For Europe model SERVICE MANUAL MODEL Ver. 2 DVD-1720 DVD VIDEO PLAYER 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.
DVD-1720 TABLE OF CONTENTS SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 LASER BEAM SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 IMPORTANT SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 STANDARD NOTES FOR SERVICING . .
DVD-1720 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 3. Audio (PCM) 3-1. Output Level 1 kHz, 0 dB, 47k Ω load 3-2. S/N 47k Ω load dB 90 DVD fs = 48 kHz ± 0.5 dB, 47k Ω load Hz 20 ~ 22 k CD fs = 44.1 kHz ± 0.5 dB, 47k Ω load Hz 20 ~ 20 k DVD 1 kHz, 0 dB, 47k Ω load % 0.01 CD 1 kHz, 0 dB, 47k Ω load % 0.01 3-3. Freq. Response 3-4. THD+N Notes: 1.
DVD-1720 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. Do not look directly at the laser beam.
DVD-1720 IMPORTANT SAFETY PRECAUTIONS Product Safety Notice K. Crimp type wire connector The power transformer uses crimp type connectors which connect the power cord and the primary side of the transformer. When replacing the transformer, follow these steps carefully and precisely to prevent shock hazards.
DVD-1720 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. Chassis or Secondary Conductor Primary Circuit Terminals d' d 1.
DVD-1720 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. Top View Out How to Remove / Install Flat Pack-IC 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.
DVD-1720 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.
DVD-1720 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.
DVD-1720 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.
DVD-1720 CABINET DISASSEMBLY INSTRUCTIONS 1. Disassembly Flowchart Note: (1) Identification (location) No. of parts in the figures 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. (2) Name of the part (3) Figure Number for reference (4) Identification of parts to be removed, unhooked, unlocked, released, unplugged, unclamped, or desoldered.
DVD-1720 [6] Rear Panel [1] Top Cover (S-1) (S-4) (S-3) (S-1) (S-1) Fig. D1 Fig. D4 [3] Tray Panel (L-4) (L-4) (S-5B) (S-5A) CN201 (L-2) CN601 CN301 (L-1) CN401 A [7] DVD Main CBA Unit (L-1) (L-3) CN2001 (L-2) [2] Front Unit Fig. D2 [4] Function CBA (S-2) Short the three short lands by soldering. (Either of two places.) (S-2) Connector View for A [5] Front Assembly Fig. D5 Fig.
DVD-1720 (S-6) (S-6) [8] DVD Mechanism Fig. D6 (S-7) (S-7) (S-8) [9] LED CBA CN2102 [10] AV CBA Fig. D7 (S-9) [12] Power PCB Holder (S-9) [11] Loader Base (S-10) Fig.
DVD-1720 3. How to Eject Manually 1. Remove the Top Cover. 2. Rotate the roulette in the direction of the arrow as shown below.
DVD-1720 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. Fig. a appears on the screen. "*******" differ depending on the models. MODEL : ******* Version : *.** Region : * EEPROM CLEAR : CLEAR EXIT: POWER Fig. a 2. Press [CLEAR] button on the remote control unit. Fig. b appears on the screen.
DVD-1720 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.
DVD-1720 TROUBLESHOOTING FLOW CHART NO.1 The power cannot be turned on. No Is the fuse normal? Yes Is normal state restored when once unplugged power cord is plugged again after several seconds? Yes Is the EV +3.3V line voltage normal? Yes Check each rectifying circuit of the secondary circuit and service it if defective. No No See FLOW CHART No.2 Check if there is any leak or short-circuiting on the primary circuit component, and service it if defective.
DVD-1720 FLOW CHART NO.7 P-ON+3.3V is not outputted. (P-ON+11V is outputted normally.) Is 3.3V voltage supplied to the collector of Q1011? Yes Replace Q1011 or R1067. No Check D1008, C1007, C1038, L1007 and the periphery circuit, and service it if defective. FLOW CHART NO.8 EV+5V is not outputted. Is EV+11V outputted normally? Yes Is the "H" signal inputted into the base of Q1014? Yes Replace Q1014. No Refer to "FLOW CHART NO.5"
DVD-1720 FLOW CHART NO.11 -FL is not outputted. Is F1(-15V) outputted normally? Yes Is approximately -22V voltage supplied to the anode of D1003? Yes Is approximately -20V voltage outputted to the collector of Q1013? Yes Check if there is any leak or short-circuit on the loaded circuit, and service it if defective. No Refer to "FLOW CHART NO.10" No Check D1003 and periphery circuit, and service it if defective.
DVD-1720 FLOW CHART NO.14 The disc tray cannot be opened and closed. (It can be done using the remote control unit.) Is the normal control voltage inputted to Pin(4) of IC2001? Refer to "FLOW CHART NO.12" No Replace the "OPEN/CLOSE" button (SW2108). Yes Refer to "FLOW CHART NO.15" FLOW CHART NO.15 The disc tray cannot be opened and closed. Replace the DVD Main CBA. No improvement can be found.
