Panasonic KX-TC1205RUB, KX-TC1205RUW manual HOW to Replace Flat Package IC, Preparation, Procedure

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20 HOW TO REPLACE FLAT PACKAGE IC

20.1. Preparation

∙SOLDER

Sparkle Solder 115A-1, 115B-1 or Almit Solder KR-19, KR- 19RMA

∙Soldering iron

Recommended power consumption will be between 30 W to 40 W.

Temperature of Copper Rod 662 ± 50°F (350 ± 10°C)

(An expert may handle between 60 W to 80 W iron, but beginner might damage foil by overheating.)

∙Flux

HI115 Specific gravity 0.863. (Original flux will be replaced daily.)

20.2. Procedure

1.Temporary fix FLAT PACKAGE IC by soldering on two marked 2 pins.

*Most important matter is accurate setting of IC to the corresponding soldering foil.

2. Apply flux for all pins of FLAT PACKAGE IC.

3.Solder employing specified solder to direction of arrow, as sliding the soldering iron.

KX-TC1205RUB / KX-TC1205R UW / KX-TC1205R US / KX-TC1205RUF

20.3.Modification Procedure of Bridge

1.Re-solder slightly on bridged portion.

2.Remove remained solder along pins employing soldering iron as shown in below figure.

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Contents KX-TC1205RUB KX-TC1205RUW KX-TC1205RUS KX-TC1205RUF Contents Accessories and Packing Materials Recharge Battery information BatteryBattery Replacement Base Unit Handset Location of ControlsConnection KX-TC1205RUB / KX-TC1205R UW / KX-TC1205R US / KX-TC1205RUF Adding Another Phone Making Calls Answering Calls OperationsKX-TC1205RUB / KX-TC1205R UW / KX-TC1205R US / KX-TC1205RUF KX-TC1205RUB / KX-TC1205R UW / KX-TC1205R US / KX-TC1205RUF Flash Button Show in Fig To remove Remove Disassembly InstructionsRear Cabinet Battery compartment cover Troubleshooting Guide Check Power Bell Reception Check Battery Charge CPU IC2 RF IC IC1 Check LinkRefer to Adjustment P.27 Check Handset Reception Check Handset TransmissionTest Mode Flow Chart Base Unit Adjustments Base UnitAdjustment How to change the channelIC3 Adjustment Standard Base UnitTest Mode Flow Chart Handset Adjustments HandsetIC1 How to change the channel AdjustmentComponent View Adjustment Standard HandsetFlow Solder Side View HOW to Check the Handset Speaker RF SpecificationBase Unit Frequency Table MHz STAND-BY TALK, Talk STAND-BY Explanation of CPU Data CommunicationRinging Changing the Channel Ports for transmitting and receiving of data IC1 Block Diagram Base UnitIC1 Block Diagram HandsetOutline Circuit OperationPower Supply Circuit Reset Circuit Base Unit Telephone Line Interface Charge CircuitBase to Handset Transmitter/ReceiverHandset to Base Signal Route Circuit Operation Handset Reset Circuit HandsetBattery Low / Power Down Detector 18.1. IC2 19.1. IC2 Procedure HOW to Replace Flat Package ICModification Procedure of Bridge PreparationCabinet and Electrical Parts Location Base Unit Cabinet and Electrical Parts Location Handet Accessories and Packing Materials Cabinet and Electrical Parts Replacement Parts ListDiodesi ZNR1 ERJ3GEYJ514 PQXA36ASVC Battery ERJ3GEYJ202 Accessories and Packing Materials Base Unit Schematic Diagram Base Unit For Schematic DiagramHandset Schematic Diagram Handset 26.1 Base Unit Schematic Diagram Base UnitFILTER\2 26.2 RF Unit Base Unit27.1 Handset Schematic Diagram Handset450kHz RF Unit HandsetKX-TC1205RUB / KX-TC1205R UW / KX-TC1205R US / KX-TC1205RUF Circuit Board Base Unit IC1 IC4 IC2 IC3 Circuit Board Handset RX VCO TX VCO KXTC1205RUB