Technics SA-EH760 Service Manual Download Page 1

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Service Manual

TOP

AD0002037C2

Tuner/Amplifier

●

SA-EH760

Colour

(S).....................Silver Type

Areas

(E).....................Europe.

(EB)..................Great Britain.

(EG)..................Germany, Italy, France, Netherlands and Denmark.

file:///C|/Documents%20and%20Settings/Administrator/Plocha/SA-EH760/s0000000000.htm (1 of 3) [2.4.2003 3:38:17]

Jeanne van Woerkom electra

www.freeservicemanuals.info

Summary of Contents for SA-EH760

Page 1: ...EXT AD0002037C2 Tuner Amplifier SA EH760 Colour S Silver Type Areas E Europe EB Great Britain EG Germany Italy France Netherlands and Denmark file C Documents 20and 20Settings Administrator Plocha SA...

Page 2: ...000 Matsushita Electric Industrial Co Ltd All rights reserved Unauthorized copying and distribution is a violation of law file C Documents 20and 20Settings Administrator Plocha SA EH760 s0000000000 ht...

Page 3: ...0Settings Administrator Plocha SA EH760 s0000000000 htm TOP NEXT file C Documents 20and 20Settings Administrator Plocha SA EH760 s0000000000 htm 3 of 3 2 4 2003 3 38 17 Jeanne van Woerkom electra www...

Page 4: ...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 show...

Page 5: ...speaker connection wires are shorted or if speaker systems with an impedance less than the indicated rated impedance of this unit are used If this occurs follow the procedures outlined below 1 Switch...

Page 6: ...er supply cord for EB area RJA0053 2X 1 pc AM loop antenna set RSA0022 J 1 pc FM indoor antenna RSA0007 1 pc Speaker cords REE0393 2 pcs REE0984 2 pcs REE0985 2 pcs Remote control transmitter RAK EHA2...

Page 7: ...tteries R6 LR6 AA UM 3 2 pcs Note These are available on sales route Antenna plug adaptor for EB area only SJP9009 1 pc TOP PREVIOUS NEXT file C Documents 20and 20Settings Administrator Plocha SA EH76...

Page 8: ...ator Plocha SA EH760 s0400000000x htm 4 Caution for AC Mains Lead TOP PREVIOUS NEXT file C Documents 20and 20Settings Administrator Plocha SA EH760 s0400000000x htm 1 of 2 2 4 2003 3 39 39 Jeanne van...

Page 9: ...ings Administrator Plocha SA EH760 s0400000000x htm TOP PREVIOUS NEXT file C Documents 20and 20Settings Administrator Plocha SA EH760 s0400000000x htm 2 of 2 2 4 2003 3 39 39 Jeanne van Woerkom electr...

Page 10: ...r Plocha SA EH760 s0500000000x htm 5 Location of Controls TOP PREVIOUS NEXT TOP PREVIOUS NEXT file C Documents 20and 20Settings Administrator Plocha SA EH760 s0500000000x htm 2 4 2003 3 39 56 Jeanne v...

Page 11: ...ssembly after operation checks or replacement reverse the respective procedures Special reassembly procedures are described only when required 6 1 Checking for the AC IN P C B 6 2 Checking for the ope...

Page 12: ...ecking for the operation P C B TOP PREVIOUS NEXT Follow the Step 1 Step 3 of item 6 1 Check the operation P C B as shown below file C Documents 20and 20Settings Administrator Plocha SA EH760 s06020000...

Page 13: ...tings Administrator Plocha SA EH760 s0602000000 htm TOP PREVIOUS NEXT file C Documents 20and 20Settings Administrator Plocha SA EH760 s0602000000 htm 2 of 2 2 4 2003 3 40 49 Jeanne van Woerkom electra...

Page 14: ...3 Checking for the main P C B TOP PREVIOUS NEXT Follow the Step 1 Step 3 of item 6 1 Follow the Step 1 Step 6 of item 6 2 file C Documents 20and 20Settings Administrator Plocha SA EH760 s0603000000 h...

