Panasonic SA-HT280 Service Manual
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Panasonic SA-HT280 Service Manual

Av control stereo receiver
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ORDER No.MD0004059C1
A1
AV Control Stereo Receiver
SA-HT280
Colours
(K)...........Black Type
(S)...........Silver Type
Areas
PP...........U.S.A. and Canada
System : SC-HT280
SPECIFICATIONS
Specification

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Summary of Contents for Panasonic SA-HT280

  • Page 1 ORDER No.MD0004059C1 AV Control Stereo Receiver SA-HT280 Colours (K)...Black Type (S)...Silver Type Areas PP...U.S.A. and Canada System : SC-HT280 SPECIFICATIONS Specification...
  • Page 2 AMPLIFIER SECTION Rated minimum sine wave RMS power output 20Hz - 20kHz both channels driven / 0.05% total harmonic distortion 100W per channel (8 1kHz continuous power output both channels driven 0.05% total harmonic distortion 105W per channel (8 Total harmonic distortion rated power at 20Hz - 20kHz 0.05% (8 half power at 1kHz...
  • Page 3 Total harmonic distortion MONO / STEREO 0.2% / 0.3% MONO / STEREO 73dB / 67dB Frequency response 20Hz - 15kHz, +1dB, -2dB Alternate channel selectivity 65dB Capture ratio 1.5dB Image rejection at 98MHz 40dB Spurious response rejection at 75dB 98MHz AM suppression 50dB Stereo separation...

  • Page 4: Safety Precaution

    1. Safety Precaution (This “Safety Precaution” is applied only in U.S.A.) 1. Before servicing, unplug the power cord to prevent an electric shock. 2. When replacing parts, use only manufacturer’s recommended components for safety. 3. Check the condition of the power cord. Replace if wear or damage is evident.

  • Page 5: Before Repair And Adjustment

    Fig.1 Fig.2 2. Before Repair and adjustment Disconnect AC power, discharge Power Supply Capacitors C703, C704, C705 and C706 through a , 5W resistor to ground. / DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices. / After repairs are completed, restore power gradually using a variac, to avoid overcurrent.

  • Page 6: Location Of Controls

    5. Location of Controls 5.1. Main unit 1. Power “ /I” switch (POWER, /I) - 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.
  • Page 7 6. Input selector (INPUT SELECTOR) 7. Volume control (VOLUME) 8. Speaker select buttons (SPEAKERS A, B) 9. Help/reset button (-HELP, —RESET) 10. Headphones jack (PHONES) 11. Display section 12. Tape monitor button (TAPE MONITOR) 13. Bass control (BASS) 14. Treble control (TREBLE) 15.
  • Page 8 2. Monaural indicator (MONO) 3. Stereo indicator (STEREO) 4. Memory indicator ( ) 5. Signal format indicators ( PRO LOGIC, DIGITAL) 6. Front speaker indicator (-SPEAKERS- 7. Low impedance indicator (LOW IMP) 8. Display 9. Frequency unit indicator (kHz, MHz) 10.
  • Page 9 1. Power button ( ) button ( ) button ( button ( ) 5. Top menu button (TOP MENU) 6. Display button (DISPLAY) 7. Surround mode select button (SURROUND) 8. Stereo mode select button (STEREO) 9. Speaker channel select button (LEVEL) 10.

  • Page 10: Operation Checks And Component Replacement Procedures

    button ( 15. Cursor/enter buttons 16. Menu button (MENU) 17. SFC mode select button (SFC) 18. Test button (TEST) 19. Delay time/level adjust buttons (-, +) 20. Direct tuning/disc enter button / (DIRECT TUNING/DISC ENTER) 10/enter button ( 10/ENTER) 22. Numbered buttons 23.
  • Page 11 - Check the FL P.C.B. as shown above. - Check the surround P.C.B. as shown below.
  • Page 12 - Check the IN/OUT terminal P.C.B. as shown below. 7.2. Checking for the DTS P.C.B. - Follow the (Step 1) - (Step 3) of item 7.1.
  • Page 13 - Check the DTS P.C.B. as shown below. 7.3. Checking for the main P.C.B. - Follow the (Step 1) - (Step 3) of item 7.1.
  • Page 14 / / / / / / - Check the main P.C.B. as shown below.
  • Page 15 / / / / / / 7.4. Replacement for the power IC and regulator transistor - Follow the (Step 1) - (Step 3) of item 7.1. / / / / / /...
  • Page 17 International Sales International Sales Office Stanley-Proto Industrial Tools / 14117 Industrial Park Blvd., NE Covington, GA 30014 / Phone : 770-787-3800 ARGENTINA Stanley Latin America, Argentina / Avenida Meipu 1413 (Primar...
  • Page 18 Piso) Buenos Aires, ARGENTINA / Phone : 54-11-4718-1334 AUSTRALIA Stanley Works Pty. Ltd. / 58 Dougharty Road P. O. Box 5027 Heidelberg West D. C. Victoria 3081, AUSTRALIA / Phone : 61-3-9459 -1144 BELGIUM Stanley Works Europe / Belgicastraat 11 BE-1930 Zaventem, BELGIUM / Phone : 32-2-716-2313 BRAZIL Ferramentas Stanley Ltda.
  • Page 19 Puebla 72030 Puebla, Pue, MEXICO / Phone : 52-22-242-424 NEW ZEALAND Stanley Tools (N.Z.) Ltd. / 262 Church Street Onahunga, Auckland, NEW ZEALAND / Phone : 64-9-634-2102 POLAND Stanley Poland / UI. Wloska 2 00-777 Warsaw, POLAND / Phone : 48- 22-841-9758 SINGAPORE Stanley Works Asia Pacific Ptd.
  • Page 20 8. Type Illustration of ICs, Transistors and Diodes 9. Schematic Diagram 9.1. Schematic Diagram Notes - This schematic diagram may be modified at any time with the development of new technology. Notes: - S950 : Power switch (POWER) - S951 : Speaker select switch (SPEAKERS A) - S952 : Digital signal processor on/defeat select switch / (-DSP ON/ DEFEAT) - S953 : Subwoofer low pass filter switch / (SUBWOOFER LOW...

