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Panasonic KX-FT981LA-B, Service Manual

The Panasonic KX-FT981LA-B, a reliable fax machine, is complemented by its comprehensive service manual. Users can easily access and download the free manual from our website, ensuring a seamless setup and optimal usage experience. Visit manualshive.com to download the manual and unlock the full potential of this remarkable product.

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190

KX-FT981LA-B / KX-FT987LA-B

20.2.4. Analog Board Parts 

20.2.5. Operation Board Parts 

C85    ECUE1A104KBQ      0.1

  

C87    ECUE1C104ZFQ      0.1

  

C88    F2G1C1000014      10

  

C89    ECUE1H820JCQ      82p                              
C90    F2G1C1000014      10

  

C91    ECUE1A104KBQ      0.1

  

C93    ECUE1C104ZFQ      0.1

  

C94    ECUE1A104KBQ      0.1

  

C95    ECUE1H102KBQ      0.001

  

C98    ECUE1A104KBQ      0.1

  

C99    ECUE1C103KBQ      0.01

  

C100   ECUE1C103KBQ      0.01

  

C101   ECUE1A104KBQ      0.1

  

C102   ECUE0J105KBQ      1

 

 

C103   ECUE0J105KBQ      1

 

 

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No.

Part No.

Part Name & Description

Remark

s

 

PCB2

PNLP2002CXZ

ANALOG BOARD ASS'Y (RTL)
(for KX-FT981)

 

PCB2

PNLP2049CXZ

ANALOG BOARD ASS'Y (RTL)
(for KX-FT987)

(IC)

IC101 C0ABEB000083 

     IC                               

(TRANSISTORS)                

Q105   B1ABDF000026      TRANSISTOR(SI)                    
Q106   B1GBCFEN0010      TRANSISTOR(SI)                    

(DIODES)                     

D101   MA4120             DIODE(SI)                        S
D104   MA4030             DIODE(SI)                        S
D106   MA4030             DIODE(SI)                        S
D111   B0ADEJ000026      DIODE(SI)                         
D112    1SS133            DIODE(SI)                         

(CONNECTOR AND JACKS)                     

CN101 PQJS12A10Z 

       CONNECTOR, 12 PIN                      S

CN102 K2LA1YYB0001 

     JACK, HANDSET                      

CN103 K2LB1YYB0002 

     JACK, TEL LINE             

CN104 K2LB1YYB0002 

     JACK, EXT. LINE              

(for KX-FT981 only)

 

(SWITCHES)                   

SW101 K0L1BA000139 

     PUSH SWITCH                      

SW102 K0L1KA000007 

     PUSH SWITCH                      

SW103 PFSH1A03Z 

        PUSH SWITCH                     S

(COILS)                          

L107   PQLQR2KA113       COIL                            S
L108   PQLQR2KA113       COIL                            S
L109   PQLQR2KA113       COIL                            S
L110   PQLQR2KA113       COIL                            S
L111   PQLQR2KA20T       COIL                            S
L112   PQLQR2KA20T       COIL                            S
L113   PQLQR2KA20T       COIL (for KX-FT981 only)

 S

L114   PQLQR2KA20T       COIL (for KX-FT981 only)

 S

(PHOTO ELECTRIC TRANS-
DUCER)     

PC102 0N3181 

 

           PHOTO COUPLER

 S

(THERMISTOR)

POS101 PFRT002           THERMISTOR                             S

(RELAY)                         

RLY101 K6B1CYY00005      RELAY                           

(VARISTORS)                      

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No.

Part No.

Part Name & Description

Remark

s

SA101 PFRZRA311P6T 

     VARISTOR (Surge Absorber)                       S

SA102 PFRZRA102P6T 

     VARISTOR (Surge Absorber)                       S

(TRANSFORMER)                   

T101   G4AYA0000016      TRANSFORMER                     

(RESISTORS)

L106   ERJ3GEY0R00        0

 

 

R101   ERJ3GEYJ103       10k                              
R102   ERJ3GEYJ103       10k                              
R103   ERJ3GEYJ220       22

  

R106   ERJ3GEYJ333       33k                              
R107   ERJ3GEYJ333       33k                              
R108   ERJ3GEYJ274       270k                             
R109   ERJ3GEYJ163       16k                              
R110   ERJ3GEYJ163       16k                              
R111   ERJ3GEYJ512       5.1k                             
R112   ERJ3GEYJ562       5.6k                             
R114   ERDS2TJ331        330

 S

R117   ERJ3GEYJ822       8.2k                             
R118   ERJ3GEYJ433       43k                              
R122   ERDS1TJ223        22k                             S
R127   ERG2SJ121         120

  

R128   ERJ3GEYJ123       12k                              
R129   ERJ3GEYJ754       750k                             
R130   ERJ3GEYJ754       750k                             
R133   ERDS1TJ153        15k                             S
R134   ERJ3GEYJ473       47k                              
R135   ERJ3GEYJ331       330

  

R138   ERJ3GEYJ912       9.1k                             
R139   ERJ3GEYJ912       9.1k                             
R142   ERJ3GEYJ152       1.5k                             
R143   ERJ3GEYJ152       1.5k                             
R145   ERJ3GEYJ331       330

  

(CAPACITORS)

C101   ECEA0JKA470       47

  

C102   ECEA0JKA470       47

  

C103   ECUV1E104ZFV      0.1

  

C104   ECUV1H561KBV      560p                             
C105   ECUV1H561KBV      560p                             
C106   ECUV1H101JCV      100p                             
C107   ECUV1H562KBV      0.0056

  

C108   ECUV1C104KBV      0.1

  

C109   ECUV1C104KBV      0.1

  

C110   ECUV1H472KBV      0.0047

  

C111   ECUV1C393KBV      0.039

  

C113   ECEA1HKA4R7       4.7

  

C115   ECUV1H103KBV      0.01

  

C116   ECUV1C104KBV      0.1

  

C119   ECUV1C333KBV      0.033

  

C120   ECUV1H151JCV      150p                             
C121   ECUV1H151JCV      150p                             
C124   ECUV1H472KBV      0.0047

  

C126   ECUV1H101JCV      100p                             
C128   ECEA0JKS470       47

 S

C129   ECUV1C333KBV      0.033

  

C130   ECUV1C333KBV      0.033

  

C131   ECUV1H103KBV      0.01

  

C132   ECUV1H103KBV      0.01

  

C134   ECEA0JKA470       47

  

C135   ECUV1H103KBV      0.01

  

C136   F0C2E105A216      1

 

 

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No.

Part No.

Part Name & Description

Remar

ks

 

PCB3

PNWP2FT986CN OPERATION BOARD ASS'Y 

(RTL)

 

PCB203 PNWP2FT987CX OPERATION BOARD ASS'Y 

(RTL)

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No.

Part No.

Part Name & Description

Remark

s

Summary of Contents for KX-FT981LA-B

Page 1: ...o Ltd All rights reserved Unauthorized copying and distribu tion is a violation of law ORDER NO KMF0806165CE Personal Facsimile Facsimile with Digital Answering System Model No KX FT981LA B KX FT987LA B Black version for Latin America ...

Page 2: ...54 10 1 DTMF Single Tone Transmit Selection 56 10 2 Button Code Table 56 10 3 Print Test Pattern 57 11 Service Mode 58 11 1 Programing and Lists 58 11 2 The Example of the Printed List 62 12 Troubleshooting Guide 67 12 1 Troubleshooting Summary 67 12 2 Error Messages Display 68 12 3 Error Messages Report 70 12 4 Remote Programming 92 12 5 Troubleshooting Details 95 13 Service Fixture Tools 127 14 ...

