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Denon dcd-485 Service Manual
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Denon dcd-485 Service Manual

Stereo cd player
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Hi-Fi Component
SERVICE MANUAL
DCD-485/685
MODEL
STEREO CD PLAYER
DCD-485
DCD-685
Some illustration using in this service manual is slightly from the actual set.

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Summary of Contents for Denon dcd-485

  • Page 1 Hi-Fi Component SERVICE MANUAL DCD-485/685 MODEL STEREO CD PLAYER DCD-485 DCD-685 Some illustration using in this service manual is slightly from the actual set.
  • Page 2 (2) a line to chassis resistance check. If the leakage current exceeds 0.5 miliamps, or if hte resistance from chassis to either side of the power cord is less than 460 kohms, the unit is detective. SPECIFICATIONS SPECIFICATIONS DCD-485 DCD-685 AUDIO Number of Channels: 2 channels...

  • Page 3: Front Panel

    3. Detach the Top Cover as shown in the fig. 2. Front Panel 1. Remove 1 screw 3 on the Rear Panel and 1 screw 4 fixing Support Bracket (b). (only DCD-485) 2. Take off the Mecha Cover after removing Support Bracket 2 screws 5 .
  • Page 4 3. CD Mecha. Unit 1. Remove 4 screws 9 fixing the CD Mecha. 2. Unplug Connectors (b), (c) and FFC from each socket. 3. Release the FFC from the Clamper. 4. Main P.W.B. 1. Remove 5 screws 10 , 5 screws 11 on the Rear Panel and detach it.
  • Page 5 CD TEST MODE Setting of the test mode How to start the test mode: Turn on the power in the condition that CLOSE (Pin No. 3 ) and OPEN (Pin No. 4 ) of CX053 are being shorted. ( “01” is indicated on the DISPLAY) To exit from the test mode, turn off the power.
  • Page 6 How to check the test mode ( 1 ) DISC discrimination, adjustment * Insert DISC, and press the PAUSE button. * “06 Adj” is displayed, and discrimination of DISC size 8 cm/12 cm, discrimination of DISC reflectance (CD, CD-R/CD-RW), adjustment of focus, tracking offset, and EF balance will be performed.
  • Page 7 Fig. 4 In “03 F on” Fig. 5 In “03 F on” * Press the PLAY button again. * “04 t on” is displayed. Tracking, CLV, and slide servo will be actuated. * Monitor HF signal using the test terminals, HF of CX053 (Pin No. 1 ) and VC of CX063 (Pin No.
  • Page 8 Wave-forms of each point When 12 cm DISC When 12 cm DISC stop start When 8 cm DISC When 8 cm DISC stop start When focus servo During PAUSE Track search Track search (when reverse) (when forward) During PLAY Focus search (no DISC) OPEN When the tray...
  • Page 9 BLOCK DIAGRAM...
  • Page 10 NOTE FOR HANDLING OF LASER PICK-UP Description of the Components +Z-axis direction +X-axis direction Object Lens Actuator cover OP Slide base PAL-2 Flexible board Label Slide rack Z-axis +Y-axis direction Y-axis (Tangental direction) Flexible flat cable connector X-axis (Radial direction) Label year KSS-213C...
  • Page 11 Caution for Handling the Laser Pick-up 4. Metal Bearing The laser pick-up KSS-213C is assembled and precisely As the metal bearing of Cu-compound sintered alloy is adjusted using a sophisticated manufacturing process in our impregnated with FROIL946P, never fail to supply the plant.
  • Page 12 SEMICONDUCTORS IC's µPD78044FGF-188-3B9 (IC601) 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 P113/FIP21 P33/TI1 P112/FIP20 P34/TI1 P111/FIP19 P35/PCL P110/FIP18 P36/BUZ P107/FIP17 P106/FIP16 LOAD P105/FIP15 PD78044FGF-188-3B9 P104/FIP14 P103/FIP13...
  • Page 13 Terminal Port Function − − − P04/XT1 P. DG Not used (Connect to GND) − − − − − − Not used (Open) − − − − − − − − − − Main system clock input − − − −...
  • Page 14 LA6559 (IC101) Name Function Thermal 5CH output change terminal, logic input of Shutdown loading block Signal System VCC Signal System GND S-VCC S-GND signal system power supply Input S-Vcc Power Supply (Forward/Reverse/ (LOADING) (BTL-AMP:CH1~4) CH2 to CH4 VCC2 MUTE2 MUTE2 Break/OFF) Output Vcc2...
  • Page 15 PCM1735E PCM1735E Terminal Function (for DCD-485 : IC301) Name Function LRCK LRCK clock input (fs) LRCK ML/IIS DATA Data input DATA MC/DM1 Bit clock input for data MD/DM0 CLKO System clock, buffer output CLKO MUTE X'tal oscillator connect or ext. clock input...
  • Page 16 LC78625E (IC106)
  • Page 17 Emitter Collecter OUT (+5V) DELAY Out (+) Out (+) M5290FP (IC502) REFERENCE −Vcc +Vcc RESET DELAY Collector Out (-) Emitter Out (+) CURRENT OVER HEAT REF.V CIRCUIT LIMITER PROTECTOR Emitter Out (-) Collecter Out (+) ON/OFF -5V OUT +5V OUT ON/OFF CONTROL BALANCE...
  • Page 18 IC PROTECTOR BA15218F (for DCD-485 : IC303) (for DCD-685 : IC323, 324) ICP-N20 (IC503) A OUTPUT A - INPUT B OUTPUT A +INPUT B - INPUT B +INPUT TRANSISTORS 2SA1037K (S/R) 2SD2144S 2SB562 (C) 2SB1185 (E/F) 2SC3326 (for DCD-485) 2SD1762 (E/F)
  • Page 19 Remote Control Sensor GP1U271X (IC601) FL DISPLAY 6-ST-33GK (Part No. : 393 8021 006) Anode Connection Hysteresis Compararor GND Vcc Vout f 1g Pin Connection 10 11 12 13 14 15 Pin No. Connection F1 F1 NP 1G 2G 3G 4G 5G 6G NX P16 16 17 18 19 20 21 22 23 24...
  • Page 20 PRINTED WIRING BOARD CD BOARD ASS'Y COMPONENT SIDE...
  • Page 21 COPPER SIDE...