Page 15: ...and 20Settings Administrator Plocha SA EH760 s0603000000 htm file C Documents 20and 20Settings Administrator Plocha SA EH760 s0603000000 htm 2 of 3 2 4 2003 3 41 08 Jeanne van Woerkom electra www free...

Page 16: ...r Plocha SA EH760 s0603000000 htm Check the main P C B as shown below TOP PREVIOUS NEXT file C Documents 20and 20Settings Administrator Plocha SA EH760 s0603000000 htm 3 of 3 2 4 2003 3 41 08 Jeanne v...

Page 17: ...htm 6 4 Replacement for the regulator transistor TOP PREVIOUS NEXT Follow the Step 1 Step 3 of item 6 1 TOP PREVIOUS NEXT file C Documents 20and 20Settings Administrator Plocha SA EH760 s0604000000 h...

Page 18: ...wer IC TOP PREVIOUS NEXT Follow the Step 1 Step 3 of item 6 1 Follow the Step 1 Step 6 of item 6 2 Follow the Step 1 Step 10 of item 6 3 TOP PREVIOUS NEXT file C Documents 20and 20Settings Administrat...

Page 19: ...Fig 7 1 When the unit SA EH760 has to test and service alone use the following method to supply power source 1 Short the section between W902A Pin 3 and C740 GND Refer to Fig 7 2 2 Connect this unit t...

Page 20: ...method when checking the voltage etc In case of checking the operations use the system connections to supply power source TOP PREVIOUS NEXT file C Documents 20and 20Settings Administrator Plocha SA E...

Page 21: ...lays a code indicating the nature of the malfunction Use this self diagnostic function when servicing the unit 8 1 To display the malfunction code 8 2 To return to the normal display 8 3 Display conte...

Page 22: ...Automatically displays on the tuner amplifier when a malfunction occurs Refer to Fig 8 1 F61 Automatically displays on the tuner amplifier when a malfunction occurs Refer to Fig 8 1 Fig 8 1 file C Do...

Page 23: ...F61 If F61 is displayed the power will automatically be switched off and the standby indicator will light up F61 will be displayed for 3 seconds and then the clock will be displayed To re display the...

Page 24: ...000 htm 8 3 Display contents TOP PREVIOUS NEXT 8 3 1 U70 CD U70 DECK displayed automatically 8 3 2 F61 TOP PREVIOUS NEXT file C Documents 20and 20Settings Administrator Plocha SA EH760 s0803000000 htm...

Page 25: ...he tuner amplifier the tape deck or CD Changer cannot be operated by remote control Correction Procedure 1 To check for correct insertion of flat cables Insert each connector until you hear a click In...

Page 26: ...orrected by items 1 and 2 above this indicates a faulty IC SA EH760 IC901 LC8A524A5N28 SL EH760 IC451 M38504M6200F RS EH760 IC701 M38503M2400F Check these ICs and replace TOP PREVIOUS NEXT file C Docu...

Page 27: ...it automatically switches back off making it impossible to switch power on Correction procedure Faulty Tuner Amplifier SA EH760 output IC IC601 When a DC voltage is applied to speaker terminals TOP P...

Page 28: ...e development of new technology Notes S901 Power Standby on switch I S902 ECO mode switch MODE S903 Clock timer demo switch CLOCK TIMER DEMO S904 Play timer record timer switch PLAY REC S905 FM mode s...

Page 29: ...input switch 6 CH DISCRETE INIPUT 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 RDS display mode...

Page 30: ...rtant for safety Furthermore special parts which have purposes of fire retardant resistors high quality sound capacitors low noise resistors etc are used When replacing any of components be sure to us...

Page 31: ...htm Positive voltage line Negative voltage line AM signal line AM OSC signal line FM signal line FM OSC signal line file C Documents 20and 20Settings Administrator Plocha SA EH760 s0900000000x htm 4...

Page 32: ...0000000x htm Center sp drive signal line Surround sp drive signal line Source signal line TOP PREVIOUS NEXT file C Documents 20and 20Settings Administrator Plocha SA EH760 s0900000000x htm 5 of 5 2 4...

