Philips MCD785/51 Service Manual Download Page 35

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R33

R34

1K/0805

C14

471pF/50V

D12

SB560

80uH/0 .7mm

1000u F/ 10V

CE9

.1K/0805

3.3K/0805

IC4

+ 9-16 V dc

A F9435P

PIN1,2,3

PIN4

PIN5,6,7,8

Q6
C945 SOT-23

A 733 SOT-23

R35

47K/0805

104/50V 0805

C24

MC 34063

TO-6026

ZD3

APM4800SOP-8

R38

10K/0805

1
2
3
4
5
6
7
8
9

9P/2.5

CON2

MCU5V

GND

STB

+17.5V

D+5V/1.5A

+12V/0.5A

+20V/4A

STB

R32

2* 0.1R/1206

Power Board -- Circuit Diagram 2

12-7

Summary of Contents for MCD785/51

Page 1: ... 2 4 Safety Check After Servicing 4 1 6 Standard Notes For Servicing Lead Free Requirements Handling Flat Pack IC 6 1 to 6 4 5 Safety Information General Notes Lead Free 7 Direction of Use 7 1 to 7 4 8 Cabinet Disassembly Instructions 8 1 12 AMP Board 9 Troubleshooting 9 1 to 9 2 10 Block Diagram 10 1 11 Wiring Diagram 11 1 13 Display Board 14 USB and Headphone Board Layout Diagram 12 5 17 Explode...

Page 2: ...8 61 61 79 79 93 93 94 94 96 96 98 98 37 37 12 10 C C C C C M 12 10 05 05 Feature diffrence RDS AMP Board Decoder Board Power Board USB Board Headphone Board DTS VOLTAGE SELECTOR ECO STANDBY DARK Type Versions MCD785 Technical Specification and Connection Facilities 1 1 Display Board Power Board Headphone Board USB Board Decoder Board AMP Board Display Board DVD Loader ...

Page 3: ... Speed 3 Support Philips external iPod docking 4 MP3 Link via headphones jack from PC or MP3 player 5 Headphone Out in front of the set 6 Tuner FM Silicon Lab Si4705 7 Ture Digital Amplifier 8 Rated output power 2x30W 10 THD 2 1 2 Styling Forms and Functions MCD780 can be placed on a tabletop which should have a form factor and footprint that can be easily be located in a 2nd room such as in the b...

Page 4: ... 5 Controls Local Display and LED Indications Control keys on the set are 1 Standby On 2 Eject 3 Play Pause 4 Next 5 Pre 6 Source Disc USB Dock FM Aux MP3 7 Stop 8 Volume Knob There is local display VFD 3 dim level There are only LEDs for indications Standby LED colour Red in Standby mode and Two Blue LED for 2 2 Mechanical General Information The product appearances and functions are defined in t...

Page 5: ...ll withstand electro static discharges on all user accessible parts of the product Reference IEC61000 4 2 For contact discharges Level General kV USA kV Requirement 1 0 2 0 3 No deviations allowed 2 2 4 3 4 Short perceptible deviations allowed 3 8 8 Components damage not allowed For air discharge Level General kV USA kV Requirement 1 0 4 0 6 No deviations allowed 2 4 8 6 8 Short perceptible deviat...

Page 6: ...sions All using figure 8 socket will cater for all versions Versions Region Country SMPS Detachable mains cords 51 1 100 240Vac nom wide range from 90V 264Vac limit used in all versions except India Frequency 47 63Hz Round 2 pin All requirements per defined for each country should be met with sufficient testing 3 1 2 Surge Immunity Lightning Test The product shall withstand mains interference s of...

Page 7: ...c Performance criterion B Variation 0 100 dip at T event 5 Sec Performance criterion C Additional for USA apparatus See 3135 019 8029 Reliability evaluation Variation 0 100 dip at T event 100 mSec in standby mode Performance criterion B Requirement No misoperation and no interference of user in order to guarantee continuation of performed function Reference IEC61000 4 11 For measuring method refer...

