SONYicf_sw07_service_manual 电路图 维修原理图.pdf

Ver 1.0 1999.02 MICROFILM SERVICE MANUAL FM STEREO/SW/MW/LW PLL SYNTHESIZED RECEIVER SPECIFICATIONS US Model Canadian Model AEP Model E Model Tourist Model ICF-SW07 AN-LP2 ICF-SW07 Antenna mdule Antenna Controller AN-LP2 RadioFans.CN 2 Specifications . 1 1.SERVICE NOTE. 3 2.GENERAL. 4 3.DISASSEMBLY 3-1. Cabinet (Lower), Cabinet ASSY . 25 3-2. Chassis ASSY . 26 3-3. Main Board . 26 3-4. Key Board. 27 3-5. Microcomputer Board. 27 3-6. Cabinet (Front), Reel ASSY . 28 3-7. Cabinet (Rear), Reel Board, Control Board . 28 4.ELECTRICAL ADJUSTMENTS.29 5.DIAGRAMS 5-1. Explanation of IC Terminals . 34 5-2. Block Diagrams. 37 5-3. Printed Wiring Boards (Main Section). 41 5-4. Schematic Diagram (Main Section) . 46 5-5. Printed Wiring Boards (Key Section) . 50 5-6. Schematic Diagram (Key Section). 53 5-7. Printed Wiring Boards (Microcomputer Section) . 55 5-8. Schematic Diagram (Microcomputer Section) . 56 5-9. Printed Wiring Boards (Antenna Section) . 59 5-10.Schematic Diagram (Antenna Section). 61 6.EXPLODED VIEWS 6-1. Cabinet Section. 64 6-2. Chassis Section . 65 6-3. Antenna Controller Section . 66 6-4. SW Loop Antenna Section . 67 7.ELECTRICAL PARTS LIST. 68 ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT! LES COMPOSANTS IDENTIFIS PAR UNE MARQUE ! SUR LES DIAGRAMMES SCHMATIQUES ET LA LISTE DES PICES SONT CRITIQUES POUR LA SCURIT DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PICES SONY DONT LES NUMROS SONT DONNS DANS CE MANUEL OU DANS LES SUPPLMENTS PUBLIS PAR SONY. SAFETY-RELATED COMPONENT WARNING! COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! 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. Flexible Circuit Board Repairing Keep the temperature of the soldering iron around 270C during repairing. Do not touch the soldering iron on the same conductor of the circuit board (within 3 times). Be careful not to apply force on the conductor when soldering or unsoldering. Notes on chip component replacement Never reuse a disconnected chip component. Notice that the minus side of a tantalum capacitor may be dam- aged by heat. TABLE OF CONTENTS RadioFans.CN 3 SECTION 1 SERVICE NOTE REPLACING THE SW STATION CALL ROM The propagation of short-wave radio waves is greatly affected by many causes such as atmospheric phenomenon due to dark spots on the sun, etc. This makes it necessary for short wave radio broadcast stations to periodically change their broadcast frequencies. This set can be re- placed with a new SW STATION CALL ROM to allow changing the broadcast frequencies. This set came with the latest ROM (Sony) when purchased. The user can later on when needed, purchase the latest updated ROM (F Corp.) version from the F Corporation on referring to the instruc- tions for “Purchasing the Latest SW STATION CALL ROM” which are included with the unit. These ROMs can also be custom made to match the users particular combination of broad- cast station frequencies. Identify the 2 different types of ROMs (Sony or F Corp.) as follows. The Sony ROM has no printing on it. The F Corp. ROM is marked with the F Corporation name. Servicing is provided for the accessory Sony ROM. Only the most recent version is supplied for replacing the Sony ROM. A new Sony ROM is issued every year in October and the part No. suffix is also changed. A new updated Sony ROM is issued every year so is not usually kept in stock. Servicing is not