1. Manuals
  2. Brands
  3. Denon Manuals
  4. DVD Player
  5. DVD-1720/556
  6. Service manual

Denon DVD-1720/556 Service Manual

Dvd video player denon dvd-1720/556
Hide thumbs
Table of Contents

Advertisement

Quick Links

MODEL
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
DVD-1720/556
DVD VIDEO PLAYER
TOKYO, JAPAN
Denon Brand Company, D&M Holdings Inc.
For U.S.A. & Canada model
Ver. 2
X0246 V.02 DE/CDM 0508

Advertisement

Table of Contents
loading

Related Manuals for Denon DVD-1720/556

Summary of Contents for Denon DVD-1720/556

  • Page 1 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. TOKYO, JAPAN Denon Brand Company, D&M Holdings Inc. X0246 V.02 DE/CDM 0508...

  • Page 2: Table Of Contents

    DVD-1720/556 TABLE OF CONTENTS SPECIFICATIONS ............... . . 3 LASER BEAM SAFETY PRECAUTIONS .

  • Page 3: Specifications

    DVD-1720/556 SPECIFICATIONS Item Conditions Unit Nominal Limit 75 Ω load 1. Video Output ± 0.1 75 Ω load 2. Coaxial Digital Out mVpp ± 50 3. Audio (PCM) 1 kHz, 0 dB, 47k Ω load 3-1. Output Level Vrms 47k Ω load 3-2.

  • Page 4: Laser Beam Safety Precautions

    DVD-1720/556 LASER BEAM SAFETY PRECAUTIONS This DVD player uses a pickup that emits a laser beam. Do not look directly at the laser beam coming from the pickup or allow it to strike against your skin. The laser beam is emitted from the location shown in the figure. When checking the laser diode, be sure to keep your eyes at least 30 cm away from the pickup lens when the diode is turned on.

  • Page 5: Important Safety Precautions

    DVD-1720/556 IMPORTANT SAFETY PRECAUTIONS Product Safety Notice Also check areas surrounding repaired locations. J. Be careful that foreign objects (screws, solder Some electrical and mechanical parts have special droplets, etc.) do not remain inside the set. safety-related characteristics which are often not K.

  • Page 6: Safety Check After Servicing

    DVD-1720/556 Safety Check after Servicing Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts, and wires have been returned to their original positions. Afterwards, do the following tests and confirm the specified values to verify compliance with safety standards.

  • Page 7: Standard Notes For Servicing

    DVD-1720/556 STANDARD NOTES FOR SERVICING Circuit Board Indications Pb (Lead) Free Solder 1. The output pin of the 3 pin Regulator ICs is When soldering, be sure to use the Pb free solder. indicated as shown. How to Remove / Install Flat Pack-IC...
  • Page 8 DVD-1720/556 3. The flat pack-IC on the CBA is affixed with glue, so With Soldering Iron: be careful not to break or damage the foil of each 1. Using desoldering braid, remove the solder from pin or the solder lands under the IC when all pins of the flat pack-IC.
  • Page 9 DVD-1720/556 2. Installation With Iron Wire: 1. Using desoldering braid, remove the solder from 1. Using desoldering braid, remove the solder from all pins of the flat pack-IC. When you use solder the foil of each pin of the flat pack-IC on the CBA...
  • Page 10 DVD-1720/556 Instructions for Handling Semi- conductors Electrostatic breakdown of the semi-conductors may occur due to a potential difference caused by electrostatic charge during unpacking or repair work. 1. Ground for Human Body Be sure to wear a grounding band (1 MΩ) that is properly grounded to remove any static electricity that may be charged on the body.

  • Page 11: Cabinet Disassembly Instructions

    DVD-1720/556 CABINET DISASSEMBLY INSTRUCTIONS 1. Disassembly Flowchart This flowchart indicates the disassembly steps to gain Removal access to item(s) to be serviced. When reassembling, Remove/*Unhook/ follow the steps in reverse order. Bend, route, and Loc. Part Fig. Unlock/Release/ Note dress the cables as they were originally.
  • Page 12 DVD-1720/556 Reference Notes 1. CAUTION 1: Locking Tabs (L-1), (L-2), (L-3) and (L-4) are fragile. Be careful not to break them. [3] Tray Panel 1) Release two Locking Tabs (L-1), then release (L-4) two Locking Tabs (L-2). (L-4) 2) Release three Locking Tabs (L-3).
  • Page 13 DVD-1720/556 DVD1720BKE3/ (S-6) (S-6) DVD1720SRE3 only [6] Rear Panel (S-4) (S-3) (S-3) [8] DVD Mechanism Fig. D4 Fig. D6 (S-7) (S-5B) (S-7) (S-5A) (S-8) CN201 CN601 [9] LED CBA CN301 CN401 [7] DVD Main CBA Unit CN2102 [10] AV CBA Fig.
  • Page 14 DVD-1720/556 (S-9) (S-9) [12] Power [11] Loader Base PCB Holder (S-10) Fig. D8 3. How to Eject Manually 1. Remove the Top Cover. 2. Rotate the roulette in the direction of the arrow as shown below. View for A Rotate this roulette in...

