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SERVICE MANUAL - Electronica.ro

1. 4 3 DIAL POINTER SETTING 5 4 POWER CORD SETTING 6 5 ELECTRICAL ADJUSTMENTS 7 6 DIAGRAMS 6 1 Block DA PASS a ones 9 6 2 Printed Wiring Boards ICF C470 11 6 3 Schematic Diagram ICF C470 rrrrrrrrrrrnnrrrrrrnnvnvvvvnnnnnnn 13 6 4 Printed Wiring Boards ICF C470L 15 6 5 Schematic Diagram ICF C470L 17 7 EXPLODED VIEWS 20 8 ELECTRICAL PARTS LIST 22 SAFETY RELATED COMPONENT WARNING COMPONENTS IDENTIFIED BY MARK A OR DOTTED LINE WITH MARK A 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 PUB LISHED BY SONY ATTENTION AU COMPOSANT AYANT RAPPORT A LA SECURITE LES COMPOSANTS IDENTIFIES PAR UNE MARQUE A SUR LES DIAGRAMMES SCHEMATIQUES ET LA LISTE DES PIECES SONT CRITIQUES POUR LA SECURITE DE FONCTIONNEMENT NE REMPLACER CES COM POSANTS QUE PAR DES PIECES SONY DONT LES NUMEROS SONT DONNES DANS CE MANUEL OU DANS LES SUPPLEMENTS PUBLIES PAR SONY SAFETY CHECK OUT After correcting the original service problem perform the follow ing safety check before releasing the set to the customer Check the antenna terminals
2. LW TRACKING BAND SELECT SWITCH Q3 4 I 6 1 BLOCK DIAGRAM CT1 2 FM TRACKING L3 FM RF ANTI d CV1 2 CT1 2 FM LEAD TUNING ANTENNA porco a pee Li i C470 AM FERRITE ROD evi l ANTENNA TUNING A I i 50 3 I e mdp i i l Jaer i l l l z cra 1 I I nA 1 I i VREF REG OUT I AM TRACKING Cy1 4 l I i I l NS anl T i CT1 3 L4 oct x Lob RR i AM MW FREQUENCY ib COVERAGE i i _ CT1 4 L1 1 I l MW LW MW TRACKING S1 l TE FERRITE ROD gy BAND l AM MW ANTENNA l OSC i TUNING 91 2 7 IM SN Lit gt l a LW FREQUENCY l COVERAGE l I ii a eS LW l i l l CT5 L1 2 I l I I I d FM AM FRONT END FM AM IF AMP DET AGC AF AMP IC1 FM DISCRI FM CT1 1 L2 I FM FREQUENCY 2 COVERAGE FM OSC CT1 1 CV1 1 CV1 MODE CONTROL LED DRIVER IC2 dl ul ui Oe S 2 a b GBB o5 Fe z D mn b lt mo T O e Q 22 7 8 0 m a m z T N D lt x lt O LU a LU 2 ro qe Oz E z 3 F S11 CLOCK ere Ge eee a a O O O O O l O O Te b ab TNS ab NN qr l S4 S5 S10 S7 I S6 S6 l S11 S8 S9 LED i DATE DI SPLAY amp L amp H amp L amp H l amp L l l U H l amp H 1 L amp H al I E zb TT S4 S10 S6 S8 TIME SET ALARM SNOOZE DATE ALARM R
3. 216 041 00 216 096 00 216 057 00 216 206 00 216 073 00 216 073 00 Description Hemark SHORT 0 C470 E13 LED LED SL 1906 54T DATE DISPLAY C470 US CND E92 LED SL 3906 54T DATE DISPLAY C470 E13 LED SL 3906 55T DATE DISPLAY C470 AEP IT SP AUS C470L lt COIL gt ANTENNA FERRITE ROD AM C470 US CND E92 ANTENNA FERRITE ROD AM C470 AEP IT E13 SP AUS ANTENNA FERRITE ROD MW LW C470L COIL AIR CORE C470 US CND AEP E13 E92 SP AUS C470L COIL C470 IT COIL OSC MW INDUCTOR 22uH INDUCTOR 22uH TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR 2SA1175 HFE 28C2001TP K1K2 28C403SP 51 C470L DTC143XSA C470L 2SA1175 HFE C470 US CND E92 C470L TRANSISTOR 2SC403SP 51 C470L lt RESISTOR gt RES CHIP 1K 5 1 10W METAL CHIP 68 5 1 10W METAL CHIP 10K 5 1 10W METAL CHIP 10K 5 1 10W C470L RES CHIP 100K 5 1 10W C470 METAL CHIP 2 2K 5 1 10W METAL CHIP 2 2K 5 1 10W RES CHIP 100K 5 1 10W C470L METAL CHIP 10K 5 1 10W C470L RES CHIP 1K 5 1 8W C470L METAL CHIP 22K 5 1 10W C470L METAL CHIP 470 5 1 10W RES CHIP 91K 5 1 10W METAL CHIP 2 2K 5 1 10W C470 RES CHIP 2 2K 5 1 8W C470L METAL CHIP 10K 5 1 10W METAL CHIP 10K 5 1 10W C470L Ref No R19 R21 A R22 A R22 R23 A R23 R24 R25 R26 R28 S1 S1 912
4. SERVICE MANUAL Ver 1 1 1999 06 With SUPPLEMENT 1 9 926 981 81 MICROFILM IGF C470 C470L US Model Canadian Model E Model Australian Model ICF C470 AEP Model ICF C470 C470L A o UK Model Yn vo ICF C470L Time display North and South America UK and Australia 12 hour system Other countries 24 hour system Frequency range Band ICF C470 ICF C470L BT FM 87 5 108 MHz AM 530 1 710 kHz FM 87 5 108 MHz Other ie North countries taly Speaker Approx 6 6 cm 2 5 8 inches dia 8 Ohms AM 526 5 1 606 5 kHz FM 87 5 108 MHz 87 5 108 MHz AM MW 530 1 605 kHz 530 1 605 kHz LW 153 255 kHz Photo ICF C470 SPECIFICATIONS Power output 100 mW at 10 harmonic distortion Power requirements North America 120 V AC 60 Hz South America 220 230 V AC 50 60 Hz Other countries 220 230 V AC 50 Hz For power backup 9V DC one 6F22 battery Battery life Approx 35 hours for clock backup using the S 006P U battery Dimensions Approx 200 x 77 x 150 mm w h d 7 7 8 x 31 8 x 6 inches incl projecting parts and controls Mass UK model Approx 700g 1 Ib 9 oz not incl battery Other models Approx 650g 1 Ib 7 oz not incl battery Design and specifications are subject to change without notice ICF C470 FM AM CLOCK RADIO ICF C470L FM MW LW 3 BAND CLOCK RADIO SON Y TABLE OF CONTENTS GENERAL castrenses 3 2 DISASSEMBLY
