Panasonic KX-FC971CX-S Page 44 Service Manual Download

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7 TROUBLESHOOTING GUIDE

7.1. TROUBLESHOOTING SUMMARY

7.1.1. TROUBLESHOOTING

After confirming the problem by asking the user, troubleshoot according to the instructions and observe the following
precautions.

7.1.2. PRECAUTIONS

1. If there is a problem with the print quality or the paper feed, first check if the installation space and the print paper meets the

specifications, the paper selection lever/paper thickness lever is set correctly, and the paper is set correctly without any slack.

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 and checking the operation, exercise utmost care when handling electric

parts in order to avoid electric shocks and short-circuits.

4. After troubleshooting, double check that you have not forgotten any connectors, left any loose screws, etc.

5. Always test to verify that the unit is working normally.

KX-FC971CX-S / KX-FGA521CX-S

Summary of Contents for KX-FC971CX-S

Page 1: ...RMATION ABOUT LEAD FREE PbF SOLDERING If lead free solder was used in the manufacture of this product the printed circuit boards will be marked PbF Standard leaded Pb solder can be used as usual on boards without the PbF mark When this mark does appear please read and follow the special instructions described in this manual on the use of PbF and how it might be permissible to use Pb solder during ...

Page 2: ...THE CORDLESS HANDSET RECEIVER 125 8 CIRCUIT OPERATIONS 126 8 1 CONNECTION DIAGRAM 126 8 2 GENERAL BLOCK DIAGRAM 127 8 3 CONTROL Facsimile SECTION 130 8 4 FACSIMILE SECTION 136 8 5 SENSORS AND SWITCHES 149 8 6 MODEM SECTION 153 8 7 NCU SECTION 160 8 8 Transmitter Receiver Cordless 163 8 9 OPERATION BOARD SECTION 164 8 10 LCD SECTION 165 8 11 POWER SUPPLY BOARD SECTION 166 8 12 CORDLESS SECTION BASE...

Page 3: ... THE SCHEMATIC DIAGRAMS 210 17 SCHEMATIC DIAGRAM 211 17 1 ANALOG BOARD 211 17 2 DIGITAL BOARD 213 17 3 OPERATION BOARD 216 17 4 POWER SUPPLY BOARD 217 17 5 CORDLESS HANDSET BOARD 218 17 6 CHARGER UNIT BOARD 220 3 KX FC971CX S KX FGA521CX S ...

Page 4: ... careful not to heat too long PbF solder will tend to splash if it is heated much higher than its melting point approximately 1100 F 600 C If you must use Pb solder on a PCB manufactured using PbF solder remove as much of the original PbF solder as possible and be sure that any remaining is melted prior to applying the Pb solder When applying PbF solder to double layered boards please check the co...

Page 5: ... SOLDER IS USED P C Boards marked as PbF use Pb Free solder See the figure below Example Digital board Note The PbF marked may be found on different areas of the same P C Board depending on manufacture date 5 KX FC971CX S KX FGA521CX S ...

Page 6: ...e 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 1 5 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 f...

Page 7: ...ECAUTIONS 1 8 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 A gear rotates the two rollers Be careful not to touch them with your hands especia...

Page 8: ...g the AC power cord before disassembling for service 1 9 SERVICE PRECAUTIONS 1 9 1 PRECAUTIONS TO PREVENT DAMAGE FROM STATIC ELECTRICITY Electrical charges accumulate on a person For instance clothes rubbing together can damage electric elements or change their electrical characteristics In order to prevent static electricity touch a metallic part that is grounded to release the static electricity...

Page 9: ... identification services and compatible equipment must be used by both telephone companies Feature not available when the unit is connected to a PBX system Enhanced Copier Function 64 Level halftone 2 FEATURES AND SPECIFICATIONS 2 1 FEATURES 2 2 OPTIONAL ACCESSORIES Model No Item Specifications Usage KX A106 Standard thermal recording paper 1 216 mm 30 m roll with 25 mm core HHR P106 Rechargeable ...

Page 10: ...ity 3 Approx 28 pages memory reception Based on the ITU T No 1 Test Chart in standard resolution with original mode Voice Memory Capacity 4 Approx 15 minutes of recording time 1 Transmission speed depends upon the contents of the pages resolution telephone line conditions and capability of the other party s machine 2 Transmission speed is based upon the ITU T No 1 Test Chart with original mode If ...

Page 11: ...Note Design and specifications are subject to change without notice The pictures and illustrations in these instructions may vary slightly from the actual product 11 KX FC971CX S KX FGA521CX S ...

Page 12: ...uctions 4 Document feeder tray 5 Antenna 6 Top cover 7 Document exit 8 Document entrance 9 Top cover release button 1 Speaker 2 Antenna 3 Charge contacts 4 Battery cover 5 Voice select button To select the tone quality of the receiver 3 LOCATION 3 1 Overview 3 1 1 Base Unit 3 1 2 Cordless Handset 12 KX FC971CX S KX FGA521CX S ...

Page 13: ...uch dial feature 11 FAX START To start sending or receiving a fax 12 COPY To copy a document 13 TONE To change from pulse to tone temporarily during dialing when your line has rotary pulse services 14 PAUSE To insert a pause during dialing 15 MONITOR To initiate dialing without lifting the handset 16 INTERCOM To page or locate the handset 17 Navigator VOLUME PHONEBOOK To adjust volume To search fo...

Page 14: ...rvices or for transferring extension calls To erase a character number Press and hold to erase all characters numbers 7 Microphone The built in microphone 8 AUTO ANSWER EDIT To turn the auto answer setting ON OFF To edit the caller s phone number 9 OFF To stop an operation or programming session To hang up To stop viewing caller information 10 INTERCOM To page or locate the base unit or another co...

Page 15: ... Relative humidity 20 to 80 without condensation Power cord length should be less than 5 meters Using a longer cord may reduce the voltage or cause malfunctions Avoid direct sunlight Do not install near devices which contain magnets or generate magnetic fields Do not subject the unit to strong physical shock or vibration Keep the unit clean Dust accumulation can prevent the unit from functioning p...

Page 16: ...he power outlet should be near the product and easily accessible Be sure to use the telephone line cord included in this unit Do not extend the telephone line cord Keep the base unit away from walls as far as possible to prevent a recording paper jam Note Before you can make calls the dialing mode setting may need to be changed 4 2 2 Charger Unit 1 Hooks Fasten the AC adaptor cord to prevent it fr...

Page 17: ...s handset will not operate while it is on the charger Battery life After your Panasonic battery is fully charged you can expect the following performance Operation Operating Time While in use talking 7 hours approx While not in use standby 150 hours approx Times indicated are for peak performance Battery operating time may be shortened depending on usage conditions and ambient temperature Battery ...

Page 18: ... cover securely by pushing down on both sides 6 Press FAX START to cut the paper Note If the paper is secured with glue or tape cut approximately 15 cm from the beginning of the roll before installing it When the power cord is connected a message is printed each time the top cover is opened then closed If the recording paper is installed upside down the message will not be printed Install the pape...

Page 19: ...ly charged paper Badly curled creased or torn paper Paper with a coated surface Paper with a faint image Paper with printing on the opposite side that can be seen through the other side such as newsprint Check that ink paste or correction fluid has dried completely To send a document with a width of less than 210 mm we recommend using a copy machine to copy the original document onto A4 or letter ...

Page 20: ... Panasonic battery See OPTIONAL ACCESSORIES P 9 Important Charge the new battery for about 10 hours before initial use Use only a rechargeable battery If you install a non rechargeable battery and start charging the battery may leak electrolyte 1 Press the notch on the cover firmly and slide it in the direction of the arrow 2 Unplug the connector then remove the old battery 3 Install the new batte...

Page 21: ...up to 30 characters See the following character table below for details 5 Press SET The next feature will be displayed 6 Press MENU To select characters with the base unit dial keypad Note To enter another character that is located on the same dial key press to move the cursor to the next space To enter your logo Example BILL 1 Press 2 2 times 2 Press 4 3 times 3 Press 5 3 times 4 Press to move th...

Page 22: ...ase all characters press and hold STOP 3 Enter the correct character To select characters using or Instead of pressing the dial keys you can select characters using or 1 Press repeatedly to display the desired character Characters will be displayed in the following order 1 Uppercase letters 2 Number 3 Symbol 4 Lowercase letters If you press the order will be reversed 2 Press to insert the characte...

Page 23: ...ation 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 troubleshooting 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 completing the re...

Page 24: ...ENT LOCATIONS P 23 and HOW TO REMOVE THE ANALOG BOARD DIGITAL BOARD POWER SUPPLY BOARD AND POWER CORD P 37 6 Glass If the glass is dirty clean them with a dry soft cloth Refer to DOCUMENT FEEDER SCANNER GLASS CLEANING P 26 7 Abnormal wear and tear or loose parts Replace the part Check if the screws are tight on all parts 5 1 4 MAINTENANCE CYCLE No Item Cleaning Cycle Replacement Cycle Procedure 1 ...

