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Technics SC-EH760 Service Manual
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Technics SC-EH760 Service Manual

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AD0004083C3
Tuner/Amplifier
SA-EH760
Colour
(S)....................Silver Type
Areas
(GC)..................Asia, Latin America, Middle Near East and Africa.
(GN)..................Oceania.
SPECIFICATIONS

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Summary of Contents for Technics SC-EH760

  • Page 1 AD0004083C3 Tuner/Amplifier SA-EH760 Colour (S)....Silver Type Areas (GC)....Asia, Latin America, Middle Near East and Africa. (GN)....Oceania. SPECIFICATIONS...

  • Page 2: Protection Circuitry

    1. Before Repairs 1. Turn off the power supply. Using a 10 , 10 W resistor, connect both ends of power supply capacitors (C701, C703 and C702, C704) in order to discharge the voltage. 2. Before turning the power supply on, after completion of repair, slowly apply the primary voltage by using a power supply voltage controller to make sure that the consumed current at 50 Hz in NO SIGNAL mode should be shown below.
  • Page 3 When the protection circuitry functions, the unit will not operate unless the power is first switched OFF and then ON again. 3. Accessories - AC power supply cord for (GC) area / (RJA0019-X)......1 - AC power supply cord for (GN) area / (RJA0035-X)......1 - AM loop antenna set / (RSA0022-J)......1 pc.
  • Page 4 - Remote control transmitter / (RAK-EHA28WH)....1 pc. - Remote control batteries / (R6/LR6, “AA”, UM-3)...2 pcs. Note: These are available on sales route. - Power plug adaptor for (GC) area only / (SJP5213- 2)......1 pc. 4. Location of Controls 5. Operation Checks and Component Replacement Procedures...
  • Page 5 - This section describes procedures for checking the operation of the major printed circuit boards and replacing the main components. - For reassembly after operation checks or replacement, reverse the respective procedures. Special reassembly procedures are described only when required. 5.1.
  • Page 6 - Check the operation P.C.B. as shown below. 5.3. Checking for the main P.C.B. - Follow the (Step 1) - (Step 3) of item 5.1. - Follow the (Step 1) - (Step 7) of item 5.2.
  • Page 8 - Check the main P.C.B. as shown below.
  • Page 9 5.4. Replacement for the regulator transistor - Follow the (Step 1) - (Step 3) of item 5.1. 5.5. Replacement for the power IC - Follow the (Step 1) - (Step 3) of item 5.1. - Follow the (Step 1) - (Step 7) of item 5.2. - Follow the (Step 1) - (Step 12) of item 5.3.

  • Page 10: To Supply Power Source

    6. To Supply Power Source This unit SA-EH760 is designed to operate on power supplied form system connected. / For system connections, refer to Fig. 6-1. Fig. 6-1. When the unit SA-EH760 has to test and service alone, use the following method to supply power source.

