For U.S.A. & Canada model SERVICE MANUAL MODEL DVM725 Ver. 1 Please refer to the MODIFICATION NOTICE. DVD VIDEO AUTO CHANGER 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。 ● For purposes of improvement, specifications and design are subject to change without notice.
DVM725 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. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the power cord is less than 460 kohms, the unit is defective.
DVM725 SPECIFICATIONS Item 1. Video Output Conditions 75 Ω load 2. Optical Digital Out Unit Nominal Limit Vpp 1.0 ± 0.1 dBm -18 Vrms 2.0 dB 120 3. Audio (PCM) 3-1. Output Level 1 kHz, 0 dB 3-2. S/N 3-3. Freq. Response DVD fs = 48 kHz, 20 Hz ~ 22 kHz dB ± 0.5 CD fs = 44.1 kHz, 20 Hz ~ 20 kHz dB ± 0.5 DVD 1 kHz, 0 dB % 0.003 CD 1 kHz, 0 dB % 0.003 3-4. THD+N Notes: 1. All Items are measured without pre-emphasis unless otherwise specified. 2. Power supply: AC 120 V, 60 Hz 3.
DVM725 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. 1. Clearance Distance When replacing primary circuit components, confirm specified clearance distance (d) and (d’) between soldered terminals, and between terminals and surrounding metallic parts.
DVM725 STANDARD NOTES FOR SERVICING Circuit Board Indications Pb (Lead) Free Solder 1. The output pin of the 3 pin Regulator ICs is indicated as shown. When soldering, be sure to use the Pb free solder. How to Remove / Install Flat Pack-IC Top View Out Bottom View In 1. Removal Input With Hot-Air Flat Pack-IC Desoldering Machine: 1. Prepare the hot-air flat pack-IC desoldering machine, then apply hot air to the Flat Pack-IC (about 5 to 6 seconds). (Fig. S-1-1) 2.
DVM725 With Soldering Iron: 3. The flat pack-IC on the CBA is affixed with glue, so be careful not to break or damage the foil of each pin or the solder lands under the IC when removing it. CBA 1. Using desoldering braid, remove the solder from all pins of the flat pack-IC. When you use solder flux which is applied to all pins of the flat pack-IC, you can remove it easily. (Fig.
DVM725 With Iron Wire: 2. Installation 1. Using desoldering braid, remove the solder from all pins of the flat pack-IC. When you use solder flux which is applied to all pins of the flat pack-IC, you can remove it easily. (Fig. S-1-3) 1. Using desoldering braid, remove the solder from the foil of each pin of the flat pack-IC on the CBA so you can install a replacement flat pack-IC more easily. 2. Affix the wire to a workbench or solid mounting point, as shown in Fig. S-1-5. 2.
DVM725 Instructions for Handling Semiconductors 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. 2.
DVM725 CABINET DISASSEMBLY INSTRUCTIONS 1. Disassembly Flowchart ID/ LOC. No. This flowchart indicates the disassembly steps to gain access to item(s) to be serviced. When reassembling, follow the steps in reverse order. Bend, route, and dress the cables as they were originally.
DVM725 (1): Identification (location) No. of parts in the figures (2): Name of the part (3): Figure Number for reference (4): Identification of parts to be removed, unhooked, unlocked, released, unplugged, unclamped, or desoldered. P=Spring, L=Locking Tab, S=Screw, CN=Connector *=Unhook, Unlock, Release, Unplug, or Desolder e.g. 2(S-2) = two Screws (S-2), 2(L-2) = two Locking Tabs (L-2) (5): Refer to “Reference Notes.
DVM725 A Drive Mechanism B CN5003 Short the three short lands by soldering CN5002 [9] Sensor CBA (S-6) CN5005 [8] Relay CBA (S-5) [10] Rear Panel View for A (S-7) (S-8) (S-7) OR Fig. D6 (S-8) (S-7) (S-8) Short the three short lands by soldering Slide (S-7) C Pickup Unit View for B View for C Fig. D7 Fig.
DVM725 (S-15) [11] Tray Guide (L) (S-9) (S-15) (S-15) CN3102 [12] Tray Guide (R) Unit FFC Clamper (S-14) CN3301 (S-10) CN1001 (S-14) [19] Changer CBA CN1601 [20] AV CBA CN3003 CN3004 Fig. D10 Fig. D8 [21] Shield Plate (S-12) [14] Slide Tray Gear (B) (S-16) (S-16) (P-1) [15] Slide Tray Gear (A) (W-1) [17] Switch CBA (S-17) (S-11) Belt L [22] DVD Main CBA Unit [13] Loading Pulley (S-13) (S-18) [18] Tray Guide (R) (L-4) [23] PCB Holder [16] Motor Assembly Fig. D9 Fig.