5. 50V lt lC gt C31 1 163 021 11 CERAMIC CHIP 0 01uF 10 50V C32 1 126 925 11 ELECT 470uF 20 10V C1 8 752 037 02 IC CXA1019S C33 1 104 665 11 ELECT 100uF 20 25V IC2 8 759 193 05 IC LC85632 C34 1 126 934 11 ELECT 220uF 209 10V C35 1 163 009 11 CERAMIC CHIP 3 0 001uF 10 50V SHORT C36 1 164 182 11 CERAMIC CHIP 0 0033uF 10 50V JC1 1 216 296 00 SHORT 0 C37 1 163 038 00 CERAMIC CHIP 0 1uF 25V JC2 1 216 296 00 SHORT 0 C38 1 163 038 00 CERAMIC CHIP 0 1uF 25V JC3 1 216 296 00 SHORT 0 C470L JC4 1 216 296 00 SHORT 0 C39 1 163 038 00 CERAMIC CHIP 0 1uF 25V JC5 1 216 295 00 SHORT 0 C470L C470 AEP IT SP C470L AEP C40 1 163 009 11 CERAMIC CHIP 0 001uF 10 50V JC6 1 216 295 00 SHORT 0 C470 AUS C470L UK C41 1 128 551 11 ELECT 2206 20 25V JC9 1 216 296 00 SHORT 0 C42 1 163 021 11 CERAMIC CHIP 0 01uF 10 50V JC10 1 216 296 00 SHORT 0 C43 1 163 021 11 CERAMIC CHIP 0 01uF 10 50V JC11 1 216 296 00 SHORT 0 C44 1 163 009 11 CERAMIC CHIP 3 0 001uF 10 50V JC12 1 216 296 00 SHORT 0 C45 1 163 021 11 CERAMIC CHIP 0 01uF 10 50V JC13 1 216 295 00 SHORT 0 C470 C48 1 163 021 11 CERAMIC CHIP 0 01uF 10 50V JC14 1 216 295 00 SHORT 0 C470 C470 E13 JC15 1 216 295 00 SHORT 0 C470 AEP IT E13 SP AUS C49 1 164 004 11 CERAMIC CHIP 0 1uF 1096 25V JC16 1 216 296 00 SHORT 0 C470 E13 C470 US CND E13 E92 AUS JC19 1 216 295 00 SHORT 0 C470 C66 1 163 125 00 CERAMIC CHIP 220PF 5 50V C470 US CND E92 JC20 1 216 296 00 SHORT 0
6. AUS C470L SHEET BLIND TRANSFORMER POWER C470 US CND E92 TRANSFORMER POWER C470 AEP IT E13 SP AUS C470L SNAP BATTERY ANTENNA FM WIRE ANTENNA FERRITE ROD MW LW C470L ANTENNA FERRITE ROD AM C470 US CND E92 ANTENNA FERRITE ROD AM C470 AEP IT E13 SP AUS LED SL 1906 54T DATE DISPLAY C470 US CND E92 LED SL 3906 54T DATE DISPLAY C470 E13 LED SL 3906 55T DATE DISPLAY C470 AEP IT SP AUS C470L NOTE Due to standardization replacements in the parts list may be different from the parts speci fied in the diagrams or the components used on the set SECTION 8 ELECTRICAL PARTS LIST Items marked are not stocked since they are seldom required for routine service Some delay should be anticipated when order ing these items The components identified by mark A or dotted line with mark are critical for safety Replace only with part number specified e XX and X mean standardized parts so they e SEMICONDUCTORS Les composants identifi s par une may have some difference from the original In each case u u for example marque sont critiquens pour la gt n Mee poem aka que par une pi ce RESISTORS uPB uPB UDC uPC portant le num ro sp cifi All resistors are in ohms uPD uPD METAL Metal film resistor CAPACITORS When epa Tn METAL OXIDE Metal oxide film resistor UF uF number please include the board F
7. C470L C67 1 163 189 00 CERAMIC CHIP 220PF 5 50V JC21 1 216 296 00 SHORT 0 C470L C470 US CND E92 JC22 1 216 295 00 SHORT 0 C470L JC23 1 216 296 00 SHORT 0 C470L FILTER JC24 1 216 295 00 SHORT 0 C470L CF1 1 577 072 11 FILTER CERAMIC C470 JC25 1 216 295 00 SHORT 0 C470L CF1 1 578 677 11 FILTER CRYSTAL C470L JC26 1 216 295 00 SHORT 0 C470L CF2 1 577 324 11 FILTER CERAMIC JC27 1 216 296 00 SHORT 0 C470L CF3 1 577 324 11 FILTER CERAMIC JC28 1 216 295 00 SHORT 0 C470L JC36 1 216 296 00 SHORT 0 C470L CONNECTOR JC37 1 216 295 00 SHORT 0 C470L CNT 1 568 270 11 SOCKET CONNECTOR 4P JC38 1 216 296 00 SHORT 0 C470L CN2 1 568 273 11 SOCKET CONNECTOR 7P JC39 1 216 295 00 SHORT 0 C470 IT mL Ref No JC43 LED1 LED1 LED1 L1 L1 L1 L2 L2 L4 L6 ES Q1 Q2 Q3 Q4 Q5 Q6 H1 R2 R3 R4 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R13 R14 R18 Part No 1 216 296 00 8 749 015 49 8 749 015 50 8 749 015 51 402 413 21 402 472 31 501 976 11 428 229 11 406 425 11 406 028 00 410 513 11 410 513 11 h 8 729 119 76 8 729 011 92 8 729 119 78 8 729 029 96 8 729 119 76 8 729 119 78 216 049 11 216 021 00 216 073 00 216 073 00 216 097 00 216 057 00 216 057 00 216 097 00 216 073 00 216 198 00 216 081 00
8. T1 Ti VR1 W6 W8 Part No 1 216 097 00 1 216 198 00 1 249 399 11 1 249 403 11 1 249 399 11 1 249 403 11 1 216 073 00 1 216 073 00 1 216 262 00 1 216 097 00 1 572 949 11 1 762 231 11 1 762 231 11 1 404 790 11 1 404 902 21 1 228 790 00 1 790 663 11 1 535 804 11 Description RES CHIP RES CHIP CARBON 100K 5 1K 5 33 5 Remark 1 10W CA70L 1 8W 1 4W F C470 AEP IT E13 SP AUS C470L CARBON CARBON 68 5 1 4W F C470 US CND E92 33 5 1 4W F C470 AEP IT E13 SP AUS C470L CARBON METAL CHIP METAL CHIP RES CHIP RES CHIP SWITCH 68 5 1 4W F C470 US CND E92 10K 5 10K 5 470K 5 100K 5 SWITCH SLIDE BAND C470L SWITCH SLIDE BAND C470 SWITCH SLIDE FREQUENCY C470 E13 lt TRANSFORMER gt TRANSFORMER IF C470 TRANSFORMER IF C470L lt VARIABLE RESISTOR gt RES VAR CARBON 50K VOLUME lt CONNECTION CORD gt CORD CONNECTION lt BATTERY SNAP gt SNAP BATTERY 1 10W 1 10W 1 8W 1 10W CA70L KK K K KK K K K K K K K K K K gt K K O K K K K K K K K K K K K K K K K K K K K K K K K TRANSFORMER BOARD C470L TRANSFORM ER BOARD C470 KOK K K K K K K K K K K K K K K K K K AT2 AT2 The components identified by mark or dotted line with mark are critical for safety Replace only with part num 1 671 685 11 1 671 685 21 1 535 771 11 1 433 57