  • Page 21: Printed Circuit Board Diagram

    of the DC circuit tester. / No mark : Power ON - Important safety notice : / Components identified by mark have special characteristics important 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 use only manufacturers specified parts shown in the parts list.
  • Page 22 11. Block Diagram 12. Wiring Connection Diagram 13. Terminal Functions of ICs 13.1. IC901 (M38B57M6141F) System Microprocessor Pin / Mark I/O / Function Division 1-2 KEY2-KEY1 Key input 1-2 THERM/ Thermal/Over load input OVLD KEY4 Key input 4 Over load input 2 OVERLOAD2 FMST Stereo signal detect...
  • Page 23 Pin / Mark I/O / Function Division 21 SEL1 Selector encoder for input 1 22 HOLD Blackout detection terminal 23 SEL2 Selector encoder for input 2 24 D.PASS DSP signal selector 25 RLY Relay control output 26 LOUDNESS Loudness control output / (Not used, open) Not used.

  • Page 24: Replacement Parts List

    Pin / Mark I/O / Function Division 71 COM DO Common digital output signal 72 COM DI Common digital input signal 73 AVSS GND for A-D converter 74 VREF Reference voltage for A- D / converter 75 SD SD signal detect input 76 COM REQS Common serial request output...
  • Page 25 Ref. No. Part No. Part Name & Description Pcs. Remarks CABINET AND CHASSIS RKM0375-1K TOP CABINET 1 [M]P-K PPK RKM0375-S TOP CABINET 1 [M]PPS RGR0284G-A REAR PANEL 1 [M] RGW0278-1K VOLUME KNOB 1 [M]P-K PPK RGW0278-S VOLUME KNOB 1 [M]PPS RKA0079-A LEG UNIT 4 [M]...
  • Page 26 Ref. No. Part No. Part Name & Description Pcs. Remarks XYN26+C6 SCREW 2 [M] XTB3+6G SCREW (FOOT) 1 [M] XYN3+F8 SCREW 1 [M] SHRD163 CORD HOLDER 2 [M] SHR9112 PLASTIC RIVET 2 [M] RSC0528 SHIELD CASE 1 [M] RSC0529 SHIELD PLATE 1 [M] RMA1232 PCB ANGLE...
  • Page 27 Ref. No. Part No. Part Name & Description Pcs. Remarks Q351 2SD592AQSTA TRANSISTOR Q352 2SB621AQSTA TRANSISTOR Q505 2SD1915FTA TRANSISTOR 1 [M] Q506 2SD1915FTA TRANSISTOR 1 [M] Q551 2SD1915FTA TRANSISTOR 1 [M] Q552 2SD1915FTA TRANSISTOR 1 [M] Q553 2SD1915FTA TRANSISTOR 1 [M] Q554 2SD1915FTA TRANSISTOR...
  • Page 28 Ref. No. Part No. Part Name & Description Pcs. Remarks D351 MTZJ5R6BTA DIODE 1 [M] D352 MTZJ5R6BTA DIODE 1 [M] D353 RVD1SS133TA DIODE 1 [M] D354 RVD1SS133TA DIODE 1 [M] D401 MTZJ7R5CTA DIODE D501 RVD1SS133TA DIODE 1 [M] D502 RVD1SS133TA DIODE 1 [M] D601...
  • Page 29 Ref. No. Part No. Part Name & Description Pcs. Remarks D743 1SR35400V DIODE D744 1SR35400V DIODE D751 1SR35400V DIODE D752 1SR35400V DIODE D753 1SR35400V DIODE D754 1SR35400V DIODE D755 RVD1SS133TA DIODE 1 [M] D756 MTZJ6R8BTA DIODE D768 MTZJ3R3ATA DIODE 1 [M] D769 RVD1SS133TA DIODE...
  • Page 30 Ref. No. Part No. Part Name & Description Pcs. Remarks SWITCHES S950 EVQ21405R SW POWER 1 [M] S951 EVQ21405R SW SPEAKER A 1 [M] S952 EVQ21405R 1 [M] S953 EVQ21405R SW SUB WOOFER 1 [M] S954 EVQ21405R SW DISPLAY 1 [M] S955 EVQ21405R SW DOWN...
