Technics SA-DX940 Service Manual
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Technics SA-DX940 Service Manual

Technics SA-DX940 Service Manual

Av control stereo receiver
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ORDER No.MD0006099C3
AV Control Stereo Receiver
SA-DX940
Colours
(K) ................. Black Type
(S) ................. Silver Type
Areas
(GCS) ............. Asia, Latin America, Middle East and Africa
(GK) ............... China
(GN) ............... Oceania
SPECIFICATIONS
Specification
1

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Summary of Contents for Technics SA-DX940

  • Page 1 ORDER No.MD0006099C3 AV Control Stereo Receiver SA-DX940 Colours (K) ....Black Type (S) ....Silver Type Areas (GCS) ..... Asia, Latin America, Middle East and Africa (GK) ....China (GN) ....Oceania SPECIFICATIONS Specification...
  • Page 2 AMPLIFIER SECTION Power output (at 240V) DIN 1kHz (T.H.D. 1%) 2 x 100W (6 20Hz - 20kHz continuous power output both channels driven 2 x 80W (6 Total harmonic distortion rated power at 20Hz - 20kHz 0.05% (6 half power at 1kHz 0.03% (6 Power output at 1kHz each channel driven DIN 1kHz (T.H.D.

  • Page 3: Am Tuner Section

    S/N 26dB V/75 S/N 20dB V/75 IHF usable sensitivity (IHF ’58) V/75 IHF 46dB stereo quieting sensitivity V/75 Total harmonic distortion 0.2% MONO 0.3% STEREO 60dB (73dB, IHF) MONO 58db (67dB, IHF) STEREO Frequency response -1dB, -2dB 20Hz - 15kHz Alternate channel selectivity 65dB ±400kHz...

  • Page 4: Before Repair

    Power consumption 240W / (in standby condition: 2W) 430 x 158 x 324.5mm Dimension (W x H x D) 9.7kg Mass Notes : 1. Specifications are subject to change without notice. / Mass and dimensions are approximate. 2. Total harmonic distortion is measured by the digital spectrum / analyzer.

  • Page 5: Protection Circuitry

    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 50Hz in NO SIGNAL mode should be shown below with respect tosupply voltage 230/230-240V.
  • Page 6 1. Standby/on switch ( /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. 2. DSP mode selector (DPS) 3. SFC mode selector (SFC MODE) 4.
  • Page 7 11. Headphones jack (PHONES) 12. Standby indicator ( ) When the unit is connected to the AC mains supply, this indicator lights up in standby mode and goes out when the unit is turned on. 13. Wake indicator (WAKE) 14. Display section 15.
  • Page 8 4. Memory indicator ( ) 5. Wake indicator (WAKE) 6. Sleep indicator (SLEEP) 7. Signal format indicators ( PRO LOGIC, DIGITAL) 8. Front speaker indicator (-SPEAKERS- 9. Low impedance indicator (LOW IMP) 10. Display 11. Frequency unit indicator (kHz, MHz) 12.
  • Page 9 1. Standby/on button ( ) button ( ) button ( button ( ) 5. Top menu, disc/deck 1/2 select button / (TOP MENU, DISC/DECK 1/ 6. Display button (DISPLAY) 7. Surround mode select button (SURROUND) 8. Stereo mode select button (STEREO) 9.

  • 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/-/- - button ( 10/-/- -) 22.
  • 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. 6.2. 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. 6.3. 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 / / / / / / 6.4. 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 7. Type Illustration of ICs, Transistors and Diodes 8. Schematic Diagram 8.1. 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 : 6CH in switch (DVD 6CH) - S953 : Subwoofer switch (SUBWOOFER) - S954 : Digital signal processor on/defeat select switch / (-DSP ON/...

