sony_icf-s79_service_manual 电路图 维修原理图.pdf

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1、ICF-S79 FM/AM SYNTHESIZED RADIO ICF-S79L FM/MW/LW SYNTHESIZED RADIO ICF-S79V TV/WEATHER/FM/AM SYNTHESIZED RADIO MICROFILM US Model ICF-S79V AEP Model ICF-S79/S79L UK Model ICF-S79L SPECIFICATIONS SERVICE MANUAL ICF-S79/S79L/S79V Photo: ICF-S79V Notes on chip component replacement Never reuse a disco

2、nnected chip component. Notice that the minus side of a tantalum capacitor may be dam- aged by heat. RadioFans.CN 2 This section is extracted from instruction manual. SECTION 1 GENERAL RadioFans.CN 3 RadioFans.CN 4 Note: Follow the disassembly procedure in the numerical order given. REAR CABINET SEC

3、TION 2 DISASSEMBLY 2 six screws (BTP 3 25) 1 battery case lid 4 rear cabinet 5 antenna lead 5 BATT lead (red) 3 two claws 5 BATT lead (white) RadioFans.CN FM FREQUENCY COVERAGE ADJUSTMENT Adjust for a reading on digital voltmeter. L887.5 MHz (TV 2 ch)2.3 0.1 V (1.0 0.1 V) Confirm108.0 MHz8.5 0.5 V (

4、12.5 0.5 V) Note: Not use the FM RF signal generator in this adjustment. ( ): ICF-S79V FM TRACKING ADJUSTMENT Adjust for a maximum reading on level meter. L687.5 MHz (TV 2 ch (59.75 MHz) CT4108.0 MHz ( ): ICF-S79V ICF-S79L only LW FREQUENCY COVERAGE ADJUSTMENT Adjust for a reading on digital voltmet

5、er. CT5153 kHz2.3 0.1 V Confirm279 kHz8.5 0.5 V Note: Not use the AM RF signal generator in this adjustment. ICF-S79L only LW TRACKING ADJUSTMENT Adjust for a maximum reading on level meter. L5 (LW side)162 kHz CT2243 kHz AM (MW) FREQUENCY COVERAGE ADJUSTMENT Adjust for a reading on digital voltmete

6、r. L9531 kHz (530 kHz)2.8 0.1 V Confirm1,602 kHz (1,710 kHz)9.5 0.5 V Note: Not use the AM RF signal generator in this adjustment. ( ): ICF-S79V AM (MW) TRACKING ADJUSTMENT Adjust for a maximum reading on level meter. L5 621 kHz (590 kHz) CT31,395 kHz (1,490 kHz) : ICF-S79L ( ): ICF-S79V AM IF ADJUS

7、TMENT Adjust for a maximum reading on level meter. T2455 kHz 5 Repeat the procedures in each adjustment several times, and the frequency coverage and tracking adjustments should be finally done by the trimmer capacitors. SECTION 3 ELECTRICAL ADJUSTMENTS AM (LW/MW) Section Setting: BAND switch: AM (M

8、W) or LW 0dB=1 V FM/TV Section Setting: BAND switch: FM1 or TV ICF-S79V only TV FREQUENCY COVERAGE ADJUSTMENT Adjust for a reading on digital voltmeter. L2WEATHER 2 ch1.0 0.1 V ConfirmTV 13 ch10 0.5 V Note: Not use the FM RF signal generator in this adjustment. ICF-S79V only TV TRACKING ADJUSTMENT A

9、djust for a maximum reading on level meter. L1WEATHER 2 ch (162.40 MHz) CT1TV 13 ch (215.75 MHz) ICF-S79V only TV IF ADJUSTMENT Adjust for a maximum reading on level meter. T110.7 MHz AM RF SSG 30% amplitude modulation by 400 Hz signal Output level: as low as possible Put the lead-wire antenna close

10、 to the set. + level meter speaker terminal set FM RF SSG 22.5 kHz frequency deviation by 400 Hz signal Output level: as low as possible + level meter speaker terminal set FM lead wire antenna terminal 0.01F + digital voltmeter MAIN board TP (VT) RadioFans.CN 6 Adjustment and Connection Location: FM