  • Page 31 Ref. No. Part No. Part Name & Description Pcs. Remarks CP1202 RJT100W07 7P CONNECTOR 1 [M] CP1203 RJT100W07 7P CONNECTOR 1 [M] CP1204 RJT100W07 7P CONNECTOR 1 [M] COILS & TRANSFORMERS L501 RLQZP1R0KT-Y AXIAL COIL 1 [M] L502 RLQZP1R0KT-Y AXIAL COIL 1 [M] L602 RLQYR73MW-E...
  • Page 32 Ref. No. Part No. Part Name & Description Pcs. Remarks RL751 RSY0054-C RELAY OSCILLATORS X1001 RSXB12M2S01T CYRSTAL 1 [M] DISPLAY TUBE FL901 RSL0279-F FL DISPLAY 1 [M] FUSES XBA1C80NBAL FUSE XBA1C80NBAL FUSE XBA1C80NBAL FUSE XBA1C16NBAU FUSE FUSE HOLDERS FC701 EYF52BC FUSE HOLDER 1 [M] FC702...
  • Page 33 WIRES...
  • Page 34 Ref. No. Part No. Part Name & Description Pcs. Remarks REE0901 WIRE 1 [M] REE0907 WIRE 1 [M] REE0923 WIRE 1 [M] W354 RWJ1811170SS 11P WIRE 1 [M] W701 RWJ1812250SS WIRE 1 [M] W702 RWJ1803430SQ 3P WIRE 1 [M] W752 RWJ1803290SQ 3P WIRE 1 [M]...
  • Page 35 Ref. No. Part No. Part Name & Description Pcs. Remarks R409 ERDS2TJ102T 1K 1/4W 1 [M] R410 ERDS2TJ102T 1K 1/4W 1 [M] R411 ERDS2TJ102T 1K 1/4W 1 [M] R412 ERDS2TJ102T 1K 1/4W 1 [M] R413 ERDS2TJ102T 1K 1/4W 1 [M] R414 ERDS2TJ102T 1K 1/4W...
  • Page 36 Ref. No. Part No. Part Name & Description Pcs. Remarks R489 ERDS2TJ102T 1K 1/4W 1 [M] R490 ERDS2TJ102T 1K 1/4W 1 [M] R491 ERDS2TJ102T 1K 1/4W 1 [M] R501 ERDS2TJ222T 2.2K 1/4W 1 [M] R502 ERDS2TJ222T 2.2K 1/4W 1 [M] R503 ERDS2TJ103T 10K 1/4W...
  • Page 37 R578 ERDS2TJ473T 47K 1/4W 1 [M]...
  • Page 38 Ref. No. Part No. Part Name & Description Pcs. Remarks R579 ERDS2TJ222T 2.2K 1/4W 1 [M] R580 ERDS2TJ222T 2.2K 1/4W 1 [M] R581 ERDS2TJ183T 18K 1/4W 1 [M] R582 ERDS2TJ183T 18K 1/4W 1 [M] R583 ERDS2TJ102T 1K 1/4W 1 [M] R584 ERDS2TJ272T 2.7K 1/4W...
  • Page 39 R637 ERDS2TJ154T 150K 1/4W 1 [M]...
  • Page 40 Ref. No. Part No. Part Name & Description Pcs. Remarks R638 ERDS2TJ154T 150K 1/4W 1 [M] R639 ERDS2TJ104T 100K 1/4W 1 [M] R640 ERDS2TJ681T 680 1/4W 1 [M] R642 ERDS2TJ821T 820 1/4W 1 [M] R643 ERDS2TJ563T 56K 1/4W 1 [M] R644 ERDS1FVJ100T 10 1/2W...
  • Page 41 Ref. No. Part No. Part Name & Description Pcs. Remarks R712 ERDS2TJ682T 6.8K 1/4W 1 [M] R713 ERDS2TJ390T 39 1/4W 1 [M] R714 ERDS2TJ390T 39 1/4W 1 [M] R720 ERDS2TJ103T 10K 1/4W 1 [M] R721 ERDS1FVJ561T 560 1/2W R722 ERDS2TJ123T 12K 1/4W 1 [M] R723...
  • Page 42 Ref. No. Part No. Part Name & Description Pcs. Remarks R909 ERDS2TJ104T 100K 1/4W 1 [M] R910 ERDS2TJ102T 1K 1/4W 1 [M] R911 ERDS2TJ104T 100K 1/4W 1 [M] R914 ERDS2TJ223T 22K 1/4W 1 [M] R915 ERDS2TJ222T 2.2K 1/4W 1 [M] R916 ERDS2TJ223T 22K 1/4W...
