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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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(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...
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 .
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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.
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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.
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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.
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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.
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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...
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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...
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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.
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Terminal Port Function − − − P04/XT1 P. DG Not used (Connect to GND) − − − − − − Not used (Open) − − − − − − − − − − Main system clock input − − − −...
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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...
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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...
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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...
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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)
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.
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...
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WARNING: Parts marked with this symbol have critical characteristics. Use ONLY replacement parts recommended by the manufacturer.
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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...
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EXPLODED VIEW OF CD MECHANISM UNIT KSL 2130 CCM 1 2 - 1 1 2 - 2...
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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...