  • Page 21: Printed Circuit Board Diagram

    - 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 Mark I/O / Function / No. 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 terminal WAKW Wake up timer LED / (Not used, open) RDS DI Control of RDS IC / (Not used, open)
  • Page 23 / (Not used, open) Mark I/O / Function / No. Division Not used. 28 VEE Power supply for FL driver 29 S/C SP Surround/Center speaker / control output 30 SP B Speaker B control output 31 SP A Speaker A control output 32 AF MUTE Muting control output SEG16-...

  • Page 24: Replacement Parts List

    Mark I/O / Function / No. Division 77 HELP LED/ Help LED control output / RDS CE / (Not used, open) 78 COM REQM Common mechanical request / output 79 VIDEO B Video selector control output B 80 VIDEO A Video selector control output A 13.

  • Page 25: Top Cabinet

    Ref. No. Part No. Part Name & Description Pcs. Remarks CABINET AND CHASSIS RKM0375-K TOP CABINET 1 [M]GN, / GK,GCS / (K) RKM0375-S TOP CABINET 1 [M]GN, / GCS(S) RGR0284E-C REAR PANEL 1 [M]GN RGR0284E-D REAR PANEL 1 [M]GK RGR0284E-E REAR PANEL 1 [M]GCS RGW0278-K...