  • Page 43 Ref. No. Part No. Part Name & Description Pcs. Remarks R1013 ERJ3GEYJ103Z 10K 1/16W 1 [M] R1014 ERJ3GEYJ103Z 10K 1/16W 1 [M] R1015 ERJ3GEYJ103Z 10K 1/16W 1 [M] R1016 ERJ3GEYJ103Z 10K 1/16W 1 [M] R1017 ERJ3GEYJ103Z 10K 1/16W 1 [M] R1018 ERJ3GEYJ103Z 10K 1/16W...
  • Page 44 Ref. No. Part No. Part Name & Description Pcs. Remarks R1067 ERJ3GEYJ331V 330 1/16W 1 [M] R1068 ERJ3GEYJ473V 47K 1/16W 1 [M] R1069 ERJ3GEYJ100V 10 1/16W 1 [M] R1201 ERDS2TJ333T 33K 1/4W 1 [M] R1202 ERDS2TJ333T 33K 1/4W 1 [M] R1203 ERDS2TJ102T 1K 1/4W...
  • Page 45 Ref. No. Part No. Part Name & Description Pcs. Remarks R1267 ERDS2TJ103T 10K 1/4W 1 [M] R1268 ERDS2TJ103T 10K 1/4W 1 [M] R1269 ERDS2TJ103T 10K 1/4W 1 [M] R1270 ERDS2TJ103T 10K 1/4W 1 [M] R1271 ERDS2TJ103T 10K 1/4W 1 [M] R1272 ERDS2TJ103T 10K 1/4W...
  • Page 46 Ref. No. Part No. Part Name & Description Pcs. Remarks R1905 ERDS2TJ271T 270 1/4W 1 [M] R1906 ERDS2TJ101T 100 1/4W 1 [M] R1907 ERDS2TJ101T 100 1/4W 1 [M] R1909 ERDS2TJ102T 1K 1/4W 1 [M] R1910 ERDS2TJ102T 1K 1/4W 1 [M] R1911 ERDS2TJ102T 1K 1/4W...
  • Page 47 Ref. No. Part No. Part Name & Description Pcs. Remarks C401 ECA1HAK4R7XB 4.7 50V 1 [M] C402 ECA1HAK4R7XB 4.7 50V 1 [M] C403 ECBT1H103KB5 0.01 50V 1 [M] C404 ECBT1H103KB5 0.01 50V 1 [M] C405 ECBT1H101KB5 100P 50V 1 [M] C406 ECBT1H101KB5 100P 50V...
  • Page 48 Ref. No. Part No. Part Name & Description Pcs. Remarks C490 ECBT1H101KB5 100P 50V 1 [M] C491 ECBT1H101KB5 100P 50V 1 [M] C492 ECBT1H101KB5 100P 50V 1 [M] C493 ECBT1H103KB5 0.01 50V 1 [M] C494 ECBT1H103KB5 0.01 50V 1 [M] C499 ECBT1H103KB5 0.01 50V...
  • Page 49 Ref. No. Part No. Part Name & Description Pcs. Remarks C582 ECBT1H121KB5 120P 50V 1 [M] C585 ECA1CAK330XB 33 16V 1 [M] C586 ECA1CAK100XB 10 16V 1 [M] C591 ECBT1H103KB5 0.01 50V 1 [M] C592 ECBT1H103KB5 0.01 50V 1 [M] C601 ECA1JAM330XB 33 63V...
  • Page 50 Ref. No. Part No. Part Name & Description Pcs. Remarks C705 EC0S1VP562BB 5600 35V 1 [M]! C706 EC0S1VP562BB 5600 35V 1 [M]! C707 ECA1VAM101XB 100 35V 1 [M] C708 ECKR1H103ZF5 0.01 50V 1 [M] C709 ECA1CAK330XB 33 16V 1 [M] C710 ECBT1H103KB5 0.01 50V...
  • Page 51 Ref. No. Part No. Part Name & Description Pcs. Remarks C923 ECBT1H331KB5 330P 50V 1 [M] C924 ECBT1H331KB5 330P 50V 1 [M] C925 ECBT1H331KB5 330P 50V 1 [M] C926 ECBT1H331KB5 330P 50V 1 [M] C927 ECBT1H331KB5 330P 50V 1 [M] C928 ECBT1H331KB5 330P 50V...
  • Page 52 Ref. No. Part No. Part Name & Description Pcs. Remarks C1050 ECUV1H102KBV 1000P 50V 1 [M] C1051 ECUV1H152KBV 1500P 50V 1 [M] C1052 ECUV1E103KBV 0.01 25V 1 [M] C1053 ECUVNC104ZFV 0.1 16V 1 [M] C1201 ECBT1C332KR5 3300P 16V 1 [M] C1202 ECBT1C332KR5 3300P 16V...
  • Page 53 Ref. No. Part No. Part Name & Description Pcs. Remarks C1264 ECBT1H391KB5 390P 50V 1 [M] C1265 ECBT1H151KB5 150P 50V 1 [M] C1266 ECBT1H151KB5 150P 50V 1 [M] C1267 ECEA1CKN100B 10 16V 1 [M] C1268 ECEA1CKN100B 10 16V 1 [M] C1269 ECEA1CKN100B 10 16V...