  • Page 22: Note For Parts List

    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. Ordering part without stating its part number can not be supplied.

  • Page 23: Dcd-485 Model Only

    TR401,402 274 0160 907 Transistor 2SD2144STPU DCD-685 model only R151 247 2010 927 Carbon chip 15 kohm 1/10W RM73B--153JT TR403,404 273 0348 904 Transistor 2SC3326 A/B (TAPE) DCD-485 model only R152 247 2010 972 Carbon chip 24 kohm 1/10W RM73B--243JT R153...

  • Page 24: Model Only

    247 2005 903 Carbon chip 100 ohm 1/10W RM73B--101JT R307,308 247 2011 942 Carbon chip 47 kohm 1/10W RM73B--473JT DCD-685 model only DCD-485 model only R183 247 2011 942 Carbon chip 47 kohm 1/10W RM73B--473JT R309,310 247 2008 971 Carbon chip 3.6 kohm 1/10W RM73B--362JT...

  • Page 25: Model Only

    257 0512 903 Ceramic chip 0.1uF/25V CK73F1E104ZT C214,215 257 0503 941 Ceramic chip 12pF/50V CC73CH1H120JT C145 257 0507 934 Ceramic chip 220pF/50V CC73CH1H221JT DCD-485 model only C146 257 0509 929 Ceramic chip 1000pF/50V CK73B1H102KT C216 257 0512 903 Ceramic chip 0.1uF/25V CK73F1E104ZT C147...
  • Page 26 257 0505 907 Ceramic chip 56pF/50V CC73CH1H560JT C301 254 4538 939 Electrolytic 47uF/16V CE04W1C470MT SMG/RE3 C387,388 254 4538 942 Electrolytic 100uF/16V CE04W1C101MT SMG/RE3 DCD-485 model only C389 257 0512 903 Ceramic chip 0.1uF/25V CK73F1E104ZT C302,303 257 0512 903 Ceramic chip 0.1uF/25V CK73F1E104ZT C390...
  • Page 27 399 0743 005 Crystal 8.4672 MHz DCD-685 model only1 CX63 205 0190 065 6P NH connector base X103 399 0742 006 Crystal 16.9344 MHz DCD-485 model only1 CX141 204 6504 005 14P PH-SAN connector cord X601 399 0755 909 Ceramic resonator4.23MHz CSTS0423MG06-T2 CX161...