  • Page 26: Integrated Circuits

    SHIELD PLATE 1 [M] RMA1232 PCB ANGLE 1 [M] REE0785A FFC WIRE 1 [M] REE0786A FFC WIRE 1 [M] RGB0031-A TECHNICS BADGE 1 [M] RKW0533F-Q F/L WINDOW 1 [M] RMN0502 LED HOLDER 1 [M] XYN3+F8 SCREW 1 [M] RMR1165-K SPEAKER COVER...
  • Page 27 Ref. No. Part No. Part Name & Description Pcs. Remarks IC1201 NJM2060D IC OP AMP 1 [M] IC1202 NJM4580DD IC OP AMP 1 [M] IC1203 NJM4580DD IC OP AMP 1 [M] IC1204 NJM2060D IC OP AMP 1 [M] IC1205 NJM4580DD IC OP AMP 1 [M] IC1206...
  • Page 28 Ref. No. Part No. Part Name & Description Pcs. Remarks Q901 RVTDTC114YST TRANSISTOR 1 [M] Q902 2SA933SSTA TRANSISTOR 1 [M] Q937 RVTDTA114YST TRANSISTOR 1 [M] Q938 RVTDTC114YST TRANSISTOR 1 [M] Q1001 DTA114YETL TRANSISTOR 1 [M] Q1201 2SD2137PQTA TRANSISTOR Q1681 2SD1915FTA TRANSISTOR 1 [M] Q1682...
  • Page 29 Ref. No. Part No. Part Name & Description Pcs. Remarks D727 1N5402BM21 DIODE D728 1N5402BM21 DIODE D731 RVD1SS133TA DIODE 1 [M] D732 RVD1SS133TA DIODE 1 [M] D741 1SR35400V DIODE D742 1SR35400V DIODE D743 1SR35400V DIODE D744 1SR35400V DIODE D751 1SR35400V DIODE D752 1SR35400V...
  • Page 30 Ref. No. Part No. Part Name & Description Pcs. Remarks D1905 RVD1SS133TA DIODE 1 [M] VARIABLE RESISTORS VR501 EUWMRL026993 VR VOLUME 1 [M] VR502 EWC0YAF20G15 VR BALANCE CONTROL 1 [M] VR511 EWC1XA020C15 VR TONE CONTROL 1 [M] VR512 EWC1XA020C15 VR TONE CONTROL 1 [M] VR901 EVQVBHFK112B...
  • Page 31 Ref. No. Part No. Part Name & Description Pcs. Remarks CP101 RJT100W11 11P CONNECTOR 1 [M] CP401 RJT100W07 7P CONNECTOR 1 [M] CP402 RJT100W07 7P CONNECTOR 1 [M] CP403 RJT100W07 7P CONNECTOR 1 [M] CP501 RJT100W04 4P CONNECTOR 1 [M] CP771 SJT3213 CONNECTOR (FAN)
  • Page 33 Ref. No. Part No. Part Name & Description Pcs. Remarks CERAMIC FILTERS CF901 RVBCST4R00MT CERAMIC OSCILLATOR 1 [M] CF1901 RVBCST4R00MT CERAMIC OSCILLATOR 1 [M] RELAY RL601 RSY0013M-0 RELAY RL602 RSY0013M-0 RELAY RL603 RSY0013M-0 RELAY RL604 RSY0013M-0 RELAY RL751 RSY0040M-0 RELAY OSCILLATORS X1001 RSXB12M2S01T...
  • Page 34 Ref. No. Part No. Part Name & Description Pcs. Remarks JK351 RJH3601 JK 6P RCA 1 [M] JK401 SJF3068-7N JK RCA TERMINAL 1 [M] JK402 RJH3001 JK 12P RCA 1 [M] JK403 SJF3068-7N JK RCA TERMINAL 1 [M] JK404 SJF3069-17N JK RCA 1 [M] JK601...
  • Page 35 Ref. No. Part No. Part Name & Description Pcs. Remarks R301 ERDS2TJ750T 75 1/4W 1 [M] R302 ERDS2TJ750T 75 1/4W 1 [M] R303 ERDS2TJ750T 75 1/4W 1 [M] R359 ERDS2TJ750T 75 1/4W 1 [M] R362 ERDS2TJ750T 75 1/4W 1 [M] R367 ERDS2TJ102T 1K 1/4W...
  • Page 37 Ref. No. Part No. Part Name & Description Pcs. Remarks R444 ERDS2TJ103T 10K 1/4W 1 [M] R445 ERDS2TJ103T 10K 1/4W 1 [M] R446 ERDS2TJ103T 10K 1/4W 1 [M] R451 ERDS2TJ224T 220K 1/4W 1 [M] R452 ERDS2TJ224T 220K 1/4W 1 [M] R453 ERDS2TJ391T 390 1/4W...
  • Page 38 R522 ERDS2TJ223T 22K 1/4W 1 [M]...
  • Page 39 Ref. No. Part No. Part Name & Description Pcs. Remarks R523 ERDS2TJ392T 3.9K 1/4W 1 [M] R524 ERDS2TJ392T 3.9K 1/4W 1 [M] R525 ERDS2TJ222T 2.2K 1/4W 1 [M] R526 ERDS2TJ222T 2.2K 1/4W 1 [M] R527 ERDS2TJ821T 820 1/4W 1 [M] R528 ERDS2TJ821T 820 1/4W...
  • Page 40 Ref. No. Part No. Part Name & Description Pcs. Remarks R612 ERDS1FVJ100T 10 1/2W R613 ERDS2TJ152T 1.5K 1/4W 1 [M] R614 ERDS2TJ152T 1.5K 1/4W 1 [M] R615 ERDS2TJ681T 680 1/4W 1 [M] R616 ERD25FVJ820T 82 1/4W R617 ERD25FVJ820T 82 1/4W R618 ERD25FVJ820T 82 1/4W...
  • Page 41 Ref. No. Part No. Part Name & Description Pcs. Remarks R679 ERDS2TJ682T 6.8K 1/4W 1 [M] R681 ERDS2TJ184T 180K 1/4W 1 [M] R682 ERDS2TJ224T 220K 1/4W 1 [M] R683 ERDS2TJ473T 47K 1/4W 1 [M] R684 ERDS2TJ474T 470K 1/4W 1 [M] R685 ERDS2TJ154T 150K 1/4W...