  • Page 15: How To Initialize The Dvd Player

    DVD-1720/556 HOW TO INITIALIZE THE DVD PLAYER To put the program back at the factory-default, initialize the DVD player as the following procedure. 1. Press [1], [2], [3], [4], and [DISPLAY] buttons on the remote control unit in that order.

  • Page 16: Firmware Renewal Mode

    DVD-1720/556 FIRMWARE RENEWAL MODE 1. Turn the power on and remove the disc on the 5. After programming is finished, the tray opens tray. automatically. Fig. e appears on the screen and the checksum in (*2) of Fig. e appears on the VFD 2.
  • Page 17 DVD-1720/556 10. Press [CLEAR] button on the remote control unit. Fig. h appears on the screen. " ******* " differ depending on the models. MODEL : ******* Version : *.** Region : * EEPROM CLEAR : OK EEPROM CLEAR : CLEAR EXIT: POWER Fig.

  • Page 18: Troubleshooting

    DVD-1720/556 TROUBLESHOOTING FLOW CHART NO.1 The power cannot be turned on. See FLOW CHART No.2 <The fuse blows out.> Is the fuse normal? Is normal state restored when once unplugged Check if there is any leak or short-circuiting on the power cord is plugged again after several seconds? primary circuit component, and service it if defective.
  • Page 19 DVD-1720/556 FLOW CHART NO.6 P-ON+10V (EV+11V) is not outputted. Is 11V voltage supplied to the emitter of Q1002? Check D1030, D1048, C1035, C1048, L1009, and the periphery circuit, and service it if defective. Check Q1016 and PWRCON line and service it if Is the voltage of base on Q1002 lower than the defective.
  • Page 20 DVD-1720/556 FLOW CHART NO.11 The fluorescent display tube does not light up. Is 3.3V voltage supplied to Pins(6,24) of IC2001? Check the EV+3.3V line and service it if defective. Is the voltage of approximately -20V supplied to Check the -FL (-20V) line and service it if defective.
  • Page 21 DVD-1720/556 FLOW CHART NO.14 The disc tray cannot be opened and closed. (It can be done using the remote control unit.) Replace the "OPEN/CLOSE" button (SW2108). Is the normal control voltage inputted to Pin(4) of IC2001? Refer to "FLOW CHART NO.12" <The key operation is not functioning.>...
  • Page 22 DVD-1720/556 FLOW CHART NO.19 Both functions of picture and sound do not operate normally. Replace the DVD Main CBA Unit. Original DVD Main CBA Unit is poor. No improvement can be found. Replace the DVD Mechanism. FLOW CHART NO.20 Picture does not appear normally.
  • Page 23 DVD-1720/556 FLOW CHART NO.21 Audio is not outputted normally. Set the disc on the disc tray, and playback. Replace the DVD Main CBA Unit or DVD Mechanism. Are the analog audio signals outputted to each pin of CN1601 on AV CBA?

  • Page 24: Block Diagrams

    DVD-1720/556 BLOCK DIAGRAMS System Control / Servo Block Diagram...
  • Page 25 DVD-1720/556 Digital Signal Process Block Diagram...
  • Page 26 DVD-1720/556 Video / Audio Block Diagram...
  • Page 27 DVD-1720/556 Power Supply Block Diagram...