  • Page 28: Gold Model Only

    Part Name Remarks Q'ty Ref.No. Part No. Part Name Remarks Q'ty 1U-3346 CD board ass'y DCD-485 model only SCREWS 1U-3346A CD board ass'y DCD-685 model only Servo & D/A unit 473 7002 021 3X8 CBTS (S)-B DCD-485 model only Power unit...
  • Page 29 EXPLODED VIEW...
  • Page 30 WARNING: Parts marked with this symbol have critical characteristics. Use ONLY replacement parts recommended by the manufacturer.
  • Page 31 PARTS LIST OF CD MECHANISM UNIT Ref. No. Part No. Part Name Remarks Q'ty S26 4629 001 Tray (C) This part (No.2)doesn't belong to the tray. Take it down from old tray and use again when changing the tray. S26 2554 401 Gear cover(S) S26 2553 501 Tray gear(S) S26 2554 601 Chucking plate S26 2629 401 Screw 2.6 x 7 +PTPWH...
  • Page 32 EXPLODED VIEW OF CD MECHANISM UNIT KSL 2130 CCM 1 2 - 1 1 2 - 2...

  • Page 33: Table Of Contents

    Part Name Remarks 505 0131 050 Cabinet cover 503 1386 002 Cushion 501 2131 001 Carton case DCD-485 model only 1 501 2131 014 Carton case DCD-685 model only 1 505 9125 009 Poly cover 515 0867 101 S.S.list(EX) 203 2310 009...
  • Page 34 SCHEMATIC DIAGRAM ( for DCD-485 ) DIGITAL CY052 R208 [COAXAL] FB116 OPEN 5P-PHs +5V_D2 T101 FL601 FB105 OPEN JK102 C240 OPEN OPEN R239 OPEN FL TUBE IC108 R242 OPEN FL SPACER(T=5) FL SPACER(T=5) FB118 OPEN FB102 [1/3] OPEN R155 X101...
  • Page 35 SCHEMATIC DIAGRAM ( for DCD-485 ) DIGITAL CY052 R208 [COAXAL] FB116 5P-PHs OPEN +5V_D2 T101 FB105 OPEN JK102 FL601 C240 OPEN R239 OPEN FL TUBE OPEN IC108 R242 OPEN FL SPACER(T=5) FL SPACER(T=5) FB118 FB102 [1/3] OPEN OPEN R155 X101...
  • Page 36 SCHEMATIC DIAGRAM ( for DCD-485 ) R208 FB116 OPEN +5V_D2 T101 OPEN FB105 C240 OPEN OPEN IC108 R242 OPEN FB118 FB102 [1/3] OPEN R155 OPEN OPEN X101 OPEN OPEN FB121 FB123 OPEN OPEN C117 R131 OPEN C185 R205 FB110 OPEN...
  • Page 37 DIGITAL CY052 [COAXAL] 5P-PHs T101 FL601 JK102 C240 OPEN R239 FL TUBE OPEN FL SPACER(T=5) FL SPACER(T=5) R242 OPEN OPEN OPEN C603 CK0.1Z GND[D1-2] OPEN IC108 C242 +5V[D1-2] C604 OPEN C241 OPEN OPEN [2/3] IC108 OPEN [3/3] C243 OPEN IC602 GP1UM271XK +5V_D1 DIGITAL...