  • Page 42 Ref. No. Part No. Part Name & Description Pcs. Remarks R793 ERDS2TJ123T 12K 1/4W 1 [M] R794 ERDS2TJ123T 12K 1/4W 1 [M] R795 ERDS2TJ223T 22K 1/4W 1 [M] R797 ERDS2TJ223T 22K 1/4W 1 [M] R798 ERDS2TJ223T 22K 1/4W 1 [M] R799 ERDS2TJ682T 6.8K 1/4W...
  • Page 43 Ref. No. Part No. Part Name & Description Pcs. Remarks R961 ERDS2TJ122T 1.2K 1/4W 1 [M] R962 ERDS2TJ152T 1.5K 1/4W 1 [M] R963 ERDS2TJ182T 1.8K 1/4W 1 [M] R964 ERDS2TJ222T 2.2K 1/4W 1 [M] R965 ERDS2TJ332T 3.3K 1/4W 1 [M] R966 ERDS2TJ472T 4.7K 1/4W...
  • Page 44 Ref. No. Part No. Part Name & Description Pcs. Remarks R1050 ERJ3GEYJ102Z 1K 1/16W 1 [M] R1051 ERJ3GEYJ102Z 1K 1/16W 1 [M] R1052 ERJ3GEYJ102Z 1K 1/16W 1 [M] R1053 ERJ3GEYJ102Z 1K 1/16W 1 [M] R1054 ERJ3GEYJ102Z 1K 1/16W 1 [M] R1055 ERJ3GEYJ102Z 1K 1/16W...
  • Page 45 Ref. No. Part No. Part Name & Description Pcs. Remarks R1242 ERDS2TJ333T 33K 1/4W 1 [M] R1247 ERDS2TJ102T 1K 1/4W 1 [M] R1248 ERDS2TJ471T 470 1/4W 1 [M] R1249 ERDS2TJ682T 6.8K 1/4W 1 [M] R1250 ERDS2TJ562T 5.6K 1/4W 1 [M] R1251 ERDS2TJ222T 2.2K 1/4W...
  • Page 46 Ref. No. Part No. Part Name & Description Pcs. Remarks R1695 ERDS2TJ102T 1K 1/4W 1 [M] R1696 ERDS2TJ102T 1K 1/4W 1 [M] R1699 ERDS2TJ332T 3.3K 1/4W 1 [M] R1701 ERDS1FVJ4R7T 4.7 1/2W R1702 ERDS1FVJ4R7T 4.7 1/2W R1707 ERDS2TJ821T 820 1/4W 1 [M] R1708 ERDS2TJ331T...
  • Page 47 Ref. No. Part No. Part Name & Description Pcs. Remarks R1946 ERDS2TJ102T 1K 1/4W 1 [M] CAPACITORS C308 ECA0JAK101XB 100 6.3V 1 [M] C309 ECA0JAK101XB 100 6.3V 1 [M] C329 ECBT1H470J5 47P 50V 1 [M] C330 ECBT1H470J5 47P 50V 1 [M] C351 ECA0JAK101XB 100 6.3V...
  • Page 48 Ref. No. Part No. Part Name & Description Pcs. Remarks C440 ECBT1H103KB5 0.01 50V 1 [M] C441 ECA1HAK4R7XB 4.7 50V 1 [M] C442 ECA1HAK4R7XB 4.7 50V 1 [M] C443 ECBT1H103KB5 0.01 50V 1 [M] C444 ECBT1H103KB5 0.01 50V 1 [M] C451 ECA1HAK4R7XB 4.7 50V...
  • Page 49 Ref. No. Part No. Part Name & Description Pcs. Remarks C518 ECBT1H330J5 33P 50V 1 [M] C519 ECA1HAK4R7XB 4.7 50V 1 [M] C520 ECA1HAK4R7XB 4.7 50V 1 [M] C521 ECA1HAK4R7XB 4.7 50V 1 [M] C522 ECA1HAK4R7XB 4.7 50V 1 [M] C523 ECFR1E123KR 0.012 25V...
  • Page 50 Ref. No. Part No. Part Name & Description Pcs. Remarks C621 ECA2AAM330XB 33 100V 1 [M] C622 ECA2AAM330XB 33 100V 1 [M] C625 ECEA1HN100SB 10 50V 1 [M] C626 ECEA1HN100SB 10 50V 1 [M] C631 ECKR1H223ZF5 0.022 50V 1 [M] C632 ECKR1H223ZF5 0.022 50V...
  • Page 51 C721 ECQE2104KF3 0.1 250V 1 [M]...
  • Page 52 Ref. No. Part No. Part Name & Description Pcs. Remarks C722 ECQE2104KF3 0.1 250V 1 [M] C741 ECQE2104KF3 0.1 250V 1 [M] C742 ECA1CAM222XE 2200 16V C751 ECKWRS102MBC 1000P 400V C752 ECKR1H103KB5 0.01 50V 1 [M] C753 ECA1EAM331XB 330 25V C754 ECBT1H103KB5 0.01 50V...
  • Page 53 Ref. No. Part No. Part Name & Description Pcs. Remarks C991 ECBT1H101KB5 100P 50V 1 [M] C992 ECBT1H101KB5 100P 50V 1 [M] C993 ECBT1H101KB5 100P 50V 1 [M] C994 ECBT1H101KB5 100P 50V 1 [M] C995 ECBT1H101KB5 100P 50V 1 [M] C996 ECBT1H101KB5 100P 50V...
  • Page 54 Ref. No. Part No. Part Name & Description Pcs. Remarks C1211 ECBT1H103KB5 0.01 50V 1 [M] C1212 ECBT1H103KB5 0.01 50V 1 [M] C1213 ECA1CAK100XB 10 16V 1 [M] C1214 ECA1CAK100XB 10 16V 1 [M] C1215 ECBT1H104KB5 0.1 50V 1 [M] C1216 ECA1CAK330XB 33 16V...
  • Page 55 Ref. No. Part No. Part Name & Description Pcs. Remarks C1281 ECA1HAK4R7XB 4.7 50V 1 [M] C1282 ECA1HAK4R7XB 4.7 50V 1 [M] C1283 ECA1HAK4R7XB 4.7 50V 1 [M] C1284 ECA1HAK4R7XB 4.7 50V 1 [M] C1285 ECA1CAK100XB 10 16V 1 [M] C1286 ECA1CAK100XB 10 16V...

