Panasonic KX-FT21RS User Manual

© 1999 Kyushu Matsushita Electric Co., Ltd. Allrights reserved. Unauthorized copying anddistribution is a violation of law.KX-FT21RS(Russia)PARSONAL F

1.12. CONNECTIONSNOTEWhen you operate this products, the power outlet should be near the product and easily accessible.10KX-FT21RS

6.3. CONTROL SECTION6.3.1. BLOCK DIAGRAMTOCISTOTHERMAL HEADCLK, SIGSTBI-2,THLATTHCLK,THDAT5V(IC4)RESETBACK UPROM (IC2)A0-17D0-7RDKSTART,KLATCH,KSCLK,K

6.3.2. ASIC (IC1)This custom IC is used for general FAX operations. 1. CPUThis model uses a Z80 equivalent CPU operating at 6MHz.Many of the peripher

Pin Pin Name Buffer Power supply 5V Tolerant Signal Name I/O Description26 IRDATXD/IOP81 3.3V YES OPEN O Not used27 IRDARXD/IOP80 3.3V YES OPEN O Not

Pin Pin Name Buffer Power supply 5V Tolerant Signal Name I/O Description93 TEST3 3.3V NO +3.3V Test pin. fixed High94 XOUT 3.3V - XOUT 24MHz oscillato

Pin Pin Name Buffer Power supply 5V Tolerant Signal Name I/O Description160 STB2 MULT3/5 NO STB2 O Thermal head strobe 2161 STB3 MULT3/5 NO OPEN O Not

6.3.3. ROM (IC2)This 128 KB ROM (OTPROM or MASKROM) has 32 KB of common area and bank area (BK4~BK15).The capacity of each bank is 8 KB.The addresses

6.3.6. SRAM and RTC BACK UP CIRCUIT 1. FunctionThis unit has a lithium battery (BAT1) which works for the RAM (IC3) and Real Time Clock (RTC, Integra

6.3.7. SUPERVISION CIRCUIT FOR THE THERMAL HEAD TEMPERATURE 1. FunctionThe thermistor changes the resistor according to the temperature and uses the t

6.3.8. LED ARRAY(CIS)The LED ARRAY will light during transmission and copying as a light source to recognize document characters, patterns, orgraphics

6.4. FACSIMILE SECTION6.4.1. IMAGE DATA FLOW DURING FACSIMILE OPERATIONCOPY (Fine, Super-Fine, Half Tone) 1. Line information is read by CIS, via rou

1.13. INSTALLATION1.13.1. INSTALLING THE RECORDING PAPEROpen the cover by pressing the cover open buttonand install the recording paper roll. If the

6.4.2. Block DiagramIC3RAMIC2ROM(11)(12)SYSTEMBUSAnalogFront/EndNCUTEL.LINEP/SCONVERTERTHERMALHEAD(15)(14)CPURAMMODEMIMAGEPROCESSINGSECTIONADANALOGSIG

6.4.3. THERMAL HEAD 1. FunctionThis unit utilizes state of the art thermal printer technology.The recording paper (roll paper) is chemically processe

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6.4.4. SCANNING BLOCKThe scanning block of this device consists of a control circuit and a contact image sensor made up of a celfoc lens array, an LE

6.4.5. STEPPING MOTOR DRIVE CIRCUIT 1. FunctionOne individual stepping motor is used for transmission and reception. It feeds the document or recordin

6.4.6. GEAR SECTIONThis section shows how the motor-driven gear mechanism works in the main operations: FAX transmission, FAX reception themotor and

6.4.6.2. Mode OperationOnce a mode is selected, the Drive Motor Gear rotates clockwise (CW) and then the Swing Gear A-1 controls the mode operation.A:

6.4.6.3.2. Scanning6.4.6.3.3. PrintingNote:See 6.5. SENSERS AND SWITCHES.117KX-FT21RS

6.4.6.3.4. Copying118KX-FT21RS

6.5. SENSORS AND SWITCHESAll of the sensor and switches are shown below.Sensor CircuitLocationSensor Sensor or Switch Name Message ErrorDigital SW3 Mo

1.13.3. SETTING YOUR LOGOThe logo can be your company, division or name.Press MENU . Display: SYSTEM SET UPPress # ,

6.5.1. Motor Position SensorThis sensor is a detection switch for recording the position of the CAM.Digital BoardSignal (IC1-174 Pin)Home position Low

6.5.3. Read Position Sensor (PS2)When a document is brought to the read position, the shelter plate passes the sensor light, the photo transistor beco

6.6. MODEM SECTION6.6.1. FUNCTIONThe unit uses a 1 chip modem (IC1), enabling it to act as an interface between the control section for FAX sending an

