Philips-MCD-712-Service-Manual(1) 电路图 维修手册.pdf

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1、DVD Home Theater System TABLE OF CONTENTS 3141 785 34240 XL 09 07 2008 Location of PC Boards . 1-1 Electronic Specification . 1-2 Measurement Setup . 2-1 Service Aids . 2-2 Items Of Safety Attention . 2-3 to 2-4 Instruction On CD Playability .2-5 to 2-6 Software Version Check include 60%Tin 40% lead

2、. To maintain soldering iron and its tin very well. Use the wire brush but not spray cleaners such as Freon to clean the soldering surface. Adopt the melting ways: a) The temperature of soldering horn range from 350 to 390. b) Heat up the parts pin, until soldering tin is molten. c) Use the desolder

3、ing pump to suck out the molten soldering tin quickly. Note: Quickly operating can prevent superheating the electronic-plating copper. Adopt the following soldering ways. a) The temperature of soldering horn range from 350 to 390. b) Hold the soldering iron and welding rod pointed to the parts pin,

4、until soldering tin is molten. Then move the soldering horn quickly to the location that you want to solder. Note: Quickly operating can prevent superheating electronic-plating copper of printed circuit board. c) Check the welting zone carefully, then brush the unwanted soldering tin away with a wir

5、e brush. Unsolder/Replace IC Notes: Do not touch the IC body directly with soldering iron. Pre-heating soldering iron at about 130 for some seconds avoid the damages caused by IC heated suddenly. For normal IC, the temperature of the solder horn is about 350, and can increase to 390 for some bigger

6、IC. Use the filamentous welding rod and solder which thickness is about 0.3mm to solder thin IC and add the solder as needed. Replace the IC carefully and solder it quickly. After unsoldering the IC, clean the basic board carefully to ensure the board is usable. Prevent the molten soldering tin drip

7、ping on the board which will engender a short circuit. Aim at the first terminal and fix it, then aim at other terminals for correctly inserting IC. You can solder quickly just like this. Before operating, please make sure the IC is unusable. Do not unsolder repeatedly. During soldering especially s

8、oldering a thin IC with many pins, check the weld carefully. After replacing, check that there is not soldering leak, rosin joint, short circuit and so on. Unsolder: Use the soldering iron to melt the soldering tin. Before unsoldering IC, suck out the molten solder tin. Replace? Make sure all the IC

9、 pins are on their correct location, then solder. Use a wire brush to clean the welting zone. Items of Safety Attention 2-4 Unsolder/replace diode After unsoldering the unusable diode, nip its body and take it out. Bend the two pins and the diode is vertical to circuit board. Check the polarity of t

10、he diode, then place its pins to the correct location. Pin the joint and solder it. Check the weld carefully. If the surface of the weld is not smooth, please solder it again. Repair electro-plating copper Repair the warpage copper as following: Use a sharp knife to scrape the unusable copper and th

11、e unwanted solder off. Make one side of the lead bent like a small “U”, then put the “U” to IC pins and solder. Another side of the lead is extended until overlap with the well copper then solder. Cut the unwand lead. The flow of repairing DVD part No sound or sound distorted when playing, please ch

12、eck the DVD part. Notes for taking down the laser head Before operating, read these notes as following to prevent the static charges damageing the laser head when reading the laser led. Lay an electric rug on the working table and the replaced parts are packed in black package. The electric rug is g

13、rounding by put on the electric base. Then put your hand on the electric rug and connect the static handle with the electric rug. Make sure the electric rug and the working table are grounding. During the operating, do something such as operating on the electric rug to avoid the static charges touch

14、ing the laser parts. After that, you can begin to take the laser parts down. When replace the laser parts, please do something to make a short circuit and remenber to cut the short circuit off after replacing. Set remains closed! N Y Play a CD for at least 10 minutes Y playability ok ? N playability