  • Page 54: Cabinet Parts Location

    Ref. No. Part No. Part Name & Description Pcs. Remarks C1904 ECA1HAK010XB 1 50V 1 [M] C1905 ECBT1H103KB5 0.01 50V 1 [M] C1906 ECBT1H103KB5 0.01 50V 1 [M] C1907 ECBT1H103KB5 0.01 50V 1 [M] C1908 ECA1HAK010XB 1 50V 1 [M] C1909 ECBT1C472MR5 4700P 16V...
  • Page 55 16. Packaging...
  • Page 57 DTS P.C.B. (SIDE : A) C1027 C1040 X1001 C1003 IC1006 C1026 C1036 C1024 R1024 C1009 IC1003 C1032 IC1005 R1023 C1034 C1039 C1005 IC1001 C1025 IC1004 Q1001 C1042 8 10 R1025 C1043 29 30 R1028 C1030 C1031 C1029 C1008 IC1002 C1047 C1004 L1001 C1048...
  • Page 58 HEADPHONES JACK P.C.B. HP601 1 2 3 4 CN501 (REP2931B-S) PHONES ELECTRICAL PARTS LOCATION Ref. No. Ref. No. Ref. No. Ref. No. Lo. No. Lo. No. Lo. No. Lo. No. DTS P.C.B. AC IN/OUT IC1001 R1026 R1054 C1027 P.C.B. IC1002 R1027 R1055 C1029...
  • Page 59 SURROUND P.C.B. DIGITAL (OPTICAL) JK1303 JK1302 JK1301 E1301 JK403 C1320 C1309 C1306 C1303 L1303 C1307 C1302 C1305 C1235 C1237 C1226 C442 C441 C1224 C444 C1241 CN1201 C1225 IC1204 C1243 C443 C1223 W1205 C1231 C1239 C1215 C1244 IC404 C1245 C1232 C1227 C1228 C481 C482...
  • Page 60 OPERATION P.C.B. S957 S952 D939 W354 (-DSP ON/DEFEAT) (PRESET) (SFC) 1 2 3 4 5 6 7 8 9 10 11 D940 (SURROUND) (DSP) S956 S953 (TUNING (LPF) D941 (STEREO) (SUB WOOFER) VR902 (DSP) S955 S954 (TUNING (LEVEL) S967 (SPEAKERS B) S969 ( HELP/ S950...
  • Page 61 FL P.C.B. L502 L501 S958 (DIGITAL INPUT) R998 IC501 R997 VR501(VOLUME) R931 R932 R933 D942 IC903 (DIGITAL INPUT) 16 15 14 13 12 11 10 9 D932(TUNER) D931(PHONO) R916 VR901 (INPUT SELECTOR) R991 Q505 R504 R503 S960 (TAPE.MON) 5 6 7 8 R915 Q902 IC511...
  • Page 62 R937 R936 R931 R933 R934 R932 R935 VR903 D931(PHONO) D932(TUNER) D933(CD) D934(DVD) D936(VCR) D935(TV) D937 (SFC/MODE) (TAPE/MONITOR) CF901 R904 R909 R991 R995 R996 R943 IC901 R910 C993 1 2 3 CN354 Q902 R944 D924 R945 Z891 C994 (SENSOR) Q901 C908 R906 R994 R921...
  • Page 63 MAIN P.C.B. CENTER PHONO WOOFER JK603 JK401 C406 E401 CP401 RL603 C662 C451 C452 CP1201 C456 C455 C458 C457 CP101 C661 C694 CP402 IC451 C660 C659 L653 D665 D663 C462 C461 C651 CP1202 D661 L652 D666 D662 C460 C459 IC651 D664 CP403 C464...
  • Page 64 FRONT CENTER SURROUND WOOFER RL601 RL602 JK602 JK603 JK601 L603 RL604 D612 D611 Q603 D613 B Q601 C626 CP711 Q602 L603 C611 C625 D665 D663 C646 D661 C612 L602 D662 IC601 IC651 D664 C644 L604 C615 C617 C616 C619 C622 C621 Q723 Q724...
  • Page 65 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. MAIN P.C.B. IC451 D724 R545 R647 R777 C616 IC601 D725 C617 R550 R653 R778 IC602 D726...

  • Page 66: Power Supply Pcb

    ELECTRICAL PARTS LOCATION Ref. No. Lo. No. Ref. No. Lo. No. POWER SUPPLY P.C.B Q751 CN752 POWER TRANSFORMER P.C.B. Q752 FC701 Q753 FC702 D751 D752 F3 8A D753 W702 D754 R751 D741 D755 R799 D756 C751 FC706 FC705 D742 T751 C752 Z751 C753...