DVM725 TROUBLESHOOTING FLOW CHART NO.1 The power cannot be turned on. Is the fuse normal? Yes Is normal state restored when once unplugged power cord is plugged again after several seconds? Yes Is the EV +9V line voltage normal? Yes Is each voltage of the secondary side normal? Yes When pressing POWER button (SW2201), is the voltage of 0V supplied to pin(38) of IC3001? Yes Is the voltage of 3.3V supplied to pin(1) of IC3001? Yes Replace IC3001. No See FLOW CHART No.2
DVM725 FLOW CHART NO.6 P-ON+9V (EV+9V) is not outputted. Is 9V voltage supplied to the emitter of Q1002? No Check D1030, C1035, C1048, L1009 and the periphery circuit, and service it if defective. Yes No Is the voltage of base on Q1002 lower than the voltage of emitter on Q1002 when turning the power on? Check Q1016 and service it if defective. Yes Replace Q1002. FLOW CHART NO.7 P-ON+5V is not outputted. (P-ON+9V is outputted normally.
DVM725 FLOW CHART NO.12 The fluorescent display tube does not light up. No Is 3.3V voltage supplied to Pin(6) and Pin(24) of IC2001? Yes Is the voltage of approximately -24V to -28V supplied to Pin(15) of IC2001? Yes Check the P-ON+3.3V line and service it if defective. No Check the -FL (-28V) line and service it if defective.
DVM725 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.
DVM725 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. Yes No Original DVD Main CBA Unit is poor. Replace the DVD Mechanism. FLOW CHART NO.19 [No Disc] indicated. (When the laser beam does not light up.) Replace the DVD Main CBA Unit. No improvement can be found. Yes No Original DVD Main CBA Unit is poor. Replace the DVD Mechanism. FLOW CHART NO.20 Both functions of picture and sound do not operate normally.
DVM725 FLOW CHART NO.21 Picture does not appear normally. Set the disc on the disc tray, and playback. Are the video signals outputted to each pin of CN1601 on the AV CBA? CN1601 CN1601 CN1601 CN1601 3PIN 5PIN 7PIN 9PIN No Pr/Cr Pb/Cb S-Y(I/P) S-C Yes Are the video signals shown above inputted into each pin of IC1402? IC1402 2PIN IC1402 6PIN IC1402 9PIN IC1402 11PIN Replace the DVD Main CBA Unit or DVD Mechanism.
DVM725 FLOW CHART NO.22 Audio is not outputted. Set the disc on the disc tray, and playback. Are the analog audio signals outputted to each pin of CN1601 on AV CBA? No Replace the DVD Main CBA Unit or DVD Mechanism. CN1601 13PIN AUDIO-L CN1601 15PIN AUDIO-R Yes Are the analog audio signals inputted to each pin of IC1201. Check each line between each pin of CN1601 and each pin of IC1201 on AV CBA, and service it if defective.
DVM725 FLOW CHART NO.23 Rotary tray does not function. Is the normal control voltage inputted to pins (39, 40, 41) of IC3001? For each terminal voltage, refer to FLOW CHART No.13 No Check the switches (SW2206 - 2208, 2210 - 2212) and their periphery, and service it if defective. Yes No Is the voltage of 3.3V supplied to pin(1) of IC3001? Yes Is the normal control voltage outputted to pins (24, 25) of IC3001? Yes Check CHG 3.3V line and service it if detective.
SLED MOTOR M M SPINDLE MOTOR RM2 RM1 M SENSOR CBA FG CBA FG SENSOR DRIVE CBA CN5002 6 7 5 CN5003 CN5001 3 12 4 9 8 13 9 14 1 10 CN3001 CN3301 3 SP(+) 12 4 SP(-) 9 8 SL(-) 13 9 SL(+) 14 1 FG-IN 10 CHANGER CBA TS(+) TS(-) FS(+) FS(-) CN3001 7 5 CN301 3 4 8 9 1 CN3001 1 3 12 SLED MOTOR DRIVE SPINDLE MOTOR DRIVE 14 +3.3V - + - + - + - + - - + - + + 5 RESET 4 IC461 23 6 4 5 2 3 1 25 24 27 26 X451 36.