15、 ok ? add Info for customer SET OK check playability N Y playability ok ? check playability check playability return set Customer complaint CD related problem fast lens cleaning ? ? ? For flap loaders (= access to CD drive possible) cleaning method? is recommended Exchange CDM ?- ? For description -

16、 see following pages 2-5 Instruction On CD Playability PLAYABILITY CHECK For sets which are compatible with CD-RW discs use CD-RW Printed Audio Disc.7104 099 96611 TR 3 (Fingerprint) TR 8 (600 Black dot) maximum at 01:00 playback of these two tracks without audible disturbance playing time for: Fing

17、erprint10seconds Black dot from 00:50 to 01:10 jump forward/backward (search) within a reasonable time For all other sets use CD-DA SBC 444A.4822 397 30245 TR 14 (600 Black dot) maximum at 01:15 TR 19 (Fingerprint) TR 10 (1000 wedge) playback of all these tracks without audible disturbance playing t

18、ime for: 1000 wedge10seconds Fingerprint10seconds Black dot from 01:05 to 01:25 jump forward/backward (search) within a reasonable time CUSTOMER INFORMATION It is proposed to add an addendum sheet to the set which informs the customer that the set has been checked carefully - but no fault was found.

19、 The problem was obviously caused by a scratched, dirty or copy-protected CD. In case problems remain, the customer is requested to contact the workshop directly. The lens cleaning (method ?) should be mentioned in the addendum sheet. The final wording in national language as well as the printing is

20、 under responsibility of the Regional Service Organizations. LIQUID LENS CLEANING Because the material of the lens is synthetic and coated with a special anti-reflectivity layer, cleaning must be done with a non-aggressive cleaning fluid. It is advised to use “Cleaning Solvent The actuator is a very

21、 precise mechanical component and may not be damaged in order to guarantee its full function. Clean the lens gently (dont press too hard) with a soft and clean cotton bud moistened with the special lens cleaner. The direction of cleaning must be in the way as indicated in the picture below. Before t

22、ouching the lens it is advised to clean the surface of the lens by blowing clean air over it. This to avoid that little particles make scratches on the lens. Instruction On CD Playability 2-6 Disassembly Diagram 3-13-1 2, Open the Top Cabinet A1. Loose 4pcs screws(3x15PA) A1. Loose 1pc screw(3x10FA)

23、 A2. Loose 1pc screw(3x10PA) A1. Loose 3pcs screws(3x10FA) 3, Remove the DVD Loader Mechanism A. Loose 4pcs screws(3x15BA) 7, Remove Front Cabinet A. Loose 2pcs screws(3x12BA) 8, Remove the Display Board A. Loose 8pcs screws(2.6x8BA) A1 A A A2 A1 A2 1.Open the DVD Door and loose 2 clipps to remove t

24、he door 5.Remove the Power Board A1. Loose 2pcs screws(3x6PT) A2. Loose 3pcs screws(3x12FA) A3. Loose 1pc screw(3x6FMTT) 6.Remove the Decoder Board A 4, Remove the SCART & AUX Board A. Loose 3pcs screws(3x12FA) A1 A A A2 A3 9, Remove the Volume Board A. Loose 3pcs screws(2.6x8BA) A 10, Remove the US

25、B & Earphone Board A. Loose 4pcs screws(2.6x8PWT) A 3-13-1 Software Version Check & Upgrading 2 2 Not power Check if the Power Cord is connected properly Check if there is power at the AC outlet Not sound The speakers are connected correctly Check if the Main Board has been provided voltage Check if

26、 there is output voltage at the AMP Board Check if there is output voltage at the Main Board Replace a new one Switch to the Timer No display Check if the Dc output voltage is about 27V Adjust the volumeCheck the files or folders in USB or other devices do not exceed the certain limit Time/Clock doe

