Pin No Diagram ...

Page 120: ...n the ASIC initializes and checks each IC The ROM DRAM 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 REFERENCE NG Example P 122 Power Supply Board Section P 125 ...

Page 121: ...121 KX FC255CX S Other NG example while the power is ON and the LCD displays the following ...

Page 122: ...122 KX FC255CX S 12 5 5 2 NG Example ...

Page 123: ...t microphone and the signal is output to the telephone line The signal mainly flowing on this route is analog You can trace the signal with an oscilloscope The signal flow on each route is shown in the Check Sheet here If you find a specific problem in the unit for example if you cannot communicate with the H S trace that signal route locally with the following Check Sheet and locate the faulty po...

Page 124: ... on each route between the microphone and the telephone line sending or between the telephone line and the speaker receiving Check the compo nents at that point Check Sheet for Signal Route P 123 is useful for this investigation 2 No pulse dialing 3 No ring tone or No bell REFERENCE Check Sheet for Signal Route P 123 NCU Section P 36 4 No tone dialing REFERENCE Check Sheet for Signal Route P 123 ...

Page 125: ...urge voltage test withstanding voltage test intentional short circuit test etc Caution If you find a melted fuse in the unit do not turn on the power until you locate and repair the faulty parts except for the fuse otherwise the fuse will melt again and you cannot pinpoint the faulty point In most cases the symptom is that nothing is output It is more likely that the fault is in the primary side r...

Page 126: ...126 KX FC255CX S 12 5 7 2 Troubleshooting Flow Chart ...

Page 127: ...F101 Q101 The worst case of Q101 is a short circuit between the Drain and Gate because damage expands to the peripheral circuit of Q101 This is due to a very high voltage through the Gate circuit which is composed of R110 R112 D107 and IC101 You should change all of the parts listed as follows F101 Q101 R110 R112 D107 IC101 D201 If D201 is broken the oscillation circuit in the power supply cannot ...

Page 128: ... FC255CX S 12 5 8 Operation Panel Section 12 5 8 1 No Key Operation REFERENCE 1 Test Mode P 58 12 5 8 2 No LCD Indication REFERENCE 1 Test Mode P 58 2 How to Remove the Operation Board MIC Board and LCD P 160 ...

Page 129: ...ead position sensor recording paper sensor are turned ON OFF by the copy operation Therefore each sensor can be checked for proper mechanical operation As for the electric check check whether each voltage is right or not with following flowchart turning each sensor lever ON OFF man ually 12 5 9 1 Check the Document Top Sensor SW351 REMOVE DOCUMENT 12 5 9 2 Check the Document Set Sensor SW352 CHECK...

Page 130: ...130 KX FC255CX S 12 5 9 5 Check the Film End Sensor SW1003 CHECK FILM 12 5 9 6 Check the Motor Position Sensor SW1004 CALL SERVICE 2 12 5 9 7 Check the Hook Switch SW1501 ...

Page 131: ...131 KX FC255CX S 12 5 10 CIS Contact Image Sensor Section Note 1 Test Mode P 58 2 Digital Board PCB1 P 219 Refer to Block Diagram P 18 ...

Page 132: ...132 KX FC255CX S 12 5 11 Thermal Head Section Note Refer to Thermal Head P 19 ...

Page 133: ...ss Handset Cross Reference Power Supply Circuit Reset Circuit P 46 12 5 12 2 Check Battery Charge Cordless Handset Cross Reference Check Power Cordless Handset P 133 Charge Circuit P 46 12 5 12 3 Check Battery Charge Charger Unit Cross Reference Power Supply Circuit P 46 ...

Page 134: ...X FC255CX S 12 5 12 4 Check Link Cordless Handset Cross Reference Power Supply Circuit Reset Circuit P 46 Check Point Cordless Handset P 137 Note 1 Refer to Troubleshooting by Symptom Cordless Handset P 137 ...

Page 135: ...set P 137 12 5 12 5 Check Cordless Handset Transmission Cross Reference Check Sheet for Signal Route P 123 12 5 12 6 Check Cordless Handset Reception Cross Reference How to Check the Cordless Handset Speaker or Receiver P 183 Check Sheet for Signal Route P 123 ...

Page 136: ...136 KX FC255CX S 12 5 12 7 Bell Reception Cordless Handset Cross Reference Check Link Cordless Handset P 134 How to Check the Cordless Handset Speaker or Receiver P 183 ...

Page 137: ...GND is 3 6V 0 3V Backlight is OFF 4 2V 0 3V Backlight is ON IC1 F1 C1 C2 C3 R1 Q1 D1 L1 D2 C 2 5V Supply Confirma tion VDD2 1 Confirm that the voltage between test point VDD2 and GND is 2 5V 0 1V IC1 Q3 C4 C5 D BBIC Confirmation 1 BBIC Confirmation Execute the command getchk 2 Confirm the returned checksum value Connection of checksum value and program number is shown below IC1 X1 C7 C6 R19 E EEPR...

Page 138: ... frequency of CLK executing the command setfreq 00 xx where xx is the value so that the reading of the frequency counter is 10 368000MHz 10Hz Note CLK is displayed only for a few seconds when executing the command conttx after battery is inserted IC1 X1 C6 C7 R19 IC4 C57 K Transmitted Power Con firmation Remove the Antenna before starting step from 1 to 4 1 Configure the DECT tester CMD60 as follo...

Page 139: ...t DECT tester power to 63dBm 8 Execute the command readrssi 9 Confirm that the returned value is 23 8 hex IC1 IC4 C66 C58 C57 C50 C53 C52 R52 C60 C61 R Power RAMP Confirma tion Follow steps 1 to 3 of K 4 Confirm that Power RAMP is matching IC1 IC4 C66 C58 C57 C50 C53 C52 R52 C60 C61 S Audio Check and Confir mation 1 Link to BASE which is connected to Line Simulator 2 Set line voltage to 48V and li...

Page 140: ...140 KX FC255CX S 13 Service Fixture Tools ...

Page 141: ...141 KX FC255CX S 14 Disassembly and Assembly Instructions Please remove the Paper Support Paper Tray and Ink Film before disassembling 14 1 General Section ...

