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Denon DCM-380 Service Manual

Stereo cd player
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For U.S.A., Canada, Europe, U.K.
& Australia model
SERVICE MANUAL
DCM-380/280
MODEL
STEREO CD PLAYER
1 Some illustrations using in this service manual are slightly different from the actual set.
16-11, YUSHIMA 3-CHOME, BUNKYOU-KU, TOKYO 113-0034 JAPAN
Telephone: 03 (3837) 5321
X-0162 NC 0211

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  • Page 1 For U.S.A., Canada, Europe, U.K. & Australia model SERVICE MANUAL DCM-380/280 MODEL STEREO CD PLAYER 1 Some illustrations using in this service manual are slightly different from the actual set. 16-11, YUSHIMA 3-CHOME, BUNKYOU-KU, TOKYO 113-0034 JAPAN Telephone: 03 (3837) 5321...

  • Page 2: Safety Precautions

    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.

  • Page 3: Block Diagram

    DCM-380/280 BLOCK DIAGRAM...

  • Page 4: Wiring Diagram

    DCM-380/280 WIRING DIAGRAM C3P101 CP403 CP402 CN802...

  • Page 5: Top Cover

    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.

  • Page 6: Back Panel

    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 Bot- tom Cover, then detach the Back Panel as shown in the arrow direction.
  • Page 7 DCM-380/280 SEMICONDUCTORS CXD3068Q 71 72 59 60 11 13 68 65 66 TES1 TEST FSTO Clock Error XRST Generator Corrector demodurator RFAC Interface ASYI Asymmetry ASYO Corrector ASYE Digital BIAS DOUT XPCK Sub Code FILO Processor Digital FILI CLTV Digital...
  • Page 8 DCM-380/280 CXA2581N RFAC EQ_ON/OFF RW/ROM DC_OFST RFDCI RFDCO RW/ROM VOFST RW/ROM TE_BAL RW/ROM VOFST RW/ROM VOFST RW/ROM RW/ROM APC-OFF (Hi-Z) RW/ROM VOFST (H/L)
  • Page 9 DCM-380/280 CXP82032/82040/82052/82060...
  • Page 10 DCM-380/280 PCM1748 Serial LRCK Output Amp and Input Low-Pass Filter DATA Enhanced Oversampling Multi-Level Digital Filter Delta-Sigma with Modulator Function Controller Output Amp and Function Control Low-Pass Filter System Clock System Clock Power Supply Zero Detect Manager BA033FP...
  • Page 11 DCM-380/280 BA5979S PreV MUTE INTER- FACE LEVEL SHIFT THERMAL Vref SHUTDOWN INTER- FACE REGULATOR T. S. D MONITOR INTER- FACE NJM-4556D...
  • Page 12 DCM-380/280 NJM78L00A NJM78L00UA NJM78L00EA (5V,9V,12V) BA4558 / BA4558F / BA4558N BA4558 / BA4558F BA4558N OUT1 – IN1 OUT2 – – – + IN1 – – IN2 + IN2 K4S161622D Data Input Register LDQM Bank Select 512K x 16 512K x 16 Column Decoder Latency &...
  • Page 13 DCM-380/280 CXA1511L/M Head Limiter Detector & Hysteresis Comparator Integrator Comparator ABLC Photo Diode C2 GND fo N.C. 470, 680 0.01µ 0.01µ 200k (fo = 40kHz) PCM1732 PCM1732 BCKIN HDCD Serial Amplitude LRCIN Input HDCD Decoding Hidden Code Recovery Low-Pass Filter...
  • Page 14 DCM-380/280...
  • Page 15 DCM-380/280 MLC3110A BA05T REFERENCE VOLTAGE z z z z 7DSLQJ VSHFLILFDWLRQV 8QLWV  PP ICP-N taping (T104) ICP-N zigzag fold taping 6.35±0.5 12.7±0.5 0±1.0 5.2Max. 0±0.5 3.85±0.5 4.2Max. 0.5±0.1 φ4.0±0.2 6.35±0.5 5.0 +0.6 −0.2 12.7±0.2...

  • Page 16: Exploded View

    DCM-380/280 EXPLODED VIEW Parts List...

  • Page 17: Parts List Of Exploded View

    DCM-380/280 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. Part Name Remarks Q'ty 958 0001 009 BOTTOM PLATE...
  • Page 18 DCM-380/280 Ref.No. Part No. Part Name Remarks Q'ty 958 0005 801 CUSHION FOR SENSOR 612-DCM370-071 958 0005 908 FIXED CENTER WASHER 606-C426-066 958 0006 004 SCREW(TTP 3x10 ZK PTP) 602-MK7-131 958 0006 101 SCREW(M3x7 PTP) 602-SL24F-096 958 0006 208 MAIN PCB BRACKET...
  • Page 19 DCM-380/280 Ref.No. Part No. Part Name Remarks Q'ty 958 0073 309 LASER LABEL 280BKE2/EK/EA 501-280BKE2-1623 958 0070 506 FRONT PANEL ASS'Y 280BKE2/EA/EK 701-280BKE2-2734 958 0070 519 FRONT PANEL ASS'Y 280BK3 701-280BKE3-2730 958 0070 603 FRONT PANEL ASS'Y 380BK3 701-380BKE3-2726 958 0070 700...