Page 25: ...er and close the top cover securely by pushing down on both sides Refer to RECORDING PAPER P 18 5 2 2 Document Jams Sending 1 Open the top cover by pressing the top cover release button 1 and remove the jammed document carefully 2 2 Close the top cover securely by pushing down on both sides Note Do not pull out the jammed paper forcibly before opening top cover 5 2 JAMS 5 2 1 Recording Paper Jams ...

Page 26: ...e cord 5 Close the top cover securely by pushing down on both sides 5 2 4 THERMAL HEAD CLEANING If smudges or black white lines appear on a copied received document check whether there is dust on the thermal head Clean it to remove the dust 1 Disconnect the power cord and the telephone line cord 2 Open the top cover by pressing the top cover release button 1 and remove the recording paper 3 Clean ...

Page 27: ...NCE HOW TO REMOVE THE PAPER STACKER P 29 HOW TO REMOVE THE OPERATION PANEL BLOCK P 30 HOW TO REMOVE THE OPERATION BOARD LCD MICROPHONE UNIT and PLATEN ROLLER P 31 HOW TO REMOVE THE IMAGE SENSOR CIS AND FEED ROLLER P 33 HOW TO REMOVE THE ANTENNA AND CUTTER UNIT P 34 27 KX FC971CX S KX FGA521CX S ...

Page 28: ...BOARD POWER SUPPLY BOARD AND POWER CORD P 37 HOW TO REMOVE THE GEAR BLOCK AND SEPARATION ROLLER P 38 HOW TO REMOVE THE MOTOR OF GEAR BLOCK P 33 6 1 3 CORDLESS HANDSET SECTION CROSS REFERENCE HOW TO REMOVE THE BATTERY COVER AND CABINET COVER P 40 HOW TO REMOVE THE CORDLESS HANDSET BOARD P 43 28 KX FC971CX S KX FGA521CX S ...

Page 29: ...6 2 BASE UNIT 6 2 1 HOW TO REMOVE THE PAPER STACKER 29 KX FC971CX S KX FGA521CX S ...

Page 30: ...6 2 2 HOW TO REMOVE THE OPERATION PANEL BLOCK 30 KX FC971CX S KX FGA521CX S ...

Page 31: ...6 2 3 HOW TO REMOVE THE OPERATION BOARD LCD MICROPHONE UNIT and PLATEN ROLLER 31 KX FC971CX S KX FGA521CX S ...

Page 32: ...6 2 4 HOW TO REMOVE THE SEPARATION HOLDER AND DOCUMENT FEED SUPPORT 32 KX FC971CX S KX FGA521CX S ...

Page 33: ...6 2 5 HOW TO REMOVE THE IMAGE SENSOR CIS AND FEED ROLLER 33 KX FC971CX S KX FGA521CX S ...

Page 34: ...6 2 6 HOW TO REMOVE THE ANTENNA AND CUTTER UNIT 34 KX FC971CX S KX FGA521CX S ...

Page 35: ...6 2 7 HOW TO REMOVE THE LOCK LEVER AND THERMAL HEAD 35 KX FC971CX S KX FGA521CX S ...

Page 36: ...6 2 8 HOW TO REMOVE THE BOTTOM FRAME 36 KX FC971CX S KX FGA521CX S ...

Page 37: ...6 2 9 HOW TO REMOVE THE ANALOG BOARD DIGITAL BOARD POWER SUPPLY BOARD AND POWER CORD 37 KX FC971CX S KX FGA521CX S ...

Page 38: ...6 2 10 HOW TO REMOVE THE GEAR BLOCK AND SEPARATION ROLLER 6 2 11 HOW TO REMOVE THE MOTOR OF GEAR BLOCK 38 KX FC971CX S KX FGA521CX S ...

Page 39: ...6 2 12 INSTALLATION POSITION OF THE LEAD WIRES 39 KX FC971CX S KX FGA521CX S ...

Page 40: ...6 3 CORDLESS HANDSET 6 3 1 HOW TO REMOVE THE BATTERY COVER AND CABINET COVER 40 KX FC971CX S KX FGA521CX S ...

Page 41: ...41 KX FC971CX S KX FGA521CX S ...

Page 42: ...42 KX FC971CX S KX FGA521CX S ...

Page 43: ...6 3 2 HOW TO REMOVE THE CORDLESS HANDSET BOARD 43 KX FC971CX S KX FGA521CX S ...

Page 44: ...ness 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 and checking the operation exercise utmost care when handling electric parts in order to avoid electric shocks and s...

Page 45: ...splayed message instructions to print out the document For fax memory capacity Refer to SPECIFICATIONS P 10 The memory is full of received documents due to lack of recording paper or a recording paper jam Install paper or clear the jammed paper Refer to RECORDING PAPER P 18 and Recording Paper Jams P 25 When performing broadcast transmission the document being stored exceeded the memory capacity o...

Page 46: ... to eject the jammed document There is something wrong with the unit and the base unit will not work To make or receive calls use the cordless handset The system is busy Replace the handset or stop using speakerphone then try again A transmission error occurred Try again The unit is too hot Stop using the unit for a while and let the unit cool down 46 KX FC971CX S KX FGA521CX S ...

Page 47: ... 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 Service 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 Functions are accessed by entering their cod...

Page 48: ...an check See TEST FUNCTIONS P 50 556 Motor test 0 See TEST FUNCTIONS P 50 557 LED test See TEST FUNCTIONS P 50 558 LCD test See TEST FUNCTIONS P 50 559 Document jam detection select 1 ON 2 OFF 1 2 1 See TEST FUNCTIONS P 50 561 KEY test See TEST FUNCTIONS P 50 562 Cutter test Press SET key 570 BREAK select 1 61 2 67 1 2 1 Sets the break of pulse dialing according PBX 571 ITS auto redial time set X ...

Page 49: ... Sets the CPC signal detection mode from the converter 745 Power ON film feed 1 ON 2 OFF 1 2 1 Invalid function for thermal model 763 CNG detect time for friendly reception 1 10 sec 2 20 sec 3 30 sec 1 3 3 Selects the CNG detection tone of friendly reception 771 T1 timer 1 35 sec 2 60 sec 1 2 2 Sets a higher value when the response from the other party needs more time during FAX transmission 774 T...

Page 50: ...LCD indication Illuminates all the dots to check if they are normal Refer to OPERATION PANEL SECTION P 104 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 BUTTON CODE TABLE P 51 Refer to OPERATION PANEL SECTION P 104 START any key MEMORY CLEAR except History data Service Mode 7 1 0 Refer to Memory Clear Specific...

Page 51: ... performing this check do not forget to turn the setting off Otherwise dialing in DTMF signal will not work 7 4 2 BUTTON CODE TABLE Code Button Name Code Button Name Code Button Name 04 FAX START 32 2 47 CALLER ID 05 LOWER 33 3 64 STATION 1 06 COPY 34 4 65 STATION 2 08 MONITOR 35 5 66 STATION 3 0C AUTO ANSWER 36 6 67 STATION 4 0F REDIAL 37 7 68 STATION 5 14 RECORD 38 8 1E NEXT 16 ERASE 39 9 1F PRE...

Page 52: ...d 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 52 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 during the remote program...

Page 53: ...y TAM FAX OK 080 Set default YES NO NO NG 501 Pause time 1 SHORT 3S 2 LONG 5S SHORT 3S OK 502 Flash time 1 TYPE1 2 TYPE2 3 TYPE3 TYPE2 OK 511 Vox sense 1 High 2 Low High OK 514 Bell detection time 10 90 x 10ms 60 OK 520 CED frequency select 1 2100Hz 2 1100Hz 2100Hz OK 521 International mode select 1 ON 2 OFF ON OK 522 Auto standby select 1 ON 2 OFF ON OK 523 Receive equalizer select 1 0km 2 1 8km ...

Page 54: ... pattern NG 853 Top margin 1 9 mm 5 OK 874 DTMF ON time 6 20 10ms 10 10ms OK 875 DTMF OFF time 6 20 10ms 10 10ms OK 880 History list 1 Start NG 881 Journal 2 1 SET NG 882 Journal 3 1 SET NG 991 Setup list 1 Start OK 994 Journal list 1 Start OK 995 Journal 2 list 1 Start OK 996 Journal 3 list 1 Start OK 998 History list 1 Start OK 999 Service list 1 Start OK OK means can set NG means can not set No...

Page 55: ...Note The above values are the default values 7 6 THE EXAMPLE OF THE PRINTED LIST 7 6 1 USER MODE Example of a printed out list 55 KX FC971CX S KX FGA521CX S ...

Page 56: ...Note The above values are the default values 7 6 2 SERVICE MODE SETTINGS Example of a printed out list 56 KX FC971CX S KX FGA521CX S ...

Page 57: ...STORY Example of a printed out list 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 58 57 KX FC971CX S KX FGA521CX S ...

Page 58: ... 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 Used 30 NUMBER OF PRINTING WARNING LIST The number of warning lists...

Page 59: ...ons 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 61 Difficult problems may be hard to determine so repeated testing is necessar...