DVD-1720 FLOW CHART NO.20 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 1PIN CN1601 4PIN CN1601 6PIN CN1601 8PIN CN1601 10PIN No Replace the DVD Main CBA or DVD Mechanism. S-Y(I) Cr/Pr, R Cb/Pb, B Y, G S-C Yes Are the video signals shown above inputted into each pin of IC1401, IC1402, IC1405? S-VIDEO OUT, VIDEO OUT is NG. IC1401 IC1401 RGB OUT is NG.
DVD-1720 FLOW CHART NO.21 Audio is not outputted normally. 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 or DVD Mechanism. CN1601 13PIN AUDIO(L) CN1601 15PIN AUDIO(R) Yes Are the analog audio signals inputted to each pin of IC1201. No IC1201 2PIN AUDIO(L) IC1201 6PIN AUDIO(R) Check each line between each pin of CN1601 and each pin of IC1201 on AV CBA, and service it if detective.
M SLED MOTOR M SPINDLE MOTOR TRAY-IN DRIVE CBA TO DIGITAL SIGNAL PROCESS BLOCK DIAGRAM TO VIDEO/ AUDIO BLOCK DIAGRAM SP(+) SP(-) TRAY-IN GND SL(-) SL(+) TS(+) TS(-) FS(+) FS(-) ASPECT PCM-SCLK AUDIO-MUTE ADAC-MD ADAC-MC ADAC-ML CN301 3 4 5 6 7 8 *1 - 12 13 5 6 3 2 - + - + - + IC202 (OP AMP) 23 6 4 5 2 3 1 25 24 27 26 14 7 1 VREF RESET 3 IC462 DVD MAIN CBA UNIT +3.
FS PICK-UP UNIT TS DETECTOR FS(+) FS(-) TS(+) TS(-) CD-LD DVD-LD PD-MONI GND(DVD-PD) GND(CD-PD) GND(LD) C D A B E F CD/DVD ~ CN201 2 3 1 4 CD 4 6 FS(+) FS(-) TS(+) TS(-) IC201 (SW) DVD 217 252 DATA RAM INST.
TO SYSTEM CONTROL /SERVO BLOCK DIAGRAM TO DIGITAL SIGNAL PROCESS BLOCK DIAGRAM PCM-SCLK AUDIO-MUTE ASPECT ADAC-MD ADAC-MC ADAC-ML PCM-BCK PCM-DATA PCM-LRCLK SPDIF TO DIGITAL SIGNAL PROCESS BLOCK DIAGRAM VIDEO-Y(I) VIDEO-C VIDEO-Y/G VIDEO-Pb/B VIDEO-Pr/R I/P-SW DVD MAIN CBA UNIT 4 3 2 7 6 8 CN1601 VIDEO-Y(I) 1 VIDEO-C 10 VIDEO-Y/G 8 VIDEO-Pb/B 6 VIDEO-Pr/R 4 I/P-SW 2 SERIAL CONTROL PORT AUDIO SERIAL PORT 4X/8X OVERSAMPLING DIGITAL FILTER /FUNCTION CONTROLLER IC601 (AUDIO DAC) CN601 1 10 8
AC1001 AC CORD 26 HOT LATCH BRIDGE RECTIFIER AV CBA SWITCHING CONTROL Q1003 D1001, D1002 D1004, D1005 Q1008 L1001 F1001 T1.6A L 250V LINE FILTER HOT CIRCUIT. BE CAREFUL. SWITCHING Q1001 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.
DVD-1720 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.
DVD-1720 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. 2. CAUTION: Fixed Voltage (or Auto voltage selectable) power supply circuit is used in this unit. If Main Fuse (F1001) is blown, first 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.
DVD-1720 DVD Main 1/3 Schematic Diagram 1 NOTE: Either IC461 or IC462 is used for DVD MAIN CBA UNIT.
DVD-1720 DVD Main 2/3 Schematic Diagram 30
DVD-1720 IC101 Voltage Chart ~ : Voltage is not consistent 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 ----- : Not used STOP Unit : Volts PIN.NO PLAY STOP 1 ~ ~ 33 ~ ~ 65 ~ ~ 97 ----- ----- 129 2.3 2.3 161 0 0 193 ----- ----- 225 1.9 1.9 2 0 0 34 0 0 66 3.4 3.4 98 ----- ----- 130 2.3 2.3 162 1.7 1.7 194 ----- ----- 226 0 0 3 3.4 3.4 35 3.4 3.4 67 2.8 2.
DVD-1720 DVD Main 3/3 Schematic Diagram 32
DVD-1720 AV 1/3 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. CAUTION ! For continued protection against fire hazard, replace only with the same type fuse.
