Philips-MCD-110-Service-Manual电路原理图.pdf

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1、DVD Micro System TABLE OF CONTENTS3141 785 32520XL 09112008Location of PC Boards . 1-1Electronic Specification . 1-2Measurement Setup . 1-3Service Aids . 1-4Items Of Safety Attention .1-5 to 1-6Instruction On CD Playability .1-7 to 1-8Software Version Check & Upgrade . 2-1Malfuction Check Chart . 2-

2、2Disassembly Diagram .3-1Block Diagram . 4-1Wiring Diagram. 4-2USB Board .5Circuit diagram . 5-1Layout diagram . 5-1LED Display Board .6Circuit diagram . 6-1Layout diagram . 6-2Power Board .7Circuit diagram . 7-1Layout diagram .7-2Exploded View . 9-1Service Parts List . 10-1Factory Parts List . 11-1

3、 to 11-2MCD110Decoder Board .8 Circuit Diagram . 8-1 to 8-6Layout Diagram . 8-7 5HFRUGDEOH5H:ULWDEOHLocation of PC BoardsVERSION VARIATIONS:Type /Versions:FeaturesBoard in used:MCD110Service policyLED DISPLAY BOARDPOWER BOARDUSB BOARDDECODER BOARD* TIPS : C - Component Lever Repair.M - Module Lever

4、Repair- Used/55/55/58/58/61/61/79/79/93/93/94/94/96/96/98/98/37/37/12/12/05/05Feature diffrenceRDSTDSVOLTAGE SELECTORECO STANDBY - DARKCCMMType /Versions:MCD110Decoder BoardPower BoardLED Display BoardUSB Board1-1AMPLIFIERRated Output Power . NASignal-to-noise ratio . NAFrequency response . NAAux In

5、put . NADISCLaser Type . SimeconductorDisc Diameter . 12cm/8cmSupport Disc .CD-DA,CD-R,CD-RW,MP3,DVD,DVD-RW,DVD+RWAudio DAC .1KHzTotal Harmonic Distortion . 65dBATUNERFM Tuning Range . NATuning grid . NASensitivity Mono, 26dB S/N Ratio . NA Stereo, 46dB S/N Ration . NASelectivity . NAImage Rejection

6、 . NATotal Harmonic Distortion . 1%6LJQDOWR1RLVH5DWLRQG%$SPEAKERSSpeaker Impedance . NAeSpeaker Driver, base . NASpeaker Driver, tweeter . NAFrequency Response . NAGENERAL INFORMATIONTotal Output power . NAAC Power .220V / 50Hz.Operation Power Consumption . 6WStandby Power Consumption . NAEco Standb

7、y Power Consumption . 0.5WHeadphone Output . NAUSB Direct . Version 2.0Dimensions Main unit (w x h x d) . 220x90x240mm Speaker box (w x h x d) . NA SUBwoofer(w x h x d) . NAWeight With Packing . 1.8KG Main Unit .1.2 KG Speaker box . NA SUBwoofer. NASpecifications and external appearance aresubject t

8、o change without notice.1-2Electronic Specification1-3LF Generator e.g. PM5110RecorderUse Universal Test Cassette CrO2 SBC419 4822 397 30069LEVEL METERe.g. Sennheiser UPM550with FF-filterwith FF-filterS/N and distortion mete.g. Sound Technology ST170LRDUTor Universal Test Cassette Fe SBC420 4822 397

9、 30071LEVEL METERe.g. Sennheiser UPM550S/N and distortion metere.g. Sound Technology ST1700BLRDUTCDUse Audio Signal Disc(replaces test disc 3)SBC429 4822 397 30184Bandpass250Hz-15kHze.g. 7122 707 48001LF Voltmetere.g. PM2534DUTS/N and distortion metere.g. Sound Technology ST1700BFrame aeriale.g. 712

10、2 707 89001Tuner 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 Generator e.g. PM532605=iRBandpass250Hz-15kHze.g. 7122 707 48001LF Voltmetere

11、.g. PM2534DUTRF Generator e.g. PM5326S/N and distortion metere.g. Sound Technology ST1700BUse a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz).05=iRTuner FMMeasurement Setup1-4 INFORMATION ABOUT LEAD-FREE SOLDERING GB WARNINGAll ICs and many other se

12、mi-conductors aresusceptible to electrostatic discharges (ESD).Careless handling during repair can reduce lifedrastically.When repairing, make sure that you areconnected with the same potential as the massof the set via a wrist wrap with resistance.Keep components and tools also at thispotential.ESD

13、CLASS 1 LASER PRODUCT GBSafety regulations require that the set be restored to its originalcondition and that parts which are identical with those specified,be usedSafety components are marked by the symbolPhilips CE is producing lead-free sets from 1.1.2005 onwards. Regardless of special logo(not a

