For U.S.A., Canada, Europe, U.K. & Australia model SERVICE MANUAL MODEL DCM-380/280 STEREO CD PLAYER 1 Some illustrations using in this service manual are slightly different from the actual set.
DCM-380/280 SAFETY PRECAUTIONS The following check should be performed for the continued protection of the customer and service technician. LEAKAGE CURRENT CHECK Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the power cord is less than 460 kohms, the unit is defective.
DCM-380/280 BLOCK DIAGRAM 3 3
C3P101 4 CP403 CN801 CP501 FRONT SECTION MAIN SECTION CP704 CP705 CP502 CP401 JK302 TRANS SW701 CN301 CD PICKUP CN101 CD MECHANISM AC CORD DCM-380/280 WIRING DIAGRAM CP402 CN802 4 POWER SWITCH CN706
DCM-380/280 DISASSEMBLY (To reassemble, reverse disassembly.) 1. TOP COVER Remove 4 screws A fixing the Top Cover and 5 screws A mounting the Rear Panel, then detach the Top Cover as shown in the arrow direction. 2. MAIN P.W.B. Remove 1 screw A , 2 screws B ,1 screw C fixing the Main P.W.B. and 1 screw B mounting the rear Panel; then detach the Main P.W.B. as shown in the arrow direction. 4 3.
DCM-380/280 4. CONTROL P.W.B. Remove 8 screws E mounting the Front Panel and 1 E screw fixing the Control P.W.B., then detach the Control P.W.B. as shown in the arrow direction. 5. BACK PANEL Remove 3 screws F mounting the Bottom Cover, then detach the Back Panel as shown in the arrow direction. Note: Only in φ3x5mm, other screws can’t be used. 6. LOADER ASS’Y Remove 1 screw G and 4 screws H mounting the Bottom Cover, then detach the Loader Ass’y as shown in the arrow direction.
DCM-380/280 SEMICONDUCTORS 71 72 69 59 60 58 MUTE BCK PCMD LRCK WDCK 11 13 68 10 C2PO WFCK EMPH GFS XUGF VCTL V16M VPCO XTSL XTAI XTAO CXD3068Q 17 14 65 66 67 3 37 TES1 FSTO 27 C4M 16 36 TEST Clock Generator EFM demodurator RFAC 50 ASYI Error Corrector 2 XRST D/A Interface 49 ASYO 48 Asymmetry Corrector ASYE 62 32K RAM BIAS 57 Digital OUT 63 MD2 64 DOUT XPCK 12 Sub Code Processor FILO 53 FILI 54 Digital PLL PCO 55 CLTV 52 MDP 25 LOCK 24 Digital CLV PWMI 23 SENS
AC_SUM EQ_IN RFG BST DCM-380/280 4 3 23 24 26 25 AC SUM AC VCA EQ VFC RFC CXA2581N 15 RFAC EQ_ON/OFF RW/ROM 30 DC_OFST DVCC VC 29 RFDCI 28 RFDCO RW/ROM VC A 6 B 7 C 8 D 9 DVCC 17 FEI 16 FE DVC VOFST RW/ROM VC 19 TE_BAL RW/ROM VC F 10 gm E 11 gm VOFST RW/ROM DVCC 18 TE VOFST VC RW/ROM B DVC C A D SW 12 VOFST DVC VC VCC 22 5 27 14 DVC 1 DVC VC VC LD APC VC RW/ROM APC-OFF (Hi-Z) DVC RW/ROM VC (H/L) VCC GND 2 21 CEI 20 CE VCC PD DVCC 8 13 DVCC 8
RAM RAM ADJ TO CINT EC1 16-BIT CAPTURE TIMER/COUNTER 2 8-BIT TIMER 1 8-BIT TIMER/COUNTER 0 EC0 BUFFER RAM SERIAL INTERFACE (CH1) SERIAL INTERFACE (CH0) CS0 SI0 SO0 SCK0 FIFO SI1 SO1 SCK1 REMOCON 14-BIT PWM GENERATOR UART BAUD RATE GENERATOR UART RECEIVER UART TRANSMITTER KEY SCAN FDP CONTROLLER/ DRIVER RMC PWM TxD RxD 32 A24 to A56 VFDP KR0 to KR7 8 8 A16 to A23 G0/A0 to G15/A15 16 A/D CONVERTER 2 2 2 PRESCALER/ TIME-BASE TIMER ROM 32K/40K/ 52K/60K BYTES SPC 700 CPU CO
DCM-380/280 10 PCM1748 BCK LRCK Serial Input I/F DAC 8x Oversampling Digital Filter with Function Controller DATA ML MC Output Amp and Enhanced Multi-Level Delta-Sigma Modulator Function Control I/F VCOM DAC Output Amp and VOUTR Low-Pass Filter MD System Clock 10 VCC AGND ZEROR BA033FP VDD Power Supply Zero Detect DGND System Clock Manager ZEROL SCK VOUTL Low-Pass Filter
DCM-380/280 BA5979S 32 31 30 29 28 27 100 26 25 24 23 22 10k PreVCC F R 50k POWVCC 20 19 18 17 D D D D 50k MUTE R + 10k 21 + INTER- 19k FACE LEVEL F 10k SHIFT POWVCC 50k THERMAL Vref F SHUTDOWN 50k INTERFACE F R REGULATOR T. S.