DVD-1720 AV 2/3 Schematic Diagram 34
DVD-1720 AV 3/3, Function & LED Schematic Diagram 7G 6G 5G VCR REPEAT TITLE GROUP A B ALL f i i 4G 3G 2G 1G REC SACD CHP TRK PSCAN DVD A PM HD VCD c f a d g b e FL2001 MATRIX CHART 7G 6G 5G 4G 3G 2G 1G a a a a a SACD b b c c c d d d e REPEAT A B ALL b e e e f f f f f g g g a b c d g GROUP h i 35 i TITLE VCR PSCAN DVD d d A e e P f f M g g HD CHP TRK V REC CD b b c c
DVD-1720 WAVEFORMS WF1 Pin 8 of CN1601 VIDEO-Y WF2 0.1V 0.1V Pin 15 of CN1601 AUDIO(R) 20µs 20 Pin 10 of CN1601 VIDEO-C WF3 WF5 WF6 20µs 20 0.5ms Pin 18 of CN1601 SPDIF 1V 0.1µs 0.1 C1402 PLUS LEAD NOTE: VIDEO-CVBS WF4 1V 0.5V Input CD: 1kHz PLAY (WF4~WF6) DVD: POWER ON (STOP) MODE (WF1~WF3) 20µs 20 Pin 13 of CN1601 AUDIO(L) 1V 0.
VIDEO-Y OUT AUDIO(L)- AUDIO(R)OUT OUT DIGITAL AUDIO OUT (OPTICAL) S-VIDEO OUT 1 2 3 4 5 6 7 8 9 37 CN301 SL(+) SL(-) GND TRAY-IN SP(-) SP(+) 8 7 6 5 4 3 DRIVE CBA TS FS PICK UP UNIT DETECTOR 7 9 11 2 3 6 5 4 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 SPINDLE MOTOR M DVD MECHANISM 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 P-ON+5V CD/DVD D A C B E VREF F GND CD-LD GND(LD) DVD-LD PD-MONI GND(DVD-PD) GND(CD-PD) TS(-) FS(-) FS(+) TS(+) TRAY-IN PULSE EV+1.2V EV+1.
DVD-1720 LEAD IDENTIFICATIONS E C B 2SC1815-GR(TE2 F T) 2SC1815-GR(TPE2) 2SC1815-Y(TE2 F T) 2SC1815-Y(TPE2) BN1L3Z(P) KRA110M KTA1267(Y) KTA1267Y-AT/P KTC3199(GR,Y) KTC3199-GR-AT/P KTC3199-Y-AT/P 2SA1015-Y(TE2 F T) 2SA1015-Y(TPE2) 2SC2120-Y(TE2 F T) 2SC2120-Y(TPE2) 2SC2236-Y-TPE6 C BA1F4M-T KRC103M KTA1266(Y) KTA1266-Y-AT/P KTC3203(Y) KTC3203-Y-AT/P KTC3205(Y) KTC3205-Y-AT/P E C B KIA4558P/P RC4580IP UTC4558 MM1636XWRE 5 8 G D S FAN431AZXA KIA431-AT PT6313-S-TP(L) SC16313G 15 28 4 1 14 1 EL817
DVD-1720 EXPLODED VIEWS Cabinet See Electrical Parts List for parts with this mark. 2L011 Some Ref. Numbers are not in sequence.
DVD-1720 Packing X12 X10 X5 X2 S2 X1 X4 S4 S2 Unit A22 A30 S1 A30 40
DVD-1720 PARTS LIST NOTE: Parts that are not assigned part numbers (---------) are not available. PRODUCT SAFETY NOTE: Products marked with a ! have special characteristics important to safety. Before replacing any of these components, read carefully the product safety notice in this service manual. Don't degrade the safety of the product through improper servicing. Ref. No. Mark Comparison Chart of Models and Marks Description Model Mark DVD1720BKE2 A DVD1720SRE2 B Funai Parts No.
DVD-1720 Ref. No. ! Funai Parts No. DENON Parts No.
DVD-1720 DOCUMENTS FOR WEEE Details of Recycle parts for DVD-1720 model ＊ You have to remove the parts that marked “WEEE Mark ◆ " when the recycling processing. (Europe model only) WEEE Mark Ref. No.
DVD-1720 Exploded view 2L011 2L011 2L011 A16 2L011 2L021 2L021 2L021 1B1 2L106 2L105 2L011 DVD Main CBA Unit JK1401 A2 2B34 JK1404 JK1405 2L105 JK1202 2L107 2L021 IC1204 F1001 C1 2L102 2L106 2B1 2L102 LED CBA A' AV CBA 2L051 2L051 AC1001 2B2 2L071 2B4 2L041 A13 A17 A12 2L023 2L052 A A15 2L052 A13 A11 A1X Function CBA 2L023 You have to remove the parts that marked "WEEE mark " when the recycling processing.