  • Page 11: Self-Diagnostic Function

    Notes: Use only this method when checking the voltage etc.. / In case of checking operations, use the system connections to supply power source. 7. Self-Diagnostic Function This unit is equipped with a self-diagnostic function which, in the event of a malfunction, automatically displays a code indicating the nature of the malfunction.
  • Page 12 7.2. To return to the normal display 1. For U70 CD/U70 DECK - Press an any operation button on the tuner/amplifier. - To re-display the code, switch the power off (POWER STANDBY button), and then switch power back on again. 2.
  • Page 13 - Correction Procedure 1. To check for correct insertion of the flat cables. - Insert each connector until you hear a click. - Insert the flat cables at the back of the unit in the order indicated. Refer to Fig. 7-2. Make sure the white side of the cables is on your right side.
  • Page 14 voltage is applied to speaker terminals.) 8. Type Illustration of ICs, Transistors and Diodes 9. Schematic Diagram Notes - This schematic diagram may be modified at any time with the development of new technology. Notes: S701: Voltage selector switch (VOLT ADJ) / (GC) area only S901: Power Standby/on switch ( S902:...
  • Page 15 S910: Tuning down switch (TUNING, S911: Tuning up switch (TUNING, S912: Tuner/band switch (TUNER/BAND) S913: Digital super woofer switch / (DIGITAL S.WOOFER) S914: KARAOKE switch (KARAOKE) S915: Echo switch (ECHO) VR401: Microphone volume control VR / (MIC VOL) VR901: Volume control VR (VOLUME) - Indicated voltage values are the standard values for the unit measured by the DC electronic circuit tester (high-impedance) with the chassis taken as standard.
  • Page 16 manufacturer´s specified parts shown in the parts list. - Caution! IC and LSI are sensitive to static electricity. Secondary trouble can be prevented by taking care during repair. Cover the parts boxes made of plastics with aluminum foil. Ground the soldering iron. Put a conductive mat on the work table.
  • Page 17 : FM OSC signal line : Center sp.drive signal line : Surround sp.drive signal line : Source signal line : Mic signal line 10. Schematic Diagram 11. Printed Circuit Board Diagram 12. Wiring Connection Diagram 13. Terminal Function of ICs...
  • Page 18 13.1. IC901 (LC8A524A5N28): / System Control/FL Drive Function Terminal Name 1 CHECK Clock check signal output 2 LC72 DI PLL data signal output 3 LC72 CE Chip enable signal output 4 LC72 DO IF count data/stereo detect signal input 5 LC72 CK Clock signal output Speaker select signal output Speaker select signal output...
  • Page 19 Function Terminal Name Grid signal output Not used, open Segment signal output Power supply terminal Segment signal output Power supply terminal (negative) Segment signal output Power supply terminal Segment signal output 78 REGIN0 Area select signal input 79 REGIN1 80 STANDBY O LED (STANDBY) drive signal output 81 TIMER...
  • Page 20 Function Terminal Name Not used, open Not used, open 94 SH CS Chip select signal output for Sound Processor 95 SH DO Serial communication signal to Sound Processor (Data signal output) SH DI Serial communication signal to Sound Processor (Data signal input) 97 SH CK Serial communication signal to...
  • Page 21 ZNR COVER RGW0343-S KNOB,VOLUME RHN90001 RKA0106-N FOOT RING RKF0606B-K1 BACK GRILL RKW0581-1V FL WINDOW RMN0427 CABLE HOLDER RYP0946A-S FRONT PANEL ASS'Y 12-1 RGB0025-A TECHNICS BADGE SHG1654 RUBBER XTB3+10JFZ SCREW XTB3+8JFZ SCREW XTW3+15T SCREW XTBS3+8JFZ1 SCREW RGW0178-1S KNOB,MIC VOL. RMN0582 HOLDER REM0057...
  • Page 22 Ref. No. Part No. Part Name & Description Remarks RQX7433ZA WARRANTY CARD (GN) C201,02 ECBT1H104KB5 50V 0.1U C371 ECA0JAK101XB 6.3V 100U (GC) C395,96 ECBT1H473KB5 50V 0.047U C401 ECBT1H223KB5 50V 0.022U C402 ECBT1H102KB5 50V 1000P C403 ECBT1C472KR5 16V 4700P C404 RCE1HKA3R3BG 50V 3.3U C405 ECBT1H471KB5...
