Fostex-PH50-pad-sm维修电路原理图.pdf

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1、PH-501PH-50Service ManualModelHeadphone Amp DistributorRadioFans.CN 收音机爱 好者资料库2PH-50SAFETY INSTRUCTIONSRead instructions - All the safety and operating instruc-tions should be read before the appliance is operated.Retain instructions - The safety and operating instructionsshould be retained for futu

2、re reference.Heed warnings - All warnings on the appliance and in theoperating instructions should be adhered to.Follow instructions - All operating and use instructionsshould be followed.Water and Moisture - The appliance should not be usednear water - for example, near a bathtub, washbowl,kitchen

3、sink, laundry tub, in a wet basement, or near aswimming pool, and the like.Carts and Stands - The appliance should be used onlywith a cart or stand that is recommended by the manufac-turer.An appliance and cart combination should be moved withcare. Quick stops, excessive force, and uneven surfacesma

4、y cause the appliance and cart combination to over-turn.Wall or Ceiling Mounting - The appliance should bemounted to a wall or ceiling only as recommended by themanufacturer.Ventilation - The appliance should be situated so that itslocation or position does not interfere with its proper ven-tilation

5、. For example, the appliance should not be situ-ated on a bed, sofa, rug, or similar surface that may blockthe ventilation openings; or, placed in a built-in installa-tion, such as a bookcase or cabinet that may impede theflow of air through the ventilation openings.Heat - The appliance should be si

6、tuated away from heatsources such as radiators, heat registers, stoves, or otherappliances (including amplifiers) that produce heat.Power Sources - The appliance should be connected to apower supply only of the type described in the operatinginstructions or as marked on the appliance.Grounding or Po

7、larization - The precautions that shouldbe taken so that the grounding or polarization means ofan appliance is not defeated.Power Cord Protection - Power supply cords should berouted so that they are not likely to be walked on orpinched by items placed upon or against them, payingparticular attentio

8、n to cords at plugs, convenience recep-tacles, and the point where they exit from the appliance.Cleaning - The appliance should be cleaned only as rec-ommended by the manufacturer.Nonuse Periods - The power cord of the appliance shouldbe unplugged from the outlet when left unused for a longperiod of

9、 time.Object and Liquid Entry - Care should be taken so thatobjects do not fall and liquids are not spilled into the en-closure through openings.Damage requiring Service - The appliance should be ser-viced by qualified service personnel when:A.B.C.D.E.Servicing - The user should not attempt to servi

10、ce the ap-pliance beyond that described in the operating instruc-tions. All other servicing should be referred to qualifiedservice personnel.REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.CAUTIONRISK OF ELECTRIC SHOCKDO NOT OPENCAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,DO NOT REMOVE COVER (OR BA

11、CK).NO USER-SERVICEABLE PARTS INSIDE.TO PREVENT ELECTRIC SHOCK, MATCHWIDE BLADE OF PLUG TO WIDE SLOT,FULLY INSERT.POUR VITER LES CHOCS LECTRIQUES,INTRODUIRE LA LAME LA PLUS LARGE DELA FICHE DANS LA BORNE CORRE-SPONDANTE DE LA PRISE ET POUSSERJUSQU AU FOND.CAUTION:ATTENTION:The exclamation point with

12、in an equilateraltriangle is intended to alert the user to thepresence of important operating and mainte-nance (servicing) instructions in the literatureaccompanying the appliance.The lightening flash with arrowhead symbol,within an equilateral triangle, is intended toalert the user to the presence

13、of uninsulated“dangerous voltage” within the products en-closure that may be of sufficient magnitude toconstitute a risk of electric shock to persons.“WARNING”“TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOIS-TURE.”1.2.3.4.5.6.7.8.The power supply cord or the

14、 plug has been damaged;orObjects have fallen, or liquid has been spilled into theappliance; orThe appliance has been exposed to rain; orThe appliance does not appear to operate normally orexhibits a marked changed in performance; orThe appliance has been dropped, or the enclosuredamaged.9.10.11.12.1

15、3.14.15.16.17.RadioFans.CN 收音机爱 好者资料库PH-503TABLE OF CONTENTS1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2. CONTROLS, INDICATORS AND CONNECTORS . . . . . . . . . . . .3. EXPLODED VIEW, PCB ASSEMBLY AND PARTS LIST . . . . . .4. CIRCUIT & BLOCK DIAGRAM

