HarmanKardon-HK3470-rec-sch维修电路原理图.pdf
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1、harman/kardon hk3370/3470STEREO RECEIVERPRELIMINARYSERVICE MANUALCONTENTSESD WARNING.2LEAKAGE TESTING.3BASIC SPECIFICATIONS hk3370.4BASIC SPECIFICATIONS hk3470.5FRONT PANEL CONTROLS hk3370.6REAR PANEL CONNECTIONS hk3370.8REMOTE CONTROL FUNCTIONS HK3370.10FRONT PANEL CONTROLS hk3470.12REAR PANEL CONN
2、ECTIONS hk3470.15REMOTE CONTROL FUNCTIONS HK3470.17TROUBLESHOOTING GUIDE.19ALIGNMENT PROCEDURES.20WAVEFORMS.23BLOCK DIAGRAM.28EXPLODED VIEW HK3370.29EXPLODED VIEW HK3470.30DISASSEMBLY PROCEDURES.31MECHANICAL PARTS LIST HK3370.39ELECTRICAL PARTS LIST HK3370.40MECHANICAL PARTS LIST HK3370.57ELECTRICAL
3、 PARTS LIST HK3370.58IC DESCRIPTIONS.75PCB DRAWINGS.86SCHEMATICS.92WIRING DIAGRAM.103PACKAGE.104harman/kardon, Inc. 250 Crossways Park Dr. Woodbury, New York 11797RadioFans.CN 收音机爱 好者资料库SCHEMATIC DIAGRAMMAINHK3470RadioFans.CN 收音机爱 好者资料库7895SCHEMATIC DIAGRAMAMP/TONE/ETC.HK3370 / HK3470POWER AMPTONEVR
4、/LEDPOWER SWPOWER LED7998SCHEMATIC DIAGRAMFRONTHK3370 / HK34708099SCHEMATIC DIAGRAMTUNER/VR/HPHK 3370 / HK 3470HEAD PHONETUNER8110212. WIRING DIAGRAMHK 3370 / HK 34708210320303. Circuit DescriptionCPU(IC401) :uPD780204GF1. Pin Configuration HK3370 / HK34708 752. Pin DescriptionPin No.Pin NameI/OACTI
5、VEPORT NAMEREMARK1Vdd-H+5VSystem power supply2P37IHKR4Key read 43P36IHKR3Key read 34P35IHKR2Key read 25P34IHKR1Key read 16P33-Not used7P32-Not used8P31OH/LPWR_LED(RED)L:AMBER L:GREEN H:RED9P30OH/LPWR_LED(GRN)L:STBY H:OPER L:PROT10RESETILSystem resetLow reset11X2-OSCMain system osc.12X1I-OSC-13Vpp-Co
6、nneced to Vss14XT2-Not used15P04/XT1IH/LOPT_RDSRds on/off16Vdd-H+5VSystem power supply17P27-Not used18P26-Not used19P25ILPWR DOWNDetect power off20P24OHPWR_RLYPower Relay on/off21P23OHVR_UPVolume up22P22OHVR_DOWNVolume Down23P21ILPROTECTDetect protection24P20OHPWR_MUTEPower Mute25AVss-LGNDAnalog gro
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- HarmanKardon HK3470 rec sch 维修 电路 原理图
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