Phase D is the procedure for confirming that the message is completed and received. For continuous transmission, phase Bor phase C are repeated for tr

Explanation of SignalsControl signals are comprised mainly of 8-bit identification signals and of the data signals added to them. Data signals areadde

Bit No. DIS/DTC DCS17, 18(0, 0)(0, 1)(1, 0)(1, 1)Recording width capabilities1728 picture elements along scan line length of215 mm ± 1%1728 picture el

Note 2 - Standard facsimile units conforming to T.3 must have the following capability: Index of cooperation (IOC)=264.Note 3 - Standard facsimile uni

b. Redundancy Compression Process Coding ModeThis unit uses one-dimensional MH format.127KX-FT21RS

6.6.2. MODEM CIRCUIT OPERATIONThe ASIC (IC1) has all the hardware satisfying the ITU-T standards mentioned previously.The modem is included in IC1. Th

6.7. Analog Unit Block DiagramC228C229Analog BoardDigital BoardR232R233R235R234R18R19PC5T101RLY1LF1+24VD637524+5VDPC1Q4Q7R15R12R13 C9C8Q3POS1CN1CN2SA1

1.13.4. To select characters with the dial keypadPressing the dial keys will select a character as shown below.1.13.5. Documents you can sendNote:Remo

6.8. NCU SECTION6.8.1. GENERALThis section is the interface between the telephone line and external telephone. It is composed of an EXT. TEL Line rela

6.8.5. LINE AMPLIFIER AND SIDE TONE CIRCUITS 1. Circuit OperationThe reception signal received as output from line transformer T101 is given as input

6.9. ITS (Integrated telephone System) and MONITOR SECTION6.9.1. GENERALDuring the monitor operation, the speaker output passes through the power ampl

6.10. EXT. TELEXT. TEL JACK is provided for the external TEL connection.Connect the telephone to the EXT. TEL JACK. Because the unit (FT21) has the pr

6.10.1. Circuit DiagramC228C229Analog BoardDigital BoardR232R233R235R234R18R19PC5T101RLY1LF1+24VD637524+5VDPC1Q4Q7R15R12R13 C9C8Q3POS1CN1CN2SA1F1SA2Q2

6.11. OPERATION PANELThe unit consists of an LCD (Liquid crystal display), KEYs, photo interrupters (sensor), and analog switches (for key scan).The k

6.11.2. SENSOR DETECTIONWhen CN1(8) (OPSEL) is "L", the detection of the document sensor and read start position sensor are available.6.11.3

6.12. POWER SUPPLY BOARD SECTIONThis power supply board uses the switching regulator method.[Input Circuit]The input current goes into the input recti

The following is an overview of how the power supply unit is controlled.The control method of this power supply unit is pulse width modulation.When Q1

[Surge Absorber Circuit]This circuit is for absorbing surge voltage generated by the transformer.[Control Circuit and Detecting Circuit]The control ci

1.14. MAINTENANCE ITEMS AND COMPONENT LOCATIONS1.14.1. OUTLINEMAINTENANCE AND REPAIRS ARE PERFORMED USING THE FOLLOWING STEPS. 1. Periodic maintenance

7 FOR THE SCHEMATIC DIAGRAMSNote: 1. DC voltage measurements are taken with an oscilloscope or a tester with a ground. 2. The schematic diagrams and c

8 PRINTED CIRCUIT BOARD8.1. PRINTED CIRCUIT BOARD (DIGITAL BOARD): COMPONENT VIEWPIN1L19CN6 CN7F3D3Q7R64C1218916C6C4C1120816263L17C15C18C40R93R95R110R

8.2. PRINTED CIRCUIT BOARD (DIGITAL BOARD): BOTTOM VIEWC68C71R74C765841C74R73D2D4C90R77R78R82Q9L18R85R86R65R98J2J3C2C8C3R2R80C41IC5IC314 115 2818169C3

8.3. PRINTED CIRCUIT BOARD (ANALOG BOARD): COMPONENT VIEWJP8D104D103D2SW201SW202RLY1R19R18R21C11C15SA1SA2POS1ZNR1L6L5F1L1D6JP6D5PC4PC5PC1C230C231C106C

8.4. PRINTED CIRCUIT BOARD (ANALOG BOARD): BOTTOM VIEWPFUP1182ZAC209C210R209R219R215L203R222Q203Q204Q101IC201IC102R1228514Q201R207R208C216R220R216R223