Page 60: ...t the journal report P 79 Error code is displayed See How to output the journal report P 79 cannot talk See ANALOG BOARD SECTION P 99 DTMF tone doesn t work Hndset Monitor sound volume Operation panel Keys are not accepted See OPERATION PANEL SECTION P 104 Sensor If the electric circuit is the cause the error message corresponding to the sensor will be displayed See SENSOR SECTION P 105 Cordless N...

Page 61: ... Service code 557 Refer to TEST FUNCTIONS P 50 LCD check OK NG Service code 558 Refer to TEST FUNCTIONS P 50 Sensor Sensor check OK NG Service code 815 Refer to TEST FUNCTIONS P 50 Clock Time goes by 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 code 784 Refer to TEST FUNC...

Page 62: ...UMENT FEED SECTION 7 7 4 1 NO DOCUMENT FEED CROSS REFERENCE TEST FUNCTIONS P 50 DIGITAL BOARD SECTION P 92 SENSOR SECTION P 105 POWER SUPPLY BOARD SECTION P 101 DISASSEMBLY INSTRUCTIONS P 27 62 KX FC971CX S KX FGA521CX S ...

Page 63: ...7 7 4 2 DOCUMENT JAM CROSS REFERENCE SENSOR SECTION P 105 DISASSEMBLY INSTRUCTIONS P 27 63 KX FC971CX S KX FGA521CX S ...

Page 64: ...7 7 4 3 MULTIPLE FEED When using thick paper etc If the document will not feed CROSS REFERENCE DISASSEMBLY INSTRUCTIONS P 27 64 KX FC971CX S KX FGA521CX S ...

Page 65: ...7 7 4 4 SKEW CROSS REFERENCE DISASSEMBLY INSTRUCTIONS P 27 HOW TO REMOVE THE SEPARATION HOLDER AND DOCUMENT FEED SUPPORT P 32 65 KX FC971CX S KX FGA521CX S ...

Page 66: ...7 7 4 5 IMAGE IS DISTORTED WHEN PRINTING CROSS REFERENCE THERMAL HEAD SECTION P 107 TEST FUNCTIONS P 50 DISASSEMBLY INSTRUCTIONS P 27 66 KX FC971CX S KX FGA521CX S ...

Page 67: ...7 7 4 6 BLACK OR WHITE VERTICAL LINES APPEAR CROSS REFERENCE TEST FUNCTIONS P 50 DIGITAL BOARD SECTION P 92 7 7 4 7 SKEWED RECEIVING IMAGE 67 KX FC971CX S KX FGA521CX S ...

Page 68: ...7 7 4 8 WHEN COPYING OR PRINTING AN ABNORMAL SOUND IS HEARD FROM THE UNIT 68 KX FC971CX S KX FGA521CX S ...

Page 69: ...CROSS REFERENCE DISASSEMBLY INSTRUCTIONS P 27 69 KX FC971CX S KX FGA521CX S ...

Page 70: ...fails The unit can copy documents Troubleshooting 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 Troubleshooting Problem with the electric circuit 5 The fax fails either to transmit or receive when making a long distance or an international call The unit can copy documents Detailed description of the possibl...

Page 71: ...7 7 5 1 Defective Facsimile Section 7 7 5 1 1 Transmit Problem CROSS REFERENCE MAINTENANCE P 23 ADF AUTO DOCUMENT FEED SECTION P 62 OPERATION PANEL SECTION P 104 71 KX FC971CX S KX FGA521CX S ...

Page 72: ...7 7 5 1 2 Sometime there is a transmit problem Note 596 Transmit level set represents a service code Refer to SERVICE FUNCTION TABLE P 48 72 KX FC971CX S KX FGA521CX S ...

Page 73: ...en the fax switches to the memory receiving mode and the memory capacity becomes full of the unprintable data In this case error messages 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 indicating the error causes are shown below CHECK PAPER ...

Page 74: ...7 7 5 1 4 The unit can copy but cannot transmit receive CROSS REFERENCE ANALOG BOARD SECTION P 99 TEST FUNCTIONS P 50 74 KX FC971CX S KX FGA521CX S ...

Page 75: ...y 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 via station 1 echo As t...

Page 76: ...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 select 3 Sending side C...

Page 77: ...reception image are incorrect Long distance or international communication operation This symptom highly depends on the transmission and reception capability of the 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 mor...

Page 78: ...X SIGNAL RECORDING JIG 3 Connecting PC and JIG 4 PC setting and recording 1 Set LINE IN to be valid in the volume 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 t...

Page 79: ...RCV Reception is finished when the T1 TIMER expires 9 54 ERROR NOT YOUR UNIT RCV DCN is received after DIS transmission 11 58 COMMUNICATION ERROR RCV DCN is received after FTT transmission 13 59 ERROR NOT YOUR UNIT SND DCN responds to the post message 14 64 COMMUNICATION ERROR POL RX Polling is not possible 15 65 COMMUNICATION ERROR SND DCN is received before DIS reception 2 65 COMMUNICATION ERROR...

Page 80: ...80 KX FC971CX S KX FGA521CX S ...

Page 81: ...CROSS REFERENCE TEST FUNCTIONS P 50 81 KX FC971CX S KX FGA521CX S ...

Page 82: ...CROSS REFERENCE TEST FUNCTIONS P 50 82 KX FC971CX S KX FGA521CX S ...

Page 83: ...CROSS REFERENCE TEST FUNCTIONS P 50 83 KX FC971CX S KX FGA521CX S ...

Page 84: ...CROSS REFERENCE TEST FUNCTIONS P 50 84 KX FC971CX S KX FGA521CX S ...

Page 85: ...85 KX FC971CX S KX FGA521CX S ...

Page 86: ...86 KX FC971CX S KX FGA521CX S ...

Page 87: ...CROSS REFERENCE TEST FUNCTIONS P 50 87 KX FC971CX S KX FGA521CX S ...

Page 88: ... about a communication but the other two journal reports provide different information 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 RESOLUTION standard ENCOD...

Page 89: ...dly signal detection 4 VOX Means the unit detected silence or no voice 5 RMT DTMF Means the unit detected DTMF Remote Fax activation code entered remotely 6 PAL DTMF Means the unit detected DTMF Remote Fax activation code entered by a parallel connected telephone 7 TURN ON Means the unit started to receive after 20 rings Remote Turn On Service Code 573 8 TIME OUT Means the unit started to receive ...

Page 90: ...y 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 7 7 5 2 2 Journal 3 Refer to JOURNAL 3 in Printout Example P 90 Descriptions 7 7 5 2 3 Printout Example 90 KX FC971CX S KX FGA521CX S ...

Page 91: ...91 KX FC971CX S KX FGA521CX S ...

Page 92: ...e 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 soldering 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 or IC malfunction by chec...

Page 93: ...cts both systems Each system includes own Flash Memory for software program Flash memory IC23 in the BBIC system is for both software and voice data of TAM functions message REC PLAY voice prompt EEPROM IC22 in the BBIC sysytem is for software parameter for CDL Telephone and TAM functions Flash memory IC16 in the ASIC system is for software and also for user memory settings Phone book CID memory D...

Page 94: ... SYSTEM After RESET is released CPU starts reading the DATA software program from Flash memory CPU reads the data when RD and ROMCS are active low Waveform 1 shows such a situation 94 KX FC971CX S KX FGA521CX S ...

Page 95: ...7 7 6 2 CHECK THE STATUS OF THE DIGITAL BOARD I O and Pin No Diagram 95 KX FC971CX S KX FGA521CX S ...

Page 96: ... 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 CROSS REFERENCE NG Example P 98 POWER SUPPLY BOARD SECTION P 101 96 KX FC971CX S KX FGA521CX S ...

Page 97: ...Other NG example while the power is ON and the LCD displays the following 97 KX FC971CX S KX FGA521CX S ...

Page 98: ...7 7 6 3 NG Example 98 KX FC971CX S KX FGA521CX S ...

Page 99: ...l 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 SP PHONE trace that signal route locally with the following Check Sheet and locate the faulty point 7 7 7 1 Check She...

Page 100: ...rphone and no monitor reception Perform a signal test in the FAX NCU section and locate a defective point where the signal disappears on each route between the microphone and the telephone line sending or between the telephone line and the speaker receiving Check the components at that point Check Sheet for Signal Route P 99 is useful for this investigation 2 No pulse dialing 100 KX FC971CX S KX F...

Page 101: ...nding 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 rather than the secondary ...

Page 102: ...7 7 8 2 Troubleshooting Flow Chart 102 KX FC971CX S KX FGA521CX S ...

Page 103: ...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 R128 R109 D109 and IC101 You should change all of the parts listed as follows F101 Q101 R128 R109 D109 IC101 D201 If D201 is broken the oscillation circuit in the power supply cannot operate Check it with an ...

Page 104: ...7 7 9 OPERATION PANEL SECTION 7 7 9 1 No Key Operation CROSS REFERENCE TEST FUNCTIONS P 50 7 7 9 2 No LCD Indication CROSS REFERENCE TEST FUNCTIONS P 50 104 KX FC971CX S KX FGA521CX S ...