9. big Brightness control Low High AM wide band Installing the Battery To keep good time your Dream Machine needs one 6F22 battery not supplied in addition to house current The battery keeps the clock operating in the event of a power interruption Before setting the time on your Dream Machine open the lid at the bottom of the unit install the battery with correct polarity and then close the lid After a power interruption the displayed time may not be always correct It may gain or lose about 10 minutes per hour Knowing When To Replace the Battery To check the battery power unplug the power cord from the wall outlet and plug it in again after a few minutes If the displayed time is incorrect replace the battery with a new one Adapting to the Local Power Line See Fig EY For South American countries this model is equipped with a frequency selector 220 230V AC 50 60 Hz located at the bottom of this unit If your unit has a frequency selector make sure that it is set correctly to match your local power supply If necessary switch the selector with a thin bladed object such as a screwdriver Setting the Clock and the Date Setting the Clock 1 Plug in the unit The display will flash AM 12 00 or 0 00 2 While holding down CLOCK press TIME SET or till the correct time appears in the display When you release CLOCK the clock begins to operate The clock system var
10. metal trim metallized knobs screws and all other exposed metal parts for AC leakage Check leakage as described below LEAKAGE TEST The AC leakage from any exposed metal part to earth ground and from all exposed metal parts to any exposed metal part having a return to chassis must not exceed 0 5 mA 500 microampers Leakage current can be measured by any one of three methods I A commercial leakage tester such as the Simpson 229 or RCA WT 540A Follow the manufacturers instructions to use these instruments 2 A battery operated AC milliammeter The Data Precision 245 digital multimeter is suitable for this job 3 Measuring the voltage drop across a resistor by means of a VOM or battery operated AC voltmeter The limit indica tion is 0 75 V so analog meters must have an accurate low voltage scale The Simpson 250 and Sanwa SH 63Trd are ex amples of a passive VOM that is suitable Nearly all battery operated digital multimeters that have a 2 V AC range are suit able See Fig A To Exposed Metal Parts on Set AC voltmeter 0 75 V Earth Ground Fig A Using an AC voltmeter to check AC leakage HOW TO CHANGED THE CERAMIC FILTERS This model is used two ceramic filters of CF2 and CF3 You must used same type of color marked ceramic filters in order to meet same specifications Therefore the ceramic filter must changed two pieces together since it s supply two pieces in one package
11. will play for the duration you have set and will then turn off automati cally To turn off the radio before the preset time press SNOOZE DATE SLEEP OFF SECTION 2 DISASSEMBLY Note Follow the disassembly procedure in the numerical order given CABINET LOWER Q five screws P3 x14 Q cabinet lower O two claws MAIN BLOCK O power transformer N AS Q Break the soldering of speaker lead 4 N Q Y three claws Es R Y lt Pl for chassis TU A S NN three claws for PWB SECTION 3 DIAL POINTER SETTING Note Follow the assembly procedure in the numerical order given R Install the MAIN board MN R i L T A a fies N K Turn VR1 to the arrow direction fully BOTTOM VIEW Turn shaft of CV1 to the N arrow direction fully O A Turn the knob VOL to the arrow Q direction fully Q Turn the knob tuning to the arrow direction fully SECTION 4 POWER CORD SETTING Set the power cord as illustrated below then install the lower cabinet FM antenna power cord lower cabinet SECTION 5 ELECTRICAL ADJUSTMENTS 0 dB 1 UV AM MW LW AM ICF C470 MW LW ICF C470L Setting Band switch AM MW LW Put the lead wire MAIN board AM FF signal antenna close to TP SPK generator the set level meter FA w a 30 amplitude dnb MAIN board TP SPK 400 Hz signal Output l
