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Hitachi HT-350 Serviceanleitung
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Hitachi HT-350 Serviceanleitung

Hitachi HT-350 Serviceanleitung

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@HITACHI
SERVICE MANUAL
SPECIFICATION
Ty-F
Ph tter
Motor
Speed
Pitch control range
Speedchangesystem
Wow & flutter
Tone arm
Head shell
Effective length
Tracking error
Adjustable forcerange(Sade)
Acceptablecartridge weight
When aHITACHI c artrilgeisattached.
Cartridge
Frequency
Output voltage
Channel difference
Channel
Tracking force
Stylus tip
Power source
Power consumption
Dimensions
Weight
Other.devices
DIRECT
2-speed directdrivesystem
Aluminum alloy die-cast, 308mm outer diameter
BrushlessDC servodirect drive motor
2 speeds; 3 3-1/3and45rpm
33-lf3rprn:±3%, 4 5rpm:
Electronicchange-over system
60 dB (at 50,60Hz)
0.03% WRMS
Staticbalance type, tubular
Plug-in type(European standard t ype)
220mm
15 mm
20
0—3g/l t urnof thescale r ing (directly r eadable inO. l g steps)
4—9g
Vertical m oving magnet type(VFS-261)
20-20,000
3.5mVat I kHz SO mm/sec.
1 dB at I kHz
20 dB at J kHz
2g (recommended)
0.7 mil diamondstylus(DS-ST26)
120V/60Hzfor U.S.A.standard & CANADAstandard
220V/50Hzfor Europestandard
240V/50Hzfor UnitedKingdomstandard & Australiastandard
4 watts (at 120V)
5watts (at 220V),5 watts (at 240V)
454(W) x 366(D) x
5.5 kg (12.1 lbs.)
auto return, autocut,anti-skating, tracking f orce direct-reading
balance weight, stroboscope
DRIVE
TURNTABLE
June
1 977
HT-350
English
Deutsch
Franqais
Hz
and neon lamp.
No. 119
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Verwandte Anleitungen für Hitachi HT-350

Inhaltszusammenfassung für Hitachi HT-350

  • Seite 1 @HITACHI HT-350 English SERVICE MANUAL Deutsch No. 119 Franqais SPECIFICATION Ty-F 2-speed directdrivesystem Ph tter Aluminum alloy die-cast, 308mm outer diameter Motor BrushlessDC servodirect drive motor Speed 2 speeds; 3 3-1/3and45rpm Pitch control range 33-lf3rprn:±3%, 4 5rpm: Speedchangesystem Electronicchange-over system 60 dB (at 50,60Hz) Wow &...
  • Seite 2 Effektive Linge 220mm 15 mm Tangentialer Spurfehlwinkel Auflagekraft einstellbar 0—3g, Skala mit O,lg Teilung Tonabnehmergewicht 4—9g Wennein Tonabnehmer von HITACHI angebracht ist. Magnettonabnehmermit Vertikalbewegung(VFS-261 ) Tonabnehmer Frequenzgang 20-20.000Hz Ausgangsspannung 3,5mV bei I kHz 50 mm/sec. Unterschied desÜbertragungsrnaßes I dB bei I kHz Über s prechdämpfung...
  • Seite 3 HITACHI HT-350 FEATURES I. Uni-torque motor Employment of the low center of gravity tone arm 2. The initial high performance is maintained over a long Oil damped arm lifter never damagesstylus tip period Structureresistantto howling 3. Convenient automatic mechanism Easily removable dust cover 4.
  • Seite 4 HITACHI HT-350 SERVICE POINTS (I)Attach the cartridge to the headshellwith cartridge I. Detachment of the motor, tone arm Detach the dust cover, platter, fix the tone arm tothe fixing screws. (2)Thepolarities andL,R channel o f the leadwireof the arm-rest, then remove the bottom plate, andusethe headshellareshownin Fig.
  • Seite 5 HITACHI HT-350 is correct. In this case, it is not necessaryto adjust the the platter is placed on. speed Anotherpoint whichyou should noteis that,if Bearing section of the motor Since the bearing section of the motor isfinished the speed is adjustedwith the stylusnot in contactwith...
  • Seite 6 HITACHI HT-350 P.W.B. Teminol P.W.B. PlaqLEtte circut imximé Re Green Ro.ette cirajt inviré diclimenrctim ROGrün %tor fixing ROVert befestiwngsrmner L•eaou de fixatbn de moteur Blue LOBIau LOB leu Tmerm fixingscrew O ROROUge L(9 White Fig. 3 Wire umeruecherdraft LOBIano anmatique Abb.