11、 antenna ground (JW17) L8 FM FREQUENCY COVERAGE L9 AM (MW) FREQUENCY COVERAGE L5CT3 AM (MW) TRACKING TV TRACKING (ICF-S79V only) T1 TV IF (ICF-S79V only) L2 TV FREQUENCY COVERAGE (ICF-S79V only) CT5 LW FREQUENCY COVERAGE (ICF-S79L only) TV antenna ground (JW20) FM/TV antenna input (JW18) CT1 L1 T2 A

12、M IF FM TRACKING L6 CT4 CT2L5 LW TRACKING (ICF-S79L only) MWLWL5 IC1 IC2 TP (VT) MAIN BOARD (Component Side) MAIN BOARD (Conductor Side) RadioFans.CN Note on Printed Wiring Board: : parts extracted from the component side. : indicates side identified with part number. : internal component. : Pattern

13、 from the side which enables seeing. 7 8 ICF-S79/S79L/S79V MarkCenter frequency red10.70 MHz blue10.67 MHz orange10.73 MHz black10.64 MHz white10.76 MHz HOW TO CHANGE THE CERAMIC FILTERS This model is used two ceramic filters of CF1, CF3. You must use same type of color marked ceramic filters in ord

14、er 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 CF1 CF3 SECTION 4 DIAGRAMS 4-1.PRINTED WIRING BOARDS Semiconductor Location D1G-1Q1F-1 D2F-1Q2E-4 D3E-2Q3I-6 D4E-4Q4G-7 D5H-2Q5E-6 D6H-7Q6B-

15、7 D7G-6Q7H-6 D8F-7Q9E-5 D9E-2Q10D-6 D10B-2Q11C-2 D11B-2Q12A-2 D12C-7Q13D-7 D13C-7Q14C-7 D14H-7Q15D-2 Q16D-1 IC1F-2Q17A-3 IC2E-7 IC3C-7 IC4C-6 IC5C-6 IC6B-5 Ref. No.LocationRef. No.Location RadioFans.CN 9 10 ICF-S79/S79L/S79V Note on Schematic Diagram: All capacitors are in F unless otherwise noted.

16、pF: F 50 WV or less are not indicated except for electrolytics and tantalums. All resistors are in and 1/4 W or less unless otherwise specified. : internal component. : panel designation. B+ : B+ Line. : adjustment for repair. Power voltage is dc 4.5 V and fed with regulated dc power supply from bat

17、tery terminal. Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : FM (TV 2 6 ch) () : AM (MW) : LW 4-2.SCHEMATIC DIAGRAM (ICF-S79/S79L) See page 11 for Waveforms and IC Block Diagrams. Voltages are taken with a VOM (Input impedance 10 M). Voltage var

18、iations may be noted due to normal production tolerances. Waveforms are taken with a oscilloscope. Voltage variations may be noted due to normal production tolerances. Circled numbers refer to waveforms. Signal path. : FM : AM (MW/LW) RadioFans.CN 4-3.SCHEMATIC DIAGRAM (ICF-S79V) See page 11 for Wav

19、eforms and IC Block Diagrams. 11 12 Note on Schematic Diagram: All capacitors are in F unless otherwise noted. pF: F 50 WV or less are not indicated except for electrolytics and tantalums. All resistors are in and 1/4 W or less unless otherwise specified. : internal component. : panel designation. :

20、 B+ Line. : adjustment for repair. Power voltage is dc 4.5 V and fed with regulated dc power supply from battery terminal. Voltages and waveforms are dc with respect to ground un- der no-signal (detuned) conditions. no mark : FM (TV 2 6 ch) () : AM : TV (7 13 ch) Voltages are taken with a VOM (Input

21、 impedance 10 M). Voltage variations may be noted due to normal production tolerances. Waveforms are taken with a oscilloscope. Voltage variations may be noted due to normal production tolerances. Circled numbers refer to waveforms. Signal path. : FM : AM : TV ICF-S79/S79L/S79VRadioFans.CN 13 Wavefo