Page 105: ...NSOR SECTION Refer to SENSORS AND SWITCHES for the circuit descriptions 7 7 10 1 CHECK THE DOCUMENT SENSOR SW39 CHECK DOCUMENT 7 7 10 2 CHECK THE READ POSITION SW38 REMOVE DOCUMENT 105 KX FC971CX S KX FGA521CX S ...

Page 106: ...7 7 11 CIS Contact Image Sensor SECTION Refer to SCANNING BLOCK P 140 CROSS REFERENCE TEST FUNCTIONS P 50 106 KX FC971CX S KX FGA521CX S ...

Page 107: ...7 7 12 THERMAL HEAD SECTION Refer to THERMAL HEAD P 138 107 KX FC971CX S KX FGA521CX S ...

Page 108: ...3 Cordless Section 7 7 13 1 Check Power of Cordless Handset Note BBIC is IC1 7 7 13 2 Check Battery Charge 7 7 13 2 1 Cordless Handset Note BBIC is IC1 7 7 13 2 2 Charger Unit 108 KX FC971CX S KX FGA521CX S ...

Page 109: ...7 7 13 3 Check Link 7 7 13 3 1 Base Unit Analog Board 7 7 13 3 2 Cordless Handset 109 KX FC971CX S KX FGA521CX S ...

Page 110: ...Cordless Handset Transmission 7 7 13 5 Check Cordless Handset Reception 7 7 13 6 Check Curl Cord Handset Transmission 7 7 13 7 Check Curl Cord Handset Reception 7 7 13 8 Check Caller ID 110 KX FC971CX S KX FGA521CX S ...

Page 111: ...7 7 13 9 Bell Reception 7 7 13 9 1 Cordless Handset Note BBIC is IC900 7 7 13 10 Check DTMF Dial 111 KX FC971CX S KX FGA521CX S ...

Page 112: ... or BBIC or X tal adjustment is necessary This supplement will explain further details for adjustment 2 Settings of Board at pins of CN2 on the back side of FC971 FC972 FC973 digital board Please connect the component and the cable as follows Refer to Flow Solder Side View P 123 1 10k resistor please put it between 1pin and 2pin and connect TX cable from PC ERDS2TJ103T or ERDS1TJ103T 2 1k resistor...

Page 113: ...e to address 0010 input 00 10 3rd data length example if you want to write 2 datas from address input 2 4th data example if you want to write datas 01 from address input 01 eeprom_fc_init initialize EEPROM default vales are written to EEPROM getver get Version of BBIC software you can check Version conttx output RF CLK continuously 5 How to adjust 5 1 in case of EEPROM replacement 5 2 in case of B...

Page 114: ...F unit Please connect a Digital multimeter to 1 8V_A or 1 8V_B point on the Digital Board located near the BBIC 6 2 Frequency adjustment 6 3 Voltage adjustment Note 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 114 KX FC971CX S KX FGA521CX S ...

Page 115: ...K 15 16 J6 BBRST R248 24 IC24 R324 C230 DGa C212 C244 ANT M ANT S C245 DA2 ANT1 ANT2 C140 3 45V L23 L25 L24 R256 1 2 R243 1 24 X5 BTXON 48 3 0Va 25 R244 WHITE R204 R203 C225 CN2 2 R296 C221 C122 R97 C212 IC23 R98 C220 C223 C224 R245 14 14 15 28 1 Q21 6Va 8 5 R170 L17 R162 R174 R138 D13 CN6 Q10 R117 D12 CN5 1 11 IC11 16 9 Q14 5 1 1 8 CN8 CN9 C185 R175 R176 Q9 C153 R202 32 7 C178 1 5 3 4 SYSRSTa 3 3...

Page 116: ... 39 64 65 IC4 102 C67 C68 R302 R303 C278 R62 C78 J9 E C279 R337 R57 C75 C59 C277 R49 103 38 1 128 C91 AG 6V R19 D3 R20 C21 C22 C20 R22 C308 D4 R232 C71 L32 Q7 IC27 5 8 4 1 R304 R330 R329 C300 R332 R298 C276 C282 R301 R334 R331 R333 C299 C302 R58 L30 C296 C297 R18 E Q23 R263 C248 R262 C247 C30 C32 C17 C18 R17 C19 R21 C293 C23 C26 C29 R23 L7 MFCS C46 CE1 DB7 DB6 DB4 DB2 DB0 DB5 DB3 DB1 CE2 C169 R37 ...

Page 117: ... PC 1 2 PFZZFC533CN Batch Files it s executed on PC 1 3 PC input a command for adjustment 1 4 Frequcency Counter it s to adjust frequncy 10 368000MHz of BBIC it requires an accuracy that can measure 1Hz precise 1ppm 1 5 Digital multimeter it s to adjust voltage 1 8V of BBIC 2 Settings of Board and connecting CN2 back side of FC972 cordless handset board Please connect the component and the cable a...

Page 118: ...rite datas 01 from address input 01 eeprom_fcpp_init initialize EEPROM default vales are written to EEPROM getver get Version of BBIC software you can check Version conttx output RF CLK continuously 5 How to adjust 5 1 in case of EEPROM replacement 5 2 in case of BBIC replacement When you replace BBIC you need to adjust Frequncy and Voltage Refer to 6 Frequncy and Voltage adjustment 5 3 in case of...

Page 119: ...ment 6 3 Voltage adjustment Note 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 119 KX FC971CX S KX FGA521CX S ...

Page 120: ... at TP911 and TP912 6 Confirm that the level is 14dBm 5dB and confirm that the distortion level is 5 at Receiver Volume Middle 150Ω Road MIC ROUTE R1025 R1026 R940 R942 C904 R941 R943 C933 C934 R936 R937 C929 C928 IC900 RECEIVER ROUTE IC907 C972 R908 R911 C993 R1033 IC900 C914 C915 S SP phone Audio check and confirmation 1 Link to Base Unit 2 let ringer be sounded by pushing volume key lower direc...

Page 121: ... R958 C957 TP_ANT R957 C958 C961 C959 R962 IC905 FSC 40 41 61 2 5V 1 80 20 21 IC900 60 E X900 RFCLK 15 16 24 25 30 1 9 10 C963 E Q910 Q909 SW900 E Q919 Q906 Q905 E PbF PFUP1506ZA RED BLACK RED BLACK ANT REF CH C995 D906 C938 C994 Q911 Q917 C1005 IC909 Q915 E Q901 E E Q918 IC903 GND GND URX RX yellow black red UTX TX MIC MIC Frequency Counter Multi Meter PC DC Power Supply Multi Meter Speaker 8Ω Mu...

Page 122: ... 40 2436 4800 41 2437 3440 42 2438 2080 43 2439 0720 44 2439 9360 45 2440 8000 46 2441 6640 47 2442 5280 48 2443 3920 49 2444 2560 50 2445 1200 51 2445 9840 52 2446 8480 53 2447 7120 54 2448 5760 55 2449 4400 56 2450 3040 57 2451 1680 58 2452 0320 59 2452 8960 60 2453 7600 61 2454 6240 62 2455 4880 63 2456 3520 64 2457 2160 Channel Frequency 65 2458 0800 66 2458 9440 67 2459 8080 68 2460 6720 69 2...

Page 123: ...ster between charge and charge 2 Measure and confirm voltage across the regigster is 3 9V 0 3V Q1 D1 Q2 R1 R2 L1 L2 C1 C2 Note After the measuring sock up the solder of TP The connection of adjustment equipment are as shown in Flow Solder Side View P 123 7 10 2 Flow Solder Side View D1 R2 R1 Q2 Q1 L2 L1 C5 C4 C2 C1 PFUP1344Z PbF 123 KX FC971CX S KX FGA521CX S ...

Page 124: ... TX Power 17 dBm 19 dBm Adjustment Cordless Handset BBIC Clock 10 Hz 10 Hz Adjustment Cordless Handset Refer to Adjustment Cordless Handset P 120 7 12 HOW TO CHECK THE CORDLESS HANDSET AND BASE UNIT SPEAKER 1 Prepare the digital voltmeter and set the selector knob to ohm meter 2 Put the probes at the speaker terminals as shown below 124 KX FC971CX S KX FGA521CX S ...

Page 125: ...3 HOW TO CHECK THE CORDLESS HANDSET RECEIVER 1 Prepare the digital voltmeter and set the selector knob to ohm meter 2 Put the probes at the receiver terminals as shown below 125 KX FC971CX S KX FGA521CX S ...

Page 126: ...8 CIRCUIT OPERATIONS 8 1 CONNECTION DIAGRAM 126 KX FC971CX S KX FGA521CX S ...

Page 127: ...ins 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 tone sidetone r...

Page 128: ...Supplies 5V 8V and 24V to the unit 128 KX FC971CX S KX FGA521CX S ...

Page 129: ...PROM 32K IC3 MODEM BOA RX ASIC PFVIM66445M1 IC4 BBIC SC14429A IC11 MOTOR DRV MOTOR RESET IC24 RF IC10 6V 24V KEY MATRIX SENSOR GATE ARRAY LCD PANEL 2Line MESSAGE SENSOR ANALOG BOARD PC814 SENSOR BELL Transformer Relay LINE NCY CONTROL Charger EXT TLP320 CPC RLY 24V CIS 2strobe 3 3V chip REG REG 6V 5V REG 5VA 3 45V Speaker Amp 10 368MHz ANT ANT SPMUTE SP 32 256MHz 32 768MHz 24MHz 5V 5V 24V THERMAL ...

