Philips-DVD-737-Service-Manual电路原理图.pdf

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1、CLASS 1LASER PRODUCTService ManualServiceServiceServiceDVD737/00/02/05TABLE OF CONTENTSPageTechnical Specifications .1-2Service Aids, Safety Instruction, etc. .1-3Disassembly Instructions fr Reparaturen sind Original-Ersatzteile zu verwenden.ILe norme di sicurezza esigono che lapparecchio venga rime

2、ssonelle condizioni originali e che siano utilizzati i pezzi di ricambioidentici a quelli specificati.“After servicing and before returning set to customer perform aleakage current measurement test from all exposed metal parts toearth ground to assure no shock hazard exist. The leakage currentmust n

3、ot exceed 0.5mA.“CLASS 1LASER PRODUCT3122 110 03420GB Warning !Invisible laser radiation when open.Avoid direct exposure to beam.S Varning !Osynlig laserstrlning nr apparaten r ppnad och sprrenr urkopplad. Betrakta ej strlen.SF Varoitus !Avatussa laitteessa ja suojalukituksen ohitettaessa olet altti

4、inankymttmlle laseristeilylle. l katso steeseen!DK Advarse !Usynlig laserstrling ved bning nr sikkerhedsafbrydere erude af funktion. Undg udsaettelse for strling.2-1DISMANTLING INSTRUCTIONSDismantling of the Front Panel assembly1) Open the Tray and remove the tray cover assy (pos 101-19-1 + 101-19-5

5、) and remove it as shown in figure 1.Note: The Tray can be manually open by inserting aminus screw driver (approximately 9mm) and pushlever in the direction shown in figure 2.2) Loosen the 5 screws to dismantle the Top Cover (pos252)- 2 screws on each side- 3 screws on the Rear Panel (pos 251).3) Un

6、catch 6 catches (2x on side & 2x on the bottom and 2xon the Loader C2) to slide the Front Panel assembly (pos101) as per figure 3.Figure 1Figure 22-2Dismantling of the PSU, Loader Mechanism & MPEG board1) Remove the Tray cover as per instruction to remove theFront panel assembly2) Loosen 4 screws A

7、and 2 catches C2 to remove theLoader Module (pos 1002) as per figure 3.DISMANTLING INSTRUCTIONS3) Loosen 5 screws (2x screw B and 3x screw E) to removethe MPEG board (pos 1003) as per figures 3 and 4.4) Loosen 2 screws D and 2 catches C1 to remove the PSUboard (pos 1001).Figure 3Figure 43-1DVD Regio

8、n codeThere is only 1 version of software (for region 2) in thisrange, therefore no special re-programming is required.However, it is possible to change the region code butdo note that selecting a different region code will notchange the existing setting like TV system, outputformat, etc.Region code

9、 change is done as follows:1) Power up the set and open tray.2) Press button3) Press follow by buttons on theRemote control.where x = numeric 1 to 6 denoting the regions below:1 = USA2 = Europe3 = Asia Pacific4 = Australia, New Zealand, Latam5 = Russia, India6 = ChinaProcedure to view Software versi

10、on and Region code1) Power up the set2) Press button on the Remote control.3) Press and buttons on theRemote control.3) The TV screen will shows:VERSION : DP330.4.19 REG : 2Region codeApplication software (backend)Procedure to upgrade software1) Power up the set and open tray.2) Place upgrade CD-ROM

11、 onto tray and close it.3) The FTD on the set and TV screen will response anddisplay the following:- LOAD TV screen shows: DISC LOADING- DATA TV screen shows: READ- UPGRADE TV screen shows: UPGRADINGfollowed by DONE when it is completed4) The tray opens for you to remove the CD-ROM and theset switch

12、es to Standby.5) The whole process should last less than 5 minutes.3-2No OperationThe player does not operate No OSD and FTD display No picture and sound Check Power supply +5V and +/-12V to the Mpeg board Put the Mains switch to ON 1. Check supply voltages at connector 1202 Pin 1&3 +5V Pin 5 +12V P