22、rms 1 IC6 (XIN) 2 Vp-p 13.3 s 2 IC6 # # (COM0 COM3) 3 Vp-p 32 ms 3 IC6 # $ (LCD0 LCD13) 3 Vp-p 32 ms 4 D11 ANODE 440 ns 30 Vp-p 5 Q11-1 COLLECTOR 6 Vp-p 360 ns IC Block Diagrams IC1TA7358P (ICF-S79V only) 123456789 RF AMP REGULATORBIAS MIXOSC RF IN BYPASS RF OUT MIX GND MIX OUT OSC OUT OSC VCC 12345

23、6789101514131211 FM DISCRIMINATOR AF POWER AMPAM FEFM IF TUNING METER AM IF DET AGC FM FE 232221202425191817162928272630 GND GND AF OUT VCC RIPPLE FILTER AF IN DET OUT AFC AGC AFC AGC IF GND METER N.C FM IF IN AM IF IN FM/AM BAND SELECT FM/AM IF OUT N.C FE GND AM RF IN FM RF REG OUT FM OSC FM RF IN

24、AFC AM OSC VOL NF FM DISCRI GND GND RadioFans.CN 14 Pin No.Pin NameI/OFunction 1INIT OUTOInitialize signal output for the destination select 2POWERORadio power on/off control signal output “H”: power on 3MUTEOMute on/off control signal output “L”: mute on 4AL LEVELOBeep sound level variable output t

25、erminal Not used (open) 5NCONot used (open) 6 to 9KS0 to KS3OKey strobe signal output terminal 10 to 13KR0 to KR3IKey return signal input terminal 14BAND1OBand select signal output terminal *1 15BAND2O Band select signal output terminal *1 Used for ICF-S79L/S79V only (ICF-S79: not used (open) 16V AM

26、PPower supply terminal for buffer amplifier 17NCONot used (open) 18GNDGround terminal 19EOOPLL error signal output terminal 20VCOLIAM (MW) or LW VCO input terminal 21VCOHIFM, TV or WEATHER VCO input terminal 22VREG1Power supply terminal (connected to the coupling capacitor) 23VDDPower supply termina

27、l (+2.2 V) 24XOUTOSystem clock output terminal (75 kHz) 25XINISystem clock input terminal (75 kHz) 26VREG2Power supply terminal (connected to the coupling capacitor) 27VLCD0 28CAP0 29CAP1 30VLCD2 31 to 34COM0 to COM3OCommon drive signal output to the liquid crystal display (LCD1) 35 to 48LCD0 to LCD

28、13OSegment drive signal output to the liquid crystal display (LCD1) 49LCD14OSegment drive signal output terminal Not used (open) 50CEIPower failure detection signal input from the IC5 Normally: “H” 51INTINot used (fixed at “L”) 52BEEPOBeep sound drive signal output terminal 53VDETIPower failure dete

29、ction signal input from the IC4 Normally: “H” 54PB1IInitialize signal input for the destination select Fixed at “L” 55PB2I Initialize signal input for the destination select ICF-S79/S79L: initialize mode at “H”, ICF-S79V: fixed at “L” 56PB3I Initialize signal input for the destination select ICF-S79

30、L: initialize mode at “H”, ICF-S79/S79V: fixed at “L” MAIN BOARD IC6 PD17071GB-517-1A7 (SYSTEM CONTROLLER, LIQUID CRYSTAL DISPLAY CONTROLLER, KEY CONTROL) Terminal for doubler circuit capacitor connection to develop liquid crystal display drive voltage *1 Band select signal FM (TV L) TV H/ WEATHER A

31、M (MW)LW BAND1 (pin !)“L”“L”“H”“H” BAND2 (pin !)“L”“H”“L”“H” 4-4.IC PIN FUNCTION DESCRIPTION RadioFans.CN 15 SECTION 5 EXPLODED VIEW 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 w

32、ith no reference num- ber in the exploded views are not supplied. Accessories and packing materials are given in the last of the electrical parts list. NOTE: -XX and -X mean standardized parts, so they may have some difference from the original one. Color Indication of Appearance Parts Example: KNOB