  • Page 67: Schematic Diagram

    SCHEMATIC DIAGRAM-1 NOTE: The number which noted at the connectors on the schematic diagram as "SCHEMATIC DIAGRAM-1" or "SCHEMATIC DIAGRAM-2" indicates the schematic diagram serial number located on the left corner in the schematic diagram. :POSITIVE VOLTAGE LINE :FM/ AM SIGNAL LINE IN/OUT TERMINAL CIRCUIT :NEGATIVE VOLTAGE LINE :SUB WOOFER SIGNAL LINE...
  • Page 68 SCHEMATIC DIAGRAM-2 :POSITIVE VOLTAGE LINE :NEGATIVE VOLTAGE LINE :FM/ AM SIGNAL LINE :SUB WOOFER SIGNAL LINE IC401 TC9163AN SIGNAL SELECTOR R423 (AUDIO) 14.1V DATA -16.2V 0V R424 14.4V IC402 NJM4580DD R415 C417 BUFFER AMP 16V10 14.4V CN401 DVD L DVD R MAIN A.GND CIRCUIT(CP401)
  • Page 69 SCHEMATIC DIAGRAM-3 :POSITIVE VOLTAGE LINE :FM/ AM SIGNAL LINE :SURROUND SP SIGNAL LINE SURROUND CIRCUIT :NEGATIVE VOLTAGE LINE :CENTER SP SIGNAL LINE :SUB WOOFER SIGNAL LINE R404 JK403 R ch R439 R403 L ch IC404 TC9162AN SIGNAL SELECTOR (AUDIO) R438 14.2V -16.2V C1301...
  • Page 70 SCHEMATIC DIAGRAM-4 :POSITIVE VOLTAGE LINE :FM/ AM SIGNAL LINE :SURROUND SP SIGNAL LINE :NEGATIVE VOLTAGE LINE :CENTER SP SIGNAL LINE :SUB WOOFER SIGNAL LINE 9.2V 4.9V C980 C488 50V4.7 50V4.7 R491 9.2V 4.5V 4.6V 4.5V 4.6V 4.9V IC405 M62490FPE1 SOUND CONTROLLER (VOLUME CONT.) R489 4.6V...
  • Page 71 SCHEMATIC DIAGRAM-5 :POSITIVE VOLTAGE LINE :FM/ AM SIGNAL LINE :SURROUND SP SIGNAL LINE SURROUND CIRCUIT :NEGATIVE VOLTAGE LINE :CENTER SP SIGNAL LINE :SUB WOOFER SIGNAL LINE R1929 R1930 65 CS42 R1935 4.9V S CLK R1936 S OUT R1937 S IN R1934 CS49 R1931...
  • Page 72 SCHEMATIC DIAGRAM-6 DTS CIRCUIT :POSITIVE VOLTAGE LINE 2.6V SCCLK AU DATA2 R1019 2.6V 2.6V R1027 4.7K DATA7 DB CLK R1018 2.6V 2.6V R1029 4.7K DATA6 DB DA R1017 2.6V 2.6V DATA5 RESET R1016 2.6V IC1001 DATA4 VssA 2.6V 2.6V CS49326-CLR 2.6V 2.6V 2.6V...
  • Page 73 SCHEMATIC DIAGRAM-7 :FM/ AM SIGNAL LINE :SURROUND SP SIGNAL LINE :POSITIVE VOLTAGE LINE :CENTER SP SIGNAL LINE :SUB WOOFER SIGNAL LINE 4.9V C1042 R1055 1000P R1056 R1042 R1057 R1058 R1059 R1060 2.4V D IN1 A OUT2 2.4V D OUT2 A OUT1 1.6V R1061 D OUT1...
  • Page 74 SCHEMATIC DIAGRAM-8 FL CIRCUIT :POSITIVE VOLTAGE LINE :NEGATIVE VOLTAGE LINE :FM/AM SIGNAL LINE 5.5V -16.2V 14.4V CP905 L DIN A .GND MAIN L IN CIRCUIT(CN905) R IN on SCHEMATIC R DIN DIAGRAM-13 +B(8) R OUT L OUT D931-937 SLR325VCT31 CP904 V.RF MAIN 5.3V...
  • Page 75 SCHEMATIC DIAGRAM-9 :POSITIVE VOLTAGE LINE :NEGATIVE VOLTAGE LINE 5.5V -14.9V 14.1V FL901(RSL0279-F) FL DISPLAY 54 53 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5...