8.5. PRINTED CIRCUIT BOARD (SWITCHING POWER SUPPLY)CAUTIONFOR CONTINUED PROTECTION AGAINST RISK OFFIRE. REPLACE ONLY WITHSAME TYPEANDRATINGSOF FUSE

8.6. PRINTED CIRCUIT BOARD (OPERATION BOARD)SW6SW22SW29SW14SW3SW7SW13SW28 SW18SW10SW17SW2SW24SW21 SW25J42 J41J32J37J15J16J2J29J22J14J19J35J34J38J21J20

9 SCHEMATIC DIAGRAM9.1. SCHEMATIC DIAGRAM (DIGITAL CIRCUIT)CIS LED ARRAYON: 3.3VT53.3V0VT4T3T2OFF: 0VMOTOR ON: 3.3VOFF: 0VPRINTINGLATCHSTB1THERMALHEAD

9.2. SCHEMATIC DIAGRAM (ANALOG CIRCUIT)FAX RX, TEL TALK2VFAX RX, HANDSET TXNO PAPER: 5VPAPER: 0VFAX TXFAX RX12V2V2.1V0V3.3VLINE ON/OFF, DIALPULSEBELL

9.3. SCHEMATIC DIAGRAM (SWITCHING POWER SUPPLY)D102C102 0.1D202IC202PC101R223100C2051/(50V)CN3011234567824V24V24VGNDGNDGND5VGNDC202D201T101TRANS1000p/

1.14.2.1. MAINTENANCE LIST1.14.2.2. MAINTENANCE CYCLE15KX-FT21RS

9.4. SCHEMATIC DIAGRAM (OPERATION CIRCUIT)OV/3.3V/5V5V0V5V0V5V0VPAPER 5VDocumentsensorsensorNO PAPER 0VReadposition5V0VSENSOR SCAN 5VKEY SCAN 0VKX-FT2

10 TERMINAL GUIDE OF THE IC´S TRANSISTORS ANDDIODES151KX-FT21RS

11 FIXTURES AND TOOLS152KX-FT21RS

12 CABINET, MECHANICAL AND ELECTRICAL PARTSLOCATION12.1. OPERATION PANEL SECTION153KX-FT21RS

12.2. UPPER CABINET SECTION154KX-FT21RS

12.3. LOWER CABINET/P.C.B. SECTION155KX-FT21RS

12.4. MOTOR SECTIONNote:Make sure that Gears 1, 2 and 3 are installed face up. (The product number is put on the face.)156KX-FT21RS

12.5. ACTUAL SIZE OF SCREWS AND WASHER157KX-FT21RS

13 ACCESSORIES AND PACKING MATERIALS158KX-FT21RS

This replacement parts list is for KX-FT21RS only.Refer to the simplified manual (cover) for other areas.Notes: 1. The marking (RTL) indicates that th

1.14.3. MAINTENANCE1.14.3.1. CLEANING THE DOCUMENT FEEDER UNITIf misfeeding occurs frequently or if dirty patterns or black bands appear on a copied o

Ref.No.Part No. Part Name & Description Remarks108 PFDE1097Z LEVER PAPER SENSOR109 PFUS1214Z SPRING, EARTH110 KR06TT251508 FFERRITE CORE111 PQLB1E

Ref.No.Part No. Part Name & Description Remarks(RESISTORS)J2 ERJ3GEY0R00 0J4 ERJ3GEY0R00 0J5 ERJ6GEY0R00 0J6 ERJ6GEY0R00 0J7 ERJ6GEY0R00 0J8 ERJ8G

Ref.No.Part No. Part Name & Description RemarksC1 ECUV1H104ZFV 0.1 SC2 ECUV1H104ZFV 0.1 SC3 ECUV1H104ZFV 0.1 SC4 ECUV1C104KBV 0.1C6 ECUV1H104ZFV 0

Ref.No.Part No. Part Name & Description Remarks(PHOTO ELECTRIC TRANSDUCERS)PC1 PQVIPS2532-1 PHOTO ELECTRIC TRANSDUCER SPC5 PQVIPC814K PHOTO ELECTR

Ref.No.Part No. Part Name & Description RemarksC114 ECUV1C104KBV 0.1C115 ECUV1H332KBV 0.0033C116 ECUV1H103KBV 0.01C117 ECUV1H102KBV 0.001C120 ECEA

Ref.No.Part No. Part Name & Description RemarksSW26 EVQ11Y05B SPECIAL SWITCHSW27 EVQ11Y05B SPECIAL SWITCHSW28 EVQ11Y05B SPECIAL SWITCHSW29 EVQ11Y0

Ref.No.Part No. Part Name & Description Remarks(OTHERS)T101 ETS29AK428AC TRANSFORMERTH101 PFRRT09L8R2F THERMISTOR S14.6. FIXTURES AND TOOLSRef.No.