Page 3: ...y or electric shock which can be caused by improper repair work 1 When repair services are provided neither the products nor their parts or members shall be remodeled 2 If a lead wire assembly is supplied as a repair part the lead wire assembly shall be replaced 3 FASTON terminals shall be plugged straight in and unplugged straight ICs and LSIs are vulnerable to static electricity When repairing t...

Page 4: ...roller 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 t...

Page 5: ... 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 Never touch the electrical sections such as the power supply unit etc ...

Page 6: ...re soldering iron please be 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...

Page 7: ...utside the specified limits there is a possibility of a shock hazard 2 3 Battery Caution CAUTION Danger of explosion if the battery is incorrectly replaced Replace only with the same or equivalent type recommended by the manufacturer Dispose of used batteries according to the manufacturer s Instructions The lithium battery is a critical component type No CR2032 Please observe for the proper polari...

Page 8: ...al mode 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 level Scanner Type Contact Image Sensor Printer Type Thermal printing Data Compression System Modified Huffman MH Modified READ MR Modem Speed 9 600 7 200 4 800 2 400 bps Automatic Fallback Operating Environme...

Page 9: ...uded or specified recording paper Using other recording paper may affect print quality and or cause exces sive wear to the thermal head 4 2 Translation Lists 4 2 1 Error Messages Display Model No Item Specifications Usage KX A106 Standard thermal recording paper 1 216 mm 30 m roll with 25 mm core ...

Page 10: ...h Automatic Paper Cutter KX FT987 only Facsimile Document memory Automatic document feeder 10 sheets 64 Level halftone resolution Standard Fine Photo Super Fine Broadcast Integrated Telephone System Phonebook function 100 names One Touch Dial 10 stations Caller ID compatible Monitor KX FT981 only Digital SP Phone KX FT987 only Digital Answering System KX FT987 only Voice Time Day Stamp 12 Minutes ...

Page 11: ...11 KX FT981LA B KX FT987LA B 6 Technical Descriptions 6 1 Connection Diagram ...

Page 12: ...used mainly for the parameter working in the storage area 3 Dynamic RAM IC4 This memory is used mainly for the parameter working in the storage area 4 MODEM IC5 Performs the modulation and the demodulation for FAX communication 5 Read Section CIS image sensor to read transmitted documents 6 Motor Driver IC7 Drives the transmission motor and the reception motor 7 Thermal Head Contains heat emitting...

Page 13: ...13 KX FT981LA B KX FT987LA B 6 2 1 General Block Diagram ...

Page 14: ...WER SOURCE ANALOG GND 2 VDDA 3 3 3 3V POWER SOURCE ANALOG 3 3V 3 AIN1 A 3 3V CIS IMAGE SIGNAL INPUT ATN1 4 AIN2 A 3 3V THERMISTOR TEMPERATURE WATCH INPUT 5 AIN3 A 3 3V LINE VOLTAGE DETECTION SIGNAL INPUT DCIN 6 AMON A 3 3V ANALOG SIGNAL MONITOR TERMINAL 7 VSS1 GND POWER SOURCE GND 8 X32OUT O 3 3V BATT RTC 32 768KHz CONNECTION 9 X32IN I 3 3V BATT RTC 32 768KHz CONNECTION 10 VDD 3 3V B POWER SOURCE ...

Page 15: ...DB2 I O 3 3V CPU DATA BUS 2 68 DB4 I O 3 3V CPU DATA BUS 4 69 DB1 I O 3 3V CPU DATA BUS 1 70 DB5 I O 3 3V CPU DATA BUS 5 71 VDD 3 3V 4 POWER SOURCE 3 3V 72 VSS5 GND POWER SOURCE GND 73 VSS6 GND POWER SOURCE GND 74 VDD 3 3V 5 POWER SOURCE 3 3V 75 DB0 I O 3 3V CPU DATA BUS 0 76 DB6 I O 3 3V CPU DATA BUS 6 77 DB7 I O 3 3V CPU DATA BUS 7 78 XROMCS O 3 3V FLASH IC2 CHIP SELECT 79 XRD O 3 3V CPU RD 80 X...

Page 16: ... A PHASE 123 RM3 IOP O 3 3V MOTOR B PHASE 124 RXE IOP O 3 3V MOTOR ENABLE 125 TMO O 3 3V OUTPUT PORT R1 126 VDD 2 5V 4 POWER SOURCE 2 5V 127 VSS11 GND POWER SOURCE GND 128 TM1 IOP O 3 3V OUTPUT PORT R2 129 TM2 IOP O 3 3V OUTPUT PORT CISON 130 TM3 IOP O 3 3V OUTPUT PORT RLY 131 TXE IOP I 3 3V INPUT PORT CUT_POS 132 KSTART O 3 3V OPERATION PANEL CONTROL 133 KLATCH O 3 3V OPERATION PANEL CONTROL 134 ...

Page 17: ...w 1 and F600H F7FFH DRAM access window 2 6 3 4 Reset Circuit Watch dog timer The output signal reset from pin 4 of the voltage detect IC IC3 is input to the ASIC IC1 114 pin 1 During a momentary power interruption a positive reset pulse of 50 70 msec is generated and the system is reset com pletely 2 The watch dog timer built in the ASIC IC1 is initialized by the CPU about every 1 5 ms When a watc...

Page 18: ...en the power is turned ON power is supplied to RTC IC1 At this time the voltage at pin 14 of RTC IC1 is 3 3V When the power is turned OFF the battery supplies the power to RTC through JS1 R30 D14 At that time the voltage at pin 14 of IC1 are about 2 5V When the power is OFF and the 5V and 3 3V voltages decrease the LOW is input to pin 114 of IC1 Pin 111 of IC1 outputs the reset signals Pin 11 of I...

Page 19: ...gers point 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 IC1 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 sta...

Page 20: ...s 1 Then via routes 4 and 5 they are stored in RAM 4 The white black data stored as above via routes 6 and 8 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 route 9 and is printed out on recording paper Note Fine Reads 3 85 lines mm Super Fine Reads 7 7 lines mm Photo Reads 15 4 lines mm Transmission 1 Same processin...

Page 21: ...21 KX FT981LA B KX FT987LA B 6 4 2 Block Diagram ...

Page 22: ...ected in series and upon the shift of dot 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 103 104 only black dot locations 1 among latched data activates the driver...

Page 23: ...23 KX FT981LA B KX FT987LA B ...

Page 24: ...evel and the transistor Q14 turns 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 IC1 and the original image illuminated by the light source undergoes photoelectric conversion to output an analogue image signal AIN The analogue image signal is input to the system ASIC on AIN1 pin 3 of IC1 and converted into 8 bit ...

Page 25: ...C1 causing driver IC7 to 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 docu ment paper The timing chart is below Stepping Motor Phase Pattern When the motor is OFF ASIC IC1 pin 124 becomes a low level and Q2 and Q1 also turns OFF Instead of 24V 5V is supplied through D11 ...

Page 26: ...display Sensor Circuit Location Sensor Sensor or Switch Name Error Message 1 DIGITAL CN5 Motor Position Sensor CALL SERVICE CN6 Cutter Position Sensor KX FT987 only PAPER JAMED ANALOG SW101 Cover Open Paper Sensor COVER OPEN and CHECK PAPER SW102 Hook Sensor SW103 JAM Sensor PAPER JAMED Operation Panel SW338 Document Top Sensor REMOVE DOCUMENT SW339 Document Set Sensor CHECK DOCUMENT ...

