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MODEL
We have two version of DN-C680. The new version of
DN-C680 is replaced discontinued parts of the old ver-
sion. (CD mechanism, microprocessor and D/A conver-
ter etc.)
Serial number of new version are renumbered from
*****50001.
This service manual is supplement for new version of
DN-C680 and only mentioned difference between old
and new version. So, please refer to previously issued
service manual of DN-C680 when servicing.
For purposes of improvement, specifications and
design are subject to change without notice.
Please use this service manual with referring to the
operating instructions without fail.
Some illustrations using in this service manual are
slightly different from the actual set.
SERVICE MANUAL
DN-C680
CD PLAYER
16-11, YUSHIMA 3-CHOME, BUNKYOU-KU, TOKYO 113-0034 JAPAN
DN-C680には新旧の2つのバージョンがあります。
旧バージョン(製造番号*****50000以前)で生産中止に
なった部品(CDメカ、マイコン等)を置き換えたものが
新バージョン(製造番号*****50001以降)です。
本書は、新バージョンで変更された内容のみを記載し
ていますので、サービスの際は本書と共に既発行のサ
ービスマニュアルDN-C680をご用意願います。
注 意
サービスをおこなう前に、このサービスマニュアルを
必ずお読みください。本機は、火災、感電、けがなど
に対する安全性を確保するために、さまざまな配慮を
おこなっており、また法的には「電気用品安全法」に
もとづき、所定の許可を得て製造されております。
従ってサービスをおこなう際は、これらの安全性が維
持されるよう、このサービスマニュアルに記載されて
いる注意事項を必ずお守りください。
 本機の仕様は性能改良のため、予告なく変更すること
 があります。
 新バージョン用の補修用性能部品の保有期間は、製造
 打切後8年です。
 修理の際は、必ず取扱説明書を参照の上、作業を行っ
 てください。
 本文中に使用しているイラストは、説明の都合上現物
 と多少異なる場合があります。
For U.S.A., Canada &
Europe model
Ver. 1
X0179V.01 DE/CDM 0308

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Table of Contents
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Summary of Contents for Denon DN-C680

  • Page 1 SERVICE MANUAL DN-C680 MODEL Ver. 1 CD PLAYER DN-C680には新旧の2つのバージョンがあります。 We have two version of DN-C680. The new version of 旧バージョン(製造番号*****50000以前)で生産中止に DN-C680 is replaced discontinued parts of the old ver- なった部品(CDメカ、マイコン等)を置き換えたものが sion. (CD mechanism, microprocessor and D/A conver- 新バージョン(製造番号*****50001以降)です。 ter etc.) Serial number of new version are renumbered from 本書は、新バージョンで変更された内容のみを記載し...
  • Page 2: Laser Radiation

    DN-C680 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

    DN-C680 BLOCK DIAGRAM ACD25 GU-3578-2 4M DRAM AN22002A ACD27 XCS05XL PCM1738 MN102H60KDA YM3437 RS-232C RS-232C GU-3578-1 HD26C32A RS-422A RS-422A M66005AFP HD26LS31FP GU-3578-3 +7V_D1 +3.3V_D1 +3.3V +5V_A2 FOR DSP, MECHA Not use +12V_A +16V_A NJM5532 +5V_A1 -12V_A NJM5532...
  • Page 4: Confirming The Servo