1.14.3.2. CLEANING THE THERMAL HEADIf dirty patterns or black bands appear on a copied or received document, clean the thermal head.Cover openbuttonT

2 TROUBLESHOOTING GUIDE2.1. TROUBLESHOOTING SUMMARY2.1.1. TROUBLESHOOTINGAfter confirming the problem by asking the user, troubleshoot according to th

2.2. USER RECOVERABLE ERRORSIf the unit detects a problem, the following messages will appear on the display.Note:The explanations given in the [ ] ar

1 INTRODUCTION 3 1.1. SAFETY PRECAUTIONS 3 1.2. INSULATION RESISTANCE TEST 3 1.3. FOR SERVICE TECHNICIANS 3 1.4. BATTERY CAUTION 3 1.5. AC CAUTION 4

2.2.1. Document JamIf the unit does not release the document during feeding, remove the jammed document as follows.Open the cover by pressing the cove

2.3. TROUBLESHOOTING DETAILS2.3.1. OUTLINETroubleshooting guide provides a logical path of deduction to assist in locating a fault and suggests method

2.3.3. Simple Check List22KX-FT21RS

2.3.4. TROUBLESHOOTING ITEMS TABLE23KX-FT21RS

2.3.4.1. ADF (Auto Document Feed) Section 1. No document feed24KX-FT21RS

2. Paper JAM25KX-FT21RS

3. Multiple feedWhen using thick paper etc., If the document will not feed.Refer to 3.1. ADJUSTING THE FEED PRESSURE.26KX-FT21RS

4. Skew27KX-FT21RS

5. Image is distorted (When printing)28KX-FT21RS

6. Black or white vertical lines appear 7. Skewed receiving image29KX-FT21RS

1 INTRODUCTION1.1. SAFETY PRECAUTIONS 1. Before servicing, unplug the AC power cord to prevent an electric shock. 2. When replacing parts, use only th

8. Expander print (When printing) 9. When copying or printing, an abnormal sound is heard from the unit30KX-FT21RS

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2.3.4.2. Communication SectionFind the problem in the table shown below, and refer to the corresponding troubleshooting procedure in 2.3.4.2.1. Defect

2.3.4.2.1. Defective facsimile section 1. Transmit problem33KX-FT21RS

2. Sometimes there is a transmit problem34KX-FT21RS

3. Reception problemConfirm the following before starting troubleshooting.Is the recording paper installed properly?There is the receiving problem wh

4. The unit can copy, but cannot transmit/receive36KX-FT21RS

5. Unit can copy, but cannot transmit/receive long distance or international communicationsThe following 2 causes can be considered for this.Cause 1:

(Causes and Countermeasures)(Cause A)When a training signal is transmitted from FAX1 during the communication procedure at the time of transmission fr

6. The unit can copy, but the transmission and reception image is incorrect(Long distance or international communication operation)This depends widel

1.5. AC CAUTIONFor safety, before closing the lower cabinet, please make sure of the following precautions.4KX-FT21RS

7. How to output the Journal Report:40KX-FT21RS

TX=TRANSMISSION RX=RECEPTIONMost fax communication problems can be resolved by the following steps. a. Change the transmit level. (Service code: 596,

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1.6. PERSONAL SAFETY PRECAUTIONS1.6.1. MOVING SECTIONS OF THE UNITBe careful not to let your hair, clothes, fingers, accessories, etc., become caught

2.3.4.2.2. Remote programmingIf, after the call is connected, the customer describes the situation and it is determined that the problem can be correc

1. Entering the remote programming mode and changing service codes51KX-FT21RS

2. Program Mode TableCode Function Set Value Default Remote setting001 Set the date and time mm/dd/yy hh:mm --------- NG002 Your logo --------- -----

Code Function Set Value Default Remote setting994 Transmit journal report 1: START --------- OK996 Journal 3 1: START --------- OK999 Transmit service

2.3.4.3. Digital Board SectionOne of most difficult problems to deal with is when the system will not boot up.The symptom: No response when the power

2.3.4.3.1. Digital Block DiagramTOCISTOTHERMAL HEADCLK, SIGSTBI-2,THLATTHCLK,THDAT5V(IC4)RESETBACK UPROM (IC2)A0-17D0-7RDKSTART,KLATCH,KSCLK,KTXD,KRXD

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 th

Normal Wave Patterns57KX-FT21RS

For these reasons and the software sequence to boot up the unit, if you use an oscilloscope to judge whether a signal is OK or NG,you must check in th