Page 27: ...e print head and the cover is closed the paper sensor SW turns ON and the input signal of IC1 20 pin becomes a low level Usually the SW turns OFF and the input signal of IC1 20 pin becomes a high level Signal IC1 119 pin Home position Low level Other High level Signal IC1 131 pin Home position Low level Other High level Sensor Signal IC1 20 pin Set recording paper and cover is closed ON Low level ...

Page 28: ...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 dis played If the recording paper is at the sensor position then the switch turns on the IC1 21 pin switches to a high level Sensor SW Signal IC1 43 pin ON Hook OFF High ...

Page 29: ...C301 5 pin Operation Board becomes a high level 6 5 7 Document Set Sensor SW339 When a document is set the SW becomes ON and input signal of IC301 6 pin Operation Board becomes a low level When there is no document the SW becomes OFF and the input signal of IC301 6 pin Operation Board becomes a high level Sensor SW Signal IC301 5 pin Out of the Read Position OFF High level At the Read Position ON ...

Page 30: ... 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 scan...

Page 31: ...d Time Transmission time consists of the following Control time This is time at the start of transmission when the functions at the sending and receiving sides are confirmed the 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 th...

Page 32: ...he 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 Transm...

Page 33: ...1 Maximum recording length capability 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...

Page 34: ...receiving side opti mizes the automatic 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 transmissi...

Page 35: ...35 KX FT981LA B KX FT987LA B b Redundancy Compression Process Coding Mode This unit uses one dimensional MH format ...

Page 36: ...NCU section and enters pin 47 of the modem IC5 The signals that enter pin 47 of the modem IC5 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...

Page 37: ...o pin 19 of ASIC IC1 on the digital board TEL LINE PC102 1 2 4 CN101 9 CN2 9 IC1 19 Note inside the digital board 6 7 3 ON OFF Hook Circuit Normally ON HOOK condition LINE RELAY RLY101 is OFF While OFF HOOK RLY101 turns ON This LINE RELAY is con trolled by pin 130 of IC1 through the Q7 ON HOOK IC1 130 Low Level Q7 OFF RLY101 OFF OFF HOOK IC1 130 High Level Q7 ON RLY101 ON 6 7 4 Pulse Dial Circuit ...

Page 38: ...plifier gain of 2 5 dB from pin 2 The transmission signal is input from CN101 pin 6 and output to the TEL line through T101 Without a side tone circuit the transmission signal would return to the reception amplifier via C113 and R114 Here the signal output from CN101 pin 6 passes through C113 R113 R112 C109 and R110 and enters the amplifier IC101 pin 2 This is used to cancel the return portion of ...

Page 39: ...which 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 multi...

Page 40: ...To use this feature you must sub scribe to a Caller ID service The data for the Caller ID from the telephone exchange is sent before the first ring signal The data from the telephone exchange is sent by DTMF signal 2 Circuit Operation The Caller ID signal from TEL LINE is processed with MODEM IC5 Refer to Check Sheet for Signal Route P 114 for the route of Caller ID DTMF signal ...

Page 41: ...ation over the handset i e the transmitted and received voices to and from the handset 2 Signal path Refer to Check Sheet for Signal Route P 114 6 8 5 Monitor Circuit for Each Signals 1 Function This circuit monitors various tones such as 1 DTMF tone 2 Alarm Beep Key tone Bell 3 Dummy ring back tone 2 Signal path Refer to Check Sheet for Signal Route P 114 6 9 TAM Interface Section KX FT981 only 1...

Page 42: ... ATAS main operation is performed by the special IC5 MODEM IC6 FLASH MEMORY control signals are input from ASIC IC1 a Greeting Message Recording b ICM Recording c Greeting Message ICM play to speaker d Greeting Message ICM play to Tel Line e Vox Detection 2 Signal Path Refer to Check Sheet for Signal Route P 114 ...

Page 43: ...y are controlled by the Gate Array IC301 and ASIC IC1 on the DIGITAL BOARD The key matrix table is shown below CN301 CN7 IC1 ASIC Chip on board type LCD GATE ARRAY IC301 CN302 DOCUMENT TOP SENSOR DOCUMENT SET SENSOR 8 x 5 KEYS MATRIX LED D301 DIGITAL BOARD OPERATION BOARD KX FT981 KX FT987 OPERATION BOARD BLOCK DIAGRAM XLED8 9 KIN0 7 XLED13 KSL0 4 ...

Page 44: ...is supplied for the crystal drive R312 R313 R314 and R316 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 English font Global 2 lines LED1 IC301 22pin H L LED15 IC301 21pin L L LED14 IC301 20pin Hi Z L ...

Page 45: ...gh 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 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 ...

Page 46: ...ary transfer 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 t...

Page 47: ...ows When the output voltage of the 24V circuit increases the current of the photo coupler PC101 increases the pulse width of the out put 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...

Page 48: ...acter number Press and hold to erase all characters numbers 3 FLASH To access special telephone services or for transferring extension calls 4 REDIAL PAUSE To redial the last number dialled If the line is busy when you send a fax the unit will automatically redial the num ber up to 2 times To insert a pause during dialing 5 RECORD KX FT987 only To record your greeting message To record a voice mem...

Page 49: ...To open a phonebook 19 SET To store a setting during programming 20 MENU To initiate or exit programming 21 LOWER To select stations 6 10 for the one touch dial feature 8 Installation Instructions 8 1 Installation Space The space required to install the unit is shown below The dimensions given are necessary for the unit to operate efficiently Note Avoid excessive heat or humidity Use the unit with...

Page 50: ...EXT jack KX FT981 only Remove the stopper if attached 5 Handset cord 6 Extension telephone not included Caution When you operate this product the power outlet should be near the product and easily accessible Keep the unit away from walls as far as possible to pre vent a recording paper jam Note Before you can make calls the dialling mode setting may need to be changed 8 3 Installing the Recording ...

Page 51: ...ents the Unit can Send Document weight Single sheet 45 g m2 to 90 g m2 Multiple sheets 60 g m2 to 80 g m2 Note Remove clips staples or other fasteners Do not send or copy documents that are on the following types of paper Make a copy of the document using another copier and send the copy Chemically treated paper such as carbon or carbonless duplicating paper Electrostatically charged paper Badly c...

Page 52: ...ng 3 Press SET The cursor will appear on the display 4 Enter your logo up to 30 characters See the following character table for details 5 Press SET The next feature will be displayed 6 Press MENU To select characters with 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 4 times 2 P...

Page 53: ...on will change to uppercase or lower case letters alternately 1 Press 2 4 times 2 Press 4 3 times 3 Press 4 Press 5 3 times To correct a mistake 1 Press or to move the cursor to the incorrect character 2 Press STOP To erase all characters press and hold STOP 3 Enter the correct character ...

Page 54: ...00Hz 8 1100Hz SET SCAN TEST Service Mode 5 5 5 Turns on the LEDs of the CIS and operates the read systems Refer to CIS Contact Image Sensor Section P 125 SET MOTOR TEST Service Mode 5 5 6 Rotates the transmission and reception motor to check the operation of the motor 02 FAX TX Reading memory 06 Cutter KX FT987 only 08 Recording paper is fed 10 Copy 13 Recording Paper reverse Press STOP button to ...

Page 55: ...the sensor lever is pressed directory Co Cover open sensor Turns on and off when the front cover is opened and closed Jm JAM sensor When JAM sensor is on Jm functions Ct Cutter sensor KX FT987 only When cutter sensor is on Ct functions Vx Vox signal KX FT987 only Detection signal for the tone on the line Turns on when there is a tone signal on the line Note Press STOP button to quit SET DIGITAL SP...