  • Page 28: Schematic Diagrams / Cba's And Test Points

    DVD-1720/556 SCHEMATIC DIAGRAMS / CBA’S AND TEST POINTS Standard Notes WARNING Many electrical and mechanical parts in this chassis have special characteristics. These characteristics often pass unnoticed and the protection afforded by them cannot necessarily be obtained by using replacement components rated for higher voltage, wattage, etc.
  • Page 29 DVD-1720/556 LIST OF CAUTION, NOTES, AND SYMBOLS USED IN THE SCHEMATIC DIAGRAMS ON THE FOLLOWING PAGES: 1. CAUTION: FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE SAME TYPE FUSE. ATTENTION: POUR UNE PROTECTION CONTINUE LES RISQES D'INCELE N'UTILISER QUE DES FUSIBLE DE MÊME TYPE.
  • Page 30 DVD-1720/556 DVD Main 1/3 Schematic Diagram 1 NOTE: Either IC461 or IC462 is used for DVD MAIN CBA UNIT.
  • Page 31 DVD-1720/556 DVD Main 2/3 Schematic Diagram...
  • Page 32 DVD-1720/556 IC101 Voltage Chart ~ : Voltage is not consistent ----- : Not used Unit : Volts PIN.NO PLAY STOP PIN.NO PLAY STOP PIN.NO PLAY STOP PIN.NO PLAY STOP PIN.NO PLAY STOP PIN.NO PLAY STOP PIN.NO PLAY STOP PIN.NO PLAY STOP...
  • Page 33 DVD-1720/556 DVD Main 3/3 Schematic Diagram...
  • Page 34 DVD-1720/556 AV 1/3 Schematic Diagram CAUTION ! For continued protection against fire hazard, CAUTION ! replace only with the same type fuse. Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. NOTE: ATTENTION : Pour une protection continue les risqes...
  • Page 35 DVD-1720/556 AV 2/3 Schematic Diagram...
  • Page 36 DVD-1720/556 AV 3/3, Function & LED Schematic Diagram FL2001 MATRIX CHART SACD PSCAN REPEAT GROUP TITLE SACD REPEAT TITLE GROUP PSCAN HD VCD...

  • Page 37: Waveforms

    DVD-1720/556 WAVEFORMS Pin 8 of CN1601 Pin 15 of CN1601 AUDIO(R) 0.5ms VIDEO-Y 0.1V 20µs Pin 10 of CN1601 Pin 18 of CN1601 VIDEO-C 0.1V 20µs SPDIF 0.1µs C1402 PLUS LEAD NOTE: Input CD: 1kHz PLAY (WF4~WF6) DVD: POWER ON (STOP) MODE VIDEO-CVBS 0.5V...

  • Page 38: Wiring Diagram

    DVD-1720/556 WIRING DIAGRAM P-ON+5V 20 CD/DVD 19 D 18 A 17 C 16 B 15 E 14 VREF 13 VIDEO-Y(I) F 12 VIDEO-Cr/Pr GND 11 CD-LD 10 VIDEO-Cb/Pb GND(LD) 9 DVD-LD 8 VIDEO-Y(I/P) PD-MONI 7 GND(DVD-PD) 6 VIDEO-C GND(CD-PD) 5...

  • Page 39: Lead Identifications

    DVD-1720/556 LEAD IDENTIFICATIONS 2SC1815-GR(TE2 F T) 2SA1015-Y(TE2 F T) 2SC1815-GR(TPE2) 2SA1015-Y(TPE2) KTA1267(Y) 2SC2120-Y(TE2 F T) KTA1267Y-AT/P 2SC2120-Y(TPE2) KTC3199(GR) 2SC2236-Y-TPE6 C KTC3199-GR-AT/P KTA1266(Y) KRA110M-AT/P KTA1266-Y-AT/P KRA110M KTC3203(Y) BN1L3Z(P) KTC3203-Y-AT/P KTC3205(Y) KTC3205-Y-AT/P E C B E C B KIA4558P KIA4558P/P RC4580IP FAN431AZXA...

  • Page 40: Exploded Views

    DVD-1720/556 EXPLODED VIEWS Cabinet 2L011 See Electrical Parts List for parts with this mark. 2L011 2L011 Some Ref. Numbers are not in sequence. 2L011 2L011 2L021 2L021 [A, B] 2L021 2L106 JK3501 2L105 2L106 DVD Main CBA Unit JK1401 JK1404...
  • Page 41 DVD-1720/556 Packing Unit...

  • Page 42: Mechanical Parts List

    Don't degrade the safety of the product Model Mark through improper servicing. DVD1720BKE3 DVD1720SRE3 DVD556SRE3 Ref. No. Mark Description Funai Parts No. DENON Parts No. MECHANICAL PARTS FRONT ASSEMBLY 1VM220489 00D9H2 6000 628 FRONT ASSEMBLY 1VM220620 00D9H2 6000 629 FRONT ASSEMBLY 1VM220658 00D9H2 6000 630...
  • Page 43 DVD-1720 Ref. No. Mark Description Funai Parts No. DENON Parts No. DRY BATTERY ES-GR6M-C XB0M571GLP01 ACCESSORY BAG E5795ED 0VM416059 AV CORD TSCKA-Y/RW100 WPZ0102TM015 00D9H2 6000 226 AV CORD RCA(M*2)TO RCA(M*2) WPZ0102LTE01 AV CORD DC2FN020001 WPZ0102CAB01 OWNERS MANUAL 1VMN21036 00D9H2 6000 637...

This manual is also suitable for:

Dvd-1920

Table of Contents