  • Page 56: Cabinet Parts Location

    14. Cabinet Parts Location...
  • Page 57 15. Packaging...
  • Page 58 Printed in Japan (M000500000MT)

  • Page 59: 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 60 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 61 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 R403 R439 L ch IC404 R432 TC9162AN JK404 2.2K SR ch SIGNAL SELECTOR (AUDIO) R438...
  • Page 62 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 63 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 64 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 65 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 66 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 67 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 68: 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 69 SCHEMATIC DIAGRAM-11 :POSITIVE VOLTAGE LINE :NEGATIVE VOLTAGE LINE :FM/AM SIGNAL LINE HEADPHONES -16.2V JACK CIRCUIT 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 70 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 71 SCHEMATIC DIAGRAM-13 :POSITIVE VOLTAGE LINE :FM/ AM SIGNAL LINE :NEGATIVE VOLTAGE LINE :CENTER SP SIGNAL LINE -16.2V Q604 Q651,652 RVTDTA114EST RVTDTA143XST LIMITER R640 R615 RELAY DRIVE CONTROL Q601-603 4.5V RVTDTA143XST Q651 Q652 RELAY DRIVE Q605 RVTDTA114EST Q603 Q602 Q601 SWITCHING R698 R613 2.2K...
  • Page 72 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 73 SCHEMATIC DIAGRAM-15 :POSITIVE VOLTAGE LINE :FM/ AM SIGNAL LINE :NEGATIVE VOLTAGE LINE :CENTER SP SIGNAL LINE :SURROUND SP SIGNAL LINE IC651 RSN313H25-P POWER AMP -60.8V 64.3V -9.4V -11.5V 15V -11.4V 0V -12.3V -31.2V 31.1V 0V -66.7V 66.8V C651 R653 63V33 C658 C653 820P...