Page 56: ...1 697 5 1209 2 770 6 1336 3 852 7 1477 4 941 8 1633 High Hz 1209 1336 1477 Low Hz 697 1 2 3 770 4 5 6 852 7 8 9 941 0 Code Button Name Code Button Name Code Button Name 04 FAX START 31 1 47 CALLER ID 05 LOWER 32 2 06 COPY 33 3 64 STATION KEY 1 08 MONITOR or SP PHONE 34 4 65 STATION KEY 2 09 BROADCAST 35 5 66 STATION KEY 3 0A HANDSET MUTE or MUTE 36 6 67 STATION KEY 4 0C AUTO ANSWER 37 7 68 STATION...

Page 57: ...57 KX FT981LA B KX FT987LA B 10 3 Print Test Pattern 1 Platen roller 2 Left margin Top margin 3 Thermal head 1 dot 4 Use this test pattern to confirm the platen roller timing ...

Page 58: ...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 Functions are accessed by e...

Page 59: ... mission cannot be performed correctly adjust accord ingly 544 Document feed position mm 1 9 5 When the ADF function is in correct adjust the feed position 550 Memory Clear See Memory Clear Specification P 61 551 Flash memory check See Test Mode P 54 552 DTMF single tone test 1 ON 2 OFF 1 2 2 See Test Mode P 54 553 Monitor on FAX communication select 1 OFF 2 PHASE B 3 ALL 1 3 1 Sets whether to mon...

Page 60: ...P 85 and Receive Prob lem P 86 598 Receiving sensitivity 1 dBm 20 48 42 Used when there is an error problem Refer to The unit can copy but the transmission and reception image are incorrect P 90 710 Memory clear except History data Refer to Memory Clear Specification P 61 717 Transmit speed select 1 9600 BPS 2 7200 BPS 3 4800 BPS 4 2400 BPS 1 4 1 Adjusts the speed to start training during FAX tran...

Page 61: ...power supply after clearing a memory 880 History list 881 Journal 2 list See Special Service Journal Report P 79 882 Journal 3 list See Special Service Journal Report P 79 961 The time transmitting the false ring back tone sec 01 10 07 Set the time transmitting the false ring back tone to the line in TEL FAX mode 962 The operator calling time sec 05 30 10 Set the operator calling time through the ...

Page 62: ...62 KX FT981LA B KX FT987LA B 11 2 The Example of the Printed List 11 2 1 User Mode KX FT981 Note The above values are the default values ...

Page 63: ...63 KX FT981LA B KX FT987LA B 11 2 2 User Mode KX FT987 ...

Page 64: ...64 KX FT981LA B KX FT987LA B 11 2 3 Service Mode Settings KX FT981 Note The above values are the default values 11 2 4 Service Mode Settings KX FT987 Note The above values are the default values ...

Page 65: ...65 KX FT981LA B KX FT987LA B 11 2 5 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 66 ...

Page 66: ...ULSE 19 RECEIVE 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 OG RECORDING MESSAGE The number of messages recorded in TAM 26...

Page 67: ...on 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 e...

Page 68: ...8 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 Jams P 148 When performing broadcast transmission the document being stored exceeded the memory capacity of the unit Send the entire document manually There is no space to store new items in the phonebook Erase unnecessary items Your TA...

Page 69: ...69 KX FT981LA B KX FT987LA B The unit is too hot Stop using the unit for a while and let the unit cool down There is no memory available to record voice messages Erase unnecessary messages ...

Page 70: ...ter transmission of a 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...

Page 71: ...71 KX FT981LA B KX FT987LA B Countermeasure ...

Page 72: ...72 KX FT981LA B KX FT987LA B REFERENCE Test Mode P 54 ...

Page 73: ...73 KX FT981LA B KX FT987LA B REFERENCE Test Mode P 54 ...

Page 74: ...74 KX FT981LA B KX FT987LA B REFERENCE Test Mode P 54 ...

Page 75: ...75 KX FT981LA B KX FT987LA B REFERENCE Test Mode P 54 ...

Page 76: ...76 KX FT981LA B KX FT987LA B ...

Page 77: ...77 KX FT981LA B KX FT987LA B ...

Page 78: ...78 KX FT981LA B KX FT987LA B REFERENCE Test Mode P 54 ...

Page 79: ... gives 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 k...

Page 80: ...ed 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 other party s unit is set to the TEL mode No response will be p...

Page 81: ... Minimum 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 82: ...82 KX FT981LA B KX FT987LA B ...

Page 83: ...he unit can copy documents Receive Problem P 86 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 87 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 Th...

Page 84: ...nsmit Problem REFERENCE 1 Operation Panel Section P 122 2 ADF Auto Document Feed Section P 98 3 Maintenance P 140 4 How to Remove the Gear Block and Separation Roller P 134 5 How to Remove the Operation Board LCD and Platen Roller P 136 6 Refer to Translation Lists P 9 for display ...

Page 85: ... FT981LA B KX FT987LA B 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 59 1 Refer to Translation Lists P 9 for display ...

Page 86: ...related problems such as CHECK 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 FAX MEMORY FULL and its main cause for example CHECK PAPER are displayed on the LCD Once you solve the main problem FAX MEMORY FULL will be cancelled and the reception problem will be resolved LCD display messages indicati...

Page 87: ...87 KX FT981LA B KX FT987LA B 12 3 3 1 4 The unit can copy but cannot transmit receive REFERENCE 1 Test Mode P 54 2 Analog Board Section P 114 ...

Page 88: ... party 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 ...

Page 89: ...e Change 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 dete...

Page 90: ... 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 more of the reception is incorrect set the receiving speed to 4800BPS Service mode code No 718 Refer to Service Function Table P 59 TX side signal RX side signa...

Page 91: ...olume 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 ...

Page 92: ...the customer 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 92 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 i...

Page 93: ...Portuguese 2 Spanish Spanish OK 054 Common greeting MSG REC time KX FT987 only 1 16 sec 2 60 sec 16 sec OK 058 Scan contrast 1 NORMAL 2 DARKER 3 LIGHT NORMAL OK 059 Print contrast 1 NORMAL 2 DARKER NORMAL OK 067 ICM monitor KX FT987 only 1 ON 2 OFF ON OK 072 Recall Flash time 1 90 2 100 3 110 4 160 5 200 6 250 7 300 8 400 9 600 0 80 10 700 11 900 700 ms OK 073 Manual receive mode 1 TEL 2 TEL FAX T...

Page 94: ... sec 75 msec OK 594 Overseas DIS detection select 1 1st 2 2nd 1st OK 595 Receive error limit value set 1 5 2 10 3 15 4 20 10 OK 596 Transmit level set 00 15 1 dBm 11 1 dBm OK 598 1 Receiving Sensitivity 20 48 1 dBm 42 1 dBm OK 710 Memory clear except History data NG 717 Transmit speed select 1 9600 2 7200 3 4800 4 2400 bps 9600 bps OK 718 Receive speed select 1 9600 2 7200 3 4800 4 2400 bps 9600 b...

Page 95: ...er may 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 96 Diffi cult problems may be hard to determine s...

Page 96: ... Coping or Printing an Abnormal Sound is Heard from the Unit P 104 Power supply Voltage output is abnormal See Power Supply Board Section P 119 Operation panel Keys are not accepted See Operation Panel Section P 122 Sensor If the electric circuit is the cause the error mes sage corresponding to the sensor will be dis played See Sensor Section P 123 SERIAL NO DATE FUNCTION JUDGEMENT REFERENCE FAX o...

Page 97: ...C PLAY OK NG Memo REC PLAY OK NG Voice prompt KX FT987 only OK NG Service code 784 Refer to Test Mode P 54 Check whether voice prompt is play or not External Telephone Handset transceiver receiver OK NG Remote control OK NG Change to FAX receiving by pressing 9 default fax activation code Refer to 041 on Program Mode Table P 93 SERIAL NO DATE FUNCTION JUDGEMENT REFERENCE ...

