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Sanyo DC-DA370 manual

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Table of contents for the manual

  • Page 1

    FILE NO. Service Manual Micr o Component System DC-DA370 (UK) PRODUCT CODE No. 129 599 00 REFERENCE No. SM 5810201 This service manual consists of "DC-DA370U" (Main unit : 129 598 00) and "SX-DA370" (Speaker system : 165 027 00). Contents Specifications ................................................................... 1 System[...]

  • Page 2

    - 1 - SPECIFICATIONS General Output power ......................... 12.5 W x 2 (at 4 ohms, 10% distortion) Inputs ..................................... VIDEO IN : 400 mV / 50k ohms Outputs .................................. SPEAKERS : 4 ohms PHONES : 8 - 32 ohms OPTICAL OUT:Optical Power requirements ............... AC 230V, 50Hz Power consumption [...]

  • Page 3

    - 2 - LASER BEAM SAFETY PRECAUTION • Pick-up that emits a laser beam is used in this CD player section. CAUTION : USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE LASER OUTPUT .......... 0.6 mW Max. (CW) WAVELENGTH ............. 790 nm CAUTION – INVISIBLE LA[...]

  • Page 4

    - 3 - OPENING EXPANDED b a (2) Checking the "eye" pattern 1. Switch "ON" the POWER. 2. Connect an oscilloscope to TP1 (RF) and TP4 (VC). 3. Load the test disc. 4. Press the PLAY button. 5. Check to be sure that the "eye" pattern is at the center of waveform and that the diamond shape is clearly defined. 6. Press the ST[...]

  • Page 5

    - 4 - TUNER ADJUSTMENTS 1. FM Step Adjusting Connection S G Se t Adjustment Remark Circuit I nput Output F requency Position 1 98.0MHz.Input Level Alignment voltage IC231 Alignment voltage IC231 FM Antenna SG=66dB μ V 3-22pin(TP24,25) is 0.0 ± 0.05V 3-22pin is 0.0 ± 0.5V 2 Cover - - - C onnect Digital DC voltmeter to 87.5MHZ L o w - - - 1 . 4 ±[...]

  • Page 6

    - 5 - B A WHEN ASSEMBLING THE RACK GEAR AND CD LID When assembling the rack gear and CD lid, "A"part should be inserted into the "B" part. WHAT TO DO IF If the operation of the unit or display is not normal, even though the appropriate buttons have been pressed. Disconect the power cord from the AC outlet, then press "RESET[...]

  • Page 7

    - 6 - EXPLODED VIEW (CABINET & CHASSIS) 12 1 2 15 15 16 3 4 6 72 73 7 Y02 Y03 Y05 Y07 54 55 Y05 Y04 Y01 Y05 Y05 Y06 24 56 58 57 71 26 27 28 32 29 30 30 31 25 14 17 33 53 52 18 19 20 22 23 21 5 9 13 8 Y08 Y08 Y09 Y09 Y10 Y10 Y11 Y12 Y13 Y13 Y14 Y15 Y16 Y26 Y26 Y21 Y21 75 74 Y22 Y22 Y24 Y25 Y23 Y20 Y17 Y18 Y18 Y17 51 35 76 Y23 Y07 34 Y28 59 Y 27 [...]

  • Page 8

    - 7 - PARTS LIST PRODUCT SAFETY NOTICE EACH PRECAUTION IN THIS MANUAL SHOULD BE FOLLOWED DURING SERVICING. COMPONENTS IDENTIFIED WITH THE IEC SYMBOL ! ! ! IN THE PARTS LIST AND THE SCHEMATIC DIAGRAM DESIGNATED COMPONENTS IN WHICH SAFETY CAN BE OF SPECIAL SIGNIFICANCE. WHEN REPLACING A COMPONENT IDENTIFIED BY ! ! ! , USE ONLY THE REPLACEMENT PARTS D[...]