Page 142: ... 2 2 Lower Cabinet Section REFERENCE B 1 How to Remove the Bottom Frame P 148 B 2 How to Remove the P C Boards and Speaker P 149 B 3 How to Remove the Power Supply Board and AC Cord P 150 B 4 How to Remove the Gear Block and Separation Roller P 151 B 5 How to Remove the Gears Motors and Arms of the Gear Block P 152 B 6 How to Remove the Cradle and Hook Switch Board P 154 ...

Page 143: ...move the Platen Roller and Lock Lever P 156 C 3 How to Remove the Pickup Roller and Antenna P 158 14 2 4 Operation Panel Section REFERENCE D 1 How to Remove the Operation Panel P 159 D 2 How to Remove the Operation Board MIC Board and LCD P 160 D 3 How to Remove the Separation Holder and Exit Roller P 161 ...

Page 144: ...144 KX FC255CX S 14 2 5 Cordless Handset Section REFERENCE E 1 How to Remove the Cordless Handset Board P 168 14 2 6 Charger Section REFERENCE F 1 How to Remove the Charger Board P 170 ...

Page 145: ...145 KX FC255CX S 14 3 Disassembly Procedure 14 3 1 How to Remove the Image Sensor CIS ...

Page 146: ...146 KX FC255CX S 14 3 2 How to Remove the Thermal Head ...

Page 147: ...147 KX FC255CX S ...

Page 148: ...148 KX FC255CX S 14 3 3 How to Remove the Bottom Frame ...

Page 149: ...149 KX FC255CX S 14 3 4 How to Remove the P C Boards and Speaker ...

Page 150: ...150 KX FC255CX S 14 3 5 How to Remove the Power Supply Board and AC Cord ...

Page 151: ...151 KX FC255CX S 14 3 6 How to Remove the Gear Block and Separation Roller ...

Page 152: ...152 KX FC255CX S 14 3 7 How to Remove the Gears Motors and Arms of the Gear Block ...

Page 153: ...153 KX FC255CX S ...

Page 154: ...154 KX FC255CX S 14 3 8 How to Remove the Cradle and Hook Switch Board ...

Page 155: ...155 KX FC255CX S 14 3 9 How to Remove the Back Cover ...

Page 156: ...156 KX FC255CX S 14 3 10 How to Remove the Platen Roller and Lock Lever ...

Page 157: ...157 KX FC255CX S ...

Page 158: ...158 KX FC255CX S 14 3 11 How to Remove the Pickup Roller and Antenna ...

Page 159: ...159 KX FC255CX S 14 3 12 How to Remove the Operation Panel ...

Page 160: ...160 KX FC255CX S 14 3 13 How to Remove the Operation Board MIC Board and LCD ...

Page 161: ...161 KX FC255CX S 14 3 14 How to Remove the Separation Holder and Exit Roller ...

Page 162: ...162 KX FC255CX S 14 3 15 Installation Position of the Lead Wires 14 3 15 1 Lower Section ...

Page 163: ...163 KX FC255CX S ...

Page 164: ...164 KX FC255CX S ...

Page 165: ...165 KX FC255CX S ...

Page 166: ...166 KX FC255CX S 14 3 15 2 Operation Panel Section ...

Page 167: ...167 KX FC255CX S 14 3 15 3 Back Cover Section ...

Page 168: ...168 KX FC255CX S 14 3 16 How to Remove the Cordless Handset Board ...

Page 169: ...169 KX FC255CX S 14 3 16 1 Fix the LCD to the Cordless Handset Board ...

Page 170: ...170 KX FC255CX S 14 3 17 How to Remove the Charger Board ...

Page 171: ...245 series TCD500 series PQZZ1CD505E change the following values of resistance Then you can use it as a JIG Cable for both this model and FC245 series TG8100 and TCD500 series It is an upper compatible JIG Cable 15 1 2 PC Setting 15 1 2 1 Connections At pins of CN2 on the back side of the digital board Please connect the component and the cable as follows Refer to Adjustment Standard Base Unit P 1...

Page 172: ...7B700000 input 00 7B 70 00 00 rdeeprom read EEPROM with address 1st 2nd Address you want example if you want to read address 0010 input 00 10 3rd data length example if you want to read 10 datas from address input 10 wreeprom write EEPROM with address 1st 2nd Address you want example if you want to write to address 0010 input 00 10 3rd data length example if you want to write 2 datas from address ...

Page 173: ...o adjust Frequency Refer to Frequency Adjustment P 173 15 1 4 Frequency and Voltage Adjustment 15 1 4 1 Settings and Connectings Please connect a Frequency counter to RFCLK point on the Digital Board located near the RF unit Please connect a Digital multimeter to 1 8V_A or 1 8V_B point on the Digital Board located near the BBIC See the Adjustment Standard Base Unit P 175 15 1 4 2 Frequency Adjustm...

Page 174: ... 1 4 3 Voltage Adjustment Note varies depending on the country When you write new value to the EEPROM it is necessary to turn the power off and then power on again After power on again Board works with new value you wrote ...

Page 175: ...4 C33 C31 R602 R601 C611 Q23 L604 L603 R604 IC102 IC8 RSVI0 B BBRST A TEST AMON 2 5VDa UTX URTS URX UCTS EYECLK ROMCSa SPIDO 3 3VM 3 3VDa 4 0V IC23 Q6 Q8 8 IC22 4 1 E C610 C607 C603 R603 C605 C601 C606 RA13 C38 R23 C29 C26 C27 C23 X1 L38 L33 1 R136 R210 C202 C153 1 16 C666 C415 IC107 R1 R170 R171 R173 R174 R175 R176 L605 R338 1 Q20 17 C10 C9 C8 C286 C12 R12 R11 C675 Q28 C200 C137 C190 8 7 C136 C17...

Page 176: ...C385 R392 R296 128 C91 C104 C71 C78 C361 C365 Q7 R62 R366 R304 C110 C108 R391 C106 C111 IC4 1 103 R627 39 R295 X5 C274 Q26 E R393 R387 R384 R383 R381 R621 R108 R107 R620 R619 R618 R320 R241 R624 R253 R625 64 C616 R382 L44 L47 C397 C350 R360 C672 R364 R365 IC7 R254 R409 R410 R411 R412 C410 C411 C400 IC29 C402 L46 C401 R361 C37 80 81 R380 R150 R148 C172 IC10 C168 73 CE2 C169 R24 R25 R32 C28 37 R109 ...