  • Page 76: Operation Circuit

    SCHEMATIC DIAGRAM-10 FL CIRCUIT :POSITIVE VOLTAGE LINE :NEGATIVE VOLTAGE LINE :FM/AM SIGNAL LINE 5.5V -16.2V 14.4V C520 50V4.7 R523 C525 C523 C522 R518 R516 3.9K 0.068 0.012 50V4.7 1.8K 470K R521 C518 C516 C512 R512 220P 50V3.3 VR511 14.4V R524 R522 100K(C) 3.9K...
  • Page 77 SCHEMATIC DIAGRAM-11 :POSITIVE VOLTAGE LINE :NEGATIVE VOLTAGE LINE :FM/AM SIGNAL LINE HEADPHONES JACK CIRCUIT -16.2V CP501 CN501 HP601 IC501 PHONES BA6218 MOTOR DRIVE DIRECTION DRIVE SELECT 5.5V R508 L502 5.5V L501 IC551 TC9214AP R506 2.2K SIGNAL SELECTOR R553 100K 14.4V -16.2V R505 2.2K...
  • Page 78 SCHEMATIC DIAGRAM-12 :POSITIVE VOLTAGE LINE :FM/ AM SIGNAL LINE :SURROUND SP SIGNAL LINE MAIN CIRCUIT :NEGATIVE VOLTAGE LINE :CENTER SP SIGNAL LINE :SUB WOOFER SIGNAL LINE R463 R461 180K C537 R579 16V33 2.2K C461 C459 C457 R457 R459 C463 R535 C579 6800P 0.022...
  • Page 79 SCHEMATIC DIAGRAM-13 :POSITIVE VOLTAGE LINE :FM/ AM SIGNAL LINE :NEGATIVE VOLTAGE LINE :CENTER SP SIGNAL LINE :SUB WOOFER SIGNAL LINE -16.2V Q604 RVTDTA114EST Q651,652 LIMITER R640 R615 RVTDTA143XST RELAY DRIVE CONTROL Q601-603 4.5V RVTDTA143XST Q651 Q652 RELAY DRIVE Q605 RVTDTA114EST Q603 Q602 Q601...
  • Page 80 SCHEMATIC DIAGRAM-14 :POSITIVE VOLTAGE LINE :FM/ AM SIGNAL LINE MAIN CIRCUIT :NEGATIVE VOLTAGE LINE :CENTER SP SIGNAL LINE IC601 RSN310R36-P POWER AMP -52.4V 52.5V -26.2V -8.4V -16.4V 14V -1.5V -12.3V -31.2V 31.1V -66.7V 66.8V C642 820P C646 C603 C604 820P 820P C601 R603...
  • Page 81 SCHEMATIC DIAGRAM-15 :POSITIVE VOLTAGE LINE :FM/ AM SIGNAL LINE :SUB WOOFER SIGNAL LINE :NEGATIVE VOLTAGE LINE :CENTER SP SIGNAL LINE :SURROUND SP SIGNAL LINE IC651 RSN310R36-P POWER AMP -52.4V 52.5V -26.2V -8.4V -16.4V 14V -1.5V -12.3V -31.2V 31.1V 0V -66.7V 66.8V C692 820P C653...

  • Page 82: Power Supply Circuit

    SCHEMATIC DIAGRAM-16 :POSITIVE VOLTAGE LINE MAIN CIRCUIT :FM/ AM SIGNAL LINE :CENTER SP SIGNAL LINE SPEAKER :SURROUND SP SIGNAL LINE JK603 :SUB WOOFER SIGNAL LINE SURROUND SPEAKER Rch CENTER SPEAKER SUB WOOFER SPEAKER JK602 FRONT SPEAKERS(A) JK601 FRONT SPEAKER(B) SURROUND SPEAKER Lch POWER SUPPLY CIRCUIT C690 C701...
  • Page 83 SCHEMATIC DIAGRAM-17 :FM SIGNAL LINE :AM SIGNAL LINE Z120 TUNER UNIT(RAN0001MM) :POSITIVE VOLTAGE LINE :FM OSC SIGNAL LINE :AM OSC SIGNAL LINE 2SC2059 FM MIXER IFT1 2SK360 0 - 220 JK101 RF AMP FM ANT 2SC2413 BUFFER AMP AM ANT AM ANT AM OSC 0.47...
  • Page 84 SCHEMATIC DIAGRAM-18 :POSITIVE VOLTAGE LINE :FM SIGNAL LINE :AM SIGNAL LINE :AM OSC SIGNAL LINE :FM/ AM SIGNAL LINE 470K 100P 470K 1000P DTA114 2SC2413 2SC2413 POWER SUPPLY (FM:ON) FM IF AMP FM IF AMP 14.8V 3.3K 2SC2712 BUFFER AMP LA1844 FM/AM IF AMP, DET/AM OSC,MIX/FM MPX...
  • Page 85 CS49326-CLR SNAHC1U04DBV CS4226-KQG M38B57MCA232 36PIN M62490FPE1 M38B57M6141F 20PIN SN7AHCT244PW 14PIN SN74HCU04APW ... 20PIN SN74LV244APW ..No.1 ..44 1 ..
  • Page 86 SPEAKERS TERMINAL P.C.B. CENTER POWER SUPPLY FRONT SURROUND P.C.B. WOOFER POWER TRANSFORMER CN752 P.C.B. W702 CP771 FAN MOTOR T751 (POWER TRANS- T701 FORMER) (POWER CN751 W701 TRANSFORMER) W701 BLACK WHITE MAIN P.C.B. BLUE AC IN/OUT P.C.B. W752 CN901 CN902 CN903 .
  • Page 87 PHONO CP401 Z120 TUNER CP1201 UNIT CP101 CP402 CP1202 CP403 CP1203 CP1204 DIGITAL SURROUND P.C.B. CN1201 W1205 CN1202 CN904 CN905 ... . CN1002B CN1203 CN1001B DVD/ TV MONITOR OUT CD/TAPE TV/VCR SUBWOOFER OUT CN1204...
  • Page 88 Z120 TUNER UNIT (RAN0001MM) BUFFER FM ANT AM ANT +B(FM) RF AMP MIXER COIL COIL +B(FM) BUFFER FM IF +B(FM) LOCAL BUFFER +B(FM) BUFFER LA1844 FM / AM I F AMP, DET / AM OSC, MIX / FM MPX DECODER BUFF.
  • Page 89 (26) TC9163AN AN6558F IC401 IC451 AUDIO SIGNAL SELECTOR (AUDIO) (27) PHONO EQ PHONO (25) (24) (23) TV IN NJM4580DD (22) IC402 (17) Buffer (21) amp. (20) (19) (OUT) TAPE (18) PLAY (IN) Level shift Latch circuit Shift register NJM2279D IC351 SIGNAL SELECTOR (VIDEO) GND2...
  • Page 90 (24) A OUT3(4) (OPTICAL) DIGITAL (OPTICAL) A OUT6 CS4226-KQG IC1002 DIR/DAC/VOL (OPTICAL) A OUT5 (13) AIN1L BUFFER (22) (AIN1R) A OUT1(2) NJM2115D AIN2L (12) IC1206 ( 1207 ) (AIN2R) 28 30 Q1001 POWER X1001 SUPPLY (12.288MHz) SNAHC1U04DBV SN74HCU04APW IC1006 IC1005 INVERTER LOGIC CONTROL SN74LV244APW...

