Philips-DVDR-3440-H-Service-Manual电路原理图.pdf

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1、2.1 Safety Instructions2.1.1 General SafetySafety 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. Anyother component substitution (other than o

2、riginal type) may increase risk of re or electrical shock hazard.Safety regulations require that after a repair, you must return the unit in its original condition. Pay, in particular, attention tothe following points: Route the wires/cables correctly, and x them with themounted cable clamps. Check

3、the insulation of the mains lead for externaldamage. Check the electrical DC resistance between the mains plug and the secondary side:1. Unplug the mains cord, and connect a wire betweenthe two pins of the mains plug.2. Set the mains switch to the on position (keep themains cord unplugged!).3. Measu

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

5、e wire between the two pins of the mains plug.2.1.2 Laser SafetyThis unit employs a laser. Only qualied service personnel may remove the cover, or attempt to service this device (due to possible eye injury).Laser Device UnitType : Semiconductor laser GaAlAsWavelength : 650 nm (DVD): 780 nm (VCD/CD)O

6、utput Power : 20 mW(DVD+RW writing): 0.8 mW(DVD reading): 0.3 mW(VCD/CD reading)Beam divergence : 60 degreeCLASS 1LASER PRODUCTFigure 2-1Note: Use of controls or adjustments or performance of procedure other than those specied herein, may result in hazardous radiation exposure. Avoid direct exposure

7、 to beam.2.2 Warnings2.2.1 General All ICs and many other semiconductors are susceptible to electrostatic discharges (ESD, ). Careless handling 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 resistanc

8、e. Keep components and tools at this same potential.Available ESD protection equipment: Complete kit ESD3 (small tablemat, wristband, connection box, extension cable and earth cable) 4822 310 10671. Wristband tester 4822 344 13999. Be careful during measurements in the live voltage section. The prim

9、ary side of the power supply, including the heatsink, 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

10、 precautions to prevent touching this area or components in this area. A lightning 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.2.2.2 Laser The use of optical instruments wit

11、h this product, will increase eye hazard. Only qualied service personnel may remove the cover or attempt to service this device, due to possible eye injury. Repair handling should take place as much as possible with a disc loaded inside the player. Text below is placed inside the unit, on the laser

12、cover shield:Figure 2-22. Safety Information, General Notes & Lead Free RequirementsCAUTION VISIBLE AND INVISIBLE LASER RADIATION WHEN OPEN AVOID EXPOSURE TO BEAMADVARSEL SYNLIG OG USYNLIG LASERSTRLING VED BNING UNDG UDSTTELSE FOR STRLINGADVARSEL SYNLIG OG USYNLIG LASERSTRLING NR DEKSEL PNES UNNG EK

13、SPONERING FOR STRLENVARNING SYNLIG OCH OSYNLIG LASERSTRLNING NR DENNA DEL R PPNAD BETRAKTA EJ STRLENVARO! AVATTAESSA OLET ALTTIINA NKYVLLE JA NKYMTTMLLE LASER STEILYLLE. L KATSO STEESEENVORSICHT SICHTBARE UND UNSICHTBARE LASERSTRAHLUNG WENN ABDECKUNG GEFFNET NICHT DEM STRAHL AUSSETSEN DANGER VISIBLE

14、 AND INVISIBLE LASER RADIATION WHEN OPEN AVOID DIRECT EXPOSURE TO BEAMATTENTION RAYONNEMENT LASER VISIBLE ET INVISIBLE EN CAS DOUVERTURE EXPOSITION DANGEREUSE AU FAISCEAU2.3 Lead Free RequirementInformation about Lead-free produced setsPhilips CE is starting production of lead-free sets from 1.1.200

15、5 onwards. INDENTIFICATION:Regardless of special logo (not always indicated) One must treat all sets from 1 Jan 2005 onwards, according next rules. Example S/N:Bottom line of typeplate gives a 14-digit S/N. Digit 5&6 is the year, digit 7&8 is the week number, so in this case 1991 wk 18So from 0501 o

16、nwards = from 1 Jan 2005 onwardsImportant note: In fact also products of year 2004 must be treated in this way as long as you avoid mixing solder-alloys (leaded/ lead-free). So best to always use SAC305 and the higher temperatures belong to this.Due to lead-free technology some rules have to be resp

17、ected by the workshop during a repair: Use only lead-free solder alloy Philips SAC305 with order code 0622 149 00106. If lead-free solder-pate is required, please contact the manufacturer of your solder-equipment. In general use of solder-paste within workshops should be avoided because paste is not

18、 easy to store and to handle. Use only adequate solder tools applicable for lead-free solder alloy. The solder tool must be able o To reach at least a solder-temperature of 400C, o To stabilize the adjusted temperature at the solder-tip o To exchange solder-tips for different applications. Adjust yo

19、ur solder tool so that a temperature around 360C 380C is reached and stabilized at the solder joint. Heating-time of the solder-joint should not exceed 4 sec. Avoid temperatures above 400C otherwise wear-out of tips will rise drastically and ux-uid will be destroyed. To avoid wear-out of tips switch

20、 off un-used equipment, or reduce heat. Mix of lead-free solder alloy / parts with leaded solder alloy / parts is possible but PHILIPS recommends strongly to avoid mixed solder alloy types (leaded and lead-free). If one cannot avoid or does not know whether product is lead-free, clean carefully the

21、solder-joint from old solder alloy and re-solder with new solder alloy (SAC305). Use only original spare-parts listed in the Service-Manuals. Not listed standard-material (commodities) has to be purchased at external companies. Special information for BGA-ICs: - always use the 12nc-recognizable sold