12. 0V C3 1 163 101 00 CERAMIC CHIP 22PF 5 50V RESISTOR C470 IT C470L C3 1 163 103 00 CERAMIC CHIP 27PF 5 50V JC7 1 216 296 00 SHORT 0 C470 US CND E13 E92 C470 US CND AEP E13 E92 SP AUS JC8 1 216 295 00 SHORT 0 C4 1 163 086 00 CERAMIC CHIP 3PF 50V C470 AEP IT SP AUS C470L C470L R15 1 216 073 00 METAL CHIP 10K 5 1 10W C4 1 163 088 00 CERAMIC CHIP 5PF 50V SWITCH C470 US CND E92 C4 1 163 091 00 CERAMIC CHIP 8PF 50V 94 1 762 233 11 SWITCH KEYBOARD TIME SET C470 AEP IT E13 SP AUS S5 1 762 233 11 SWITCH KEYBOARD TIME SET C5 1 163 233 11 CERAMIC CHIP 18PF 5 50V S6 1 762 233 11 SWITCH KEYBOARD C6 1 163 009 11 CERAMIC CHIP 0 001uF 10 50V SNOOZE DATE SLEEP OFF C7 1 163 021 11 CERAMIC CHIP 0 01uF 10 50V ST 1 762 233 11 SWITCH KEYBOARD A RADIO ALARM S10 1 762 233 11 SWITCH KEYBOARD B BUZZER ALARM C8 1 163 089 00 CERAMIC CHIP 6PF 50V C470L S11 1 762 233 11 SWITCH KEYBOARD CLOCK C8 1 163 095 00 CERAMIC CHIP 12PF 5 50V C10 1 128 551 11 ELECT 22uF 20 25V 8 1 671 684 11 KEY B BOARD C470L C11 1 163 021 11 CERAMIC CHIP 0 01uF 10 50V N 1 671 684 21 KEY B BOARD C470 C12 1 126 960 11 ELECT 1uF 20 50V gt k ok gt k gt k K K K ok ok K ok ok OK C13 1 163 021 11 CERAMIC CHIP 0 01uF 10 50V SWITCH C14 1 126 963 11 ELECT 4 7uF 20 50V C15 1 126 964 11 ELECT 10uF 20 50V S8 1 762 233 11 SWITCH KEYBOARD C16 1 163 989 11 CERAMIC CHIP 0 033uF 10 25V 1 ALARM RESET OFF
13. 2 104 51 SCALE DIAL C470L UK AT 1 783 817 11 AT 1 790 431 11 5 3 030 213 01 CABINET UPPER C470 US CND E13 E92 SP AUS 8 7 685 649 79 20 The components identified by mark ZA or dotted line with mark A are critical for safety Replace only with part number specified Les composants identifi s par une marque ZA sont critiquens pour la s curit Ne les remplacer que par une pi ce portant le num ro sp cifi Hemark CABINET UPPER C470L CABINET UPPER C470 AEP IT BUTTON ALARM C470 US CND E13 E92 SP AUS BUTTON ALARM C470 AEP IT C470L SPEAKER 6 6cm CORD POWER C470 AEP IT E13 SP C470L AEP CORD POWER C470L UK CORD POWER C470 E92 CORD POWER C470 US CND CORD POWER C470 AUS ON pi _ Am SCREW P 3X14 TYPE2 NON SLIT 2 CHASSIS SECTION Ref No Xo X x X Xo X X X 51 51 51 51 52 53 53 54 55 56 56 57 57 58 58 59 59 60 60 60 60 60 60 60 Part No 3 030 214 01 3 030 214 11 3 030 214 21 3 030 214 31 3 030 220 01 1 671 686 11 1 671 686 21 3 030 218 01 3 032 106 01 3 030 217 01 3 030 217 11 1 671 684 11 1 671 684 21 1 671 683 11 1 671 683 21 1 671 685 11 1 671 685 21 A 3683 025 A A 3683 057 A A 3683 059 A A 3683 060 A A 3683 061 A A 3683 063 A A 3683 065 A Hemark C470 US CND E92 C470 AEP IT SP AUS C470 E13 C470L Description CABINET LOWER CABINET
14. 3 11 1 433 574 11 ber specified TERMINAL C470 AEP IT E13 SP AUS C470L TRANSFORMER TRANSFORM ER POWER C470 US CND E92 TRANSFORM ER POWER C470 AEP IT E13 SP AUS C470L KOK K K K K K K K K K K K K K E gt gt K K K K K K K K KK KK K K K K K K K K K K K K K K K K K K K K K K K K K K K K K K Les composants identifi s par une marque A sont critiques pour la s curit Ne les remplacer que par une pi ce portant le num ro sp cifi Ref No AT AT AT AT AT ANTI SP1 W8 Part No Description Hemark MISCELLANEOUS KOK K K K K K K K K K K K K 555 795 00 CORD POWER C470 AEP IT E13 SP C470L AEP 696 572 21 CORD POWER C470L UK 769 339 22 CORD POWER C470 E92 783 817 11 CORD POWER C470 US CND 790 431 11 CORD POWER C470 AUS 501 907 21 ANTENNA FM WIRE 504 748 21 SPEAKER 6 6cm 535 804 11 SNAP BATTERY gt k gt k K K K K K K K K K CE gt gt K gt gt K K GE K K K K K K K K KK K K K K K K K K K K K K K K hle K K ACCESSORIES amp PACKING MATERIALS KOK gt k gt k gt k K K K K K K K K K K K K K K K K K K K K K K K K K K K 3 865 470 11 MANUAL INSTRUCTION ENGLISH FRENCH GERMAN SWEDISH C470 CND AEP AUS C470L 3 865 470 21 MANUAL INSTRUCTION ENGLISH C470 US 3 865 470 31 MANUAL INSTRUCTION ENGLISH ITALIAN SPANISH PORTUGUESE C470 AEP IT E C470L AEP 3 865 470 51 MANU
15. 4 D 5 D KEY A BOARD KEY B BOARD E 5 ha D 5 pem C 3 C 3 21 21 D 3 21 21 E 4 E 3 D 4 D 4 ANTI FM LEAD ANTENNA V BUZZER BOARD POWER BACK UP FOR CLOCK R DRY BATTERY BLK 6F 22 0 ND wE IEC DESIGNATION 6F22 53 S E s g IPCS 9V DIMMER A SP CONTROL FER m V RED VIET f om GE 11 ER SI2 UG SURE N FREQUENCY P LS SE GOHz 50Hz u HIBERUM OU A S 21 2 CET 21 POWER Note on Printed Wiring Boards TRANSFORM 0 parts extracted from the component side 18 e i indicates side identified with part number internal component LEDI LEDI e Pattern from the side which enables seeing DATE DISPLAY o LL Abbreviation 4 AC IN AUS Australian model CND Canadian model E13 220 230 V AC 50 60 Hz area in E model E92 120 VAC area in E model IT Italian model SP Singapore model 11 12 6 3 SCHEMATIC DIAGRAM ICF C470 See page 19 for IC Block Diagrams 5 El SNOOZE BATE SLEEP OFF RADIO BUZZER ICF C470 C470L a TIU em MAIN BOARD R Note on Schematic Diagram A CT1 1 L2 tar All capacitors are in UF unless
