《JVC-MXJ300-cs-sm 维修电路原理图.pdf》由会员分享,可在线阅读,更多相关《JVC-MXJ300-cs-sm 维修电路原理图.pdf(6页珍藏版)》请在收音机爱好者资料库上搜索。
1、SERVICE MANUALCOMPACT COMPONENT SYSTEMNo.20864Aug. 2000COPYRIGHT 2000 VICTOR COMPANY OF JAPAN, LTD.MX-J300MX-J300ContentsSafety PrecautionsImportant for laser productsPreventing static electricityDisassembly method Adjustment methodFlow of functional operation until TOC readMaintenance of laser pick
2、upReplacement of laser pickupDescription of major ICs1-21-31-41-51-241-271-281-281-29Area SuffixAUUSUTUPUYUZAustraliaOther AreasSingaporeTaiwanKoreaArgentinaProduction country markCD3CD2CD1STANDBYVOLUMECD1CD2CD3PLAY & EXCHANGEFM /AM CDPLAYREC/PLAYAUTO REVERSEEJECTCOMPACTDIGITAL AUDIOTAPEMIC LEVELFUL
3、L - LOGIC CONTROL1 BITDUAL D/A CONVERTERAUXPHONESPANEL OPEN / CLOSEPOWERED ROLLING PANELMX-J300+EJECTMICMINMAXCOMPACTDIGITAL AUDIO1/CLEARC DTAPECLOCKTIMERSLEEPSELECT +RM-SMXJ300V REMOTE CONTROL23456AUXFM/AMFM MODEPLAY MODECD3CD2CD1A TAPE - BREC PAUSESOUNDMODEVOLUMEACTIVE BASS EX.SHIFT78910+10 SETECH
4、ORadioFans.CN 收音机爱 好者资料库ABCDEFG123452-3MX-J300TAPE P.B. signalFM / TUNER signalCD signalMAIN signalAM signalMIC signalMain sectionSHEET 2/6SHEET 5/6SHEET 3/6SHEET 3/6SHEET 4/6SHEET 6/6SHEET 6/6Parts are safety assurance parts.When replacing those parts makesure to use the specified.L2AM BLOCK COIL+C
5、91625V10R341220R3574.7KR133390 UNF.CR233390 UNF.CD3021SS133IN-11NF-12N.C3PRE-VCC4BIAS5OUT 1 +6OUT 1 -7VCC8VSS9OUT 2 +10SUB G13NF 214IN 215OUT 2 -11PRE-VSS12IC304STK402-120RY30112VJ303D3071SS133Q3102SC945R32215D3081SS133D3091SS133R32110R1241.5KR12382KR1250.1-2W UNF.MFR1260.1-2W UNF.MFR2241.5KR2260.1-
6、2W UNF.MFR33510kR2250.1-2W UNF.MFR122100KR221680C220220PC2220.018-MC1220.018-MC119470PC22310PC219470PC12310PC120220P+C12150V47+C21825V4.7R222100KR127150-1/4WR227150-1/4WR121680+C12450V100R12056KR22056K+C22450V100Q3032SA1175Q3022SC2785Q304DTC114ESQ1042SA1175Q2042SA1175R22382KR31210KR11910KR31022KR311
7、47KR309100KL1015uHL2015uHR12822R22822R12922R22922R13022R25022R13110KC1260.1-MC1250.1-MC2250.1-MC2260.1-MR313470R23110KR3152.2KR314470KR232390 UNF.CR132390 UNF.C+C31425V10+C31550V1+C31816V22+C31616V47+C22150V47+C11825V4.7D3041SS133R2361KR1361KR3232.2KR13510KR23510KQ2062SD2144Q1052SD2144Q311DTC114ESR1
8、37100KR237100KR316100KR1172.2KR2172.2KQ3082SC2785Q3072SC2785R32410K1234CN302Q3092SC2785Q1032SD2144Q2032SD2144Q2022SC2785Q1022SC2785123G4567VCC8+-+-IC303BA15218R21910KR3341KR30447R30722KR1184.7KR2184.7KC2100.082-MC2110.082-MC1100.082-MC1110.082-MC1120.0056-MC2120.0056-MC3050.1-MC3040.0012-MC3080.01C3