Page 33: ...or Plocha SA EH760 s1000000000x htm 10 Schematic Diagram TOP PREVIOUS NEXT TOP PREVIOUS NEXT file C Documents 20and 20Settings Administrator Plocha SA EH760 s1000000000x htm 2 4 2003 3 45 34 Jeanne va...

Page 34: ...cha SA EH760 s1100000000x htm 11 Printed Circuit Board Diagram TOP PREVIOUS NEXT TOP PREVIOUS NEXT file C Documents 20and 20Settings Administrator Plocha SA EH760 s1100000000x htm 2 4 2003 3 46 00 Jea...

Page 35: ...760 s1200000000x htm 12 Type Illustration of ICs Transistors and Diodes TOP PREVIOUS NEXT TOP PREVIOUS NEXT file C Documents 20and 20Settings Administrator Plocha SA EH760 s1200000000x htm 2 4 2003 3...

Page 36: ...locha SA EH760 s1300000000x htm 13 Wiring Connection Diagram TOP PREVIOUS NEXT TOP PREVIOUS NEXT file C Documents 20and 20Settings Administrator Plocha SA EH760 s1300000000x htm 2 4 2003 3 46 37 Jeann...

Page 37: ...00x htm 14 Terminal Function of ICs TOP PREVIOUS NEXT 14 1 IC901 LC8A524A5N28 System Control FL Drive TOP PREVIOUS NEXT file C Documents 20and 20Settings Administrator Plocha SA EH760 s1400000000x htm...

Page 38: ...used connected to VDD 11 AC IN I Power failure detect signal input 12 RESET I Reset signal input 13 X IN I Oscillator connected terminal 32 7 kHz 14 X OUT O 15 VSS GND terminal 16 XC IN I Oscillator c...

Page 39: ...t 78 REGIN0 I Area select signal input 79 REGIN1 80 STANDBY O LED STANDBY drive signal output 81 TIMER O LED TIMER drive signal output 82 S W LED O LED DIGITAL S WOOFER drive signal output 83 LOUNGE L...

Page 40: ...signal to Sound Processor Data signal input 97 SH CK I Serial communication signal to Sound Processor Clock signal input 98 E DET I Unusual condition detect signal input 99 CR TIMER I O TIME CONSTANT...

Page 41: ...ator Plocha SA EH760 s1500000000x htm 15 Block Diagram TOP PREVIOUS NEXT TOP PREVIOUS NEXT file C Documents 20and 20Settings Administrator Plocha SA EH760 s1500000000x htm 2 4 2003 3 47 48 Jeanne van...

Page 42: ...French Italian ID Netherlands Danish The parenthesized indications in the Remarks columns specify the areas Refer to the cover page for area The marking RTL indicates that Retention Time is Limited f...

Page 43: ...1 15 XTB3 8JFZ SCREW 13 16 XTW3 15T SCREW 2 17 XTBS3 8JFZ1 SCREW 2 18 RLBT4001 N FERRITE CORE 1 19 RMN0582 HOLDER 1 20 SHR9112 RIVET 1 21 XTB3 20JFZ SCREW 1 A1 RAK EHA28WH REMOTE CONTROLLER 1 A1 1 RKK...

Page 44: ...02 ECBT1H104KB5 50V 0 1U 2 C395 96 ECBT1H473KB5 50V 0 047U 2 C509 10 ECBT1H103KB5 50V 0 01U 2 C550 ECBT1C103NS5 16V 0 01U 1 C551 ECA1HAK2R2XB 50V 2 2U 1 C552 ECBT1H103KB5 50V 0 01U 1 C553 RCE1HKAR47B...

Page 45: ...5 50V 0 047U 2 C709 ECQV1H104JM3 50V 0 1U 1 C710 ECBT1H473KB5 50V 0 047U 1 C714 ECBT1H102KB5 50V 1000P 1 C715 ECA1EAM472XE 25V 4700U 1 C717 ECA1CAK330XB 16V 33U 1 C718 RCE1AKA101BG 10V 100U 1 C719 20...