16. AL INSTRUCTION ENGLISH FINNISH DANISH CHINESE C470 AEP SP KOK K K K K K K K K K CE K K K K K K K K K gt K K K K K K K K K K K K K K K K K K K K K K K K K K K K KK K K K K K K K K The components identified by mark A or dotted line with mark A are critical for safety Replace only with part num ber specified Les composants identifi s par une marque A sont critiques pour la s curit Ne les remplacer que par une pi ce portant le num ro sp cifi ICF C470 C470L Sony Corporation gt rinted in Japan 9 926 981 11 Personal A amp V Products Company Published by Quality Engineering Dept 26 Shinagawa ICF C470 C470L SONY US Model Canadian Model SERV CE M AN VAL mm ds ICF C470 c AEP Model ICF C470 C470L UK Model ICF C470L SUPPLEMENT 1 File this supplement with the service manual Subject Addition of East Europe Russia Model ICF C470L ENG 99007 e DIFFERENCE PARTS LIST ACCESSORIES amp PACKING MATERIAL Before change After change Ref No Part No Description Ref No Part No Description Remark 3 865 470 42 MANUAL INSTRUCTION RUSSIAN POLISH CZECH HUNGARIAN East Europe Russia l 99F05075 1D Sony Corporation Printed in Japan O 1999 6 9 926 981 81 Personal Audio Company Published by General Engineering Dept
17. D 15 z O 4 Q O MINA 8 E O NOTE XX and X mean standardized parts so they may have some difference from the original one Color Indication of Appearance Parts Example KNOB BALANCE Mi as TT P Parts Color Cabinet s Color e Abbreviation AUS Australian model CND Canadian model E13 1 CABINET SECTION SECTION 7 EXPLODED VIEWS Items marked are not stocked since they are seldom required for routine service Some delay should be anticipated when ordering these items The mechanical parts with no reference num ber in the exploded views are not supplied Hardware mark list and accessories and packing materials are given in the last of the electrical parts list 120 V AC area in E model E92 IT Italian model 220 230 V AC 50 60 Hz area in E model SP Singapore model Description 1 Ref No Part No Description Remark Ref No Part No 1 3 369 135 21 LID BATTERY CASE 5 3 030 213 11 2 3 368 852 01 FOOT 5 3 030 213 31 3 3 030 215 01 BUTTON MAIN 6 3 030 216 01 C470 US CND E13 E92 SP AUS 3 3 030 215 11 BUTTON MAIN C470 AEP IT C470L 6 3 030 216 11 4 3 032 104 01 SCALE DIAL C470 US CND E92 SP1 1 504 748 21 4 3 032 104 11 SCALE DIAL C470 AEP SP AT 1 555 795 00 4 3 032 104 21 SCALE DIAL C470 E13 AUS 4 3 032 104 31 SCALE DIAL C470 IT AT 1 696 572 21 4 3 032 104 41 SCALE DIAL C470L AEP AT 1 769 339 22 4 3 03
18. ESET OFF BUZZER SLEEP OFF RADIO OFF S5 S7 S9 TIME SET ALARM SLEEP RADIO RADIO ON 05 C470 US Canadian E13 E92 EXCEPT C470 US Canadian E13 E92 i C470L z T Q6 l z I SWITCHING 8 CR OSC 19 I l I Ei na I I I DIU I l l B l C470 AEP Italian Singapore l I i C470L AEP i mE Le I I I ae JE ee ee ee ee I C470 Australian C470L UK S12 I C470 US Canadian E92 FREQUENCY gt 60Hz lf 50Hz I DETIENE I C470 E13 DISCRIMINATOR AM IF AMP AGC DET FM AM BAND SELECT 53 BUZZER VOLUME 50 60Hz INPUT 27 ALM A OUTPUT 83 RADIO OUTPUT R ALM B OUTPUT AF POWER AMP MUTING Q1 OD VR1 wee Cu US Canadian EM E mer SP1 O OL SPEAKER D1 EXCEPT C470 US Canadian E92 C470L Jus DESIGNATION 6F22 ICF C470 C470L SIGNAL PATH gt FM gt AM MW LW Abbreviation E13 220 230 V AC 50 60Hz area in E model E92 120 V AC area in E model POWER BACK UP FOR CLOCK DRY BATTERY 6F22 1PCS 9V T2 ig POWER TRANSFORMER IC2 B e RIPPLE FILTER BRIGHTNESS LOW HIGH 10 DIMMER CONTROL 04 6 L SWITCH 2 E AC IN ICF C470 C470L 6 2 PRINTED WIRING BOARDS ICF C470 Semiconductor Ref No i Location D
19. LOWER CABINET LOWER CABINET LOWER KNOB BAND gt gt e A BUZZER BOARD C470L BUZZER BOARD C470 CHASSIS SPRING ALARM KNOB ALARM C470 US CND E13 E92 SP AUS KNOB ALARM C470 AEP IT C470L KEY B BOARD C470L KEY B BOARD C470 KEY A BOARD C470L KEY A BOARD C470 TRANSFORMER BOARD C470L TRANSFORMER BOARD C470 MAIN BOARD COMPLETE C470 US CND E92 MAIN BOARD COMPLETE C470 AEP SP MAIN BOARD COMPLETE C470 IT MAIN BOARD COMPLETE MAIN BOARD COMPLETE MAIN BOARD COMPLETE MAIN BOARD COMPLETE C470 E13 C470 AUS C470L AEP C470L UK DN Se C470 AEP IT E13 SP Ref No 61 62 63 64 65 66 67 AT2 AT2 W8 ANTI L1 L1 L1 LED1 LED1 LED1 25094 Part No 3 034 959 01 3 846 067 01 3 030 219 01 3 030 221 01 3 919 268 01 1 535 771 11 3 034 961 01 1 433 573 11 1 433 574 11 1 535 804 11 1 501 907 21 1 501 976 11 1 402 413 21 1 402 472 31 8 749 015 49 8 749 015 50 8 749 015 51 LK The components identified by mark or dotted line with mark are critical for safety Replace only with part number specified Les composants identifi s par une marque A sont critiquens pour la s curit Ne les remplacer que par une pi ce portant le num ro sp cifi Description Remark PLATE LED SHIELD SPACER KNOB TUNING POINTER KNOB VOL TERMINAL C470 AEP IT E13 SP