  • Page 23 Ref. No. Part No. Part Name & Description Remarks C701-04 ECA1VM472E 4700U C705 ECBT1H103KB5 50V 0.01U C706 RCE1VKA100BG 35V 10U C707,08 ECBT1H473KB5 50V 0.047U C709 ECQV1H104JM3 50V 0.1U C710 ECBT1H473KB5 50V 0.047U C714 ECBT1H102KB5 50V 1000P C715 ECA1EAM472XE 4700U C717 ECA1CAK330XB 16V 33U C718...
  • Page 24 Ref. No. Part No. Part Name & Description Remarks C927,28 RCE1HKA4R7BG 50V 4.7U C931 ECA1CAK100XB 16V 10U C961 ECEA1CKS100 16V 10U CN601 RJU057W012 CONNECTOR(12P) CN602 RJU057W008 CONNECTOR(8P) CN603 RJU057W004 CONNECTOR(4P) CN701-10 RJS1A1101T1 CONNECTOR(1P) CN711-13 RJS1A1101T1 CONNECTOR(1P) (GN) CN714-20 RJS1A1101T1 CONNECTOR(1P) (GC) CN751 RJP1A4103...
  • Page 25 Ref. No. Part No. Part Name & Description Remarks D747 MA4068L DIODE (GN) D748 MA165 DIODE (GC) D749 MA165 DIODE D750 1SS291TA DIODE (GC) D751,52 1N5402BF DIODE D753-55 RL1N4003N02 DIODE D756,57 MA700 DIODE D758 MA165 DIODE D760 MA165 DIODE D761 RL1N4003N02 DIODE D901,02...
  • Page 26 Ref. No. Part No. Part Name & Description Remarks RPG4792 PACKING CASE(SYSTEM) (GN) RPQ0951 PAD(SYSTEM) RPG4396 PACKING CASE(SA) RPG4397 PACKING CASE(RS) RPG4398 PACKING CASE(SH) RPG4399 PACKING CASE(SL) RPN1194 PAD(SA) RPN1195-2 PAD(RS) RPN1196 PAD(SH) RPN1197 PAD(SL) RPF0139 PROTECTION BAG(F.B.) SPP740-1 SHEET PCB1 REP2964C-M MAIN P.C.B...
  • Page 27 Ref. No. Part No. Part Name & Description Remarks R202-04 ERDS2FJ104 1/4W 100K R211 ERDS2FJ271 1/4W 270 R229,30 ERDS2FJ102 1/4W 1K R401,02 ERDS2FJ681 1/4W 680 R403 ERDS2FJ223 1/4W 22K R404 ERDS2FJ471 1/4W 470 R405 ERDS2FJ472 1/4W 4.7K R406 ERDS2FJ474 1/4W 470K R407 ERDS2FJ472 1/4W 4.7K...
  • Page 28 Ref. No. Part No. Part Name & Description Remarks R619,20 ERDS2FJ124 1/4W 120K R621 ERDS2FJ154 1/4W 150K R622,23 ERDS2FJ124 1/4W 120K R624 ERDS2FJ154 1/4W 150K R626 ERDS2FJ102 1/4W 1K R627 ERDS2FJ474 1/4W 470K R628 ERDS2FJ223 1/4W 22K R629 ERDS2FJ102 1/4W 1K R631,32 ERDS2FJ392 1/4W 3.9K...
  • Page 29 Ref. No. Part No. Part Name & Description Remarks R766 ERDS1FJ470 R767 ERG1SJ270 1W 27 (GC) R767 ERD2FCJ4R7 (GN) R768 ERDS2FJ101 1/4W 100 R769 ERG1SJ270 1W 27 (GC) R770 ERDS2FJ104 1/4W 100K R771 ERDS2FJ102 1/4W 2.2K (GN) R771 ERDS2FJ122 1/4W 1.2K (GC) R772 ERDS2FJ223...
  • Page 30 R944 ERDS2FJ222 1/4W 2.2K...
  • Page 31 Ref. No. Part No. Part Name & Description Remarks R945 ERDS2FJ101 1/4W 100 R946 ERDS2FJ102 1/4W 1K R947,48 ERDS2FJ104 1/4W 100K R949 ERDS2FJ472 1/4W 4.7K R950 ERDS2FJ101 1/4W 100 R951 ERDS2FJ334 1/4W 330K R952 ERDS2TJ106T 1/4W 10M R953 ERDS2FJ101 1/4W 100 R954 ERDS2FJ104 1/4W 100K...
  • Page 32 16. Cabinet Parts Location 17. Packaging...
  • Page 33 F000400000YM/KH...
  • Page 34 To SOUND PROCESSOR SPEAKERS Z120 TUNER UNIT CP601 MAIN P.C.B. CP101 CP602 ..W501 CP603 ....W722 W901A ..
  • Page 35 Tuner amplifier 1 Standby/on switch (Í/I) 5 67 8 9 Press to switch the unit from on to standby mode or vice versa. In standby mode, the unit is still consuming a small amount of power. 2 Standby indicator (Í) DIGITAL S.WOOFER When the unit is connected to the AC mains supply, this indicator...
  • Page 36 Z120 TUNER UNIT (RAN0005EM) FM ANT AM ANT +B(FM) RF AMP MIXER COIL COIL +B(FM) FM IF FM / AM I F AMP, +B(FM) BUFFER DET / AM OSC, FM OSC MIX / FM MPX (LA1833MN) +B(FM) FM:ON DECODER BUFEER PHASE STEREO PILOT...
  • Page 37 W501 TUNER L/C TUNER R A.GND BU4053BCFE2 IC201 MID L SIGNAL SELECTOR MID R DC 10V TW L TW R SW CONT. To SOUND PROCESSOR BLOCK DIAGRAM -B(-7.5V) V.GND D.GND CE/REQ DATA CT.GND SH FL1 From POWER TRANSFORMER SH FL2 SYNC LC8A524A5N28 IC901...
  • Page 38 Q607 (Q608) MUTING Q606 MUTING LC72721NMTLM Q605 IC151 RDS SIGNAL MUTING DEMODULATOR VREF FLOUT 3,13 CLOCK RECOVERY REFERENCE (57kHz) (1187.5Hz) VOLTAGE 4,12 VREF RDCL 57kHz DATA MPX IN ANTIALIASING SMOOTHING RDDA DECODER FILTER FILTER (SCF) CLK(4.332MHz) RDS-ID RDS-ID DETECT OSC/DIVIDER TEST XOUT STDBY...