Page 98: ...CE 1 Multiple Feed P 100 2 How to Remove the Operation Board LCD and Platen Roller P 136 3 Test Mode P 54 4 Digital Board Section P 106 5 Sensor Section P 123 6 How to Remove the Gear Block and Separation Roller P 134 7 How to Remove the Separation Rubber Flap P 137 8 Power Supply Board Section P 119 ...

Page 99: ...X FT981LA B KX FT987LA B 12 5 4 2 Document Jam REFERENCE 1 Test Mode P 54 2 Sensor Section P 123 3 How to Remove the Operation Board LCD and Platen Roller P 136 4 Disassembly and Assembly Instructions P 128 ...

Page 100: ...100 KX FT981LA B KX FT987LA B 12 5 4 3 Multiple Feed REFERENCE 1 How to Remove the Separation Rubber Flap P 137 2 Disassembly and Assembly Instructions P 128 3 Maintenance P 140 ...

Page 101: ...tenance Items and Component Locations P 140 2 Disassembly and Assembly Instructions P 128 3 How to Remove the Separation Rubber Flap P 137 4 How to Remove the Operation Board LCD and Platen Roller P 136 5 How to Remove the Image Sensor CIS and Feed Roller P 129 ...

Page 102: ...printing REFERENCE 1 Test Mode P 54 2 Thermal Head Section P 126 3 Maintenance Items and Component Locations P 140 4 Disassembly and Assembly Instructions P 128 5 How to Remove the Operation Board LCD and Platen Roller P 136 6 CIS Contact Image Sensor Section P 125 ...

Page 103: ...e Lock Lever and Thermal Head P 131 3 Maintenance Items and Component Locations P 140 4 How to Remove the Operation Board LCD and Platen Roller P 136 5 How to Remove the Image Sensor CIS and Feed Roller P 129 6 Digital Board Section P 106 Note 12 5 4 7 Skewed Receiving Image REFERENCE 1 Installing the Recording Paper P 50 ...

Page 104: ...rmal Sound is Heard from the Unit REFERENCE 1 Document Feeder Scanner Glass Cleaning P 149 2 Thermal Head Cleaning P 150 3 Disassembly and Assembly Instructions P 128 4 How to Remove the Motor of Gear Block P 134 5 How to Remove the Gear Block and Separation Roller P 134 ...

Page 105: ...es successfully but sometimes 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 Detai...

Page 106: ...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 107: ...I LCD Key And serial interface UART connects both systems Flash memory IC2 in the ASIC system is for software and also for user memory settings Phone book CID memory DRAM IC4 in the ASIC system is for work memory and also for fax memory The signal lines that must be normal for the system to boot up are listed here List 1 For signal lines other than these even if they malfunction they do not direct...

Page 108: ...108 KX FT981LA B KX FT987LA B NG Wave pattern Note Refer to NG Example P 113 ...

Page 109: ...ations of these signals If the timing of these signals is even 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 t...

Page 110: ...110 KX FT981LA B KX FT987LA B I O and Pin No Diagram ...

Page 111: ...rd After the power is turned on 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 113 Power Supply Board Section P 119 ...

Page 112: ...112 KX FT981LA B KX FT987LA B Other NG example while the power is ON and the LCD displays the following Refer to Translation Lists P 9 for display ...

Page 113: ...113 KX FT981LA B KX FT987LA B 12 5 6 2 NG Example ...

Page 114: ...ndset 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 MONITOR trace that signal route locally with the following Check Sheet and locate the f...

Page 115: ...115 KX FT981LA B KX FT987LA B ...

Page 116: ...ansmission reception Following the ITS section or NCU section search for the route between the microphone and the telephone line sending or between the telephone line and the speaker receiving where the signal disappears Check the components at that point 2 No pulse dialing 3 No ring tone or No bell 4 No tone dialing ...

Page 117: ...so a difference in the troubleshooting procedures between the two types At the start of communication during the initial 2 3 correspondences the digital speakerphone performs half duplex operation alternating between transmission Tx and reception Rx Then duplex communication becomes available Learning occurs during the initial 2 3 correspondences in order to set the appropriate parameters for dupl...

Page 118: ...118 KX FT981LA B KX FT987LA B Note Check to the SP Phone Rx Tx signal routes Refer to Check Sheet for Signal Route P 114 ...

Page 119: ...ning surge 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 ...

Page 120: ...120 KX FT981LA B KX FT987LA B 12 5 9 2 Troubleshooting Flow Chart ...

Page 121: ... case replace all of the parts D101 D102 D103 D104 F101 Q101 The worst case of Q101 is a short circuit between the Drain and Gate because damage expands to the peripheral circuit of Q101 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 ...

Page 122: ...122 KX FT981LA B KX FT987LA B 12 5 10 Operation Panel Section 12 5 10 1 No Key Operation REFERENCE Test Mode P 54 12 5 10 2 No LCD Indication REFERENCE Test Mode P 54 ...

Page 123: ...ront cover Also document set sensor document top sensor jam sensor and cutter sensor are turned ON OFF by the copy operation There fore 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 Refer to Translation Lists P 9 for display 12 5 11 1 Check the Cover...

Page 124: ...SW338 12 5 11 5 Check the Document Set Sensor SW339 12 5 11 6 Check the Motor Position Sensor CN5 1 Sensor is Ref No 183 Refer to Gear Block Section P 182 12 5 11 7 Check the Cutter Position Sensor CN6 KX FT987 only 2 Sensor is Ref No 182 Refer to Gear Block Section P 182 ...

Page 125: ...125 KX FT981LA B KX FT987LA B 12 5 12 CIS Contact Image Sensor Section Refer to Scanning Block P 24 REFERENCE Test Mode P 54 ...

Page 126: ...126 KX FT981LA B KX FT987LA B 12 5 13 Thermal Head Section Refer to Thermal Head P 22 ...

Page 127: ...127 KX FT981LA B KX FT987LA B 13 Service Fixture Tools ...

Page 128: ...128 KX FT981LA B KX FT987LA B 14 Disassembly and Assembly Instructions Note Please remove the Paper Stacker KX FT987 only and Recording Paper before disassembling ...

Page 129: ...129 KX FT981LA B KX FT987LA B 14 1 Upper Cabinet Section 14 1 1 How to Remove the Image Sensor CIS and Feed Roller ...

Page 130: ...130 KX FT981LA B KX FT987LA B 14 1 2 How to Remove the Cutter Unit KX FT987 only ...

Page 131: ...131 KX FT981LA B KX FT987LA B 14 1 3 How to Remove the Lock Lever and Thermal Head ...

Page 132: ...132 KX FT981LA B KX FT987LA B 14 2 Lower Cabinet Section 14 2 1 How to Remove the Bottom Frame ...

Page 133: ...133 KX FT981LA B KX FT987LA B 14 2 2 How to Remove the P C Boards and Power Cord ...

Page 134: ...134 KX FT981LA B KX FT987LA B 14 2 3 How to Remove the Gear Block and Separation Roller 14 2 4 How to Remove the Motor of Gear Block ...

Page 135: ...135 KX FT981LA B KX FT987LA B 14 3 Operation Panel Section 14 3 1 How to Remove the Operation Panel Block ...

Page 136: ...136 KX FT981LA B KX FT987LA B 14 3 2 How to Remove the Operation Board LCD and Platen Roller ...

Page 137: ...137 KX FT981LA B KX FT987LA B 14 3 3 How to Remove the Separation Rubber Flap ...

