Hitachi HTA-DD3E Service Manual

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CAUTION:
Beforeservicing this chassis, itisimportantthat the servicetechnician read the"Safety
Precautions"and"ProductSafetyNotices"inthisservicemanual.
ATTENTION:
Avantd'effectuerl'entretienduchâassis,letechniciendoitlireles«Précautionsdesécurité»
etles«Noticesdesécuritéduproduit»présentésdansleprésentmanuel.
VORSICHT:
VorÖffnendesGehäuseshatderService-Ingenieurdie„Sicherheitshinweise"und„Hinweise
zurProduktsicherheit"indiesemWartungshandbuchzulesen.
Specifications...............................................................................................................................................3
Service Points..............................................................................................................................................4
Adjustment.....................................................................................................................................................8
Wiring Diagram.............................................................................................................................................9
Printed Wiring Board..............................................................................................................................10
Block Diagram.............................................................................................................................................23
SCHEMATIC DIAGRAM....................................................................................................................................25
Exploded View.............................................................................................................................................43
Replacement Parts List..........................................................................................................................47
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
SERVICE MANUAL
MANUEL D'ENTRETIEN
WARTUNGSHANDBUCH
CONTENTS
AV SURROUND SYSTEM
September 2000
SM0103
HTA-DD3E
HTA-DD3EBS
HTA-DD3W
HTA-DD3WUN
HTA-DD3WAU
Data
contained within
this
manual is subject to alteration for
improvement.
Les données fournies dans le présent
manueld'entretienpeuventfairel'objet
demodificationsenvuedeperfectionner
leproduit.
Die
in
diesem Wartungshandbuch
enthaltenenSpezifikationenkönnensich
zwecksVerbesserungenändern.
Service

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  Summary of Contents for Hitachi HTA-DD3E

  • Page 1 SM0103 HTA-DD3E HTA-DD3EBS HTA-DD3W HTA-DD3WUN HTA-DD3WAU SERVICE MANUAL MANUEL D'ENTRETIEN WARTUNGSHANDBUCH CAUTION: Beforeservicing this chassis, itisimportantthat the servicetechnician read the“Safety Precautions”and“ProductSafetyNotices”inthisservicemanual. Data contained within this Service manual is subject to alteration for improvement. ATTENTION: Les données fournies dans le présent manueld’entretienpeuventfairel’objet...
  • Page 2: Safety Precautions

    ALL PRODUCTS CE MARK Before any service is performed on the chassis an 1. HITACHI products may contain the CE mark on isolation transformer should be inserted between the the rating plate indicating that the product power line and the product.
  • Page 3 The following precautions should be observed when servicing. 1. Since many parts in the unit have special safety-related characteristics, always use genuine Hitachi’s replace- ment parts. Especially critical parts in the power circuit block should not be replaced with other makers. Critical parts are marked with in the circuit diagram and printed wiring board.
  • Page 4: Specifications

    HTA-DD3 SPECIFICATIONS • AUDIO SECTION (Power amplifier) For (E, EBS) For (W, WUN, WAU) 80 W + 80 W (6 Ω/ohms, 20 Hz ~ 20 kHz with 0.1 % T.H.D.) 100 W + 100 W (EIAJ, 6 ohms) Front: Rated output: (6 Ω/ohms, 20 Hz ~ 20 kHz with 0.1 % T.H.D.) 100 W (EIAJ, 6 ohms) Centre: 80 W...
  • Page 5: Table Of Contents

    HTA-DD3 SERVICE POINTS 1. Removal of Top Cover (a) Remove 2 screws 1 from each side. (b) Remove 4 screws 2 from the rear plate. Top cover Fig.1 2. Removal of Rear Plate (a) Remove 28 screws 3 and 1 screw 4 from the rear plate. (b) Remove 5 screws - from the Bottom Chassis.
  • Page 6 HTA-DD3 3. Removal of Tuner & DSP PWB board (a) Remove the Push Rivet from the Holder (Front) & Holder (Back) then remove the flat cable Z at the Tuner PWB. (b) Remove 1 screw + to detech the shield plate from the bottom chassis. (c) Gently pull the Tuner &...
  • Page 7: Table Of Contents

    HTA-DD3 5. Removal of Front Panel (a) Invert the Bottom Chassis and remove 4 screws !. (b) Remove the Master Vol. & Bass/Treble knob before remove the Front panel. 11 x 1 10 x 4 Bottom Chassis Front Panel Bass/Treble Knob Master Vol.
  • Page 8 HTA-DD3 7. Removal of Foot (a) Remove 4 screws ( to remove foot. 16 x 4 Fig.7 – 7 –...
  • Page 9 HTA-DD3 A D J U S T M E N T S 1) FM Discriminator Measuring instrument and condition. Input terminal Output terminal Measuring instrument Frequency Adjust Reading FM antenna * R22 DC balance meter 98.1 MHz 0±30mV 1kHz, 60dBu, 22.5kHz dev.
  • Page 10: Wiring Diagram