Page 177: ... the Simulator Equipments for checking please refer to below 15 3 1 Flow Solder Side View Note A is referred to Check Point Charge Unit P 139 PQUP11413Z for_ PQLV30045ZA BLACK RED TP4 TP3 A TP1 TP2 1 2 PbF GND TP4 TP3 TP1 DC POWER 6 5V Digital Volt Meter 12Ω 2W GND TP2 A ...

Page 178: ...5 4 1 2 JIG and PC Serial JIG JIG Cable PQZZ1CD300E PC which runs in DOS mode Batch file CD ROM for setting PFZZFC255CX Note If you have the JIG Cable for TCD500 series PQZZ1CD505E change the following values of resis tance Then you can use it as a JIG Cable for both TCD300 and TCD500 series It is an upper compatible JIG Cable 15 4 2 PC Setting 15 4 2 1 Connections Connect the DC Power or Battery ...

Page 179: ...LASH Type rdeeprom 00 00 FF and the data from address 00 00 to FF is read out readid Read ID RFPI Type readid and the registered ID is read out writeid Write ID RFPI Type writeid 00 18 E0 0E 98 and the ID 0018 E0 0E 98 is written setfreq Adjust Frequency of RFIC Type setfreq nn getchk Read checksum Type getchk wreeprom Write the data of FLASH Type wreeprom 01 23 45 01 23 is address and 45 is data ...

Page 180: ... C115 R107 R106 L13 C100 C95 R93 C82 L9 C98 L12 C99 C101 SP_TEST1 SP SP_TEST2 C60 C59 1 10 16 17 11 32 27 26 C61 C62 C56 C53 C52 R52 C58 R51 CLK CLK_G C57 C3 POWER VDD4 VDD3 VDD1 VDD2 R43 R25 R22 C14 C113 C80 C35 C92 R46 C34 J2 J4 URX UTX C91 C19 C6 R19 R2 R1 R70 R71 R12 R109 D4 D5 C70 REV_TEST2 REV_TEST1 C25 Q8 L7 R13 C24 C36 C97 REV IC1 IC3 KX TG8120 TG8100 TGA810 X1 IC4 PQUP11411Z 1 80 20 21 40...

Page 181: ...and FC255XXrevYY bat 1 3 Model code batch file Excute the command FC255XXmip bat 1 4 Clock adjustment Refer to Frequency Adjustment P 173 EEPROM IC22 Adjustment parameter data country version batch file default batch file etc 1 Default batch file Execute the command default bat 2 Country version batch file 2 Execute the command FC255XXrevYY bat 1 3 Model code batch file Excute the command FC255XXm...

Page 182: ...r RAMP is matching Item Value Refer to TX Power 19 dBm 25 dBm Check Point Cordless Handset K Modulation 350 400 320 370 kHz div Check Point Cordless Handset L Frequency Offset 45 kHz 45 kHz Check Point Cordless Handset M Frequency Drift 30 kHz ms Check Point Cordless Handset N RX Sensitivity 1000 ppm Check Point Cordless Handset O Timing Accuracy 2 0 ppm Check Point Cordless Handset P RSSI Level 1...

Page 183: ...set BASE UNIT CORDLESS HANDSET Channel No Transmit Frequency Receive Frequency Transmit Frequency Receive Frequency 1 1897 344 1897 344 1897 344 1897 344 2 1895 616 1895 616 1895 616 1895 616 3 1893 888 1893 888 1893 888 1893 888 4 1892 160 1892 160 1892 160 1892 160 5 1890 432 1890 432 1890 432 1890 432 6 1888 704 1888 704 1888 704 1888 704 7 1886 976 1886 976 1886 976 1886 976 8 1885 248 1885 24...

Page 184: ...nd communication testing to determine if the problem originates from the transmitter receiver or the telephone line 4 Determine causes Determine the causes of the equipment problem by trouble shooting 5 Equipment repairs Repair or replace the defective parts and take appropriate measures at this stage to ensure that the problem will not recur 6 Confirm normal operation of the equipment After compl...

Page 185: ...ration of the sensors See Maintenance Check Items Component Locations P 184 and How to Remove the P C Boards and Speaker P 149 6 Glass If the glass is dirty clean them with a dry soft cloth Refer to Document feeder recording paper feeder scanner glass cleaning P 195 7 Abnormal wear and tear or loose parts Replace the part Check if the screws are tight on all parts No Item Cleaning Cycle Replacemen...

Page 186: ...election When a motor with Drive Motor Gear attached rotates clockwise CW Swing Gear E engages CAM Gear to rotate clockwise CW This operation provide five mode options A Transmit mode B Paper Pickup mode C Assist mode D Receive mode and E Copy mode selected by the Sensor Switch The Sensor Switch Lever s position in the CAM Gear controlled by the soft ware selects a specific mode You can see which ...

Page 187: ...Location in Sensor and Switches P 24 A Transmit mode See Fig A The Swing Gear A engages with the next gear to drive Document Separation Roller and Document Exit Roller The Swing Gear C engages with the next gear to drive Paper Exit Roller Fig A Transmit mode B Paper Pickup mode See Fig B The Swing Gear C engages with the next gear to drive Paper Exit Roller The Swing Gear D engages with the next g...

Page 188: ... drive Platen Roller gear and Ribbon Drive Gear The Swing Gear C engages with the next gear to drive Paper Exit Roller Gear Fig C Assist mode D Receive mode See Fig D The Swing Gear B engages with the next gear to drive Platen Roller gear and Ribbon Drive Gear The Swing Gear C engages with the next gear to drive Paper Exit Roller Gear Fig D Receive mode ...

Page 189: ...Swing Gear A engages with the next gear to drive Document Separation Roller and Document Exit Roller The Swing Gear B engages with the next gear to drive Platen Roller gear and Ribbon Drive Gear The Swing Gear C engages with the next gear to drive Paper Exit Roller Fig E Copy mode ...

Page 190: ...X S 16 2 3 Mechanical Movements in the Main Operations transmitting documents receiving faxes and copying 16 2 3 1 Idle Status Note See Sensor Locations in Sensor and Switches P 24 CW clockwise CCW counterclockwise ...

Page 191: ...191 KX FC255CX S 16 2 3 2 Transmitting Documents REFERENCE Sensor Section P 129 16 2 3 3 Receiving Fax Note See Sensor Locations in Sensor and Switches P 24 ...

Page 192: ...192 KX FC255CX S 16 2 3 4 Copying Note See Sensor Locations in Sensor and Switches P 24 REFERENCE Sensor Section P 129 ...