  • Page 39: Power Amp

    HEADPHONES R ch RSN311W64A IC601 POWER AMP Q911 (18) MUTING (Q912) D974 Q902,961 MUTING CONT D601 POWER CONTROL CIRCUIT (25) SURROUND SPEAKERS RLY605 +B11 CENTER SPEAKERS (8 ) (12) HIGH (6 ) RLY602 Q503,558 +B11 SPEAKERS SWITCH- (6 ) POWER CONTROL/ PROTECTION CIRCUIT Q618 D906...
  • Page 40 Q702,705 REGULATOR D702,704, T701 752,754,755 D701,703, 751,753 D956 (TRI-AMPLIFIER) Q703,704 REGULATOR Q723 RL701 AC IN Q706 L701 SWITCH- +B11 REGULATOR Q701 RLY702 Z701 REGULATOR Q709 POWER RELAY DRIVE Q708 SWITCH- SYNC D717~720 Q711,725 Q791 REGULATOR RELAY DRIVE +B11 Q707 D705 REGULATOR D902 D901...

  • Page 41: Electrical Parts Location

    OPERATION P.C.B. VR901 (VOLUME) W902B R923 S913 DIGITAL ELECTRICAL PARTS LOCATION S.WOOFER R995 Ref. No. Lo. No. Ref. No. Lo. No. Ref. No. Lo. No. R918 C902 C915 OPERATION P.C.B. R932 R956 R957 IC151 R510 R966 R919 Q961 IC901 R511 R967 Q901 R512...
  • Page 42 MAIN P.C.B. Q723 C735 C740 D737 R764 E C B W902A R763 CP101 C733 R563 W501 Q606 Q605 R564 R605 R606 R617 R618 Q554 D657 C554 R684 E C B W901A Q602 Q601 R683 CN781 D659 R570 C550 R559 C705 R558 IC201 C553...

  • Page 43: Power Supply Pcb

    POWER SUPPLY P.C.B. R725 C717 Q701 R723 Q705 E C B Q702 D760 R749 Q711 Q725 W701B D730 R765 D758 (REP2964A-M) ELECTRICAL PARTS LOCATION Ref. No. Lo. No. Ref. No. Lo. No. Ref. No. Lo. No. Ref. No. Lo. No. Ref.
  • Page 44 AC IN P.C.B. ELECTRICAL PARTS LOCATION Ref. No. Lo. No. Ref. No. Lo. No. R795 R794 Q791 SPEAKER TERMINAL P.C.B. D740 RL702 E C B T702(Power transformer) Q726 Q791 D500 D500 W2/W3 R773 D711 R771 R774 D740 R772 Q726 D741 R773 E C B D742...
  • Page 45 OPERATION P.C.B. VR901 (VOLUME) W902B R923 S913 DIGITAL ELECTRICAL PARTS LOCATION S.WOOFER R995 Ref. No. Lo. No. Ref. No. Lo. No. Ref. No. Lo. No. R918 C902 C915 OPERATION P.C.B. R932 R956 R957 IC151 R510 R966 R919 Q961 IC901 R511 R967 Q901 R512...
  • Page 46 MAIN P.C.B. Q723 C735 C740 D737 R764 E C B W902A R763 CP101 C733 R563 W501 Q606 Q605 R564 R605 R606 R617 R618 Q554 D657 C554 R684 E C B W901A Q602 Q601 R683 CN781 D659 R570 C550 R559 C705 R558 IC201 C553...
  • Page 47 POWER SUPPLY P.C.B. R725 C717 Q701 R723 Q705 E C B Q702 D760 R749 Q711 Q725 W701B D730 R765 D758 (REP2964A-M) ELECTRICAL PARTS LOCATION Ref. No. Lo. No. Ref. No. Lo. No. Ref. No. Lo. No. Ref. No. Lo. No. Ref.
  • Page 48 AC IN P.C.B. ELECTRICAL PARTS LOCATION Ref. No. Lo. No. Ref. No. Lo. No. R795 R794 Q791 SPEAKER TERMINAL P.C.B. D740 RL702 E C B T702(Power transformer) Q726 Q791 D500 D500 W2/W3 R773 D711 R771 R774 D740 R772 Q726 D741 R773 E C B D742...
  • Page 49 SCHEMATIC DIAGRAM- 1 NOTE: The number which noted at the connectors on the schematic diagram as : SOURCE SIGNAL LINE "SCHEMATIC DIAGRAM-1" or "SCHEMATIC DIAGRAM-2" OPERATION CIRCUIT indicates the schematic diagram serial number located on the left corner in the schematic diagram. FL901 (RSL0298- F) FL DISPLAY 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50...