13、in 7 -12V 2. Check / Replace cable connection to conn. 1202 3. Check / Replace Power Supply UnitNOCheck Power supply +3V3 and +2V0 to IC 7101 board YES1. Check / Replace safety resistor 3200 2. Check / Replace 3V3 regulator 7206 and transistor 7220 NOCheck RESET signal at pin 24 / 7101 and pin 12 /7

14、100 YES1. Check +5V supply to IC 7233 2. Check / Replace RESET IC 7233NOCheck 27MHz clk input at pin 105 of IC 7101YES1. Check / Replace crystal 1152NOYESCheck SDRAM CLK 108MHz at pin 38 / 7102 1. Check +3V3 supply voltage to IC 7102 2. Check / Replace resistors 3171 3. Check / Replace processor IC

15、7101 Note: There should be mechanical NOMeasure waveform at pin 16 of Flash IC 7100 at Power-on and the waveform should look like in Fig A: During initialization waveform appear for 1 sec and go low for next 1 sec. After start-up-continuous waveform. YESIs the waveform present ? 1. Check +3V3 supply

16、 voltage to IC 7100 2. Check / Replace jumper 4109 3. Check / Replace Flash IC 7100 NOYES1. Check / Replace processor IC 710127MHz CLK1ch11V / div DC50ns / divRESET12.null .null Tch1ch22V / div DC20ms / divSDRAM CLKch1:.null .null freq=.null .null 108MHz1ch11V / div DC10ns / div3. Check / Replace 2V

17、0 regulator 72071.00V / DC200ms / divch1Fig APM3380BTouble Shooting chartsTouble Shooting charts3-3No PictureNo Picture / Sound and FTD display OKCheck Video output from IC7101 Put the Mains switch to ON and play a DVD disc 1. Check RGB data lines connection from processor IC 7101 to VideoBuffer 2.

18、Check / Replace processor IC 7101NOYES1. Check +5VAV to the Video buffer circuitry 2. Check / Replace the components in the Video buffer circuitry. No ColorPicture No Color on RGBand CBVS, Sound andFTD display OKCheck 27 MHz crystal freq within 27MHz 30ppm. Put the Mains switch to ON and play a DVD

19、disc 1. Check / Replace crystal 1152NO YES 1. Check / Replace IC71013-4Touble Shooting chartsNo SoundNo soundPicture and FTD display OKCheck Power supply -12V to the Mpeg board Put the Mains switch to ONand play a DVD disc 1. Check supply voltage at connector 1202 Pin 7 : -12V 2. Check / Replace res

20、istor 3204 3. Check / Replace cable connection to con 1202 4. Check / Replace Power Supply Unit NO Check I2S signalat Audio DAC IC 7201 input YES 1. Check I2S data lines connection from processor IC 7101 to Audio DAC IC7201 2. Check / Replace processor IC 7101 NO Check Audio output at pin 9-12/7201

21、Audio DAC YES 1. Check +5V supply to IC 7201 2. Check PDN (Power Down Mode ) voltage at pin 5/ 7201 +5V 3. Check /Replace R3229 and C2219 4. Check control data input at pin 6-8 of Audio DAC IC 7201 5. Check / Replace IC 7201 NO Check Audio DAC input detectat pin 16 of IC 7201= HIGH YES 1. Check / Re

22、place IC 7201 NO YES Check Audio output at pin 1 & 7 of Audio buffer IC7220 1. Check +/-12V supply to IC 7200 2. Check / Replace buffer IC7220NO PM3380B1Audio OutputCheck the Killsignal at Pin 22 / 7301 LOW1. Check the mute circuitry 1. Check +5 V and -12 V supply to themute circuitry2. Check the components in themute circuitryNO YES YES S3-4-5-61ch1ch11V / div DC50ns / div1.00V / DC500us / div