33、, BALANCE (WHITE) . . . (RED) Parts ColorCabinets Color Ref. No.Part No.DescriptionRemarkRef. No.Part No.DescriptionRemark not supplied not supplied not supplied LCD1 SP1 11 1 2 3 4 6 7 8 9 10 12 13 14 15 1617 18 1X-3374-190-1 CABINET (FRONT) ASSY (S79V) 1X-3374-190-2 CABINET (FRONT) ASSY (S79L) 1X-

34、3374-190-3 CABINET (FRONT) ASSY (S79) 23-016-880-01 PLATE (BUTTON), SHEET (S79V) 23-016-880-11 PLATE (BUTTON), SHEET (S79/S79L) * 33-016-863-01 CHASSIS * 4A-3679-918-A MAIN BOARD, COMPLETE (S79) * 4A-3679-919-A MAIN BOARD, COMPLETE (S79V) * 4A-3679-921-A MAIN BOARD, COMPLETE (S79L) 63-016-875-01 SHE

35、ET (BATTERY) (A) 73-016-869-01 TERMINAL (+), BATTERY 83-016-861-01 CABINET (REAR) 93-016-871-01 TERMINAL (+.) (A), BATTERY 103-016-872-01 TERMINAL (+.) (B), BATTERY 113-016-870-01 TERMINAL (), BATTERY 127-685-152-19 SCREW +BTP 3X25 TYPE2 N-S 133-016-876-01 SHEET (BATTERY) (B) 143-368-852-01 FOOT 153

36、-016-862-01 LID, BATTERY CASE 163-016-867-01 SPRING, SP 173-016-873-01 SPRING, RING 183-016-864-01 KNOB (VOL) SP11-504-918-11 SPEAKER (7.7CM) LCD11-801-854-11 DISPLAY PANEL, LIQUID CRYSTAL RadioFans.CN 16 SECTION 6 ELECTRICAL PARTS LIST Ref. No.Part No.DescriptionRemark NOTE: Due to standardization,

37、 replacements in the parts list may be different from the parts speci- fied in the diagrams or the components used on the set. -XX and -X mean standardized parts, so they may have some difference from the original one. RESISTORS All resistors are in ohms. METAL: Metal-film resistor. METAL OXIDE: Met

38、al oxide-film resistor. F: nonflammable Items marked “*” are not stocked since they are seldom required for routine service. Some delay should be anticipated when order- ing these items. SEMICONDUCTORS In each case, u: , for example: uA. .: A. .uPA. . : PA. . uPB. .: PB. .uPC. . : PC. . uPD. .: PD.

39、. CAPACITORS uF: F COILS uH: H Ref. No.Part No.DescriptionRemark KEY When indicating parts by reference number, please include the board. KEY BOARD (INCLUDED MAIN BOARD) * S1011-554-303-21 SWITCH, TACTILE (RADIO ON) S1021-554-303-21 SWITCH, TACTILE (PRESET TUNIG/PRESET TIMER 1) S1031-554-303-21 SWIT

40、CH, TACTILE (PRESET TUNIG/PRESET TIMER 2) S1041-554-303-21 SWITCH, TACTILE (PRESET TUNIG/PRESET TIMER 3) S1051-554-303-21 SWITCH, TACTILE (PRESET TUNIG/PRESET TIMER 4) S1061-554-303-21 SWITCH, TACTILE (PRESET TUNIG/PRESET TIMER 5) S1071-554-303-21 SWITCH, TACTILE (BAND) S1081-554-303-21 SWITCH, TACT

41、ILE (WEATHER) (S79V) S1091-554-303-21 SWITCH, TACTILE (TIMER SET/ON/OFF) S1101-554-303-21 SWITCH, TACTILE (TUNE/TIMER ADJUST +) S1111-554-303-21 SWITCH, TACTILE (TUNE/TIMER ADJUST ) S1121-554-303-21 SWITCH, TACTILE (CLOCK) S1131-554-303-21 SWITCH, TACTILE (OFF) * *A-3662-876-A MAIN BOARD, COMPLETE (