FS PICK-UP UNIT TS DETECTOR 74 85 FS(+) FS(-) TS(+) TS(-) CN5004 18 19 20 17 RELAY CBA CN5005 18 19 20 17 FS(+) FS(-) TS(+) TS(-) CN201 18 19 20 17 CD 4 6 FS(+) FS(-) TS(+) TS(-) IC201 (SW) DVD CD-LD DVD-LD PD-MONI GND(DVD-PD) GND(CD-PD) GND(LD) 1 3 Q253,Q254 CN5004 CN201 CD-LD 12 12 AMP DVD-LD 14 AMP 14 Q251,Q252 PD-MONI 13 13 15 GND(DVD-PD) 15 16 GND(CD-PD) 16 GND(LD) 11 11 CN5005 12 14 13 15 16 11 C D A B F E CD/DVD CN201 6 7 8 5 10 2 9 CN5004 6 7 8 5 10 2 9 2 13 184 205 247 256
TO SYSTEM CONTROL /SERVO BLOCK DIAGRAM TO DIGITAL SIGNAL PROCESS BLOCK DIAGRAM PCM-SCLK A-MUTE ADAC-MD ADAC-MC ADAC-ML PCM-BCK PCM-DATA3 PCM-LRCLK SPDIF I/P-SW TO DIGITAL SIGNAL PROCESS BLOCK DIAGRAM VIDEO-C VIDEO-Y(I/P) VIDEO-Pb/Cb VIDEO-Pr/Cr 13 14 15 1 2 3 VIDEO-C VIDEO-Y(I/P) VIDEO-Pb/Cb VIDEO-Pr/Cr SERIAL CONTROL SERIAL PORT WF2 ZERO DETECT ENHANCED MULTI-LEVEL DELTA-SIGMA MODULATOR REMOTE2 REMOTE1 DVD MAIN CBA UNIT 16 SYSTEM CLOCK TO SYSTEM CONTROL/SERVO BLOCK DIAGRAM CN1601
AC1001 AC CORD V LINE FILTER L1001 24 LATCH Q1008 F1001 1A 250V A F AV CBA SWITCHING SWITCHING CONTROL HOT Q1001 Q1003 BRIDGE RECTIFIER D1001, D1002 D1004, D1005 HOT CIRCUIT. BE CAREFUL. CAUTION ! Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. If Main Fuse (F1001) is blown , check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply.
DVM725 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.
DVM725 LIST OF CAUTION, NOTES, AND SYMBOLS USED IN THE SCHEMATIC DIAGRAMS ON THE FOLLOWING PAGES: 1. CAUTION: F A V 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. RISK OF FIRE-REPLACE FUSE AS MARKED. This symbol means fast operating fuse. Ce symbole represente un fusible a fusion rapide. 2.
DVM725 DVD Main 1/3 Schematic Diagram 27
DVM725 DVD Main 2/3 Schematic Diagram 28
DVM725 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 1 3.3 3.3 33 2.2 2.9 65 0.1 0.1 97 ----- ----- 129 2.0 2.0 161 0.5 0.5 193 ~ ~ 225 1.9 1.9 2 ~ ~ 34 ~ ~ 66 1.2 2.5 98 1.6 1.6 130 2.2 2.2 162 1.4 1.4 194 0 0 226 3.3 3.3 3 ~ ~ 35 ~ ~ 67 1.6 1.6 99 0 0 131 2.3 2.3 163 ----- ----- 195 3.3 3.
DVM725 DVD Main 3/3 Schematic Diagram 30
DVM725 AV 1/2 Schematic Diagram CAUTION ! Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. If Main Fuse (F1001) is blown , check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply. Otherwise it may cause some components in the power supply circuit to fail. F A V CAUTION ! For continued protection against fire hazard, replace only with the same type fuse.
DVM725 AV 2/2 Schematic Diagram 32
DVM725 Changer 1/2 , Function , Power Switch & Switch Schematic Diagram 33
DVM725 Changer 2/2 Schematic Diagram 7G STANDBY REPEAT A-B 6G 5G TITLE 4G 3G 2G CHP. TRK. a c f d g FL2001 MATRIX CHART 1G b e DVD VCD PBC 1 3 2 4 5 7G 6G 5G 4G 3G 2G 1G a STANDBY a a a a a 1 b REPEAT b b b b b 2 c A -B c c c c c 3 d d d d d 4 e e e e e e 5 f f f f g g g g d h i 34 TITLE DVD g g PBC CHP. TRK.