  • Page 91: System Control

    TC9162AN (22) (23) IC404 NJM2060D SIGNAL SELECTOR IC1204 (1/2) (AUDIO) (24) BUFFER NJM4580DD NJM2060D X2-2 IC1203 (1/2) IC1201 (1/2) NJM4580DD X1-1 BUFFER IC1203 (1/2) BUFFER BUFFER X2-1 NJM2060D X1-2 IC1204 (1/2) BUFFER X6-1 X6-2 X6-2 (17) (18) SW CONT. NJM4580DD IC1205 BUFFER D1903...

  • Page 92: Sound Controller

    (28) (24) DT VR M62490FPE1 IC1208 (31) L ch IN SOUND CONTROLLER (Rch IN) CK VR (VOLUME CONT.) CLK1 (22) NJM4580DD IC1202 VREF Q1201,D1281 REGULATOR (28) (24) DT VR M62490FPE1 CK VR IC406 CLK1 SOUND CONTROLLER (VOLUME CONT.) RS IN RS OUT NJM4580DD IC407...
  • Page 93 TC9214AP VR501 (VOLUME) IC551 SIGNAL SELECTOR NJM4580DD IC511 Tone amp. VR511,512 Treble Bass VR502 (BALANCE) R ch R ch R ch BA6218 IC501 MOTOR DRIVE R ch R ch 2,5, Drive Direction select CF901 M38B57M6141F IC901 SYSTEM CONTROL / FL DRIVE Q901 Q902 POWER...

  • Page 94: Power Amp

    RSN310R36-P IC601 POWER AMP Reg. +B12 +B11 NJM2060D D601 (R4) (R5) IC602 +B11 (21) BUFFER Q505 (Q506) NJM2060D IC602 MUTING BUFFER Q553 MUTING REG. D602 AUDIO Q651,652 OVERDET RELAY RLY2 DRIVE DISP CONT. SUB WOOFER Q554 D617 D605 MUTING OVER- NJM2060D IC602 RSN310R36-P...
  • Page 95 R ch HEADPHONES Q1681 MUTING (Q1682) SPEAKER (R6) Q601 FRONT SPEAKER(A) SP A RELAY DRIVE RL601 Q602 FRONT SPEAKER(B) SP B RELAY DRIVE RL602 CENTER RL604 SPEAKER RLY2 SUB WOOFER SPEAKER (SR5) Q603 SURROUND SPEAKER S/C SP RELAY DRIVE Q772,773, 776~778, RL603 Q774,775...
  • Page 96 IN/OUT TERMINAL P.C.B. VIDEO AUDIO DVD/TV TV/VCR CD/TAPE MONITOR OUT TV/VCR SUB WOOFER OUT JK402 (DVD) JK351 (TV IN) (TV IN) (CD) (TV MONITOR OUT) (VCR OUT) (TAPE REC) (VCR OUT) (SW) (VCR IN) (VCR IN) (TAPE PLAY) Q352 C330 R303 Q351 R359...

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