  • Page 9

    - 8 - PARTS LIST CD P.W.BOARD ASSY REF.NO. PART NO. DESCRIPTION 71 614 314 9606 ASSY,PWB CD (Only Initial) CN111 645 040 0513 SOCKET,FPC 15P or 645 026 2463 SOCKET,FFC 15P CN113 645 005 8127 PLUG,6P,BASEMECHA or 614 310 2472 PLUG,6P,BASEMECHA CN114 645 005 9292 PLUG,5P or 614 310 2465 PLUG,5P CN115 614 316 7990 ASSY,WIRE,WIRE D1211 407 099 4603 ZEN[...]

  • Page 10

    - 9 - PARTS LIST REF.NO. PART NO. DESCRIPTION S6218 614 240 1002 SWITCH,TACT or 645 006 5958 SWITCH,PUSH 1P-1T or 614 220 5471 SWITCH,TACT S6219 645 006 5958 SWITCH,PUSH 1P-1T or 614 240 1002 SWITCH,TACT or 614 220 5471 SWITCH,TACT S6220 645 006 5958 SWITCH,PUSH 1P-1T or 614 240 1002 SWITCH,TACT or 614 220 5471 SWITCH,TACT SE601 407 217 1101 PHOTO [...]

  • Page 11

    - 10 - PARTS LIST REF.NO. PART NO. DESCRIPTION or 405 000 0904 TR DTA114YS or 405 078 2404 TR BN1A4P Q2452 405 078 2404 TR BN1A4P or 405 000 0904 TR DTA114YS or 405 151 5209 TR KRA107M or 405 036 3702 TR 2SA1564 Q2453 405 036 3702 TR 2SA1564 or 405 151 5209 TR KRA107M or 405 000 0904 TR DTA114YS or 405 078 2404 TR BN1A4P Q4410 405 141 3406 TR KTA12[...]

  • Page 12

    - 11 - 1 3 2 5 4 6 7 ※ ※ ※ ※ ※ ※ ※ PARTS LIST(TAPE MECHANISM) TAPE MECHANISM REF.NO. PART NO. DESCRIPTION 614 315 4839 ASSY,MECHA,TM-DA370TN-SH 1 645 045 1799 R/P,E HEAD KC-9142EA-0321 2 645 010 9454 PINCH ROLLER(R) ASSY 3 645 010 9447 PINCH ROLLER(F) ASSY 4 645 045 1751 ASSY,MOTOR 5 645 045 1959 RF BELT 6 645 045[...]

  • Page 13

    - 12 - IC BLOCK DIAGRAM & DESCRIPTION 1 4 5 2 3 VCC HEAD SWITCH CTRL1 CTRL2 GND IC443 BA7755A (Head Switch) IC440 AN7348K ( Play/Rec Pre Amp) Nor/Cro & Hi/Lo Logic R R P R P P ALC Mute Mute Logic A/B Logic Rec/PB Ripple Rejection Rec Amp(L) Rec Amp(R) PB Amp(L) PB Amp(R) A/Rec A/Rec B B 1 2 3 4 5 7 6 8 9 10 12 11 13 14 15 16 17 18 19 20 21 [...]

  • Page 14

    - 13 - IC102 LC78622NE (Digital Signal Processor) N o. Pin Name I/ O Function 32 TEST3 I Test pin. 33 TEST4 I Test pin. 34 N C - Non connection. 35 MUT EL O Mute output terminal for L-ch 36 LVDD - Power supply for L-ch 37 LCHO O O utput terminal for L-ch 38 LVSS - GND for L-ch 39 RVSS - GND for R-ch 4 0 RCHO O Output terminal for R-ch 41 R V D D - [...]

  • Page 15

    - 14 - Pin No Pi n Name Symbol I /O Function 1 P06 AMBER_LED O AMBER_LED Output 2 P07 DSP_RESET O DSP Reset Signal 3 P10/S00 COIN O CD_DSPInterface(command+data Output) 4 P11/SIO/SB0 SQOUT I CD_DSPInterface(SubQ dataInput) 5 P12/SCK0 CQCK O CD_DSPInterface(Clock) 6 P13/S01 VD_GND O Processor Power C heck ( GND) Control Output 7 P14/SII/SB1 Sift O S[...]