27、s not work Plug in the power cord Reset the Time/Clock Not picture on HDMI connection Check if the HDMI cable is usable Replace a new HDMI cable Replace a new AMP Board Check if the USB or other devices are connected Check if the USB or other devices are compatible Check if the data wire which conne

28、cted to the Main Board has been provided voltage Check the data wire which connected the Main Board, if has provided voltage Check if the Transistors have been provided voltage Check if there is voltage supplied to the USB Board Check if the CPU IC has provided voltage Check if the VFD Board has bee

29、n provided voltage N Replace a new Main Board N N Replace a new Power Adapter N Replace a new one N Replace the IC PT6311 /SC16311/CD16311 N N Replace the Main Board N Check if the CPU IC has provided voltage Replace the Main Board N Change to ues the new materials N Change to uesable one N Check if

30、 the IC CX1117 has provided voltage Replace a new one N Check if there is voltage at the CPU IC Replace the Main Board N Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Malfunction Follow Check Chart 3-23-2 Block Diagram 5-15-1 AUX BOARD AUXL AUXR AUXL IN EC06-05 EJS89L716 24C02 CPU/ P9228PT16311VFD / PBLOCK CD KEY

31、 / PBLOCK DVD +5V AMP PT2314 PT2309 TEA8947 CPU BOARD VFD DISPLAY BOARD POWER BOARD SPEAKERS DVD LOADER MECHANISM TUNER BOARD MPEG BOARD DOOR SWITCH DOOR MOTOR AUXR IN TURNING IN CD IN FM D+8V D+5V D+5V +5V LCH RCH STBY & MUTE STBY & MUTE CONTROL HEARPHONE MUTE +5V DIN CLK STB DOUT -24V D+12V -21V -

32、27V+27V L R +21V POWER MUTE +12V REMOTE / PSENSOR TUNER POWER CONTROL CD ON SDA SCL 6.3V KS2 KS2 K1 K3 K4 K2 6.3V 6.3V -24V 6.3V CPU MUTE REM TUNER ON 6-1 6-1 Wring Diagram DVD LOADER MECHANISM MPEG+CPU BOARD SCART BOARD HEARPHONE BOARD LAMP BOARD VOLUME LAMP BOARD VOLUME BOARD USB BOARD VFD DISPLAY

33、 BOARD EJS89L716 VCC A6 RFIN1 B6 FREQIN C1 RFIN2 C6 RFGND C5 LOOP SW A2 CPOUT A1 LO1 A3 LO2 A4 VccVCO A5 SWPORT B1 BUSEN C2 VREFDIG E3 CLOCK E2 DATA E1 DGND D3 VDD D1 DGND D2 INTX B2 TMUTE D6 VAFR E6 VAFL E5 MPXOUT E4 AGND B5 TIFcent re D5 IC1 TEA5760UK C8 47pF C7 27pF C6 100pF L1 120nH C10 103 C13

34、104 C16 103 R15 10K R18 100K C11 103 L7 39nH SW1 BUS_ENABLE R19 10R C17 103 C15 103 SCL SDA INTX C12 104 R22 330 C18 47uF +5V3.0V 3.0V MPX C5 224 C4 224 Q2 9014 Q3 9014 R4 4.7K R5 4.7K R3 1M R1 47 R13 1K R14 1K C1 22uF C2 224 C3 224 R2 1M +5V LOUT ROUT DZ1 3.6V R6 4.7K C19 47uF/6.3V ROUT LOUT SGND +

35、5V SCL SDA SGND 1 2 3 4 5 6 7 8 CN1 8P L5 600R L4 600R RFIN R8 68k CLOCK X1 32.76 8K R12 1M C20 12pF C21 39pF C14 10pF C9 104 R11 10M R16 10K CLOCK 3.0V L8 10uH Q1 8050 1A 1 GND 2 2A 3 2Y 4 VCC 5 1Y 6 IC274HC2G04 C22 22uF C23 100pF C24 22uF C25 223 Tuner Board - Circuit Diagram 7-17-1 Tuner Board -