provided for the F Corp. ROM. Instruct the user to directly contact the F Corporation when the F Corp. ROM is obviously malfunctioning or defective. Address Mail: F Corporation P.O. Box 816 Tokyo 100-8692 Japan Fax: 81-3-3436-1932 E-mail : Q130 Short land AEP, 7AEP model only Connecting short land as in the figure when changed main board. MAIN BOARD (SIDE A) RadioFans.CN 4 SECTION 2 GENERAL LOCATION AND FUNCTION OF CONTROLS This section is extracted from instruction manual. RadioFans.CN 5 RadioFans.CN 6 RadioFans.CN 7 RadioFans.CN 8 RadioFans.CN 9 RadioFans.CN 10 RadioFans.CN 11 RadioFans.CN 12 RadioFans.CN 13 RadioFans.CN 14 RadioFans.CN 15 RadioFans.CN 16 RadioFans.CN 17 RadioFans.CN 18 RadioFans.CN 19 RadioFans.CN 20 RadioFans.CN 21 RadioFans.CN 22 RadioFans.CN 23 RadioFans.CN 24 RadioFans.CN 25 SECTION 3 DISASSEMBLY Note : Follow the disassembly procedure in the numerical order given. 3-1. CABINET (LOWER), CABINET ASSY r The equipment can be removed using the following procedure. Cabinet (Lower) ASSY Cabinet ASSY Set Chassis ASSY Microcomputer board Main board Key board Cabinet (Front), Reel ASSY Cabinet (Rear), Reel board, Control board Set 3 Screws (+BTP 2x8) 4 Screw (M 1.7) 3 Screws (+BTP 2x8) 5 Claws 5 Claw 5 Claw Lid, Battery case Cabinet (lower) ASSY Antenna, Telescopic Cabinet ASSY 1 6 2 7 Remove solder RadioFans.CN 26 3-3. MAIN BOARD 3-2. CHASSIS ASSY 2 Screw (1.4x4) 1 3 4 Remove solder Flexible board Main board Chassis ASSY Cabinet ASSY Brown Black 1 Remove solder 2 4 5 Flexible board (Key board:CN701) 3 Claw 3 Claws 3 Claw 3 Claw Terminal (+), Battery Main board Chassis Yellow Green Black Pink Ferrite-rad anttena (MW/LW) Caution : A portion of the chassis and cabinet ASSY are joined by adhesive sheet so use caution during removal. Caution : A portion of the chassis and main board are joined by adhesive sheet so use caution during removal. RadioFans.CN 27 3-4. KEY BOARD 3-5. MICROCOMPUTER BOARD 4 Claws 5 Claw Chassis 2 Screw (1.4x3) 6 Flexible board 1 Cut the sheet Sheet 3Push this place, and release a claw Key board ! 2 4 3 8 0 1 Screws (+P 2x6) 9 Screws (1.4x4) 9 Screws (1.4x4) 6 Screws (B 1.4x6) 5 Adaptor (shaft) 5 Adaptor (pin) Lid (front) Microcomputer board Cabinet ASSY Reinforcement (A) Frame (lid) Lid (rear) ASSY 7 Claws 7 Claws 7 Claws RadioFans.CN 28 3-6. CABINET (FRONT), REEL ASSY 3-7. CABINET (REAR), REEL BOARD, CONTROL BOARD 2 Cabinet (rear) 1 Remove three solders (Cord with plug) 1 Remove two solders (From battery terminals) 1 Remove four solders (From reel board) Reel board Control board 5 1 4 Cabinet (rear) ASSY Cabinet (front) Reel board Surface of contacts Reel ASSY Lid, Battery case 2 Screws (M 1.7) 3 Screw, Step 2 Screws (M 1.7) Note on instalation : Apply grease (J-2502-028-1) to the surface of contacts on the reel board. RadioFans.CN 29 SECTION 4 ELECTRICAL ADJUSTMENTS AM SECTION 0dB=1V 2nd LOCAL Adjustment BAND : AM VOLUME control : as required Connection Points : Procedure : 1. Tune the set to AM 150kHz. 2. Press the SSB button, and confirm that USB is displayed. 3. Press the /1 button. 