  • Page 16

    - 15 - LCD DISPLAY DESCRIPTION F GH B IK J EC LN M A D SURR. S7 S5 S6 P S4 S3 S2 S1 *1 *1 T1 T2 18 COL 40 1 P AD NO . 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 COM1 COM1 -- -- -- 1F 1A 1K 1B 2F 2A 2K 2B 3F 3A 3K 3B 4F 4A 4K 4B COM2 -- COM2 -- -- 1G 1I 1J 1H 2G 2I 2J 2H 3G 3I 3J 3H 4G 4I 4J 4H COM3 -- -- COM3 -- 1E 1M 1N 1C 2E 2M 2N 2C 3E 3[...]

  • Page 17

    - 17 - - 16 - SCHEMATIC DIAGRAM (CD) This is a basic schematic diagram. PRODUCT SAFETY NOTICE Each precaution in this manual should be followed during servicing. Components identified with the IEC symbol ! ! ! in the parts list and the schematic diagram designated components in which safety can be of special significance. When replacing a component[...]

  • Page 18

    - 19 - - 18 - PRODUCT SAFETY NOTICE Each precaution in this manual should be followed during servicing. Components identified with the IEC symbol ! ! ! in the parts list and the schematic diagram designated components in which safety can be of special significance. When replacing a component identified by ! ! ! , use only the replacement parts desi[...]

  • Page 19

    - 25 - - 24 - SCHEMATIC DIAGRAM (AMPLIFIER) This is a basic schematic diagram. PRODUCT SAFETY NOTICE Each precaution in this manual should be followed during servicing. Components identified with the IEC symbol ! ! ! in the parts list and the schematic diagram designated components in which safety can be of special significance. When replacing a co[...]

  • Page 20

    - 27 - - 26 - SCHEMATIC DIAGRAM (TUNER) This is a basic schematic diagram.[...]

  • Page 21

    - 28 - WIRING DIAGRAM (PRIMARY+ SECONDARY POWER TRANSFORMER AND CD LID SWITCH) POWER TRANSFORMER, PRIMARY P.W.BOARD POWER TRANSFORMER, SECONDARY P.W.BOARD CD LID SWTICH P.W.BOARD[...]

  • Page 22

    - 29 - VOLTAGE TABLE IC101 LA9241M P I N 123456789 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 VOL(V) 2.51 2.51 2.54 2.54 2.52 2.52 2.52 2.52 2.52 2.52 2.52 2.52 2.52 2.52 2.52 2.52 2.52 2.52 P I N 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 VOL(V) 2.52 2.52 2.52 0 2.52 2.52 2.52 2.52 2.52 2.52 2.02 2.28 2.28 0 0 4.98 4.98 0 P I N 37 38 39 40 41 [...]

  • Page 23

    - 30 - VOLTAGE TABLE IC445 MM1453XF P I N 123456789 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 VOL(V) 3.42 3.42 0 0 3.42 3.42 3.42 3.42 0 3.42 3.42 3.42 3.42 3.42 4.09 3.42 7.38 IC446 NJM78L05 123 17.3 0.58 5.48 IC601 LC867240A P I N 123456789 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 VOL(V) 0 4.75 4.75 0 4.75 4.75 0 0 4.83 4.83 0 4.75 2.55 2.66 0 2.1 2.4 0 P I[...]

  • Page 24

    SANYO Technosound Co., Ltd. Osaka, Japan Apr. / '01 / 1000 BB Printed in Japan WIRING CONNECTION CD MECHANISM (6P) (15P) CN430 (3P) CN457 (2P) CN456 (2P) CN601 (32P) LCD60 (10P) CN??? (3P) CN1 13 (6P) C N 111 (15P) CN1 14 (5P) CN445 (10P) CN400 (32P) PHONES CN455 CN440 (6P) CN441 (3P) CN201 AM LOOP ANT . CN450 CN458 TUNER & AMP P .W .B L-C[...]

  • Page 25

    - 21 - - 20 - FRONT P.W.BOARD WIRING DIAGRAM (CD & FRONT) CD P.W.BOARD[...]

  • Page 26

    - 23 - - 22 - AMPLIFIER P.W.BOARD WIRING DIAGRAM (TUNE & AMPLIFIER ) TUNER P.W.BOARD[...]