Redundancy Compression Process Coding Mode | Panasonic KX-FT21RS

KX-FT21RS

b. Redundancy Compression Process Coding Mode

This unit uses one-dimensional MH format.

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Panasonic KX-FT21RS manual Redundancy Compression Process Coding Mode, This unit uses one-dimensional MH format 127

Contents

KX-FT21RS Contents Insulation Resistance Test Safety PrecautionsFor Service Technicians Battery Caution AC Caution Moving Sections of the Unit Personal Safety PrecautionsLive Electrical Sections Integrated telephone system FeaturesGeneral Facsimile Optional Accessories Specifications Ccitt No Test Chart Overview Location of ControlsControl Panel Connections Installing the Recording Paper InstallationDocument Stacker Press START/COPY/SET Setting Your Logo# , then Example Bill Documents you can send To select characters with the dial keypad Maintenance Check ITEMS/COMPONENT Locations Maintenance Items and Component LocationsOutline Maintenance List Maintenance Cycle Line cord Maintenance Cleaning the Document Feeder UnitDisconnect the power cord and the telephone Clean the document feeder rollers, sub roller Cleaning the Pick UP Roller Cleaning the Thermal HeadRefer to 4 Disassembly Instruction Troubleshooting Troubleshooting SummaryPrecautions User Recoverable Errors Document Jam Starting Troubleshooting Troubleshooting Details Simple Check List Troubleshooting Items Table No document feed ADF Auto Document Feed Section Paper JAM Multiple feed Skew Image is distorted When printing Black or white vertical lines appear Skewed receiving image KX-FT21RS KX-FT21RS Facsimile section Communication Section Defective facsimile section Transmit problem Sometimes there is a transmit problem Check Document Paper JAM Reception problem Unit can copy, but cannot transmit/receive Echo/Echo Canceler Erroneous detection due to an echo or echo cancelerCause and Countermeasure Countermeasure B Causes and Countermeasures Cause aCountermeasure a Cause B Reception Operation Transmission Operation How to output the Journal Report TX=TRANSMISSION RX=RECEPTION Countermeasure KX-FT21RS KX-FT21RS KX-FT21RS KX-FT21RS KX-FT21RS KX-FT21RS KX-FT21RS Hint Remote programming KX-FT21RS YES/NO Program Mode Table 996 Journal Digital Board Section Please refer to the 2.3.4.3.1. Digital Block Diagram Digital Block Diagram KX-FT21RS Normal Wave Patterns Pin No. Diagram KX-FT21RS KX-FT21RS NG Example Check the Status of the Digital Board Analog Board Section Defective ITS Integrated Telephone System Section Key components for troubleshooting Power Supply Board Section Troubleshooting Flow Chart KX-FT21RS Broken parts repair details D101, D102, D103, D104 No key operation No LCD indication Operation Board Section Check the document sensor PS1 Sensor SectionCheck the read position PS2 Refer to 6.4.4. Scanning Block Read Section KX-FT21RS Refer to 6.4.3. Thermal Head Thermal Head Section Operation Programming and ListsOperation Flow Above values are the default values 3ALL Service Function Table See 2.6.1. Printout Example Service Mode Settings Example of a printed out list Other Test Functions Button Code Table Dtmf Signal Tone Transmit SelectionPrint Test Pattern EQM DescriptionsCompression Code MH/MR Mslt means Minimum Scan Line Time. Used only at the factory Printout Example Adjusting the Feed Pressure Adjustments Disassembly Instructions KX-FT21RS KX-FT21RS KX-FT21RS KX-FT21RS KX-FT21RS KX-FT21RS KX-FT21RS KX-FT21RS KX-FT21RS KX-FT21RS Preparation Flat Package IC Removal Procedure KX-FT21RS Connection Diagram Codec IC5 D/A converter General Block Diagram +24V +5V AC220V256k Control Section Block Diagram100 Transmits the recorded data to the thermal head Asic IC1Decodes the address Execute modulation and demodulation for the FAX 102 103 Vddc 104 ROM IC2 Reset CircuitRAM IC3 Function Sram and RTC Back UP CircuitCircuit Operation Supervision Circuit for the Thermal Head Temperature LED Arraycis Transmission Facsimile SectionImage Data Flow During Facsimile Operation Copy Fine, Super-Fine, Half Tone Head 110 Block DiagramAnalog Front/End Thermal Head 112 Scanning Block Stepping Motor Drive Circuit Stepping Motor Phase Pattern Gear Section Mode Selection Copy mode Mode OperationTransmit mode Receive mode Scanning Printing See 6.5. Sensers and Switches117 118 Copying All of the sensor and switches are shown below Sensors and Switches119 Recording Paper Sensor SW201 Motor Position Sensor120 Document Sensor PS1 Read Position Sensor PS2121 Definition of Each Group Modem SectionFunction On ITU-T International Telecommunications´ Union Hold time Concerning Transmission TimeControl time Image transmission time DIS/DTC DCS 124 125 CFR 126 This unit uses one-dimensional MH format 127 Redundancy Compression Process Coding Mode Modem Circuit Operation Analog Unit Bell Detection Circuit NCU SectionGeneral Line Relay RLY1 Line Amplifier and Side Tone Circuits Handset Circuit Monitor Circuit EXT. TEL Circuit Diagram Key Matrix Analog Switch IC1 ControlOperation Panel KEY Scan LCD Control Sensor Detection Rectifier Circuit Power Supply Board SectionThis power supply board uses the switching regulator method Input Circuit KX-FT21RS Over Voltage Circuit Surge Absorber CircuitControl Circuit and Detecting Circuit Over Current Limiter O.C.L For the Schematic Diagrams 141 Printed Circuit Board 142 TP8 TP7 C26 C225 D104 D103SW201 C230 C231 C106 Q203 L203IC101 R215 145 F101 146 Printed Circuit Board Operation Board 147 Schematic Diagram 148 Schematic Diagram Analog Circuit 149 Schematic Diagram Switching Power Supply 150 Schematic Diagram Operation Circuit 151 152 153 Operation Panel Section 154 Upper Cabinet Section 155 Lower CABINET/P.C.B. Section Motor Section 157 Actual Size of Screws and Washer 158 Cabinet and Electrical Parts This replacement parts list is for KX-FT21RS only159 160 Digital Board Parts 161 162 Analog Board Parts 163 164 Operation Board Parts 165 Power Supply Board Parts Fixtures and Tools