Philips-MCD-750-Service-Manual.pdf

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1、DVD Micro System MCD750/93 TABLE OF CONTENTS 3141 785 32941 DB 0822 2008 Location of PC Boards . 1-1 Specification. 1-2 Measurement Setup . 1-3 Service Aids . 1-4 Instruction On CD Playability .1-5 to 1-6 Software Version Check & Upgrade. 2-1 Malfuction Check Chart . 2-2 Decoder Board . 8 Disassembl

2、y Diagram.3-1 Block Diagram . 4-1 Wiring Diagram. 4-2 VFD Display Board .5 Circuit diagram . 5-1 Layout diagram . 5-2 TUNER Board .7 USB & AUX Board .6-1 Circuit diagram . 7-1 Layout diagram . 7-2 Circuit diagram . 8-1 to 8-6 Layout diagram .8-7 to 8-8 Explode View.9-1 Service Partlist .10-1 AMPLIFI

3、ER Rated Output Power . .2 x 25W RMS Signal-to-noise ratio. 65 dBA Frequency response . 50Hz - 3 dB+/-2 20KHz Aux Input.0.5V RMS 47kohm DISC LaserType. Semiconductor Disc Diameter. 12cm/8cm Support Disc . DVD,DVD-R,DVD-RW,DVD+RW,CD-DA,MP3,CD-RW Audio DAC .24Bits / 44.1kHz Total Harmonic Distortion.

4、28dB Image Rejection .25dB Total Harmonic Distortion. 3% Signal to Noise Ration .?BA SPEAKERS Speaker Impedance . 8ohm Speaker Driver, base.4 Speaker Driver, tweeter .BUZZER Frequency Response.50Hz -3dB+/-2 20KHz GENERAL INFORMATION Total Output power .? ? ? ? ? W RMS AC Power.220-230? Operation Pow

5、er Consumption . 25W Standby Power Consumption.4W Eco Standby Power Consumption .1W Headphone Output . 2X15mW 32ohm USB Direct. Version 1.1 Dimensions Main unit (w x h x d)? Speaker box (w x h x d).115x152x204mm Weight With Packing.7.5 KG Main Unit .1.2KG Speaker box . 2.7KG Net Weight. ? Specificat

6、ions and external appearance are subject to change without notice. 1-2 Specification 1-3 LF Generator e.g. PM5110 Recorder Use Universal Test Cassette CrO2SBC419 4822 397 30069 LEVEL METER e.g. Sennheiser UPM550 with FF-filter S/N and distortion mete e.g. Sound Technology ST170 L R DUT or Universal

7、Test Cassette FeSBC420 4822 397 30071 LEVEL METER e.g. Sennheiser UPM550 with FF-filter S/N and distortion meter e.g. Sound Technology ST1700B L R DUT CD Use Audio Signal Disc (replaces test disc 3) SBC429 4822 397 30184 Bandpass 250Hz-15kHz e.g. 7122 707 48001 LF Voltmeter e.g. PM2534 DUT S/N and d

8、istortion meter e.g. Sound Technology ST1700B Frame aerial e.g. 7122 707 89001 Tuner AM (MW,LW) To avoid atmospheric interference all AM-measurements have to be carried out in a Faradays cage. Use a bandpass filter (or at least a high pass filter with 250Hz) to eliminate hum (50Hz, 100Hz). RF Genera

9、tor e.g. PM5326 Ri=50? Bandpass 250Hz-15kHz e.g. 7122 707 48001 LF Voltmeter e.g. PM2534 DUT RF Generator e.g. PM5326 S/N and distortion meter e.g. Sound Technology ST1700B Use a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz). Ri=50? Tuner FM MEASURE

10、MENT SETUP 1-4 SERVICE AIDS GBWARNING All ICs and many other semi-conductors are susceptible to electrostatic discharges (ESD). Careless handling during repair can reduce life drastically. When repairing, make sure that you are connected with the same potential as the mass of the set via a wrist wra

11、p with resistance. Keep components and tools also at this potential. ESD CLASS 1 LASER PRODUCT GB Safety regulations require that the set be restored to its original condition and that parts which are identical with those specified, be used Safety components are marked by the symbol !. Lead free Set

12、 remains closed! N Y Play a CD for at least 10 minutes Y playability ok ? N playability 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 1 2 3 For flap loaders (= access to

13、 CD drive possible) cleaning method 4 is recommended INSTRUCTIONS ON CD PLAYABILITY 1-? Exchange CDM 1- 4 For description - see following pages 1 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) maxim

14、um at 01:00 playback of these two tracks without audible disturbance playing time for: Fingerprint ?10seconds 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 (Finge

15、rprint) TR 10 (1000 wedge) playback of all these tracks without audible disturbance playing time for: 1000 wedge ?10seconds Fingerprint ?10seconds Black dot from 01:05 to 01:25 jump forward/backward (search) within a reasonable time 2 CUSTOMER INFORMATION It is proposed to add an addendum sheet to t