36、Layout Diagram 7-27-2 8-18-1 VFD Display Board - Circuit Diagram R254 47K R255 33K R256 33K R257 33K R258 33K K4 K3 K2 K1 D205 4148 D2074148 S1 S2 S3 S4 S5 S6 S7 S8 S9 S1 S2 S3 S4 S5 S6 S7 KS2 +5V S1 S2 C217 104P R229 0.5/0.5 C203104P C200 104 SW200 STANDBY VF1 1 VF1 2 S1 3 S2 4 S3 5 S4 6 S5 7 S6 8

37、S7 9 S8 10 G1 11 G2 12 G3 13 G4 14 G5 15 G6 16 NC 17 NC 18 NC 19 NC 20 G7 21 G8 22 G9 23 G10 24 G11 25 G12 26 S9 27 S10 28 S11 29 S12 30 S13 31 S14 32 S15 33 S16 34 VF2 35 VF2 36 VFD200 NE-1300CD-3.G S10 S11 S12 S13 S14 S15 S16 G12 G11 G10 G1 G2 G3 G4 G5 G6 G7 G8 G9 G2 G3 G4 G5 G6 G7 G8 G9 S12 S11 G

38、11 G10 S8 G1 S10 S9 G12 -28V VF2-1 VF1-1 D2064148 S3KS3 R228 0.5/0.5W C201 104 KS3 R2594K7 R23110K R23210K K1 K2 K3 K4 KS2 +5V SW204 SOURCE SW203 PRERET- SW202 PRERET+ SW201 OPEN SW207 PRE SW206 PLAY SW205 PROGRAM KS2 K1 K2 K3 K4 KS3 S13 S14 S15 S16 R208 4.7K LED200 ECO-POWER REM 1 GND 2 Vcc 3 S200

39、REMOTE REM GND +5V R26047 C219 47uF USB LED USB LED +5V 1 2 10 9 7 6 3 4 5 B200 BZ1 L201 200UH C232 470/16V R2261K R227 1K R203 100 C233 104 C235 220U/35V D208 FR104 R205 100 R204 100 DZ200 6.2V/1W D204 4148 C234 473M +5V ECO-power -28V VF2-1 VF1-1 +5V 1 2 3 4 CN208 TO-USB SW208 DSC SW209 NES D209 4

40、148 DS-STB1 DS-DAT DS-CLK DS-STB1 DS-DAT DS-CLK REM +5V ECO-POWER GND 1 2 3 4 5 6 7 CN? 7P R210 15 R211 10K R224 X R206 0 R207 0 C202 104 C204 104 C205 47uF D201 4001 SW1 1 SW2 2 SW3 3 SW4 4 DOUT 5 DIN 6 IC 7 CLK 8 STB 9 KEY1 10 KEY2 11 KEY3 12 KEY4 13 Vdd 14 S1/KS1 15 S2/KS2 16 S3/KS3 17 S4/KS4 18

41、S5/KS5 19 S6/KS6 20 S7/KS7 21 S8/KS8 22 S9/KS9 23 S10/KS10 24 S11/KS11 25 S12/KS12 26 S13 27 S14 28 S15 29 S16 30 S17/G12 31 S18/G11 32 Vdd 33 VEE 34 S19/G10 35 S20/G9 36 G8 37 G7 38 G6 39 G5 40 G4 41 G3 42 G2 43 G1 44 Vdd 45 LED5 46 LED4(BBE) 47 LED3(POWER) 48 LED2(FANCT) 49 LED1(7507RST) 50 Vss 51

42、 OSC 52 IC203 uPD16311 Q208 8050 Q209 8050 8-28-2 VFD Display Board - Layout Diagram 9-19-1 Power Board - Circuit Diagram IN4148 IN4148 HP-MUTE MUTE1 MUTE D10 D5 STANDBY R56 C23 C35 C34 C33 R72 4.7K/1206 47uF/16V 1uF/25V 220uF/16V CON8 C30 220uF/16V R59 C37 R74FRIN MUTE1 4.7K/1206 1uF/25V 100K/1206