Page 8: ...kHz Audio Output 1 Tuner FM 67 5kHz Modulation Limit 6dB Line Out Left Right 2000mV 200mV CD MP3 3dB track Audio Disc 1 Track 1 Headphone 15mW 2 dB RL 32Ω S H 0 2 e v a w e n i s z H K 1 B d 3 B S U AUX1 back 1V 200mV Rin 22kΩ MP3_link front 600mV 200mV Rin 22kΩ IPOD Docking 800mV 200mV Rin 16kΩ e v a w e n i s z H k 1 0 1 D H T t A 1 r e w o P t u p t u O Main Operation for MCD785 all version rms...

Page 9: ...tion Test Signal Specification NTSC PAL Amplitude output 100 White 1Vpp 10 1Vpp 10 0 1 V m 0 0 7 0 1 V m 4 1 7 e t i h W 0 0 1 r a b e t i h W 0 1 V m 0 0 3 0 1 V m 6 8 2 e t i h W 0 0 1 e d u t i l p m A c n y S Burst Amplitude 75 Color bar 286mV 1dB 4dB 300mV 1dB 4dB Burst chroma ratio 100 Color bar 5 5 S N luminance 100 White 60 dB 60 dB S N chroma AM PM 100 Red 57 dB 57 dB 60 dB 57 dB Video Ba...

Page 10: ...CISION 50kHz AERIAL FM PIGTAIL TYPE ANT WIRE 75Ω ELECTRICAL DATA t i n U t i m i L m o N M F f B d 6 2 0 2 t n i o P g n i t i m i L B d 3 Search Tuning Sensitivity at stereo mode 35 41 Search time digital tuning system 60 S z H M 7 0 1 F I B d 1 5 8 4 g n i t e i u Q B d 6 4 o e r e t S 5 4 0 5 m u H n o i t a l u d o M 5 4 0 5 o i t a R N S B d 4 0 e s r e v e R n o i t a c i f i l p m A Distort...

Page 11: ...the pickup lens when the diode is turned 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 Location Inside Top of Blu Ray mechanism Do not look directly at the laser beam coming from the pickup or allow it to strike against your skin Drive Mechanism Assembly Laser Beam R...

Page 12: ... Important Important Safety Precautions Read and understand all instructions before you use your home theater If damage is caused by failure to follow instructions the warranty does not apply Safety Riskof electricshock or fire Never expose the product and accessories to rain or water Never place liquid containers such as vases near the product If liquids are spilt on or into the product disconnec...

Page 13: ...ic products Please act according to your local rules and do not dispose of your old products with your normal household waste Correct disposal of your old product helps to prevent potential negative consequences for the environment and human health Your product contains batteries covered by the European Directive 2006 66 EC which cannot be disposed with normal household waste Please inform yoursel...

Page 14: ... and externally exposed accessible parts RF terminals antenna terminals video and audio input and output terminals 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 accessible parts Use an AC voltmeter to measure across the terminals of load Z See Fig...

Page 15: ...e 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 potential Available ESD protection equipment Complete kit ESD3 small tablemat wristband 4822 310 10671 Wristband tester 4822 344 13999 Be careful during measurements in the live voltage section The primary side of the power supply including the heatsi...

Page 16: ...older paste 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 easy to store and to handle Use only adequate solder tools applicable for lead free solder alloy The solder tool must be able To reach at least a solder temperature of 400 C To stabilize the adjusted temperature at the solder tip To...

Page 17: ... this and more technical information within the magazine chapter workshop news For additional questions please contact your local repair helpdesk How to Remove Install Flat Pack IC 1 Removal With Hot Air Flat Pack IC Desoldering Machine 1 Prepare the hot air flat pack IC desoldering machine then apply hot air to the Flat Pack IC about 5 to 6 seconds Fig S 1 1 2 Remove the flat pack IC with tweezer...

Page 18: ...e 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 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 ...