16、he set which informs the customer that the set has been checked carefully - but no fault was found. 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 3) should be

17、 mentioned in the addendum sheet. The final wording in national language as well as the printing is under responsibility of the Regional Service Organizations. 4 LIQUID LENS CLEANING Because the material of the lens is synthetic and coated with a special anti-reflectivity layer, cleaning must be don

18、e with a non-aggressive cleaning fluid. It is advised to use “Cleaning Solvent The actuator is a very 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 l

19、ens cleaner. The direction of cleaning must be in the way as indicated in the picture below. Before touching 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. INSTRUCTIONS ON CD PLAYABILITY 1-? 2-1 So

20、ftware Version Check & Upgrade MCD750 Vxx Upgrade software Software check 3.Press SYSTEM on the remote open menu, press Left or Right to select “Preference Page”, TV screen showing as below: Press Up or Down to select “Default” on remote, Press OK to exit reset. Software upgrade finish. Input passwo

21、rd “811502” on remote, TV screen showing as below: Upgrade File detected -Preference Page- TV type PAL Audio CHI English Subtitle CHI French Disc menu CHI Spanish Parental Chinese Japanese Default Korean Russian Tjai Upgrade? Press PLAY to start Upgrading CPU version check 1.Downloading the software

22、 form Philips support website 1.Keep press PLAY/PAUSE and STOP buttons,plug into the power cord at one time, TV showing as below: 2.Put in the Software CD Disc or USB,when it is loading, the TV screen showing as below: Waiting half to one minute,till the TV screen showing disappear. Turnoff electric

23、al source and reopen. Ver : Date Time Region code MCD750 / xxxx mm dd yyyy hh : mm : ss x 2-2 Malfunction follow check chart e z i r p , f f o r e w o P . r o o d D V D n e p o , n o r e w o P . A n e h t d n a , t e e f r e b b u r f o k c o l f o e c a l p o w t . r o o d D V D e v o m e r n i d e

24、 t a c o l h c i h w s w e r c s n e s o o L . B 0 1 - T X R O T r e v o c p o t f o t f e l e h t . ) S C P 2 ( I N 0 . 6 X 0 . 3 T T T S n i d e t a c o l h c i h w s w e r c s n e s o o L . C 0 1 - T X R O T r e v o c p o t f o t h g i r e h t . ) S C P 2 ( I N 0 . 6 X 0 . 3 T T T S k c a b e h t

25、 n i d e t a c o l h c i h w s w e r c s n e s o o L . D I N 0 . 6 X 0 . 3 B T T S 0 1 - T X R O T r e v o c p o t f o . r e v o c p o t e v o m e r d n a , ) S C P 2 ( ) S C P 4 ( A W P 0 1 X 3 s w e r c s n e s o o L . E . r e d a o l D V D e v o m e r o t A B C . ) S C P 2 ( T T M B 5 X 3 t e n i

26、 b a c f o s w e r c s n e s o o L . F e d i s e h t n i d e t a c o l h c i h w s w e r c s n e s o o L . G . ) S C P 2 ( T T M F 5 X 3 t e n i b a c f o e h t n i d e t a c o l h c i h w s w e r c s n e s o o L . H 0 . 6 X 0 . 3 0 1 - T P T T S X R O T l e n a p r a e r . ) S C P 2 ( 3 B A e h t n

27、 i d e t a c o l h c i h w l a n i m r e t f o s w e r c s n e s o o L . I 0 . 0 1 X 0 . 3 P 5 . 1 0 1 - T X R O T S P I L I H P l e n a p r a e r . ) S C P 6 ( 3 B A P T T S X R O T l a n i m r e t r e n u t f o w e r c s n e s o o L . ) S C P 1 ( 3 B A 0 . 6 X 0 . 3 0 1 - T o t ) S C P 4 ( M B 5 X

28、 3 s w e r c s n e s o o L . J . d r a c r e d o c e d e v o m e r ) S C P 6 ( A P 8 X 6 . 2 s w e r c s n e s o o L . K . d r a o b y a l p s i d e v o m e r o t . ) S C P 1 ( e m u l o v f o w e r c s e h t e v o m e R . L D E F G H I J K L Disassembly Diagram 3-1 3-1 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

29、 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

30、 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

31、 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 5-2 5-2 VFD Display Board-Layout Diagram USB BOARD 1 2 3 4 1 0 3 N C s u b v

32、1 - D 2 + D 3 D N G 4 d l e i h S 5 D N G 6 1 0 3 J B S U u - D N G + D - D s u b v 1 0 5 R 0 6 5 R503 0 2 0 5 R 0 6 5 R504 0 1 3 2 1 0 5 J P 2 - A C R L - X U A R - X U A 2 0 5 C P 2 3 3 1 0 5 C P 2 3 3 1 2 3 1 0 5 N C AUX BOARD 6-1 6-1 USB & AUX Board-Circuit & Layout diagram ? ? ? ? ? ? ? ? ? ? ?

33、 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

34、 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? Tuner Board-Layout Diagram 7-2 7-2 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?