9、07100PR2095.6KR1095.6KC1130.12-MC2130.12-M+C30610V22R3021KR3031K+C30916V47C1140.1-MC2140.1-MR28110KR18110K+C11510V100+C11725V4.7+C21725V4.7+C21510V100+C31010V100R2142.2KR1142.2KR113120KR213120KR1111.2KR1152.2KR1102.7KR2111.2KR2102.7KR2126.8KR1126.8KD301MTZ5.1JR2152.2KR305220+C31116V47R11610KR21610KD
10、3031SS133+C20825V4.7+C10825V4.7J301AUX-LAUX-R+C10250V1+C20250V1R10139KR20139KR2026.8KR1026.8KC101100PC201100PC3011000PL301F.BJ1FLAME GND123456789CN901A(1/2)CN901B(2/2)D909 1SS133D9061N4003R9071K+C91263V47+C91350V22+C91750V2.2Q9012SA934D907MTZ33JR9032.2KC9140.01R904100R905100R902100 1/4W UNF.FD908 MT
11、Z6.2J+C91550V22D910MTZ6.2JR90610KQ903DTC114YSQ902DTC114YSQ9052SC2785Q9042SB1375Q9062SC2785R91022KR912470R90947KR9116.8KC9180.01D911MTZ5.6J+C91910V100Q9072SB1375Q9082SA1175Q912DTC114YSQ9112SC2785Q910DTC114TSQ909DTA114TSR9141R9151R9161R913470D913MTZ12JD912MTZ13JR9171KR9186.8K+C92025V10+C92225V10+C9211
12、6V100+C92316V100R3263.3KR3256.8KD3151SS133Q9132SA1175Q9142SC2785D9141SS133+C92510V22R9292.2KR9311KR92833R930100K+C92416V47+C32225V10D3051SS133C9040.068-MC9010.068-MC9020.068-MC9030.068-M+C90650V3300+C90550V3300D9021N4003D9031N4003D9051N4003D9041N4003C9070.1C9090.1C9080.1C9100.1+C91125V4700R9014.7KR9
13、082.2-1/4W UNF.FQ3012SC2785R30610K+C31225V4.7+C31316V47R308470123456789CN301REC-LA.GREC-RSW9VPB-LA.GPB-RM.BM.G+C10925V4.7+C20925V4.7+C31916V1000D3121N4003D3111SS133L30310uH+C20350V1+C10350V1R13410KR23410KR13910KR23910KD3141SS133Q3132SC2785+C23050V1R15122KR33915KR25122KR338390R3361K+C32950V1Q3142SC27
14、85+C13050V1R342820R34033R337100KR34310KR344100K+C33025V4.7+C33150V1D3161SS13311421531641751861978910111213CN303L304F.B+C32410V220+C22825V4.7L302F.BM.G8VPRTSPKSMUTEPCNT(ECHO)(KOK)VDATAVCKMPXAHBFTUSFTY6VTUCEN.CLVLSDISDODGFL1FL2-35VSCK114215345678910111213CN305114215345678910111213CN304MCMDMSTAT+8V+8VM
15、.GNDMRDYM.GNDOUT.RA.GNDA.GNDOUT.LD.GNDD.GNDBU5VBU5VTXMCSMCLKMRESETR328220R329220R330220R331220R24210KR14210KR2411KR1411K+C12825V4.7Q3122SC3576R327150+C32010V100C3210.01+C20550V1+C10550V1C3250.01MCMDMSTATMRDYMCLKMRESETR332220C3261000PC3270.01C3280.01C3230.01VCKVDATASMUTEPCNTPRTSPKAHBLVLRIN31RIN22RIN1
16、3LIN14LIN25LIN36LIN47MUXO-L8IN(L)9MUXO-R10IN(R)11BIN(R)12BOUT(R)13BIN(L)14BOUT(L)15LP16PS117TRE(L)18TRE(R)19DGND20SCL21SDA22CREF23VS24AGND25ROUT26LOUT27RIN428IC301TDA7442DQ1062SD2144Q2052SD2144R2381KR1381KRSWLGNDTo CASSETTE UNITS1SP-R +SP-L +SP-L -SP-R -SPEAKER OUTPUTTo HEADPHONES2S1-GNDS1S2S3S3S4S4