    HTA-DD3 WIRING DIAGRAM – 9 –...
  • Page 11: Printed Wiring Board

    HTA-DD3 PRINTED WIRING BOARD Soldering Side MAIN PWB - 10 -...
  • Page 12 HTA-DD3 Component Side MAIN PWB - 11 -...
  • Page 13 HTA-DD3 Soldering Side Tuner PWB - 12 -...
  • Page 14 HTA-DD3 Component Side Tuner PWB - 13 -...
  • Page 15 HTA-DD3 Component Side Soldering Side Audio PWB - 14 -...
  • Page 16 HTA-DD3 Component Side Soldering Side Relay PWB - 15 -...
  • Page 17 HTA-DD3 Component Side Power PWB Digital PWB - 16 - FL PWB...
  • Page 18 HTA-DD3 Soldering Side Power Digital PWB FL PWB...
  • Page 19 HTA-DD3 Soldering Side Component Side Component PWB...
  • Page 20 HTA-DD3 Soldering Side Component Side...
  • Page 21 HTA-DD3 Soldering Side S-Video PWB Composit PWB PT2 PWB...
  • Page 22 HTA-DD3 Component Side S-Video PWB Composit PWB PT2 PWB...
  • Page 23 HTA-DD3 Soldering Side Component Side Phone PWB Phone PWB PT1 PWB PT1 PWB P-SW PWB P-SW PWB...
  • Page 24: Block Diagram

    HTA-DD3 B L O C K D I A G R A M – 23 –...
  • Page 25 HTA-DD3 – 24 –...
  • Page 32: Exploded View

    HTA-DD3 EXPLODED VIEW (Cabinet Chassis) S-VIDEO P.W.B. COMPONENT P.W.B. • Nos. are reference Nos. of part list RELAY P.W.B. OUTLET P.W.B. SHIELD PLATE (E/EBS) (W/WUN) P-SW1 P.W.B. VOLTAGE SELECTOR (W/WUN) FL DISP PWB AM LOOP ANTENNA 8T Remote Control EDISON PLUG ADAPTER FM ANT —...
  • Page 33 HTA-DD3 — 45 — — 46 —...
  • Page 34: Replacement Parts List

    HTA-DD3 REPLACEMENT PARTS LIST PRODUCT SAFETY NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, please read carefully the Service Manual. Capacitors ..... CK45: Disk Capacitor, CK73: Chip Capacitor (E-12 series), CK14:Axial Capacitor, ABBREVIATIONS CE:Electrolytic, CQ:Polyester Film Capacitor, CC73:Chip Capacitor (E-24 series) Resistors ....
  • Page 35 HTA-DD3 PRODUCT SAFETY NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, please read carefully the Service Manual. S Y M B O L S Y M B O L PART NO. DESCRIPTION PART NO.
  • Page 36 HTA-DD3 PRODUCT SAFETY NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, please read carefully the Service Manual. S Y M B O L S Y M B O L PART NO. DESCRIPTION PART NO.
  • Page 37 HTA-DD3 PRODUCT SAFETY NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, please read carefully the Service Manual. S Y M B O L S Y M B O L PART NO. DESCRIPTION PART NO.
  • Page 38 HTA-DD3 PRODUCT SAFETY NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, please read carefully the Service Manual. S Y M B O L S Y M B O L PART NO. DESCRIPTION PART NO.
  • Page 39 HTA-DD3 PRODUCT SAFETY NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, please read carefully the Service Manual. S Y M B O L S Y M B O L PART NO. DESCRIPTION PART NO.
  • Page 40 HTA-DD3 PRODUCT SAFETY NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, please read carefully the Service Manual. S Y M B O L S Y M B O L PART NO. DESCRIPTION PART NO.
  • Page 41 HTA-DD3 PRODUCT SAFETY NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, please read carefully the Service Manual. S Y M B O L S Y M B O L PART NO. DESCRIPTION PART NO.
  • Page 42 HTA-DD3 PRODUCT SAFETY NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, please read carefully the Service Manual. S Y M B O L S Y M B O L PART NO. DESCRIPTION PART NO.
  • Page 43 HTA-DD3 PRODUCT SAFETY NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, please read carefully the Service Manual. S Y M B O L S Y M B O L PART NO. DESCRIPTION PART NO.
  • Page 44 HTA-DD3 PRODUCT SAFETY NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, please read carefully the Service Manual. S Y M B O L S Y M B O L PART NO. DESCRIPTION PART NO.
  • Page 45 HTA-DD3 PRODUCT SAFETY NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, please read carefully the Service Manual. S Y M B O L S Y M B O L PART NO. DESCRIPTION PART NO.
  • Page 46 HTA-DD3 PRODUCT SAFETY NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, please read carefully the Service Manual. S Y M B O L S Y M B O L PART NO. DESCRIPTION PART NO.
  • Page 47 HTA-DD3 PRODUCT SAFETY NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, please read carefully the Service Manual. S Y M B O L S Y M B O L PART NO. DESCRIPTION PART NO.
  • Page 48 HTA-DD3 PRODUCT SAFETY NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, please read carefully the Service Manual. S Y M B O L S Y M B O L PART NO. DESCRIPTION PART NO.
  • Page 49 HTA-DD3 PRODUCT SAFETY NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, please read carefully the Service Manual. S Y M B O L S Y M B O L PART NO. DESCRIPTION PART NO.
  • Page 50 HTA-DD3 M E M O – 63 –...
  • Page 51 HTA-DD3 M E M O – 64 –...
  • Page 52 HTA-DD3 – 65 –...
  • Page 53 Hitachi, Ltd. Tokyo, Japan International Sales Division THE HITACHI ATAGO BUILDING, No. 15 –12 Nishi Shinbashi, 2 – Chome, Minato – Ku, Tokyo 105-8430, Japan. Tel: 03 35022111 HITACHI EUROPE LTD. HITACHI EUROPE S.A. Dukes Meadow 364, Kifissias Ave. & 1, Delfon Str.

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