Page 138: ...138 KX FT981LA B KX FT987LA B 14 4 Installation Position of the Lead Wires ...

Page 139: ...139 KX FT981LA B KX FT987LA B ...

Page 140: ...pying self testing and 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 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 eq...

Page 141: ...e the Lock Lever and Thermal Head P 131 5 Sensors Cover open Paper sensor SW101 Hook sensor SW102 Jam sensor SW103 Document top sensor SW338 Document set sensor SW339 See Component Locations P 140 6 Glass If the glass is dirty clean them with a dry soft cloth Refer to Document Feeder Scanner Glass Cleaning P 149 7 Abnormal wear and tear or loose parts Replace the part Check if the screws are tight...

Page 142: ...ing 15 2 1 Mode Selection When 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 ...

Page 143: ...Swing Gear A 1 controls the mode opera tion 15 2 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 15 2 2 2 RX Mode Swing Gear B engages Gear RX and conveys its drive power to the Platen Roller Gear for printing the received data Fig C RX mode ...

Page 144: ...th the Separation Roller Gear and the Platen Roller Gear for feeding documents and recording paper in the copying operation Fig D Copy mode 15 2 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 ...

Page 145: ...15 2 2 5 Cutter Mode KX FT987 only Swing gear C engages the gear cutter and conveys its drive power to cutter unit for cutting recording paper Fig F Cutter mode 15 2 3 Mechanical Movements in the Main Operations 15 2 3 1 Idle Status ...

Page 146: ...146 KX FT981LA B KX FT987LA B 15 2 3 2 Scanning REFERENCE Sensor Section P 123 15 2 3 3 Printing Note See Sensors and Switches P 26 ...

Page 147: ...147 KX FT981LA B KX FT987LA B 15 2 3 4 Copying REFERENCE Sensor Section P 123 ...

Page 148: ... to step 3 For KX FT987 Pull the cutter release lever forward The paper cutter will be released 3 Remove the recording paper 4 Cut off the wrinkled portion 5 Install the recording paper and close the top cover securely by pushing down on both sides See page Installing the Recording Paper P 50 Note Make sure the paper stacker is inserted KX FT987 only ...

Page 149: ...cuments frequently misfeed Smudges or black white lines appear on the original docu ment when sending or copying 1 Disconnect the power cord and the telephone line cord 2 Open the top cover by pressing the top cover release but ton 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 white plate and sc...

Page 150: ... cord 2 Open the top cover by pressing the top cover release but ton and remove the recording paper 3 Clean the thermal head with a cloth moistened with isopropyl rubbing alcohol and let all parts 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 4 Connect the power cord and the telephone line cord 5 Install ...

Page 151: ...151 KX FT981LA B KX FT987LA B 16 Miscellaneous 16 1 Terminal Guide of ICs Transistors and Diodes 16 1 1 Digital Board 16 1 2 Analog Board 16 1 3 Operation Board ...

Page 152: ...152 KX FT981LA B KX FT987LA B 16 1 4 Power Supply Board ...

Page 153: ...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 its pins first and then cut off the pins thoroughly 3 While the solder melts remove it together with the IC pins When you attach a new IC to the board remove all solder left on the land with some tools like a s...

Page 154: ...154 KX FT981LA B KX FT987LA B 16 3 Test Chart 16 3 1 ITU T No 1 Test Chart ...

Page 155: ...155 KX FT981LA B KX FT987LA B 16 3 2 ITU T No 2 Test Chart ...

Page 156: ...A8 A12 RB2 A10 A9 RB4 RB5 RB3 2 5VD 3 3VD 3 3VD 10k RA3 1 2 3 4 4 7k R10 100 R5 F1 1 2 820 R8 R12 1 5K 1 2W IC7 1 I1 2 I2 3 I3 4 I4 5 I5 6 I6 7 I7 8 GND 9 COMMON 10 O7 11 O6 12 O5 13 O4 14 O3 15 O2 16 O1 CN3 1 COM 2 RM3 3 RM2 4 RM1 5 RM0 6V D12 D13 DG CN4 1 COM 2 LATCH 3 STB1 4 GND 5 3 3V 6 R1 7 R2 8 GND 9 TM 10 CLOCK 11 GND 12 STB2 13 DATA 14 COM Q7 1 S1 2 S2 3 S3 4 G 5 D1 6 D2 7 D3 8 D4 24V 5 6k...

Page 157: ...XE 125 TM0 126 VDD2 5V4 127 VSS11 128 TM1 129 TM2 130 TM3 131 TXE 132 KSTART 133 KLATCH 134 KSCLK 135 KTXD 136 KRXD 137 FMEMCLK 138 FMEMDI 139 ADSEL1 140 VDDA2 5 141 VREFB 142 VCL 143 VREFT 144 VSSA2 IC3 1 VIN 2 VSS 3 VOUT 5 ON OFF 4 VDOUT DG 4 7 R23 3 3VD 100n C23 DG 43k R17 20k R18 1n C18 2 2n C19 DG X1 R26 NC 100n C32 DG 3 3V BATIN 470 R31 1n C38 100n C22 1n C24 IC15 3 VOUT 1 VSS 2 VIN 1u C9 1u...

Page 158: ...90 DG 24VA 6VA 100n C85 5V 5V DG 6VA 6VA C86 NC C62 NC CN9 1 SP 2 SP R75 NC 3 3VD D0 D1 D2 D3 D7 D5 D4 D6 C83 NC R64 NC IC10 1 IO1 2 OI1 3 OI2 4 IO2 5 CONT2 6 CONT3 7 VSS 8 IO3 9 OI3 10 OI4 11 IO4 12 CONT4 13 CONT1 14 VDD 2 7k R47 1 8k R48 2 2n C53 820k R44 27k R43 1M R45 2 2n C58 C59 NC 560k R50 6 8k R54 3 3k R55 3 3M R61 18k R68 120k RA10 1 2 3 4 IC9 5 6 7 IC9 3 2 1 IC9 4 V 8 V L3 NC L2 NC RD WR...

Page 159: ...0 IA1_TXSIN 21 IA1_STROBE 22 IA1_RESET 23 Reserved3 24 IA_AVSS1 25 Reserved4 26 Reserved5 27 Reserved6 28 Reserved7 29 Reserved8 30 Reserved9 31 Reserved10 32 Reserved11 33 Reserved12 34 Reserved13 35 Reserved14 36 Reserved15 37 Reserved16 38 Reserved17 39 Reserved18 40 Reserved19 41 Reserved20 42 Reserved21 43 Reserved22 44 Reserved23 45 Reserved24 46 IA_AVSS2 47 IA1_RXP 48 Reserved25 49 IA1_HSMI...

Page 160: ...10 A9 RB4 RB5 RB3 2 5VD 3 3VD 3 3VD 10k RA3 1 2 3 4 4 7k R10 100 R5 F1 1 2 820 R8 R12 1 5K 1 2W IC7 1 I1 2 I2 3 I3 4 I4 5 I5 6 I6 7 I7 8 GND 9 COMMON 10 O7 11 O6 12 O5 13 O4 14 O3 15 O2 16 O1 CN3 1 COM 2 RM3 3 RM2 4 RM1 5 RM0 6V D12 D13 DG CN4 1 COM 2 LATCH 3 STB1 4 GND 5 3 3V 6 R1 7 R2 8 GND 9 TM 10 CLOCK 11 GND 12 STB2 13 DATA 14 COM Q7 1 S1 2 S2 3 S3 4 G 5 D1 6 D2 7 D3 8 D4 24V 5 6k R9 DG 100n ...