  • Seite 7: Adjustment

    (3)Turn the balanceweightOsIowIy until the indication line In case of HT-350, overhang of the tone arm is 15 mm. comes to the specified force. The stylus tip will then be Adjust it by moving the cartridge back and forth after adjusted to the desired tracking force.
  • Seite 8 HITACHI HT-350 Adjustment of the auto-return position adjustment, tighten the screw securely. Adjust the count adjustingscrewso that the auto-return 5. Speed adjustment is done within the rangeof the 57mm to 65 mm radius When the pattern of the stroboscope appears to be from the center of the record while playing.
  • Seite 9 HITACHI HT-350 appearsat terminal No. 14, and the lagging phase at the arm lifter (concurrently used for auto-cut lever) to terminal No. 15, connect a synchroscopeand adjustthe DOWN, tighten the screw of the UD adjustinglink size of the waveform of the lagging phaseusing R54 so gradually, and stop it slightly (approx.
  • Seite 10 HITACHI HT-350 TROUBLE SHOOTING Trouble shooting the "uni- torque" motor Checking the servo-circuit o f HT-350 Note: Since theremaybetroublein parts otherthanthose mentioned h ere. C heck therelated-circuit parts. Does rotate Situation Terminals # (POWER supplyP.W.B.) 1) Do the neon lamp light ? are cut or S2 is faulty.
  • Seite 11 When revolution speedcannot be adjusted by using R53, put R53 in the center position, to adjust RS2 and RSI. Fehlersuchanleitung für ' 'Unitorque" -Motor Überprüfender Servo-Schaltung von Modell HT-350 Anmerkung: Da die Störungenauchauf andereals hier aufgeführteTeile zurückgeführtwerden könnten, alle einschlägigen Teile kontrollieren. Fall 1.
  • Seite 12 HITACHI HT-350 5) 1stdie +B Spannungrichtig ?Kathoden-ZD03 ZDOI, ZD03 schadhaft. und ZDOI Anodenspannung prüfen. Nein 6) Wenn der Plattenteller von Hand edreht wird, QOI, O2, Q06, Q07 , Motor schadhaft. ändert die Wechselspannungalle /8 Drehungen ihre Polarität, wenn an den Klemmen 2, 1,7 von ICOI gemessen.
  • Seite 13 Guide de détection de pannes du moteur monocouple Vérification du servocircuit de HT-350. Remarque: Etant donne que despannesrisquent de se produire au niveau de piécesautres que celles qui sont ici mentionnées, vérifier aussiIes pieces de circuit relatifs. Situation Ne tourne pas 1) La lampe au néon s'allume-t-elle ?
  • Seite 14 HITACHI HT-350 Rotation trus anormale (Un temps mort se produit en cours de rotation) Situation I) Le cäblageextérieur est-il en bon état ? 2) Vérifier l'item (6) de la situation 1. 3) Vérifier l'item (7) de la situation 1. Le moteur est défectueux.
  • Seite 15 MotorP.W.B. 6 Cornmm lead wire US pin cord Neon Lamp Neon Lamp Rotary Sw. 45 rpm ifR21 R27_ Rotary 33hrpm Eart h MotorP.W.B. 5...
  • Seite 16 10K-B 4Svn røn Control *hted wiring bo«d 50K-B 10.4 + cog ROI QOI 14.2 R24 820 022p(M) 100K -0.01 -1.7 • 2410'.' -0.9 -0.1 -0.6 + CIO -5.7 Speed detectim -9.8 470* ZV R37 zro z•ocx-B 09 Oly(M) R28 15K R29 15K ROI SK(2W1 R30 33K...
  • Seite 17 HITACHI HT-350 REPLACEMENT PARTS PIECE SYMBOL STOCK SYMBO STOCK DESCRIPTION DESCRIPTION CAPACITORS SRD%P 0114203 Carbon film 12kn SRD%P 01 14287 Carbon film 180kO for CONTROL PRINTED WIRING BOARD Carbon film 180kO SRD%P 01 14287 SRD%P 0114143 Carbon film 3300 SRD%P...

  • Seite 18: Vue Eclatee

    HITACHI HT-350 EXPLODED VIEW •AUSEINANDERGEZOGENE DARSTELLUNG• ECLATEE (Nos. are reference Nos. of parts list) Fig. 11 Fig. 10 Abb. Abb. I (for U.S.A.8 Canada) I (without U. S.A. a Canada) Power supply I Stopper change-over switchl Fig. 12 Abb. 3334 39 40 Fig.
  • Seite 19 HITACHI HT-350 REPLACEMENT PARTS LIST •ERSATZTEILLISTE•TABLEAU PIECE ITEM STOCK ITEM STOCK DESCRIPTION DESCRIPTION 4684321 Platter mat (without U.S.A. & Canada) 4684322 Platter mat (for U.S.A. & Canada) 4567416 x 16CT bind screw (silver) matter 4785044 flanged 4770254 3924662 Cabinet assembly...