DCM-380/280 NJM78L00A NJM78L00UA NJM78L00EA (5V,9V,12V) BA4558 / BA4558F / BA4558N BA4558 / BA4558F BA4558N OUT1 1 8 VCC – IN1 2 7 OUT2 6 – IN2 5 + IN2 4 5 6 7 8 + IN2 – IN2 OUT2 VCC – VEE 2ch 3 4 + + IN1 VEE + 2 3 2ch – – IN1 + IN1 + – 1 – + OUT1 1ch 1ch K4S161622D I/O Control Data Input Register Bank Select Output Buffer 512K x 16 Sense AMP Row Decoder ADD Row Buffer Refresh Counter Column Decoder Col.
DCM-380/280 CXA1511L/M Head Amp IN Limiter Amp BPF Detector & Hysteresis BEF Comparator Integrator Comparator 1 ABLC Photo Diode 3 4 5 6 C2 GND fo N.C. 2 C1 7 8 OUT VCC 470, 680 0.01µ 0.
Functions Io max (A) Pd max (W) Vcc max (V) Package Package SIP10H DIP16F 24 Vcc max (V) 3.1 16 DIP16F DIP16F DIP16F 1.9 16 16 16 Pd max (W) 1.9 1.9 1.9 0.7 0.7 0.7 0.7 Io max (A) 2.0 Bridge Connection Power Operational Amplifiers 1-Channel Type No. LA6511 Built-in muting circuits Single-channel BTL power operational amplifier High output current (Io max = 2.
DCM-380/280 MLC3110A BA05T - REFERENCE VOLTAGE 1 OUT + Vcc GND 3 + 2 z7DSLQJ VSHFLILFDWLRQV 8QLWV PP ICP-N taping (T104) ICP-N zigzag fold taping 6.35±0.5 12.7±0.5 0±1.0 2.5Min. 27 3.85±0.5 +0.6 5.0 −0.2 12.7±0.2 0 33 40 0.4 +0.2 −0.1 0.7±0.2 φ4.0±0.2 6.35±0.5 6.0±0.5 6.0±0.5 2.5Min. 0.5±0.1 4.2Max. 9.0±0.5 +1.0 18.0−0.5 0~0.5 5 +0.1 19.0−0.5 16.0±0.5 11.0Max. 5.2Max. 0±0.5 5.2Max.
DCM-380/280 EXPLODED VIEW Parts List 16 16
DCM-380/280 17 PARTS LIST OF EXPLODED VIEW Note: The symbols in the column "Remarks" indicate the following destinations. E3: U.S.A./Canada model E2: Europe model EK: U.K. model EA: Australia model Ref.No. Part No.
DCM-380/280 ! ! ! ! ! ! ! ! ! ! Ref.No. Part No.
