Technics SC-EH760 Service Manual
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Also See for SC-EH760:
- Operating instructions manual (44 pages) ,
- Service manual (67 pages)
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Summary of Contents for Technics SC-EH760
- Page 3 N Deck 1 cassette holder open button (< OPEN) O Deck 1 cassette holder P Fast forward/rewind buttons (6, 5) Q Deck 2 cassette holder R Deck 2 cassette holder open button (< OPEN) S Counter reset, display buttons (COUNTER, RESET, DISPLAY) T Deck 1/deck 2 select button (DECK 1/2) U Playback buttons and indicators (", !) The color of the indicators depends on the operation taking place.
- Page 35 Notes Signal line : Playback signal line : Recording signal line CXA1552M-T4 ) indicates pin No. Right channel. IC201 DOLBY B NR MC14066BFEL (11) IC102 VR102(VR103) DECK 1/2 SELECT (14) PLAYBACK GAIN ADJ. (DECK2) (12) ATT1 (16) (11) (10) (10) ATT2 ATT3 ON/OFF...
- Page 36 To CD CHANGER,CD PLAYER BLOCK DIAGRAM To SOUND PROCESSOR BLOCK DIAGRAM MC14066BFEL CN601 Q602, Q108 IC202 D651,652 SYNC SIGNAL CONT. Regulator +10V Q604,D606 VREF +B(10V) (D.GND) Regulator TP609 D.GND Q701 Interface SCLK ENC/DEC DATA Q702,703 DATA IN DOLBY DECK REQ ON/OFF Interface DATA OUT...
- Page 37 [DECK 2] [DECK 1] EARTH TERMINAL P.C.B. R/P HEAD, PLAYBACK ERASE HEAD HEAD W601 1 . . . 5 1 . . . 5 1 . 5 1 . 5 W601 CP101 CP102 MAIN P.C.B. To CD CHANGER, CD PLAYER & SOUND PROCESSOR CP305 CP306...
- Page 38 : PLAYBACK SIGNAL LINE MAIN CIRCUIT :POSITIVE VOLTAGE LINE : RECORDING SIGNAL LINE R101 C123 5.6K 25V4.7 R157 9.6V C150 Q101 (0.2V) C143 C115 10V100 DECK1 CP101 470P 470P 2SJ164RTA HEAD SELECT (REC:ON) C117 330P PLAYBACK HEAD C129 R117 10V22 IC101 4.5V 4.5V...
- Page 39 : PLAYBACK SIGNAL LINE :POSITIVE VOLTAGE LINE : RECORDING SIGNAL LINE DOLBY R725 2.2K C207 270P C203 R209 R211 R221 C225 25V4.7 L201 25V4.7 C205 50V1 C218 R237 R220 50V0.1 DOLBY ON : 0V 4.8V 9.6V 4.7V 4.7V 4.6V 4.7V 0.4V 4.8V ON/OFF...
- Page 40 :POSITIVE VOLTAGE LINE MAIN CIRCUIT Q807 Q809 Q810 Q808 2SB621ARSTA DTC143EUT106 DTC143EUT106 2SB621ARSTA SOLENOID DRIVE SOLENOID DRIVE SOLENOID DRIVE SOLENOID DRIVE 10.3V R802 R823 R824 R812 10.3V 10.3V 10.3V 10.2V 10.2V 10.3V 4.7K 4.7K 4.7K 4.7K Q805 DTA143EUT106 MOTOR DRIVE CONT. Q803 2SD592ARSTA MECHANISM CIRCUIT (DECK1)
- Page 41 : PLAYBACK SIGNAL LINE :POSITIVE VOLTAGE LINE : RECORDING SIGNAL LINE 4.8V Q701,703 2SD1819ARTX R738 R747 5ms. 2V/DIV. INTERFACE 4.8V R704 T 16 ms. 1.9V 4.7K 0.1V 3.6V Q701 T 16 ms. R708 1.8V 4.7K 1.2V R737 R736 Q703 F=8MHz R705 L701 R711...
- Page 42 :POSITIVE VOLTAGE LINE OPERATION CIRCUIT :PLAYBACK SIGNAL LINE Q901 S907 DTA143EUT106 D907 SML79455C LED DRIVE Q903 R916 DTC143EUT106 S912 S906 LED DRIVE ( DECK 1/2 ) 4.2V 4.7K S911 S905 4.7K ( REV MODE ) ( DOLBY NR ) D905 SML79455C R914 Q904...
- Page 43 MAIN P.C.B. ELECTRICAL PARTS LOCATION Q303 Q306 L301 E C B Ref. Ref. Ref. Ref. Q305 C302 Q301 MAIN P.C.B. C303 E C B Q304 IC101 R101 R302 C114 IC102 R102 R303 C115 IC103 R103 R304 C116 R119 R118 IC201 R104 R305 C117...
- Page 44 OPERATION P.C.B. EARTH TERMINAL P.C.B. S901 OPEN) W601 S904 ( REC PAUSE) S903 (REP2827D-M) (TAPE EDIT) S911 (REV MODE) S905 (DOLBY NR) ELECTRICAL PARTS LOCATION Ref. No. Lo. No. Ref. No. Lo. No. S907 D907 EARTH TERMINAL P.C.B. W601 S906 OPERATION P.C.B.
- Page 45 ELECTRICAL PARTS LOCATION Ref. No. Lo. No. Ref. No. Lo. No. Ref. No. Lo. No. Ref. No. Lo. No. Ref. No. Lo. No. Ref. No. Lo. No. Ref. No. Lo. No. Ref. No. Lo. No. MECHANISM P.C.B. (DECK 1) IC951 D951 S952 S953...
- Page 46 BA7755AF CXA1998BQT6 0N2180RLC1 2SD1450RSTA CXA1552M-T4 16PIN MC14066BFEL 14PIN M38503M2400F 42PIN No.1 2SB621ARSTA 2SC3940AQSTA 2SD2144STA 2SJ164QTA 2SD592ARSTA 2SJ164RTA 2SD1819ARTX 2SD1328STXRA DTA143EUT106 DTC114EUT106 DTC143EUT106 DTC144EUT106 MA165TA MA4051MTA SML79455C MA111TX MA4056MTA Ca Ca Ca Ca Cathode Cathode Anode Anode Cathode Anode Anode...
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