16、S . . . . . . . . . . . . . . . . . . . . . . . .NOTES*Parts List and circuit diagrams are given in this manual to assist the service technician in maintaining the Model PH-50.*The following accessories are supplied with PH-50 as the standard accessories.Owners manual: 8288384000 (for export model)O

17、wners manual: 8288385000 (for domestic model)*Following is the packing material for the Model PH-50.PACKING SIDE A PH-50 : 8228445000CARTON BOX PH-50: 822872100045610CAUTIONParts marked with this sign are safety critical components. They must always be replaced with identical components.Refer to the

18、 Fostex Parts List and ensure exact replacement.4PH-501. SPECIFICATIONSINPUT SECTIONINPUT (Balanced)ConnectorXLR ( Hot : Pin 2 ) / Stereo phone ( Hot : tip )Input level+4dBu / -10dBV(switchable)Impedance10 k or moreINPUT (Unbalanced)ConnectorRCA pinInput level-10dBVImpedance10 k or moreCHANNEL INPUT

19、ConnectorRCA pinInput level-10dBVImpedance10 k or moreAUX INPUTConnectorRCA pinlevel-10dBVImpedance10 k or moreOUTPUT SECTIONPHONES 1-5ConnectorStereo phoneMax. Output Level500 mW or more ( 32 load, Distortion 3.0 % or less )Load Impedance8 32 Frequency Response30 20 kHz 2dB ( 32 load, 1kHz, 200 mW

20、)S/N-65dBV or less (DIN AUDIO, OUTPUT VR : MIN)-80dBV or less ( IHF-A, OUTPUT VR : MIN)Distortion0.1 % or less ( 32 load, 1kHz, 200 mW )CASCADE OUTConnectorRCA pinOutput level-10dBV 3dB (INPUT VR : CAL )Frequency Response30 20 kHz 1dBS/N-85dBV or less (DIN AUDIO, OUTPUT VR : MIN)-90dBV or less ( IHF

21、-A, OUTPUT VR : MIN)Distortion0.05 % or less ( 1kHz, -10dBV )Click Noise (Power on / off)-20dBVp-p or less (OUTPUT VR : MIN)Shock Noise-40dBVp-p or less (Measure noise level when one side of applianceis dropped 3 times from 5 cm height.)Peak LED Indication+7dBV 3dBGENERALDimensions 210 (W) 200 (D) 4

22、3 (H) mmWeight1.9 kgPower supplyJPN100 VAC, 50/60 HzUSA/CND120 VAC, 60 HzEUR/UK230 VAC, 50/60 HzPower consumption8 W*Specifications and appearance are subject to change without notice for product improvement.PH-5052. CONTROLS, INDICATORS & CONNECTORSPH-50HEADPHONE AMP DISTRIBUTORPEAKCALPHONESAUX INI

23、NPUTMONOSTPOWER5100345215100510051005100510051001234567812345LRLRL/MONORCASCADE OUTINPUTAUX IN(-10dBV)(-10dBV)(-10dBV)CHANNEL IN(-10dBV)+4dBu-10dBVLRRLINPUT(+4dBu/-10dBV)PHONEXLRHOTCOLDGNDT2RS3191011121314159. Channel input jacks CHANNEL IN 1-510. Balanced input connector (XLR) INPUT11. Cascade outp

24、ut jack CASCADE OUT12. Unbalanced input jack INPUT13. AUX input jacks AUX IN14. Balanced input level selector switch -4dBu/-10dBV15. Balanced input connector (Stereo phone) INPUT1. Headphone output level control knob PHONES 1-52. AUX input level control knob AUX IN3. Peak LED PEAK4. Power LED POWER5

25、. Headphone jacks PHONES 1-56. Input image position selector switch ST/MONO7. Input master level control knob INPUT8. Power switch POWER6PH-50BBT 3x6 BZnB 3x6 CZnBBT 3x8 BZnBBT 3x8 BZnBBT 3x6 BZnBBT 3x8 BZnBBT 3x6 BZnBBT 3x6 BZnBBT 3x6 BZnBBT 3x6 BZnRef. No.Part No.Description18221262000CASE, COVER,