Page 130: ...feeds the document 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 11 ANALOGUE UNIT Electronic volume for the monitor Sends beep tones etc 8 3 CONTROL Facsimile SECTION 8 3 1 ASIC IC10 Note This memory is incorporated into the ASIC IC10 and used for the image processing Fig A shows the memory ma...

Page 131: ...OP32 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 MILAT IOP47 IOP INPUT NISHI1 I 42 20KOSC IOP56 IOP INPUT CCONT O 44 XHSTRD IOP40 IOP INPUT MURA1 O 45 XHSTWR IOP41 IOP INPUT TX2 2 O 62 XRAS IOP42 IOP INPUT RAS O 63 XCAS1 IOP43 IOP INPUT CAS O 64 XCAS2 IOP44 IOP INPUT RCONT O 102 RBA6 IOP RB...

Page 132: ... 7 CHARGE INT7n General purpose I O port 160k pull down I_PD MURA1 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 HOLDAC Kn VDDE General purpose I O port selectable pullup O_1 SPMUT E O directly connect to SP AMP CD 62 P1 4 INT4n HOLDn General purpose I O port selectable pullup I_PU RSVIO I connect...

Page 133: ...E DIR Connection 48 P0 1 URX General purpose I O port input Data to UART pull down I URX I voltage convert with R R 3 3V 3 0V 47 P0 0 UTX General purpose I O port UART DATA output selectable pullup I_PU UTX O connect to ASIC UART RXD Connection to operation reset circuit 133 KX FC971CX S KX FGA521CX S ...

Page 134: ...tive reset pulse of 50 70 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 134 KX FC971CX S KX FGA521CX S ...

Page 135: ... 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 thermal head at an even temperature in order to stabilize the printing density and p...

Page 136: ...ored 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 items 1 3 2 The data st...

Page 137: ...8 4 2 BLOCK DIAGRAM 137 KX FC971CX S KX FGA521CX S ...

Page 138: ...increment 1728 all the shift registers become filled with data and a latch pulse is emitted to each IC from IC1 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 IC1 pins 103 105 only black dot locations 1 among latched data activates the driver and the current passes to heat the emitti...

Page 139: ...139 KX FC971CX S KX FGA521CX S ...

Page 140: ...rns on This applies voltage to the light source 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 light source undergoes photoelectric conversion to output an analogue image signal SIG The analogue image signal is input to the system ASIC on AIN1 pin 3 of IC10 and converted into 8 bit data by the A D converter in...

Page 141: ...go ON The motor coil is energized sequentially in 2 phase increments or 1 2 phase increments which causes a 1 step rotation A 1 step rotation is 0 13mm of recording paper or document paper The timing chart is below Stepping Motor Phase Pattern Function Mode Phase Pattern Speed Copy Fine Photo 1 2 432 pps Super Fine 1 2 216 pps FAX STD 2 432 pps Fine Photo 1 2 432 pps Super Fine 1 2 216 pps Paper F...

Page 142: ...n the motor attached to the Drive Motor Gear rotates counterclockwise CCW Swing Gear A engages the CAM and the CAM turns counterclockwise to select a mode See Fig A There are three mode options controlled by the Switch A Transmit mode B Receive mode and C Copy mode In Fig B you can see which mode is selected by the position of the rib in the CAM Fig A 142 KX FC971CX S KX FGA521CX S ...

Page 143: ...mode operation 8 4 6 2 1 TX Mode Swing Gear A engages Gear TX and conveys its drive power to the Separation Roller Gear for pre feeding documents Fig B TX mode 8 4 6 2 2 RX Mode Swing Gear B engages RX and conveys its drive power to the Platen Roller Gear for printing the received data Fig C RX mode 143 KX FC971CX S KX FGA521CX S ...

Page 144: ...and the Platen Roller Gear for feeding documents and recording paper in the copying operation Fig D Copy mode 8 4 6 2 4 Reverse Mode Swing gear D engages between swing gear B and gear RX and conveys its drive power to the platen roller gear for reversing the recording paper Fig E Reverse mode 144 KX FC971CX S KX FGA521CX S ...

Page 145: ...ter and conveys its drive power to cutter unit for cutting recording paper Fig F Cutter mode 8 4 6 3 MECHANICAL MOVEMENTS IN THE MAIN OPERATIONS 8 4 6 3 1 IDLE STATUS CROSS REFERENCE HOW TO REMOVE THE MOTOR OF GEAR BLOCK P 38 145 KX FC971CX S KX FGA521CX S ...

Page 146: ...8 4 6 3 2 SCANNING CROSS REFERENCE SENSOR SECTION P 105 146 KX FC971CX S KX FGA521CX S ...

Page 147: ...8 4 6 3 3 PRINTING Note See SENSORS AND SWITCHES P 149 147 KX FC971CX S KX FGA521CX S ...

Page 148: ...8 4 6 3 4 COPYING CROSS REFERENCE SENSOR SECTION P 105 148 KX FC971CX S KX FGA521CX S ...

Page 149: ...Name Error Message DIGITAL CN8 Motor Position CALL SERVICE 2 CN9 Cutter Position PAPER JAMED ANALOG SW501 Cover Open and Paper set CHECK COVER and OUT OF PAPER SW500 Hook SW SW502 JAM set PAPER JAMED Operation Panel SW38 Document Read Position REMOVE DOCUMENT SW39 Document set CHECK DOCUMENT 149 KX FC971CX S KX FGA521CX S ...

Page 150: ... Home position Low level Other High level 8 5 3 RECORDING PAPER SENSOR SW501 When there is no recording paper the plate is separated from the switch lever and the switch turns off Pin 45 of IC10 becomes a high level When there is recording paper the plate pushes the switch lever and the switch turns ON Pin 45 of IC10 becomes a low level Analog Board Signal IC10 45 Pin Paper Low level No paper High...

Page 151: ...8 5 5 JAM SENSOR SW502 The JAM sensor is a detection switch for determining whether the recording paper edge is in the correct position or not If the recording paper cannot be detected correctly at the JAM sensor position even when recording paper is present then JAM is displayed If the recording paper is at the sensor position then the switch turns on the IC10 119pin switches to a high level Anal...

Page 152: ... becomes a high level Operation Board Signal IC1 5 pin Out of the Read Position High level At the Read Position Low level 8 5 7 DOCUMENT SET SW SW1 When a document is set the SW becomes ON and input signal of IC1 6 pin Operation becomes a low level When there is no document the SW becomes OFF and the input signal of IC1 6 pin Operation becomes a high level Operation Board Signal IC1 6 pin No docum...

Page 153: ...ent 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 Determined in 1968 Transmission for about 6 minutes at a scanning line density of 3 85 lines m...

Page 154: ...ts 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 catalog etc Hold time This is...

Page 155: ... and the data signals added to them Data signals are added to DIS and DCS signals Signal DIS Digital Identification Signal Identification Signal Format 00000001 Function Notifies the capacity of the receiving unit The added data signals are as follows Signal DCS Digital Command Signal Identification Signal Format X1000001 Example Some models do not support the following items Bit No DIS DTC DCS 1 ...

Page 156: ...ility A4 297 mm Unlimited A4 297 mm and 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 ...

Page 157: ...is 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 initiates training once again Training 2 Us...

Page 158: ...b Redundancy Compression Process Coding Mode This unit uses one dimensional MH format 158 KX FC971CX S KX FGA521CX S ...

Page 159: ...m IC3 The signals that enter pin 60 of the modem IC3 are demodulated in the board to digital image signals then placed on the data bus In this case the image signals from the telephone line are transmitted serially Hence they are placed on the bus in 8 bit units Here the internal equalizer circuit reduces the image signals to a long distance receiving level This is designed to correct the characte...

Page 160: ...0 of BBIC IC4 on the digital board TEL LINE PC504 1 2 4 IC4 10 8 7 3 ON OFF HOOK CIRCUIT Normally ON HOOK condition LINE RELAY RL500 is OFF While OFF HOOK RL500 turns ON This LINE RELAY is controlled by pin 83 of IC4 through the Q505 ON HOOK IC4 83 Low Level Q505 OFF RL500 OFF OFF HOOK IC4 83 High Level Q505 ON RL500 ON 8 7 4 PULSE DIAL CIRCUIT Make state IC4 83 High Level Q505 ON RL500 ON Break s...

Page 161: ... the first and second rings of the bell signal The data from the telephone exchange is a modem signal which is modulated in an FSK Frequency Shift Keying format Data 0 is a 1300 Hz sine wave and data 1 a 2100 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 message format The multiple data format allows to transmit the...

Page 162: ...162 KX FC971CX S KX FGA521CX S ...

Page 163: ...rdless Base Unit and Cordless Handset mainly consist of RF Module and DECT BBIC Base Unit and Cordless Handset transmit receive voice signal and data signal through the antenna on carrier frequency 163 KX FC971CX S KX FGA521CX S ...