    DN-C680 CONFIRMING THE SERVO CAUTION: The Optical Pick-up used for CD player may invite defection by an external noise, such as electrostatic, etc., please pay the following attention. 1. Use a conductive mat on a working table to avoid electrostatic damage.
  • Page 5 DN-C680 2. What is Service Program Service program is a special program intended for confirming servo. 3. Contents of Service Program While simultaneously pushing the STANDBY/CUE and PLAY/PAUSE buttons, turn the power on. (TRACK Indication “00”) After actuating the service program, select an aiming process number with the SELECT KNOB, PITCH button, and TIME button, and push the PLAY/PAUSE button to execute processing, The process number is then displayed on the TRACK indication portion.
  • Page 6 DN-C680 Error Code Table (Appears only at Heat Run and Chucking Test function Error Code at TRACK portion Contents No. at m portion Contents Automatic Adjustment Error Unable to detect disc Unable to adjust tracking offset Unable to adjust focus offset...
  • Page 7 1) Connect VTVM to the output connector of DN-C680. Use 1:1 600 ohm Audio Transformer between the unit and VTVMs in order for matching the unbalanced input of VTVM and the active bakanced output of DN-C680 as shown in figure. Audio Transformer...
  • Page 8 DN-C680 SEMICONDUCTORS Only major semiconductors are shown, general semiconductors etc. are omitted to list. 主な半導体を記載しています。汎用の半導体は記載を省略しています。 1. IC’s Note : Abbreviation ahead of IC No. indicates the name of P.W.B., etc. 注 ) : IC No. の前の記号は、基板の名称を表します。 MA : Main P.W.B.
  • Page 9 DN-C680 Port Name Symbol Note Unfix Address bus Unfix Address bus Unfix Address bus Unfix Address bus Unfix Address bus AVdd AVdd Analog power supply(+3.3V) Unfix Address bus Unfix Address bus Unfix Address bus Unfix Address bus A16,P40 Unfix Address bus...
  • Page 10 DN-C680 Port Name Symbol Note PA2,-IRQ2 -SMIRQ ACD27(SMPTE option unit) control signal:Interrupt request PA3,-IRQ3 -TRSLA Track select signal input(interrupt) PA4,-IRQ4,TMI51B -TRSLB Track select inverted signal(interrupt) ADSEP ADSEP Mode select 'H':Address data separation mode -RST -RST Reset signal 'L':Reset Power supply(+3.3V)
  • Page 11 DN-C680 XCS05XL-5VQ100C (MA: IC112) XCS05XL-5VQ100C Terminal Function Port Name Symbol Note GND(0V) I/O,GCK1 Not used. Open -PRST Reset signal 'L':Reset(internal register cleared) I/O,TDI Not used. Open I/O,TCK Not used. Open I/O,TMS Not used. Open Read signal Write signal -CS1 Chip select signal...
  • Page 12 DN-C680 Port Name Symbol Note I/O(-INIT) -INIT FPGA(XCS05XL) control signal:-INIT Power supply(+3.3V) GND(0V) PDI5 Parallel port 'L':Forward search command input PDI6 Parallel port 'L':Reverse search command input PDI7 Parallel port 'L':Fader start command input PDI8 Parallel port(Reserved) PDI9 Parallel port(Reserved)
  • Page 13 DN-C680 Port Name Symbol Note Key matrix data bus Key matrix data bus Key matrix data bus Key matrix data bus Key matrix data bus Key matrix data bus Key matrix data bus Key matrix data bus(Not used) I/O,GCK8 Not used. Open Power supply(+3.3V)
  • Page 14 DN-C680 MN19412A (MA: IC126) MN19412A (Mecha Unit) (IC104) MN19412A Terminal Function Pin No. Symbol I/O/T Function N.C. Non connection. SOEN2 Output enable for serial output 2. SCKO2 Serial clock for serial output 2. SDO3 Data for serial output 3. WSO3 Word select for serial output 3.
  • Page 15 DN-C680 Pin No. Symbol I/O/T Function Write enable for external RAM. GND terminal (0V). GND terminal (0V). Data 7 for external RAM (Connect to D4~7 when one DRAM is used). Data 6 for external RAM. Data 5 for external RAM.
  • Page 16 DN-C680 MN662724 (MA: IC114) MN662724 Terminal Function Pin No. Symbol Function BCLK Bit clock output for SRDATA. LRCK L,R discrimination signal output. SRDATA Serial data output. DVDD1 Power supply for digital circuit. DVSS1 GND for digital circuit. Digital audio interface output signal.
  • Page 17 DN-C680 Pin No. Symbol Function Off track signal input ("H": off track). TRCRS Track cross signal input. RFDET RF detecting signal input ("L": detect). Drop out signal input ("H": drop out). LDON Laser ON signal output ("H": ON). PLLF2 Loop filter terminal for PLL.
  • Page 18 DN-C680 M66005AFP (DK: IC502) AN22002A (MA: IC110) CAGC ARF CBD0 BD0 C0FTR 0FTR 11 12 RFOUT 0FTR RF_EQ NRFDET 3TENV 3TOUT NRFDET FEOUT TEOUT TEBPF VDET VDET VREF...
  • Page 19 DN-C680 W29C020C-90B (MA: IC106) W29C020C-90B Terminal Function SYMBOL PIN NAME A0−A17 Address Inputs DQ0−DQ7 Data Inputs/Outputs Chip Enable Output Enable Write Enable Power Supply Ground No Connection PCM1738-1 (MA: IC123) PCM1738-1 Terminal Function Pin No. Pin Name Function Reset ZEROL...
  • Page 20 DN-C680 AN8389 (MA: IC111) BLT Linear BLT Linear BLT Linear BLT Linear Driver Driver Driver Driver thermal Absolute Absolute Absolute Absolute Protect Direction Direction Direction Direction Monitor VREF Monitor RESET AN8389 Terminal Function Pin No. Symbol Function Power supply. VREF VREF input terminal.
  • Page 21 DN-C680 SN74HCT244APW (MA: IC118,121,124,134-136,140,141) logic symbol Function Table INPUTS OUTPUT µ SN74LV245APW (MA: IC102,103,107,127) µPD4721GS (MA: IC811) DiR 1 A0 2 A1 3 A2 4 STBY A3 5 300ohm A4 6 OUT1 300ohm A5 7 OUT2 A6 8 OUT1 5.5kohm...
  • Page 22 DN-C680 MM74HC4053SJ (MA: IC117) SN74HC157NS (MA: IC130) SELECT IN/OUT STROBE OUT/IN INPUTS INPUTS OUT/IN OUTPUT IN/OUT IN/OUT OUTPUT INPUTS INPUTS OUTPUT OUTPUT HD74HC74FP (MA: IC122) BA6287F (MA: IC105) 1CLR 14 V 2CLR 2. FL DISPLAY BJ528GK (FL501) (Part No: 393 8024 003) P i n C o n n e c t i o n P i n N o .
  • Page 23 DN-C680 G R I D A S S I G N M E N T D A T E A N O D E C O N N E C T I O N 1 - 1 2 - 1...
  • Page 24 DN-C680 A N O D E C O N N E C T I O N 1 G ~ 1 2 G 1 3 G 1 4 G 1 5 G 1 6 G 1 7 G 1 8 G 1 9 G —...
  • Page 25 DN-C680 PRINTED WIRING BOARDS GU-3001 DISPLAY/KEY P.W.B. UNIT COMPONENT SIDE...
  • Page 26 DN-C680 FOIL SIDE...
  • Page 27 DN-C680 GU-3578 MAIN P.W.B. UNIT COMPONENT SIDE...
  • Page 28 DN-C680 FOIL SIDE...
  • Page 29: Note For Parts List

