Sanyo DC-DA70 Service Manual

Text of Sanyo DC-DA70 User Guide:

• FILE NO. Service Manual Micro Component System DC-DA70 (AU) (PA) PRODUCT CODE No. 129 573 04 (AU) 129 573 05 (PA) REFERENCE No. SM5810135 SPECIFICATIONS General Output power ......................... 4 W x 2 (at 4 ohms, 10% distortion) Outputs .................................. SPEAKERS : 4 ohms PHONES : 8 - 32 ohms Power requirements............... AC 230 - 240 V, 50 Hz (AU) AC

• Sanyo DC-DA70, - 1 - 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 LASER RADIATION WHEN OPEN AND INTERLOCKS DEFEATED. AVOID EXPOSURE TO BEAM. ADVARSEL – USYNLIG LASER STRÅLING VED ÅBNING, NÅR SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION, UNDGÅ UDS ÆTTELSE

• - 6 - PARTS LIST AMPLIFIER P.W.BOARD ASSY REF.NO. PART NO. DESCRIPTION 71 614 310 4094 ASSY,PWB,AMP,AMP-TU (AU) (Only Initial) 71 614 310 4919 ASSY,PWB,AMP,AMP-TU (PA) (Only Initial) C4714 403 058 4608 POLYESTER 0.15U J 50V C4716 403 350 8403 ELECT 1000U M 16V or 403 313 4602 ELECT 1000U M 16V C4814 403 058 4608 POLYESTER 0.15U J 50V C4816 403 313 4602 ELECT 1000U M

• Sanyo DC-DA70, - 13 - IC602 LC78622E (Digital Signal Processor) No. Pin Name I/O Function 32 TEST3 I Test pin. 33 TEST4 I Test pin. 34 NC - Non connection. 35 MUTEL O Mute output terminal for L-ch 36 LVDD - Power supply for L-ch 37 LCHO O Output terminal for L-ch 38 LVSS - GND for L-ch 39 RVSS - GND for R-ch 40 RCHO O Output terminal for R-ch 41 RVDD - Power supply for R-ch 42 MUTER O Mute output terminal for R-ch 43 XVDD - Power supply of crystal oscillation 44 XOUT O Connection terminal of crystal oscillation (16.9344MHz) 45 XIN I Co

• Sanyo DC-DA70, - 12 - IC BLOCK DIAGRAM & DESCRIPTION IC101 LA9241M (Servo Signal Processor) IC410 BA3314 ( MD Rec. Amplifier) IC103 LA6541 (Pick-up Actuator & Motor Driver) FSS 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 41 40 39 38 37 36 35 34 33 42 32313029282726252423222120191817 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 Vcc1 LDS LDD BH1 PH1 LF2 VR REF1 Vcc2 DRF CE DAT CL CLK DEF NC TBC FSC DGND SLI SLC RFS- RFSM CV+ CV- SLOF HFL TES TOFF TGL JP+ JP-SL+SL-SLDSLEQSPDSP-SPGSPI SP AGND FE-FE FA-FAFD- FD TO JP TD TD- TA TH SCI TESI TE TE- TB F E FIN1 FIN2 APC RF DET REF VCA I/V BAL VCA INTER FACE ˚-com SLC RF Amp TE T.SERVO &a

• Sanyo DC-DA70, - 8 - PARTS LIST CD P.W.BOARD ASSY REF.NO. PART NO. DESCRIPTION 73 614 307 8982 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 CN122 645 005 8134 PLUG,8P D1402 407 099 5204 ZENER DIODE MTZJ5.1B D1403 407 012 4406 DIODE 1SS133 D1404 407 012 4406 DIODE 1SS133 D1410 ! !! 407 098 3300 DIODE RL153-BF-S2 IC101 409 396 8100 IC LA9241ML IC102 409 435 2106 IC LC78622NE IC103 ! !! 409 372 9602 IC LA6541(until M0403001 for AU

• Sanyo DC-DA70, SANYO Technosound Co., Ltd. Osaka, Japan Jun. / '00 /1550 BB Printed in Japan FL DISPLAY DESCRIPTION PAD NO. 1 2 3 4 5 6 7 8 9 10 11 12 COM1 COM1 - - 7A 7B - 6A 6B JAZZ PLAY 5 AM COM2 - COM2 - 7F 7G 7C 6F 6G 6C MHZ MEM FM COM3 - - COM3 7E 7D CH 6E 6D TR KHZ LW MW PAD NO. 13 14 15 16 17 18 19 20 21 22 23 24 25 COM1 4A 4B 4H 3A 3B 3H 2A 2B 2H PCP 1A 1B 1H COM2 4F 4G 4C 3F 3G 3C 2F 2G 2C ROCK 1F 1G 1C COM3 4E 4D REP 3E 3D PS 2E 2D MONO CLASSIC 1E 1D ST 1H 2H 3H 4H A J FI K B G M L N H E C D