42、S79) *A-3662-879-A MAIN BOARD, COMPLETE (S79V) *A-3662-888-A MAIN BOARD, COMPLETE (S79L) (INCLUDING KEY BOARD) * *3-016-863-01 CHASSIS BPF11-236-711-21 FILTER, BAND PASS (S79/S79L) BPF11-239-813-21 FILTER, BAND PASS (S79V) BPF21-233-521-11 FILTER, BAND PASS (S79V) C11-163-141-00 CERAMIC CHIP0.001uF5

43、%50V (S79V) C21-163-141-00 CERAMIC CHIP0.001uF5%50V (S79V) C31-163-009-11 CERAMIC CHIP0.001uF10%50V (S79V) C41-163-217-11 CERAMIC CHIP1PF0.25PF50V (S79V) C51-163-141-00 CERAMIC CHIP0.001uF5%50V (S79V) C61-163-141-00 CERAMIC CHIP0.001uF5%50V (S79V) C71-163-085-00 CERAMIC CHIP2PF0.25PF50V (S79V) C81-1

44、63-231-11 CERAMIC CHIP15PF5%50V (S79V) C91-163-141-00 CERAMIC CHIP0.001uF5%50V (S79V) C101-163-217-11 CERAMIC CHIP1PF0.25PF50V (S79V) C111-163-009-11 CERAMIC CHIP0.001uF10%50V (S79V) C121-163-009-11 CERAMIC CHIP0.001uF10%50V (S79V) C131-124-584-00 ELECT100uF20%10V (S79V) C141-164-232-11 CERAMIC CHIP

45、0.01uF50V (S79V) C151-164-232-11 CERAMIC CHIP0.01uF50V (S79V) C161-164-232-11 CERAMIC CHIP0.01uF50V (S79V) C191-216-295-00 CONDUCTOR, CHIP (2012) C211-163-118-00 CERAMIC CHIP110PF5%50V (S79L) C221-163-133-00 CERAMIC CHIP470PF5%50V (S79L) C231-163-141-00 CERAMIC CHIP0.001uF5%50V C241-163-141-00 CERAM

46、IC CHIP0.001uF5%50V C251-216-295-91 CONDUCTOR, CHIP (2012) C261-104-396-11 ELECT10uF20%16V C271-163-141-00 CERAMIC CHIP0.001uF5%50V (S79V) C271-216-295-00 CONDUCTOR, CHIP (2012) (S79/S79L) C281-164-232-11 CERAMIC CHIP0.01uF50V C291-163-085-00 CERAMIC CHIP2PF0.25PF50V C301-163-141-00 CERAMIC CHIP0.00

47、1uF5%50V C311-163-125-00 CERAMIC CHIP220PF5%50V C321-163-085-00 CERAMIC CHIP2PF0.25PF50V C331-163-009-11 CERAMIC CHIP0.001uF10%50V MAIN RadioFans.CN 17 Ref. No.Part No.DescriptionRemarkRef. No.Part No.DescriptionRemark C341-164-232-11 CERAMIC CHIP0.01uF50V C351-163-131-00 CERAMIC CHIP390PF5%50V C361

48、-163-229-11 CERAMIC CHIP12PF5%50V C371-163-128-00 CERAMIC CHIP300PF5%50V (S79L) C381-163-251-11 CERAMIC CHIP100PF5%50V C391-164-232-11 CERAMIC CHIP0.01uF50V C401-164-232-11 CERAMIC CHIP0.01uF50V C411-164-346-11 CERAMIC CHIP1uF16V C421-164-232-11 CERAMIC CHIP0.01uF50V C431-163-251-11 CERAMIC CHIP100P

49、F5%50V C441-164-232-11 CERAMIC CHIP0.01uF50V C451-126-163-11 ELECT4.7uF20%50V C461-104-396-11 ELECT10uF20%16V C471-163-037-11 CERAMIC CHIP0.022uF10%25V C481-164-346-11 CERAMIC CHIP1uF16V C491-163-809-11 CERAMIC CHIP0.047uF10%25V (S79L) C501-123-618-11 ELECT22uF20%6.3V C511-126-925-11 ELECT470uF20%10V C521-164-004-11 CERAMIC CHIP0.1uF10%25V C531-135-091-00 TANTALUM CHIP 1uF20%16V C541-