Page 161: ...XE 125 TM0 126 VDD2 5V4 127 VSS11 128 TM1 129 TM2 130 TM3 131 TXE 132 KSTART 133 KLATCH 134 KSCLK 135 KTXD 136 KRXD 137 FMEMCLK 138 FMEMDI 139 ADSEL1 140 VDDA2 5 141 VREFB 142 VCL 143 VREFT 144 VSSA2 IC3 1 VIN 2 VSS 3 VOUT 5 ON OFF 4 VDOUT DG 4 7 R23 3 3VD 100n C23 DG 43k R17 20k R18 1n C18 2 2n C19 DG X1 R26 NC 100n C32 DG 3 3V BATIN 470 R31 1n C38 100n C22 1n C24 IC15 3 VOUT 1 VSS 2 VIN 1u C9 1u...

Page 162: ...45 NC C58 NC 560k R50 6 8k R54 3 3k R55 3 3M R61 18k R68 120k RA10 1 2 3 4 IC9 5 6 7 IC9 3 2 1 IC9 4 V 8 V L3 NC L2 NC 220n C54 82k R67 120k R58 4 7k RA11 1 2 3 4 5 6 7 8 5V CN2 1 5V 2 DG 3 RLY 4 HOOK 5 LINERX 6 LINETX 7 HSRX 8 HSTX 9 BELL CPC 10 PAPER 11 JAM 12 R84 NC R85 NC R86 NC 4 7k RA6 1 2 3 4 C64 56p Q15 B C E Q16 B C E Q17 NC B E C C89 82p L5 L4 110k R89 100n C59 TONE1 TONE1 ASIC_VOL_IN AS...

Page 163: ...8 PIA_RESET 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_RESET 23 IA2_SCLK 24 IA_AVSS1 25 IA2_CLKIN 26 IA2_CNTRL_SIN 27 IA2_TESTC 28 IA2_RXOUT 29 IA2_TXSIN 30 IA2_STROBE 31 IA2_RESET 32 IA2_RXP 33 Reserved1 34 IA2_HSMICP 35 IA2_HSMICM 36 IA2_HSMIC...

Page 164: ...W103 4 3 1 2 SW101 3 4 1 2 AG AG AG AG AG SW102 1 3 2 4 6 5 PC104 NC 1 2 3 4 Q107 NC AG AG R157 NC D113 NC C139 NC R158 NC Q108 NC R159 NC R160 NC 5V 5V R149 NC C142 NC CN101 1 5V 2 AG 3 RLY 4 HOOK 5 LINERX 6 LINETX 7 HSRX 8 HSTX 9 BELL CPC 10 PAPER 11 JAM 12 R161 NC R162 NC R163 NC 560p C104 560p C105 16k R109 16k R110 5 6n C107 4 7n C110 5 6k R112 39n C111 270k R108 100n C116 43k R118 L106 8 2k ...

Page 165: ... NC 10n C135 10n C132 10n C131 4 7n C124 C122 NC C133 NC 100p C126 5V AG R146 NC D107 NC D105 NC T102 NC 5 3 2 4 1 D110 NC 2 1 3 L113 L114 L111 L112 L109 L110 L107 L108 R154 NC R153 NC R137 NC R125 NC R150 NC IC101 5 6 7 R140 NC C127 NC SA102 1000V D112 A K CN103 1 2 CN104 1 2 AG AG Q105 B C E D111 2 1 3 R155 NC R156 NC ZNR101 NC C140 NC C141 NC POS101 120 2W R127 R131 0 1u C136 15k 1 2W R133 750k...

Page 166: ...21 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 COPY SW302 MENU SW331 PLAYBACK SW336 5V 5V 5V 5V 5V SW339 4 3 1 2 0 R319 0 R320 0 R321 0 R322 0 R323 1k R308 330p C309 Q301 NC 5V C308 NC SW334 SKEY 4 SW320 REDIAL PAUSE R330 NC R331 NC R315 NC ...

Page 167: ...1000p 1k D201 T101 C122 0 22 D110 47k R112 R110 22 R106 47k R201 47 R221 D205 1k R224 5 6k VR201 4 7k R230 150 2 R231 150 2 R234 47k R233 47k R232 15k 22k 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 470 R101 1M R102 1M R103 1M R122 1 5k KX FT981LA B KX FT987LA B POWER SUPPLY BOARD D105 L102 L1...

Page 168: ...168 KX FT981LA B KX FT987LA B MEMO ...

Page 169: ...34 L4 L5 C46 CN8 1 7 E E Q14 C50 RA8 Q13 C67 C63 R52 R37 C47 C60 C56 IC16 IC6 16 1 3 4 5 1 C44 1 8 CN10 R32 IC2 1 2 7 1 CN11 CN7 C100 C99 R87 R76 R88 C98 R73 C94 C1 R82 R83 L1 R2 16 1 9 8 C35 16 17 1 32 28 1 15 14 RA3 IC4 CN3 CN5 CN6 1 2 1 2 14 R12 CA8 RA2 R1 F1 R8 1 1 5 CN4 D13 D12 D11 C2 C3 Q1 Q7 5 8 4 1 C5 R9 E E Q2 R6 CN1 8 1 R14 C11 C12 C90 BOND X1 32 7 C32 C31 C33 R26 C28 C13 R5 C6 C48 C4 BA...

Page 170: ... C66 C61 R46 AMON 1 E C10 PNLB1001Z A etc 1 8 6V C9 DG 24V 1 CA9 IC3 5 4 R11 R7 3 E E E E R24 CA2 R20 144 CA3 8 Q6 Q5 Q4 PbF 24VF R10 D14 R27 2 5V BAT 3 3V BAT Q11 C30 R28 9 1 14 1 5 2 1 2 1 7 1 1 2 RA1 CA1 16 1 C23 C19 C18 R16 R17 R18 CA11 C22 IC1 C24 109 R15 C16 Q10 R19 R23 3 3VD C20 R21 R22 C17 RESET C26 108 C34 RD WR ROMCS CE2 MFCS RB4 A9 A10 A12 A11 CE1 RB6 RB3 RB1 RB0 RB2 RB5 C37 1 3 4 5 IC1...

Page 171: ...W101 SW103 C101 C102 J115 D101 J123 J117 C134 J122 J124 J120 J119 J110 J121 J116 J127 J118 J111 J112 J113 J114 PCB CH 1 12 AUTO CH SW102 J128 J101 J107 J108 J102 C123 C139 C125 R159 R133 JJ105 JJ106 J103 PC104 R122 J105 PC103 PC102 J104 T102 R137 R114 T101 C136 RLY101 D112 CN102 R131 R146 J109 Q108 C140 C141 J106 ZNR101 R127 PbF PNLB1002Z A D113 D107 D108 D105 D106 D104 C113 JJ109 CN101 ...

Page 172: ...26 R124 C117 D109 R149 C142 Q106 L109 L110 L108 L107 C115 R141 C133 R153 R117 R154 R157 R116 C122 R155 R156 D110 Q112 Q107 R162 R163 R110 C106 R106 C104 C103 C108 R109 C138 C114 C116 R113 C111 R145 C120 R129 C126 R130 C121 R107 C105 L104 R138 R142 C129 C130 R139 R125 R118 R103 R101 R102 C112 L105 R105 R128 R119 R121 C118 C109 R112 C110 L106 R111 R108 C107 5V AG RLY HOK LRX LTX HRX HTX PPR JAM B CP...

