Kenwood NX-420 K Service Manual

Contents

71SCHEMATIC DIAGRAM NX-420X57-837 4/8ADACABAAZDDDSCK1/PCS_RFPCK_DSPVOLSBCS-DETENC3ENC4ENC2ENC138MPCK_RF/PCS_DSP/PCS+B+B33MC515 6800pR54110kR542470kR54310kC552100pR51810kR521470kR522470kFK330301Q501R514470C5426800pR51333kR51268kC53456pC532 10uL50615uD503HRB0502AR536470kR534470kR527100kR528100kR529100kR535470kR530100kR533470kIC609TC7SH08FU-F123INBINAGND 4oUTY5VCCC6850.01uIC506XC61CC5602N-G1VoUT2VIN43VSSNCC537 0.01uC549 4.7uIC505LT1616ES6-PBF123BooSTGNDFB4SHDN5VIN6SWD5021SS388FC529 10u10R538470kR504 2.2kR506 0C514C517 100pR51010L505C5271000pC547 1000pL5042SJ648-AQ500C524 100pC503100pC5094.7uL5014.7uC523 10uC525L5021uC531C5431000pC5391uC5301000pC5411000pC5351000pD5001SR154-400F500C5401uC5330.22uR5111kIC502XC9235A15CM-G1VIN2VSS3CE/MoDE4 VoUT5 LXC5001000pC5116800pL500R6540C6840.01uIC608TC7SH08FU-F123INBINAGND4oUTY5VCCCN503SB1CN501+BC513C518C519C520 100pCP500100kX4C5081u C5061uC5221uR50768kIC500NJM2878F4-3312CoNTRoLGND4VIN3VoUTC5211uIC501NJM2878F4-331 CoNTRoL2 GND4VIN3VoUTL503D5011SS388FC5120.1uXC6209B502P-GIC504123NCVSSCE4VIN5VoUTCN502GNDR5010R516390kR517150kC55110uR505 2.2kC516100p100p100p100p100pR5082.2CN5001 +B2 SB13 NC4 33A5 VOL6 VOL_GND7 ENC38 GND9 ENC410 ENC211 ENC1R6550C536100pC510100pC5261u10uL5071uR5150R5231R500270kR502180kIC503NJM2878F4-3312CoNTRoLGND4VIN3VoUTCP5011kX4C50122pD506DA3S103EQ508EMD12Q507FC694301Q506FC694301+-SS60-0443-05 R31-0665-0515M33M33ASB233MVCO_MODPTT50CSBCBATT/BINT/PSW33C50C50C50CVCO_MODPTT+B33ALi-ionBATTERYREVERSEPROTECTSPEED UPDC/DC CONVD502,D503REVERSECURRENTPREVENTIONAVR (33A)AVR (33M)AVR (15M)AVR (33C)AVR (50C)DC/DCCONV (38M)RESETAND GATEAND GATEDC SW (SB2)Q500 CONTLEVEL CONVLEVEL CONVSB1 CONT2.5AR:7.49VT:7.39V3.30VR:7.50VT:7.40V7.5V3.30V7.50V3.3V4.97VR:7.46VT:7.36VR:1.98VT:1.96V3.86V3.30V1.50VTX-RX UNIT (X57-8370-10)