  • Page 74: 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 SURROUND SPEAKERS JK601 FRONT SPEAKER(B) SPEAKER TERMINAL CIRCUIT CENTER SPEAKER JK604 W601 CN601 FRONT SPEAKER(A) POWER SUPPLY CIRCUIT C691 C701 0.01 0.01...
  • Page 75 SCHEMATIC DIAGRAM-17 :FM SIGNAL LINE :AM SIGNAL LINE Z101 TUNER UNIT(RAN0002EM) :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 76 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 77 CS49326-CLR CS4226-KQG SNAHC1U04DBV M38B57M6153F 36PIN M62490FPE1 M38B57M6152F 20PIN SN7AHCT244PW SN74HCU04APW 14PIN ... 20PIN SN74LV244APW ... . No.1 44 1 ..
  • Page 78 FRONT(A) SPEAKERS TERMINAL P.C.B. CN601 POWER SUPPLY FRONT(B) CENTER SURROUND P.C.B. POWER TRANSFORMER CN752 P.C.B. 4 . . 1 W601 W702 CP771 FAN MOTOR T751 (POWER TRANS- T701 FORMER) (POWER CN751 W701 TRANSFORMER) W701 BLACK WHITE MAIN P.C.B. AC IN/OUT P.C.B. W752 CN901 CN902...
  • Page 79 PHONO CP401 Z101 TUNER CP1201 UNIT CP101 CP402 CP1202 CP403 CP1203 CP1204 DVD/DVD 6CH DIGITAL SURROUND P.C.B. CN1201 W1205 CN1202 CN904 CN905 ... . CN1002B CN1203 CN1001B DVD/ TV MONITOR OUT CD/TAPE TV/VCR SUBWOOFER OUT...
  • Page 80 Z101 TUNER UNIT BUFFER FM ANT AM ANT +B(FM) RF AMP MIXER COIL COIL +B(FM) BUFFER FM IF +B(FM) LOCAL BUFFER +B(FM) BUFFER DECODER BUFF. PHASE STEREO PILOT DET. CANCEL LEVEL AM/FM FM IF BUFFER COMP. CURVE FM IF PILOT Tuning Drive LA1844...
  • Page 81 (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 82: Logic Control

    (24) (OPTICAL) A OUT3(4) DIGITAL (OPTICAL) A OUT6 CS4226-KQG IC1002 DIR/DAC/VOL (OPTICAL) A OUT5 (13) AIN1L (22) BUFFER (AIN1R) A OUT1(2) NJM2115D (12) AIN2L IC1206 ( 1207 ) (AIN2R) 28 30 Q1001 POWER X1001 SUPPLY (12.288MHz) SNAHC1U04DBV SN74HCU04APW IC1006 IC1005 INVERTER LOGIC CONTROL SN74LV244APW...

  • Page 83: 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 84: 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 85: Motor Drive

    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 M38B57M6152F IC901 SYSTEM CONTROL / FL DRIVE Q901 Q902 POWER...

  • Page 86: Power Amp

    RSN310R36-P IC601 POWER AMP Reg. +B12 +B11 NJM2060D D601 (R4) (R5) IC602 +B11 (21) BUFFER Q505 NJM2060D (Q506) IC602 MUTING BUFFER Q553 MUTING REG. D602 AUDIO Q651,652 OVERDET RELAY DRIVE DISP CONT. SUB WOOFER Q554 D617 D605 MUTING RSN313H25-P D655 IC651 POWER AMP OVERDET...
  • Page 87 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 SPEAKER RL604 (SR5) Q603 SURROUND SPEAKER S/C SP RELAY DRIVE Q771~773, 776~779, RL603 780,781 Q774,775 OVER MOTOR DRIVE LOAD DET...