• Sanyo DC-DA70, - 41 - IC BLOCK DIAGRAM & DESCRIPTION 78 1 17 292 1 30 11 12 3 5 2831912 2110 22 9 20 11 R RLLLRR RLLLRR L R L IC411 LC75392 IC410 BA3314 IC415 MM1453XF IC412 TA8229K HEAD PHONE RIGHT SPEAKER LEFT SPEAKER CN421 PICK UP A C B D E F 1 2 3 4 4110 5V IC101 LA9241M IC102 LC78622NE 37 40 L R L R RF 13 14 21 11 IC211 LA1844M IC201 LA1186N EF FILTER RF BPF FM ANT AM LOOP R P P R P R P P R L R L R L R R P/R HEAD P/R HEAD HF DSC 6 TUNER SECTION CD SECTION AMP SECTION 12 10 2 6 S4950-3 S4950-4 S4950-6 S4950-5 S4950-1

• Sanyo DC-DA70, - 2 - 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 STOP button. 7. Turn off the POWER switch. CD PLAYER ADJUSTMENTS OSCILLOSCOPE + TP1 (RF) TP4 (VC) - TAPE ADJUSTMENTS R / P HEAD RED WHITE YELLOW EARTH a. Replacing the head 1. After replacement, demagnetize the hea

• Sanyo DC-DA70, - 37 -- 36 - WIRING DIAGRAM (CD & FRONT) IC103 is changed from the units with serial number M0403001(AU) , M0402001(PA). This wiring diagram is for units with serial number M0403001(AU) , M0402001(PA) onward. Please refer to the wiring diagram on the page 38 for the units with the smaller serial number than M0403001(AU) , M0402001(PA).

• - 33 -- 32 - SCHEMATIC DIAGRAM (CD) IC103 is changed from the units with serial number M0403001(AU) , M0402001(PA). This schematic diagram is for units with smaller serial number than M0403001(AU) , M0402001(PA). Please refer to the schematic diagram on the page 34-35 for the units with serial number M0403001(AU) , M0402001(PA) onward. Please see the wiring diag

• Sanyo DC-DA70, - 35 -- 34 - SCHEMATIC DIAGRAM (CD) IC103 is changed from the units with serial number M0403001(AU) , M0402001(PA). This schematic diagram is for units with serial number M0403001(AU) , M0402001(PA) onward. Please refer to the schematic diagram on the page 32-33 for the units with smaller serial number than M0403001(AU) , M0402001(PA). Please see the wiring diagram on the page 36-37. This is a basic schematic diagram.

• - 7 - PARTS LIST REF.NO. PART NO. DESCRIPTION R4750 401 038 0800 MT-GLAZE 22K JA 1/10W R4751 401 038 0800 MT-GLAZE 22K JA 1/10W R4752 ! !! 402 071 1304 FUSIBLE RES 2.2 JA 1/4W R4753 401 037 9408 MT-GLAZE 180K JA 1/10W R4756 401 038 6406 MT-GLAZE 4.7K JA 1/10W R4760 401 037 5608 MT-GLAZE 10K JA 1/10W R4761 401 037 5400 MT-GLAZE 1K JA 1/

• Sanyo DC-DA70, - 42 - WIRING CONNECTION MOTOR SWITCH R/P HEAD RED ORANGE YELLOW BROWN M TAPE DECK MECHANISM L-CH SPEAKER BOX R-CH SPEAKER BOX CD MECHANISM CD P.W.B FRONT P.W.B LED P.W.B BOARD TO BOARD LCD60 CN441 (2P) CN406 (4P) CN491 (12P) CN421 PHONES CN490 (8P) CN402 (2P) CN401 (2P) CN422 (2P) CN601 (12P) CN603 (17P) CN602 (2P) CN122 (8P) CN111 (15P) (15P) CN113 (6P) (6P) CN201 CN203 (1P) CN202 (17P) CN405 (4P) FU401 T2A L 250V BK RE BR P.T POWER SUPPLY P.W.B AMP P.W.B TUNER P.W.B AM LOOP ANT. FM ANT. BL AC IN 230-240V 50Hz (AU) 110-120V/220-240V 50/60Hz (PA)