Page 164: ...by the Gate Array IC1 and ASIC IC10 on the DIGITAL BOARD The key matrix table is shown below CN1 CN206 IC10 ASIC Chip on board type LCD GATE ARRAY IC1 CN2 READ POSITION SENSOR DOCUMENT SENSOR 37 KEYS MATRIX LED DIGITAL BOARD OPERATION BOARD KX FC971CX S OPERATION BOARD BLOCK DIAGRAM XLED8 9 KIN0 8 XLED13 164 KX FC971CX S KX FGA521CX S ...

Page 165: ...5 R306 and R307 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 IC1 22pin H L LED15 IC1 21pin L L LED14 IC1 20pin Hi Z L X1 5 LED1 H H LED15 Hi Z L LED14 Hi Z Hi Z 165 KX FC971CX S KX FGA521CX S ...

Page 166: ...ge Wave Form C D Voltage Wave Form E F G H Voltage Wave Form 0 0 0 Block Diagram 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 Rectifier Circuit The input current is rectified by D101 D102 D103 and D104 and charges C106 to make DC voltage Then it supplies power to...

Page 167: ...oad 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 output voltage is stabilize...

Page 168: ...f 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 because the error detecting c...

Page 169: ...ltiple Access Time Division Duplex TDMA TDD scheme transmitting and receiving frequencies of the base unit and cordless handset are shared in the same frequency The construction of RX TX frequency data is shown below It consists of 6 slots from the base unit to the cordless handset and 6 slots from the cordless handset to the base unit total 12 slots in 10ms By this slot system simultaneous air li...

Page 170: ...and UpLink4 is different frequency UpLink3 and DownLink3 use the same frequency 2 Handsets Link Traffic Bearer A link is established between Base set and handset The state where duplex communication is performed The hopping pattern of a 75hops 0 75 seconds cycle Dummy Bearer The Base unit send Dummy data to the all stand by state Handsets The Handsets receive that data for keeping synchronization ...

Page 171: ... 19 RSSI 22 TXDA 23 RXDA 44 SDA2 45 SCL2 36 WP RF UNIT IC904 EEPROM IC905 LCD back light KEY LSRp LSRn MICn MICp SPEAKER RECEIVER MIC AMP AMP 67 66 68 72 BBIC IC900 KEY 0 4 STB 0 5 SCL1 10 SDA1 9 P2 2 77 stop charge 62 3 4 REG RST 3 4 REG 1 8V 2 5V 3 4VPA RF PWR 3 4VPA RF PWR 3 0 REG IC910 IC901 IC909 IC908 3 4VTR TR TR 171 KX FC971CX S KX FGA521CX S ...

Page 172: ...he Base Unit the charge current is approx 100mA In this way the BBIC on Cordless Handset detects the fact that the battery is charged The charge current is controlled by switching Q5 of Cordless Handset 8 13 5 Battery Low Power Down Detector Circuit Operation Battery Low and Power Down are detected by BBIC which check the voltage from battery The detected voltage is as follows Battery Low Battery ...

Page 173: ...5 D O AD15 O O Hi 30 AD16 D O AD16 O O Hi 31 AD17 D O AD17 O O Hi 32 AD18 D O AD18 O O Hi 33 AD19 D O AD19 O O Hi 34 AD20 D O AD20 O O Hi 35 AD21 D O AD21 O O Hi 36 AD22 D O AD22 O O Hi 37 AD23 D O AD23 O O Hi 38 LE D O LE O O Low 39 SO D O SO O O Low 40 SK D O SK O O Hi Z 41 DAC ADC2 A I ADC2 I I 42 P3 6 PD6 D O CE O O Hi Z 43 RDN D O RDN O O Hi 44 WRN D O WRN O O Hi 45 MI READY D O MI READY O I ...

Page 174: ...B15 D I O DAB15 I O I 93 TM D I TM I O Low 94 P2 7 SPIDO D O P2 7 O O Hi Z 95 P1 6 PON A I PON I I 96 P1 7 CHARGE D I P1 7 I I 97 P2 6 stop_charge D O P2 6 O O Low 98 VBAT3 RINGING A I RINGING I I 99 LINEREF A O LINEREF O 100 LINEOUT A O LINEOUT O 101 LINE_IN A I LINE_IN I 102 LINE_IN A I LINE_IN I 103 LDO1_Senes A I LDO1_Senes I I 104 LDO1_CTRL A O LDO1_CTRL O O Hi 105 LDO2_CTRL A O LDO2_CTRL O O...

Page 175: ...OL1 I O 29 PCM_FSC0 P0_4 D I COL2 I O 30 PCM_CLK P0_5 D I COL3 I O 31 PCM_DOUT P0_6 D I COL4 I O 32 PCM_DIN P0_7 D I COL5 I O 33 VDDIO 34 VSS 35 INT0n P1_0 D O ROW0 O O 36 INT1n P1_1 D O ROW1 O O 37 INT2n P1_2 D O ROW2 O O 38 INT3n P1_3 D O ROW3 O O 39 INT4n P1_4 D I MIDI_IRQ I O 40 VDDE INT5n P1_5 D O COL0 O 41 SCL2 P3_0 D O SCL O O 42 SDA2 D I O SDA I O O 43 VSS 44 VDD 45 P2_0 PWM0 D O PWM0 O O ...

Page 176: ... O O 70 LSR_HS CIDIN A O LSR_HS O O 71 VREF_HS CIDOUT A O NC OPEN 72 MIC A I I O 73 VREF A O O O 74 VBUF A O O O 75 AGND A O O O 76 MIC A I I O 77 VREF CIDIN A O VREF O O 78 RSTN D I I O 79 VDDIO 80 VSS Note JACK DETECTION Detect if a Headset is inserted into the JACK or not Without a Headset 1 5V is measured at pin 23 while with a Headset 0V is measured at pin 23 176 KX FC971CX S KX FGA521CX S ...

Page 177: ...9 REFERENCE MATERIAL DATA 9 1 TERMINAL GUIDE OF THE ICs TRANSISTORS AND DIODES 9 1 1 Base Unit 9 1 1 1 Digital Board 9 1 1 2 Analog Board 177 KX FC971CX S KX FGA521CX S ...

Page 178: ...9 1 1 3 Operation Board 9 1 1 4 Power Supply Board 9 1 2 Cordless Handset 178 KX FC971CX S KX FGA521CX S ...

Page 179: ...ecific Gravity 0 82 Type RMA lower residue non cleaning type Note See ABOUT LEAD FREE SOLDER PbF Pb free P 4 9 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 the joint between the IC and...

Page 180: ...he 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 9 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 180 KX FC971CX S KX FGA521CX S ...

Page 181: ...9 3 TEST CHART 9 3 1 ITU T No 1 TEST CHART 181 KX FC971CX S KX FGA521CX S ...

Page 182: ...9 3 2 ITU T No 2 TEST CHART 182 KX FC971CX S KX FGA521CX S ...

Page 183: ...10 FIXTURES AND TOOLS 183 KX FC971CX S KX FGA521CX S ...

Page 184: ...11 CABINET MECHANICAL AND ELECTRICAL PARTS LOCATION 11 1 OPERATION PANEL SECTION 184 KX FC971CX S KX FGA521CX S ...

Page 185: ...11 2 UPPER CABINET SECTION 185 KX FC971CX S KX FGA521CX S ...

Page 186: ...11 3 LOWER CABINET SECTION 186 KX FC971CX S KX FGA521CX S ...

Page 187: ...11 4 MOTOR SECTION 187 KX FC971CX S KX FGA521CX S ...

Page 188: ...11 5 CORDLESS HANDSET SECTION 188 KX FC971CX S KX FGA521CX S ...

Page 189: ...11 6 CHARGER UNIT SECTION 189 KX FC971CX S KX FGA521CX S ...

Page 190: ...11 7 ACTUAL SIZE OF SCREWS 190 KX FC971CX S KX FGA521CX S ...

Page 191: ...12 ACCESSORIES AND PACKING MATERIALS 191 KX FC971CX S KX FGA521CX S ...

Page 192: ...13 ACCESSORIES AND PACKING MATERIALS 13 1 KX FGA521CX 192 KX FC971CX S KX FGA521CX S ...

Page 193: ...0 PFKR1086Z1 GUIDE DOCUMENT L S PS 21 PFUV1088Z1 COVER DOCUMENT GUIDE S PS 22 PFHX1834Z SEET READ 23 PFHG1210Z SEPARATION RUBBER 24 PFHR1504Y HOLDER SEPARATION PS 25 PFUS1588Z SPRING DOC SUPPORT 26 PFHR1503Z SUPPORT DOC FEED PBT 27 PFUS1631Z SPRING DOC SUB POLLER 28 PFUV1082X2 COVER OPERATION PANEL PS 29 PFDF1017Z SHAFTZ 30 PFDR1045Z POLLER DOC SUB POM 31 PFUS1587Z SPRING DOC SUB PROLLER 32 PFJS10...