DVM725 Relay , Sensor , Drive , FG & Pick Up Unit Schematic Diagram 35
DVM725 WAVEFORMS WF1 Pin 7 of CN1601 VIDEO-Y WF2 0.2V 0.2V Pin 15 of CN1601 AUDIO(R) 20µs Pin 9 of CN1601 VIDEO-C WF3 WF5 WF6 20µs 0.5V 0.5ms Pin 18 of CN1601 SPDIF 1V 0.1µs C1402 PLUS LEAD NOTE: VIDEO-CVBS WF4 0.5V 20µs Input DVD: COLOR BAR SIGNAL (WITH 1KHz AUDIO SIGNAL) (WF1~WF6) Pin 13 of CN1601 AUDIO(L) 0.5V 0.
M M 1 2 3 4 M TS FS DRIVE CBA SLIED TRAY ASSEMBLY ROTARY MOTOR PICK UP UNIT 11 2 3 DETECTOR 5 6 4 7 SLED MOTOR TRAY-IN SPINDLE MOTOR FG SENSOR FG CBA UP/DOWN SWITCH CN5101 D-SENS-A RT-SENS-A P-ON+3.
DVM725 FIRMWARE RENEWAL MODE 5. After programming is finished, the tray opens automatically. Fig. e appears on the screen and the checksum in (*2) of Fig. e appears on the VFD. (Fig. f) 1. Turn the power on and remove the disc on the tray. 2. To put the DVD player into version up mode, press [9], [8], [7], [6], and [SEARCH MODE] buttons on the remote control unit in that order. The tray will open automatically. Fig. a appears on the screen and Fig. b appears on the VFD.
DVM725 LEAD IDENTIFICATIONS S D G E C B E C B PT6313-S-TP(L) SC16313G PT204-6B-12 M38503M2A-070FP BA6956AN 15 28 22 42 2SK3374 DTC114ESA TP 2SA1015-Y(TE2 F T) KRA110M-AT/P KTA1266-Y-AT/P KTA1267-Y-AT/P KTC3199-GR-AT/P 2SA1815-(GR)(TE2 F T) 2SA966-Y(TE6 F M) KTC3198-Y-AT/P KTC3205-Y-AT/P KTA1273-Y-AT/P 1 14 1 C 21 1 7 E BD4829G-TR 5 NJM4558D KIA4558P CXA1511M-T4 4 8 KIA431-AT/P FAN431AZXA 5 0C-0805T*002 1: Vin 2: Vo 3: GND 4: Vc 1: R 2: A 3: K 1 2 3 1 PQ070XF01SZH 4 1 234 1
DVM725 EXPLODED EXPLODEDVIEWS VIEWS Cabinet 1 2L021 2L021 2L021 2L021 See See Electrical Electrical Parts Parts List List for for parts parts with with this this mark. mark. Some Some Ref. Ref. Numbers Numbers are are not not in in sequence. sequence.
DVM725 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 B1-43 B1-43 B1-42 B1-42 B1-24 B1-24 B1-22 B1-22 B1-24 B1-24 B1-46 B1-46 B1-3 B1-3 B1-20 B1-20 B1-19 B1-19 D-3 D-3 B1-11 B1-11 Some Ref.Numbers are not in sequence. Some Ref.Numbers are not in sequence.
DVM725 DVM725 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。 ※ The parts listed below are for maintenance only, might differ from the parts used in the unit in appearances or dimensions. Ref. No. PartNo.
DVM725 Ref. No. PartNo. Part Name Remarks Q'ty SCREWS 1L016 - SCREW TAP TIGHT WASHER+ P-TIGHT GCJP3080 1 1L017 - SCREW P-TIGHT 3X12 WASHER HEAD+ GCJP3120 1 1L023 - SCREW SEMS M2.
DVM725 PACKING Packing X21 X22 X10 X5 X2 S3 S2 X1 X4 S10 S5 S4 S3 S2 Unit A22 A30 S1 A30 44
DVM725 DMV725 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。 ※ The parts listed below are for maintenance only, might differ from the parts used in the unit in appearances or dimensions.. Ref. No. PartNo.