After the power is turned on, the ASIC (CPU) initializes and checks each IC.The ROM, SRAM, and Modem are checked.If initialization fails for the ICs,

General · Desktop type · LCD (Liquid Crystal Display) readout · Help function · Copier functionFacsimile · Space Saving Compact Design

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NG Example61KX-FT21RS

2.3.4.3.2. Check the Status of the Digital BoardPut the unit in the test mode and check the voltage at lands A, B, C and D.62KX-FT21RS

2.3.4.4. Analog Board SectionThe analog parts check is actually different than the digital parts check. The signal route is determined by the purpose

1. Defective ITS (Integrated Telephone System) Section64KX-FT21RS

2.3.4.5. Power Supply Board Section 1. Key components for troubleshootingCheck the following parts first: F101, D101-D104, C106, Q101, PC101 and IC101

2. Troubleshooting Flow Chart66KX-FT21RS

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3. Broken parts repair details(D101, D102, D103, D104)Check for a short-circuit in terminal 4. If D101, D102, D103 and D104 are short-circuited, F101

2.3.4.6. Operation Board Section 1. No key operation 2. No LCD indication69KX-FT21RS

1.8. SPECIFICATIONSApplicable Lines: Public Switched Telephone NetworkDocument Size: Max. 216 mm (8 1/2”) in widthMax. 600 mm (23 5/8”) in lengthEffec

2.3.4.7. Sensor SectionRefer to 6.5. SENSORS AND SWITCHES for the circuit descriptions. 1. Check the document sensor (PS1)..."REMOV

2.3.4.8. Read SectionRefer to 6.4.4. SCANNING BLOCK.71KX-FT21RS

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2.3.4.9. Thermal Head SectionRefer to 6.4.3. THERMAL HEAD.73KX-FT21RS

2.4. PROGRAMMING AND LISTSThe programming functions are used to program the various features and functions of the machine, and to test the machine.Pro

2.4.3. USER MODE (The list below is an example of the SYSTEM SETUP LIST the unitprints out.)Note:The above values are the default values.75KX-FT21RS

2.4.4. SERVICE FUNCTION TABLECode Function Set Value Effective Range Default Remarks501 Setting the pause time 001~600 × 100 msec 001~600 05000 msec S

Code Function Set Value Effective Range Default Remarks718 Receive speed select 1:9600BPS2:7200BPS3:4800BPS4:2400BPS1~4 9600 BPS Adjusts the speed to

2.4.6. OTHER78KX-FT21RS

2.5. TEST FUNCTIONS79KX-FT21RS

1.10. CCITT No. 1 TEST CHART8KX-FT21RS

2.5.1. DTMF SIGNAL TONE TRANSMIT SELECTIONNote:After performing this check, do not forget to turn the setting off.Otherwise, dialing using DTMF will n

2.6. JOURNAL 3Descriptions: 1. ENCODECompression Code: MH/MR 2. MSLTMSLT means Minimum Scan Line Time. Used only at the factory. 3. RESOLUTIONIndicate

2.6.1. PRINTOUT EXAMPLE82KX-FT21RS

3 ADJUSTMENTS3.1. ADJUSTING THE FEED PRESSUREIf no feeding or multiple feeding occurs frequently, adjust the feeder pressure. 1. Open the front lid by

4 DISASSEMBLY INSTRUCTIONS84KX-FT21RS

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1.11. LOCATION OF CONTROLS1.11.1. OVERVIEW1.11.2. CONTROL PANEL9KX-FT21RS

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5 HOW TO REPLACE THE FLAT PACKAGE ICIf you do not have the special tools (for example: SPOT HEATER) to remove the SPOT HEATER´S Flat IC, if you have s

5.3. FLAT PACKAGE IC INSTALLATION PROCEDURE5.4. BRIDGE MODIFICATION PROCEDURE96KX-FT21RS

6 CIRCUIT OPERATIONS6.1. CONNECTION DIAGRAM+24V+24V+24VGNDGNDGND+5VNCCOMLATCHSTB1GNDVDDTHCLOCKGNDSTR2SICOMABNANBCOMOTORSENSORV.LEDG.LEDCLKGNDGNDGNDSTS

6.2. GENERAL BLOCK DIAGRAMThe control section will be explained as shown in the block diagram. 1. ASIC (IC1)Composed mainly of an address decoder, mod

6.2.1. General Block DiagramANALOG BOARDDIGITAL BOARDPOWER SUPPLYOPERATION PANELASICLINEEXT.TELBELLPAPERHOOKHANDSETSPEAKER+24V+5VRLYANALOGSWLCD SENSOR