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Denon DVM725 Service Manual
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Denon DVM725 Service Manual

Denon DVM725 Service Manual

Dvd video auto changer
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3 7 63 1515 0
TE
L 13942296513
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.
www
.
http://www.xiaoyu163.com
SERVICE MANUAL
MODEL
DVD VIDEO AUTO CHANGER
x
ao
u163
y
i
Denon Brand Company, D&M Holdings Inc.
http://www.xiaoyu163.com
2 9
8
For U.S.A. & Canada model
DVM725
Q Q
3
6 7
1 3
1 5
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。
 
 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。
 
co
.
TOKYO, JAPAN
9 4
2 8
Ver. 1
Please refer to the
MODIFICATION NOTICE.
0 5
8
2 9
9 4
2 8
m
X0293V.01 DE/CDM 0606
9 9
9 9

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Summary of Contents for Denon DVM725

  • Page 1  修理の際は、必ず取扱説明書を参照の上、作業を行っ ● operating instructions without fail.  てください。   Some illustrations using in this service manual are ●  本文中に使用しているイラストは、説明の都合上現物 ● slightly different from the actual set.  と多少異なる場合があります。   u163 TOKYO, JAPAN Denon Brand Company, D&M Holdings Inc. X0293V.01 DE/CDM 0606 http://www.xiaoyu163.com...

  • Page 2: Laser Radiation

    DVM725 3 7 6 3 1 5 1 5 0 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: Specifications

    DVM725 3 7 63 1515 0 SPECIFICATIONS Item Conditions Unit Nominal Limit 75 Ω load 1. Video Output ± 0.1 2. Optical Digital Out 3. Audio (PCM) 3-1. Output Level 1 kHz, 0 dB Vrms 3-2. S/N 3-3. Freq. Response fs = 48 kHz, 20 Hz ~ 22 kHz ±...
  • Page 4 DVM725 3 7 63 1515 0 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 5 DVM725 3 7 63 1515 0 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.
  • Page 6 DVM725 3 7 63 1515 0 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 7 DVM725 3 7 63 1515 0 With Iron Wire: 2. Installation 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 8 DVM725 3 7 63 1515 0 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 9: Disassembly Method

    DVM725 3 7 63 1515 0 CABINET DISASSEMBLY INSTRUCTIONS 1. Disassembly Flowchart REMOVAL REMOVE/*UNHOOK/ LOC. PART Fig. This flowchart indicates the disassembly steps to gain UNLOCK/RELEASE/ Note access to item(s) to be serviced. When reassembling, UNPLUG/DESOLDER follow the steps in reverse order. Bend, route, and dress the cables as they were originally.
  • Page 10 DVM725 3 7 63 1515 0 (1): Identification (location) No. of parts in the figures (2): Name of the part (S-2) (L-1) (3): Figure Number for reference (4): Identification of parts to be removed, unhooked, unlocked, released, unplugged, unclamped, or (L-1) desoldered.
  • Page 11 DVM725 3 7 63 1515 0 Drive Mechanism CN5003 Short the three short lands by soldering CN5002 [9] Sensor CBA CN5005 (S-6) [8] Relay (S-5) Fig. D6 (S-7) [10] Rear Panel (S-8) View for A (S-7) (S-8) (S-7) L 13942296513...
  • Page 12 DVM725 3 7 63 1515 0 (S-15) (S-15) Clamper [11] Tray Guide (L) (S-9) (S-15) CN3102 [12] Tray Guide (S-14) (R) Unit CN3301 (S-10) CN1001 (S-14) CN1601 [19] Changer CBA [20] AV CBA CN3003 CN3004 Fig. D10 Fig. D8...