• Sanyo DC-DA70, - 5 - 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 DESIGNATED, OR PARTS WITH THE SAME RATINGS OF RESISTANCE, WATTAGE OR VOLTAGE THAT ARE DESIGNATED IN THE PARTS LIST IN THIS MANUAL. L

• Sanyo DC-DA70, - 4 - EXPLODED VIEW (CABINET & CHASSIS) 1 12 13 3 4 2 5 6 7 8 9 10 11 19 20 16 18 31 26 17 25 23 22 21 15 24 14 27 28 Y15 Y15 Y06 Y06 Y07 Y13 Y12 Y14 Y14 Y08 Y08 Y08 Y11 Y03 29 Y13 Y14 Y04 Y10 Y09 Y09 Y05 Y05 Y16 Y16 Y10 Y07 Y13 Y01 Y01 30 30 73 57 72 75 74 52 71 76 58 55 56 51

• Sanyo DC-DA70, - 9 - PARTS LIST REF.NO. PART NO. DESCRIPTION CT211 645 032 5663 TRIMMER,7PF D2002 407 157 8109 VARACTOR DI SVC211-B D2003 407 157 8109 VARACTOR DI SVC211-B D2004 407 012 4406 DIODE 1SS133 D2005 407 012 4406 DIODE 1SS133 D2006 407 012 4406 DIODE 1SS133 D2101 407 012 4406 DIODE 1SS133 D2102 407 105 1305 VARACTOR DI SVC342L-V or 407 105 1602 VARACTOR DI SVC342M-V D2104 407 099 5303 ZENER DIODE MTZJ5.6B IC201 409 016 0200 IC LA1186N-AUDIO IC211 409 474 3201 IC LA1844ML L2001 645 040 2753 INDUCTOR,AIR --- L2002 645 040 2746 COIL,AIR --- L2003 645 002 1534 INDUCTOR,8

• Sanyo DC-DA70, - 3 - TUNER ADJUSTMENTS • Use a plastic screw driver for adjustments. • MODE : ST (Stereo) • Speaker impedance : 6 ohm • TUNING FM : 87.5 - 108.0MHz AM : 522 - 1710KHz SG RF Level : 75 open Voltage dBµV Antenna : 75 unbalanced , Modulation : 1 kHz Dev. : ±22.5kHz(MONO)  22.5kHz(STEREO) ±6.75kHz(PILOT) FM Ant. ：75Ω unbalanced Modulation frequency : 1kH z Standard Input : 60dB Deviation : ±22.5kHz (Mono) Item Frequency Alignment Parts Remark IF(0V) Alignment 98MHz INPUT LEVEL Alignment Voltage Check Voltage FM ANT SG=66dBμ V IC211 3,22pin(TP22,TP23) T2002 IC211 3,22pin(TP22,TP23) is 0.0

• - 11 - IC BLOCK DIAGRAM & DESCRIPTION IC201 LA1186N ( FM Front End) IC211 LA1844ML ( Tuner System) FM IF FM DET LEVEL DET S-CURVE AM/FM IF BUFF REG GND COMP TUNING DRIVE AM IF AM DET VCC AGC PILOT CANCEL PILOT DET DECODER ANTI-BIRDIE STEREO SW FF 38k FF 19k∠ VCO 304kHz AM RF.AMP AM MIX AM OSC ALC BUFF P-DET φ FF 19k∠ 2 π 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22

• Sanyo DC-DA70, - 10 - EXPLODED VIEW & PARTS LIST (CD MECHANISM) PM03 PM04 PM05 PM09 PM09 PM02 PM08 PM01 PM10 PM07 PM06 PM08 PARTS LIST TAPE MECHANISM (TM-DA70TN-SH... Only Initial) REF.NO. PART NO. DESCRIPTION 614 309 7976 ASSY,MECHA,TM-DA70TN-SH TM01 645 041 3025 R.P HEAD TM02 645 009 1612 PINCH ROLLER ARM ASSY TM03 645 033 8625 E.HEAD 6PA TM04 645 009 1766 RF BELT TM05 645 033 3415 MAIN BELT TM06 614 304 1467 ASSY,MOTOR TM06 TM05 TM04 TM02 TM01 TM03 CD MECHANISM (CDDA11-SASH...Only Initial) REF.NO. PART NO. DESCRIPTION PM01 620 021 8436 PLUG 6P PM02 620 233 0853 ASSY MOTOR,BASE C

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