Page 46: ...R2 50V 2 2U 1 C915 ECBT1H103KB5 50V 0 01U 1 C916 EEAFC0J101B 6 3V 100U 1 C917 ECBT1H103KB5 50V 0 01U 1 C918 ECEA0JKS101 6 3V 100U 1 C919 20 RCE1HKA4R7BG 50V 4 7U 2 C921 ECBT1H102KB5 50V 1000P 1 C922 E...

Page 47: ...57 59 MA165 DIODE 3 D701 04 1N5402BF DIODE 4 D705 RL1N4003N02 DIODE 1 D711 RL1N4003N02 DIODE 1 D715 MA165 DIODE 1 D717 20 RL1N4003N02 DIODE 4 D721 MA4300M DIODE 1 D723 MA4150M DIODE 1 D725 MA4082LTA D...

Page 48: ...73 MA4030M DIODE 1 D974 MA165 DIODE 1 F1 XBA2C20TB0 FUSE T2A 1 FL901 RSL0298 F FL 1 IC151 LC72721NMTLM IC 1 IC201 BU4053BCFE2 IC 1 IC601 RSN311W64A IC 1 IC901 LC8A524A5N28 IC 1 JK601 02 RJH5603 1J 6P...

Page 49: ...1 SHEET 1 PCB1 REP2964A M MAIN PCB 1 RTL PCB2 REP2966A S SUB PCB 1 E EG RTL PCB2 REP2966B S SUB PCB 1 EB RTL Q503 2SC3327A TRANSISTOR 1 Q551 2SA1995RSTA TRANSISTOR 1 Q554 2SA1995RSTA TRANSISTOR 1 Q555...

Page 50: ...S2FJ104 1 4W 100K 3 R211 ERDS2FJ271 1 4W 270 1 R229 30 ERDS2FJ102 1 4W 1K 2 R509 12 ERDS2FJ470 1 4W 47 4 R544 ERDS2FJ103 1 4W 10K 1 R546 47 ERDS2FJ562 1 4W 5 6K 2 R548 ERDS2FJ102 1 4W 1K 1 R551 ERDS2F...

Page 51: ...1 R628 ERDS2FJ223 1 4W 22K 1 R629 ERDS2FJ102 1 4W 1K 1 R631 32 ERDS2FJ392 1 4W 3 9K 2 R635 ERDS2FJ222 1 4W 2 2K 1 R637 ERDS2FJ153 1 4W 15K 1 R638 ERDS2FJ683 1 4W 68K 1 R639 40 ERDS1FJ100 1 2W 10 2 R64...

Page 52: ...DS2FJ221 1 4W 220 1 R738 ERDS2FJ392 1 4W 3 9K 1 R739 ERDS2FJ473 1 4W 47K 1 R749 ERDS2FJ102 1 4W 1K 1 R763 ERDS2FJ472 1 4W 4 7K 1 R764 ERDS2FJ331 1 4W 330 1 R765 ERDS1FJ221 1 2W 220 1 R766 ERDS1FJ470 1...

Page 53: ...1 R916 ERDS2FJ152 1 4W 1 5K 1 R918 ERDS2FJ103 1 4W 10K 1 R919 ERDS2FJ153 1 4W 15K 1 R921 22 ERDS2FJ103 1 4W 10K 2 R923 ERDS2FJ223 1 4W 22K 1 R924 25 ERDS2FJ102 1 4W 1K 2 R926 ERDS2FJ222 1 4W 2 2K 1 R9...

Page 54: ...1M 1 R969 ERDS2FJ272 1 4W 2 7K 1 R975 ERDS2FJ154 1 4W 150K 1 R976 ERDS2FJ104 1 4W 100K 1 R984 ERDS2FJ221 1 4W 220 1 R986 ERDS2FJ152 1 4W 1 5K 1 R987 88 ERDS2FJ102 1 4W 1K 2 R990 ERDS2FJ104 1 4W 100K...

Page 55: ...1 EF0EC6004T4 OSCILLATOR 1 X902 RSXD32K7S02 OSCILLATOR 1 Z120 RAN0005EM TUNER UNIT 1 Z701 ERZV10V511CS COMPONENT COMBINATION 1 Z901 RCDGP1U28XD REMOTE SENSOR 1 TOP PREVIOUS NEXT file C Documents 20and...