  • Page 13: Troubleshooting

    DVM725 3 7 63 1515 0 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 shor-circuiting on the power cord is plugged again after several seconds? primary circuit component, and service it if defective.
  • Page 14 DVM725 3 7 63 1515 0 FLOW CHART NO.6 P-ON+9V (EV+9V) is not outputted. Check D1030, C1035, C1048, L1009 and Is 9V voltage supplied to the emitter of Q1002? the periphery circuit, and service it if defective. Check Q1016 and service it if defective.
  • Page 15 DVM725 3 7 63 1515 0 FLOW CHART NO.12 The fluorescent display tube does not light up. Is 3.3V voltage supplied to Pin(6) and Check the P-ON+3.3V line and service it if defective. Pin(24) of IC2001? Is the voltage of approximately -24V to -28V Check the -FL (-28V) line and service it if defective.
  • Page 16 DVM725 3 7 63 1515 0 FLOW CHART NO.14 No operation is possible from the remote control unit. Operation is possible from the DVD, but no operation is possible from the remote control unit. Is 5V voltage supplied to the Pin(3) terminal of Check EV+5V line and service it if defective.
  • Page 17 DVM725 3 7 63 1515 0 FLOW CHART NO.18 [No Disc] indicated. (When the focus servo is not functioning.) Replace the DVD Main CBA Unit. No improvement can be found. Original DVD Main CBA Unit is poor. Replace the DVD Mechanism.
  • Page 18 DVM725 3 7 63 1515 0 FLOW CHART NO.21 Picture does not appear normally. Set the disc on the disc tray, and playback. Replace the DVD Main CBA Unit or DVD Mechanism. Are the video signals outputted to each pin of...
  • Page 19 DVM725 3 7 63 1515 0 FLOW CHART NO.22 Audio is not outputted. 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...
  • Page 20 DVM725 3 7 63 1515 0 FLOW CHART NO.23 Rotary tray does not function. Is the normal control voltage inputted to pins Check the switches (SW2206 - 2208, 2210 - 2212) (39, 40, 41) of IC3001? For each terminal voltage, and their periphery, and service it if defective.
  • Page 21 DVM725 3 7 63 1515 0 BLOCK DIAGRAMS System Control / Servo Block Diagram L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 22 DVM725 Digital Signal Process Block Diagram 3 7 63 1515 0 L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 23 DVM725 Video / Audio Block Diagram 3 7 63 1515 0 L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 24 DVM725 3 7 63 1515 0 Power Supply Block Diagram L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 25 DVM725 3 7 63 1515 0 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 26 DVM725 3 7 63 1515 0 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 27 DVM725 3 7 6 3 1 5 1 5 0 DVD Main 1/3 Schematic Diagram 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 http://www.xiaoyu163.com...
  • Page 28 DVM725 3 7 6 3 1 5 1 5 0 DVD Main 2/3 Schematic Diagram 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 http://www.xiaoyu163.com...
  • Page 29 DVM725 3 7 6 3 1 5 1 5 0 IC101 Voltage Chart 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 30 DVM725 3 7 6 3 1 5 1 5 0 DVD Main 3/3 Schematic Diagram 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 http://www.xiaoyu163.com...
  • Page 31 DVM725 3 7 6 3 1 5 1 5 0 AV 1/2 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.
  • Page 32 DVM725 3 7 6 3 1 5 1 5 0 AV 2/2 Schematic Diagram AV 2/2 Schematic Diagram 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 http://www.xiaoyu163.com...
  • Page 33 DVM725 3 7 6 3 1 5 1 5 0 Changer 1/2 , Function , Power Switch & Switch Schematic Diagram 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3...
  • Page 34 DVM725 3 7 6 3 1 5 1 5 0 Changer 2/2 Schematic Diagram FL2001 MATRIX CHART STANDBY TITLE CHP. TRK. REPEAT STANDBY REPEAT TITLE CHP. TRK. 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 http://www.xiaoyu163.com...
  • Page 35 DVM725 3 7 6 3 1 5 1 5 0 Relay , Sensor , Drive , FG & Pick Up Unit Schematic Diagram 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3...
  • Page 36 DVM725 3 7 63 1515 0 WAVEFORMS Pin 7 of CN1601 Pin 15 of CN1601 AUDIO(R) 0.5V 0.5ms VIDEO-Y 0.2V 20µs Pin 9 of CN1601 Pin 18 of CN1601 L 13942296513 VIDEO-C 0.2V 20µs SPDIF 0.1µs C1402 PLUS LEAD...
  • Page 37 DVM725 3 7 63 1515 0 WIRING DIAGRAM L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 38 DVM725 3 7 63 1515 0 FIRMWARE RENEWAL MODE 1. Turn the power on and remove the disc on the tray. 5. After programming is finished, the tray opens auto- 2. To put the DVD player into version up mode, press matically.
  • Page 39 DVM725 3 7 63 1515 0 LEAD IDENTIFICATIONS 2SK3374 DTC114ESA TP 2SA1815-(GR)(TE2 F T) 2SA1015-Y(TE2 F T) 2SA966-Y(TE6 F M) KRA110M-AT/P KTC3198-Y-AT/P KTA1266-Y-AT/P KTC3205-Y-AT/P KTA1267-Y-AT/P KTA1273-Y-AT/P KTC3199-GR-AT/P S D G E C B E C B PT6313-S-TP(L) PT204-6B-12 SC16313G...
  • Page 40 DVM725 3 7 63 1515 0 EXPLODED VIEWS EXPLODED VIEWS Cabinet 1 Cabinet 1 2L021 2L021 2L021 2L021 See Electrical Parts List See Electrical Parts List for parts with this mark. for parts with this mark. 2L021 2L021 2L021 2L021 Some Ref.
  • Page 41 DVM725 3 7 63 1515 0 Cabinet 2 Cabinet 2 B1-30 B1-30 B1-30 B1-30 B1-26 B1-26 L1-6 L1-6 B1-2 B1-2 B1-41 B1-41 B1-24 B1-24 B1-22 B1-43 B1-22 B1-43 B1-46 B1-46 B1-42 B1-24 B1-42 B1-24 B1-3 B1-3 B1-20 B1-20 B1-19...
  • Page 42 DVM725 DVM725 PARTS LIST OF EXPLODED VIEW 3 7 63 1515 0 ※ 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。 ※ The parts listed below are for maintenance only, might differ from the parts used in the unit in appearances or dimensions. Ref. No. PartNo.
  • Page 43 DVM725 3 7 63 1515 0 Ref. No. PartNo. Part Name Remarks Q'ty New SCREWS 1L016 SCREW TAP TIGHT WASHER+ P-TIGHT GCJP3080 1L017 SCREW P-TIGHT 3X12 WASHER HEAD+ GCJP3120 1L023 SCREW SEMS M2.6X4 PAN HEAD+ CPJ39040 2L011 SCREW C-TIGHT M3X6 BIND HEAD+...
  • Page 44 DVM725 PACKING 3 7 63 1515 0 Packing L 13942296513 Unit u163 http://www.xiaoyu163.com...
  • Page 45 DVM725 DMV725 PARTS LIST OF PACKING & ACCESSORIES 3 7 63 1515 0 ※ 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。 ※ The parts listed below are for maintenance only, might differ from the parts used in the unit in appearances or dimensions.. Ref. No.