4. Adjust CT201 to obtain a 55.39MHz on the frequency counter. Standard value : 55.38997 55.39003 MHz 5. Press the ? button only once. (Return to 2 if wrong) 6. Adjust RV203 to obtain a 55.3891MHz on the frequency counter. Standard value : 55.38907 55.38913 MHz Adjustments Location : MAIN board (see page 33) 1 st IF Adjustment BAND : AM VOLUME control : as required Setup : Procedure : 1. Set the frequencies of the AM RF SSG and the frequency dis- play of the set to 150kHz. 2. Adjust T104 and T105 to obtain a maximum reading on the level meter. Adjustments Location : MAIN board (see page 33) SSB ZERO BEAT Adjustment Setup : BAND : AM MODE : SSB (USB or LSB/CW) Procedure : 1. Tune to the strong and stable AM station nearby. 2. Adjust the RV201 to attain zero beat (no beat sound heard). 3. Change the mode to the alternative band ( LSB/CW if USB), and if not, readjust. Adjustments Location : MAIN board (see page 33) AM RF SSG J302(headphone) level meter 16 set Put the lead-wire antenna close to the set. 30% amplitude modulation by 400Hz signal. Output level : as low as possible DC5V S 0.01uF 2.4k 1M 1pF servicing tool 2SK193-E TP (2ND LOCAL) frequency counter Use a shield wire as short as Possible MAIN BOARD (Side A) RadioFans.CN 30 SW FREQUENCY Adjustment BAND : AM VOLUME control : as required Connection Points : Note :Disconnect a loop antenna ASSY from the antenna board, and connect two dummy antenna coils in series connection. ANTENNA MDULE (ANTENNA BOARD) ANTENNA CONTROLLER level meter 16 J1,J2 J101 (AM EXT ANT) J302 (headphone) SET (MAIN BOARD) Procedure : 1. Align the set with the frequency of the AM RF signal generator shown on the table below. 2. Align RV401 - RV412 for each band meter band until the high- est reading is obtained on the level meter. AM RF SSG frequencyMeter bandAdjust part 2.4MHz120mbRV401 3.3MHz90mbRV403 3.95MHz75mbRV405 4.9MHz60mbRV407 6.075MHz49mbRV409 7.25MHz41mbRV411 9.7MHz31mbRV402 11.825MHz25mbRV404 13.7MHz22mbRV406 15.35MHz19mbRV408 18.275MHz16mbRV410 23.5MHz13mbRV412 Caution :Always perform the SW Frequency Adjustment after hav- ing replace the main circuit board or antenna circuit board. Adjustments Location : MAIN board (see page 33) AM RF SSG TP (SG GND) Two dummy antenna coils 1H (1-410-497-11) TP (DUMMY IN) 30% amplitude modulation by 400Hz signal. Output level : as low as possible ANTENNA BOARD (Side B) 0.5pF RadioFans.CN 31 FM SECTION FM FREQUENCY COVERAGE Adjustment BAND : FM VOLUME control : as required Connection Points : Procedure : 1. Tune the set to 76MHz. 2. Adjust T201 to obtain a 1.6V on the digital voltmeter. Standard value : 1.55 1.65V 3. Tune the set to 108MHz. 4. Make sure that the digital voltmeter reading is below 11V. Adjustments Location : MAIN board (see page 33) FM TRACKING Adjustment Note :This adjustment should be performed after the remove Rod Antenna (ANT102). This adjustment should be performed after the FM FRE- QUENCY COVERAGE ADJUSTMENT. BAND : FM VOLUME control : as required Connection Points : Procedure : 1. Set the frequencies of the FM RF SSG and the frequency dis- play of the set to 76MHz. 2. Adjust T106 and T107 to obtain a maximum reading on the level meter. 3. Set the frequencies of the FM RF SSG and the frequency dis- play of the set to 108MHz. 4. Adjust CT101 and CT102 to obtain a maximum reading on the level meter. 