Page 173: ...31 CN301 7 1 MENU SW324 SW325 SW327 SW328 SW329 SW326 SW322 SW323 SW321 SET JJ315 C303 JJ316 JJ314 JJ319 JJ318 JJ311 JJ310 JJ309 JJ308 JJ306 JJ313 JJ305 JJ304 JJ303 JJ320 JJ301 JJ307 S3 S2 S1 BROADCAST CN302 1 10 JJ302 SW317 JJ317 MUTE SW318 REDIAL PAUSE SW320 FLASH SW319 JJ312 SW314 SW315 SW313 SW316 SW311 SW312 SW310 SW309 SW304 SW308 SW307 SW306 SW302 SW301 SW303 SW305 3 6 9 0 8 5 2 1 4 7 PbF P...

Page 174: ...22 33 34 11 12 C311 C309 R310 R308 R301 R302 R304 R307 R303 C305 C309 C301 R306 7 1 R305 C302 C304 C310 C306 C307 C308 R311 R314 44 1 OPERST KSCLK SDATA KSTART GND KLATCH 5V SW338 BLACK WHITE R325 SW339 PbF PNLB1003Z a A 3 R328 R329 C319 C315 C316 R322 R315 R326 R319 R320 R321 C318 C317 R316 R312 R313 C313 R314 R323 R324 R327 R331 R330 C320 10 1 R317 E ...

Page 175: ...1908UC SEE 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 BLACK BROWN WHITE BLUE L101 ...

Page 176: ...pendix Information of Schematic Diagram Note 1 DC voltage measurements are taken with an oscilloscope or a tester with a ground 2 The schematic diagrams and circuit board may be modified at any time with the development of new technology ...

Page 177: ...177 KX FT981LA B KX FT987LA B 20 Exploded View and Replacement Parts List 20 1 Cabinet and Mechanical Parts Location ...

Page 178: ...178 KX FT981LA B KX FT987LA B 20 1 1 Operation Panel Section KX FT981 ...

Page 179: ...179 KX FT981LA B KX FT987LA B 20 1 2 Operation Panel Section KX FT987 ...

Page 180: ...180 KX FT981LA B KX FT987LA B 20 1 3 Upper Cabinet Section ...

Page 181: ...181 KX FT981LA B KX FT987LA B 20 1 4 Lower Cabinet Section ...

Page 182: ...182 KX FT981LA B KX FT987LA B 20 1 5 Gear Block Section ...

Page 183: ...183 KX FT981LA B KX FT987LA B 20 1 6 Screws ...

Page 184: ...184 KX FT981LA B KX FT987LA B 20 1 7 Accessories and Packing Materials ...

Page 185: ...LIDER 20 PFKR1087Z1 DOCUMENT GUIDE RIGHT PS HB 21 PFKR1086Z1 DOCUMENT GUIDE LEFT PS HB 22 PFHX1762Z PLASTIC PARTS READ SHEET 23 PNKV1004Z1 COVER OPERATION PANEL PS HB 24 PFHG1210Z RUBBER PARTS SEPARATION 25 PFHR1504Y COVER SEPARATION HOLDER PS HB 26 PFUS1588Z BAR SPRING SEPARATION HOLDER 27 PFHR1503Y COVER SUPPORT DOCUMENT FEED PBT HB 28 PFUS1631Z COIL SPRING DOCUMENT SUP PORT 29 PNJS071008Z CONNE...

Page 186: ...ITE CORE 107 PQHR945Z BAND 108 PNDE1006Z1 LEVER JAM SENSOR ABS HB 109 PFJS08M53Z CONNECTOR 8 PIN 110 PFDR1072Y ROLLER SEPARATION POM HB 111 PFUS1786Z COIL SPRING PAPER SENSOR 112 PNDE1005Z1 LEVER PAPER SENSOR ABS HB Safe ty Ref No Part No Part Name Description Remark s 150 PFDG1447Z GEAR TX4 POM HB 151 PFDG1444Z GEAR TX1 POM HB 152 PFDG1446Z GEAR TX3 POM HB 153 PFDG1445Z GEAR TX2 POM HB 154 PFDG14...

Page 187: ...A5 EXB24V332JX RESISTOR ARRAY RA6 EXB24V472JX RESISTOR ARRAY Safe ty Ref No Part No Part Name Description Remark s RA7 EXB24V223JX RESISTOR ARRAY RA8 EXB28V332JX RESISTOR ARRAY RA9 D1H84724A013 RESISTOR ARRAY S RA10 EXB24V124JX RESISTOR ARRAY RA11 D1H84724A013 RESISTOR ARRAY S CA2 F5A421040004 CAPACITOR ARRAY CA3 F5A421040004 CAPACITOR ARRAY CA4 F5A421040004 CAPACITOR ARRAY CA5 F5A421040004 CAPACI...

Page 188: ...000014 10 C91 ECUE1A104KBQ 0 1 C95 ECUE1H102KBQ 0 001 C101 ECUE1A104KBQ 0 1 Safe ty Ref No Part No Part Name Description Remark s C102 ECUE0J105KBQ 1 C103 ECUE0J105KBQ 1 Safe ty Ref No Part No Part Name Description Remark s PCB1 PNWP1FT987LA DIGITAL BOARD ASS Y RTL ICs IC1 C1ZBZ0003300 IC IC2 PNWIFT987LA IC FLASH ROM IC3 C0CBCBD00047 IC IC4 C3ABKY000001 IC IC5 C1CB00002305 IC IC6 C3FBKC000135 IC I...

Page 189: ... 33k R65 ERJ2GEJ220 22 R66 ERJ2GEJ224 220k R67 ERJ2GEJ823 82k R68 ERJ2GEJ183 18k R69 ERJ2GEJ224 220k R70 ERJ2GEJ473 47k Safe ty Ref No Part No Part Name Description Remark s R71 ERJ2GEJ103 10k R72 ERJ2GEJ682 6 8k R73 ERJ2GEJ681 680 R76 ERJ2GEJ681 680 R78 ERJ2GEJ563 56k R79 ERJ2GE0R00 0 R83 ERJ2GEJ473 47k R87 ERJ2GE0R00 0 R88 ERJ2GE0R00 0 R89 ERJ2GEJ114 110k CAPACITORS C1 ECUE1C104ZFQ 0 1 C2 ECUV1H...

Page 190: ...00005 RELAY VARISTORS Safe ty Ref No Part No Part Name Description Remark s SA101 PFRZRA311P6T VARISTOR SurgeAbsorber S SA102 PFRZRA102P6T VARISTOR SurgeAbsorber S TRANSFORMER T101 G4AYA0000016 TRANSFORMER RESISTORS L106 ERJ3GEY0R00 0 R101 ERJ3GEYJ103 10k R102 ERJ3GEYJ103 10k R103 ERJ3GEYJ220 22 R106 ERJ3GEYJ333 33k R107 ERJ3GEYJ333 33k R108 ERJ3GEYJ274 270k R109 ERJ3GEYJ163 16k R110 ERJ3GEYJ163 1...

Page 191: ... K0H1BA000259 SPECIAL SWITCH KX FT987 only SW338 K0L1AA000002 PUSH SWITCH DOC TOP SEN SOR SW339 K0L1BA000095 PUSH SWITCH DOC SET SEN SOR RESISTORS R303 ERJ3GEYJ181 180 R304 ERJ3GEYJ332 3 3k R305 ERJ3GEYJ181 180 R306 ERJ3GEYJ181 180 R307 ERJ3GEYJ680 68 R308 ERJ3GEYJ102 1k R309 ERJ3GEY0R00 0 R310 ERJ3GEYJ472 4 7k R311 ERJ3GEYJ472 4 7k R312 ERJ3GEYJ183 18k R313 ERJ3GEYJ102 1k R314 ERJ3GEYJ821 820 R31...

Page 192: ...192 KX FT981LA B KX FT987LA B K N KXFT981LAB KXFT987LAB ...

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