Philips-CED-230-Service-Manual电路原理图.pdf

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1、$BS“VEJP CED230WW 1228 BG LE5“#-1kHz,0dB,10K load)500mV188x58x193mm1.9kg-16VSystem:Frequency response:Signal/noise ratio:Total harmonic distortion:Channel separation:Video signal for mat:Video output:Disc digital audio system20Hz-20k Hz75dBLess than 0.3%(1KHz)55dBNTSC/PAL/AUTO1+/0.2VScreen size:Disp

2、lay resolution:Active area:Contrast ratio:Brightness:3.0 inches .320x240 dots65.52(W)x36.84(H)300200cd/m(16 91)Frequency range-FMFrequency range-AM(MW)Usable sensitivity-FMUsable sensitivity-AM(MW)(S/N=20dB)Frequency responseStereo separationSignal/noise ratio87.5-108.0MHz(Eur)65.0-74.0MHz(OIRT)87.5

3、-107.9MHz(Ame)522-1620KHz(Eur)530-1710MHz(Ame)8uV30uV30Hz-15KHz30db(1KHz)55dBMEASUREMENT SETUPTuner FMDUTRF GeneratorBandpassLF Voltmetere.g. PM5326250Hz-15kHze.g. 7122 707 48001 e.g. PM2534S/N and distortion metere.g. Sound Technology ST1700BRi=50Use a bandpass filter to eliminate hum(50Hz,100Hz) a

4、nd disturbance from the pilottone(19kHz,38kHz). Tuner AM (MW,LW)DUTRF GeneratorBandpassLF Voltmetere.g. PM5326250Hz-15kHze.g. 7122 707 48001 e.g. PM2534S/N and distortion metere.g. Sound Technology ST1700BRi=50Frame aeriale.g. 7122 707 89001To avoid atmospheric interference all AM-measurements have

5、to be carried out in a Faraday s cage.Use a bandpass filter ( or at least a high pass filter with 250Hz) to eliminate hum ( 50Hz,100Hz ).DUT DUTLRLF Generatore.g. PM5110LEVEL METERe.g. Sennheiser UPM550with FF-filterS/N and distortion metere.g. Sound Technology ST1700BLRLEVEL METERe.g. Sennheiser UP

6、M550with FF-filterS/N and distortion metere.g. Sound Technology ST1700BUse Audio Signal Disc SBC429 4822 397 30184(replaces test disc 3) CassetteUse Universal Test Cassette CrO2 SBC419 4822 397 30069or Universal Test Cassette Fe SBC420 4822 397 30071CD1-31-4SERVICE AIDSGBGBWARNINGAll ICs and many ot

7、her semi-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 thispotenti

8、al.ESDCLASS 1LASER PRODUCTSafety 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 symbol ! .Lead free1-5INSTRUCTIONS ON CD PLAYABILITYSet remains closed!check playabilityNNNYYYchec

9、k playabilityExchange CDM“fast“ lens cleaningplayabilityok?playabilityok?playabilityok?Customer complaint“CD related problem“Check playabilityPlay a CDfor at least 10 minutesann lnfo for customer“SET OK“ return set-For description see following pages-For flap loaders(=access to CD drive possible)cle

10、sning methodis recommended1-6Disassembly Diagram2、Press the release key first, then take out the panel.1、P collar main set with two L-keys.ull out the mounting from the 5、Take out the bottom cover with a forceps. 4、Take out the top cover with a forceps. 3、loosen and take out the two bolts with a scr

11、ew-driver. 6、loosen and take out the bolt with a screw-driver. 7、loosen and take out the bolt with a screw-driver. 8、loosen and take out the t bolt with a screw-driver. wo s 9、Pcarefullyull out the two pieces of connection-pegs 10、loosen and take out the four bolt with a screw-driver. s2-1 2-111 loo

12、sen and take out the boltwith a screw-driver, 、15、Loosen and take out the six bolts with a screwdriver.12 loosen and take out the boltwith a screw-driver, 、13 loosen and take out the boltwith a screw-driver, 、14、Pcarefullyull out the two pieces of connection-pegsDisassembly Diagram2-2 2-23-1 3-1Soft

13、ware version check & upgrade Upgrade softwareCheck Servo software versionCheck MCU software version1. Copy the file “MCU.BIN“ into USB stick2. Power on the device, and plug the USB stick into USB socket.After the device read the content in the USB, the LCD will show a upgrade menu, and enter into th

14、e upgrading status. 3. The LCD will appear a number (changed from 20 to 0), and whenarrived the number 0, then appear a processing bar, which mean the device enters upgrading status.4. In step 3. if want to enter into upgrading status quickly, press the key OKto confirm, the processing bar will appe

15、ar immediately. 5. Disconnect the USB stick.6. When software upgrade complete, the device will power off automatically.1. Copy the file “ROM.BIN“ into USB stick (note to delete the file “MCU.BIN“ ). 2. Power on the device, and plug the USB stick into USB socket. After the device read the content in

16、the USB, the LCD will show a upgrade menu, and enter into the upgrading status.3. The LCD will appear a number(changed from 20 to 0), and when arrived the number 0, then appear a processing bar, which mean the device enters upgrading status. 4. Press the key OK to confirm, the processing bar will ap

17、pear immediately. 5. Disconnect the USB stick.6. When software upgrade complete, the device will change to disc mode automatically.When the device is power on at the first time, in USB/SD/Disc mode,press the key in turn: stop up down left rightThe LCD will display the servo software, MCU, TFT version number.