Page 19: ...lectrostatic charge during unpacking or repair work 1 Ground for Human Body Be sure to wear a grounding band 1 M that is properly grounded to remove any static electricity that may be charged on the body 2 Ground for Workbench Be sure to place a conductive sheet or copper plate with proper grounding 1 M on the workbench or other surface where the semi conductors are to be placed Because the static...

Page 20: ...ns Select programmed radio station Adjust time d Start or pause play e Stop play Erase a programmed radio station In standby mode activate or deactivate demonstration mode f USB socket g MP3 LINK Jack for an external audio device h Headphone socket i VOLUME Adjust volume Adjust time j Disc compartment k Open or close the disc compartment l COAXIAL DIGITAL OUT Digital out jack m HDMI DIGITAL AV OUT...

Page 21: ...med radio stations h Start pause or resume play i CLOCK Set the clock j AUDIO Select an audio language or channel k VOL Adjust the volume Adjust the time l SUBTITLE Select a subtitle language m PROGRAM Program radio stations n DIM Select different levels of brightness o MODE In DISC USB mode select repeat play or random play In DOCK mode select repeat play only p Open or close the disc compartment...

Page 22: ...e Ensure that the colors of the speaker wires and terminals are matched For optimal sound use the supplied speakers only Connect only speakers with impedance that is the same or higher than the supplied speakers Refer to the sectionof thismanual 1 Hold downthe socket flap 2 Insert the stripped part of the wire completely Insert the right speaker wires to R left speaker wires to L Insert the red wi...

Page 23: ... this product to other devices ConnectanHDMI cable not supplied to the HDMI DIGITAL AV OUT jack on this unit the HDMI jack input jack on the device Tip TheHDMI connection providesthe best audio quality Connectacoaxialcable not supplied to the COAXIAL DIGITAL OUT jackon this unit the COAXIAL DIGITAL input jack on the device Connect the audio cables to the LINE OUT L Rjacks on this unit the AUDIO in...

Page 24: ...ed unclamped or desoldered Axx Screw CNxx Jxx CONxx Connector D3 5X12BA is specification of screw Unhook Unlock Release Unplug or Desolder e g 7 A01 seven Screws Fig D1 Fig D2 Fig NO Remove Unhook Unlock Release Unplug Desolder Note 11 A01 D3 X 10 FA 4 A02 D3 X 10 BTH 3 DVD Loader D3 4 DVD Loader Removal ID Loc NO Part D1 2 D2 4 A03 D3 X 8 PA 10 A04 D3 X 10 FA 1 A05 D3 X 10 BTH 4 A06 D3 X 8 BA 1 1...

Page 25: ...d circuit check and change the related components of radio controlled circuit check if power supply of radio is normal check and change related components of power supply circuit check if radio circuit components of around it is normal check and change components of around it No No No No No No No sound from whole unit FLOW CHART NO 3 Yes No Yes No Yes no sound from DVD check if DVD output is norma...

Page 26: ... wire is broken check and change video wire socket No display from display screen check if video socket video wire is normal Decoding is broken check if tie wires of laser head ass y is loosen and broken laser head ass y broken no image from DVD change capacitance change display screen check if display screen is broken Yes check if the capacitor voltage of filaments filter is short circuit Yes che...

Page 27: ...OTOR TRAY SW TRAY SW M ___ CD DOOR Tact switches X 7 PICK UP SONY IIC_MPEG LDO AMC1117 3 3V D5V 1 2V MPEG_ON MPEG5V LDO AMC1117 woofer woofer dome tweeter 30W 2 dome tweeter TRAY IN OUT HP MUTE MUTE_9831 D3 3V A5V A5V A3 3V SD OVL REVERSE RST_AMP STBY 0 15W 17V MUTE HPMUTE A3 3V D5V MCU 3 3V MCU 3 3V D5V D5V 27V M5V A12V D3 3V D1 2V D3 3V D3 3V 5V APM9435 5V 12V 29V GND ECOP IR STB CLK DATA STB5V ...