  • Page 88: Electrical Parts Location

    IN/OUT TERMINAL P.C.B. VIDEO AUDIO DVD/TV TV/VCR CD/TAPE MONITOR OUT TV/VCR SUB WOOFER OUT (DVD) JK351 (TV IN) JK402 (TV IN) (CD) (TV MONITOR OUT) (VCR OUT) (TAPE REC) (VCR OUT) (SW) (VCR IN) (VCR IN) (TAPE PLAY) Q352 C330 R303 Q351 R359...
  • Page 89 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 C1029 C1030 C1031 C1008 IC1002 C1047 C1004 L1001 C1048...
  • Page 90 SPEAKERS TERMINAL HEADPHONES JACK P.C.B. P.C.B. FRONT HP601 1 2 3 4 JK604 C631 C632 CN501 CN601 (REP2931D-S) PHONES REP2932E-P ..[GK] REP2932F-P ..[GN] REP2932G-P ..[GCS] ELECTRICAL PARTS LOCATION Ref. No. Lo. No. Ref. No. Lo. No. Ref. No. Lo.
  • Page 91 SURROUND P.C.B. DIGITAL (OPTICAL) DVD/DVD 6CH SUB WOOFER/ FRONT SURROUND CENTER JK1303 JK1302 JK1301 E1301 JK403 JK404 C1320 C1309 C1303 C1306 L1303 C1307 C1302 C1305 C1237 C1226 C1235 C442 C441 C1224 C444 C1241 CN1201 C1225 IC1204 C1243 C443 C1223 W1205 C1239 C1231 C1215...
  • Page 92 OPERATION P.C.B. S957 S952 D939 W354 (PRESET) (DVD 6CH) (SFC) 1 2 3 4 5 6 7 8 9 10 11 D940 (SURROUND) (DSP) S956 S953 (TUNING (SUBWOOFER) D941 (STEREO) VR902 (DSP) S955 S954 (TUNING (-DSP ON/DEFEAT) S967 (SPEAKERS B) S969 ( HELP/ S950...
  • Page 93 FL P.C.B. L502 L501 S958 (DIGITAL INPUT) R998 IC501 R997 R931 R932 R933 VR501(VOLUME) D942 IC903 (DIGITAL INPUT) 16 15 14 13 12 11 10 9 D931(PHONO) D932(TUNER) R916 VR901 (INPUT SELECTOR) R991 Q505 R504 R503 S960 (TAPE.MON) 5 6 7 8 R915 Q902 IC511...
  • Page 94 R937 R936 R931 R932 R933 R934 R935 VR903 D933(CD) D936(VCR) D931(PHONO) D932(TUNER) D934(DVD) D935(TV) D937 (SFC/MODE) (TAPE/MONITOR) CF901 R904 R909 R991 R995 R996 R943 IC901 R910 C993 Q938 1 2 3 CN354 Q902 R944 D924 C943 R945 Z891 C994 (SENSOR) Q901 C908 R906...
  • Page 95 MAIN P.C.B. SURROUND PHONO JK603 JK401 C406 C638 E401 C637 CP401 RL603 C452 C451 C661 C456 C455 CP1201 C457 C458 C663 C664 CP101 CP402 C662 IC451 Q652 L652 C462 C461 CP1202 C460 C459 Q651 CP403 C464 C463 L651 IC651 C652 CP1203 C671 Q781...
  • Page 96 FRONT SURROUND CENTER RL601 RL602 C640 JK603 JK601 C634 W601 1 2 3 4 C633 C638 C637 L603 RL604 D612 D611 Q603 B Q601 D613 C626 CP711 Q602 L603 C613 C625 C611 C614 C646 C612 L602 IC601 Q651 C645 C644 L604 IC651 C615...
  • Page 97 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 D732 R535 R642 R786 C626 IC601 D768 R536 R643 R791 C633 IC602 D769...

  • Page 98: 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 D753 F3 T6.3A W702 D754 R756 D755 C751 D741 D756 C752 FC706 FC705 D743 T751 C753 Z751 C754...

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