17、To SECONDARYF2PCNTINH-35VF1D901TS6B02GR333100KR359220+C36025V1012345CN307ECHOMICA.G9VECHOD915MTZ6.8JQ9152SB1375Q9162SC2785D916MTZ9.1JD.GVCC1MIC2LOUT3FK4TK5LIN6BIAS7GND8RIN9LP10LP11LP12ROUT13A14B15C16IC351BA3837+C36150V1+C35950V1R3601KR3584.7KR36110K+C25125V10+C15125V10C3620.33C3630.068JP101+C35816V2
18、2J302ANT-TERMINALRFGND1FM_RFIN2AM_FIL3MIX_OUT4VCC5AM_IFIN6FM_IFIN7GND8AGC9QUAD10R_OUT11L_OUT12LPF1/BAND13LPF2/M_ST14MPX_IN15DET_OUT16IF_REQ17ST_IND18OSC_OUT19AM_OSC20FM_OSC21AM_RFIN22RFVCC23FM_RFOUT24IC1TA2104BNXTI1FM2CE3DI4CLOCK5DO6VCOSTOP7AM/FM8LW9MW10SDIN11IFIN12FMIN16XT22VCC17GND21LPFI20LPFO19PD
19、18AMIN15NC14IFCNT13IC2LC72136D11SS133D21SS133C10.01X1VCX5044-001C5112PC5212PC541-TFC550.0039C560.01C570.01C580.001C601000PL51220uHR601KR611KR511KR591KR6347KR57330R541.8KR554.7KR564.7KR523.3KR534.7KR5810K+C5350V47+C5910V100FLAME GNDR171.5KCF110.7MHzR2610KR225.6KR235.6KR12470KR1356R11330R14330R213.3KR
20、16100K+C3450V1+C1910V100+C3050V1+C3610V100+C3725V10C25330PC320.1C350.01C120.01C390.015-MC380.015-M+C4150V2.2+C4050V2.2C310.1CF3CDA10.7MG80AC1510PC26470PC140.047Q12SC1923(O)CF210.7MHzR151KR247KR1100KC24.7PC180.01C130.01R252.2KR242.2KL9F.BC330.0015SCKSDOTUCET2VQT7A21-111C431000PC421000PC30.001C62100PC
21、63100PC290.0068R681KR19470MPXD41SS133D31SS133C220.001C2112PR621KL8100uHQ6DTC114YSQ8DTC114YSQ7DTA114YSR691K+C2725V4.7C160.047+C10450V1+C20450V1D111SS133D121SS133SDIC441000PIN1GND2OUT3LC1BPFL6FM-OSCL1 FM-RFD5SVC203D6SVC203Q5DTC114YSQ351DTC114YSJP201KOKR36222KC200.01C17 12PR18100(J/C/E= 13-Pin Ux=15-Pi
22、n)To Mic-Amp,R14010KR24010KD3171SS133D3181SS133D81SS133D71SS133D101SS133D91SS133R7222R7147KR70100KC490.01Q305DTA114ESQ306DTA114ESR6722KR15022R23022R2710KAMGNDGNDFMTo CTRL P C BOARDTo CTRL P C BOARDTo CD UNIT2.5T3.5TC50.01!C3810.022C641000PC3640.01C40.01L10 2.2uHC6510PRadioFans.CN 收音机爱 好者资料库HABCDEFG1
23、23452-4MX-J300Control sectionSHEET 3/6SHEET 4/6SHEET 2/6SHEET 2/6C7010.1MDO1MDI2MCK3SDO4SDI5SCK6SHFT7VDD8OSC29OSC110VSS11XI12XO13MMOD14VREF-15KEY116KEY217KEY318KEY419TPA20TPB21LVL22SFTY23VREF+24MRDY25RESET26OPSW27CLSW28LOAD29BCNT30RDATA31PCNT32REM33DETA34DETB35INH36RDCK37MODL38VDAT39PRT40VCK41MPX42V
24、OL+43VOL-44TUCE45FTU46CDLED47TULED48G1349G1250G1151G1052G953G854G755G656G557G458G359G260G161P162P263P364P465P566P667P768P869P970P1071P1172P1273P1374P1475P1576P1677PLED78AXLED79TALED80RESERVE81OPN82CLS83AHB84SMUTE85ECHO86SPK87KOK88CDRST89RECM90PBM91SOLA92SOLB93MOT94AB95BIAS96RPHD97BC198BC299VPP100IC7
