Mitsubishi-DD4010-dvd-sm 电路图 维修手册.pdf

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1、 DVD PLAYER 2001 MODEL DD-4020 Manual Service MITSUBISHI ELECTRIC TABLE OF CONTENTS SPECIFICATIONS . 1-1-1 LASER BEAM SAFETY PRECAUTIONS. 1-2-1 IMPORTANT SAFETY PRECAUTIONS. 1-3-1 STANDARD NOTES FOR SERVICING . 1-4-1 CABINET DISASSEMBLY INSTRUCTIONS. 1-5-1 BLOCK DIAGRAMS . 1-6-1 SCHEMATIC DIAGRAMS /

2、 CBAS AND TEST POINTS . 1-7-1 WAVEFORMS. 1-8-1 WIRING DIAGRAM. 1-9-1 SYSTEM CONTROL TIMING CHARTS . 1-10-1 IC PIN FUNCTION DESCRIPTIONS.1-11-1 LEAD IDENTIFICATIONS. 1-12-1 EXPLODED VIEWS. 1-13-1 MECHANICAL PARTS LIST. 1-14-1 ELECTRICAL PARTS LIST . 1-15-1 MITSUBISHI DIGITAL ELECTRONICS AMERICA, INC.

3、 9351 Jeronimo Road, Irvine, CA 92618-1904 Copyright 2001 Mitsubishi Digital Electronics America, Inc. All Rights Reserved RadioFans.CN 收音机爱 好者资料库 HOW TO INITIALIZE THE SETUP MENU After turning the power ON, without a disc in the tray, press the 1, 2, 3, 4, DISPLAY and ENTER buttons on the remote co

4、ntrol unit in this order. Then, after turning the power OFF temporarily, turn the power ON again to intialize the Setup Menu. HOW TO CLEAR THE PASSWORD PROTECTION (In case of forgetting the password of Parental Lock) To release the parental lock, initialize the DVD player in the same way above. HOW

5、TO SET OR CLEAR THE TRAY LOCK To set the tray lock mode to on, follow the procedures below: 1. With loading a disc, set the DVD player to the stop mode. 2. Press the SETUP button to display the SETUP menu. 3. Press the TITLE button. 4. Press the 3 button. 5. Press the AUDIO button. 6. Press the 0 bu

6、tton. 7. Press the SETUP button. Tray Lock mode is set to ON and Tray Lock On is displayed on the top right of the screen. While the Tray Lock mode is on, the operation of opening or closing the tray is being canceled. Other operatins are available. To release the Tray Lock mode, perform the above p

7、rocedures again. Tray Lock mode is set to OFF and Tray Lock Off is displayed on the top right of the screen. HOW TO MANUAL EJECT 1. Remove the Top Case. 2. Insert the eject-bar (length = approximately 3 mm, diameter = approximately 8 mm) into the manual eject hole on the PCB Holder. Then, press it u

8、ntil the tray is ejected. 3. Pull out the tray. Manufatured under license from Dolby Laboratories. Dolby and the double-D symbol are trademarks of Dolby Laboratories. Confidential Unpublished Works. (1992-1997 Dolby Laboratories, Inc. All rights reserved.) DTS and DTS Digital Out are trademarks of D

9、igital Theater Systems Inc. Eject-Bar (Length = approximately 80 mm, Diameter = approximately 3 mm) Manual Eject Hole Tray Top Case PCB Holder RadioFans.CN 收音机爱 好者资料库 SPECIFICATIONS ITEMCONDITIONSUNITNOMINALLIMIT 1 Video Output75 ohm loadVpp1.0 2 Optical Digital OutdBm-18 3 Audio(PCM) 3-1. Output Le

10、vel1kHz 0dBVrms2.0 3-2. S/NdB110 3-3. Freq. Response DVDfs=48kHz 2022kHzdB 2 CDfs=44.1kHz 2020 kHzdB 2 3-4. THD+N1 kHz 0dB%0.005 NOTES: 1. All Items are measured without pre-emphasis unless otherwise specified. 2. Power supply : AC120 V 60 Hz 3. Load imp. : 100 K ohm 4. Room ambient : +25 C 1-1-1E55

11、00SP RadioFans.CN 收音机爱 好者资料库 LASER BEAM SAFETY PRECAUTIONS This DVD player uses a pickup that emits a laser beam. 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 30cm away from the pickup lens when the diode is turned