Page 193: ...ove the recording paper then remove the paper tray beforehand otherwise the paper may misfeed or jam 1 Open the front cover push the green lever then open the back cover 2 Remove the jammed recording paper 3 Turn the gear of the blue core in the direction of the arrow until the ink film is tight and at least one layer of ink film is wrapped around the blue core ...

Page 194: ...3 and Installing the Recording Paper P 54 16 3 1 2 When the recording paper was not fed into the unit properly The display will show the following Remove the recording paper and straighten Insert the paper then press SET to clear the message 16 3 2 Document Jams 1 Open the front cover Remove the jammed document carefully 2 Close the front cover securely Note Do not pull out the jammed paper forcib...

Page 195: ...n then open the back cover 3 Clean the document feeder rollers and rubber flap with a cloth moistened with isopropyl rubbing alco hol and let all parts dry thoroughly Clean the scanner glass with a soft dry cloth Caution Do not use paper products such as paper towels or tissues 4 Clean the recording paper feeder roller with a cloth moistened with isopropyl rubbing alcohol and let all parts dry tho...

Page 196: ... cover push the green button then open the back cover 3 Remove the ink film 4 Clean the thermal head with a cloth moistened with isopropyl rubbing alcohol and let it dry thoroughly Caution To prevent a malfunction due to static electricity do not use a dry cloth and do not touch the thermal head directly 5 Re install the ink film and close the covers see step 4 to 7 on Installing the Ink film P 52...

Page 197: ...197 KX FC255CX S 17 Miscellaneous 17 1 Terminal Guide of the ICs Transistors and Diodes 17 1 1 Digital Board 17 1 2 Analog Board ...

Page 198: ...198 KX FC255CX S 17 1 3 Operation Board Microphone Board 17 1 4 Power Supply Board 17 1 5 Interface Board ...

Page 199: ...199 KX FC255CX S 17 1 6 Cordless Handset Board ...

Page 200: ... Flux Recommended Flux Specific Gravity 0 82 Type RMA lower residue non cleaning type Note See About Lead Free Solder PbF Pb free P 6 17 2 2 Flat Package IC Removal Procedure 1 Put plenty of solder on the IC pins so that the pins can be completely covered Note If the IC pins are not soldered enough you may give pressure to the P C board when cutting the pins with a cutter 2 Make a few cuts into th...

Page 201: ...of the IC setting with the corresponding soldering foil 2 Apply flux to all pins of the FLAT PACKAGE IC 3 Solder the pins sliding the soldering iron in the direction of the arrow 17 2 4 Bridge Modification Procedure 1 Lightly resolder the bridged portion 2 Remove the remaining solder along the pins using a soldering iron as shown in the figure below ...

Page 202: ...202 KX FC255CX S 17 3 Test Chart 17 3 1 ITU T No 1 Test Chart ...

Page 203: ...203 KX FC255CX S 17 3 2 ITU T No 2 Test Chart ...

Page 204: ...204 KX FC255CX S 17 3 3 Test Chart ...

Page 205: ...205 KX FC255CX S MEMO ...

Page 206: ...Dn 62 GPO1 63 GP02 64 GPI0 65 GPI1 66 GPI2 67 TEST 68 XTLI CLKIN 69 XTLO 70 VDD70 71 VSS71 72 VSSo72 73 AVSS 74 VBG 75 ENABLE_VREG18D 76 AVDD 77 VDDo77 78 CSn 79 RDn 80 WRn 81 SPRn 82 A4 83 A3 84 A2 85 A1 86 A0 87 VDDo87 88 VSSo88 89 VSS89 90 VDD90 91 D0 92 D1 93 D2 94 D3 95 D4 96 D5 97 D6 98 D7 99 RESETn 100 IRQn 3 3VD 3 3VD CN5 1 FILM_CHEK 2 MOTPOS 3 24V 4 HEADON 5 THLAT 6 STB1 7 3 3V 8 TH_TMP 9...

Page 207: ...VA J150p C601 C602 NC 10K R614 24VA 24V C612 NC 10K R612 10K R613 C615 K1u 24VA L604 L603 12VA Q601 K1000p C404 6 8K R11 C11 K0 22u J115 NC D10p C605 C606 NC L602 4 7K R99 K1000p C124 C610 NC CN19 1 LINETX 2 MONRX 3 MDMRX 4 BBRX 5 5V 6 BREAK 7 P SHORT 8 DCN 9 LINERLY 10 CLIPRLY HSALC 11 BELL 12 AG 13 24V 14 DG 15 CPC 68K R369 68K R371 K0 1u C603 K0 1u C607 R603 18K R604 18K 120K R602 L1 L2 L28 NC ...

Page 208: ...ILAT IOP47 42 20KOSC IOP56 43 XWAIT IOP60 44 XHSTRD IOP40 45 XHSTWR IOP41 46 XDPRBE MUX OP53 47 ADR15 OP 48 ADR14 OP 49 ADR13 OP 50 VDD2 5V 51 XOUT 52 XIN 53 VSS 54 VDD3 3V 55 XTEST 56 TEST1 57 TEST2 58 TEST3 59 TEST4 60 XMDMINT 61 XMDMCS 62 XRAS IOP42 63 XCAS1 IOP43 64 XCAS2 IOP44 65 XRESCS2 OP71 66 DB3 67 DB2 68 DB4 69 DB1 70 DB5 71 VDD3 3V 72 VSS 73 VSS 74 VDD3 3V 75 DB0 76 DB6 77 DB7 78 XR0MCS...

Page 209: ...0 LINEOUT 101 LINE_IN 102 LINE_IN 103 LDO1_Sense 104 LDO1_CTRL 105 LDO2_CTRL 106 VBAT2 107 CIDIN 108 AVS2 109 AVD2 110 LSR REF 111 LSR REF 112 CIDIN 113 CIDOUT 114 MIC 115 VREF 116 VBUF 117 AGND 118 MIC 119 VREF 120 RSTn 121 AD0 EXT_MEMORY 122 AD1 123 AD2 124 AD3 125 AD4 126 AD5 127 AD6 128 AD7 5V X5 PB1 BBRST K1000p C331 J150p C332 D10p C333 D10p C334 100 R343 100 R344 D10p C335 D10p C336 D10p C3...