Page 194: ...H PANEL LCD 220 PFHX1808Z SHEET BACKLIGHT 221 PFHG1174Z RUBBER R LCD 222 PFSA1015Z ANTENNA A 223 PFSA1016Z ANTENNA B 224 PFHE1156Z SPONGE LCD 225 WLK28YB08AA LEADWIRE SPEAKER BLACK 226 WLK28YR08AA LEADWIRE SPEAKER RED 14 1 6 CHARGER UNIT SECTION Ref No Part No Part Name Description Remarks 300 KXFGA521CXCS HANDSET CHARGER 300 1 PFHG1044Z RUBBER FOOT 300 2 PFKF1062X1 COVER PS 300 3 PFKM1124Z1 CABIN...

Page 195: ...ECJ0EC1H030C 3P C71 ECJ0EB1A104K 0 1 C75 ECJ0EB1C103K 0 01 C78 ECJ0EB1H102K 0 001 Ref No Part No Part Name Description Remarks C80 ECJ0EB1A104K 0 1 C83 ECJ1VB1C105K 1 C88 ECJ0EC1H330J 33P C91 ECJ0EB1C103K 0 01 C98 ECJ0EB1A104K 0 1 C100 ECJ0EF1C104Z 0 1 C104 ECJ0EB1C103K 0 01 C106 ECJ0EC1H060C 6P C108 ECJ0EC1H180J 18P C110 ECJ0EB1C103K 0 01 C111 ECJ0EB1C103K 0 01 C113 ECJ0EB1A104K 0 1 C117 ECJ0EB1A...

Page 196: ...L S L11 PQLQR2KA113 COIL S L25 ELJRF39NJFB COIL L34 PQLQR2KB20T COIL S RESISTORS J5 ERJ2GE0R00 0 J6 ERJ2GE0R00 0 J7 ERJ2GE0R00 0 J9 ERJ3GEY0R00 0 Ref No Part No Part Name Description Remarks L23 ERJ2GE0R00 0 L24 ERJ2GE0R00 0 R1 ERJ3GEYJ100 10 R11 ERJ2GEJ682 6 8K R12 ERJ2GEJ183 18K R13 ERJ2GEJ124 120K R14 ERJ2GEJ124 120K R17 ERJ2GEJ472X 4 7K R20 ERJ2GEJ472X 4 7K R22 ERJ2GE0R00 0 R23 ERJ2GEJ220 22 R...

Page 197: ...EYJ105 1M VARIABLE RESISTOR Ref No Part No Part Name Description Remarks R103 EVN5ESX50B54 VARIABLE RESISTOR COMPONENTS PARTS RA3 EXB28V470JX SOLID RESISTOR RA4 EXB28V470JX SOLID RESISTOR RA5 EXB28V470JX SOLID RESISTOR RA6 EXB28V470JX SOLID RESISTOR RA7 EXB28V101JX SOLID RESISTOR CRYSTAL OSCILLATORS X1 H0J322500004 CRYSTAL OSCILLATOR X3 H0A327200096 CRYSTAL OSCILLATOR X4 H2A240500005 CRYSTAL OSCIL...

Page 198: ...YJ202 2K R533 ERJ3GEYJ242 2 4K R534 ERJ3GEYJ153 15K R535 ERJ3GEYJ153 15K R536 ERJ3GEY0R00 0 R537 ERJ3GEY0R00 0 R538 ERJ3GEYJ122 1 2K R539 ERJ3GEY0R00 0 R540 ERJ3GEYJ154 150K R541 ERJ3GEYJ222 2 2K Ref No Part No Part Name Description Remarks R542 ERDS2TJ221 220 S R543 ERDS2TJ121 120 S R544 ERJ3GEYJ101 100 R548 ERJ3GEYJ103 10K R549 ERJ3GEYJ103 10K R559 ERDS1TJ223 22K S R567 ERDS1TJ153 15K S R573 ERJ...

Page 199: ...ef No Part No Part Name Description Remarks PCB5 PFWP3FC533CN CORDLESS MAIN BOARD ASS Y RTL PCB5 1 L0CBAB000052 BUILTIN MICROPHONE PCB5 2 PFHX1661Z SPACER ICS IC900 PFWI3FC533CN IC S Ref No Part No Part Name Description Remarks IC901 C0EBF0000424 IC IC903 C1BB00001024 IC IC905 C3EBJC000017 IC IC907 C1BB00001021 IC IC908 C0CBCBC00175 IC IC909 C0DBAGF00031 IC TRANSISTORS Q901 UN521 TRANSISTOR SI S Q...

Page 200: ... 39K S R921 ERJ2GEJ103 10K R923 ERJ3GEYJ102 1K R930 ERJ3ENF8202 82 S R936 ERJ2GEJ472X 4 7K R937 ERJ2GEJ472X 4 7K R940 ERJ2GEJ102 1K R941 ERJ2GEJ101 100 R942 ERJ2GEJ102 1K R943 ERJ3GEYJ101 100 R944 ERJ2GEJ123 12K R945 ERJ2GEJ103 10K Ref No Part No Part Name Description Remarks R946 ERJ2GEJ104 100K R954 ERJ2GEJ103 10K R955 ERJ3GEYJ103 10K R956 ERJ2GEJ102 1K R957 ERJ2GEJ104 100K R959 ERJ2GEJ104 100K ...

Page 201: ...182 1 8K R128 ERJ6GEYJ101 100 R221 ERJ3GEYJ102 1K R222 ERJ3GEYJ102 1K R223 ERJ3GEYJ102 1K R224 ERJ3GEYJ562 5 6K R225 ERJ3GEYJ222 2 2K R228 ERJ3GEYJ102 1K Ref No Part No Part Name Description Remarks R229 ERJ3GEYJ183 18K CAPACITORS C101 ECQU2A104ML 0 1 C102 ECQU2A104ML 0 1 C103 PFKDD2GA102M 0 001 S C105 PFKDD2GA332M 0 033 S C106 EEUEB2W560U 56 C107 PFKDD3DD470J 47P S C108 PFKDD3AD102K 0 001 S C109 ...

Page 202: ...T M ANT S C245 DA2 ANT1 ANT2 C140 3 45V L23 L25 L24 R256 1 2 R243 1 24 X5 BTXON 48 3 0Va 25 R244 WHITE R204 R203 C225 CN2 2 R296 C221 C122 R97 C212 IC23 R98 C220 C223 C224 R245 14 14 15 28 1 Q21 6Va 8 5 R170 L17 R162 R174 R138 D13 CN6 Q10 R117 D12 CN5 1 11 IC11 16 9 Q14 5 1 1 8 CN8 CN9 C185 R175 R176 Q9 C153 R202 32 7 C178 1 5 3 4 SYSRSTa 3 3VDa IC17 C197 RA2 RA1 C204 C13 R14 R13 L2 C286 C1 X1 R33...

Page 203: ...R2347 39 64 65 IC4 102 C67 C68 R302 R303 C278 R62 C78 J9 E C279 R337 R57 C75 C59 C277 R49 103 38 1 128 C91 AG 6V R19 D3 R20 C21 C22 C20 R22 C308 D4 R232 C71 L32 Q7 IC27 5 8 4 1 R304 R330 R329 C300 R332 R298 C276 C282 R301 R334 R331 R333 C299 C302 R58 L30 C296 C297 R18 E Q23 R263 C248 R262 C247 C30 C32 C17 C18 R17 C19 R21 C293 C23 C26 C29 R23 L7 MFCS C46 CE1 DB7 DB6 DB4 DB2 DB0 DB5 DB3 DB1 CE2 C169...

Page 204: ...500 C555 CN502 J502 JJ501 JJ506 JJ507 J503 CN500 SA500 L503 SW501 SW502 J510 J504 J505 J512 J523 C571 C533 C502 C503 D505 D506 R567 R554 R559 R543 R542 SA501 CN501 POS500 JJ500 L500 C505 C542 D503 R552 R511 J521 Q501 E C538 4 8 5 1 J516 J518 J519 C569 C508 J507 J520 JJ502 J525 PFUP1481ZA PbF KX FC971CX S ANALOG BOARD Component View J508 CN505 CN504 1 10 1 10 KX FC971CX S KX FGA521CX S 204 ...

Page 205: ...03 C500 R501 Q507 C523 R576 R544 R507 R508 R509 C519 C532 PC500 R513 R512 C570 C504 C567 R550 DA500 C537 L519 L517 L518 L516 R510 R545 PC503 PC502 Q503 E R547 R551 D504 PC501 PC504 IC501 R575 E E Q500 R500 R504 R502 R506 R505 C512 L501 L521 L520 L502 C552 C528 R538 C529 R541 C517 R539 R574 R519 C515 R529 R524 R530 C516 R528 C513 C514 C563 1 10 CN504 1 10 E Q506 IC500 R521 Q505 PFUP1481ZA PbF Q502 ...

Page 206: ...C30 R38 R37 R35 R44 C24 C27 C22 C21 R41 R36 L1 C23 L2 C26 C25 R40 R21 C17 STOP SW3 FAX START SW1 COPY MIC CN PCB CH SW2 CN3 PbF PFUP1482ZA B 1 3 FLASH J13 J14 J12 SW19 RECORD SW29 INTERCOM SW26 J16 J7 J6 J2 J1 J26 C3 1 10 CN1 MENU SW32 ERASE SW36 PLAYACK SW37 AT ANS SW33 LED1 REDIAL SW20 PAUSE SW18 SW17 MONITOR SW4 CN2 R52 1 10 R51 J11 J10 J23 J22 J5 J4 J21 J15 J3 J8 J9 J17 J20 J27 1 SW9 2 SW10 5 ...