    DN-C680 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 30: Parts List Of P.w.b. Unit

    DN-C680 PARTS LIST OF P.W.B. UNIT *本表に記載されている部品は、補修用部品のため製品に使用している部品とは一部、形状、寸法などが異なる場合があります GU-3001B DISPLAY/KEY P.W.B. UNIT ASS'Y Ref.No. Part No. Part Name Remarks Q'ty SEMICONDUCTORS GROUP IC502 262 3228 908 M66005AFP IC503 262 1708 909 TC74HC138AF(TP1) IC504 262 2367 909 NJU3715G (T1) TR401,402 269 0107 900...
  • Page 31 DN-C680 Ref.No. Part No. Part Name Remarks Q'ty OTHER PARTS GROUP CW051 203 8273 014 5P KR-DS CON CORD CW052 203 8224 018 5P PH-SAN CON CORD CW071 204 2382 001 7P KR-DS CON.CORD CW091 204 2747 015 9P EH-SCN CONN CORD...
  • Page 32 DN-C680 GU-3578 MAIN P.W.B. UNIT ASS'Y Ref.No. Part No. Part Name Remarks Q'ty SEMICONDUCTORS GROUP IC102,103 262 2640 901 SN74LV245APW-EL2 IC104 262 2514 901 SN74LV138APW-EL2 IC105 263 0994 908 BA6287F-E2 IC106 GEN 6509 IC106 ROM SUB ASS'Y W29C020C-90B IC107 262 2640 901...
  • Page 33 DN-C680 Ref.No. Part No. Part Name Remarks Q'ty TR411 273 0178 912 2SC1740(S)T-70 TR412 272 0083 004 2SB1185(E/F) TR413 269 0107 900 RN1241(A/B)TPE4 D101-104 276 0438 910 MA151A (TAPE) D405 276 0432 903 1SS270A TE (TAPE) D407,408 276 0438 910...
  • Page 34 DN-C680 Ref.No. Part No. Part Name Remarks Q'ty C135 257 0512 903 CK73F1E104ZT C136 257 0516 909 CK73B1E223KT C137 257 0507 950 CC73CH1H271JT C138 257 0511 904 CK73F1H103ZT C139 257 0506 935 CC73CH1H820JT C140 257 0510 934 CK73B1H472KT C141 257 0512 903...
  • Page 35 DN-C680 Ref.No. Part No. Part Name Remarks Q'ty C210 257 0503 925 CC73CH1H100DT C216-218 257 0507 976 CC73CH1H331JT C219 257 0512 903 CK73F1E104ZT C220 257 0511 904 CK73F1H103ZT C221 257 0507 976 CC73CH1H331JT C222 257 0512 903 CK73F1E104ZT C224 257 0509 945...
  • Page 36 DN-C680 Ref.No. Part No. Part Name Remarks Q'ty C309-313 254 4541 939 CE04W1E470MT SMG/RE3 C314 254 4536 928 CE04W1A101MT SMG/RE3 C315 254 4541 939 CE04W1E470MT SMG/RE3 C316 254 4536 928 CE04W1A101MT SMG/RE3 C317,318 254 4541 939 CE04W1E470MT SMG/RE3 C319 254 4538 900...
  • Page 37 DN-C680 Ref.No. Part No. Part Name Remarks Q'ty C803 257 0509 929 CK73B1H102KT C804 257 0512 903 CK73F1E104ZT C805 257 0511 904 CK73F1H103ZT C806 257 0512 903 CK73F1E104ZT C807 257 0509 929 CK73B1H102KT C808 257 0511 904 CK73F1H103ZT C809 257 0509 929...
  • Page 38 DN-C680 Ref.No. Part No. Part Name Remarks Q'ty CY251 205 1052 018 25P FFC BASE (9604F) FB101-110 235 0130 903 CHIP EMIFIL(11A121) FB111 235 0049 900 BEADS INDUCTOR TAPE FB113 235 0049 900 BEADS INDUCTOR TAPE FB114-116 235 0130 903...
  • Page 39: Exploded View