  • Page 50: Schematic Diagram

    SCHEMATIC DIAGRAM- 2 : POSITIVE VOLTAGE LINE : NEGATIVE VOLTAGE LINE -27.6V Q901 UN4212TA B C D E F G H I J K L M N O P Q R RESET 5.2V 5.1V -27.6V - VP -26.9V 5.2V REMOCON -21.8V 2.6V -25V...
  • Page 51 SCHEMATIC DIAGRAM- 3 : POSITIVE VOLTAGE LINE OPERATION CIRCUIT : NEGATIVE VOLTAGE LINE : SOURCE SIGNAL LINE A B C C151 16V10 2.5V R155 IC151 VREF STDBY LC72721NMTLM C152 RDS SIGNAL 330P 2.5V DEMODULATOR MPX IN L151 100 H 5.1V R151 2.4V RDCL...
  • Page 52 SCHEMATIC DIAGRAM- 4 : POSITIVE VOLTAGE LINE : FM SIGNAL LINE : SURROUND SP.DRIVE SIGNAL LINE : NEGATIVE VOLTAGE LINE : AM SIGNAL LINE : CENTER SP.DRIVE SIGNAL LINE : SOURCE SIGNAL LINE MAIN CIRCUIT 7.5V W501 -7.5V TU L/C ch TUNER Rch C659 R631...
  • Page 53 SCHEMATIC DIAGRAM- 5 : POSITIVE VOLTAGE LINE : SURROUND SP.DRIVE SIGNAL LINE : NEGATIVE VOLTAGE LINE : CENTER SP.DRIVE SIGNAL LINE : SOURCE SIGNAL LINE 7.5V -7.5V IC601 RSN311W64A POWER AMP -61.6V 61.4V -30.7V 30.2V -0.2V -30.4V 29.9V -61.9V 61.5V C648 1000P R612...

