Philips-CE-120-CE-120-X-Service-Manual(1)电路原理图.pdf

《Philips-CE-120-CE-120-X-Service-Manual(1)电路原理图.pdf》由会员分享，可在线阅读，更多相关《Philips-CE-120-CE-120-X-Service-Manual(1)电路原理图.pdf（25页珍藏版）》请在收音机爱好者资料库上搜索。

1、 CE120/55Copyright 2008 Philips Consumer Electronics B.V. Eindhoven, The NetherlandsAll rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise without the prior permi

2、ssion of Philips.Published by JZ-SL 0847 Service Audio Printed in The Netherlands Subject to modificationCar Entertainment SystemVersion 1.2CLASS 1LASER PRODUCT 3141 785 33182TABLE OF CONTENTSPagePCBs Location .1-1Specifi cations .1-2Measurement Setup .1-3Service Aids, Safety Instruction, etc .1-4Di

3、sassembly Diagrams .2-1 to 2-2Software Version Check & Upgrade .3-1Malfunction Check Chart .3-2Set Block Diagram .4-1Set Wiring Diagram .5-1Main Board . 6Servo Board. 7SD Board . 8Key Board . 9Set Mechanical Exploded View & Parts List . 10CE120X/78Revision List .111-1Location of PCBS Service policy

4、SERVO BOARD SD/USB BOARD KEY BOARD /55/55CCC CE120VERSION VARIATIONS:Type/VersionsType/VersionsBoard in used:CE120MAIN BOARDFeature diffrenceFeatures* TIPS:C-Component Lever Repair. M-Module Lever Repair -UsedCMAIN BOARD SERVO BOARD KB BOARD SD BOARDSPECIFICATIONS1-2USB/SD card PlayerSystem:Frequenc

5、y response:Signal/noise ratio:Total harmonic distortion:Channel separation:Disc digital audio system20 Hz - 20KHz 80 dBLess than 0.20%(1KHz)60 dBGeneralPower supply:Maximum power output:Suitable speaker impedance:Pre-Amp output voltage:12V DC(11V-16V) Test voltage 14.4V, negative ground45Wx4 channel

6、s4-8 ohmFuse:Dimensions(WxHxD)Weight:15A178x50x155mm1.64kg2.0VComponentsMounting collar Tapping screws M5x6 mm 4 M4x6 mm 4Mounting bolt (50 mm) 1Wire connector Trim plate 1T-key 21Rubber cushion 1111User manualCase for removable control panel Note: Specifications and design are subject to change wit

7、hout notice for product improvements. AM RadioFrequency range:Sensitivity(S/N=20dB):530-170 KHz 30 dBFM Stereo RadioFrequency range:Sensitivity:Frequency response:Stereo separation:Image response ratio:IF response ratio:Signal/noise ratio10 dB30Hz-15KHz30dB(1KHz)50dB70dB55dB87.5 - 107.9MHzMEASUREMEN

8、T 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) and disturbance from the pilottone(19kHz,38kHz). Tuner AM (MW,LW)DUTRF GeneratorBandpass

9、LF 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 to be carried out in a Faraday s cage.Use a bandpass filter ( or at least a high pass f

10、ilter with 250Hz) to eliminate hum ( 50Hz,100Hz ).1-31-4SERVICE AIDSGBGBWARNINGAll ICs and many other 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

11、 the massof the set via a wrist wrap with resistance.Keep components and tools also at thispotential.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

12、symbol ! .Lead freeDisassembly Diagram2-1 2-110 pull out the mounting collar from the main set with two L-keys.20 Press the release key and take out the panel 30 Take out the top cover with a forceps. 40 Take out the bottom cover with a forceps. 150 loosen and take out the five bolts $ with a screw-

13、driver. 60 loosen and take out the three bolts $a with a screw-driver, then pull out the two connection-pegs $b carefully . 470 pull out the connection-peg $c carefully5 672380 loosen and take out the bolt $d with a screw-driver. 90 loosen and take out the bolt $e with a screw-driver.100 loosen and

14、take out the bolt $f with a screw-driver.4Disassembly Diagram2-2 2-28110 Seperate the panel housing with fingers first.Then pull out the connection-peg $g . 9120 Take out the knob from panel. 130 Take out the six bolts $h with a screwdriver.3-1 3-1Software version check & upgrade Upgrade softwareUpg

15、rade software Upgrade softwareVS-104Check Servo software versionCheck MCU software versionVM-1031. In USB/SD/Disc mode, press DISP + 6 simutaliously for 2 sec, LCD display is as below: 1. In tuner mode, press DISP + 6 simutaliously for 2 sec, LCD display is as below:102 is the servo software version

16、 103 is the MCU software version 10 Copy servo software “BOOT.ALI“ and “nemo.bin“ into USB memory, plug the USB memory into USB socket.Device upgrade servo software automatically,Dont power off or disconnect power during the upgrade, LCD show:SERVO UPGRADING,DONT PWR OFFAround 1 minute,servo softwar

17、e upgrade completed and device change to radio mode automatically20 Delete the servo software in the USB and copy the MCU software “CE120MCU“ (for CE120) into USB memory, plug the USB memory into USB socket.Device upgrade MB software software automatically Dont power off or disconnect power during t

18、he upgrade, LCD show:Around 1 minute,MB software upgrade completed and device power off automatically,disconnect the USB memory.MCU UPG3-2 3-2Malfunction check chartTDA7388 of AMPPower componentsNONONOPowerNONONONONOCheck USB/SD outputComponentsCheck tuner circuit andits conjoint part is good or badChange the tunerNONOUSB/SDUSB/SDCheck USB/SD controlUSB/SD circuitCheck the related components of USB/SDsignal channel,cable,socket is good or badCheck whether readSD card,and its functionsFix the wire4-1 4-1SET BLOCK DIAGRAM