Page 210: ...07 CN105 1 SP 2 SP 5V DA102 NC 1 2 3 DA103 NC 1 2 3 Q110 PC105 NC 1 2 3 4 CN106 1 REED 2 GND 3 PTOP 4 COVEROPEN R148 D10p C119 C123 NC R131 100 R132 100 C130 K0 1u C134 K0 1u J680p C162 47K R154 R166 10K R201 R202 R194 R190 R208 R209 R193 R189 R196 R192 R195 R191 R204 R210 R203 R211 R205 R213 R206 R214 CN104 1 PTOP 2 REED 3 COVEROPEN 4 SP 5 SP 6 5V 7 LINE_P 8 LINE_M CN103 1 LINETX 2 MONRX 3 MDMRX ...

Page 211: ... C122 C112 R121 R122 C104 C113 J112 J113 J114 J115 J116 J117 J118 2 7k R120 Q105 R110 R111 R109 R113 R114 R112 Q111 R119 R118 R123 R116 Q104 Q107 Q102 Q101 R171 R172 R173 R174 R175 R180 R181 R182 R183 R184 D106 C108 C109 C106 C111 C110 1k R130 DA101 NC 1 2 3 Q103 Q106 Q108 C107 D101 D102 D108 D107 D109 PC101 1 2 3 4 PC106 NC 1 2 3 4 PC103 NC 1 2 3 4 47K 1 2W R104 D105 1 2 3 4 L101 R169 R170 R167 R...

Page 212: ... LED1 IPENB 22 RWB RWB IP 24 E RESB 25 D4 STBB IP 26 D5 CSB IP 27 D6 CLK IP 28 D7 DIO IP 29 RESET 30 SCLK 31 RXD 32 TXD 33 START 35 LED2 36 LED3 37 LED4 38 VSS2 39 VDD2 40 LED5 41 KIN0 42 KSL0 43 KSL1 44 LOCATOR INTERCOM SW302 R SW328 STOP SW332 5V 5V 5V 5V 5V 5V 5V MIC NC 1 2 SW352 NC 4 3 1 2 SW351 NC 4 3 1 2 MIC 1 MIC 1 LED301 AUTO ANSWER RED 1 2 CHARGE RED LED302 NC 1 2 330 R320 180 R342 1k R34...

Page 213: ... 1000p 1k D201 T101 C122 0 22 D110 47k R112 R110 47 R106 100k R201 47 R221 D205 1k R224 5 6k VR201 4 7k R230 150 2 R231 150 2 R234 47k R233 47k R232 15k R202 R225 3 3k R222 PC101 1K Q203 R229 18k R113 10k R107 47 2W G S D Q101 D107 100 R123 1 8k R105 D106 R111 15 D103 D102 D104 D101 0 22 2 ZNR101 L101 750 R101 1M R102 1M R103 1M R122 390 KX FC255CX S POWER SUPPLY BOARD D105 L102 L103 C124 0 01 GND...

Page 214: ...K 6 7 3 3V 8 9 10 LATCH 11 COM CN405 1 RXE 2 3 4 5 L405 L406 L403 L404 CN411 1 4V 2 6V 3 GND 4 GND 5 GND 6 24V 7 24V 8 24V 0 R454 6V CN408 1 2 CN403 1 4V 2 CHARGE 3 6V 4 GND 5 GND 6 RXE 7 RM3 8 RM2 9 RM1 10 RM0 4 0V Q405 C406 K1000p Q402 CN407 1 CHARGE 2 6V 3 D402 8V D403 8V L410 L408 L409 R404 220 J5 C403 Z0 1u F403 TO MOTOR POSTION SENSOR TO CHARGE TERMINAL TO THERMAL HEAD TO MOTOR FROM POWER SU...

Page 215: ...5CX S Sensor Board SW1003 3 4 1 2 GND TP2 FLMDET TP1 FILM Sensor AP1 KX FC255CX S Film End Sensor Board SW1004 4 3 1 2 CL1 CL2 KX FC255CX S Motor Position Sensor Board D1502 D1501 DG C1502 NC SW1501 1 3 2 4 6 5 CL1 CL2 CL3 CL4 CL5 CL6 CL7 CL8 CL9 CL10 CN1501 1 HSMIC 2 HSSP 3 HSSP 4 HSMIC 5 6 CN1502 1 HSMIC 2 HSMIC 3 GND 4 HOOK 5 HSSP 6 HSSP NC L1505 1 2 3 4 8 7 6 5 JJ1501 JJ1502 L1501 L1502 L1503 ...

Page 216: ...k R64 2 5V 2 5V 10 R91 POWER K1u C39 TP20 TP21 BAT UP 1 2 DOWN 1 2 RIGHT 1 2 LEFT 1 2 47 R71 R70 NC K1u C29 Q12 1 3 2 4 2V BATTERY 1 8V SOFT_B 1 2 SP 1 2 J15p C7 C8 K0 22u C9 NC K0 1u C25 K0 1u C26 7 1 2 4 1 2 TALK 1 2 S1 1 2 LED1 LED J3 J4 D8p C6 LED10 A K NC C91 NC C92 K0 1u C19 K0 1u C24 2 1 2 3 1 2 1 1 2 6 12 8 1 2 5 1 2 9 1 2 AST 1 2 0 1 2 SHARP 1 2 L6 NC 5 6k R47 1k R61 1k R62 R63 NC JTAG VD...

Page 217: ... 2 3 1 Q11 2 3 1 2 5V J100p C37 REV_TEST1 REV_TEST2 SP_TEST1 SP_TEST2 ANT1 TP22 TP23 CLK C72 NC CN4 1 4 2 3 5 Z10u C86 K0 1u C11 MIC 1 2 C59 NC C62 NC D4 A K D5 A K K4 7u C60 K4 7u C61 33 R21 R34 NC 2 2k R25 10k R44 680k R43 R35 NC 33 R22 D10p C50 NC C14 NC C51 NC C54 NC C55 NC C56 NC C70 NC C71 NC C81 D10p C85 470 R23 3 3k R24 10p C98 1k R31 470p C82 D10p C83 100k R32 NC C80 ANT 1k L8 1k L12 L10 ...

Page 218: ...218 KX FC255CX S 18 11 Charger Board PCB200 TP3 G J1 2 1 TP4 TP2 TP1 10 R1 10 R3 12 R2 12 R4 KX FC255CX S Charger Board ...

