Sony icf 704 s service manual

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2 markCenter Frequency red 10.70 MHz blue 10.67 MHz orange 10.73 MHz black 10.64 MHz white 10.76 MHz white/white 10.75 MHz yellow 10.79 MHz HOW TO CHANGE THE CERAMIC FILTERS This model is used two ceramic filters of CF2, CF3 and CF4. You must use same type of color marked ceramic filters in order to meet same specifications. Therefore, the ceramic filter must change two pieces together since its supply two pieces in one package as a spare parts. mark mark - white/white only CF2 CF3 CF4 mark mark CF3 CF2 CF4 Notes on Chip Component Replacement -Never reuse a disconnected chip component. -Notice that the minus side of a tantalum capacitor may be damaged by heat. SAFETY-RELATED COMPONENT WARNING!! COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. ICF-704S TABLE OF CONTENTS 1. GENERAL ............................................................................ 3 2. DISASSEMBLY 2-1. Cabinet (Front) Assy ............................................................. 5 2-2. Chassis Section ..................................................................... 5 2-3. Main Board ........................................................................... 6 2-4. Setting the Pointer ................................................................. 6 3. ELECTRICAL ADJUSTMENTS MW Section ............................................................................. 7 SW Section .............................................................................. 7 FM Section .............................................................................. 8 4. DIAGRAMS 4-1. Note for Printed Wiring Boards and Schematic Diagrams ............................................................. 9 4-2. Printed Wiring Board -“ Main Section -“ .............................. 10 4-3. Printed Wiring Boards -“ Power Section -“ ........................... 11 4-4. Schematic Diagram ............................................................. 12 5. EXPLODED VIEWS 5-1. Cabinet (Front) Section ....................................................... 13 5-2. Cabinet (Rear) Section ........................................................ 14 6. ELECTRICAL PARTS LIST ......................................... 15

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3 ICF-704S SECTION 1 GENERAL This section is extracted from instruction manual. 2 1 3 4 TUNING VOL MIN MAX TONE LOW HIGH A B C OPERATE ($ON/4STANDBY) Insert the # side of the battery first. Insérez le côté # de la pile en premier. Batterie mit der # Seite zuerst einlegen. Inserte en primer lugar el lado # de las pilas Inserire prima il lato # della pila. R6 (size AA) battery × 4 pile R6 (format AA) × 4 Mignonzelle (R6/AA) × 4 pila R6 (tamaño AA) × 4 Pila R6 (formato AA) × 4 Choosing Power Sources Installing the batteries (See Fig. A) 1 Open the lid of the battery compartment. 2Install four R6 (sizeAA) batteries (not supplied) with correct polarity. 3Close the lid. Note When operating the unit on batteries, remove the AC power cord from the AC IN jack. The unit cannot be operated on batteries when the AC power cord is connected to the AC IN jack. Battery life (Approx. hours) (JEITA*) When using FM SW AM(MW) LWSony alkaline 100 110 110 110 LR6 (size AA) Sony R6 (size AA) 36 40 40 40 *Measured by JEITA (Japan Electronics and Information Technology Industries Association) Standards. The actual battery life may vary depending on the circumstance of the unit. Replacing batteries When the sound becomes weak or distorted, replace all the batteries with new ones. Notes on batteries -Do not charge the dry batteries. -Do not carry the dry batteries with coins or other metallic objects. It can generate heat if the positive and negative terminals of the batteries are accidentally contacted by a metallic object. -Do not use different types of batteries at the same time. -When you replace the batteries, replace all with new ones. -When you are not going to use the unit for a long time, remove the batteries to avoid damage from battery leakage and corrosion. House Current (See Fig. B) 1 Connect the AC power cord (supplied) to the AC IN jack of the radio. 2Plug into a wall outlet. Note Use only the supplied AC power cord. Operating the Radio 1Press OPERATE ($) to turn on the radio. 2Select a desired band, and tune into a station using TUNING. TUNE (tuning) indicator lights up when a station is tuned in. 3Adjust the volume using VOL.4Adjust the tone to your preference using TONE. To obtain clear treble, turn to HIGH. To reinforce bass, set to LOW. -To turn off the radio, press OPERATE (4). -To listen with an earphone connect the earphone (not supplied) to the v (earphone) jack. The speaker is deactivated when an earphone is connected. Improving the Reception (See Fig. C) FM:Extend the telescopic antenna and adjust the length and angle for the best reception. SW:Extend the telescopic antenna vertically. AM(MW)/LW:Rotate the unit horizontally for optimum reception. A ferrite bar antenna is built into the unit. Note Adjust the direction of the antenna by holding the bottom of it. The antenna can be damaged when you move the antenna with excessive force. Telescopic antenna Antenne télescopique Teleskopantenne Antena telescópica Antenna telescopica AC power cord (supplied) Cordon dalimentation secteur Netzkabel (mitgeliefert) Cable de alimentación de ca (suministrado) Cavo di alimentazione CA (in dotazione)Carrying handle Poigné de transport Tragegriff Asa de transporte Maniglia di trasporto v AM (MW)/LW AM (PO)/GO FM UKWSW OC KW AC IN Band Gamme Wellenbereich Banda Banda TUNE indicator Indicateur TUNE TUNE-Anzeige Indicador de sintonia (TUNE) Indicatore TUNE To a wall outlet Vers une prise murale An eine Netzsteckdose A la toma de pared Alla presa di rete