20. RADIO OFF C17 164 004 11 CERAMIC CHIP 0 1uF 10 25V 22 Ref No Part No Description Remark Ref No Part No Description Remark C19 1 126 963 11 ELECT 4 7uF 20 50V TRIMMER C470L C20 1 128 551 11 ELECT 22uF 20 25V CT1 1 141 529 11 CAP VARIABLE C21 1 126 925 11 ELECT 470uF 20 10V C470 AEP IT E13 SP AUS C470L C22 1 109 982 11 CERAMIC CHIP 1uF 10 10V CT1 1 151 628 11 CAP VARIABLE C470 US CND E92 C470L CT5 1 141 604 11 CAP ADJ C470L C22 1 164 505 11 CERAMIC CHIP 2 2uF 16V CT6 1 141 604 11 CAP ADJ C470L C470 VARIABLE CAPACITOR C23 1 164 505 11 CERAMIC CHIP 2 2uF 16V C24 1 104 665 11 ELECT 100uF 209 10V CV1 1 141 529 11 CAP VARIABLE TUNING C470 C470 AEP IT E13 SP AUS C470L C24 1 126 382 11 ELECT 100uF 209 6 3V CV1 1 151 628 11 CAP VARIABLE TUNING C470L C470 US CND E92 C25 1 163 085 00 CERAMIC CHIP 2PF 50V C470 lt DIODE gt C25 1 163 235 11 CERAMIC CHIP 22PF 5 50V C470L D1 8 719 074 44 DIODE 1SS120RX D2 8 719 074 44 DIODE 1SS120RX C26 1 163 009 11 CERAMIC CHIP 0 001uF 10 50V D3 8 719 052 88 DIODE 1N4002 C470L D4 8 719 074 44 DIODE 1SS120RX C27 1 163 121 00 CERAMIC CHIP 150PF 5 50V D5 8 719 976 99 DIODE DTZ5 1B C470L C28 1 164 004 11 CERAMIC CHIP 0 1uF 10 25V D6 8 719 074 44 DIODE 1SS120RX C470 US CND E92 D8 8 719 074 44 DIODE 1SS120RX C29 1 164 004 11 CERAMIC CHIP 0 1uF 10 25V D9 8 719 074 44 DIODE 1SS120RX C30 1 163 021 11 CERAMIC CHIP 0 01uF 10
21. SET or till the desired time appears in the display When you release ALARM or the ALARM A or B indicator stops flashing and lights up and the current time appears in the display The alarm will come on at the preset time and will automatically turn itself off after 59 minutes Adjusting the Alarm Level BUZZER VOLUME Adjust the loudness of the alarm by setting B BUZZER VOLUME to sas small tOr medium or A big e If you set ALARM Q and ALARM to the same time only ALARM G will work The BUZZER VOLUME switch affects only the loudness of the buzzer alarm Use VOLUME to adjust the volume of the radio alarm To shut off the alarm press RADIO OFF ALARM RESET OFF The alarm will come on at the preset time the next day To cancel either alarm press RADIO OFF ALARM o eM while holding down ALARM or To doze for a few more minutes press SNOOZE DATE SLEEP OFF The alarm will shut off but will come on again after about 6 minutes You can repeat this process as many times as you like To check the preset time press ALARM or O Setting the Sleep Timer Enjoy falling asleep to the radio using the built in sleep timer 1 Press RADIO ON SLEEP The radio turns on 2 Press RADIO ON SLEEP repeatedly until the desired preset time appears on the display 90 60 45 30 or 15 minutes Every push changes the display as follows Current time On 90 gt 60 L i5 30 e 45 H The radio
22. T AGC AF AMP Ei I 31 1 ICI p gt CXA10195 Zou S1 an BAND Lan FM y NE i BUZZER BOARD gt I I JMR R29 F 51 2 BUZZER VOLUME V l JO13 M m C18 AE RE 0 1 x A ae Cell le A JOE HH SPI EL 0 ZW 2 SGE RE 52 y 5 5 SWITCH G ij A err 7 e BRIGHTNESS SPK b BBB E n 202 n W4 HIGH eed HH a D 33 EXCEPT US CNB E92 _ _ aL BOARD 155120 Le 02 BT NNN RZL E H M 25C2001 A 12 M RIPPLE p o lS b b 6 0 A x POWER V 7 4 FILTER 4 8 TRANSFORMER LO 3 7 CNI tp ib EXCEPT LE KEY B BOARD 54 AEP IT SP AUS We POWER BACK UP ca FOR CLOCK 0 ws 59 DRY BATTERY I SP gt 6F22 dit EC BESIGNATION i 6F22 IPCS 9V I 59 I US CNB E 13 E92 ON OFF J S S4 S6 S7 S10 N RABIO 8 Note Note The components identi Les composants identifi s par fied by mark A or dotted une marque A sont critiques line with mark A are criti pour la s curit cal for safety Ne les remplacer que par une Replace only with part pi ce portant le num ro number specified sp cifi ICF C 70 470L e Semiconductor Location 1 1 1 06 M SU M O1 R D D D D E D C C mo Bo Note on Printed Wiring Boards parts extracted from the component side indicates side identified with part number internal component Pattern from the side which enables seeing PRINTED WIRING BOARDS ICF C470L NS AN
23. T I FM LEAD ANTENNA WV POWER BACK UP FOR CLOCK DRY BATTERY 7 6F22 EG DESIGNATON 6F22 IPCS 9V LEDI 18 DATE DISPLAY 15 KEY B BOARD CARMEN ET Li ara eR OH rare UT BUZZER BOARD 52 DIMMER CONTROL SWITCH ICF C470 C470L 6 5 SCHEMATIC DIAGRAM ICF C470L See page 19 for IC Block Diagrams 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 NNN NNN OT QC NNN MAIN BOARD Note on Schematic Diagram A Li CT E Grene FR FRERE gt All capacitors are in uF unless otherwise noted pF uuF i Sa ake a Po e ES 50 WV or less are not indicated except for electrolytics Ex scene we rice re raha and tantalums Ee All resistors are in Q and 4 W or less unless otherwise ovis gz 50 IS nt specified cos PCTS 0 A internal component B P ew nonflammable resistor 1 3 LE 1024 1023 e 27 panel designation C Du 0 0 Ds T o amp 1 34 2549335 B Line E BSE uz MUT ING ZZ adjustment for repair D 00 T 3 on e Voltages are dc with respect to ground under no signal En za we E RB detuned conditions C L 2 u 9 MOBE CONTROL no mark FM 47 LG LED DRIVER MW LW y R25 D4 Voltages are taken with a VOM Input impedan