Page 56: ...Plocha SA EH760 s1700000000x htm 17 Cabinet Parts Location TOP PREVIOUS NEXT TOP PREVIOUS NEXT file C Documents 20and 20Settings Administrator Plocha SA EH760 s1700000000x htm 2 4 2003 3 48 34 Jeanne...

Page 57: ...ministrator Plocha SA EH760 s1800000000x htm 18 Packaging TOP PREVIOUS TOP PREVIOUS file C Documents 20and 20Settings Administrator Plocha SA EH760 s1800000000x htm 2 4 2003 3 48 57 Jeanne van Woerkom...

Page 58: ...ET AM OSC MIX FM MPX LA1833MN 15 PILOT CANCEL PHASE DET 16 VCO FF FF PILOT DET FF AM DET DECODER BO1 6 IO2 12 19 Vss Power ON RESET PLL FREQUENCY SYNTHESIZER LC72131M B2 GND 5 7 ST MONO FM AM SD FMDET...

Page 59: ...NC B6 Rch Rch B3 To SOUND PROCESSOR BLOCK DIAGRAM LC72 CE LC72 DO ST LC72 CK DATA1 CLK1 DATA IN CE1 3 4 5 LC72 DI 2 LC8A524A5N28 IC901 SYSTEM CONTROL FL DRIVE Rch 94 SH CS 97 SH CK 95 96 SH DO SH DI S...

Page 60: ...A RDS CLK 27 CLOCK RECOVERY 1187 5Hz RDDA RDCL PCL RDS ID IDR RDS ID DETECT 57kHz BPF SCF PLL 57kHz VREF CIN FLOUT VREF VDD Vss MPX IN T1 T2 T3 T4 TEST XOUT XIN STDBY OSC DIVIDER CLK 4 332MHz 10 11 20...

Page 61: ...SN311W64A IC601 POWER AMP B3 D601 B1 D602 B2 Q601 602 9 B8 Q551 554 555 13 POWER 98 E DET HP SW 26 AC IN AC IN 86 87 ECO ECO POWER POWER 11 B7 1 CHECK TP 14 N Q503 558 B4 51 VP VP 85 MUTE D906 SWITCH...

Page 62: ...L DISPLAY FL901 Q708 B3 POWER SYNC ECHO Q726 B7 B9 B10 D902 D901 AC IN D956 TRI AMPLIFIER D746 REGULATOR REGULATOR REGULATOR REGULATOR SWITCH ING SWITCH ING REGULATOR REGULATOR REGULATOR RELAY DRIVE R...

Page 63: ...Jeanne van Woerkom electra www freeservicemanuals info...

Page 64: ...Jeanne van Woerkom electra www freeservicemanuals info...

Page 65: ...1 E C B JK903 PHONES 8 1 2 7 4 3 5 W905 TP OPERATION P C B A REP2964A M DIGITAL S WOOFER S911 TUNING S910 TUNING S901 D306 ELECTRICAL PARTS LOCATION OPERATION P C B A Ref No Lo No Ref No Lo No Ref No...

Page 66: ...8 C648 C605 C606 C610 C604 C603 C649 C620 C632 C650 C707 C714 C731 C741 C761 B C E Q707 1 5 8 910 15 16 IC201 C554 C551 C553 C721 C660 C622 C659 C601 C602 C735 1 2 3 4 5 6 7 8 9 10 11 CP101 R203 R204...

Page 67: ...564 R570 R571 R572 R591 R597 R598 R601 R602 R603 R604 R605 R606 R607 R608 R609 R610 R611 R612 R614 R615 R617 R618 R619 R620 R621 R622 R623 R624 R626 R688 R691 R702 R703 R704 R705 R707 R708 R712 R719 R...

Page 68: ...W2 W1 J J J J J J 1 2 3 4 5 6 7 8 9 10 1 2 3 4 T701 Power transformer REP2964A M REP2966A M E EG REP2966B M EB J ELECTRICAL PARTS LOCATION POWER TRANSFORMER A P C B E Ref No Lo No Ref No Lo No POWER T...