Page 219: ...33 C360 C359 C392 C388 C393 C391 C386 C384 C385 R392 R296 128 C91 C104 C71 C78 C361 C365 Q7 R62 R366 R304 C110 C108 R391 C106 C111 IC4 1 103 R627 39 R295 X5 C274 Q26 E R393 R387 R384 R383 R381 R621 R108 R107 R620 R619 R618 R320 R241 R624 R253 R625 64 C616 R382 L44 L47 C397 C350 R360 C672 R364 R365 IC7 R254 R409 R410 R411 R412 C410 C411 C400 IC29 C402 L46 C401 R361 C37 80 81 R380 R150 R148 C172 IC1...

Page 220: ...4 R243 R244 IC16 R22 C404 R397 R30 C34 C33 C31 R602 R601 C611 Q23 L604 L603 R604 IC102 IC8 RSVI0 B BBRST A TEST AMON 2 5VDa UTX URTS URX UCTS EYECLK ROMCSa SPIDO 3 3VM 3 3VDa 4 0V IC23 Q6 Q8 8 IC22 4 1 E C610 C607 C603 R603 C605 C601 C606 RA13 C38 R23 C29 C26 C27 C23 X1 L38 L33 1 R136 R210 C202 C153 1 16 C666 C415 IC107 R1 R170 R171 R173 R174 R175 R176 L605 R338 1 Q20 17 C10 C9 C8 C286 C12 R12 R11...

Page 221: ...203 R202 R201 R204 C191 C189 R200 R195 C186 C185 C188 C194 C187 R182 R174 R173 R184 R175 J116 J117 J118 1 1 2 4 5 4 1 8 C184 C183 DA102 DA103 IC105 5 4 1 8 IC106 5 4 1 8 IC101 5 4 1 8 IC103 5 4 1 8 IC104 D113 R212 D115 R211 R209 R208 R210 C193 C142 C141 C140 C192 R131 R132 C124 C125 R214 R206 R205 R207 R213 R145 R148 C149 R149 C147 C148 C179 J107 C150 C145 R144 D114 R134 R136 R142 R135 R133 C126 C...

Page 222: ...JJ501 JJ1006 PC101 JJ1010 L101 SA101 POS101 J104 D103 D104 RL101 1 8 1 JJ504 JJ1011 R124 R123 D110 C111 C115 R115 D109 PC104 C181 C180 JJ1012 JJ1016 D112 D111 T101 T102 PC102 JJ507 JJ508 JJ510 JJ1001 JJ514 C169 D118 JJ515 JJ1017 JJ516 JJ518 JJ517 R170 R168 R104 FLT101 C103 C102 C101 R108 C195 C106 JJ524 E D107 C121 C107 D106 D108 Q110 JJ513 JJ521 J110 PC105 PC106 PC103 RL102 D102 D101 SA102 CN101 ...

Page 223: ...1 JJ321 JJ320 JJ319 JJ318 JJ317 JJ315 JJ314 JJ304 JJ305 JJ310 JJ306 JJ303 JJ302 JJ301 SW313 SW314 JJ333 SP PHONE MUTE FLASH CALL WAIT FAX START LOCATOR INTERCOM BROADCAST HELP MENU SET CHECK MEMO ERASE PLAYBACK AUTO ANSWER 8 7 9 5 4 6 REDIAL PAUSE CALLER ID STOP COPY 2 1 3 PFUP1582Y a A PbF C300 C308 C341 C305 C304 C303 C307 L1 L2 L3 C330 C331 C301 C306 R342 R343 R341 R310 R311 R312 R315 R304 R305...

Page 224: ...EE SOLDER SIDE FUSE CAUTION 94V 0 L N ZNR101 F101 C103 C102 JP104 JP105 JP103 JP102 L103 R105 C109 L102 C211 D201 JP208 JP207 JP206 JP204 JP205 C201 C217 R230 CN202 1 8 L201 C111 R110 D107 D105 C105 D110 D102 C106 C108 C110 D106 R107 R106 PC101 PRIMARY SECONDARY T101 R111 JP101 JP106 JP202 JP209 D205 R201 R231 C215 C212 C216 VR201 D202 IC202 Q101 D104 D103 D101 BROWN BLUE L101 C101 PbF Component V...

Page 225: ... 5 1 Q402 E IC401 1 8 16 9 11 1 2 2 CN409 CN402 1 11 PCB CH PbF PbF PFUP1585Z A b D401 L408 Q403 R454 R402 R403 C406 R404 L410 L409 C402 C403 L406 L405 L403 L404 C404 C405 R401 F401 1 25A 0 25A F402 1 25A F403 10 1 11 1 1 16 1 1 1 1 2 1 2 8 8 9 5 5 4 1 11 Q401 E Q405 E 1 8 3 PFUP1579Z PbF A a SW1002 SW1001 CN1001 3 OPEN PTOP 1 1 4 2 KX FC255CX S Sensor Board PFUP1579Z PbF A b SW1003 BLACK WHITE KX...

Page 226: ...9 Hook Switch Board PCB10 C1502 JJ1502 D1502 D1501 L1504 L1501 L1502 L1503 JJ1501 1 1 6 3 4 2 PFUP1586Z PbF A KX FC255CX S Hook Switch Board Bottom View SW1501 CN1501 CN1502 1 6 L1505 1 2 3 4 PFUP1586Z PbF A Component View ...

Page 227: ...11 D12 R41 R40 C94 R92 C7 CHARGE CHARGE MIC TP20 TP21 TP23 TP22 J3 J1 D8 Q4 D6 D7 C12 C30 C31 C18 C8 C21 C26 C22 C39 C32 C33 C23 R16 R66 GND BAT C5 D9 D10 C4 C9 C10 R63 JTAG R44 C102 C110 C86 C115 R107 R106 L13 C100 C95 R93 C82 L9 C98 L12 C99 C101 SP_TEST1 SP SP_TEST2 C60 C59 1 10 16 17 11 32 27 26 C61 C62 C56 C53 C52 R52 C58 R51 CLK CLK_G C57 C3 POWER VDD4 VDD3 VDD1 VDD2 R43 R25 R22 C14 C113 C80 ...

Page 228: ... R95 R105 C105 C114 R108 1 20 R96 C103 L6 C107 CN3 R103 R104 C106 C104 C27 L14 R99 R98 C28 R97 UP S1 CANCEL DOWN RIGHT LED9 LED8 SP LEFT 1 2 3 6 5 7 0 R 4 9 8 INT MIC TALK KX FC255CX S Cordless Handset Board Flow Solder Side View PbF LED1 LED LED10 LED4 LED5 LED7 LED6 ...