14、lways indicated) one must treat all sets from onwards,according next rules: IDENTIFICATION: !.Lead free 1 Jan 2005 Service Aidstems of Safety Attention1-5Attention: Please read tems of Safty Attention carefully. f there are une pected conflicts between safefy attention and maintenance attention, ple

15、ase abide to safety attention Safety first.Common Maintenance AttentionBefore operating, please unplug the AC power cord from the outlet.a) Disassemble any parts.b) Cut-off or re-connect plug and other inserting parts.c) hen electrolysis capacitance and test parts is parallelconnected, anti-polarity

16、 and wrong replace will causee plosion.Do not spray chemical on the component system, surroundings and any parts.Clean the electric unction with a cotton stick which is with cleaning mi ture, e cept there is other demand in this manual. Please notes:t is a kind of inflammable mi ture.Do not use lubr

17、icant to the soldering point, e cept there is other demand in this manualCommon ControllingDuring maintenance, please take common controlling to protect component system and electronic parts and prevent damages to the circuit due to improper operation.Led out wire should be kept away from high-press

18、ure or high-temperature parts.ESSome semi-conductor parts are easily damaged by static charges, these parts are called ES. They are mainly the cores of transistor lead identification. The following technical ways can be used to reduce the damages by static charges.Before connecting semi-conductor or

19、 the parts. Let off the static charges of the body by connection the earth. n the other hand, to prevent potential electric shock hazard, please use industrial static handle before connecting power for checking the e uipment.After unsoldering the ES parts, put the parts on a electric surface such as

20、 aluminum foil to prevent accumulating static charges to damage the parts.nly use anti-static charges grounded soldering irons to unsolder the parts or solder ES parts.Some soldering tin called Anti-static charges can also generate charges to damage ES parts.Do not use poisonous and caustic agent wh

21、ich these kinds of chemicals can generate static charges to damage the ES parts.Do not take ES parts out of conductive packages until they are used (mostly replacing ES parts is packed with aluminum foil or similar conductive materials making a short circuit).After taking replaceable ES parts from A

22、nti-static charges cone, please insert the ES parts in the correctly location soon as possible.During handing sealed ES parts, reduce the movement of the body (clothes rubbing and moving on the rug can generate static charge to damage the ES parts.)Maintenance Attention Common Soldering RulesUse onl

23、y grounded low-voltage soldering iron, and proper size and shape which can sustain the temperature of soldering horn to range from 350 to 390.Use rosin flu which is demanded by RMA include 60 Tin 40 lead.To maintain soldering iron and its tin very well.Use the wire brush but not spray cleaners such

24、as Freon to clean the soldering surface.Adopt the melting waysa) The temperature of soldering horn range from 350 to 390.b) Heat up the parts pin, until soldering tin is molten.c) Use the desoldering pump to suck out the molten soldering tinuickly.Note: uickly operating can prevent superheating the

25、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,until soldering tin is molten. Then move the soldering horn uickly to the location that you want to solder. Not

26、e: uickly 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 wire brush.Unsolder/Replace ICNotes:Do not touch the C body directly with soldering iron. Pre-heating soldering iron

27、at about 130 for some seconds avoid the damages caused by C heated suddenly. For normal C, the temperature of the solder horn is about 350, and can increase to 390 for some bigger C.Use the filamentous welding rod and solder which thickness is about 0.3mm to solder thin C and add the solder as neede

28、d.Replace the C carefully and solder it uickly.After unsoldering the C, clean the basic board carefully to ensure the board is usable.Prevent the molten soldering tin dripping on the board which will engender a short circuit.Aim at the first terminal and fi it, then aim at other terminals for correc

29、tly inserting C. ou can solder uickly ust like this.Before operating, please make sure the C is unusable. Do not unsolder repeatedly. During soldering especially soldering a thin C with many pins, check the weld carefully.After replacing, check that there is not soldering leak, rosin oint, short cir

30、cuit and so on. Unsolder:Use the soldering iron to melt the soldering tin.Before unsoldering C, suck out the molten solder tin.ReplaceMake sure all the C pins are on their correct location, then solder.Use a wire brush to clean the welting zone.Items of Safety Attention1-6U After unsoldering the unu

31、sable diode, nip its body and take it out.Bend the two pins and the diode is vertical to circuit board.Check the polarity of the 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.

32、R - Repair the warpage copper as following: Use a sharp knife to scrape the unusable copper and the 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 th

33、e unwand lead.T DD No sound or sound distorted when playing, please check the DVD part.N 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 bla

34、ck package.The electric rug is grounding 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

35、 avoid the static charges touching 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.6HWUHPDLQVFORVHG13ODD&IRUDWOHDVWPLQXWHVSODDELOLWRN“1SODDELOLW

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