12、 on. Do not look directly at the laser beam. Caution: Use of controls and adjustments, or doing procedures other than those specified herein, may result in hazardous radiation exposure. Do not look directly at the laser beam coming from the pickup or allow it to strike against your skin. LASER RADIA

13、TION WHEN OPEN. DO NOT STARE INTO BEAM. CAUTION Location: Inside Top of DVD mechanism. 1-2-1DVD_LASER IMPORTANT SAFETY PRECAUTIONS Product Safety Notice Some electrical and mechanical parts have special safety-related characteristics which are often not evi- dent from visual inspection, nor can the

14、protection they give necessarily be obtained by replacing them with components rated for higher voltage, wattage, etc. Parts that have special safety characteristics are identified by a ? on schematics and in parts lists. Use of a substi- tute replacement that does not have the same safety character

15、istics as the recommended replacement part might create shock, fire, and/or other hazards. The Products Safety is under review continuously and new instructions are issued whenever appropriate. Prior to shipment from the factory, our products are carefully inspected to confirm with the recognized pr

16、oduct safety and electrical codes of the countries in which they are to be sold. However, in order to maintain such compli- ance, it is equally important to implement the following precautions when a set is being serviced. Precautions during Servicing A.Parts identified by the ? symbol are critical

17、for safety. Replace only with part number specified. B.In addition to safety, other parts and assemblies are specified for conformance with regulations applying to spurious radiation. These must also be replaced only with specified replacements. Examples: RF converters, RF cables, noise block- ing c

18、apacitors, and noise blocking filters, etc. C.Use specified internal wiring. Note especially: 1) Wires covered with PVC tubing 2) Double insulated wires 3) High voltage leads D.Use specified insulating materials for hazardous live parts. Note especially: 1) Insulation tape 2) PVC tubing 3) Spacers 4

19、) Insulators for transistors E.When replacing AC primary side components (transformers, power cord, etc.), wrap ends of wires securely about the terminals before soldering. F.Observe that the wires do not contact heat produc- ing parts (heatsinks, oxide metal film resistors, fus- ible resistors, etc

20、.). G.Check that replaced wires do not contact sharp edges or pointed parts. H.When a power cord has been replaced, check that 5 - 6 kg of force in any direction will not loosen it. I.Also check areas surrounding repaired locations. J.Use care that foreign objects (screws, solder drop- lets, etc.) d

21、o not remain inside the set. 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. Replacement procedure 1

22、)Remove the old connector by cutting the wires at a point close to the connector. Important: Do not re-use a connector. (Discard it.) 2)Strip about 15 mm of the insulation from the ends of the wires. If the wires are stranded, twist the strands to avoid frayed conductors. 3)Align the lengths of the

23、wires to be connected. Insert the wires fully into the connector. 4)Use a crimping tool to crimp the metal sleeve at its center. Be sure to crimp fully to the complete closure of the tool. L.When connecting or disconnecting the internal con- nectors, first, disconnect the AC plug from the AC outlet.

24、 1-3-1DVD_SFN1 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 speci- fied values to verify compliance

25、 with safety standards. 1. Clearance Distance When replacing primary circuit components, confirm specified clearance distance (d) and (d) between sol- dered terminals, and between terminals and surround- ing metallic parts. (See Fig. 1) Table 1 : Ratings for selected area AC Line VoltageClearance Di

26、stance (d) (d) 120 V 3.2 mm (0.126 inches) Note: This table is unofficial and for reference only. Be sure to confirm the precise values. 2. Leakage Current Test Confirm the specified (or lower) leakage current be- tween B (earth ground, power cord plug prongs) and externally exposed accessible parts

27、 (RF terminals, an- tenna terminals, video and audio input and output ter- minals, microphone jacks, earphone jacks, etc.) is lower than or equal to the specified value in the table below. Measuring Method (Power ON) : Insert load Z between B (earth ground, power cord plug prongs) and exposed access

28、ible parts. Use an AC voltmeter to measure across the terminals of load Z. See Fig. 2 and the following table. Table 2 : Leakage current ratings for selected areas AC Line VoltageLoad ZLeakage Current (i)Earth Ground (B) to: 120 V 0.15F CAP. when removing entire flat pack-IC, first apply soldering i

29、ron to center of the flat pack-IC and heat up. Then remove (glue will be melted). (Fig. S-1-6) (4)Release the flat pack-IC from the CBA using tweez- ers. (Fig. S-1-6) Caution: 1.Do not supply hot air to the chip parts around the flat pack-IC for over 6 seconds because damage to the chip parts may oc