Page 229: ...urements 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 PQUP11413Z for_ PQLV30045ZA BLACK RED A R1 R3 J1 R2 R4 1 2 PbF KX FC255CX S Charger Board Component View PQUP11413Z for_ PQLV30045ZA BLACK RED TP4 TP3 A TP1 TP2 1 2 PbF KX FC255CX S Charger Board Flow Solder Side View ...

Page 230: ... INT7n General purpose I O port 160k pull down I_PD S ENB I voltage convert with R R 3 3V 3 0V 95 P1 6 PON INT6n General purpose I O port power on 160k pull down I_PD directly connect to 1 8V 63 P1 5 INT5n HOLD ACKn VDDE General purpose I O port selectable pullup O_1 SPMUTE O directly connect to SP AMP CD 62 P1 4 INT4n HOLDn General purpose I O port selectable pullup I_PU CHK IN2 I connect to CHK_...

Page 231: ...RESCS2 HIGH O 101 RBA5 OP RBA5 A18 133 KLATCH KLATCH KLATCH O PIN NO SIGNAL RESET STATE 533 I O 21 IRDATXD IOP81 TXD LOW CHK_IN2 I O 22 IRDARXD IOP80 RXD INPUT F_TXMUTE O 23 TXD IOP30 IOP INPUT TXD O 24 RXD IOP31 IOP INPUT RXD I 25 XRTS IOP32 IOP INPUT XRTS O 26 XCTS IOP33 IOP INPUT XCTS I 34 FMEMDO IOP26 IOP INPUT LEDON O 39 MIDAT IOP45 IOP INPUT PWRCNT O 40 MICLK IOP46 IOP INPUT OPERST O 41 MILA...

Page 232: ...E 533 I O 93 GPI2 GPI2 INPUT I 94 GPI3 GPI3 INPUT I 95 GPI4 GPI4 INPUT I 96 GPI5 GPI5 INPUT I 97 GPI6 GPI6 INPUT CHK_IN2 I 98 GPI7 GPI7 INPUT CHK_IN3 I 99 GPO7 GPO7 LOW O 101 GPO6 GPO6 LOW O 102 GPO5 GPO5 LOW O 104 GPO4 GPO4 LOW O 105 GPO3 GPO3 LOW GPO3 O 109 GPO2 GPO2 LOW O 110 GPO1 GPO1 LOW O PIN NO SIGNAL RESET STATE 533 I O ...

Page 233: ... VSSPA S VSSPA S 30 PAOUTp A O PAOUTp O I PD 31 VDDPA S VDDPA S 32 PAOUTp A O PAOUTp O I PD 33 VSSPA S VSSPA S 34 P3 3 PD3 D IO COL3 I O I PD 35 P3 4 PD4 D IO COL4 I O I PD 36 TDOD P3 5 PD5 D IO COL5 I O I PD 37 VSS S VSS S 38 VDDIO S VDDIO S 39 VDD S VDD S Å 40 PCM_FSC INT0n P1 0 D IO ROW0 I I PU 41 P0 0 UTX D O UTX O I PU 42 P0 1 URX D I URX I I PU 43 P0 2 JTIO D IO JTAG I O I PU 44 P0 3 SDA2 D ...

Page 234: ...O VBUF O O 71 AGND S AGND S 72 MICp A I MICp I I 73 VREFp A O VREFp O O 74 P3 0 D O COL0 I O I PD 75 P1 4 INT4n D O KEY_LED O I 76 P1 3 INT3n D I ROW3 I I 77 P2 2 CLK100 D O LCD_RESET O I PD 78 AVS_Sence A I AVS_Sence I I 79 ADC3 A I ADC3 I I 80 ADC0 A I Headset_detect I I Pin No Description I O Connection at Normal mode at Reset mode ...

Page 235: ...235 KX FC255CX S 21 Exploded View and Replacement Parts List 21 1 Cabinet Mechanical and Electrical Parts Location 21 1 1 General Section ...

Page 236: ...236 KX FC255CX S 21 1 2 Operation Panel Section ...

Page 237: ...237 KX FC255CX S 21 1 3 Upper Cabinet Section ...

Page 238: ...238 KX FC255CX S 21 1 4 Back Cover Section ...

Page 239: ...239 KX FC255CX S ...

Page 240: ...240 KX FC255CX S 21 1 5 Lower Cabinet Section ...

Page 241: ...241 KX FC255CX S 21 1 6 Gear Block Section ...

Page 242: ...242 KX FC255CX S ...

Page 243: ... cable is fixed by soldering Refer to Fix the LCD to the Cordless Handset Board P 169 2 The rechargeable Ni MH battery HHR 4EPT Capacity up to 750 mAh is available through sales route of Panasonic 3 Attach the spacer No 323 to the exact location described above ...

Page 244: ...244 KX FC255CX S 21 1 8 Charger Section ...

Page 245: ...245 KX FC255CX S 21 1 9 Screws ...

Page 246: ...246 KX FC255CX S 21 1 10 Accessories and Packing Materials Note 1 for Service Model No for A13 BELT CLIP through sales route of Panasonic is KX TCA718EX ...

Page 247: ...RATION HOLDER ABS HB 15 PFUS1712Z COIL SPRING SUS 16 PFHR1575Z SPACER DOC FEED SUPPORT POM HB 17 PFUS1713Z COIL SPRING DOC FEED SUS 18 PFJS11M38Z CONNECTOR 11 PIN Ref No Part No Part Name Description Remarks 40 L1CC00000063 PRINTER UNITS THERMAL HEAD 41 PFHR1569X GUIDE HOLDER LEFT POM HB 42 PFHR1570Z GUIDE HOLDER RIGHT POM HB 43 PFHX1350Z SPACER SHEET 44 PFJS11M16Z CONNECTOR 11 PIN 45 PFUS1710Z CO...

Page 248: ...HB 195 PFDG1487Z GEAR POM HB 196 PFDG1481Z GEAR POM HB 197 PFUA1081Z CHASSIS ABS PBT V0 198 PFDG1489Z GEAR POM HB 199 PFDG1479Z GEAR POM HB Ref No Part No Part Name Description Remarks Ref No Part No Part Name Description Remarks 301 PQGP10303Z1 PANEL AS HB 302 PQHS10721Y TAPE DOUBLE SIDED LCD 303 PQKM10708X3 CABINET BODY ABS HB 304 PQHR11196Z OPTIC CONDUCTIVE PARTS LED LENS PS HB 305 PQHS10730Z S...