DCM-380/280 Ref.No. Part No. 104 105 105 105 106 106 107 108 109 110 111 112 113 114 115 958 0073 309 958 0070 506 958 0070 519 958 0070 603 958 0070 700 958 0070 807 958 0010 207 958 0010 100 958 0001 203 958 0070 904 958 0024 400 958 0071 000 958 0071 107 Part Name Remarks LASER LABEL FRONT PANEL ASS'Y FRONT PANEL ASS'Y FRONT PANEL ASS'Y POWER SW ASS'Y POWER SW ASS'Y MOTOR ASS'Y TURNTABLE MOTOR ASS'Y TURNTABLE ASS'Y 27P1.
DCM-380/280 PACKING VIEW 4 3 2 5 8 6 11 8−3 9 8 −1 8−2 10 7 1 8 8 −5 −4 9 11 10 PARTS LIST OF PACKING & ACCESSORIES Note: The symbols in the column "Remarks" indicate the following destinations. E3: U.S.A./Canada model E2: Europe modeI EK: U.K. model EA: Australia model Ref.No. Part No.
DCM-380/280 21 EXPLODED VIEW OF CD MECHANISM UNIT (CD TRAV/UNIT KSM-213CCM) PARTS LIST OF CD MECHANISM UNIT Ref.No. Part No.
DCM-380/280 PRINTED WIRING BOARD MAIN CD P.W.B.
DCM-380/280 Parts List FOIL SIDE 23 23
DCM-380/280 24 NOTE FOR PARTS LIST l Part indicated with the mark " " are not always in stock and possibly to take a long period of time for supplying, or in some case supplying of part may be refused. l When ordering of part, clearly indicate "1" and "I" (i) to avoid mis-supplying. l Ordering part without stating its part number can not be supplied. l Part indicated with the mark " " is not illustrated in the exploded view. l Not including Carbon Film ±5%, 1/4W Type in the P.W.Board parts list.
DCM-380/280 PARTS LIST OF P.W.B. UNIT SERVO P.W.B. UNIT ASS’Y Note: The symbols in the column "Remarks" indicate the following destinations. E3: U.S.A./Canada model E2: Europe modelI EK: U.K. model EA: Australia model Ref.No. Part No. Part Name Remarks Q'ty New 958 0073 406 SERVO P.W.B. UNIT ASS'Y 280BKE2/BKEA/BKEK 704-DCM280-4043 1 958 0073 503 SERVO P.W.B. UNIT ASS'Y 280BKE3 704-280E3-4098 1 * * 958 0073 600 SERVO P.W.B.
DCM-380/280 Ref.No. Part No. Part Name Remarks D721 958 0075 006 RECTIFYING DIODE (1N4004) 414-DV300-055 D722 958 0016 706 ZENER DIODE (MTZJ27-D,1/2W,T-77) 414-DCM270E3-093 D723 958 0075 200 ZENER DIODE (MTZJ6.
DCM-380/280 Ref.No. Part No. R323 Part Name Remarks CHIP RESISTOR (1K OHM,1/10W) 412-CDVD2001-540 R324,325 CHIP RESISTOR (2.7K OHM,1/10W) 412-007USB-677 R327 CARBON FILM RESISTOR (56 OHM) 412-KT346-113 R332-335 CHIP RESISTOR (0 OHM,1/10W) R351 CHIP RESISTOR (1K OHM,1/10W) R402 CHIP RESISTOR (470K OHM,1/10W) 412-007USB-707 R404 CHIP RESISTOR (1K OHM,1/10W) 412-CDVD2001-540 R406 CHIP RESISTOR (1.
DCM-380/280 Ref.No. Part No. Part Name Remarks CAPACITORS GROUP C101 CHIP CAPACITOR (0.1uF/50V) C102 ELEC. CAPACITOR (47uF/10V,M) 413-DCM280-773 413-3113-043 C103 ELEC. CAPACITOR (4.7uF/50V) 413-3113-050 C104 ELEC. CAPACITOR (47uF/10V,M) 413-3113-043 C105 CHIP CAPACITOR (0.1uF/50V) 413-DCM280-773 C106 ELEC. CAPACITOR (1uF/50V) 413-3113-049 C107 CHIP CAPACITOR (1000pF/50V) 413-DCM280-768 C108 ELEC. CAPACITOR (100uF/10V) 413-3113-046 C109 CHIP CAPACITOR (0.
