Philips-DVDR-3408-Service-Manual电路原理图.pdf

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1、. Technical Specifications.1-2 . Safety Instruction, Warning 5060 Hz Power Consumption: 28 W Standby power consumption: 4.0W Dimensions : Set Dimensions (W X H X D): 427 X 48 X 318mm Net Weight : 3.18 Kg Specifications subject to change without prior notice. 1-2Safety instructions 1. General safety

2、Safety regulations require that during a repair: . Connect the unit to the mains via an isolation transformer. . Replace safety components indicated by the symbol , only by components identical to the original ones. Any other component substitution (other than original type) may increase risk of fir

3、e or electrical shock hazard. Safety regulations require that after a repair, you must return the unit in its original condition. Pay, in particular, attention to the following points: . Route the wires/cables correctly, and fix them with the mounted cable clamps. . Check the insulation of the mains

4、 lead for external damage. . Check the electrical DC resistance between the mains plug and the secondary side: 1) Unplug the mains cord, and connect a wire between the two pins of the mains plug. 2) Set the mains switch the “on” position (keep the mains cord unplug). 3) Measure the resistance value

5、between the mains plug and the front panel, controls, and chassis bottom. 4) Repair or correct unit when the resistance measurement is less than 1M. 5) Verify this, before you return the unit to the customer/user (ref. UL-standard no. 1492). 6) Switch the unit “off”, and remove the wire between the

6、two pins of the mains plug. 2.Laser safety This unit employs a laser. Only qualified service personnel may remove the cover, or attempt to service this device (due to possible eye injury). Laser device unit Type : Semiconductor laser : InGaAIP (DVD) : AIGaAs (CD) Wavelength : 658nm (DVD) : 783nm (CD

7、) Power out objective lens: 1.0mW (DVD read) : 1.2mW (CD read) Note: Use of controls or adjustments or performance of procedure other than those specified herein, may result in hazardous radiation exposure. Avoid direct exposure to beam. Safety instruction, Warning & Notes1-3Warning1.General . All I

8、Cs and many other semiconductors are susceptible to electrostatic discharges (ESD). Careless handing during repair can reduce life drastically. Make sure that, during repair, you are at the same potential as the mass of the set by a wristband with resistance. Keep components and tools at this same p

9、otential. Available ESD protection equipment: 1) Complete kit ESD3 (small tablemat, wristband, connection box, extension cable and earth cable) 4822 310 10671. 2) Wristband tester 4822 344 13999. . Be careful during measurements in the live voltage section. The primary side of the power supply , inc

10、luding the heat sink, carries live mains voltage when you connect the player to the mains (even when the player is “off”!). It is possible to touch copper tracks and/or components in this unshielded primary area, when you service the player. Service personnel must take precautions to prevent touchin

11、g this area or components in this area. A “lighting stroke” and a stripe-marked printing on the printed wiring board, indicate the primary side of the power supply. . Never replace modules, or components, while the unit is “on”. 2. Laser . The use of optical instruments with this product will increa

12、se eye hazard. . Only qualified service personnel may remove the cover or attempt to service this device, due to possible eye injury. . Repair handing should take place as much as possible with a disc loaded inside the player. . Text below is placed inside the unit, on the laser cover shield: Notes:

13、 Manufactured under licence from Dolby Laboratories. The double-D symbol is trademarks of Dolby Laboratories, Inc. All rights reserved. CAUTION: VISIBLE AND INVISIBLE LASER RADIATION WHEN OPEN AVOID EXPOSURE TO BEAM. ADVARSEL: SYNLIG OG USYNLIG LASERETRALING VED ABNING UNDGA UDSETTELSE FOR STRALING.

14、 ADVARSEL: SYNLIG OG USYNLIG LASERSTRALING NAR DEKSEL APNES UNNGA EKSPONERING FOR STRALEN VARNLNG: SYNLIG OCH OSYNLIG LASERETRALNING NAR DENNA DEL AROP PNAD BETRAKTA EJSTRALEN VARO!: AV ATTAESSA OLET ALTTINA NAKYV ALLEJA NAKYMATTOMALLELASER SATELLYLLEALAKATSO SATEESEEN VORSICHT: SICHTBARE UND UNSICH

15、TB ARE LASERSTRSHLUNG WENN ABDECKUNG GEOFFNET NICHT DEM STRAHL AUSSETSEN DANGER: VISIBLE AND INVISIBLE LASER RADIATION WHEN OPEN AVOIDDIRECT EXPOSURE TO BEAM ATTENTION: RAYONNEMENT LASER VISIBLE ET INVISIBLE EN CASDOUVERTURE EXPOSTTION DANGEREUSE AUFAISC EAU1-4Dismantling Instruction The following g

16、uidelines show how to dismantle the recorder. Step1: Remove the 8 screws around the top cover, then remove top cover. (Figure 1) Step2: If it is necessary to dismantle Loader or Front Panel, It should be remove the front door assembly first. (Figure 2) Mechanical and Dismantling Instructions2-1Figur

17、e 1Figure 2 Please kindly note that dismantlethe front door assembly carefullyto avoid damage tray and thefront door assembly. Dismantling Instruction If the tray cant open in normal way, you can make it through the instruction as figure 3. Note: Make sure to operate gently otherwise it would be dam

18、aged Step3: Dismantling Loader. First, disconnect the 2 connectors then remove the 4 screws at both sides of the loader. (Figure 4) Mechanical and Dismantling Instructions2-2Figure 3Push the guider until thetray out. Make sure tooperate gently to avoiddamage happening. Figure 4CON 1 CON 2Dismantling

19、 Instruction Step4: Dismantling the Front Panel: Disconnect the 5 connectors, and remove the 3 screws on the bottom of the cabinet, then release the snaps on the both sides of front panel, finally gently pull the panel out from the set. (Figure 5&6 ) Step5: Dismantling Main Board, first disconnect t

20、he 4 connectors ,then remove 4 screws. (Figure 7) Mechanical and Dismantling Instructions2-3Figure 6 Snap 1Figure 5 CON 4 CON 5CON 3 CON 6CON 7Figure 7 CON 9 CON 8CON 10CON 11Dismantling Instruction Step6: Dismantling Tuner Board: first disconnect the 2 connectors, then remove the 2 screws (Figure 8

21、) Step7: Dismantling AV Board, first disconnect the 3 connectors, then remove the 4 screws. (Figure 9) Mechanical and Dismantling Instructions2-4Figure 8 CON 13 CON 12 Figure 9 CON 16CON 15CON 14Dismantling Instruction Step8: Remove the 3 screws on the back of the cabinet, then dismantle the Output

22、Board. (Figure 10) Step 9: Dismantling Power Board, first disconnect the 1 connector, then remove the 4 screws. (Figure 11) Mechanical and Dismantling Instructions2-5Figure 10 CON 17 Figure 11 Dismantling InstructionStep10: Make sure adding silicon glue to fix the capacitor after repairing. (Avoid the hazard of capacitor touching the top cover Figure 12)Figure 12 r Heat glue to fixCapacitor keep this statusMechanical and Dismantling Instructions2-6Add Silicon glue or Heat glue to fix Capacitor keep this status