26、 PH-5028221264000PANEL, FRONT, PH-5038274174000PCB Assy, MAIN, PH-5048650800000CORD, AC, USA/CND8650801000CORD, AC, EUR8650802000CORD, AC, UK8650803000CORD, AC, JPN58207000208BUSHING, SR-4N-468218775001INSULATION SHEET, PH-5078228775002INSULATION SHEET B, PH-503. EXPLODED VIEW, PCB ASSEMBLY AND PART

27、S LIST PH-50 OVERALL EXPLODED VIEW & PARTS LISTRef. No.Part No.Description88274175000PCB Assy, VR, PH-5098226198003ROTARY, KNOB(C), G108226198001ROTARY, KNOB(A), R118242256003TRANS, POWER, 120V8242256006TRANS, POWER, 230V8242256010TRANS, POWER, 100V128221263000CHASSIS, MAIN, PH-50138253014007SW, WL,

28、 PUSH, POWER, SDDLB-SPST148207000318PLASTY-FOOT, 3725158226228000BUTTON, PUSH, POWERPH-507 PH-50 Parts List MAIN/VR PCBsICsRef. No.Part No.DescriptionU101501 8236035803IC, PC4570HAU102502 8236046000IC, NJM386BDU152552 8236046000IC, NJM386BDU6018236035803IC, PC4570HAU6028236035803IC, PC4570HAU6058236

29、035803IC, PC4570HAU6518236035803IC, PC4570HAU7018236035803IC, PC4570HAU8018236032005IC, REGULATOR, NJM78M12FAU8028236034705IC, REGULATOR, 79M12FATRANSISTORsRef. No.Part No.DescriptionQ6018234108900TR, 2SD1858, QR, TQ6028234108900TR, 2SD1858, QR, TQ6038234108800TR, 2SB1237, PQR, TQ6048234108900TR, 2S

30、D1858, QR, TQ8018234107600TR, 2SC4549, NECDIODEsRef. No.Part No.DescriptionD6018234106500OPT, LED, RT3-222HCSD6028234500700D, HT,1SS136D6038234500700D, HT, 1SS136D7518234500700D, HT, 1SS136D7528234106500OPT, LED, RT3-222HCSD7538234500700D, HT, 1SS136D7548234500700D, HT, 1SS136D8018234108700D, RB151D

31、8028234106500OPT, LED, RT3-222HCSRESISTORsRef. No.Part No.DescriptionR101501 8240284001VR, RK09K120A1NA, 5KA x 2R110510 8230138393HT, CARBON, 1/4W, 39K, 5%R111511 8230138393HT, CARBON, 1/4W, 39K, 5%R112512 8230138104HT, CARBON, 1/4W, 100K, 5%R113513 8230138332HT, CARBON, 1/4W, 3.3K, 5%R114514 823013

32、8332HT, CARBON, 1/4W, 3.3K, 5%R115515 8230138332HT, CARBON, 1/4W, 3.3K, 5%R116516 8230138103HT, CARBON, 1/4W, 10K, 5%R117517 8230138100HT, CARBON, 1/4W, 10, 5%R118518 8230111568H, METAL, 5.6, 5%R119519 8230138332HT, CARBON, 1/4W, 3.3K, 5%R150550 8230138393HT, CARBON, 1/4W, 39K, 5%R151551 8230138393H

33、T, CARBON, 1/4W, 39K, 5%R152552 8230138104HT, CARBON, 1/4W, 100K, 5%R153553 8230138332HT, CARBON, 1/4W, 3.3K, 5%R154554 8230138332HT, CARBON, 1/4W, 3.3K, 5%R155555 8230138332HT, CARBON, 1/4W, 3.3K, 5%R156556 8230138103HT, CARBON, 1/4W, 10K, 5%R157557 8230138100HT, CARBON, 1/4W, 10, 5%R158558 8230111

34、568H, METAL, 5.6, 5%R159559 8230138332HT, CARBON, 1/4W, 3.3K, 5%R601, 6028240284001VR, RK09K120A1NA, 5KA x 2R610, 6508230138104HT, CARBON, 1/4W, 100K, 5%R611, 6518230138103HT,CARBON, 1/4W, 10K, 5%R612, 6528230138103HT, CARBON, 1/4W, 10K, 5%R613, 6538230138103HT, CARBON, 1/4W, 10K, 5%R614, 6548230138