Page 28: ... Board CN501 J501 J502 CN502 AUX L AUX R GND MUTE GND H R H L CN301 Display Board CON4 GND GND 12V D 5V D 5V MCU 5V GND GND GND STB 12V 20V 20V D 5V MCU 5V CON2 Power Board SPK Board P1 CON3 CON6 P8 CON5 CON6 CN2 P1 CN3 P6 J1 J9 CN6 CON1 P2 P2 CON7 CON4 CN1 CN6 AMP Board Decoder Board 11 1 11 1 ...

Page 29: ...50 R41 100 R55 33k R64 0 C153 100pF L29 FB 1K CE29 100uF 10v C133 82P C70 330P R131 6 8K R147 10K 6 5 4 3 2 1 7 8 9 10 11 12 13 14 15 16 CN6 FPC16P 6x2 0 W HOUSING C167 0805 4 7uF 10V R274 10K L46 FB 1K H1 SYP580 C230 104 C121 104 R92 15K R207 NC NC NC 100R 1 2 CON1 ST 013 C149 0805 4 7uF 10V TP50 TP58 C62 104 R35 6 2R R226 470 C146 1uF R79 6 8K R43 100 2 1 3 Q5 8050 DIP C63 470uF 16V R172 10K C84...

Page 30: ...AMP Board Layout Diagram 12 2 12 2 ...

Page 31: ...8 S10 31 S13 1 VF1 32 S14 29 S11 30 S12 33 S15 34 S16 35 S17 36 NC 37 NC 38 NC 39 VF2 40 VF2 VFD301 1 2 3 4 5 6 7 8 9 10 CN301 10P 2 0 R322 4 7k LED301 1 REM 2 GND 3 VCC S301 IR C309 104 1 2 10 9 7 6 3 4 5 T902 BZ1 L305 200UH Q301 D965 Q302 D965 R319 1K R320 1K R378 C308 104 100R C307 220U 35V D301 FR104 R381 R379 100R 100R 15R DZ301 3V C301 104M D302 IN4148 R315 10k R316 DZ302 27v 1 G 2 B 3 A ENC...

Page 32: ...Display Board Layout Diagram 12 4 12 4 ...

Page 33: ...1 GND J401 USB HOST GND U D VBUS D 1 2 3 CN501 3P 2 0 J202 C J502 A J202 B 3 2 1 J501 SP 2JCK 1 2 3 4 CN502 4P 2 0 HP L 1 HP R 1 AUX R AUX L PH MUTE 1 USB and Headphone Board Circuit and Layout Diagram USB Board Headphone Board 12 5 12 5 ...

Page 34: ... 1KV L5 10uH 0 6mm CE4 1500u F 25V R18 19 20 R21 4x120R 1206 CE5 2 680u F 25V D10 D9 CE7 1500uF 25V CE8 1000uF 25V L3 10uH 0 6mm 17 5V 3 5A GND C12 102 500V 1206 R30 R31 47R 1206 2 12V 0 5A GND A C9 104 50V 1206 C11 104 50V 1206 2 SF34 B CE13 220u F 16V C10 104 50V 1206 1 3 2 4 Vin Vout Gnd En C STB IC6 KA78L12 D5 FR157 5A 800V Q1 EL817 IC2 A C5 471 50V 0805 R16 100K 0805 C3 471 50V 0805 1 2 3 4 5...

Page 35: ... 16Vdc Q7 AF9435P PIN1 2 3 PIN4 PIN5 6 7 8 Q6 C945 SOT 23 Q5 A733 SOT 23 R35 47K 0805 C15 104 50V 0805 C24 NC MC 34063 TO 6026 ZD3 NC B Q4 APM4800SOP 8 R38 10K 0805 1 2 3 4 5 6 7 8 9 9P 2 5 CON2 MCU5V GND GND GND STB 17 5V 17 5V D 5V 1 5A 12V 0 5A 20V 4A STB R32 2 0 1R 1206 G D S Power Board Circuit Diagram 2 12 7 12 7 ...