25、01MN101C35DYA1011121314151617181920212223242526272829303132333435383998765213R.D.SRANDOMALLPRGMABRECKHzNEWSINFOEONTABASSMONOST21DAILY1 CDRECS. MODEREPEATSLEEPMHzFL701RA701220KRA702220KRA703220KRA704220KRA705220KRA706220KRA707220KRA708220KRA709220KRA710220KRA711220KRA712220KP16P15P14P13P12P11P10P9P8P
26、7P6P5F1P1N.CN.C1G2G3G4G5G6G7GP411G12GNPNPF2F2P2P3NPNPF18GRA713220KRA714220KRA715220KRA716220KRA717220KRA718220KRA719220KRA720220KRA721220KRA722220KRA723220KRA724220KRA725220KRA726220KRA727220KRA728220K9G10GG9TO MAIN PWBQ701KTC3199Q702KTC3199Q703KTC3199R70410KR70610KR702220KR701220KR703220KR70510K11G
27、10GPLEDG109GTO MAIN PWBG11TALED7GAXLED13GTALEDAXLED3G1G2G6G4G5GPLED8GRA729220KR7072.2KR7082.2KR7092.2KR7381KR7102.2KR7112.2KR7121KR7141KR7162.2KR7171KR7192.2KR7201KR7221KR7241KR7261KR7271KR7281KR7291KR7301KR7311KR7334.7KR7344.7KR7371KR7361KR7351KSOLARECMPBMABSOLBMOTBC1BIASRPHDSMUTEBC2AHBKOKECHOSPKOP
28、NX70232.768KHzX7018.0MHzC71122PC71222PC70933PC71033PR7562.2KR7552.2KR7542.2KR7452.2KR7422.2KR7432.2KR7482.2KR7462.2KR7532.2KR740220R7391KR7524.7KR7472.2KR744220KQ7042SC2668Q7052SC2668C7050.001C70739PC7060.001C70833P+C7026.3V220CDRSTCLSSDOSDITO CASSETTE UNITMSTATSCKMCKMCMDTPAMRDYSFTYTPBLVLL70122uHR79
29、02.2KR7891KR7881KR7852.2KR7842.2KR7822.2KR7801KR7781KR7912.2KR7752.2KR7732.2KR7722.2KR7712.2KR7702.2KR7691KR76210KR7582.2KR7662.2KR7652.2KR7602.2KR7571KD7031SS133D7021SS133D7011SS133+C7046.3V220+C7036.3V220R741330L703F.BL70210uH114215345678910111213CN702IN1VCC2OUT3NC4GND5VS6OUT7VR8IN9IC703TA8409SQ71
30、2KTC3199R799150R7953.3KR798390R79618KR7973.3+C72110v100+C7226.3V220L704F.BL70810uH+C72025V10R79410KR79310KM.G8VPRTSPKSMUTEPCNT(ECHO)(KOK)VDATAVCKMPXAHBFTUSFTY6VTUCEINHLVLSDISDODGFL1FL2-35VSCK114215345678910111213CN701MCMDMSTATMRDYMCLKMRESET+C71950V22C7170.1+C71850V22L70710uHR792330114215316456789101
31、11213CN70412CN70312CN703M-+MO701PANEL MOTORSW5VVREF+TPBTPADETBDETABIASBC2BC1MOTSOLASOLBABRPHDRECMPBMR71347KR71547KR71810KR72147KR72347KR72547KR73210KR7514.7KR7504.7KR7494.7KR75910KR76147KR76447KR7741.8KR76347KR77610KGND1VCC2OUT3IC702IR-UNITS1012EJE3S1011EJE2S1010EJE1S1007CD1S1008CD2S1009CD3S1005BAND
32、S1006CDLED14grnLED15grnR10131.5KR10142.2KR10152.7KR1016Note2R1011820R10121KR1010680R1009680R78710K12W100412W10041234W1003123W1002R1018330R1017330S1023RECS1024DUBBINGS1025CD RECS1013STOPS1014TUN -S1015TUN +R1028680R1029680R1030820R1021820R1019680R1020680S1026REV MODES1027PRESET -S1028PRESET +S1016REP