5. Repeat the above steps several times, and finish the adjustment with the trimmers CT101 and CT102. Adjustments Location : MAIN board (see page 33) FM RF SSG 0.01uF TP(ANT) 22.5kHz frequency deviation by 400Hz signal. Output level : as low as possible MAIN BOARD (Side A) J302(headphone) level meter 16 set Digital Voltmeter TP (VT) MAIN BOARD (Side A) RadioFans.CN 32 FM STEREO Adjustment BAND : FM ST MONO switch : ST VOLUME control : as required Connection Points : Note :Connect a capacitor (100F) to TP (DET) during TP (GND). Procedure : 1. Adjust RV301 to obtain a 76kHz on the frequency counter. Standard value : 75.7 76.3MHz Adjustments Location : MAIN board (see page 33) SD Adjustment BAND : FM VOLUME control : as required Connection Points : Procedure : 1. Set the frequencies of the FM RF SSG and the frequency dis- play of the set to 93MHz. 2. Adjust RV202 so that a waveform on oscilloscope is as shown below. Adjustments Location : MAIN board (see page 33) oscilloscope TP(SD) MAIN BOARD (Side A) FM RF SSG 0.01uF TP(ANT) 22.5kHz frequency deviation by 400Hz signal. Output level : 54dB MAIN BOARD (Side A) 1pF 1M 2.4k 0.01F 100F TP (76k) TP (DET)TP (GND) S DC5V 2SK193-E frequency counter servicing tool MAIN BOARD (Side A) RadioFans.CN 33 FM 100MHz Adjustment BAND : FM VOLUME control : as required Connection Points : Procedure : 1. Tune the set to FM 89.3MHz. 2. Adjust CT401 to obtain a 100MHz on the frequency counter. Standard value : 99.99997 100.00003MHz Adjustments Location : MAIN board MICROCOMPUTER SECTION 4MHz SYSTEM CLOCK Adjustment BAND : AM VOLUME control : as required Connection Points : Procedure : 1. Tune the set to AM 150kHz. 2. Adjust CT501 to obtain a 4.04MHz on the frequency counter. Standard value : 4.038 4.042MHz 3. Tune the set to AM 1010kHz. 4. Make sure that the frequency counter reading is 3.9670 3.9730 MHz Adjustments Location : Adjustments Location : RV405 RV403 RV412 RV411 RV406 RV401-412 : SW frequency adjustment T201 : FM frequency coverage adjustment RV410 T106 : FM tracking adjustment T107 : FM tracking adjustment T104 : AM 1st IF adjustment T105 : AM 1st IF adjustment CT201 : AM 2nd local adjustment RV203 : AM 2nd local adjustment CT101 : FM tracking adjustment CT102 : FM tracking adjustment RV404 RV409 RV408 RV402 RV401 RV407 RV201 : SSB zero beat adjustment RV202 : SD adjustment RV301 : FM stereo adjustment CT401: FM 100MHz Adjustment MAIN BOARD (Side B) CT501: 4MHz system clock Adjustment MICROCOMPUTER BOARD (SIDE B) 1pF 1M 2.4k 0.01F S DC5V 2SK193-E frequency counter TP (4MHz) TP (4MHz) servicing tool MICROCOMPUTER BOARD (Side A) 1pF 1M 2.4k 0.01F S DC5V 2SK193-E frequency counter TP (FM OSC) servicing tool MAIN BOARD (Side A) RadioFans.CN 34 SECTION 5 DIAGRAMS 5-1. EXPLANATION OF IC TERMINALS IC402 PD17072GB-556-1A7 (PLL SYNTHESIZER CONTROL) Pin No.Pin nameI/ODescription 1ROD/BAROROD/BAR antenna select output. “H” : BAR, “L” : ROD 2AM/FMOAM/FM select output. “H” : AM, “L” : FM 3ENV/PSNOENV/PSN select output. “H” : ENV, “L” : PSN 4SSB/SYNCOSSB/SYNC select output. “H” : SSBR, “L” : SYNC 5L/UOUSB/LSB select output. 6BAND0OMeter band select output. 7BAND1OMeter band select output. 8BAND2OMeter band select output. 9BAND3OMeter band select output. 10 13Not used (OPEN). 14DA0I/ODA signal in/out terminal. 15DA1I/ODA signal in/out terminal. 16DA2I/ODA signal in/out terminal. 17DA3I/ODA signal in/out terminal. 18GNDGround terminal. 19EOOPLL charge pump output. 20VCOLIMF, HF input terminal. 21VCOHIVHF input terminal. 22REGOORegurator output for PLL. 23VDDPower supply terminal. 24XOUTOOsillator output terminal (75kHz). 25XINIOsillator input terminal (75kHz). 26REG1ORegurator output for oscillator. 27 49Not used (OPEN). 50CEIChip enable input. 51REQIPLL request signal input. 52PLL-CTLOPLL control output. 53UNLOCKOPLL unlock signal output. 54ACKOClock