  • Page 20: Packing View

    DCM-380/280 PACKING VIEW − − − − − 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.

  • Page 21: Exploded View Of Cd Mechanism Unit (Cd Trav/Unit Ksm-213Ccm)

    DCM-380/280 EXPLODED VIEW OF CD MECHANISM UNIT (CD TRAV/UNIT KSM-213CCM) PARTS LIST OF CD MECHANISM UNIT Ref.No. Part No. Part Name Remarks Q'ty SX2 6258 771 MOTOR CHASSIS ASS'Y SX2 6257 691 MOTOR GEAR ASS'Y S88 4841 509 OPTICAL PU...

  • Page 22: Parts List

    DCM-380/280 PRINTED WIRING BOARD MAIN CD P.W.B. UNIT Ass’y Parts List COMPONENT SIDE...
  • Page 23 DCM-380/280 Parts List FOIL SIDE...

  • Page 24: Note For Parts List

    DCM-380/280 NOTE FOR PARTS LIST 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. When ordering of part, clearly indicate "1" and "I" (i) to avoid mis-supplying.

  • Page 25: Parts List Of P.w.b. Unit

    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.
  • Page 26 DCM-380/280 Ref.No. Part No. Part Name Remarks Q'ty New 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 (MTZJ6.2-B) 414-HT8015-024 RESISTORS GROUP R101,102 CHIP RESISTOR (12K OHM,1/10W)
  • Page 27 DCM-380/280 Ref.No. Part No. Part Name Remarks Q'ty New R323 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) Only 280 412-CDVD2001-552 R351 CHIP RESISTOR (1K OHM,1/10W)
  • Page 28 DCM-380/280 Ref.No. Part No. Part Name Remarks Q'ty New CAPACITORS GROUP C101 CHIP CAPACITOR (0.1uF/50V) 413-DCM280-773 C102 ELEC. CAPACITOR (47uF/10V,M) 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)
  • Page 29 DCM-380/280 Ref.No. Part No. Part Name Remarks Q'ty New 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...
  • Page 30 DCM-380/280 Ref.No. Part No. Part Name Remarks Q'ty New C711 ELEC. CAPACITOR (10uF/50V) 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 (0.1uF/50V)
  • Page 31 DCM-380/280 Ref.No. Part No. Part Name Remarks Q'ty New X501 958 0074 803 CITIZEN BRAND (CSA-309,16MHz) 427-CDN88-072 HEAT SINK (HW-7501-1) 425-DCM280-063 HEAT SINK 425-KMD3500-016A 958 0038 302 SCREW (3x8mm BTP) 602-2002-077 CERAMIC TUBE (4x2x11.5mm) 605-KMD510P-034 GROUND WIRE (L=110mm) 406-DCM270E3-479 SERVO P.W.B.
  • Page 32 DCM-380/280 Ref.No. Part No. Part Name Remarks Q'ty New 958 0005 801 CUSHION FOR SENSOR 612-DCM370-071 958 0008 109 VFD WASHER 612-HV3700K-059 CONTROL P.W.B. (BARE) 405-DCM280-926 HEADPHONE P.W.B. UNIT ASS’Y Ref.No. Part No. Part Name Remarks Q'ty New 958 0072 203 HEADPHONE P.W.B.
  • Page 33 SCHEMATIC DIAGRAMS (1/3) WARNING: WARNING: DO NOT return the unit to the customer until the problem is located and MAIN CD UNIT (DCM-380 only) Parts marked with this symbol have critical characteristics. corrected. Use ONLY replacement parts recommended by the manufacturer.
  • Page 34 DCM-380/280 SCHEMATIC DIAGRAMS (2/3) NOTICE: ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM CAUTION: ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD Before returning the unit to the customer, make sure you make either (1) a EACH VOLTAGE AND CURRENT ARE MEASUERD AT NO SIGNAL INPUT leakage current check or (2) a line to chassis resistance check.

  • Page 35: Schematic Diagrams

    0.5 milliamps, or if the resistance from chassis to either side of the power card is less than 460 kohms, the unit is defective. WARNING: SCHEMATIC DIAGRAMS (3/3) DO NOT return the unit to the customer until the problem is located and corrected. FRONT UNIT (DCM-380/280)

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Dcm-280

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