33、EATS1017RANDOMS1018PROGRAMR10311KR10321.5KR10332.2KR10242.2KR10221KR10231.5KS1029DECK A/BS1030DISPLAYS1031A.BASSS1019S.MODES1020CANCELS1021SETR10342.7KR10355.6KR1036Note3R102712KR10252.7KR10265.6KS1022TIM/CLKS1004AUXS1001POWERS1002PANELS1003TAPER1003820R1004Note2R1005Note2R1001680R1002680R78610K123W
34、1002LED11redR1006680LED12grnLED13grnR1008330R100733012345W1001123SW101JOG123W1005C10010.01C10020.01S1002CLOSES1003OPEN12345CN709JW1001Note312345CN70812345CN7051234CN707123CN706Q711DTA114ESQ709DTA114ESQ710DTA114ESQ707DTA114ESQ708DTA114ESC7130.01C7150.001+C7166.3V47C7140.01KEY3KEY1KEY2DETAKEY4PCNTKEY4
35、DETBINHKEY1KEY2SW PWB (1)TUCEKEY3FTUVDATMPXVCKPRTQ7062SA1175R78110KR77910KR78347KR105147KR76710KR76810KCONTROL PWBSW PWB (2)SW PWB (3)SW PWB (4)SW PWB (5)SW PWB (6)D7041SS133+C72350V1UR/UXUJ/CR1016UXAENon8.2KNonNonNon6.8K1.5KNonNonNonNonNote2Non12K18KNonEENonR1005R10048205.6K4.7KJW18KNote3: Display
36、TestAll LED is Flashing.All Segments of FL is turn On.Use only PWB check R1036/JW1001=NonJ/C/E/EE=13PinUx=15PinE/RDSDOMEE/RDS 6.8K18K8208.2K18K18K12K1.5K18KQ715DTC114YSQ714DTC114YSR103722KR103822KDETBDETAR103982KR104082KR104347KR104156KR104256KR104410KR104510KR104610KR104747KR104847KR104910KR105010K
37、Q713DTC114YSABCDEFG123452-5MX-J300TAPE P.B. signalRECORDING signalCassette amplifier sectionSHEET 4/6R5192.2KR36910KQ355DTA114YSQ354DTA114YSQ352KTC3200Q353KTC3200R35610KR35510KC355820PC3560.0012-MR36510KQ363DTC114YSQ365DTC144ESQ364DTC114YSQ362DTC144ESR3794.7KR3712.2KR37547KR37622KR3923.3KM-+HEAD SWH
38、ALF SWREC-REVHEAD SWHIGHREC-FWDHALF-SWHIGH114215345678910111213CH1_A1CH1_B2NF13EQ14PREOUT15MIX_OUT6GND17EQSW8REC_OUT19REC_NF110REC_IN111GND12CH2_A24CH2_B23REC_OUT216NF222CG17EQ221PREOUT220A/B_SW19VCC18REC_NF215REC_IN214ALC13IC402TA8189123CTL4GND5VCC6789RECPBPBRECIC401BA3126NE-HDPB-HDRP-HDC502560PC50
39、1560PC402560PC401560PC50333PC40333PC4040.018-MC506220PC5040.018-MC406220P+C50510V100+C40510V100+C40725V4.7+C50725V4.7R504100R5026.8KR5039.1KR4026.8KR401 100KR4039.1KR501100KR404100+C35150V2.2R35110KR40768KR50768KR4083.3KR509150KR5083.3KR409150KC5120.056-MC4120.056-MC5100.0033C4100.0033+C51125V10+C41
40、125V10Q501DTC114TSQ401DTC114TSR5211.8KC5130.01-MC4130.01-MR4211.8K+C35310V47R3531MR5112.2KR5123.3KR51322KR5144.7KR41322KR4112.2KR4144.7KR4123.3K+C51525V4.7+C41650V0.22+C51650V0.22+C41525V4.7Q5022SD2144SQ4022SD2144SC5141000PC4141000PPB-HDRP-HD+C50825V4.7+C40825V4.7R50515KL40127mHL50127mHR40515KC5090.