43、HP-MUPTE LO 1 2 3 4 RO AGND 2.0/4P +12V MUTE FRIN FLIN R43 R67 R68 MUTE2 C45 C26 R42 D114.7K/0805 C21 LOUT+ ROUT+ SWOUT- R7 R8 R9 R10 C56 104/50V 1206 C55 104/50V 1206 C54 104/50V 1206 C53 L5L4 DGND 104/50V 1206 2.2 1/8W 2.2/1206 2.2/1206 2.2/1206 SWOUT+ 2.2uF/25V C22 220uF/25V C18 22uF/25V IN4148 2

44、23/50V 0805 R4 LOUT+ LOUT- SWOUT- SWOUT+ 4.7K/0805 R40 270 1/6W R44 15K/0805 DZ1 12V 1/2W R3 1.5K 1/6W R39 +22V 10K 1/6W 223/50V 0805 2.2K/1206 2.2K/1206 R48 C20 10uF/16V 1K/0805 4.7K 1/16W HP-MUTE FLIN 10uF/25V B C E B C E Q8 8050 B C E Q14 9014 B C E Q13 8050 B C E Q5 8050 B C E Q6 8050 Q7 8050 R5

45、1 R45 R46 +12V MUTE2 47K 1/6W 470 / 1206 R49 47K/0805 R15 R62 C47 C50 102/50V 1206 47K 1/6W 47K 1/6W TDA8947J IC3 22K / 1206 ZD2 5.1V 10K 1/8W R71 R70 R65 C29 1uF/25V R69 4.7K 1/8W S08 1 2 3 4 PT2309 C36 C52 220uF/16V 104/50V 0805 100R 1/6W 9-29-2 Power Board - Circuit Diagram 9-39-3 Power Board - C

46、ircuit Diagram 10 - 210 - 2 Power Board - Layout Diagram 9-49-4 16:9 ASP=7.5V-8V 4:3 ASP=12V RGB V/S=3V VIDEO V/S=0V ? ML MR B ASP12V G R RGB CVB1 GND R1206100 R1207100 R1205 10K R1204 10K 21 1.R-CHOUT 2.R-CHIN 3.L-CHOUT 4.AUDIO GND 5.BLUEGND 6.L-CHIN 7.BLUE 8.12 V 9.GREENGND 10.CLOCK 11.GREE N 12.R

47、EMOTE 13.REDGND 14.REMOTEGND 15.RED 16.FS 17.VIDEO GND 18.FSGND 19.VIDEO OUT 20.VIDEO IN GND J1201 SCART-101(HUAHUI) GND R G B CVB1 1 2 3 4 5 6 7 8 9 10 CN1201 15P RGB ML MR ASP12V GND G 1 B 2 A 3 ENCODER800 ENCODER 1 2 3 CN202 VOL BLOCK ROTA ROTB VGND 1 3 2 CN100 RCA-2P RIN LIN 1 2 3 CN101 2.0/3p G

48、ND AUX BLOCK 1 2 3 4 CN1001 vbus 1 D- 2 D+ 3 GND 4 Shield 5 GND 6 J1001 USB GND US+ US- +5V C1002 10uF/16V USB LED701LED702LED703 R700 220 R701 220 R702 220 1 2 CN722 LED BLOCK Small Boards - Circuit & Layout Diagram 10-110-1 Decoder Board - Circuit Diagram 11-111-1 DVD/ON FM5V DVD/ON URST# URST# FM5V URST# DVD/ON VCCVCC_TUN 25V FM5V A5V DV33 V33 +5VS DV33 +5VV 89L_3V3 VCC RFV33 VCC_25V25V FB1 FB/1206 L5