24. as a spare parts Center frequency 10 76 MHz 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 9 SECTION 1 er OO IA SNOOZ DATE SLEEP OFF O aun Q FA DO UZ ZE ALAM RESET OFF SLEEP OFP nano GM AC power cord BRIGHTNESS Cavo di alimentazione CA Hig DW FM wire antenna l Antenna FM a filo ICF C470 TUNING BAND VOLUME T Bm Tami Y i CUTE ICF C470L TUNING BAND VOLUME Tie TN si nm U GENERAL Before You Begin Thank you for choosing the Sony Dream Machine The Dream Machine will give you many hours of reliable service and listening pleasure Before operating the Dream Machine please read these instructions thoroughly and retain them for future reference These instructions cover two models the ICF C470 and ICF C470L The band for each model and the area where the model is available are shown below North and ICF C470 FM AM South America Other countries ICF C470 FM AM ICF C470L FM MW LW Features Dual alarm Date display Forward reverse time setting Full power backup to keep the clock and the alarm radio and buzzer operating during a power interruption with a 6F22 battery not supplied installed For models other than the North American model the power backup is only for the clock Alarm BUZZER volume control small medium
25. ce 10 MQ m Jc9 iss es Voltage variations may be noted due to normal produc m a e P 15132 TG 2 tion tolerances FM LEAD S 3 38 8 22 38 58 Zs 3 3 8 SR Ej 2 Signal path ANTENNA ii B zr Z z 6 5 6 DE E 6 5 5 R D Y Wl FM ANT iB 7 5 a z 5 S S UTE FM AM FRONT END Se EB 28 28 do de G Sh EFL FM AM 1F AMP 21 27 29 DET AGC AF AMP I 4 l 5 E CI 4 s CXA10195 l RET C40 _ 1000p 5 06 EEE ZR OZ F 28017405 l 3 SWITCHING BUZZER BOARD BIENE o BIMMER CONTROL SWITCH Se gt EJ G2 BRIGHTNESS MAL m RIS 100k l NA I s2 p SP yz Tin TE 3 E 7P gt 52 2 V OAZA CL HIGH a ea HER 53 4 i BUZZER VOLUME G Ji 100 gg NE ee C18 ird SPK b Zy 155120 O O D nnn 4 EEEE M LEM d MIB MN R17 pa NIEM 3 34 1 TRANSFORMER HH BB l A ae AN M P GN Sz CHASSIS BOARD ON 9 9 9 9 9 6 REX H A 12 fo RIPPLE POWER EM 3 FILTER rr EX NE mel te e ME FOR CLOCK B cn EJ l v DRY BATTERY o o C31 BI JC4 6F 22 0 01 155120 0 IEC DESIGNATION 6F22 i A T 1PCS 9V S9 l l SLEEP ALARM RESET OFF 05 amO AD A EZ E E ON DFF I A J Note Note The components identi Les composants identifi s par fied by mark A or dotted une marque A sont critiques line with mark A are criti pour la s curit cal for safety Ne les remplacer que par une Replace only with part pi ce portan
26. evel as low as possible FM Setting Band switch FM MAIN board FM RF signal MAIN board TP SPK generator TP FM ANT level meter 0 01 uF gt 22 5 kHz frequency w deviation by 400 Hz MAIN board TP SPK signal Output level as low as possible Repeat the procedures in each adjustment several times and the frequency coverage and tracking adjustments should be finally done by the trimmer capacitors e Remove FM antenna in FM adjustments Adjustment Location Main Board See page 8 AM IF ADJUSTMENT Adjust for a maximum reading on level meter 455 kHz LW FREQUENCY COVERAGE ADJUSTMENT 2 Adjust for a maximum reading on level meter CT6 FM FREQUENCY COVERAGE ADJUSTMENT Adjust for a maximum reading on level meter 86 5 MHz CT1 1 109 5 MHz FM TRACKING ADJUSTMENT Adjust for a maximum reading on level meter CT1 2 109 5 MHz 1 Except US Canadian models 2 ICF C470L Adjustment Location MAIN BOARD Component Side L1 L1 1 AM MW Tracking Adjustment T1 AM IF Adjustment CT1 2 FM Tracking Adjustment FM Frequency L2 Coverage Adjustment xg CT1 1 CT1 4 AM MW Tracking Adjustment L1 2 LW CT5 Tracking Adjustment Coverage Adjustment AM MW Frequency CT1 3 L4 CT6 ICF C470L LW Frequency Coverage Adjustment MAIN BOARD Conductor Side TP FM ANT SECTION 6 DIAGRAMS