41、0033C4090.0033+C35416V47R354220C517470PC417470PR41547KR51547KL351BIAS-COILC3570.015-MQ3562SC2001Q3572SC2001R35818KR35718KR3614.7R35910R36010C3610.0068-MC3630.0056-MC3620.0056-MR362120C3600.01+C35916V100R36356Q361DTC144ESQ360DTC144ES114215345678910111213CN35370uS-A70uS-BF-RECHALF-AGNDHDP-AHALF-BPDET-
42、AR-RECSOL-ASOL-BM+PDET-B+5VHDP-BQ3672SA934Q3682SA934Q366DTC114YSQ369KTC3199Q5032SD2144SD3521SS133D3531SS133D3511SS133R37810KR3873.3KR3881KR3893.3KR391150R3904.7KC3710.01C3730.01+C37016V100+C36925V4.7Q3702SA934Q371KTC3199D3541SS133R394150R3934.7KC3720.01R3722.2KR3732.2KR3742.2KR3802.2KR3812.2KR38356K
43、R3826.8KMOTSOLBSOLABC1TPBVREFTPADETADETB+C35216V100R352100Q4032SD2144SR3704.7KR36410KR36810KR36710KR3664.7KR5166.8KR4166.8KR4182.2KR5182.2KR41722KR51722K+C36510V100REC-LA.GREC-RPB-LA.GPB-R9VM.BM.GBIASSW5VVREFTPBTPADETBDETABIASBC2BC1MOTSOLASOLBRECMRPHD11421531645678910111213CN352123456789CN351C3640.0
44、47BC2ABRPHDRECMPBMR3861KQ4042SD2144SQ5042SD2144S R5202.2KR4192.2KR4202.2K CASS. GNDC90010.001 Q3582SA1175Q3592SA1175C5180.0022C4180.0022R4101.2kR5101.2KR3961KR3991KTO CRTL.PWBTO MAIN PWBC51933PC41933PC520150PC420150P: R419 & R519 ,R420 & R520 ,Q404 & Q504 FOR U VERSION ONLY.( U ONLY)( U ONLY)( U ONL
45、Y)( U ONLY)D3551SS133C90020.001R90011KL9001F.BL9002F.BC90050.01C90060.01C90070.01 FLAME GND( U ONLY)( U ONLY)( E ONLY)( E ONLY)( E ONLY)( E ONLY): C356,R356,Q353,Q355 FOR E VERSION ONLY.C9003180PC9004180P CASS. GND C91020.01SHEET 2/6SHEET 3/6HABCDEFG123452-6MX-J300CD signalDIGITAL SERVO&DIGITAL SIGN
46、ALPROCESSERCD CHANGERCONTROLRF & SERVO AMP.CD Servo & CD Mechanism control section SHEET 5/6SHEET 2/6ABCDEFG123452-7MX-J300MIC signalMic & headphone section (Ver. U/US/UT/UP/UY/UZ)Headphone section (Only Ver. A)SHEET 6/6C8620.01R86015KR8594.7KJ851HTJ-064-07AGJ850YKB21-5101A12345FW852EWR350-30LS123G4
47、567VCC8+-+-IC852BA15218FC865150PC866330PC864150P+C86350V2.2+C86850V4.7+C86910V100+C87010V220R8621KR8634.7KR86447R86527KR8684.7MR8671.5KR869560R872220R87312KQ8512SC2785D8511SS133+C86750V1R866390R87410KR85310KR8528.2KR85122KR85733KR88022KR85682KR861330R85539KR8794.7KR87647KR8704.7KR8714.7K+C85150V4.7+
48、C85816V22C8530.012-M+C87650V1C8590.01-MC8520.0047C873390PC857100PC8560.01C8540.01-MC8710.047C8600.47-MC872390P+C85510V100R878100KC8610.0033+C87416V10R85810KD852MTZ5.1JBR87522K1234FW851FW-4P-L300VR84010K-AR8404.7KR843150R842150L843L844LOUTSWROUTGND+B 9VMICAGECHODGGND1ECHO VR2BIAS3DAINTO4DAINTI5DALPFI
49、6DALPFO7MIXO8MIXI9ADLPFI10ADLPFO11ADINTO12ADINTI13VCC14MUTE15CR16IC851BU9253FSQ8522SC2785C8750.01R8812.2KL8454.7uHQ853DTA114YSR88212KMIC JACKHEAD PHONE JACKTO MAIN PCBSHEET 2/6SHEET 2/6SHEET 2/6L1053F.BJ1053VMJ4026-0011234W1051FW-4P-L300L105247uHL105147uHLOUTSWROUTGNDC10511000PC10521000PHEAD PHONE JACKTO MAIN PCB