Page 249: ...0DDCM000001 DIODE SI RF UNIT IC28 PFLP1714Z RF UNIT S CONNECTORS CN2 K1MY14AA0080 CONNECTOR 14 PIN Ref No Part No Part Name Description Remarks CN4 K1KA10A00441 CONNECTOR 10 PIN CN5 K1KA11A00170 CONNECTOR 11 PIN CN14 K1KA07A00257 CONNECTOR 7 PIN CN18 K1KA05A00413 CONNECTOR 5 PIN CN19 K1KA15A00163 CONNECTOR 15 PIN CN203 K1KA06A00428 CONNECTOR 6 PIN CN206 K1KA08A00440 CONNECTOR 8 PIN CN918 K1KA02A00...

Page 250: ...J101 100 R347 ERJ2GEJ472X 4 7k R348 ERJ2GEJ102 1k R350 ERJ2GEJ472X 4 7k Ref No Part No Part Name Description Remarks R351 ERJ2GEJ102 1k R353 ERJ2GEJ472X 4 7k R354 ERJ2GEJ102 1k R356 ERJ2GEJ821 820 R357 ERJ2GEJ560X 56 R359 ERJ2GE0R00 0 R360 ERJ3GEYJ181 180 R361 ERJ3GEYJ181 180 R364 ERJ3EKF2200 220 R365 ERJ3EKF2200 220 R366 ERJ2GEJ272 2 7k R367 ERJ2GEJ472X 4 7k R368 ERJ2GEJ102 1k R369 ERJ2GEJ683 68k...

Page 251: ...J0EF1C104Z 0 1 C206 ECJ0EC1H101J 100P C219 ECJ0EB1C103K 0 01 Ref No Part No Part Name Description Remarks C227 ECJ0EC1H220J 22P C229 ECJ0EF1C104Z 0 1 C247 ECJ0EB1A104K 0 1 C248 ECJ0EB1H331K 330P C273 ECJ0EB1H102K 0 001 C274 ECJ0EB1A104K 0 1 C275 ECJ0EB1H102K 0 001 C276 ECJ0EB1H331K 330P C277 ECJ0EB1C103K 0 01 C278 ECJ0EB1A104K 0 1 C282 ECJ0EB1H331K 330P C283 F2G0J1010042 100 C286 ECJ0EC1H100D 10P ...

Page 252: ...102 J0LS00000024 VARISTOR Surge Absorber ZNR101 ERZVA7D151 VARISTOR RESISTORS Ref No Part No Part Name Description Remarks J105 ERJ6GEY0R00 0 J107 ERJ3GEY0R00 0 J119 ERJ3GEY0R00 0 J120 ERJ3GEY0R00 0 R101 ERDS1TJ223 22k S R104 ERDS1TJ473 47k R107 ERJ3GEYJ471 470 R115 ERDS2TJ220 22 R120 ERJ3GEYJ272 2 7k R125 ERJ3GEYJ153 15k R126 ERJ3GEYJ472 4 7k R130 ERJ3GEYJ102 1k R131 ERJ3GEYJ101 100 R132 ERJ3GEYJ...

Page 253: ... 4 7 R316 ERJ3GEYJ181 180 R320 ERJ3GEYJ331 330 R330 ERJ3GEYJ472 4 7k R331 ERJ3GEYJ101 100 R332 ERJ3GEYJ472 4 7k R333 ERJ3GEYJ101 100 R341 ERJ3GEYJ332 3 3k R342 ERJ3GEYJ181 180 R343 ERJ3GEYJ102 1k CAPACITORS C300 ECUV1C104ZFV 0 1 C302 ECEA0JKS101 100 S C303 ECUV1H102KBV 0 001 C304 ECUV1H101JCV 0 001 Ref No Part No Part Name Description Remarks C305 ECUV1H331JCV 330P C306 ECUV1H331JCV 330P C307 ECUV...

Page 254: ...DHDD000026 TRANSISTOR SI Q402 2SB1322 TRANSISTOR SI Q403 PQVTDTC143E TRANSISTOR SI S Q405 PQVTDTC144TU TRANSISTOR SI S IC401 B1HAGFF00015 TRANSISTOR SI DIODES D401 PFVDRMRLS245 DIODE SI S D402 B0BA7R900004 DIODE SI D403 B0BA7R900004 DIODE SI CONNECTORS CN402 PQJS11A10Z CONNECTOR 11 PIN S CN403 PQJS10A10Z CONNECTOR 10 PIN S Ref No Part No Part Name Description Remarks CN404 K1KA11A00158 CONNECTOR 1...

Page 255: ...133 LED LED10 B3ACB0000134 LED COILS L1 G1C470M00025 COIL L4 G1C100MA0072 COIL L5 G1C100MA0072 COIL L7 J0JCC0000275 COIL F1 PQLQR2M5N6K COIL S CONNECTOR AND JACK CN3 K1MY20BA0112 CONNECTOR CN4 K2HD103D0001 JACK LCR FILTERS L8 J0JCC0000286 LCR FILTER L9 J0JCC0000286 LCR FILTER L12 J0JCC0000286 LCR FILTER R31 J0JCC0000286 LCR FILTER RESISTORS R1 ERJ6RSJR10V 0 1 R2 ERJ3GEYJ680 68 R5 ERJ2GEJ471 470 R6...

Page 256: ...05 ECJ0EC1H101J 100P C106 ECJ0EC1H101J 100P C107 ECJ0EC1H101J 100P C108 ECJ0EB1H102K 0 001 C110 ECUV1H331JCV 330P C112 ECJ0EB1H102K 0 001 C113 ECJ0EB1H102K 0 001 C114 ECJ0EB1H102K 0 001 C115 ECJ0EC1H100D 10P OTHERS E301 PQLP10276Z LIQUID CRYSTAL DISPLAY E302 PQHX11300Z PLASTIC PARTS PET SHEET E303 PQSA10197Z ANTENNA IC4 PQLP10263Z RF UNIT MIC L0CBAB000052 MICROPHONE D8 D4ED1270A014 VARISTOR X1 H0D...

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