22、ering temperature prole of the specic BGA (for de-soldering always use the lead-free temperature prole, in case of doubt) - lead free BGA-ICs will be delivered in so-called dry-packaging (sealed pack including a silica gel pack) to protect the IC against moisture. After opening, dependent of MSL-lev

23、el seen on indicator-label in the bag, the BGA-IC possibly still has to be baked dry. (MSL=Moisture Sensitivity Level). This will be communicated via AYS-website.Do not re-use BGAs at all. For sets produced before 1.1.2005 (except products of 2004), containing leaded solder-alloy and components, all

24、 needed spare-parts will be available till the end of the service-period. For repair of such sets nothing changes. On our website www.atyourservice.ce.P you nd more information to: BGA-de-/soldering (+ baking instructions) Heating-proles of BGAs and other ICs used in Philips-setsYou will nd this and

25、 more technical information within the “magazine”, chapter “workshop news”.For additional questions please contact your local repair-helpdesk.1.Technical Specifications and Connection Facilities Front Board Analogue BoardDigital BoardPSU1.1 Read / Write Speed Type of Disc(Function) Disc Rotation Spe

26、ed Read Speed CD 7X CAV Read Speed DVD 4X CAV Write Speed DVD+R/RW 2.4X ZCAV Write Speed DVD-R/RW 2X 1.3 General: Mains voltage : 220V-240V Mains frequency : 50Hz Standby Power consumption : 4.5V / 9.5V / 1V / 10k Video Cinch Input voltage : 1Vpp 3dB Input impedance : 75 Video YC (Hosiden) According

27、 to IEC 933-5 Superimposed DC-level on pin 4(load 100k) 3.5V is detected as 16:9 aspect ratio Input voltage Y : 1Vpp 3dB Input impedance Y : 75 Input voltage C : 300 mVpp 3dB Input impedance C : 75 1.6 Digital Inputs / Outputs 1.6.1 Digital Output Digital Audio Coaxial LCM : according IEC 60958 MPEG

28、 1,MPEG2,AC3 : according IEC 61937 DTS : according IEC 61937+addendum 1.7.3 Digital Video Input(IEEE 1394) Implementation Standard according: IEEE Std 1394-1995 IEC61883 - Part1 IEC61883 - Part2 SD-DVCR (02-01-1997) Specification of consumer use digital VCRs using 6.3mm magnetic tape dec. 1994 Mecha

29、nical connection according to Annex of IEC 61883-1 1.8 Video Performance All outputs loaded with 75 SNR measurements over full bandwidth without weighting. 1.8.1 SCART (RGB) SNR : -65dB on all output Bandwidth : 4.8MHz 2dB 1.9 Audio Performance CD 1.9.1 Cinch Output Rear Output voltage 2 channel mod

30、e : 2Vrms 2dB Channel unbalance (1kHz) : 100dB Crosstalk 16Hz-20kHz : 87dB Frequency response 20Hz-20kHz : 0.5dB max Signal to noise ratio : 85dB Crosstalk 16Hz-20kHz : 70dB Frequency response 20Hz-20kHz : 0.5dB max Signal to noise ratio : 80dB Dynamic range 1kHz : 75dB Distortion and noise 1kHz : 7

31、5dB Distortion and noise 16Hz-20kHz : 50dB Intermodulation distortion : 70dB Mute : 80dB Height of feet : 5.5mm Apparatus(WxDxH) : 435 x 65 x 340 mm Weight without packaging : 4.3 kg Weight with packaging : 6.0kg 1.10 Laser Output Power & Wavelength 1.10.1 DVD Output power during reading : 0.8mW Out

32、put power during writing : 20mW Wavelength 650nm 1.10.2 CD Output power :0.3mW Wavelength :780nm 1.11 Supported disc type and media speed Disc Media Speeds DVD+R 1x - 16x DVD+RW 2.4x - 4x DVD -R 1x - 16x DVD -RW 2.4x - 4x DVD+R DL 2.4x 1.1. PSU Board 1.1.1. General PRIMARYBACDGDia=3.2+/-0.05 (4x)Kee

33、p 10x10 area as base ofmetal plate for screws170+/-0.2Mains connector95+/-0.15No component, No coppertrack area39+/-0.19+/-0.130.5+/-0.154+/-0.1This screw canbe used as EMCY-capacitorconnection16+/-0.112+/-0.13.5+/-0.1110+/-0.116+/-0.1The PSU board provides the following connection to the rest of th

34、e set: Connector A: Supply/Signal to Analog Board Pin no. Supply / Signal Remarks 1 12VSTBY 2 STBY control 2.5V = supply for conn. B is off (Standby mode) 2.5V = supply for conn. D is on 4.0V = power is good 2.5V = supply for conn. C & G is on 0.5V = supply for conn. C & G is off 11 GND 12 5ND Conne

35、ctor C: not in use Connector D: Supply to Basic Engine Pin no. Supply 1 12VE 2 GND 3 GND 4 5VE Connector E: Supply to HDD Pin no. Supply 1 12VH 2 GND 3 GND 4 5VH ! The Mains must be disconnected from the Set before attempting the procedure mentioned below: The PSU is designed with short-circuit prot

36、ection that will shutdown the power supply. When this happen, the voltage stored in capacitor C1 and C2 will prevent the Power Supply to turn-on, therefore they must be discharged with a screwdriver with high electrical isolation handle before the PSU can function normally again. Note :During the process of discharging the capacitors ,spark can be observed which is typical of the high voltage stored in Capacitor C1 and C2.