Page 207: ...F 1678EK PRIMARY D205 D202 D201 C207 D204 SECONDARY PC101 T101 D106 R107 R202 R111 R105 C202 C201 VR201 D203 D206 KX FC971CX S POWER SUPPLY BOARD R224 R223 R225 C205 J204 R229 D205 R228 R221 R222 R226 R227 Q201 Q203 C214 R122 R102 IC101 1 4 8 5 R128 C123 C121 C122 CAUTION PRIMARY SECONDARY FOR CONTINUED PROTECTION AGAINST RISK OF FIRE REPLACE ONLY WITH SAME TYPE AND RATINGS OF FUSE R123 R121 Q202 ...

Page 208: ...NT VIEW CN1 CN2 C3 JK1 PFUP1344Z PCB CH PbF 1 4 3 2 5 KX FC971CX S CHRGER UNIT BOARD COMPONENT VIEW 15 5 2 BOTTOM VIEW D1 R2 R1 Q2 Q1 L2 L1 C5 C4 C2 C1 PFUP1344Z PbF KX FC971CX S CHRGER UNIT BOARD BOTTOM VIEW KX FC971CX S KX FGA521CX S 208 ...

Page 209: ...E X900 RFCLK 15 16 24 25 30 1 9 10 C963 E Q910 Q909 SW900 E Q919 Q906 Q905 E PbF PFUP1506ZA RED BLACK RED BLACK ANT REF CH C995 D906 C938 C994 Q911 Q917 C1005 IC909 Q915 E Q901 E E Q918 IC903 GND URX UTX MIC MIC Q908 E C1013 C1014 REF CH AUTO CH R995 R994 R996 R1014 R1016 R987 R988 R989 R990 R905 R904 R1015 C982 C981 C1017 LED901 LED905 F1 1 4 7 8 0 5 6 GND 9 2 3 F2 LED904 CN904 LED902 LED903 7 1 ...

Page 210: ... 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 3 210 KX FC971CX S KX FGA521CX S ...

Page 211: ... R503 NC R511 33 1 2W R504 NC 0 R539 R513 6 8K 2 2K R541 0 R524 R507 NC 2 2K R519 R543 120 1 4W R502 NC 1K R514 R506 NC R508 NC R544 100 R538 1 2K NC R527 15K R535 R509 NC NC R576 R512 12K 0 R536 R505 NC R510 NC R545 NC D500 Q507 Q503 Q501 Q500 NC Z0 1u C563 K1u C506 JJ502 10K R573 2 2 R578 5VA 6 3V100u C569 C525 NC K0 1u C521 K0 1u C522 1M R525 SW502 1 2 3 4 SW501 1 2 3 4 Q508 Q502 10K R521 10K R...

Page 212: ...0V4 7u L520 BEAD L521 BEAD L522 L501 BEAD L502 BEAD L503 BEAD JJ501 NC JJ500 NC JJ507 JJ506 NC 10K R548 R547 NC 10K R549 R554 NC 22K 1 2W R559 R550 NC R551 NC R515 220 1 4W R552 NC 15K 1 2W R567 D503 NC D508 D504 1 2 3 4 D506 3V D502 D501 POS500 22 SA501 3000V ZNR500 120V Q505 SA500 310V L523 C534 K1u L519 L517 L518 L516 K1u C572 DA500 NC 1K 2A 1A2K DA501 NC 1A 2K 1K2A D505 3V D10p C536 DP TO TEL ...

Page 213: ...D7 8 PIA_RESETn 9 PIA_STROBE EYESYNC 10 PIA_TXSIN 11 PIA_RXOUT 12 PIA_CNTRL_SIN 13 PIA_CLKIN 14 PIA_SCLK EYECLK 15 IA1_SCLK 16 IA1_CLKIN 17 IA1_CNTRL_SIN 18 IA1_TESTC 19 IA1_RXOUT 20 IA1_TXSIN 21 IA1_STROBE 22 IA1_RESETn 23 RESERVED23 24 IA_AVSS 25 RESERVED25 26 RESERVED26 27 RESERVED27 28 RESERVED28 29 RESERVED29 30 RESERVED30 31 RESERVED31 32 RESERVED32 33 RESERVED33 34 RESERVED34 35 RESERVED35 ...

Page 214: ...5 VIN NC C129 3 3VD Z1u C132 6V Q24 3 3VD 1 VSS 2 VIN VIN 3 VOUT System5V 1 VSS 2 3 VOUT C131 6 3V47u Z1u C135 Z1u C133 C126 Z0 1u 24V C134 6 3V47u 0 J5 5VA 0 R297 NC C291 5V Z1u C128 NC C294 NC R39 0 R274 5VA 5VA Vrefop NC R329 NC R330 NC R333 NC R334 NC C296 NC C297 NC C299 NC C300 NC C303 NC C304 NC C306 10 R336 C283 6 3V100u 10 R337 NC R332 1 2 3 4 8 5 6 7 0 J7 NC R219 NC C213 5VA Vrefop NC C2...

Page 215: ...5 VIN NC C129 3 3VD Z1u C132 6V Q24 3 3VD 1 VSS 2 VIN VIN 3 VOUT System5V 1 VSS 2 3 VOUT C131 6 3V47u Z1u C135 Z1u C133 C126 Z0 1u 24V C134 6 3V47u 0 J5 5VA 0 R297 NC C291 5V Z1u C128 NC C294 NC R39 0 R274 5VA 5VA Vrefop NC R329 NC R330 NC R333 NC R334 NC C296 NC C297 NC C299 NC C300 NC C303 NC C304 NC C306 10 R336 C283 6 3V100u 10 R337 NC R332 1 2 3 4 8 5 6 7 0 J7 NC R219 NC C213 5VA Vrefop NC C2...

Page 216: ...34 SKEY 5 SW35 SKEY 4 SW36 ERASE SW37 PLAYBACK C14 J120p 0 R14 C13 K330p SW38 1 2 3 4 4 7KR23 100 R21 K0 01u C20 5V CN2 1 2 3 4 5 6 7 8 9 10 R15 18K 1KR24 820 R25 R17 2 2K CN4 1 2 2 2K R26 2 2K R27 Q2 Q3 2 2K 1 2W R28 2 2K 1 2W R29 2 2K 1 2W R30 2 2K 1 2W R31 2 2K 1 2W R32 4 7K 1 4W R33 24V 24V 24V NC C21 L1 NC L2 NC NCC22 NCC23 NC C24 NC R34 NC C25 NC R35 NC R36 NC R37 NC R38 NC C26 NC C27 NC C28...

Page 217: ...17 4 POWER SUPPLY BOARD IC101 KX FC971CX S POWER SUPPLY BOARD KX FC971CX S KX FGA521CX S 217 ...

Page 218: ...915 9 SW927 SW933 切 IC907 1 CD 2 VREF 3 VIN 4 VIN 5 VOUT 1 6 V 7 GND 8 VOUT 2 DG K1u C993 VREF SW925 2 外線 C927 K0 068u R968 NC 5 6K R967 1K R953 SW917 7 SW919 0 1K R954 10K R921 SW914 4 C945 K3900p R944 12K 10K R945 R91 5 100K R946 100K SW912 6 1 1 1 10K R911 1K R950 1K R951 R919 560 1K R903 22K R910 22K R909 1K R952 C908 MIC 1 HSMIC 2 HSMIC R908 5 6K C972 K0 01u C914 K0 1u C909 K0 1u K0 1u C917 C...

Page 219: ...DC3 80 ADC0 3 0V 3 0V 3 0V 3 0V PQCUV0J475KB K4 7u C963 15K R929 DG DG DG DG DG DG IC902 1 VIN 2 VSS 3 ON OF F 4 NC 5 VOU T DG K1u C925 DG DG K1MN21BA0041 CN904 1 RESETB 2 CSB 3 SCL 4 SD A 5 GN D 6 VREF 7 VCH 8 VD D 9 VUI N 10 VCC3 11 VC3 12 VCC2 13 VC2 14 VCC1 15 VC1 16 VUOUT 17 V1 18 V2 19 V3 20 V4 21 V5 DG C981 Z1u DG DG DG 2 5V 2 5V IC901 1 VIN 2 VSS 3 ON OFF 4 NC 5 VOUT DG VBAT VBAT LED903 B3...

Page 220: ...UNIT BOARD OUT PUT DC 5V KX FC971CX S CHARGER UNIT BOARD L1 L2 CN1 CN2 DC7 5V 100mA JK1 1 2 3 4 5 16V100u C3 6 8 R2 D1 NC A K Z0 1u C1 Q2 C4 NC C5 NC M0 1u C2 270 R1 Q1 220 KX FC971CX S KX FGA521CX S Y M KXFC971CXS ...

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