    DN-C680 EXPLODED VIEW WARNING: Parts marked with this symbol have critical Parts List characteristics. Use ONLY replacement parts recommended by the manufacturer.  印の部分は安全を維持するために重要 な部品です。従って交換時は必ず指定の 部品を使用してください。...
  • Page 40: Parts List Of Exploded View

    DN-C680 PARTS LIST OF EXPLODED VIEW *本表に記載されている部品は、補修用部品のため製品に使用している部品とは一部、形状、寸法などが異なる場合があります。 Note: The symbols in the column "Remarks" indicate the following destinations. E3: U.S.A. & Canada model E2: Europe model Ref.No. Part No. Part Name Remarks Q'ty GU-3578 MAIN PWB UNIT ASS'Y MAIN UNIT...
  • Page 41 DN-C680 Ref.No. Part No. Part Name Remarks Q'ty 513 3946 007 RATING SHEET for E3 513 3946 010 RATING SHEET for E2 513 2521 009 CE LABEL for E2 513 2303 007 VERSION LABEL 513 0985 003 INST LABEL for E2...
  • Page 42: Exploded View Of Cd Mechanism Unit (Cd11Fta3N)

    DN-C680 EXPLODED VIEW OF CD MECHANISM UNIT (CD11FTA3N) PARTS LIST OF CD MECHANISM UNIT Ref. No. Part No. Part Name Remarks Q'ty Ref. No. Part No. Part Name Remarks Q'ty 1 964 0009 006 Frame chassis 11 964 0010 008 Mecha lifter...
  • Page 43: Packing View

    DN-C680 PACKING VIEW 203 ~ 206 PARTS LIST OF PACKING & ACCESSORIES *本表に記載されている部品は、補修用部品のため製品に使用している部品とは一部、形状、寸法などが異なる場合があります。 Note: The symbols in the column "Remarks" indicate the following destinations. E3: U.S.A. & Canada model E2: Europe model Ref.No. Part No. Part Name Remarks Q'ty 505 8092 007...
  • Page 44: Wiring Diagram

    DN-C680 WIRING DIAGRAM LDIN GND_A3 LDOUT LOAD+ LOAD- GU-3578-1 GU-3578-2 SLED+ SLED- LIMITSW+ LIMITSW- VREF1 CY104 CY072 10P EH 7P EH 10P EH 7P EH CX104 CX072 GU-3578-3...
  • Page 45: Note For Schematic Diagram

    DN-C680 NOTE FOR SCHEMATIC DIAGRAM 配線図について WARNING: ! 印の部品は安全を維持するために重要な部品です。 Parts marked with this symbol ! have critical characteristics. 従って交換時は必ず指定の部品を使用してください。 Use ONLY replacement parts recommended by the manufactur- 注) CAUTION: (1) 指定なき抵抗値は Ω、k は kΩ、M は MΩ を示す。 Before returning the unit to the customer, make sure you make (2) 指定なきコンデンサーの値は...
  • Page 46 DN-C680 SCHEMATIC DIAGRAMS (1/4) SIGNAL LINE SCHEMATIC DIAGRAMS (1/4) GU-3578-1 MAIN UNIT...
  • Page 47 DN-C680 SCHEMATIC DIAGRAMS (2/4) SIGNAL LINE SCHEMATIC DIAGRAMS (2/4) GU-3578-2 DIGITAL I/F UNIT...
  • Page 48 DN-C680 SCHEMATIC DIAGRAMS (3/4) SIGNAL LINE SCHEMATIC DIAGRAMS (3/4) GU-3578-3 AUDIO UNIT...
  • Page 49 DN-C680 SCHEMATIC DIAGRAMS (4/4) SCHEMATIC DIAGRAMS (4/4) GU-3001-1 KEY LED UNIT GU-3001-2 FLT UNIT GU-3001-3 H/P UNIT GU-3001-4 JOG SHUTTLE UNIT GU-3001-6 SELECT SW UNIT SIGNAL LINE GU-3001-7 TRANS UNIT...

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