35、103HT, CARBON, 1/4W, 10K, 5%R615, 6558230138104HT, CARBON, 1/4W, 100K, 5%R616, 6568230138104HT, CARBON, 1/4W, 100K, 5%R617, 6578230138103HT, CARBON, 1/4W, 10K, 5%R618, 6588230138103HT, CARBON, 1/4W, 10K, 5%R619, 6598230138822HT, CARBON, 1/4W, 8.2K, 5%R620, 6608230138822HT, CARBON, 1/4W, 8.2K, 5%R621

36、, 6618230138822HT, CARBON, 1/4W, 8.2K, 5%R622, 6628230138822HT, CARBON, 1/4W, 8.2K, 5%R623, 6638230138103HT, CARBON, 1/4W, 10K, 5%R624, 6648230138103HT, CARBON, 1/4W, 10K, 5%R625, 6658230138102HT, CARBON, 1/4W, 1K, 5%R626, 6668230138104HT, CARBON, 1/4W, 100K, 5%R627, 6678230138393HT, CARBON, 1/4W, 3

37、9K, 5%R628, 6688230138393HT, CARBON, 1/4W, 39K, 5%R629, 6698230138332HT, CARBON, 1/4W, 3.3K, 5%R630, 6708230138103HT, CARBON, 1/4W, 10K, 5%R631, 6718230138103HT, CARBON, 1/4W, 10K, 5%R632, 6728230138393HT, CARBON, 1/4W, 39K, 5%R633, 6738230138101HT, CARBON, 1/4W, 100, 5%8PH-50 CAPACITORsALU = Electr

38、olyticCER = Ceramic typePES = Mylar typeRef. No.Part No.DescriptionC101501 8232050100CER, 50V, 10PF, +-.5PF, SLC102502 8232804104CER, 25V, 0.1F, +80-20%, YFC103503 8232901102PES, 50V, 0.001F, 5%, AMZVC104504 8232143337ALU, 16V, 330F, 20%, SME-VBC105505 8232142476ALU, 10V, 47F, 20%, SME-VBC1078232804

39、104CER, 25V, 0.1F, +80-20%, YFC1088232804104CER, 25V, 0.1F, +80-20%, YFC109509 8232901473PES, 50V, 0.047F, 5%, AMZVC151551 8232050100CER, 50V, 10PF, +-.5PF, SLC153553 8232901102PES, 50V, 0.001F, 5%, AMZVC154554 8232143337ALU, 16V, 330F, 20%, SME-VBC155555 8232142476ALU, 10V, 47F, 20%, SME-VBC159559

40、8232901473PES, 50V, 0.047F, 5%, AMZVC3078232804104CER, 25V, 0.1F, +80-20%, YFC3088232804104CER, 25V, 0.1F, +80-20%, YFC601, 651 8232144226ALU, 25V, 22F, 20%, SME-VBC602, 6528232144226ALU, 25V, 22F, 20%, SME-VBC603, 653 8232144226ALU, 25V, 22F, 20%, SME-VBC604, 6548232050101CER, 50V, 100PF, 5%, SLC60

41、5, 6558232050101CER, 50V, 100PF, 5%, SLC606, 6568232804104CER, 25V, 0.1F, +80-20%, YFC607, 6578232144226ALU, 25V, 22F, 20%, SME-VBC608, 6588232050100CER, 50V, 10PF, +-.5PF, SLC610, 6608232144226ALU, 25V, 22F, 20%, SME-VBC611, 6618232050100CER, 50V, 10PF, +-.5PF, SLC612, 6628232804104CER, 25V, 0.1F,

42、+80-20%, YFC614, 6648232144226ALU, 25V, 22F, 20%, SME-VBC615, 6658232050100CER, 50V, 10PF, +-.5PF, SLC617, 6678232144226ALU, 25V, 22F, 20%, SME-VBC6208232153225ALU, 50V, 2.2F, 20%, BP, SME-VBC6218232146225ALU, 50V, 2.2F, 20%, SME-VBC6228232146225ALU, 50V, 2.2F, 20%, SME-VBC701705 8232144226ALU, 25V,

