Technics-SLCT480-dm-sch 维修电路原理图.pdf

FOCUSCOILTRACKINGCOILGNDFVCCBLDGNDEVREFALPD123456789102KPDFPDBPDELD GNDGNDGNDFO-TR-FO+TR+LDDRVNCLPDPDAVREFVCC0.220.0470.22R20222K1621345678910111213141516213456789101112131415CN101OPTICAL PICKUP12345678910111213141516171819202122232524262728PDEFBALPDFVDDPDAPDBLPDLDRFRF INCSBRTCEABDOLDONGNDTBALVREFFE INFE OUTTE OUTTE INEQSWGCLTENVDEFLVLOFTRPDOWN/RFDETIC101AN8885SBE1VSERVO AMPC1010.1C112220PC121120PR122120KR12010KR121120KC1201500PC1110.022C1130.1C1170.022R12810KC1160.022RFC1150.022C1030.022C1140.1R125120KR101100S201(LASER ON/OFF)(SHORT LAND)JLA BCDEFGR126100KKVREFR2031C2016.3V22R2012.2Q2012SB709ATXLASER POWERDRIVEA B C D E FAFBCDEABCDMRX1410RJ1010BAIHG HGH:POSITIVE VOLTAGE LINE:PLAYBACK SIGNAL LINE2.6V1.3V1.3V2.6V1.3V1.3V0.6V(1.2V)0.7V1.2V1.2V0V0V(2.6V)1.3V1.3V1.3V1.3V1.3V1.3V1.3V2.6V0V1.3V0V0V0V2.5V(0V)PLAY2ms.20mV/DIV.70mVP-PPLAY0.3VP-P2ms. 0.1V/DIV.PLAY0.8VP-P0.5s. 0.2V/DIV.2.6V0V(0.2V)2.1V(1.8V)2.6V0.8V(1.8V)2.1V(1.8V)RadioFans.CN 收音机爱 好者资料库LCD301(L5AAACB00015)1256789 10 11 12 13 14 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INEXT-OUTEXT-IN/RESETTYPESELRIOWLSRCNBLKCKSTATMDATAMCLKMLDPLAYAC DETPMSEL2MUTE LDMUTE HCHARGE2BUZCHARGE1OPENKEY1KEY2KEY3VMON2VMONDOCTOR6KEYVL2VL3COM0COM1COM2COM3AVssVREFVccSEG1SEG2SEG3SEG4SEG5SEG6SEG7SEG8SEG9SEG0VL1LDSEL1EFGHIJKLM N O P QFfR30710KC3040.1VccGNDR3101KIC301C2BBFD000293SYSTEM CONTROL/ LCD DRIVE:POSITIVE VOLTAGE LINE2.6V2.8V1.4V1.4V1.4V1.4V1.4V1.4V1.4V1.4V1.4V1.4V2.8V2.6V1.4V1.4V1.4V1.4V2.8V1.9V0.9V1.4V1.4V1.4V1.4V2.8V2.8V2.8V2.8V0V0V0V2.8V2.8V1.3V1.2V0.4V0.4V2.7V0.5V0V0V0V2.8V2.8V(1.2V)2.7V0V0V0V0V2.5V0V2.6V2.6V2.6V2.6V2.5V1.9V2.6VPLAY0V2.6VF=150HzPLAY0V2.8VT13.3ms.F=4.2336MHz2.2VP-PF=4.2336MHz1.9VP-P2.8V0.8V0V1.8VT15.4ms.2.8V0.8V0V1.8VT15.4ms.PLAY0V2.8VT13.3ms.2.8V2.8V2.6VRadioFans.CN 收音机爱 好者资料库GDSIC501MN662786SBSERVO PROCESSOR /DIGITAL SIGNAL PROCESSOR /DIGITAL FILTER & D/A CONVERTERIC502M51V7400D1FS16M DRAMX501(16.9MHz)VDD123458910111213141516172021222324A3A2A1A0NRASNWEDQ0VDDA4A5A6A7NOENCASDQ2DQ3VSS761819A10A8NCA9DQ1VSSRJ5040R5112.2KR603560C5040.1R50256KC5074V100C6104V47R5081R5122.2KR514680C5141000PC5100.1C5050.022C5110.1R513100KC5060.47R505150C5090.01R5062.2KC5080.47RSTUVWXBMR7505.6KC6032700PC6042700PbR51515aC5171Q5022SK1958T1SWITCHING123456789101112131415161718192041 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 6061716272637364746575667667776878697970802122232524262728293031323334363738394035EXT2DVDD1DVss1X1X2NTESTSBCKSUBCNCLDCKPMCKSPPOLNRSTSTATDMUTESMCKPWMSELBLKCKMLDMDATAMCLKTXAVDD2AVSS2EXT1EXT0FCLKFLAGAD PVCCDSLFDRFPLLFVCOFOUTLAVSS1OUTRAVDD1FSELTMOD1TMOD2IOVDD2TRV+TRV-TR+TR-FO+FO-FBALTBALDVDD2LDONIREFARFBDOSPOUTFETERFENVOFTNRFDETIOVDD1VSS2DVDD3VD0D1NWENRASD3D2NCAS0NCAS1A8A7A6A5A4A9A0A1A2A3C7501C7511ACDFGIKJLR516100ACFGHIJKLMNOPEDBAFCIPEDBNMLKJHGABCDABCDR517100KZEGFBDCYdeARJ5510C5250.1RJ5020O312R50168KC503560PC5150.1C6110.1RJ5050R100012K:POSITIVE VOLTAGE LINE:PLAYBACK 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