27. ies depending on the model you own 12 hour system AM 12 00 midnight 24 hour system 0 00 midnight To set the current time rapidly keep pressing TIME SET or while holding down CLOCK This section is extracted from instruction manual Setting the Date 1 While holding down SNOOZE DATE SLEEP OFF press TIME SET or till the correct date appears in the display Then release SNOOZE DATE SLEEP OFF To display the date press SNOOZE DATE SLEEP OFF The display returns to the current time when you release SNOOZE DATE SLEEP OFF When SNOOZE DATE SLEEP OFF is pressed while the SNOOZE function is operating the year and date will not appear in the display Operating the Radio 1 Press RADIO ON SLEEP to turn on the radio and adjust VOLUME volume 2 Select FM AM MW or LW and tune in to a station using TUNING Adjusting the brightness of the clock display Set BRIGHTNESS to the position which gives you the desired display visibility HIGH or LOW To turn off the radio press RADIO OFF ALARM RESET OFF To improve radio reception FM Extend the FM wire antenna fully to improve FM reception AM MW LW Rotate the unit horizontally for optimum reception A ferrite bar antenna is built into the unit Setting the Alarm To set the radio alarm first tune in to a station and adjust the volume 1 While holding down ALARM RADIO for the radio or G BUZZER for the buzzer press TIME
28. nonflammable e COILS e Abbreviation uH uH AUS Australian model E92 120 V AC area in E model CND Canadian model IT Italian model E13 220 230 V AC 50 60 Hz area in E model SP Singapore model Ref No Part No Description Remark Ref No Part No Description Remark H 1 671 686 11 BUZZER BOARD C470L S9 1 762 233 11 SWITCH KEYBOARD SLEEP RADIO ON 2k ok K K K K K K ok K ok ok K A 3683 025 A MAIN BOARD COMPLETE lt CAPACITOR gt C470 US CND E92 N A 3683 057 A MAIN BOARD COMPLETE C470 AEP SP C18 1 163 038 00 CERAMIC CHIP 0 1uF 25V A 3683 059 A MAIN BOARD COMPLETE C470 IT C470 A 3683 060 A MAIN BOARD COMPLETE C470 E13 N A 3683 061 A MAIN BOARD COMPLETE C470 AUS RESISTOR A 3683 063 A MAIN BOARD COMPLETE C470L AEP JC18 1 216 295 00 SHORT 0 A 3683 065 A MAIN BOARD COMPLETE C470L UK R17 1 216 061 00 METAL CHIP 3 3K 5 1 10W SG R29 1 216 085 00 METAL CHIP 33K 5 1 10W 3 034 959 01 PLATE LED SHIELD SWITCH ANTENNA S2 1 762 231 11 SWITCH SLIDE BRIGHTNESS S3 1 572 949 11 SWITCH SLIDE BUZZER VOLUME ANT1 1 501 907 21 ANTENNA FM WIRE 2k gt k gt k gt k ok gt k K K K K ok K K K K K K K K K K K ok K K ok K K K K K K K K K K K K K K K K K ok K K K ok K K K K K K K K ok K K K lt CAPACITOR gt N 1 671 683 11 KEY A BOARD C470L i 1 671 683 21 KEY A BOARD C470 C1 1 163 235 11 CERAMIC CHIP 22PF 5 50V TERIS ae ake ake Eee ee e C2 1 163 243 11 CERAMIC CHIP 47PF 5 5
29. otherwise noted pF uuF CT1 2 cr FM FREQUENCY AM FREQUENCY 50 WV or less are not indicated except for electrolytics COVERAGE eee se ut cr O aaa oon 5p US CNB E92 and tantalums i 8p EXCEPT US CNB E92 A EJ s o d LE All resistors are in Q and 4W or less unless otherwise C29 pA LE EL M specified i CVI 1 CTI 1 0 1 RRR da Wo 18P pecitied Em Fe PTT e A internal component B ed a SR HF e Emt nonflammable resistor P 2 2xl 125 oye sql e ___ panel designation B Line CT1 4 LI sa we 2 m e ZX adjustment for repair AM pou ies PRINTED COIL D4FM OSC 2201 T e Voltages are dc with respect to ground under no signal detuned conditions Y no mark FM C AM e Voltages are taken with a VOM Input impedance 10 MQ AL ASSAT a 7 a Voltage variations may be noted due to normal produc 05990390 DAYA 9 tion tolerances l Z 5 2 S9 se 29 2 2 5 2 9 ge By 23 GAGA d 2 SS 6 5 5 d E E os 6 MOBE CONTROL signal path e Z f 5 2 e e e e c LEO BRIVER l D FM ANTI S x R EM LEAD OE E o BO o o ed om zo HE me mp AM D uw rp So s Do om En go Abbreviation WI FM AND a E S F da ao 28 28 zo Fe P LH EFL A EEE o AUS Australian model cs l CND Canadian model 18p B Los E13 220 230 V AC 50 60 Hz area in E model TEL E E92 120 V AC area in E model 155120 Ts IT Italian model FM AM FRONT END ens E SUME INE z5 SP Singapore model BE
30. t le num ro number specified sp cifi me 18 e IC Block Diagrams MAIN BOARD IC1 CXA1019S 5 Ye 8 9 9 om SoC Case 1 2 u OO Sart a x L 80 29 28 27 26 25 24 20 FM IF IN S AM IF IN AF POWER AMP FM AM BAND SELECT gt W A OO W z Q 8585798 5 Bg t 45 a e W U cc lt x LL IC2 LC85632 E og MC dl ef ub SE Se Q og lt a Fu FG n 8 Z zo FM AM IF OUT ALM B OUT ALM A OUT RADIO OUT 65 TEST vss SP SP SLEEP COUNTER SNOOZE COUNTER CONTROL CONTROL CAL D AM PM 10 SHR AG amp D 10 SHRB amp E 10 SHR C amp HRE DISPLAY CONTROL SP AL2 D SET CX U D SP AL1 D ALM A COUNTER TIME HRB amp G SP SP TIME D RESET ALM A HRC amp D SEC D SET CX U D ALM B COUNTER 10 SMINA amp F 10 SMINB amp G 10 SMINC amp D 10 SMINE MINE RESET y u SET CX U D V ALM B SLEEP POWER UP RESET CONTROL RESET CALENDER COUNTER COM PARATOR MINB amp G MINC amp D OUTPUT CONTROL CALENDER 2 INPUT CONTROL UD BET C gt lt ALM TONE 1200Hz gt lt O ti aD PRE bi Se COUNTER toes 1Hz SEC COUNTER GATE TIME SET ALM A STOP ALM B STOP ALM TONE OUTPUT DECODER DRIVER ALARM INDICATOR 5 ALM IN

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