  • Page 54: Power Supply Circuit

    SCHEMATIC DIAGRAM-6 : POSITIVE VOLTAGE LINE : SURROUND SP.DRIVE SIGNAL LINE MAIN CIRCUIT : NEGATIVE VOLTAGE LINE : CENTER SP.DRIVE SIGNAL LINE : SOURCE SIGNAL LINE L605 RL602 Q555 2SD2144STA R570 R649 SIGNAL LEVEL DET. 2.2M 1/2W10 C552 R559 7.5V 0.01 4.7K -7.5V...
  • Page 55 SCHEMATIC DIAGRAM- 7 : SOURCE SIGNAL LINE : POSITIVE VOLTAGE LINE : SURROUND SP.DRIVE SIGNAL LINE AC IN CIRCUIT : NEGATIVE VOLTAGE LINE : CENTER SP.DRIVE SIGNAL LINE SPEAKERS To SB-EH760 JK603 Q726 CENTER 2SC3940AQSTA (8 ) REGULATOR D746 JK601 RL1N4003N02 6.2V 10.9V...
  • Page 56 SCHEMATIC DIAGRAM-8 :FM SIGNAL LINE :AM SIGNAL LINE Z120 TUNER UNIT(RAN0005EM) :POSITIVE VOLTAGE LINE :FM OSC SIGNAL LINE :AM OSC SIGNAL LINE 2SC2059 FM MIXER 2SK360 6 ~ 220 RF AMP FM ANT (75 ) 0 ~ 220 2SK360 FM OSC 2SC2413 BUFFER AMP AM ANT...
  • Page 57 SCHEMATIC DIAGRAM-9 :POSITIVE VOLTAGE LINE :FM SIGNAL LINE :AM SIGNAL LINE :AM OSC SIGNAL LINE 10P ~ 270K ~ 270K ~ 680K 680K 1000P 2SC2413 2SC2413 DTA114 FM IF AMP FM IF AMP POWER SUPPLY (FM:ON) LA1833MN FM/AM IF AMP, DET/AM OSC,MIX/FM MPX 3.3K 0.47...
  • Page 58 SCHEMATIC DIAGRAM- 1 NOTE: The number which noted at the connectors on the schematic diagram as : SOURCE SIGNAL LINE "SCHEMATIC DIAGRAM-1" or "SCHEMATIC DIAGRAM-2" OPERATION CIRCUIT indicates the schematic diagram serial number located on the left corner in the schematic diagram. FL901 (RSL0298- F) FL DISPLAY 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50...
  • Page 59 SCHEMATIC DIAGRAM- 2 : POSITIVE VOLTAGE LINE : NEGATIVE VOLTAGE LINE -27.6V Q901 UN4212TA B C D E F G H I J K L M N O P Q R RESET 5.2V 5.1V -27.6V - VP -26.9V 5.2V REMOCON -21.8V 2.6V -25V...
  • Page 60 SCHEMATIC DIAGRAM- 3 : POSITIVE VOLTAGE LINE OPERATION CIRCUIT : NEGATIVE VOLTAGE LINE : SOURCE SIGNAL LINE A B C C151 16V10 2.5V R155 IC151 VREF STDBY LC72721NMTLM C152 RDS SIGNAL 330P 2.5V DEMODULATOR MPX IN L151 100 H 5.1V R151 2.4V RDCL...
  • Page 61 SCHEMATIC DIAGRAM- 4 : POSITIVE VOLTAGE LINE : FM SIGNAL LINE : SURROUND SP.DRIVE SIGNAL LINE : NEGATIVE VOLTAGE LINE : AM SIGNAL LINE : CENTER SP.DRIVE SIGNAL LINE : SOURCE SIGNAL LINE MAIN CIRCUIT 7.5V W501 -7.5V TU L/C ch TUNER Rch C659 R631...
  • Page 62 SCHEMATIC DIAGRAM- 5 : POSITIVE VOLTAGE LINE : SURROUND SP.DRIVE SIGNAL LINE : NEGATIVE VOLTAGE LINE : CENTER SP.DRIVE SIGNAL LINE : SOURCE SIGNAL LINE 7.5V -7.5V IC601 RSN311W64A POWER AMP -61.6V 61.4V -30.7V 30.2V -0.2V -30.4V 29.9V -61.9V 61.5V C648 1000P R612...
  • Page 63 SCHEMATIC DIAGRAM-6 : POSITIVE VOLTAGE LINE : SURROUND SP.DRIVE SIGNAL LINE MAIN CIRCUIT : NEGATIVE VOLTAGE LINE : CENTER SP.DRIVE SIGNAL LINE : SOURCE SIGNAL LINE L605 RL602 Q555 2SD2144STA R570 R649 SIGNAL LEVEL DET. 2.2M 1/2W10 C552 R559 7.5V 0.01 4.7K -7.5V...
  • Page 64 SCHEMATIC DIAGRAM- 7 : SOURCE SIGNAL LINE : POSITIVE VOLTAGE LINE : SURROUND SP.DRIVE SIGNAL LINE AC IN CIRCUIT : NEGATIVE VOLTAGE LINE : CENTER SP.DRIVE SIGNAL LINE SPEAKERS To SB-EH760 JK603 Q726 CENTER 2SC3940AQSTA (8 ) REGULATOR D746 JK601 RL1N4003N02 6.2V 10.9V...
  • Page 65 SCHEMATIC DIAGRAM-8 :FM SIGNAL LINE :AM SIGNAL LINE Z120 TUNER UNIT(RAN0005EM) :POSITIVE VOLTAGE LINE :FM OSC SIGNAL LINE :AM OSC SIGNAL LINE 2SC2059 FM MIXER 2SK360 6 ~ 220 RF AMP FM ANT (75 ) 0 ~ 220 2SK360 FM OSC 2SC2413 BUFFER AMP AM ANT...
  • Page 66 SCHEMATIC DIAGRAM-9 :POSITIVE VOLTAGE LINE :FM SIGNAL LINE :AM SIGNAL LINE :AM OSC SIGNAL LINE 10P ~ 270K ~ 270K ~ 680K 680K 1000P 2SC2413 2SC2413 DTA114 FM IF AMP FM IF AMP POWER SUPPLY (FM:ON) LA1833MN FM/AM IF AMP, DET/AM OSC,MIX/FM MPX 3.3K 0.47...
  • Page 67 LC8A524A5N28 RSN311W64A 2SD2137PQTA BU4053BCFE2 16PIN 20PIN UN411FTA LC72721NMTLM ... UN4115TA ..UN4211TA ..UN4212TA ..No.1 MA4091HTA 2SA1995RSTA...

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