Philips-MCD-750-Service-Manual电路原理图.pdf
《Philips-MCD-750-Service-Manual电路原理图.pdf》由会员分享,可在线阅读,更多相关《Philips-MCD-750-Service-Manual电路原理图.pdf(27页珍藏版)》请在收音机爱好者资料库上搜索。
1、DVD Micro System MCD750/93TABLE OF CONTENTS3141 785 32941DB 08222008 Location of PC Boards . 1-1Specification . 1-2Measurement Setup . 1-3Service Aids . 1-4Instruction On CD Playability .1-5 to 1-6Software Version Check & Upgrade . 2-1Malfuction Check Chart . 2-2Decoder Board . 8Disassembly Diagram
2、.3-1Block Diagram . 4-1Wiring Diagram. 4-2VFD Display Board .5Circuit diagram . 5-1Layout diagram . 5-2TUNER Board .7USB & AUX Board .6-1Circuit diagram . 7-1Layout diagram . 7-2Circuit diagram . 8-1 to 8-6Layout diagram .8-7 to 8-8Explode View .9-1 Service Partlist .10-1AMPLIFIERRated Output Power
3、. .2 x 25W RMS Signal-to-noise ratio . 65 dBAFrequency response . 50Hz - 3 dB+/-2 20KHzAux Input.0.5V RMS 47kohmDISCLaserType . SemiconductorDisc Diameter. 12cm/8cmSupport Disc .DVD,DVD-R,DVD-RW,DVD+RW,CD-DA,MP3,CD-RWAudio DAC .24Bits / 44.1kHz Total Harmonic Distortion . 28dBImage Rejection .25dBTo
4、tal Harmonic Distortion . 3%Signal to Noise Ration .!GBASPEAKERSSpeaker Impedance . 8ohmSpeaker Driver, base .4“Speaker Driver, tweeter .BUZZER Frequency Response .50Hz -3dB+/-2 20KHz GENERAL INFORMATIONTotal Output power .W RMS AC Power . 220-2309+Operation Power Consumption . 25WStandby Power Cons
5、umption .4WEco Standby Power Consumption .1WHeadphone Output . 2X15mW 32ohmUSB Direct . Version 1.1Dimensions Main unit (w x h x d)PP Speaker box (w x h x d).115x152x204mmWeight With Packing .7.5 KG Main Unit .1.2KG Speaker box . . 2.7KGNet Weight. . .*Specifications and external appearance aresubje
6、ct to change without notice.1-2Specification1-3LF Generator e.g. PM5110RecorderUse Universal Test Cassette CrO2 SBC419 4822 397 30069LEVEL METERe.g. Sennheiser UPM550with FF-filterS/N and distortion metee.g. Sound Technology ST170LRDUTor Universal Test Cassette Fe SBC420 4822 397 30071LEVEL METERe.g
7、. Sennheiser UPM550with FF-filterS/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. 7122 707
8、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. PM5326Ri=50:Bandpass250Hz-15kHze.g. 7122 707 48001LF Voltmetere.g. P
9、M2534DUTRF 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).Ri=50:Tuner FMMEASUREMENT SETUP1-4SERVICE AIDSGB WARNINGAll ICs and many other semi-conductors aresusceptible to
10、 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.ESDCLASS 1LASER PRODUCTGBSafety re
11、gulations 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 freeSet remains closed!NYPlay a CD for at least 10 minutesYplayabilityok ?Nplayabilityok ?add Info for customer“SET OK“c
12、heck playabilityNYplayabilityok ?check playabilitycheck playabilityreturn setCustomer complaint“CD related problem“fast“ lens cleaning123For flap loaders (= access to CD drive possible)cleaning method 4 is recommendedINSTRUCTIONS ON CD PLAYABILITY1-Exchange CDM1 - 4 For description - see following p
13、ages1PLAYABILITY CHECKFor sets which are compatible with CD-RW discsuse CD-RW Printed Audio Disc.7104 099 96611TR 3 (Fingerprint)TR 8 (600 Black dot) maximum at 01:00 playback of these two tracks without audible disturbanceplaying time for: Fingerprint t10secondsBlack dot from 00:50 to 01:10 jump fo
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- PhilipsMCD750ServiceManual 电路 原理图