43、 22F, 20%, SME-VBC751753 8232804104CER, 25V, 0.1F, +80-20%, YFC8018232096108ALU, 25V, 1000F, 20%, SME-VBC8028232096338ALU, 25V, 3300F, 20%, SMEC8038232096108ALU, 25V, 1000F, 20%, SME-VBC8048232804104CER, 25V, 0.1F, +80-20%, YFC8058232804104CER, 25V, 0.1F, +80-20%, YFC8068232144226ALU, 25V, 22F, 20%,

44、 SME-VBC8078232144226ALU, 25V, 22F, 20%, SME-VBC8088232901473PES, 50V, 0.047F, 5%, AMZVC8098232901473PES, 50V, 0.047F, 5%, AMZVC8108232096108ALU, 25V, 1000F, 20%, SME-VBMISCELLANEOUSRef. No.Part No.DescriptionCN8038745503003CONN, XH 3P (87003048)J1016018245337000CONN, PHONE JACK, STEREOJ602824526800

45、2CONN, PL, JACK, XLR31, NC3FAH2J6038245311004CONN, RCA, 4P, YKC21-3084J6518245337000CONN, PHONE JACK, STEREOJ6528245268002CONN, PL, JACK, XLR31, NC3FAH2J7018245311006CONN, RCA, 6P, YKC21-3154J7068245311001CONN, RCA, 1P, YKB11-0273S6018253467000SW, SS010-P022MAM-PA9S6028253467000SW, SS010-P022MAM-PA9

46、W6018277473001CORD, SCN-SCN, 8P x 200W6028277473001CORD, SCN-SCN, 8P x 200W6038277473002CORD, SCN-SCN,10P x 2008207012800HEATSINK, PC1115-25PH-509 PH-50 PCB PATTERN DRAWING10PH-504. CIRCUIT & BLOCK DIAGRAMS+B1R11710R1185.6C1070.1u 2 3 1J101HTJ064PHONES OUT 1R1193.3kR1593.3kC10416V/330uC1090.047uG 1-

47、 2+ 3E 4O5B6P7G28U102386BG 1- 2+ 3E 4O5B6P7G28U152386BR11610kC1030.001uC1530.001uC10510v/47uR15610kR1543.3kR1153.3kR1143.3kC10110p+B2-B2R112100kR1133.3kC1020.1u152 4 3U101A4570AR11039kR11139k+B2R75227kR75327kR751220k9 867U605B4570AD7511SS133D7541SS133D7531SS133R754100kR7554.7kR7594.7kD752L-934ID-5VD

48、802L-934ID-5V+B2+B2-B2-B2C7510.1uR7564.7kR757100R7580C7530.1u15 243U605A4570AC60810pC61110pR624 10kC605100pR61810k+B2R6198.2kR6218.2k 213S601ASSSF 2-2-10dBVR62310kR610100kC60125V/22uR61110kR61210k3J603BRCA 6PUNBAL.IN L-10dBV 2 3 1J601HTJ064R61310kR61410kR616100kC60225V/22uR626100k3J604BRCA 4PBAL.IN

49、L+4dBu/-10dBV123J602CANNONAUX IN L-10dBVC61425V/22uR62739kC60325V/22uR615100kC604100pC6060.1uC60725V/22uC61510p-B2-B2+B2R62839kR6293.3kR6208.2kR62239k+4dBuC6620.1uR61710k152 4 3U601A4570A152 4 3U701A4570AC61025V/22u+B2-B2-B2+B2C6560.1uR63110kR63010kR63239k152 4 3U651A4570A152 4 3U602A4570AR6251KR633

50、100C61725V/22uC6120.1uR15039kR15139k21 53467R6025kAAC15110pR212100kC20110p+B2+B2215 3 467R1015kAAR152100kR1533.3k98 6 7U101B4570AG 1- 2+ 3E 4O5B6P7G28U202386BR21610kC2030.001uC15510v/47uC20510v/47uR2153.3kR2143.3kR1553.3k+B1R21710R1585.6R2185.6C1080.1uR15710 2 3 1J201HTJ064PHONES OUT 2R2193.3kC15416