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Hitachi DR100E Service Manual

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CAUTION:
Before servicing this chassis, it is important that the service
technician read the "Safety Precautions" and "Product Safety
Notices" in this service manual.
ATTENTION:
Avant d'effectuer l'entretien du châassis, le technicien doit lire
les «Précautions de sécurité» et les «Notices de sécurité du
produit» présentés dans le présent manuel.
VORSICHT:
Vor Öffnen des Gehäuses hat der Service-Ingenieur die
„Sicherheitshinweise" und „Hinweise zur Produktsicherheit" in
diesem Wartungshandbuch zu lesen.
SERVICE MANUAL
MANUEL D'ENTRETIEN
WARTUNGSHANDBUCH
October 1999
SM0093
DR100E
DR100EBS
DR100UC
DR100W
DR100WUN
Data contained within this
Service manual is subject
to
alteration
improvement.
Les données fournies dans
le
présent
d'entretien
peuvent
l'objet de modifications en
vue
de
perfectionner
produit.
Die
in
for
manuel
faire
le
diesem
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Summary of Contents for Hitachi DR100E

  • Page 1 SM0093 DR100E DR100EBS DR100UC DR100W SERVICE MANUAL DR100WUN MANUEL D’ENTRETIEN WARTUNGSHANDBUCH CAUTION: Before servicing this chassis, it is important that the service technician read the “Safety Precautions” and “Product Safety Data contained within this Notices” in this service manual. Service manual is subject...

  • Page 2: Safety Precautions

    The service technician must make sure that no protective device built into the instrument by the manufacturer has become defective, or inadvertently damaged during servicing. CE MARK 1. HITACHI products may contain the CE mark on the rating plate indicating that the product contains parts that...

  • Page 3: Specifications

    Specifications Track system: 4-track 2-channel Recording system: AC Bias Erasing system: AC Bias Tape speed: 4.75 cm/s Included circuits: Dolby B and C NR, Dolby HX Pro Usable tapes:: Normal: 40 - 15,000 Hz CrO2: 40 - 16,000 Hz Metal: 40 - 17,000 Hz Power supply: AC 230 V, 50 Hz (E/EBS), AC 120V 60 Hz (UC), AC 110-127/220-...

  • Page 4: Removal Of Top Cover

    Removal of Top Cover 1. Remove 1 screw from each side. 2. Remove 6 screws from the rear plate. Removal of Rear Plate 1. Remove 3 screws and 1 screw from the rear plate.
  • Page 5 Removal of Power Cord 1. Detach the power cord connector from connector...

  • Page 6: Removal Of Transformer

    Removal of Transformer 1. Remove 2 screws from the transformer. 2. Pull the transformer upwards to detach its connectors from the main P.W.B. board.
  • Page 7 Removal of PB P .W.B. Board 1. Remove 1 screw from the base plate at the side. 2. Gently pull the PB P.W.B. board upwards to detach its 2 connectors from the main P.W.B. board and free the connector...
  • Page 8 Removal of REC P .W.B. Board 1. Release the REC P.W.B. board from its holding claws and then gently pull the board free of the connector...
  • Page 9 Removal of Main P .W.B. Board 1. Remove the remaining connectors (see Removing Power cord), from the main P.W.B. board. 2. Remove 3 screws and 1 screw from the main P.W.B. board.

  • Page 10: Removal Of Front Panel

    Removal of Front Panel 1. Remove 1 screw from each side of the base plate. 2. Invert the base plate and remove the 4 screws 3. Remove the Front Panel after releasing the connector...
  • Page 11 Removal of Deck Mechanism and P .W.B. Holder 1. Remove 4 screws and then remove the deck mechanism. 2. Remove 3 screws and then remove P.W.B. Holder.
  • Page 12 Removal of Foot 1. Remove 4 screws and then remove foot.
  • Page 13 ADJUSTMENTS Adjusting and Checking the Electrical Section Measuring instruments needed for the adjustments 1. Low frequency oscillator 2. Variable resistance attenuator 3. Electronic voltmeter 4. Oscilloscope 5. Frequency counter 6. Adjustment screwdriver 7. Test tapes MTT-111, MTT-114N, MTT-150, Type1 tape (UD-1) 8.

  • Page 14: Azimuth Adjustment

    3. Azimuth Adjustment 1. Connect an electronic voltmeter to the Line Out terminal, and set Test tape MTT- 114N into the Unit. 2. Playback FWD side, and adjust the azimuth screw A so as to get maximum indication on the voltmeter, then make the same adjustment with the screw B for REV side.
  • Page 15 6. Bias Current Adjustment 1. Set Test tape (Type 1 tape: UD-1) into the unit, input 1.25 kHz/12.5 kHz 21mV signal to JK1 LINE IN and record this signal on the tape. 2. Playback the recorded signal, and adjust RT103L (Lch) and RT103R (Rch) so that the level difference between both frequencies becomes within the range of 28mV + 2dB ~ –0.5dB on the voltmeter at JK1 LINE OUT.

  • Page 16: Adjustment Points

    Adjustment Points...

  • Page 17: Wiring Diagram

    Wiring Diagram...
  • Page 26 Block Diagram...
  • Page 27 Exploded View E/EBS/UC W/WUN REC P.W.B. EBS ONLY PB P.W.B. FL P.W.B. E/EBS PT P.W.B. EBS ONLY MAIN P.W.B. AC OUTLET (UC) W/WUN VOLTAGE SELECTOR P.W.B. Voltage Selector (W/WUN)
  • Page 28 Cassette Chassis Nos. are reference Nos. of parts list •...
  • Page 29 Cassette Loader Assembly Nos. are reference Nos. of parts list •...
  • Page 30 IC Data Replacement Parts List Part indicated with the mark “}“ are not always in stock and possibly to take along period of • time for supplying, or in some case supplying of part may be refused. When ordering of part, clearly indicate “1” and “I” (i) to avoid mis-supplying. •...
  • Page 31 • Transistors...
  • Page 32 CXA1561S (IC103) BA6209N (IC305) µ µ µ µ PC1297CA (IC105) DOLBY HX-PRO...
  • Page 33 NJM2068 (IC102)
  • Page 34 THE UPDATED PARTS LIST FOR THIS MODEL IS AVAILABLE ON ESTA...
  • Page 35 Fax: +46 (0) 8 562 711 13 Tel: +39 02 38073415 Servizio Clienti Email: [email protected] Fax: +39 02 48786381/2 Email: [email protected] HITACHI EUROPE S.A.S HITACHI EUROPE LTD (Norway) AB Lyon Office STRANDVEIEN 18 B.P. 45, 69671 BRON CEDEX 1366 Lysaker FRANCE...

This manual is also suitable for:

Dr100ebsDr100ucDr100wDr100wun

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