  • Page 38 EMIFIL TOFF LRSY +5V_D1 C225 CK0.1Z FB114 C139 EMIFIL CK1000P GND_D1-D C221 GND_D1 R162 100/16 C257 GND_D1-A CK0.1Z C104 CK0.1Z R161 R133 FB112 EMIFIL R179 R226 GND_D1-A 130K GND_D1 AS101 LRCK HEAT SINK GND_D1 LRCK ML/IIS R166 C165 DATA MCLK. C312 +8V_A GND_D1...
  • Page 39 C387 C385 100/16 1U-3346-2 MUTE C395 POWER UNIT R377 100P TM501 C4570C CK0.1Z EARTH_PLATE C391 C396 100P (2/2) C388 C386 100/16 R378 +B LINE - B LINE R376 3.9K SIGNAL LINE C389 CK0.1Z SCHEMATIC DIAGRAM ( for DCD-485 ) 1U-3346...
  • Page 40 SCHEMATIC DIAGRAM ( for DCD-685 ) DIGITAL CY052 R208 [COAXAL] 5P-PHs FB116 OPEN +5V_D2 T101 FL601 FB105 C240 JK102 OPEN R239 OPEN FL SPACER(T=5) FL TUBE FL SPACER(T=5) IC108 R242 OPEN FB118 OPEN FB102 [1/3] OPEN R155 C603 X101 OPEN X’TAL(8.4672MHz) FB121 FB123...
  • Page 41 SCHEMATIC DIAGRAM ( for DCD-685 ) DIGITAL CY052 R208 [COAXAL] 5P-PHs FB116 OPEN +5V_D2 T101 FL601 FB105 C240 JK102 OPEN R242 R239 OPEN FL SPACER(T=5) FL TUBE FL SPACER(T=5) IC108 OPEN FB118 OPEN R155 FB102 [1/3] OPEN C603 X101 OPEN X’TAL(8.4672MHz) FB121 FB123...
  • Page 42 SCHEMATIC DIAGRAM ( for DCD-685 ) R208 FB116 OPEN +5V_D2 T101 FB105 C240 OPEN IC108 R242 OPEN FB118 FB102 [1/3] OPEN R155 X101 OPEN FB121 X’TAL(8.4672MHz) FB123 C117 R131 R205 FB110 C185 R241 IC108 C150 100/16 OPEN OPEN C241 IC104 C196 C190 XOUT...
  • Page 43 DIGITAL CY052 [COAXAL] 5P-PHs T101 FL601 JK102 C240 OPEN R239 OPEN FL TUBE FL SPACER(T=5) FL SPACER(T=5) R242 OPEN OPEN OPEN C603 CK0.1Z GND[D1-2] OPEN IC108 C242 +5V[D1-2] C604 OPEN C241 OPEN OPEN [2/3] IC108 OPEN [3/3] C243 OPEN IC602 C248 GP1UM271XK +5V_D1...
  • Page 44 CK0.1Z FB114 C139 EMIFIL CK1000P GND_D1-D C221 GND_D1 R162 100/16 C257 GND_D1-A CK0.1Z C104 CK0.1Z R161 R133 FB112 EMIFIL R226 R179 GND_D1-A 130K GND_D1 AS101 LRCK HEAT SINK GND_D1 LRCK ML/IIS R166 C312 C165 DATA MCLK. +8V_A GND_D1 100P DATA OPEN TR106 MC/DM1...
  • Page 45 +5V[A1] 1P WIRE GND_A GND[A1] CY041B -5V_A OPEN -5V[A1-1] -5V_D1 -5V[D1] +5V_D1 GND_A +5V[D1] GND[D1] +5V_D2 +5V[D2] C311 +5V_A GND[D2] OPEN GND_D1 -8V_A -8V[A1-1] GND_D2 GND[D3-1] C312 MCLK. C321 +8V_A OPEN IC303 +8V[A1-1] OPEN MDATA. OPEN MCS. R305 R309 C319 OPEN OPEN 5V_D1...

This manual is also suitable for:

Dcd-685