DCM-380/280 Ref.No. Part No. Part Name Remarks C315 ELEC. CAPACITOR (10uF/50V) 413-DM1000-352 C316,317 ELEC. CAPACITOR (47uF/16V) 413-KT350-085 C318 ELEC. CAPACITOR (10uF/50V) 413-DM1000-352 C321,322 CHIP CAPACITOR (470P,0603 TYPE) 413-007USB-786 C326 CHIP CAPACITOR (10pF/50V) 413-007USB-780 C327 ELEC. CAPACITOR (10uF/50V) 413-DM1000-352 C328-330 CHIP CAPACITOR (1000pF/50V) 413-DCM280-768 C331 ELEC. CAPACITOR (33uF/50V) C351-353 ELEC. CAPACITOR (10uF/50V) C401 ELEC.
DCM-380/280 Ref.No. Part No. C711 Part Name Remarks ELEC. CAPACITOR (10uF/50V) Q'ty New 413-DM1000-352 C712 ELEC. CAPACITOR (100uF/35V) 413-HMD5000-356 C713 ELEC. CAPACITOR (100uF/50V) 413-HC1421FR-277 C714 CHIP CAPACITOR (0.1uF/50V) 413-DCM280-773 C715 ELEC. CAPACITOR (33uF/16V) 413-KC220-114 C718,719 ELEC. CAPACITOR (100uF/50V) 413-HC1421FR-277 C720 CHIP CAPACITOR (0.
DCM-380/280 Ref.No. X501 Part No. 958 0074 803 Part Name Remarks Q'ty New CITIZEN BRAND (CSA-309,16MHz) 427-CDN88-072 - HEAT SINK (HW-7501-1) 425-DCM280-063 1 - HEAT SINK 425-KMD3500-016A 1 958 0038 302 1 SCREW (3x8mm BTP) 602-2002-077 2 - CERAMIC TUBE (4x2x11.5mm) 605-KMD510P-034 2 - GROUND WIRE (L=110mm) 406-DCM270E3-479 1 - SERVO P.W.B. 405-DCM280-925 1 * * CONTROL P.W.B. UNIT ASS’Y Ref.No. Part No. 958 0072 407 Part Name Remarks CONTROL P.W.B.
DCM-380/280 Ref.No. Part No. Part Name Remarks Q'ty New 958 0005 801 CUSHION FOR SENSOR 612-DCM370-071 1 958 0008 109 VFD WASHER 612-HV3700K-059 2 CONTROL P.W.B. (BARE) 405-DCM280-926 1 - HEADPHONE P.W.B. UNIT ASS’Y Ref.No. Part No. 958 0072 203 Part Name Remarks HEADPHONE P.W.B. UNIT ASS'Y 704-DCM380-4041 C323,324 CHIP CAPACITOR (1000pF/50V) 413-DCM280-768 C325 CHIP CAPACITOR (0.
DCM-380/280 33 SCHEMATIC DIAGRAMS (1/3) 1 2 3 4 5 6 7 8 9 10 11 A B C D E F G NOTICE: ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRENT ARE MEASUERD AT NO SIGNAL INPUT CONDITION. CIRCUIT AND PARTS ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE. WARNING: Parts marked with this symbol have critical characteristics. Use ONLY replacement parts recommended by the manufacturer.
DCM-380/280 34 SCHEMATIC DIAGRAMS (2/3) 1 2 3 4 5 6 7 8 9 10 11 A B C D E F G NOTICE: ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRENT ARE MEASUERD AT NO SIGNAL INPUT CONDITION. CIRCUIT AND PARTS ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE. WARNING: Parts marked with this symbol have critical characteristics. Use ONLY replacement parts recommended by the manufacturer.
DCM-380/280 35 SCHEMATIC DIAGRAMS (3/3) 1 2 3 4 A B C D NOTICE: ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRENT ARE MEASUERD AT NO SIGNAL INPUT CONDITION. CIRCUIT AND PARTS ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE. WARNING: Parts marked with this symbol have critical characteristics. Use ONLY replacement parts recommended by the manufacturer.