Page 36: ...Power Board Layout Diagram 12 8 12 8 ...

Page 37: ... LIMIT TROUT STBY TROPEN IOA Gxyz_D1 Gxyz_D2 V1 1 2009 02 17 1 Modify CE31 from 47uF to 220uF for power noise improve 2 Add 100 ohm resistance R160 and R161 to XI and XO nets for tune DPD performance 3 Delete Q11 for costdown 4 change L8 from 100uH to FB 200ohm Play DVD CD1 2V ᓔᴎ130 140mA 〇ᅮ 162 8mA гᰃ standby20 23mA standby20 23mA Play DVD3 3Vᓔᴎ290 300mA 〇ᅮ 360mA гᰃ Play DVD5V ᓔᴎ570mA 〇ᅮ 800mA ⶀ䯈...

Page 38: ... 0R R476 330 1 2 3 4 P1 USB 4P 90 R47 0 CB20 0 1uF CE10 470uF 6 3v TP5 C23 330pF C23 330pF 1 2 CE9 220uF 6 3v CB19 0 1uF C22 0 1uF C22 0 1uF C8 0 1uF 1 2 CE14 47uF 16v IN 1 GND 2 EN 3 FAULT 4 ILIM 5 OUT 6 U410 TPS2552DBVT C41 ESD C9 6800pF L16 FB 0603 TP35 TP35 TP6 RFE 127 RFF 128 AVDD12_2 1 AVDD33_1 2 XTALI 3 XTALO 4 V20 5 REXT GPO5 7 MDI1 8 LDO1 9 LDO2 10 AVDD33_2 11 DMO 12 FMO 13 TRAY_OPEN 14 T...

Page 39: ... DVD196mA CD190mA DVD377mA CD358mA R54 10k CB34 0 1uF C28 15pF NC CB30 0 1uF 1 2 D12 IN4004 SMD R77 10k TP43 VINFC 1 VOTR 9 VOTR 10 VOSL 12 REGO2 3 TRB1 2 VOTK 15 REV 7 VOFC 14 VOFC 13 VCTL 21 VCC2 19 NC 20 NC 24 BIAS 27 FWD 6 VINSL 4 REGO1 5 MUTE 28 VCC 8 VOSL 11 VOLD 17 VOLD 18 VOTK 16 VINLD 23 GND 22 TRB2 25 VINTK 26 G1 29 G2 30 U5 5888S HSOP28 SMD R63 10k L21 FB L20 FB C29 0 1uF R64 10k 1 2 R6...

Page 40: ...D NC D24 NC R118 47K R133 0 NC R104 0R R122 220 R129 0 NC 1 2 D6 ESD NC R85 75 NC 2 1 3 Q19 2N3906 R119 47K R115 27K R106 75 NC L30 FB 0603 C34 47pF NC 1 2 D8 ESD NC L23 1 8uH SMD NC R112 4 7K D18 NC D16 NC D23 NC S1A 2 S2A 3 S1B 5 S2B 6 S1C 11 S2C 10 S1D 14 S2D 13 IN 1 EN 15 VDD 16 DD 12 DC 9 DB 7 DA 4 GND 8 U6 PT2328 NC SSOP16 R128 0 NC C39 47pF NC D17 NC R81 75 NC D26 NC L32 FB 0603 1 2 D11 SS1...

Page 41: ...Decoder Board Layout Diagram 12 13 12 13 ...

Page 42: ...7 S001 S004 S002 S003 Standby Button S006 ALU Front Panel Spring Filter Lens PCB3 Bottom cover Screw Screw Screw Plastic Foot Rubber Foot PCB7 Screw Screw Screw Screw S009 Back cover PCB6 PCB5 DVDM Dust cover Aluminual Top Cover 13 1 13 1 ...

Page 43: ...Revision List Revision List Version 1 0 Initial Release 14 1 ...

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