30、cur. Put masking tape around the flat pack-IC to protect other parts from damage. (Fig. S-1-2) 2.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. Hot-air Flat Pack-IC Desoldering Machine CBA

31、 Masking Tape Tweezers Flat Pack-IC Fig. S-1-2 Fig. S-1-1 Top View OutIn Bottom View Input 5 10 Pin 1 Pin 1 FFC Cable Connector CBA * Be careful to avoid a short circuit. 1-4-1DVD_NOTE With Soldering Iron: (1)Using desoldering braid, remove the solder from all pins of the flat pack-IC. When you use

32、solder flux which is applied to all pins of the flat pack-IC, you can remove it easily. (Fig. S-1-3) (2)Lift each lead of the flat pack-IC upward one by one, using a sharp pin or wire to which solder will not adhere (iron wire). When heating the pins, use a fine tip soldering iron or a hot air desol

33、dering machine. (Fig. S-1-4) (3)Bottom of the flat pack-IC is fixed with glue to the CBA; when removing entire flat pack-IC, first apply soldering iron to center of the flat pack-IC and heat up. Then remove (glue will be melted). (Fig. S-1-6) (4)Release the flat pack-IC from the CBA using tweez- ers

34、. (Fig. S-1-6) With Iron Wire: (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) (2)Affix the wire to a workbench or solid mounting point, as shown in Fig.

35、 S-1-5. (3)While heating the pins using a fine tip soldering iron or hot air blower, pull up the wire as the solder melts so as to lift the IC leads from the CBA contact pads as shown in Fig. S-1-5. (4)Bottom of the flat pack-IC is fixed with glue to the CBA; when removing entire flat pack-IC, first

36、 apply soldering iron to center of the flat pack-IC and heat up. Then remove (glue will be melted). (Fig. S-1-6) (5)Release the flat pack-IC from the CBA using tweez- ers. (Fig. S-1-6) Note: When using a soldering iron, care must be taken to ensure that the flat pack-IC is not being held by glue. Wh

37、en the flat pack-IC is removed from the CBA, handle it gently because it may be damaged if force is applied. Flat Pack-IC Desoldering Braid Soldering Iron Fig. S-1-3 Fine Tip Soldering Iron Sharp Pin To Solid Mounting Point Hot Air Blower Iron Wire Soldering Iron or Fig. S-1-4 Fig. S-1-5 CBA Tweezer

38、s Flat Pack-IC Fine Tip Soldering Iron Fig. S-1-6 1-4-2DVD_NOTE 2. Installation (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)The G mark on the flat pack-IC indicates pin 1. (See Fi

39、g. S-1-7.) Be sure this mark matches the 1 on the PCB when positioning for installation. Then pre- solder the four corners of the flat pack-IC. (See Fig. S-1-8.) (3)Solder all pins of the flat pack-IC. Be sure that none of the pins have solder bridges. Instructions for Handling Semiconductors Electr

40、ostatic breakdown of the semiconductors may occur due to a potential difference caused by electro- static charge during unpacking or repair work. 1. Ground for Human Body Be sure to wear a grounding band (1M) that is properly grounded to remove any static electricity that may be charged on the body.

41、 2. Ground for Workbench Be sure to place a conductive sheet or copper plate with proper grounding (1M) on the workbench or other surface, where the semiconductors are to be placed. Because the static electricity charge on clothing will not escape through the body grounding band, be careful to avoid

42、 contacting semiconductors with your clothing. CBA CBA Grounding Band Conductive Sheet or Copper Plate 1M 1M Presolder Soldering Iron CBA Flat Pack-IC Example : Pin 1 of the Flat Pack-IC is indicated by a G mark. Fig. S-1-7 Fig. S-1-8 1-4-3DVD_NOTE CABINET DISASSEMBLY INSTRUCTIONS 1. Disassembly Flo

43、wchart 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. Disassembly Method ID/ LOC. No. PART REMOVAL Fig. No. REMOVE/ *UNHOOK/UNLOCK/ RELEASE/UNPLUG/ DESOLDER Note 1Top Case15(S-1)- 2 Front Assembly 2*2(L-1), Tray Panel, *2(L-2), *5(L-3) 1-1 1-2 3 Function CBA 3*3(L-4), *(CN2001) - 4 PCB Holder 42(S-2) - 5 DVD Mecha 4,5*(CN001, CN201), 2(S-3) 2-1 2-2 2-3 3 6 AV CBA64(S-4), 4(S-5), *2(L-5), *(CN701, CN501) - 7 DVD Mecha