Page 69: ...K R914 1K R913 820 R908 4 7K R907 3 3K R906 2 2K R905 1 8K R904 1 5K R903 1 2K R902 1K R901 820 C919 50V4 7 FL DISPLAY 1 6 8 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...

Page 70: ...96 97 98 99 100 P10 P9 P8 P7 V DD 3 P6 P5 P4 P3 P2 P1 NC NC 1G 2G 3G 4G 5G 6G 7G NC REMOCON RDS DATA RDS CLK HP SW MIC DET VR JOGA VR JOGB NC GND SH REQ KEY KARAOKE KEY TU VDD1 XC OUT XC IN VSS X OUT...

Page 71: ...00K C155 1000P C153 1000P C160 1000P C159 6 3V47 L152 100 H R155 120 D151 MA4051MTA 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 VREF STDBY 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 MPX IN VDD VSS FL...

Page 72: ...8 9 10 11 12 13 14 15 DC 10V To MAIN CIRCUIT of SOUND PROCESSOR To TUNER UINT on SCHEMATIC DIAGRAM 9 10 4 5 C735 0 047 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 R629 1K A B B A R563 2 7K R564 2 7K C660 16V1...

Page 73: ...0 D752 D702 D704 C761 0 1 R703 1W2 2K R704 1W2 2K R705 1W2 2K D703 D701 D751 C703 35V4700 C701 35V4700 D701 703 751 1N5402BM21 C709 0 1 IC601 RSN311W64A POWER AMP Q708 Q706 D757 MA700ATA 1 2 3 4 5 6 7...

Page 74: ...65TA D730 MA4091HTA R770 100K D739 MA165TA R765 1 2W220 R724 3 9K C720 0 047 R720 3 9K C722 16V100 C718 10V100 C717 16V33 D723 MA4150HTA R723 5 6K C719 0 047 R725 10 R721 1 4W4 7 R766 1 2W47 D736 MA16...

Page 75: ...C646 0 047 C645 0 047 A B C CENTER 8 R ch L ch SURROUND 8 AC IN JK701 L701 F1 TA2 T702 Z701 C791 1000P 3 1 2 4 RL702 R795 3 9K R794 47K Q791 2SD2144STA RELAY DRIVE D740 MA165TA D745 MA4051MTA R772 22K...

Page 76: ...CY SYNTHESIZER AM ANT EXT LOOP FM ANT 75 SCHEMATIC DIAGRAM 8 100 0 01 100 2SC2413 BUFFER AMP 2SK360 FM OSC 2SK360 RF AMP 22P 15P 22P 0 022 2 7K 47P 33K 100K 2P 8P 10K 10K 33K 33K 100K 0 022 100 27P 2P...

Page 77: ...4 7 47K 1000P 3 3 A D B C 10K 0 01 330 1000P LA1833MN FM AM IF AMP DET AM OSC MIX FM MPX A B B A D A 2SC2712 SWITCHING 3 3K 2SC2413 FM IF AMP 2SC2413 FM IF AMP 330 SCHEMATIC DIAGRAM 9 11 1 3 2 4 5 6...

Page 78: ...74PQAU C B E 2SA1995RSTA 2SC5398RSTA 2SD2144STA E C B MA165TA MA700ATA 1SS291TA Ca A Anode Cathode 1N5402BM21 RL1N4003N02 Ca A Anode Cathode SB360L6508 Ca A Anode Cathode 2SA1995RSTA 2SC5398RSTA E C B...

Page 79: ...CP603 SPEAKERS C POWER SUPPLY P C B W701B 1 10 T702 Power transformer D AC IN P C B W1 W2 W3 1 4 CN603 1 8 CN602 1 12 CN601 AC IN CENTER SURROUND SPEAKERS E POWER TRANSFORMER A P C B 1 4 W722 1 10 T7...

Page 80: ...O INPUT SELECTOR TUNER BAND DIGITAL S WOOFER VOLUME UP DOWN FM AUTO MONO 6CH DISCRETE INPUT PLAY REC CLOCK TIMER DEMO 5 67 8 9 3 4 1 2 A A B l _ r 1 m o p q z y 9 t s n u v w x H AV EFFECT SLEEP CH SE...

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